Benchmark file generated by bmgpx bmgpx by Ron Parker bmgpx@parkrrrr.com HT1693 100 SM CO http://www.geocaching.com/mark/details.asp?PID=HT1693 100 SM CO Geocache Geocache 100 SM CO CA-081 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>100 SM CO</h1> <b> PID </b> HT1693 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 28 26. (N) 122 13 20. (W) SCALED <br> <b> NAVD 88 </b> 7.63 (+/-2cm) 25.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.51 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 609,480. </td><td> 1,847,680. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.797 (m) 22.30 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG687477(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: S M CO B M 100 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA-081</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 AT REDWOOD CITY. AT REDWOOD CITY, 0.2 MILE SOUTHEAST OF THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION, THENCE 0.3 MILE SOUTH ALONG MAIN STREET, THENCE 0.2 MILE SOUTH ALONG WOODSIDE ROAD, AT THE ENTRANCE TO UNION CEMETERY, 32 FEET WEST OF THE CENTER LINE OF THE ROAD, 20 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE ENTRANCE ROAD, 10 1/2 FEET NORTHWEST OF POWER LINE POLE 7071, 3.4 FEET SOUTHEAST OF THE SOUTHEAST END OF A WHITE PICKET FENCE, 2 FEET EAST OF A HEDGE ROW, AN IRON BOLT AND A COPPER WASHER IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 MARK NOT FOUND. HT0284 12 PPC http://www.geocaching.com/mark/details.asp?PID=HT0284 12 PPC Geocache Geocache 12 PPC PPCC Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>12 PPC</h1> <b> PID </b> HT0284 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 59. (N) 122 12 13. (W) SCALED <br> <b> NAVD 88 </b> 1.08 (+/-2cm) 3.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 614,170. </td><td> 1,849,410. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 0.258 (m) 0.85 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG703524(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE FLOOR <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>PPCC</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2.8 MI N FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VETERANS BOULEVARD, THENCE 1.9 MILES NORTH ALONG HARBOR BOULEVARD, AT THE IDEAL CEMENT COMPANY PLANT, ABOUT 0.1 MILE NORTH AND 0.05 MILE WEST OF BENCH MARK TIDAL 3, NEAR THE MILLING OFFICE, IN TOP OF THE CONCRETE FLOOR INSIDE THE MILLING BUILDING, 1.1 FEET NORTH OF THE NORTHWEST CORNER OF NO. 2 PIER (BUILDING SUPPORT), 0.1 FOOT EAST OF AN ELEVATED PORTION OF THE FLOOR, HT0498 16 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0498 16 CAHD Geocache Geocache 16 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>16 CAHD</h1> <b> PID </b> HT0498 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 31 47. (N) 122 21 46. (W) SCALED <br> <b> NAVD 88 </b> 90.08 (+/-2cm) 295.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 615,920. </td><td> 1,835,370. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 89.218 (m) 292.71 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG563538(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: PIER <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 4 MI SW FROM SAN MATEO. ABOUT 0.7 MILE SOUTHWEST ALONG THIRD AVENUE FROM THE SOUTHERN PACIFIC STATION AT SAN MATEO, THENCE 3.2 MILES SOUTHWEST ALONG CRYSTAL SPRINGS ROAD, THENCE 0.1 MILE SOUTH ALONG SKYLINE BOULEVARD, NEAR THE NORTH END OF BRIDGE 35-05 OVER CRYSTAL SPRINGS DAM, ABOUT 65 FEET WEST OF BENCH MARK P 386, IN THE TOP OF A 2 X 6-INCH TIDE STAFF ATTACHED TO THE SIDE OF A 12 X 12-INCH CONCRETE PIER, 55 FEET NORTHWEST OF THE GATE TO THE FIRST GATE HOUSE WEST OF THE DAM AND ABOUT 8 FEET LOWER THAN THE ROAD. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT1308 208 CADH http://www.geocaching.com/mark/details.asp?PID=HT1308 208 CADH Geocache Geocache 208 CADH CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>208 CADH</h1> <b> PID </b> HT1308 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 29 20. (N) 122 12 58. (W) SCALED <br> <b> NAVD 88 </b> 2.40 (+/-2cm) 7.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.51 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 611,140. </td><td> 1,848,250. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.578 (m) 5.18 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG692493(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE MANHOLE BOX <br>STAMPING: BM 208 1953 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1953 </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 0.8 MI NE FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.5 MILE EAST ALONG VETERANS BOULEVARD, AT THE JUNCTION OF CHESTNUT STREET, IN THE TOP OF THE NORTHEAST CORNER OF A 7- BY 12-FOOT CONCRETE MANHOLE BOX WHICH PROJECTS ABOUT 1 FOOT, 28 FEET SOUTH OF THE SOUTH EDGE OF THE BOULEVARD, 89.0 FEET EAST OF THE EAST CURB OF THE STREET, 6.7 FEET SOUTH OF A CYCLONE FENCE, AND ABOUT LEVEL WITH THE BOULEVARD. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.5 MILE EAST ALONG VETERANS BOULEVARD, AT THE SOUTHEAST CORNER OF THE JUNCTION OF VETERANS BOULEVARD AND CHESTNUT STREET SOUTH, IN TOP OF THE NORTHEAST CORNER OF A 7-BY-12 FOOT CONCRETE MANHOLE BOX PROJECTING 1 FT ABOVE THE GROUND, 89 FT EAST OF THE EAST CURB LINE OF THE STREET, 28 FT SOUTH OF SOUTH CURB LINE OF THE BOULEVARD, 6.7 FT NORTH OF A FENCE LINE. HT1299 211 CAHD http://www.geocaching.com/mark/details.asp?PID=HT1299 211 CAHD Geocache Geocache 211 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>211 CAHD</h1> <b> PID </b> HT1299 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 29 14. (N) 122 11 57. (W) SCALED <br> <b> NAVD 88 </b> 2.35 (+/-2cm) 7.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 610,930. </td><td> 1,849,740. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.521 (m) 4.99 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG707492(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: BM 211 1953 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1953 </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1.8 MI NE FROM REDWOOD CITY. 0.3 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 1.5 MILES EAST ALONG BAYSHORE HIGHWAY (U.S. HIGHWAY 101), AT THE EAST CITY LIMITS OF REDWOOD CITY, AT A 2- BY 4-FOOT CONCRETE BOX CULVERT, IN THE TOP OF THE EAST END OF THE NORTH CONCRETE HEAD WALL, 62 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1 FOOT LOWER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 MARK NOT FOUND. HT1350 219 L SFWD http://www.geocaching.com/mark/details.asp?PID=HT1350 219 L SFWD Geocache Geocache 219 L SFWD CA3290 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>219 L SFWD</h1> <b> PID </b> HT1350 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 25 07. (N) 122 11 28. (W) SCALED <br> <b> NAVD 88 </b> 52.70 (+/-2cm) 172.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 603,300. </td><td> 1,850,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 51.852 (m) 170.12 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG715416(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 219 L <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA3290</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 1.9 MI SW FROM STANFORD UNIVERSITY. 0.6 MILE WEST ALONG SANTA TERESA STREET FROM THE POST OFFICE AT STANFORD UNIVERSITY, THENCE 0.4 MILE SOUTH ALONG LOS ARBOLES AVENUE, THENCE 0.5 MILE WEST ALONG JUNIPERO SERRA BOULEVARD, THENCE 0.4 MILE SOUTH ALONG ALPINE ROAD, AT THE SOUTH END OF A CURVE, AT THE SOUTH END OF A DEEP CUT, ON THE EAST SLOPE OF A HILL, 59 1/2 FEET NORTH OF POWER LINE POLE 12 WITH THREE GUY WIRES, 32 FEET WEST OF THE CENTER LINE OF THE ROAD, 8 FEET SOUTHWEST OF AN 18-INCH OAK TREE, 1.6 FEET EAST OF A 6- BY 6-INCH WHITE WOODEN POST, 0.5 FOOT EAST OF A FENCE, ABOUT 4 FEET HIGHER THAN THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1988 (PS) RECOVERED IN GOOD CONDITION. HT1349 219 R SFWD http://www.geocaching.com/mark/details.asp?PID=HT1349 219 R SFWD Geocache Geocache 219 R SFWD CA3290 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>219 R SFWD</h1> <b> PID </b> HT1349 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 25 07. (N) 122 11 28. (W) SCALED <br> <b> NAVD 88 </b> 52.13 (+/-2cm) 171.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 603,300. </td><td> 1,850,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 51.286 (m) 168.26 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG715416(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 219 R <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA3290</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 1.9 MI SW FROM STANFORD UNIVERSITY. 0.6 MILE WEST ALONG SANTA TERESA STREET FROM THE POST OFFICE AT STANFORD UNIVERSITY, THENCE 0.4 MILE SOUTH ALONG LOS ARBOLES AVENUE, THENCE 0.5 MILE WEST ALONG JUNIPERO SERRA BOULEVARD, THENCE 0.4 MILE SOUTH ALONG ALPINE ROAD, AT THE SOUTH END OF A CURVE, AT THE SOUTH END OF A DEEP CUT, ON THE EAST SLOPE OF A HILL, 74.5 FEET WEST OF AND ACROSS THE ROAD FROM POWER LINE POLE 11, 52.2 FEET SOUTH OF A FENCE CORNER, 27.8 FEET WEST OF THE CENTER LINE OF THE ROAD, 2.4 FEET SOUTHEAST OF A 6- BY 6-INCH WHITE WOODEN POST, 0.7 FOOT EAST OF A FENCE, ABOUT 4 FEET HIGHER THAN THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT3705 3 http://www.geocaching.com/mark/details.asp?PID=HT3705 3 Geocache Geocache 3 NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3</h1> <b> PID </b> HT3705 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 38 07.62881(N) 122 22 53.41056(W) ADJUSTED <br> <b> NAVD 88 </b> 2.6 (meters) 9. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 0.85 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.58 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 627,682.539 1</td><td>833,950.876</td><td> MT </td><td>0.99993121</td><td> -1 ' 09 06.9"</td></tr><tr><td>SPC CA 3 </td><td>2,059,321.80 6</td><td>016,887.17 </td><td> sFT </td><td>0.99993121</td><td> -1 ' 09 06.9"</td></tr><tr><td>UTM 10 </td><td>4,165,548.826 </td><td>554,570.368</td><td> MT </td><td>0.99963668</td><td> +0 ' 22 39.7"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000470 x 0.99993121 = 0.99993591 <br> <b>UTM 10 </b> 1.00000470 x 0.99963668 = 0.99964138 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 38 07.62182(N) 122 22 53.40825(W) AD(1984.00) 3 <br> NGVD 29 (03/23/93) 1.8 (m) 6. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5457065549(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1982 </td><td>GOOD </td><td>NOS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1981 (DRT) THE STATION IS NEAR SAN FRANCISCO INTERNATIONAL AIRPORT. <p>THE STATION IS A SMALL BRASS DISK, STAMPED---3---, THE TOP OF A CONCRETE FOUNDATION BLOCK ON A SPIT OF LAND ALONG THE NORTH PERIMITER OF SEAPLANE HARBOR. THIS SPIT OF LAND EXTENDS GENERALLY EASTERLY FROM THE AIRPORT PROPERTY AND WAS ONCE THE FOUNDATION FOR A LARGE SEWAGE OUTFALL PIPELINE. THE PIPE HAS BEEN REMOVED BUT THE MASSIVE CONCRETE FOUNDATION BLOCKS REMAIN INTACT AND IN GOOD CONDITION. THE STATION IS LOCATED ON THE 13TH FOUNDATION BLOCK AS COUNTED FROM SOUTH WESTERN LIMIT OF THE SERIES OF BLOCKS, AT THE TRANSITION POINT - SOLID CONCRETE FOUNDATION TO INDIVIDUAL BLOCKS. THE DISK IS GREENISH IN COLOR DUE TO THE CORROSIVE SALT AIR. IT IS LOCATED ON THE NORTHERN MOST CORNER OF THE CONCRETE BLOCK ON THE TOP SURFACE 0.8 FEET ABOVE GROUND LEVEL <p>THE WITNESS MARKS ARE CHISELED CROSSES ON EACH OF THE ADJACENT CONCRETE BLOCKS AND ONE ON THE SAME BLOCK AT EASTERN MOST CORNER. WITNESS MARK 1 IS 11.93 FEET SOUTHWEST OF THE STATION. WITNESS MARK 2 IS 8.42 FEET NORTHEAST OF THE STATION. WITNESS MARK 3 IS 7.42 FEET SOUTHEAST OF THE STATION. <p>TO REACH THE STATION FROM THE SAN FRANCISCO INTERNATIONAL AIRPORT CONTROL TOWER, PROCEED NORTHWARD ON THE SOUTH AIRPORT BLVD. AND THEN TURN EASTWARD ONTO THE ACCESS ROAD TO THE FLYING TIGERS HANGER. ABOUT 1/2 MILE DOWN ACCESS ROAD TURN LEFT ONTO THE DIRT SHORELINE ROAD AND FOLLOW TO THE SOUTH END, THE STATION IS AS DESCRIBED NEAR THE SOUTH END OF THE DIRT SHORE ROAD. <p>DESCRIBED B.H. LUND <p> <h2>STATION RECOVERY (1982) </h2> <p>RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1982 (PRC) THE STATION WAS RECOVERED AS DESCRIBED. HT0540 34 http://www.geocaching.com/mark/details.asp?PID=HT0540 34 Geocache Geocache 34 DOD USE Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>34</h1> <b> PID </b> HT0540 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 37 16. (N) 122 22 39. (W) SCALED <br> <b> NAVD 88 </b> 2.07 (+/-2cm) 6.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>This mark is at San Francisco Intl Airport (SFO) <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 626,080. </td><td> 1,834,270. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.242 (m) 4.07 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG549639(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 45 = UNSPECIFIED DEEP UNSLEEVED SETTING (10 FT.+) <br>SP_SET: 60 FT IRON PIPE <br>MARK LOGO: USE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>DOD</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1977 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN FRANCISCO AIRPORT. AT THE SAN FRANCISCO INTERNATIONAL AIRPORT, 0.3 MILE NORTHEAST ACROSS COUNTRY FROM THE NEW TERMINAL BUILDING, AT THE CROSSING OF TAXIWAY NO. 3, BETWEEN RUNWAYS 10L AND 10R, 285 FEET NORTHEAST OF THE NORTHEAST EDGE OF RUNWAY 10R, 213 FEET SOUTHWEST OF THE SOUTHWEST EDGE OF RUNWAY 10L, 91 FEET NORTHWEST OF THE NORTHWEST EDGE OF THE TAXIWAY, 5.5 FEET SOUTHWEST OF A BLACK AND YELLOW STRIPPED 4- BY 4-INCH POST, ABOUT 1 FOOT LOWER THAN THE RUNWAY, AND ABOUT 1 FOOT UNDERGROUND. NOTE-- THE TOP OF A 1-INCH IRON PIPE DROVE 60-FEET INTO THE GROUND, ACCESS TO WHICH IS HAD THROUGH AN 8-INCH CLAY PIPE WITH A 10-INCH CONCRETE LID. <p> <h2>STATION RECOVERY (1977) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 AT THE SAN FRANCISCO INTL AIRPORT, 0.3 MILE NORTHEAST ACROSS COUNTRY FROM THE NEW TERMINAL BUILDING, AT THE CROSSING OF TAXIWAY NO. E, BETWEEN RUNWAYS 10L AND 10R, 285 FEET NORTHEAST OF THE NORTHEAST EDGE OF RUNWAY 10R, 213 FEET SOUTHWEST OF THE SOUTHWEST EDGE OF RUNWAY 10L, 91 FEET NORTHWEST OF THE NORTHWEST EDGE OF THE TAXIWAY NO.E, ABOUT 1 FOOT LOWER THAN THE RUNWAY, AND ABOUT 1 FOOT UNDERGROUND, SOUTH OF TAXIWAY NO. T. NOTE-- THE TOP OF A 1 INCH IRON PIPE DROVE 60 FEET INTO THE GROUND, ACCESS TO WHICH IS HAD THROUGH AN 8 INCH CLAY PIPE WITH A 10 INCH CONCRETE LID. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION. NEW DESCRIPTION FOLLOWS. IN SAN FRANCISCO INTERNATIONAL AIRPORT, ABOUT 1.0 KM (0.6 MI) NORTHEAST OF THE MAIN TERMINAL PARKING GARAGE, 28.1 METERS (92.2 FT) NORTHWEST OF THE NORTHWEST PAINTED EDGE OF TAXIWAY E, 34.5 METERS (113 FT) NORTH OF THE WEST OF A 28L-10R RUNWAY SIGN, 25.1 METERS (82.3 FT) WEST-SOUTHWEST OF THE SOUTHERNMOST 1 OF 5 BLUE TAXI LIGHTS, BETWEEN 2 WITNESS POSTS. NOTE--THE MARK IS THE TOP OF A 1-INCH IRON PIPE SET 60 FT DEEP AND FLUSH WITH THE GROUND. THE MARK IS 0.3 METERS S FROM A WITNESS POST HT0541 35 http://www.geocaching.com/mark/details.asp?PID=HT0541 35 Geocache Geocache 35 DOD USE Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>35</h1> <b> PID </b> HT0541 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 37 09. (N) 122 22 23. (W) SCALED <br> <b> NAVD 88 </b> 2.62 (+/-2cm) 8.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>This mark is at San Francisco Intl Airport (SFO) <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 625,860. </td><td> 1,834,660. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.787 (m) 5.86 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG553637(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 45 = UNSPECIFIED DEEP UNSLEEVED SETTING (10 FT.+) <br>SP_SET: 60 FT IRON PIPE <br>MARK LOGO: USE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1956 </td><td>MONUMENTED </td><td>DOD</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1977 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY US DEPARTMENT OF DEFENSE 1956 AT SAN FRANCISCO AIRPORT. AT THE SAN FRANCISCO INTERNATIONAL AIRPORT, ABOUT 0.5 MILE NORTHEAST OF THE NEW TERMINAL BUILDING, AT THE CROSSING AND ON THE WEST EDGE OF RUNWAY 19-L 1-R, BETWEEN RUNWAYS 28 R 10 L AND 28 L 10 R, 294 FEET NORTH OF THE NORTH EDGE OF RUNWAY 28 L 10 R, 250 FEET EAST OF THE T.V.O.R BUILDING (C.A.A.), 219 FEET SOUTH OF THE SOUTH EDGE OF RUNWAY 28 R 10 L, 24.1 FEET NORTHEAST OF RUNWAY LIGHT NO. D 57, AND ABOUT 1 1/2 FEET LOWER THAN THE RUNWAY. NOTE-- THE TOP OF A 1-INCH IRON PIPE DROVE 60-FEET INTO THE GROUND, ACCESS TO WHICH IS HAD THROUGH AN 8-INCH CLAY PIPE WITH A CONCRETE LID. <p> <h2>STATION RECOVERY (1972) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1977) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION EXCEPT THAT THE MARK IS THE TOP OF THE 1-INCH IRON PIPE. HT1375 388 USGS http://www.geocaching.com/mark/details.asp?PID=HT1375 388 USGS Geocache Geocache 388 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>388 USGS</h1> <b> PID </b> HT1375 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 23 46. (N) 122 14 47. (W) SCALED <br> <b> NAVD 88 </b> 119.11 (+/-2cm) 390.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.45 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 600,890. </td><td> 1,845,380. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 118.241 (m) 387.93 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG667390(NAD 83) <br>MARKER: P = PIPE CAP <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: 388 SF <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 1.3 MI NW FROM PORTOLA. 1.3 MILES NORTHWEST ALONG PORTOLA ROAD FROM THE PORTOLA SCHOOL, AT THE T JUNCTION OF OLD LA HONDA ROAD, IN THE NORTHEAST CORNER OF THE DR. F.F. PRAGUE RESIDENCE YARD, 90 FEET WEST OF THE CENTER LINE OF PORTOLA ROAD, 2.0 FEET SOUTHWEST OF THE SOUTHWEST SIDE OF A 48-INCH ELM TREE, ABOUT 1 FOOT HIGHER THAN OLD LA HONDA ROAD, 0.5 FOOT UNDERGROUND, AND RIVETED ON TOP OF A 3 1/2-INCH IRON PIPE. NOTE-- A LARGE ROOT OF THE TREE IS GROWING OVER THE MARK AND IT WAS NECESSARY TO CHOP THE NORTHWEST SIDE OF THE ROOT TO RECOVERY THE MARK. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT0544 42 C OF SF http://www.geocaching.com/mark/details.asp?PID=HT0544 42 C OF SF Geocache Geocache 42 C OF SF CA3290 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>42 C OF SF</h1> <b> PID </b> HT0544 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 37 32. (N) 122 22 34. (W) SCALED <br> <b> NAVD 88 </b> 3.63 (+/-2cm) 11.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>This mark is at San Francisco Intl Airport (SFO) <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 626,580. </td><td> 1,834,410. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.807 (m) 9.21 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG550644(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: STEEL LEG CONCRETE FOUNDATION <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA3290</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN FRANCISCO AIRPORT. AT THE SAN FRANCISCO INTERNATIONAL AIRPORT, AT THE RADAR TOWER, ON THE TOP OF THE EAST CORNER OF THE NORTHEAST CONCRETE FOUNDATION OF THE NORTHEAST STEEL LEG, 17.7 FEET EAST OF BENCH MARK K 553 1956, ABOUT 1 1/2 FEET HIGHER THAN THE GROUND, AND MARKED WITH WHITE PAINTED LETTERS AND NUMBERS B M 42. HT0295 4.29 RC http://www.geocaching.com/mark/details.asp?PID=HT0295 4.29 RC Geocache Geocache 4.29 RC CA2980 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>4.29 RC</h1> <b> PID </b> HT0295 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 05. (N) 122 12 40. (W) SCALED <br> <b> NAVD 88 </b> 2.77 (+/-2cm) 9.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 612,520. </td><td> 1,848,720. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.944 (m) 6.38 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG697507(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TRANSMISSION TWR CONC FOUNDATI <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - November 20, 2004 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA2980</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20041120</td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2 MI N FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VETERANS BOULEVARD, THENCE 1.0 MILE NORTH ALONG HARBOR BOULEVARD, 170 FEET SOUTH OF THE CENTER OF THE JUNCTION OF THE ENTRANCE ROAD TO REDWOOD CITY MUNICIPAL MARINA, ON THE TOP OF THE CONCRETE FOUNDATION FOR THE SOUTHWEST LEG OF A POWER TRANSMISSION LINE TOWER, 67 1/2 FEET EAST OF THE CENTER LINE OF THE BOULEVARD, 0.2 FOOT SOUTHWEST OF THE STEEL LEG OF TOWER, ABOUT 3 1/2 FEET ABOVE THE GROUND, AND 1 FOOT HIGHER THAN THE BOULEVARD. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VETERANS BOULEVARD, THENCE 1.0 MILE NORTH ALONG HARBOR BOULEVARD, 170 FT SOUTH OF THE CENTER OF THE JUNCTION OF THE ENTRANCE ROAD TO REDWOOD CITY MUNICIPAL MARINA, A CHISLED 1 IN TOP OF THE CONCRETE FOUNDATION FOR THE SOUTHWEST LEG OF A POWER TRANSMISSION LINE TOWER 6, 67.5 FT EAST OF THE CENTER LINE OF THE BOULEVARD, 0.2 FT SOUTHWEST OF THE STEEL LEG OF TOWER. <p> <h2>STATION RECOVERY (2004) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 2004 (JKH) MEASURED L 37 30 07.5 N, LO 122 12 38.9 W W/ 11 FT. EPE NOTE-- HARBOR BOULEVARD IS NOW KNOWN AS SEAPORT BOULEVARD. HT0455 941 4129 TIDAL 5 http://www.geocaching.com/mark/details.asp?PID=HT0455 941 4129 TIDAL 5 Geocache Geocache 941 4129 TIDAL 5 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 4129 TIDAL 5</h1> <b> PID </b> HT0455 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 12. (N) 122 29 08. (W) SCALED <br> <b> NAVD 88 </b> 4.335 (meters) 14.22 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -32.92 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.332 (meters) 14.21 (feet) COMP <br> <b> MODELED GRAV</b> 979,968.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 613,210. </td><td> 1,824,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 3.489 (m) 11.45 (f) ADJ UNCH 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG454508(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: 5 1929 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1929 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 4.4 MI NW FROM HALF MOON BAY. 4.15 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE JUNCTION OF KELLY AVENUE AT HALF MOON BAY, THENCE 0.25 MILE SOUTHWEST ALONG CAPISTRANO ROAD, AT PRINCETON, 0.1 MILE SOUTHEAST OF THE JUNCTION OF PROSPECT WAY, IN THE TOP AND 0.3 FOOT NORTHWEST OF THE SOUTHEAST END OF THE SOUTHWEST CONCRETE HEAD WALL OF A 36-INCH CONCRETE PIPE CULVERT AND A 73-FOOT LONG RETAINING WALL, 15 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 106 FEET NORTHWEST OF THE NORTH CORNER OF A CAFE BUILDING, 10 FEET NORTHWEST OF THE SOUTHEAST END OF A STEEL GUARDRAIL, AND ABOUT LEVEL WITH THE ROAD. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. AH7470 941 4508 C TIDAL http://www.geocaching.com/mark/details.asp?PID=AH7470 941 4508 C TIDAL Geocache Geocache 941 4508 C TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <b> FBN </b> This is a Federal Base Network Control Station. <br> <h1>941 4508 C TIDAL</h1> <b> PID </b> AH7470 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 30 28.76629(N) 122 12 39.09246(W) ADJUSTED <br> <b> NAVD 88 </b> 3.57 (meters) 11.7 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 2002.75 <br> <b> X </b> -2,700,279.324 (meters) COMP <br> <b> Y </b> -4,286,169.054 (meters) COMP <br> <b> Z </b> 3,862,250.020 (meters) COMP <br> <b> LAPLACE CORR</b> -0.86 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.96 (meters) (08/23/04) GPS OBS <br> <b> GEOID HEIGHT</b> -32.51 (meters) <br> <p> <b> HORZ ORDER </b> B <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>ITRF positions are available for this station. The horizontal coordinates were established by GPS observations and adjusted by the CALIF SPA REF CEN in August 2004. This is a SPECIAL STATUS position. See SPECIAL STATUS under the DATUM ITEM on the data sheet items page. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p> <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 613,250.004 1</td><td>848,750.438</td><td> MT </td><td>0.99993813</td><td> -1 ' 02 50.8"</td></tr><tr><td>SPC CA 3 </td><td>2,011,971.05 6</td><td>065,442.06 </td><td> sFT </td><td>0.99993813</td><td> -1 ' 02 50.8"</td></tr><tr><td>UTM 10 </td><td>4,151,520.300 </td><td>569,745.372</td><td> MT </td><td>0.99965992</td><td> +0 ' 28 49.8"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000454 x 0.99993813 = 0.99994267 <br> <b>UTM 10 </b> 1.00000454 x 0.99965992 = 0.99966446 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1998)</b> 37 30 28.76288(N) 122 12 39.08900(W) AD(1998.50) A <br> ELLIP H (04/06/00) -29.01 (m) GP(1998.50) 3 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6974551520(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: IN TOP OF CONCRETE BOLLARD <br>STAMPING: 4508 C 1997 <br>MARK LOGO: NOS <br>PROJECTION: FLUSH <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - September , 2002 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1997 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19980429</td><td>GOOD </td><td>NGS</td></tr><tr><td>20000613</td><td>GOOD </td><td>NGS</td></tr><tr><td>20001205</td><td>GOOD </td><td>NGS</td></tr><tr><td>200209 </td><td>GOOD </td><td>JOHFRA</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (CSM) THE STATION IS LOCATED AT THE PORT OF REDWOOD CITY, WEST-NORTHWEST OF THE USGS PARKING COMPOUND GATE AT 599 SEAPORT BOULEVARD, IN A SMALL PARK AREA NEAR THE WATER. OWNERSHIP--U.S. PORT AUTHORITY, REDWOOD CITY. TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 101 AND SEAPORT BOULEVARD NEAR THE SOUTHWEST EDGE OF REDWOOD CITY, GO NORTHERLY FOR 2.25 KM (1.40 MI) ON SEAPORT BOULEVARD TO WHERE SEAPORT BOULEVARD TURNS EAST THROUGH A GATE AND HENRY A BEEGER RD CONTINUES NORTH. TURN LEFT, EAST FOR 0.14 KM (0.10 MI) ON SEAPORT BOULEVARD TO SEAPORT BOULEVARD ON THE RIGHT. TURN RIGHT, NORTH FOR 0.14 KM (0.10 MI) ON SEAPORT BOULEVARD TO THE USGS GATE ON THE RIGHT AND THE STATION ON THE LEFT AT THE BOLLARD. THE STATION IS SET IN A DRILL HOLE IN THE TOP OF AND NEAR THE SOUTHEAST CORNER OF A 4.5 FT (1.4 M) SQUARE RAISED CONCRETE FOUNDATION FOR BOLLARD. THIS FOUNDATION IS PART OF AN 8 FT (2.4 M) BY 16 FT (4.9 M) CONCRETE FOUNDATION. LOCATED 25.7 M (84.3 FT) WEST OF THE CENTER OF SEAPORT BOULEVARD, 15.3 M (50.2 FT) WEST OF THE NEAR RAIL OF THE TRACKS, 9.8 M (32.2 FT) EAST OF THE SEAWALL, 5.4 M (17.7 FT) NORTH OF A FIRE HYDRANT, 0.6 M (2.0 FT) SOUTHEAST OF THE BOLLARD ABOUT 0.55 M (1.80 FT) ABOVE THE GROUND LEVEL AND FLUSH WITH THE TOP OF THE FOUNDATION. <p> <h2>STATION RECOVERY (2000) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (GAS) 2.2 KM (1.35 MI) NORTHERLY ALONG SEAPORT BOULEVARD FROM THE JUNCTION OF STATE HIGHWAY 101 (EXIT STATE HIGHWAY 84-SEAPORT BOULEVARD) TO THE PORT OF REDWOOD CITY ADMINISTRATION BUILDING, THENCE 0.2 KM (0.10 MI) WESTERLY ALONG HERKNER ROAD ATO A SMALL PARK ON THE LEFT, THENCE 0.1 KM (0.05 MI) SOUTHERLY ALONG A PAVED ROAD TO A USGS FACILITY, SET NEAR THE SOUTHEAST CORNER OF A 4.5-FOOT SQUARE CONCRETE FOUNDATION FOR A BOLLARD, 25.1 M (82.3 FT) WEST OF THE ROAD CENTER, 14.8 M (48.6 FT) WEST OF THE NEAR RAIL OF A SIDE TRACK, 10.7 M (35.1 FT) EAST OF A SEA WALL, 5.6 M (18.4 FT) NORTH OF A FIRE HYDRANT, 4.4 M (14.4 FT) NORTH OF THE EXTENDED CENTER OF THE USGS ENTRANCE GATE, AND 0.6 M (2.0 FT) ABOVE THE GROUND SURFACE. NOTE--THE MARK IS ON PROPERTY OWNED BY THE U.S. PORT AUTHORITY. <p> <h2>STATION RECOVERY (2000) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (BW) RECOVERED AS DESCRIBED. <p> <p> <h2>STATION RECOVERY (2002) </h2> <p>RECOVERY NOTE BY JOHNSON-FRANK 2002 (MSP) THE ROADWAYS HAVE BEEN ALTERED AS OF SUMMER, 2001. THE 2000 HOW-TO-REACH CAN BE FOLLOWED WITH THE FOLLOWING CHANGE. AFTER DRIVING ABOUT 1 MI NORTHERLY FROM HWY 101 ALONG SEAPORT BOULEVARD, A NEW INTERSECTION, WITH A STOPLIGHT, HAS BEEN CREATED AND A DIVIDED 4-LANE ROADWAY HAS BEEN BUILT TO COMMERCIAL OFFICE BUILDINGS AT THE END OF THE ROAD. MAKE A LEFT AND THEN IMMEDIATELY TURN RIGHT ONTO OLD SEAPORT BLVD, WHICH PARALLELS THE NEW BLVD. AFTER ABOUT 0.3 MI, TURN LEFT ON HERKNER RD, PASSING THE PORT ADMINISTRATION BUILDING. THE 1998 HOW-TO-REACH CAN BE FOLLOWED WITH THE FOLLOWING CORRECTION. WHERE BEEGER RD CONTINUES NORTH, SEAPORT TURNS LEFT THROUGH A GATE, WHICH IS WESTERLY NOT EASTERLY. FOLLOW SEAPORT LEFT (WEST) 0.1 MI AND THEN RIGHT (NORTH) 0.1 MI TO THE GATE TO THE USGS OFFICE/COMPOUND AND THE STATION IN THE BOLLARD ON THE RIGHT IN THE SMALL STRIP PARK. THIS STATION WAS OBSERVED AS PART OF THE SOUTH SAN FRANCISCO BAY HEIGHT MODERNIZATION PROJECT. HT0289 941 4523 TIDAL 3 http://www.geocaching.com/mark/details.asp?PID=HT0289 941 4523 TIDAL 3 Geocache Geocache 941 4523 TIDAL 3 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 4523 TIDAL 3</h1> <b> PID </b> HT0289 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 50. (N) 122 12 18. (W) SCALED <br> <b> NAVD 88 </b> 2.02 (+/-2cm) 6.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 613,900. </td><td> 1,849,280. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.202 (m) 3.94 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG702521(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TOWER CONCRETE BUMPER <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2.8 MI N FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARBO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VETERANS BOULEVARD, THENCE 1.9 MILES NORTH ALONG HARBOR BOULEVARD, AT THE IDEAL CEMENT COMPANY PLANT, IN THE TOP OF THE WEST CORNER OF THE CONCRETE BASE OF THE NORTHWEST STEEL LEG OF POWER TRANSMISSION LINE STEEL TOWER, 47.5 FEET SOUTH OF THE SOUTHWEST CORNER OF THE OFFICE BUILDING, 0.7 FOOT WEST OF THE STEEL LEG, 1.4 FEET BELOW THE SURFACE OF A CONCRETE BUMPER BUILT AROUND THE BASE OF THE TOWER, ACCESS TO THE MARK IS THRU THE REMOVAL OF A CAP OVER A 3-INCH PIPE. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VETERANS BOULEVARD THENCE 1.85 MILE NORTH ALONG HARBOR BOULEVARD, AT THE CALIFORNIA PORTLAND CEMENT COMPANY BULK STORAGE FACILITY, IN TOP OF THE WEST CORNER OF THE CONCRETE BASE OF THE NORTHWEST STEEL LEG OF POWER TRANSMISSION LINE STEEL TOWER, 47.5 FT SOUTH OF THE SOUTHWEST CORNER OF THE OFFICE BUILDING, 0.7 FT WEST OF THE STEEL LEG, 1.4 FT BELOW TH SURFACE OF A CONCRETE BUMPER BUILT AROUND THE BASE OF THE TOWER, ACCESS TO THE MARK IS THRU THE REMOVAL OF A CAP OVER A 3-INCH PIPE. HT2346 941 4637 A TIDAL http://www.geocaching.com/mark/details.asp?PID=HT2346 941 4637 A TIDAL Geocache Geocache 941 4637 A TIDAL NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 4637 A TIDAL</h1> <b> PID </b> HT2346 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 36 11. (N) 122 12 06. (W) SCALED <br> <b> NAVD 88 </b> 5.498 (meters) 18.04 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 5.494 (meters) 18.02 (feet) COMP <br> <b> MODELED GRAV</b> 979,949.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in September 1994. <p>This Tidal Bench Mark is designated as VM 8377 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 623,780. </td><td> 1,849,760. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG704620(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CURB <br>STAMPING: 4637 A 1976 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1976 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1977 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 2.7 MI SW FROM HAYWARD. 2.7 MILES SOUTHWEST ALONG STATE HIGHWAY 92 FROM THE SAN MATEO BRIDGE TOLL PLAZA AT HAYWARD, IN TOP OF THE SOUTHEAST CURB OF THE SOUTHEAST TRAFFIC LANES, 25.4 FEET NORTHEAST OF THE NORTH CORNER OF SUBSTATION 5, 4 FEET SOUTHWEST OF STATION NUMBER 665. HT2345 941 4637 B TIDAL http://www.geocaching.com/mark/details.asp?PID=HT2345 941 4637 B TIDAL Geocache Geocache 941 4637 B TIDAL NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 4637 B TIDAL</h1> <b> PID </b> HT2345 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 36 14. (N) 122 11 54. (W) SCALED <br> <b> NAVD 88 </b> 5.504 (meters) 18.06 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 5.501 (meters) 18.05 (feet) COMP <br> <b> MODELED GRAV</b> 979,949.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in September 1994. <p>This Tidal Bench Mark is designated as VM 8378 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 623,870. </td><td> 1,850,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG707621(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CURB <br>STAMPING: 4637 B 1976 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1976 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1977 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1977 2.55 MI SW FROM HAYWARD. 2.55 MILES SOUTHWEST ALONG STATE HIGHWAY 92 FROM THE SAN MATEO BRIDGE TOLL PLAZA AT HAYWARD, IN TOP OF THE SOUTHEAST CURB OF THE SOUTHEAST TRAFFIC LANES. HT1477 99 X http://www.geocaching.com/mark/details.asp?PID=HT1477 99 X Geocache Geocache 99 X CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>99 X</h1> <b> PID </b> HT1477 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN GREGORIO (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 21 26. (N) 122 23 50. (W) SCALED <br> <b> NAVD 88 </b> 31.698 (meters) 104.00 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -32.95 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 31.676 (meters) 103.92 (feet) COMP <br> <b> MODELED GRAV</b> 979,934.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 596,840. </td><td> 1,831,940. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 30.828 (m) 101.14 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG533346(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 99 X <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - May 30, 2004 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20040530</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 7.8 MI S FROM HALF MOON BAY. 7.8 MILES SOUTH ALONG STATE HIGHWAY 1 FROM THE JUNCTION OF KELLY AVENUE AT HALF MOON BAY, 0.05 MILE SOUTH OF THE JUNCTION OF TUNITAS CREEK ROAD, IN THE TOP OF THE NORTH END OF THE EAST CONCRETE CURB OF CONCRETE BRIDGE 35-31 20/90 OVER TUNITAS CREEK, 0.3 FOOT SOUTHEAST OF THE NORTHWEST CORNER OF THE CURB, 15 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1 1/2 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (2004) </h2> <p>RECOVERY NOTE BY GEOCACHING 2004 (BGT) RECOVERED IN GOOD CONDITION. HT0450 A 110 RESET 1972 http://www.geocaching.com/mark/details.asp?PID=HT0450 A 110 RESET 1972 Geocache Geocache A 110 RESET 1972 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 110 RESET 1972</h1> <b> PID </b> HT0450 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 33 32. (N) 122 18 50. (W) SCALED <br> <b> NAVD 88 </b> 4.67 (+/-2cm) 15.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> THIRD (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 619,070. </td><td> 1,839,750. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 3.85 (m) 12.6 (f) RESET 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG605570(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 110 1932 RESET 1972 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 AT SAN MATEO. AT SAN MATEO, 0.7 MILE SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION, AT THE JUNCTION OF TWELFTH AVENUE LEADING SOUTHWEST, 28 FEET SOUTHEAST OF THE PROJECTED CENTERLINE OF THE AVENUE, 25.9 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE TRACK, 2.6 FEET NORTHWEST OF TELEGRAPH POLE E6, ABOUT 1-1/2 FEET LOWER THAN THE TRACK AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. HT1536 A 1239 http://www.geocaching.com/mark/details.asp?PID=HT1536 A 1239 Geocache Geocache A 1239 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1239</h1> <b> PID </b> HT1536 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> FRANKLIN POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 09 58. (N) 122 21 39. (W) SCALED <br> <b> NAVD 88 </b> 7.582 (meters) 24.88 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.36 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 7.577 (meters) 24.86 (feet) COMP <br> <b> MODELED GRAV</b> 979,950.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 575,570. </td><td> 1,834,740. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 6.777 (m) 22.23 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG567134(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: A 1239 1972 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 14.3 MI NW FROM DAVENPORT. 14.3 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, 0.1 MILE NORTH OF A SERVICE STATION AND CAFE, AT BRIDGE 5/75 OVER GAZOZ CREEK, 150 FEET SOUTH OF THE JUNCTION OF GAZOS CREEK ROAD, 21 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, IN THE TOP AND 0.6 FOOT SOUTH OF THE NORTH END OF THE NORTHEAST WING WALL, AND ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT1506 A 1240 http://www.geocaching.com/mark/details.asp?PID=HT1506 A 1240 Geocache Geocache A 1240 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1240</h1> <b> PID </b> HT1506 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN GREGORIO (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 15 34. (N) 122 24 48. (W) SCALED <br> <b> NAVD 88 </b> 15.328 (meters) 50.29 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.20 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 15.317 (meters) 50.25 (feet) COMP <br> <b> MODELED GRAV</b> 979,957.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 586,020. </td><td> 1,830,290. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 14.516 (m) 47.62 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG520238(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: A 1240 1972 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 22.1 MI NW FROM DAVENPORT. 22.1 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, AT THE JUNCTION OF PESCADERO ROAD WEST, IN THE TOP AND 0.8 FOOT NORTH OF THE SOUTH END OF THE EAST CONCRETE HEAD WALL OF AN 18-INCH PIPE CULVERT UNDER THE ROAD, 47 1/2 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 54 FEET EAST OF THE CENTER LINE OF THE ROAD, ABOUT LEVEL WITH THE HIGHWAY AND THE ROAD. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT1535 A 1242 http://www.geocaching.com/mark/details.asp?PID=HT1535 A 1242 Geocache Geocache A 1242 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1242</h1> <b> PID </b> HT1535 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> FRANKLIN POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 09 58. (N) 122 21 39. (W) SCALED <br> <b> NAVD 88 </b> 8.438 (meters) 27.68 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.36 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 8.432 (meters) 27.66 (feet) COMP <br> <b> MODELED GRAV</b> 979,950.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 575,570. </td><td> 1,834,740. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 7.633 (m) 25.04 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG567134(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: SEPT 1972 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 14.3 MI NW FROM DAVENPORT. 14.3 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, AT THE JUNCTION OF GAZOS CREEK ROAD, 71 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 93 FEET SOUTH OF THE CENTER LINE OF THE ROAD, 83.6 FEET NORTHEAST OF THE NORTHEAST CORNER OF CONCRETE BRIDGE 35-51, 1 1/2 FEET WEST OF THE WEST ONE OF TWO WOODEN POSTS SUPPORTING A LARGE FOREST SERVICE SIGN, 42 1/2 FEET NORTH-NORTHEAST OF A POWER POLE, 1.7 FEET SOUTH OF A WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, A DISK ON THE TOP OF A 5/8-INCH COPPER COATED ROD DRIVEN TO SUDDEN REFUSAL AT THE DEPTH OF 5 FEET. THE UPPER PORTION OF THE ROD IS ENCASED IN A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT2422 A 1384 http://www.geocaching.com/mark/details.asp?PID=HT2422 A 1384 Geocache Geocache A 1384 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> SACS </b> This is a Secondary Airport Control Station. <br> <h1>A 1384</h1> <b> PID </b> HT2422 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 37 16.68511(N) 122 22 06.58218(W) ADJUSTED <br> <b> NAVD 88 </b> 2.87 (meters) 9.4 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,707,956.480 (meters) COMP <br> <b> Y </b> -4,272,247.323 (meters) COMP <br> <b> Z </b> 3,872,218.195 (meters) COMP <br> <b> LAPLACE CORR</b> 0.54 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -29.74 (meters) (05/31/01) GPS OBS <br> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <b> ELLP ORDER </b> SECOND CLASS I <br> <p>This mark is at San Francisco Intl Airport (SFO) <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 2001. This is a SPECIAL STATUS position. See SPECIAL STATUS under the DATUM ITEM on the data sheet items page. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by GPS observations and a high-resolution geoid model. <p>GPS derived orthometric heights for airport stations designated as PACS or SACS are published to 2 decimal places. This maintains centimeter relative accuracy between the PACS and SACS. It does not indicate centimeter accuracy relative to other marks which are part of the NAVD 88 network. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 626,089.344 1</td><td>835,067.359</td><td> MT </td><td>0.99993173</td><td> -1 ' 08 38.2"</td></tr><tr><td>SPC CA 3 </td><td>2,054,094.79 6</td><td>020,550.16 </td><td> sFT </td><td>0.99993173</td><td> -1 ' 08 38.2"</td></tr><tr><td>UTM 10 </td><td>4,163,986.460 </td><td>555,728.639</td><td> MT </td><td>0.99963825</td><td> +0 ' 23 07.8"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000467 x 0.99993173 = 0.99993640 <br> <b>UTM 10 </b> 1.00000467 x 0.99963825 = 0.99964292 <br> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5572963986(NAD 83) <br>MARKER: I = METAL ROD <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: A 1384 1986 <br>MARK LOGO: NGS <br>PROJECTION: FLUSH <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - January 29, 2002 <br>ROD/PIPE-DEPTH: 26.8 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1986 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>20001205</td><td>GOOD </td><td>NGS</td></tr><tr><td>20020129</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 IN SAN FRANCISCO INTL AIRPORT. IN SAN FRANCISCO INTERNATIONAL AIRPORT, ABOUT 1.6 KM (1.0 MI) NORTHEAST OF THE MAIN TERMINAL PARKING GARAGE, AT THE NORTHWEST CORNER OF AN ANTENNA TOWER, 24.4 METERS (80.0 FT) NORTHWEST OF THE EDGE OF SAN FRANCISCO BAY, IN THE EXTREME NORTHEAST CORNER OF AN ASPHALT PARKING AREA, 10.3 METERS (33.8 FT) NORTHEAST OF THE CENTERLINE OF A PERIMETER ROAD, 5.2 METERS (16.9 FT) NORTH OF THE NORTHWEST CORNER OF THE CONCRETE FOUNDATION OF THE TOWER. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.6 METERS WSW FROM A WITNESS POST THE MARK IS ABOVE LEVEL WITH THE PERIMETER ROAD. <p> <h2>STATION RECOVERY (2000) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2000 (BW) THIS STATION IS THE DESIGNATED SECONDARY AIRPORT CONTROL STATION (SACS). THE STATION IS LOCATED AT THE SAN FRANCISCO INTERNATIONAL AIRPORT, AT THEEASTERN ANGLE OF THE AIRPORT BOUNDARY, NORTHEAST OF THE INTERSECTION OF RUNWAYS 1R-19L AND 10L-28R, WITHIN A FENCED IN ENCLOSURE. OWNERSHIP--CITY AND COUNTY OF SAN FRANCISCO, SAN FRANCISCO AIRPORT COMMISSION, SAN FRANCISCO, CA 94102. FOR ACCESS--CONTACT--AIRPORT OPERATIONS--GLEN BROTMAN, PHONE--650-794-3349. CHIEF AIRPORT SURVEYORS--HUGO TUPAC, PHONE--650-821-7770, FAX--650-635-2246, FAA FACILITIES MANAGER--PAUL CARDELARIE, PHONE--650-876-2839. NOTE--CONTACT THE AIRPORT A MINIMUM OF ONE WEEK IN ADVANCE TO MAKE ARRANGEMENTS FOR ACCESS TO THE AIRPORT. ESCORT BY AN AIRPORT SAFETY OFFICER IS MANDITORY FOR ALL MOVEMENT NEAR RUNWAYS. BADGES AND VEHICLE PASSES ARE MANDITORY. EAR PROTECTION IS HIGHLY RECOMMENDED. AIRPORT SURVEY PERSONNEL ARE ABLE TO ESCORT YOU TO ALL STATION ON THE AIRPORT. TO REACH THE STATION FROM THE NORTHFIELD GATE LOCATED AT THE NORTHERN PERIMETER OF THE AIRPORT, PASS THROUGH THE GATE AND GO SOUTH FOR 0.2 MILE ON THE ACCESS-PERIMETER ROAD TO TAXIWAY Q. CROSS TAXIWAY Q AND CONTINUE ON THE PERIMETER SERVICE ROAD SOUTHEAST FOR 1.7 MILES TO RUNWAY 19R AND THE SERVICE ROAD TURNS NORTHEAST. TURN NORTHEAST AND CONTINUE FOR 0.4 MILES TO WHERE THE ROAD TURNS RIGHT, SOUTHEAST, CONTINUE ON SERVICE ROAD FOR 0.4 MILE, CROSSING THE APPROACHE TO 19R AND 19L. CONTINUE FOLLOWING THE SERVICE ROAD TO THE SOUTHWEST FOR 0.6 MILES TO THE STATION ON THE LEFT. THE STATION IS A PUNCH HOLE ON THE END OF A STEEL ROD DRIVEN TO REFUSAL ENCASED IN A PVC PIPE WITH LOGO CAP FLUSH WITH THE GROUND. LENGTH OF PVC PIPE AND STEEL ROD ARE UNKNOWN. THE STATION IS ENCLOSED WITHIN A 3.04 X 4.57 M (10 X 15 FT) CHAINLINK FENCE WITH GATE. IT IS 24.4 M (80.0 FT) NORTWEST OF THE SHORE OF SAN FRANCISCO BAY, 10.3 M (33.8 FT) NORTHEAST OF THE CENTERLINE OF THE SERVICE ROAD, 7.0 M (23.0 FT) SOUTHWEST OF THE SOUTH END OF A SEAWALL, 5.2 M (16.9 FT) NORTH OF THE NORTH CORNER OF A CONCRETE FOUNDATION. NOTE-----SANDBAGS ARE HIGHLY RECOMMENDED DUE TO AIRCRAFT TURBULANCE. <p> <p> <h2>STATION RECOVERY (2002) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 2002 (DAH) RECOVERED AS DESCRIBED <p> HT1344 A 151 http://www.geocaching.com/mark/details.asp?PID=HT1344 A 151 Geocache Geocache A 151 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 151</h1> <b> PID </b> HT1344 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 25 42. (N) 122 10 42. (W) SCALED <br> <b> NAVD 88 </b> 35.76 (+/-2cm) 117.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 604,360. </td><td> 1,851,470. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 34.924 (m) 114.58 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG726427(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BALUSTRADE <br>STAMPING: A 151 1933 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 AT STANFORD UNIVERSITY. ON THE STANFORD UNIVERSITY CAMPUS, AT THE INTERSECTION OF GOVERNOR AVENUE AND SEARSVILLE ROAD, AT THE CARNEGIE INSTITUTE BUILDING, SET VERTICALLY IN THE EAST FACE OF THE NORTH CONCRETE BALUSTRADE OF THE MAIN ENTRANCE, AND 3.3 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1988 (PS) RECOVERED IN GOOD CONDITION. HT1383 A 152 http://www.geocaching.com/mark/details.asp?PID=HT1383 A 152 Geocache Geocache A 152 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 152</h1> <b> PID </b> HT1383 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 24 00. (N) 122 15 34. (W) SCALED <br> <b> NAVD 88 </b> 224.00 (+/-2cm) 734.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.45 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 601,350. </td><td> 1,844,230. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 223.121 (m) 732.02 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG655395(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 152 1933 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 2.9 MI S FROM WOODSIDE. 2.9 MILES SOUTH ALONG LA HONDA ROAD FROM WOODSIDE SCHOOL AT WOODSIDE, ON THE OUTSIDE OF A SLIGHT CURVE, AT THE APPROXIMATE CENTER OF A LONG TURNOUT, ABOUT 120 YARDS NORTHEAST OF 10-INCH CORRUGATED METAL PIPE CULVERT A-2.59, 239.5 FEET SOUTHWEST OF AND ACROSS THE ROAD FROM THE CENTER OF THE SOUTHEAST END OF 12-INCH CORRUGATED METAL PIPE CULVERT A-2.46, 73 FEET SOUTHWEST OF AN 8-INCH ELM TREE, 32 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 13 1/2 FEET SOUTH OF A STUMP MARKED BY A WHITE PAINTED ARROW, 12 FEET SOUTH OF A 12-INCH REDWOOD TREE, 4 FEET SOUTHEAST OF THE NORTHWEST EDGE OF THE SHOULDER OF THE ROAD, 1.3 FEET SOUTHWEST OF A WITNESS POST, ABOUT LEVEL WITH THE SHOULDER, 0.3 FOOT UNDERGROUND, AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT1518 A 212 http://www.geocaching.com/mark/details.asp?PID=HT1518 A 212 Geocache Geocache A 212 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 212</h1> <b> PID </b> HT1518 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PIGEON POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 12 55. (N) 122 24 21. (W) SCALED <br> <b> NAVD 88 </b> 13.724 (meters) 45.03 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.32 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 13.715 (meters) 45.00 (feet) COMP <br> <b> MODELED GRAV</b> 979,948.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 581,110. </td><td> 1,830,850. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 12.927 (m) 42.41 (f) ADJ UNCH 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG527189(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: A 212 1935 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1935 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 18.8 MI NW FROM DAVENPORT. 18.85 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, AT THE CROSSING OF A POWER LINE, DIRECTLY ACROSS THE HIGHWAY FROM A TWO STORY HOUSE, IN THE TOP OF THE CENTER OF THE NORTHWEST CONCRETE WING WALL OF A BRIDGE UNDER THE FORMER HIGHWAY, 13 FEET WEST OF THE CENTER LINE OF THE FORMER HIGHWAY, 95 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 57 FEET EAST OF THE NORTH END OF THE EAST CONCRETE HEAD WALL OF CULVERT 10/35, 1.0 FOOT NORTHWEST OF THE NORTHWEST END OF A CONCRETE GUARDRAIL, 1.0 FOOT SOUTHEAST OF THE NORTHWEST END OF THE WING WALL, ABOUT LEVEL WITH THE FORMER HIGHWAY, AND 10 FEET LOWER THAN THE NEW HIGHWAY. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT1580 A 387 http://www.geocaching.com/mark/details.asp?PID=HT1580 A 387 Geocache Geocache A 387 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 387</h1> <b> PID </b> HT1580 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 27 25. (N) 122 20 19. (W) SCALED <br> <b> NAVD 88 </b> 590.70 (+/-2cm) 1938.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.49 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 607,800. </td><td> 1,837,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 589.806 (m) 1935.06 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG584457(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 387 1936 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1936 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 11.6 MI S FROM SAN MATEO. ABOUT 0.7 MILE SOUTHWEST ALONG THIRD AVENUE FROM THE SOUTHERN PACIFIC STATION AT SAN MATEO, THENCE 3.2 MILES SOUTHWEST ALONG CRYSTAL SPRINGS ROAD, THENCE 7.65 MILES SOUTHEAST ALONG SKYLINE BOULEVARD, AT THE SOUTH END OF A CURVE, 47 1/2 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, 86 FEET SOUTH OF THE CENTER OF THE WEST END OF CULVERT C-8.63, 1.1 FEET EAST OF THE FENCE, 1.5 FEET WEST OF A WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY AND IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT. HT0505 A 388 http://www.geocaching.com/mark/details.asp?PID=HT0505 A 388 Geocache Geocache A 388 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 388</h1> <b> PID </b> HT0505 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 29. (N) 122 21 18. (W) SCALED <br> <b> NAVD 88 </b> 111.57 (+/-2cm) 366.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 613,500. </td><td> 1,836,010. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 110.702 (m) 363.19 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG570514(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: TOWER FOUNDATION <br>STAMPING: A 388 1937 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1937 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 5.9 MI SW FROM SAN MATEO. ABOUT 0.7 MILE SOUTHWEST ALONG THIRD AVENUE FROM THE SOUTHERN PACIFIC STATION AT SAN MATEO, THENCE 3.2 MILES SOUTHWEST ALONG CRYSTAL SPRINGS ROAD, THENCE 2.0 MILES SOUTH ALONG SKYLINE BOULEVARD, 0.2 MILE SOUTHWEST OF THE SOUTHWEST END OF THE SPILLWAY BETWEEN UPPER AND LOWER CRYSTAL SPRINGS RESERVOIRS, AT THE CROSSING OF A STEEL TOWER POWER TRANSMISSION LINE, IN THE TOP OF THE SOUTH SIDE OF THE CONCRETE FOUNDATION OF TOWER 17-8 (FIRST TOWER NORTH OF HIGHWAY), 60 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY AND ABOUT 3 1/2 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT0283 A 390 CASLC http://www.geocaching.com/mark/details.asp?PID=HT0283 A 390 CASLC Geocache Geocache A 390 CASLC CASLC Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 390 CASLC</h1> <b> PID </b> HT0283 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 30 57. (N) 122 12 22. (W) SCALED <br> <b> NAVD 88 </b> 2.35 (+/-2cm) 7.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 614,110. </td><td> 1,849,190. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.529 (m) 5.02 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG701523(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: STEP <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CASLC</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2.8 MI N FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.7 MILE EAST ALONG VERTERANS BOULEVARD, THENCE 1.9 MILES NORTH ALONG HARBOR BOULEVARD, AT THE IDEAL CEMENT COMPANY PLANT, ABOUT 0.1 MILE NORTH AND 0.1 MILE WEST OF BENCH MARK TIDAL 3, ABOUT 300 FEET SOUTH OF BENCH MARK 12 (PPC), AT THE EAST ENTRANCE TO THE TRANSFORMER BUILDING FOR SALT WATER PUMPS, IN THE TOP OF THE SOUTHEAST CORNER OF THE CONCRETE STEPS, 28 FEET EAST OF THE EAST BANK OF REDWOOD CREEK, AND ABOUT LEVEL WITH THE GROUND. NOTE-- THIS MARK PREVIOUSLY DESIGNATED A 396 HT1298 A 554 http://www.geocaching.com/mark/details.asp?PID=HT1298 A 554 Geocache Geocache A 554 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 554</h1> <b> PID </b> HT1298 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 29 12. (N) 122 10 43. (W) SCALED <br> <b> NAVD 88 </b> 3.27 (+/-2cm) 10.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 610,830. </td><td> 1,851,560. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.443 (m) 8.02 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG726491(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE INTERCEPTOR BOX <br>STAMPING: A 554 1956 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1956 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 3 MI E FROM REDWOOD CITY. 0.25 MILE NORTH ALONG MAIN STREET FROM THE WELLS FARGO BANK AT REDWOOD CITY, THENCE 0.75 MILE EAST ALONG VETERANS BOULEVARD, THENCE 1.85 MILES EAST ALONG THE BAYSHORE FREEWAY, THENCE 0.2 MILE NORTH ALONG MARSH ROAD, AT MENLO PARK SANITARY DISTRICT PUMPING STATION, INSIDE OF A FENCE, IN THE TOP OF THE SOUTHWEST CORNER OF A 25-FOOT DEEP CONCRETE INTERCEPTOR BOX, 11.9 FEET SOUTH OF THE SOUTHWEST CORNER OF THE PUMP STATION BUILDING, AND ABOUT 1/2 FOOT ABOVE THE GROUND. HT1395 A 592 http://www.geocaching.com/mark/details.asp?PID=HT1395 A 592 Geocache Geocache A 592 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 592</h1> <b> PID </b> HT1395 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 29 04. (N) 122 08 39. (W) SCALED <br> <b> NAVD 88 </b> 2.52 (+/-2cm) 8.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 610,530. </td><td> 1,854,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.699 (m) 5.57 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG756489(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 592 1940 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1940 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 1.3 MI NW FROM MENLO PARK. 0.8 MILE NORTHEAST ALONG WILLOW ROAD FROM THE INTERSECTION OF BAYSHORE HIGHWAY AT MENLO PARK, THENCE 0.5 MILE NORTHEAST ALONG DUMBARTON ROAD, 0.5 MILE NORTHEAST OF THE CROSSING OF THE SOUTHERN PACIFIC COMPANY RAILROAD, 312 FEET NORTHEAST OF THE CENTER OF THE SOUTHEAST END OF A 36-INCH CONCRETE PIPE CULVERT, 18 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD, 4.1 FEET SOUTHWEST OF A POWER LINE POLE WITH A GUY WIRE, 1.9 FEET SOUTHEAST OF A WOODEN FENCE, 0.8 FOOT NORTHEAST OF A WITNESS POST, ABOUT 1 FOOT LOWER THAN THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. HT1396 A 592 RESET 1960 http://www.geocaching.com/mark/details.asp?PID=HT1396 A 592 RESET 1960 Geocache Geocache A 592 RESET 1960 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 592 RESET 1960</h1> <b> PID </b> HT1396 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 29 04. (N) 122 08 39. (W) SCALED <br> <b> NAVD 88 </b> 3.01 (+/-2cm) 9.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 610,530. </td><td> 1,854,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.188 (m) 7.18 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG756489(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 592 RESET 1960 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1960 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1961 1.4 MI SW FROM DUMBARTON BRIDGE. 1.4 MILES SOUTHWEST ALONG DUMBARTON ROAD FROM THE SOUTHWEST END OF DUMBARTON BRIDGE, 0.5 MILE NORTHEAST OF BENCH MARK W 150 AND THE CROSSING OF THE SOUTHERN PACIFIC RAILROAD, ON THE OUTSIDE OF A CURVE, 24 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, 64 FEET EAST AND ACROSS THE ROAD FROM POWER POLE 12, 41 FEET NORTHEAST OF GUY POLE WITH TWO GUY WIRES, 2.7 FEET SOUTHEAST OF A STEEL GUARDRAIL, 1.7 FEET NORTHWEST OF A WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3 FOOT ABOVE THE GROUND. NOTE-- THIS MARK IS 1.3 MILES NORTHEAST OF MENLO PARK. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION. HT1692 A 876 http://www.geocaching.com/mark/details.asp?PID=HT1692 A 876 Geocache Geocache A 876 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 876</h1> <b> PID </b> HT1692 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 28 13. (N) 122 13 23. (W) SCALED <br> <b> NAVD 88 </b> 10.51 (+/-2cm) 34.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.51 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 609,090. </td><td> 1,847,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 9.675 (m) 31.74 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG687473(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE FOUNDATION <br>STAMPING: A 876 1954 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1954 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1954 AT REDWOOD CITY. AT REDWOOD CITY, AT THE T JUNCTION OF MURRAY COURT AND WOODSIDE ROAD, AT WASHINGTON SCHOOL, AT THE PRIMARY BUILDING, SET VERTICALLY IN THE WEST CONCRETE WALL OF THE FOUNDATION, 1.0 FOOT SOUTH OF THE NORTHWEST CORNER, AND 0.6 FOOT HIGHER THAN THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 AT THE JUNCTION OF MURRY COURT AND WOODSIDE ROAD AT WASHINGTON SCHOOL, AT THE PRIMARY BUILDING SET VERTICALLY IN THE WEST CONCRETE WALL OF THE FOUNDATION 1.0 FOOT SOUTH OF THE NORTHWEST CORNER AND 0.6 FOOT HIGHER THAN THE GROUND. HT0451 AA 110 http://www.geocaching.com/mark/details.asp?PID=HT0451 AA 110 Geocache Geocache AA 110 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>AA 110</h1> <b> PID </b> HT0451 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 33 40. (N) 122 19 20. (W) SCALED <br> <b> NAVD 88 </b> 11.64 (+/-2cm) 38.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 619,330. </td><td> 1,839,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 10.808 (m) 35.46 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG598573(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: FLAGPOLE BASE <br>STAMPING: AA 110 1932 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - August 10, 2003 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20030810</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO. AT SAN MATEO, AT CENTRAL SAN MATEO CITY PARK, ABOUT 160 YARDS SOUTHWEST OF THE T JUNCTION OF LAUREL AVENUE AND 7TH STREET, 400 FEET NORTHEAST OF EL CAMINO REAL (U.S. HIGHWAY 101), IN THE TOP OF THE SOUTHEAST SIDE OF THE CONCRETE BASE OF A FLAGPOLE, 0.8 FOOT SOUTHEAST OF THE SOUTHEAST SIDE OF THE IRON BASE OF THE FLAGPOLE, AND 0.5 FOOT HIGHER THAN THE GROUND. NOTE-- DISK SLANTING, ROD WAS HELD OVER THE WORD OR BETWEEN THE WORDS FINE AND IMPRISONMENT DURING THE 1956 RELEVELING. <p> <h2>STATION RECOVERY (1972) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1972 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 AT SAN MATEO, AT CENTRAL SAN MATEO CITY PARK, ABOUT 160 YARDS SOUTHWEST OF THE T JUNCTION OF LAUREL AVENUE AND 7 TH STREET, 400 FT NORTHEAST OF EL CAMINO REAL (US HIGHWAY 101), IN THE TOP OF THE SOUTHEAST SIDE OF THE CONCRETE BASE OF A FLAG POLE, 0.8 FT SOUTHEAST OF THE SOUTHEAST SIDE OF THE IRON BASE OF THE FLAG POLE, NOTE DISK SLANTING, ROD WAS HELD OVER THE WORD -OR- BETWEEN THE WORDS -FINE AND IMPRISONMENT-. <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY GEOCACHING 2003 (CSM) CONDITION AS DESCRIBED IN 1976. HT2773 AIRPORT BCN HALF MOON BAY APT http://www.geocaching.com/mark/details.asp?PID=HT2773 AIRPORT BCN HALF MOON BAY APT Geocache Geocache AIRPORT BCN HALF MOON BAY APT CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>AIRPORT BCN HALF MOON BAY APT</h1> <b> PID </b> HT2773 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 30 57.72934(N) 122 29 54.09968(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 9.60 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.94 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 614,646.359 1</td><td>823,356.293</td><td> MT </td><td>0.99993755</td><td> -1 ' 13 24.5"</td></tr><tr><td>SPC CA 3 </td><td>2,016,552.26 5</td><td>982,128.10 </td><td> sFT </td><td>0.99993755</td><td> -1 ' 13 24.5"</td></tr><tr><td>UTM 10 </td><td>4,152,238.595 </td><td>544,330.570</td><td> MT </td><td>0.99962421</td><td> +0 ' 18 19.8"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 30 57.71697(N) 122 29 54.09398(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 30 57.92472(N) 122 29 50.17139(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG4433152239(NAD 83) <br>MARKER: 21 = AIRPORT BEACON <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1962 </td><td>FIRST OBSERVED </td><td>CGS</td></tr><tr><td>1964 </td><td>GOOD </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1962 (WRH) THE OBJECT OBSERVED WAS THE LIGHT BEACON ATOP A 50-FOOT FOUR LEGGED STEEL STRUCTURE, LOCATED ON THE NORTHEAST END OF THE RUNWAY, ABOUT 5.5 MILES NORTHWEST OF THE TOWN OF HALF MOON BAY, 1.0 MILE NORTH OF PILLAR POINT, 1.0 MILE NORTH OF THE TOWN OF PRINCETON AND ABOUT 100 YARDS WEST OF STATE HIGHWAY 1. <p> <h2>STATION RECOVERY (1964) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (PAS) LOCATED ABOUT 5 MILES NORTH-NORTHWEST OF THE TOWN OF HALF MOON BAY, ABOUT 1 MILE NORTH-NORTHWEST OF THE TOWN OF PRINCETON, ABOUT 1/4 MILE NORTHWEST OF THE JUNCTION OF THE ENTRANCE ROAD TO THE AIRPORT AND STATE HIGHWAY 1 AND ABOUT 150 FEET SOUTHWEST OF THE HIGHWAY. AT THE HALF MOON BAY AIRPORT. <p>THE STATION IS THE SPINDLE ON WHICH THE DOUBLE-LAMP AERO BEACON ROTATES. THE LENSES OF THE BEACON ARE GREEN AND WHITE. THE BEACON IS ATOP A SKELETON STEEL TOWER. AE4371 ALIEN http://www.geocaching.com/mark/details.asp?PID=AE4371 ALIEN Geocache Geocache ALIEN NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>ALIEN</h1> <b> PID </b> AE4371 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 30 53.67319(N) 122 12 20.88425(W) ADJUSTED <br> <b> NAVD 88 </b> 42.2 (meters) 138. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.77 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1997. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 614,009.542 1</td><td>849,211.524</td><td> MT </td><td>0.99993763</td><td> -1 ' 02 39.6"</td></tr><tr><td>SPC CA 3 </td><td>2,014,462.97 6</td><td>066,954.81 </td><td> sFT </td><td>0.99993763</td><td> -1 ' 02 39.6"</td></tr><tr><td>UTM 10 </td><td>4,152,291.647 </td><td>570,185.919</td><td> MT </td><td>0.99966068</td><td> +0 ' 29 01.2"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99999848 x 0.99993763 = 0.99993611 <br> <b>UTM 10 </b> 0.99999848 x 0.99966068 = 0.99965916 <br> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/20/97) 41.4 (m) 136. (f) H LEVEL <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG7018652292(NAD 83) <br>MARKER: H = DRILL HOLE <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1982 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1983 </td><td>GOOD </td><td>NOS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1982 (PRC) THE STATION IS LOCATED ATOP THE CONCRETE SILOS AT LONE STAR CEMENT WORKS, AT THE EAST END OF SEAPORT BLVD. IN REDWOOD CITY. TO REACH STATION, GO EAST ON SEAPORT BLVD. FROM HIGHWAY 101 TO THE EAST END, GO THROUGH THE GATE AT LONE STAR CEMENT COMPANY,TO THE OFFICE. AT THE OFFICE MAKE ARRANGEMENTS TO USE THE SERVICE ELEVATOR TO REACH THE ROOF. THE ELEVATOR WILL PUT PASSANGERS AT SOUTH EAST CORNER OF THE GROUP OF SILOS. FROM THE ELEVATOR WALK ACROSS THE ROOF TO THE NORTH CORNER OF THE ROOF STRUCTURE. THE STATION IS A STANDARD DISK STAMPED---ALIEN 1982---, SET ON THE WEST SIDE OF THE TOP OF THE NORTHWESTERN MOST SILO, 5.8 FEET FROM THE EDGE OF SILO. IT IS 24.8 FEET FROM THE JUNCTION OF THE NORTHERNMOST SILO AND NEXT SILO IN LINE ALONG WATER SIDE OF GROUP, 2.55 FEET OUTWARD FROM 3.5 FEET METAL GUARD RAILING AND 16.0 FEET FROM THE NEAREST CORNER OF THE NEAREST CONCRETE PIPE SUPPORT ON ROOF TOP. REFERENCE MARK 1 IS A STANDARD NATIONAL OCEAN SURVEY DISK STAMPED---ALIEN RM 1 1982--- SET WITH EPOXY TO THE CONCRETE ROOF, AT THE WESTERN MOST EXTREMITY. WALK ALONG THE ROOF ON THE WATER SIDE, AT THE END OF THE GROUP OF SILOS 4.2 FEET INSIDE THE GUARD RAILING, AT THE POINT WHERE THE BASE OF THE RAILING TURNS NEAR THE EDGE OF ROOF, 3.8 FEET FROM EDGE OF THE RAILING ON WATER SIDE AND 4.65 FEET FROM RAILING ON REDWOOD CITY SIDE, CURVED PORTION, 5.0 FEET FROM ACCESS LADDER ON EDGE OF SILO AND ABOUT 10 FEET FROM NEAREST CONCRETE PIPE SUPPORT. DESCRIBED BY B.H. LUND <p> <h2>STATION RECOVERY (1983) </h2> <p>RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1983 (PRC) THE STATION WAS RECOVERED. AE4374 ALIEN RM 1 http://www.geocaching.com/mark/details.asp?PID=AE4374 ALIEN RM 1 Geocache Geocache ALIEN RM 1 USCG Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>ALIEN RM 1</h1> <b> PID </b> AE4374 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> REDWOOD POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 30 52.36203(N) 122 12 21.51445(W) ADJUSTED <br> <b> NAVD 88 </b> 42.2 (meters) 138. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.78 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1997. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 613,969.410 1</td><td>849,195.315</td><td> MT </td><td>0.99993765</td><td> -1 ' 02 40.0"</td></tr><tr><td>SPC CA 3 </td><td>2,014,331.31 6</td><td>066,901.63 </td><td> sFT </td><td>0.99993765</td><td> -1 ' 02 40.0"</td></tr><tr><td>UTM 10 </td><td>4,152,251.109 </td><td>570,170.790</td><td> MT </td><td>0.99966065</td><td> +0 ' 29 00.8"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99999848 x 0.99993765 = 0.99993613 <br> <b>UTM 10 </b> 0.99999848 x 0.99966065 = 0.99965913 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> RAVEN </td><td>131&deg; 45' 52.8"</td></tr><tr><td>UTM 10 </td><td> RAVEN </td><td>130&deg; 14' 12.0"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>AE4372</td><td>RAVEN </td><td>APPROX. 3.5 KM</td><td>130&deg; 43' 12.8"</td></tr><tr><td>HT2759</td><td>SAN MATEO BRIDGE TRANSM TWR 18 </td><td>APPROX. 8.5 KM</td><td>331&deg; 47' 45.1"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/20/97) 41.4 (m) 136. (f) H LEVEL <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG7017152251(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1982 </td><td>MONUMENTED </td><td>USCG</td></tr><tr><td>1983 </td><td>GOOD </td><td>NOS</td></tr><tr><td>1985 </td><td>GOOD </td><td>NOS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY US COAST GUARD 1982 (MEF) SEE DESCRIPTION FOR STATION ALIEN. <p> <h2>STATION RECOVERY (1983) </h2> <p>RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1983 (PRC) THE STATION WAS RECOVERED AS DESCRIBED, WITH THE FOLLOWING CHANGE THE ROOF WAS SEALED WITH BITUMASTICK. DESCRIBED BY F.L.R.,B.H.L. <p> <h2>STATION RECOVERY (1985) </h2> <p>RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1985 (PTS) THE STATION WAS RECOVERED AT THIS DATE. STATION RECOVERED AS DESCRIBED. RECOVERED BY F.L. ROSARIO. HT3309 ANO http://www.geocaching.com/mark/details.asp?PID=HT3309 ANO Geocache Geocache ANO CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>ANO</h1> <b> PID </b> HT3309 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> POINT ANO NUEVO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 07 03.94314(N) 122 20 10.66208(W) ADJUSTED <br> <b> NAVD 88 </b> 7. (meters) 23. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 8.73 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -33.57 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 570,161.276 1</td><td>836,812.859</td><td> MT </td><td>0.99998983</td><td> -1 ' 07 27.3"</td></tr><tr><td>SPC CA 3 </td><td>1,870,604.12 6</td><td>026,276.85 </td><td> sFT </td><td>0.99998983</td><td> -1 ' 07 27.3"</td></tr><tr><td>UTM 10 </td><td>4,108,142.311 </td><td>558,963.024</td><td> MT </td><td>0.99964283</td><td> +0 ' 24 01.9"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000420 x 0.99998983 = 0.99999403 <br> <b>UTM 10 </b> 1.00000420 x 0.99964283 = 0.99964703 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> RADIO MAST TOP </td><td>138&deg; 29' 08.5"</td></tr><tr><td>UTM 10 </td><td> RADIO MAST TOP </td><td>136&deg; 57' 39.3"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2783</td><td>ANO RM 2 </td><td> 22.132 METERS</td><td>037&deg; 55' </td></tr><tr><td>HT3307</td><td>RADIO MAST TOP </td><td>APPROX. 0.8 KM</td><td>137&deg; 21' 41.2"</td></tr><tr><td>DB2782</td><td>ANO RM 1 </td><td> 21.445 METERS</td><td>333&deg; 13' </td></tr><tr><td>HT3298</td><td>OIL DERRICK </td><td>APPROX. 1.9 KM</td><td>358&deg; 46' 43.3"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 07 03.93317(N) 122 20 10.64792(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 07 04.12800(N) 122 20 06.74800(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5896308142(NAD 83) <br>MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1932 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1934 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1953 </td><td>SEE DESCRIPTION </td><td>AMS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 (CDM) ON THE TOP OF A BRUSH-COVERED SAND DUNE ABOUT 40 FEET IN ELEVATION AND 75 YARDS E OF THE HIGH-WATER LINE, AND ABOUT 1/4 MILE N OF THE PLACE WHERE THE COAST GUARD TELEPHONE LINE ENTERS THE WATER TO CONNECT WITH ANO NUEVO LIGHTHOUSE. <p>SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A, 7A, AND 11A. <p>TO REACH THE STATION FROM PIGEON POINT LIGHTHOUSE, FOLLOW THE COAST ROAD S FOR 6.7 MILES, THEN TURN W ON THE ROAD TO THE GOVERNMENT LIGHTHOUSE RESERVATION AT THE E END OF THE SAND DUNES. FROM HERE PACK ALONG THE TELEPHONE LINE TO THE COAST AND THEN PROCEED N 1/4 MILE TO THE STATION. <p> <h2>STATION RECOVERY (1932) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (FLP) RECOVERED AS DESCRIBED. DESCRIPTION ADEQUATE. THE OBSERVING STAND BUILT BY LIEUTENANT MEANEY WAS LEFT IN PLACE. <p> <h2>STATION RECOVERY (1934) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (FHH) THIS STATION IS ON THE S END OF A BRUSH-COVERED SAND DUNE, ABOUT 40 FEET ABOVE AND 80 METERS E OF THE HIGH-WATER LINE. THIS IS THE SECOND DUNE E OF THE BEACH AT THIS POINT AND IS ABOUT 1/4 MILE NW OF A LINE OF TELEPHONE POLES LEADING TO THE LIGHTHOUSE ON ANO NUEVO ISLAND. THE STATION IS MARKED WITH STANDARD DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1A AND 7A. THE SAND HAS BLOWN AWAY FROM THE SURFACE MARK LEAVING ABOUT 18 INCHES OF IT EXPOSED. THE REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTE 11A. THE REFERENCE MARKS HAVE BEEN COVERED WITH DRIFTING SAND AND WERE NOT FOUND. THEY CAN BE RECOVERED ONLY BY REMEASURING THE ANGLES AND DISTANCES AND DIGGING THE SAND AWAY. <p>TO REACH THE STATION FROM PIGEON POINT, GO S 6.7 MILES ON THE COAST ROAD AND TURN RIGHT ON ROAD LEADING TO ANO NUEVO ISLAND LIGHTHOUSE. FOLLOW ROAD TO THE SE END OF THE DUNES. FROM HERE FOLLOW TELEPHONE LINE TO THE POINT, THEN BEAR RIGHT ALONG THE HIGH-WATER LINE 1/4 MILE TO THE STATION. <p> <h2>STATION RECOVERY (1953) </h2> <p>RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1953 STATION IS UNUSABLE DUE TO EROSION OF SAND DUNE, MONUMENT LIES ROUGHLY IN POSITION ON A 45 DEG TILT, ENTIRELY EXPOSED. <p>REFERENCE MARK 1 IS STILL USABLE, BUT SHOULD BE PROTECTED BY SOME TYPE OF BARRIER, AS SAND IS ERODING AWAY AND EXPOSING IT. <p>REFERENCE MARK 2 WAS NOT RECOVERED. IT IS APPARENTLY BURIED. <p>DESCRIPTION IS APPROXIMATELY ADEQUATE, IT COULD BE MORE DETAILED TAKING INTO ACCOUNT THE SPIT OF REEF ROCK NEARBY. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) THE PORTION OF THE SAND RIDGE THE STATION WAS ON HAS ERODED AWAY, AND THE STATION MARK POST AND THE UNDERGROUND MARK WERE FOUND LYING AT THE FOOT OF THE RIDGE. THE MARK HAS BEEN BROKEN OUT OF THE UPPER CONCRETE POST, BUT THE UNDERGROUND MARK WAS STILL SET IN A SMALL BLOCK OF CONCRETE AND IDENTIFIED. <p>REFERENCE MARK 1 WAS FOUND IN GOOD CONDITION, AND IS A STANDARD DISK, STAMPED ANO NO 1 1931, SET IN THE TOP OF A 6- BY 8-IN. CONCRETE POST THAT PROJECTS 4 IN. ABOVE THE GROUND. IT IS ON THE N END OF THE SAND RIDGE THE STATION WAS ON, AND IS 1.3 FT. W OF A 6-FT. WITNESS POST. <p>REFERENCE MARK 2 WAS FOUND IN GOOD CONDITION AND IS A STANDARD DISK, STAMPED ANO NO 2 1931, SET IN THE TOP OF A 6- BY 8-IN. CONCRETE POST THAT PROJECTS 2 IN. ABOVE THE GROUND, AND IS IN A FAIRLY FLAT AREA ABOUT 18 FT. LOWER THAN THE SAND RIDGE THE STATION WAS ON. <p>THE DISK WAS REMOVED FROM THE SMALL CONCRETE BLOCK ON THIS DATE, AND RETURNED TO THE WASHINGTON OFFICE. HT3310 ANO NUEVO ISLAND LIGHTHOUSE http://www.geocaching.com/mark/details.asp?PID=HT3310 ANO NUEVO ISLAND LIGHTHOUSE Geocache Geocache ANO NUEVO ISLAND LIGHTHOUSE CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>ANO NUEVO ISLAND LIGHTHOUSE</h1> <b> PID </b> HT3310 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> POINT ANO NUEVO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 06 29.79487(N) 122 20 12.48829(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 8.66 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -33.65 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 569,109.660 1</td><td>836,747.124</td><td> MT </td><td>0.99999166</td><td> -1 ' 07 28.4"</td></tr><tr><td>SPC CA 3 </td><td>1,867,153.94 6</td><td>026,061.19 </td><td> sFT </td><td>0.99999166</td><td> -1 ' 07 28.4"</td></tr><tr><td>UTM 10 </td><td>4,107,089.684 </td><td>558,925.307</td><td> MT </td><td>0.99964277</td><td> +0 ' 24 00.5"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 06 29.78467(N) 122 20 12.47413(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 06 29.97700(N) 122 20 08.57400(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5892507090(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1932 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1934 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 (CDM) THE CENTER OF THE TOP OF ANO NUEVO ISLAND LIGHTHOUSE, ON ANO NUEVO ISLAND, OFF THE CALIFORNIA COAST. <p> <h2>STATION RECOVERY (1932) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (FLP) RECOVERED AS DESCRIBED. <p> <h2>STATION RECOVERY (1934) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1934 (FHH) THIS IS AN INTERSECTION STATION. THE CENTER OF THE TOP OF THE LIGHTHOUSE WAS USED AS A HYDROGRAPHIC SIGNAL. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) THE STATION WAS RECOVERED IN GOOD CONDITION. IT IS THE CENTER OF THE ANO NUEVO ISLAND LIGHTHOUSE WHICH IS A FOUR-LEGGED, OPEN-FRAMEWORK, STEEL TOWER ABOUT 40 FT. HIGH WITH THE TOP SECTION ENCLOSED BELOW THE GLASS GALLERY. <p>THIS IS AN INTERSECTION STATION. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (LS) THE STATION WAS RECOVERED IN GOOD CONDITION AND THE 1958 DESCRIPTION IS ADEQUATE. HT3376 AOT http://www.geocaching.com/mark/details.asp?PID=HT3376 AOT Geocache Geocache AOT USAF Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>AOT</h1> <b> PID </b> HT3376 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> HALF MOON BAY (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 29 52.82372(N) 122 29 54.64432(W) ADJUSTED <br> <b> NAVD 88 </b> 55. (meters) 180. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 9.02 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -33.00 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 612,646.199 1</td><td>823,300.196</td><td> MT </td><td>0.99993888</td><td> -1 ' 13 24.8"</td></tr><tr><td>SPC CA 3 </td><td>2,009,990.07 5</td><td>981,944.06 </td><td> sFT </td><td>0.99993888</td><td> -1 ' 13 24.8"</td></tr><tr><td>UTM 10 </td><td>4,150,238.279 </td><td>544,327.860</td><td> MT </td><td>0.99962420</td><td> +0 ' 18 19.0"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99999657 x 0.99993888 = 0.99993545 <br> <b>UTM 10 </b> 0.99999657 x 0.99962420 = 0.99962077 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 29 52.81133(N) 122 29 54.63832(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 29 53.02248(N) 122 29 50.71488(W) AD( ) 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG4432850238(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1966 </td><td>MONUMENTED </td><td>USAF</td></tr><tr><td>1971 </td><td>GOOD </td><td>DMA</td></tr><tr><td>1983 </td><td>GOOD </td><td>USCG</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY DEFENSE MAP AGENCY 1971 (JLW) A PAVED DRAINAGE DITCH HAS BEEN CONSTRUCTED ON THE WEST SIDE OF THE MONUMENT. THE TOP (1 FOOT) OF THE MONUMENT IS PHYSICALLY IN THE DITCH. THE MONUMENT IS SOLID IN THE GROUND. <p> <h2>STATION RECOVERY (1983) </h2> <p>RECOVERY NOTE BY US COAST GUARD 1983 (RBM) THE STATION WAS RECOVERED. IT IS LOCATED ABOUT 4 MILES NORTHWEST OF THE TOWN OF HALF MOON BAY, AT THE NORTHWEST END OF HALF MOON BAY, ON PILLAR POINT, ON THE GROUNDS OF THE PILLAR POINT U.S. AIR FORCE STATION, ABOUT 40 YARDS SOUTHEAST OF THE LARGE RADIO TELESCOPE, ON THE WEST SHOULDER OF A BARE GRASSY KNOLL AND AT THE EAST EDGE OF A SMALL, PAVED, DRAINAGE DITCH. THE STATION IS A PLAIN BRASS DISK STAMPED---A.O.T. USAF 1966--- SET IN THE TOP OF 12-INCH DIAMETER CONCRETE MONUMENT AND PROJECTING 4-INCHES. THERE IS A PUNCH MARK IN THE CENTER OF THE DISK. DESCRIBED BY S.A. FEHER HT3689 ARP 1956 http://www.geocaching.com/mark/details.asp?PID=HT3689 ARP 1956 Geocache Geocache ARP 1956 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>ARP 1956</h1> <b> PID </b> HT3689 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 37 06.57817(N) 122 22 38.74333(W) ADJUSTED <br> <b> NAVD 88 </b> 1.7 (meters) 6. (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> X </b> -2,708,724.030 (meters) COMP <br> <b> Y </b> -4,271,985.036 (meters) COMP <br> <b> Z </b> 3,871,970.799 (meters) COMP <br> <b> LAPLACE CORR</b> 0.67 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -30.70 (meters) (11/17/92) GPS OBS <br> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <b> ELLP ORDER </b> FIFTH CLASS I <br> <p>This mark is at San Francisco Intl Airport (SFO) <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by GPS observations and a high-resolution geoid model. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 625,793.610 1</td><td>834,272.638</td><td> MT </td><td>0.99993184</td><td> -1 ' 08 57.9"</td></tr><tr><td>SPC CA 3 </td><td>2,053,124.54 6</td><td>017,942.81 </td><td> sFT </td><td>0.99993184</td><td> -1 ' 08 57.9"</td></tr><tr><td>UTM 10 </td><td>4,163,669.713 </td><td>554,942.326</td><td> MT </td><td>0.99963718</td><td> +0 ' 22 48.1"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000482 x 0.99993184 = 0.99993666 <br> <b>UTM 10 </b> 1.00000482 x 0.99963718 = 0.99964200 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 37 37 06.57826(N) 122 22 38.74336(W) AD(1991.35) 1 <br> <b> NAD 83(1986)</b> 37 37 06.57599(N) 122 22 38.73949(W) AD(1984.00) 3 <br> NGVD 29 (10/13/92) 0.9 (m) 3. (f) GPS OBS <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5494263670(NAD 83) <br>MARKER: DT = TOPOGRAPHIC STATION DISK <br>SETTING: 0 = UNSPECIFIED SETTING <br>SP_SET: DEEP CONCRETE CATCH BASIN <br>STAMPING: ARP 1956 <br>MARK LOGO: CGS <br>MAGNETIC: O = OTHER; SEE DESCRIPTION <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - June 18, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1956 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19920615</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920618</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 THIS STATION IS LOCATED IN THE GEOMETRIC CENTER OF THE SAN FRANCISCO INTL AIRPORT, IN A GRASS AREA FORMED BY RUNWAYS 1L AND 10R AND THREE TAXIWAYS. IT IS 555.50 FT (169.32 M) WEST OF THE INTERSECTION OF RUNWAYS 1L AND 10R, 222.40 FT (67.79 M) EAST OF THE CONCRETE BASE OF THE WIND-T, THE T HAS BEEN REMOVED. A STANDARD TOPOGRAPHIC DISK CEMENTED IN A DRILL HOLE IN THE NORTHWEST CORNER OF A CONCRETE CATCH BASIN, WITH A STEEL MESH COVER AND FLUSH WITH THE GROUND, IT IS STAMPED ARP 1956. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 CALL AT LEAST A WEEK IN ADVANCE TO MAKE ARRANGEMENTS TO BE ESCORTED TO STATION. NEW FAA SECURITY REQUIREMENTS MAY SPECIFY BADGES, TRUCK TAG NUMBERS, PERSONNEL NAME AND IDENTIFICATION. EAR PROTECTION IS SUGGESTED. STATION IS LOCATED AT THE SAN FRANCISCO INTERNATIONAL AIRPORT, ABOUT 0.55 KM (0.34 MI) NORTHEAST OF THE CONTROL TOWER, IN A LARGE GRASS AREA AT A WINDSOCK, IN THE SOUTH ANGLE OF THE JUNCTION OF RUNWAYS 19R-1L AND 10R-28L, ON THE EAST SIDE OF J TAXI. OWNERSHIP--CITY AND COUNTY OF SAN FRANCISCO, SAN FRANCISCO AIRPORT COMMISSION, SAN FRANCISCO, CA 94102. CONTACT GLEN BROTMAN, AIRFIELD OPERATIONS, PHONE 415-876-2223 FOR ACCESS. CHIEF AIRPORT SURVEYOR RAYMOND MASON, PHONE 415-737-7765, IS FAMILIAR WITH THE STATION SITE. STATION MARK IS SET IN A DRILL HOLE IN THE SOUTHWEST CORNER OF A 1.5 M (4.9 FT) SQUARE CONCRETE CATCH BASIN. IT IS 67.6 M (221.8 FT) NORTHEAST FROM THE WINDSOCK, 36.1 M (118.4 FT) EAST FROM THE SOUTHEAST POST OF THE ILLUMINATED 10R-28L SIGN, 3.55 M (11.65 FT) SOUTH FROM THE SOUTH EDGE OF A MACADAM LANE AND 15.2 M (49.9 FT) WEST FROM THE WEST EDGE OF A MACADAM LANE. HT3461 AUX http://www.geocaching.com/mark/details.asp?PID=HT3461 AUX Geocache Geocache AUX CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>AUX</h1> <b> PID </b> HT3461 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 30 33.07249(N) 122 30 13.97998(W) ADJUSTED <br> <b> NAVD 88 </b> 27. (meters) 89. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 9.41 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.99 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 613,896.853 1</td><td>822,851.952</td><td> MT </td><td>0.99993804</td><td> -1 ' 13 36.6"</td></tr><tr><td>SPC CA 3 </td><td>2,014,093.26 5</td><td>980,473.45 </td><td> sFT </td><td>0.99993804</td><td> -1 ' 13 36.6"</td></tr><tr><td>UTM 10 </td><td>4,151,476.138 </td><td>543,846.559</td><td> MT </td><td>0.99962368</td><td> +0 ' 18 07.5"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000096 x 0.99993804 = 0.99993900 <br> <b>UTM 10 </b> 1.00000096 x 0.99962368 = 0.99962464 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> PILLAR POINT 2 </td><td>160&deg; 22' 48.4"</td></tr><tr><td>UTM 10 </td><td> PILLAR POINT 2 </td><td>158&deg; 51' 04.3"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2790</td><td>AUX RM </td><td> 18.625 METERS</td><td>117&deg; 05' </td></tr><tr><td>HT1435</td><td>PILLAR POINT 2 </td><td>APPROX. 1.3 KM</td><td>159&deg; 09' 11.8"</td></tr><tr><td>HT3466</td><td>PILLAR POINT TANK </td><td>APPROX. 1.1 KM</td><td>325&deg; 47' 27.3"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 30 33.06042(N) 122 30 13.97314(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 30 33.25900(N) 122 30 10.05800(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG4384751476(NAD 83) <br>MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION <br>SETTING: 4 = OBJECT SURROUNDED BY MASS OF CONCRETE <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1921 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1929 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1921 (FGE) ON THE FIRST PROMINENCE N OF PILLAR POINT. THE STATION IS ON THE HIGHEST PART. <p>STATION MARK AND REFERENCE MARK ARE STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1C AND 11C. <p>THIS AREA IS CULTIVATED. TO PREVENT PLOWING UP OF THE MARK, A 2 1/2-INCH GALVANIZED-IRON PIPE 5 FEET LONG WAS DRIVEN ABOUT 3-1/2 FEET INTO THE GROUND AT A DISTANCE OF ABOUT 1-1/2 FEET FROM STATION. <p>THE STATION IS EASILY REACHED. <p> <h2>STATION RECOVERY (1929) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (OWS) A RESERVOIR HAS BEEN BUILT OVER OLD STATION AND MARK DESTROYED. <p>STATION WHALE WAS ESTABLISHED ON THE SITE. HT1531 B 1239 http://www.geocaching.com/mark/details.asp?PID=HT1531 B 1239 Geocache Geocache B 1239 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 1239</h1> <b> PID </b> HT1531 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PIGEON POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 10 57. (N) 122 22 43. (W) SCALED <br> <b> NAVD 88 </b> 24.026 (meters) 78.83 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.35 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 24.009 (meters) 78.77 (feet) COMP <br> <b> MODELED GRAV</b> 979,943.9 (mgal) NAVD 88 <br> <b> OBS GRAVITY </b> 979,949.4 (mgal) GRAV_OBS <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. The observed gravity was obtained from relative gravimeter ties to the IGSN71 gravity network. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 577,420. </td><td> 1,833,200. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 23.223 (m) 76.19 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG551152(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: B 1239 1972 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 15.8 MI NW FROM DAVENPORT. 15.85 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, AT THE JUNCTION OF PIGEON POINT ROAD, 32 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, 110 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, IN THE TOP OF THE SOUTHEAST END OF THE NORTHEAST CONCRETE HEAD WALL OF 36-INCH CONCRETE PIPE CULVERT 07/31, 0.6 FOOT NORTHWEST OF THE SOUTHEAST END OF THE HEAD WALL, AND ABOUT 1/2 FOOT LOWER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT1505 B 1240 http://www.geocaching.com/mark/details.asp?PID=HT1505 B 1240 Geocache Geocache B 1240 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 1240</h1> <b> PID </b> HT1505 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN GREGORIO (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 15 14. (N) 122 24 22. (W) SCALED <br> <b> NAVD 88 </b> 4.456 (meters) 14.62 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.19 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.453 (meters) 14.61 (feet) COMP <br> <b> MODELED GRAV</b> 979,956.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 585,390. </td><td> 1,830,920. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 3.641 (m) 11.95 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG526232(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: B 1240 1972 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 22.7 MI NW FROM DAVENPORT. 22.1 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, THENCE 0.6 MILE SOUTHEAST ALONG PESCADERO ROAD, 0.2 MILE SOUTHEAST OF THE JUNCTION OF THE ENTRANCE ROAD TO THE COUNTY ROAD MAINTENANCE YARD AND BUILDINGS, 0.05 MILE SOUTHEAST OF THE CROSSING OF A POWER LINE, AT THE NORTHWEST END OF A LARGE PULLOUT, IN THE TOP AND 0.8 FOOT NORTHWEST OF THE SOUTHEAST END OF THE SOUTHWEST CONCRETE HEAD WALL OF 18-INCH CULVERT 0.66, 59 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 66 FEET SOUTHWEST AND ACROSS THE ROAD FROM TELEPHONE POLE 11, AND ABOUT 1/2 FOOT LOWER THAN THE ROAD. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT0464 B 1241 http://www.geocaching.com/mark/details.asp?PID=HT0464 B 1241 Geocache Geocache B 1241 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 1241</h1> <b> PID </b> HT0464 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 37 13. (N) 122 29 05. (W) SCALED <br> <b> NAVD 88 </b> 19.788 (meters) 64.92 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -32.74 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 19.775 (meters) 64.88 (feet) COMP <br> <b> MODELED GRAV</b> 979,972.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 626,190. </td><td> 1,824,810. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.950 (m) 62.17 (f) ADJ UNCH 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG454638(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CATCH BASIN <br>STAMPING: B 1241 1972 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20001022</td><td>GOOD </td><td>INDIV</td></tr><tr><td>20030722</td><td>POOR </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 AT PACIFICA. AT THE SOUTHEAST CORNER OF THE JUNCTION OF STATE HIGHWAY 1 AND WESTPORT DRIVE AT PACIFICA, ALSO 0.8 MILE NORTH ALONG STATE HIGHWAY 1 FROM BENCH MARK A 1241, 49 FEET EAST OF THE CENTER LINE OF THE NORTH BOUND HIGHWAY LANES, IN THE TOP AND AT THE NORTHEAST CORNER OF A 4- BY 8-FOOT CONCRETE CATCH BASIN 43/01 COVERED WITH DIAMOND PLATE STEEL, 70 FEET SOUTH OF THE CENTER LINE OF THE DRIVE, 0.5 FOOT SOUTHWEST OF THE NORTHEAST CORNER OF A STRUCTURE, AND ABOUT 2 FEET LOWER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (2000) </h2> <p>RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2000 (WKW) IMAGES AT WWW.CROCUTA.COM/NGS/HT0464.HTML <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY GEOCACHING 2003 (BGT) DISK HAS SUSTAINED SOME SLIGHT DAMAGE AND IS SOMEWHAT LOOSE IN THE GROUND. HT1517 B 1242 http://www.geocaching.com/mark/details.asp?PID=HT1517 B 1242 Geocache Geocache B 1242 NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 1242</h1> <b> PID </b> HT1517 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PIGEON POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 13 06. (N) 122 24 22. (W) SCALED <br> <b> NAVD 88 </b> 16.090 (meters) 52.79 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.31 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 16.079 (meters) 52.75 (feet) COMP <br> <b> MODELED GRAV</b> 979,949.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 581,440. </td><td> 1,830,840. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 15.291 (m) 50.17 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG526192(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: B 1242 1972 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 19.1 MI NW FROM DAVENPORT. 19.1 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DAVENPORT, 0.25 MILE SOUTH OF THE JUNCTION OF BEAN HOLLOW ROAD, 57 1/2 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 77 FEET SOUTHEAST OF THE SOUTH END OF THE EAST HEAD WALL OF 36-INCH CULVERT 10/59, 1 1/2 FEET NORTH OF POWER POLE 272, 21.3 FEET WEST OF A FENCE, 2.0 FEET SOUTH OF A WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, A DISK ON THE TOP OF A 5/8-INCH COPPER COATED ROD DRIVEN TO SUDDEN REFUSAL AT A DEPTH OF 5 FEET. THE UPPER PORTION OF THE ROD IS ENCASED IN A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT1346 B 151 http://www.geocaching.com/mark/details.asp?PID=HT1346 B 151 Geocache Geocache B 151 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 151</h1> <b> PID </b> HT1346 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 25 27. (N) 122 11 06. (W) SCALED <br> <b> NAVD 88 </b> 44.94 (+/-2cm) 147.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 603,910. </td><td> 1,850,870. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 44.094 (m) 144.67 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG721422(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: STATUE GRANITE BASE <br>STAMPING: B 151 1933 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 AT STANFORD UNIVERSITY. ON THE STANFORD UNIVERSITY CAMPUS, AT STANFORD STABLES, AT THE STATUE OF HORSE SHERWOOD COMMEMORATING THE OLD STANFORD STOCK FARM, 145.5 FEET EAST OF AND ACROSS THE ROAD FROM THE SOUTHEAST CORNER OF A LONG BRICK BUILDING, SET VERTICALLY IN THE NORTH END OF THE GRANITE BASE OF THE STATUE, 82 1/2 FEET EAST OF THE CENTER LINE OF THE ROAD, AND 1.1 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1988 (PS) RECOVERED IN GOOD CONDITION. HT1385 B 152 http://www.geocaching.com/mark/details.asp?PID=HT1385 B 152 Geocache Geocache B 152 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 152</h1> <b> PID </b> HT1385 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 23 50. (N) 122 15 27. (W) SCALED <br> <b> NAVD 88 </b> 311.57 (+/-2cm) 1022.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.45 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 601,040. </td><td> 1,844,400. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 310.695 (m) 1019.34 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG657391(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: B 152 1933 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 3.8 MI S FROM WOODSIDE. 3.8 MILES SOUTH ALONG LA HONDA ROAD FROM WOODSIDE SCHOOL AT WOODSIDE, 78.9 FEET SOUTHEAST OF THE CENTER OF THE SOUTHWEST END OF AN 18-INCH CORRUGATED METAL PIPE CULVERT WITH AN L-SHAPED HEAD WALL, 38.6 FEET SOUTHWEST OF AND ACROSS THE ROAD FROM THE SOUTHEAST END OF A CONCRETE RETAINING WALL, 26.5 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 9 FEET SOUTH OF AN 18-INCH OAK TREE, 5 1/2 FEET NORTHEAST OF A 12-INCH OAK TREE, 5.8 FEET NORTHEAST OF A FENCE, 1.6 FEET SOUTHEAST OF A WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT0471 B 211 http://www.geocaching.com/mark/details.asp?PID=HT0471 B 211 Geocache Geocache B 211 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 211</h1> <b> PID </b> HT0471 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 39 11. (N) 122 29 22. (W) SCALED <br> <b> NAVD 88 </b> 39.97 (+/-2cm) 131.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.76 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 629,830. </td><td> 1,824,470. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 39.129 (m) 128.38 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG450674(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 1.4 MI N FROM SALADA BEACH. AT POINT WHERE OLD ABANDONED R.R.R.O.W. OF SALADA BEACH P.O. BY STATE HWY. 1, CROSSES PRESENT STATE HWY 1. 27 FEET EAST OF CENTERLINE OF STATE HWY. 1. 39 FEET SOUTH OF CENTERLINE OF COUNTY ROAD. 88 FEET WEST OF SMALL FARMHOUSE. HT1526 B 212 RESET 1956 http://www.geocaching.com/mark/details.asp?PID=HT1526 B 212 RESET 1956 Geocache Geocache B 212 RESET 1956 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 212 RESET 1956</h1> <b> PID </b> HT1526 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PIGEON POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 11 58. (N) 122 24 04. (W) SCALED <br> <b> NAVD 88 </b> 22.386 (meters) 73.44 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -33.37 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 22.371 (meters) 73.40 (feet) COMP <br> <b> MODELED GRAV</b> 979,947.1 (mgal) NAVD 88 <br> <b> OBS GRAVITY </b> 979,951.3 (mgal) GRAV_OBS <br> <p> <b> VERT ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. The observed gravity was obtained from relative gravimeter ties to the IGSN71 gravity network. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 579,340. </td><td> 1,831,240. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (10/21/93) 21.588 (m) 70.83 (f) ADJUSTED 1 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG531171(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: B 212 1935 REST 1956 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1956 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1972 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1978 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 17.7 MI NW FROM DEVENPORT. 17.7 MILES NORTHWEST ALONG STATE HIGHWAY 1 FROM THE POST OFFICE AT DEVENPORT, 0.05 MILE SOUTH OF HIGHWAY MILEAGE MARKER 09/23, AT THE INTERSECTION OF AN ASPHALT ROAD WEST AND A GRAVELED ROAD EAST, 48 FEET WEST OF THE CENTER LINE OF THE WEST LANES OF THE HIGHWAY, 34 FEET NORTH OF THE CENTER LINE OF A DRIVEWAY WEST, 29 FEET NORTHEAST OF A POWER POLE WITH LADDER PEGS, 69 FEET EAST-NORTHEAST OF THE NORTH END OF A STEEL GATE, 1.5 FEET SOUTH OF A WITNESS POST, ABOUT 6 FEET LOWER THAN THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1978) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION. HT0587 B 25 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0587 B 25 CAHD Geocache Geocache B 25 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 25 CAHD</h1> <b> PID </b> HT0587 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 26. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 4.48 (+/-2cm) 14.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,650. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 3.666 (m) 12.03 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 25, 0.4 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1986 (RJS) MARK NOT FOUND. HT0588 B 33 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0588 B 33 CAHD Geocache Geocache B 33 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 33 CAHD</h1> <b> PID </b> HT0588 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 26. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 5.09 (+/-2cm) 16.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,650. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.273 (m) 14.02 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 33, 0.5 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST GUARDRAIL, AND ABOUT LEVEL WITH THE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. HT0589 B 34 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0589 B 34 CAHD Geocache Geocache B 34 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 34 CAHD</h1> <b> PID </b> HT0589 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 25. (N) 122 15 43. (W) SCALED <br> <b> NAVD 88 </b> 5.09 (+/-2cm) 16.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,620. </td><td> 1,844,370. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.268 (m) 14.00 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 34, 0.4 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. HT0590 B 35 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0590 B 35 CAHD Geocache Geocache B 35 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 35 CAHD</h1> <b> PID </b> HT0590 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 25. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 5.09 (+/-2cm) 16.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,620. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.270 (m) 14.01 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 35, 0.5 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE CONCRETE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1986 (RJS) MARK NOT FOUND. HT0591 B 37 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0591 B 37 CAHD Geocache Geocache B 37 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 37 CAHD</h1> <b> PID </b> HT0591 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 25. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 4.97 (+/-2cm) 16.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,620. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.148 (m) 13.61 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 37, 0.5 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE CONCRETE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1986 (RJS) MARK NOT FOUND. HT1379 B 386 http://www.geocaching.com/mark/details.asp?PID=HT1379 B 386 Geocache Geocache B 386 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 386</h1> <b> PID </b> HT1379 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 24 17. (N) 122 14 58. (W) SCALED <br> <b> NAVD 88 </b> 110.82 (+/-2cm) 363.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.46 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 601,850. </td><td> 1,845,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 109.944 (m) 360.71 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG664400(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: B 386 1936 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1936 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 2.1 MI NW FROM PORTOLA. 2.1 MILES NORTHWEST ALONG PORTOLA ROAD FROM PORTOLA SCHOOL, ABOUT 125 YARDS WEST OF THE Y JUNCTION OF MOUNTAIN HOME ROAD, AT A CONCRETE ARCH CULVERT, IN THE TOP OF A CYLINDRICAL CONCRETE POST AT THE WEST END OF THE NORTH GUARDRAIL, 11.4 FEET NORTH OF THE CENTER LINE OF THE ROAD, AND 4 1/2 FEET HIGHER THAN THE ROAD. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT1581 B 387 http://www.geocaching.com/mark/details.asp?PID=HT1581 B 387 Geocache Geocache B 387 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 387</h1> <b> PID </b> HT1581 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 26 56. (N) 122 20 13. (W) SCALED <br> <b> NAVD 88 </b> 625.25 (+/-2cm) 2051.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.49 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 606,900. </td><td> 1,837,480. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 624.357 (m) 2048.41 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG586448(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>SP_SET: BOULDER <br>STAMPING: B 387 1936 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 06, 2003 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1936 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20030706</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 12.2 MI S FROM SAN MATEO. ABOUT 0.7 MILE SOUTHWEST ALONG THIRD AVENUE FROM THE SOUTHERN PACIFIC STATION AT SAN MATEO, THENCE 3.2 MILES SOUTHWEST ALONG CRYSTAL SPRINGS ROAD, THENCE 8.3 MILES SOUTH ALONG SKYLINE BOULEVARD, IN THE TOP OF THE WEST SIDE OF A 4 X 5-FOOT BOULDER THAT PROJECTS 2 1/2 FEET, 40 1/2 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 98 FEET NORTHEAST OF THE CENTER OF THE JUNCTION 9.9 FEET SOUTH OF A FENCE, 2.0 FEET EAST OF A WITNESS POST, AND ABOUT 3 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY GEOCACHING 2003 (CSM) RECOVERED IN GOOD CONDITION. HT1586 B 388 http://www.geocaching.com/mark/details.asp?PID=HT1586 B 388 Geocache Geocache B 388 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 388</h1> <b> PID </b> HT1586 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 24 39. (N) 122 18 21. (W) SCALED <br> <b> NAVD 88 </b> 706.63 (+/-2cm) 2318.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.46 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 602,630. </td><td> 1,840,150. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 705.738 (m) 2315.41 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG614406(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: MONUMENT <br>STAMPING: B 388 1937 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1937 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20030706</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 3 MI SW FROM WOODSIDE. FROM THE JUNCTION OF U.S. HIGHWAY 101 AND STATE HIGHWAY 92 IN SAN MATEO, FOLLOW STATE HIGHWAY 92 WESTERLY FOR 7.6 MILES, THENCE LEFT, SOUTH, ALONG STATE HIGHWAY 35 FOR 8.6 MILES TO THE MARK ON THE LEFT SIDE OF THE HIGHWAY AT A ROAD SIDE PARKING AREA. THE BENCH MARK IS A STANDARD DISK, CEMENTED IN A DRILL HOLE IN CONCRETE AT THE BASE OF A GRANITE MONUMENT WITH A SUNDIAL IN THE TOP. IT IS 9 INCHES SOUTHWEST OF THE BASE OF THE MONUMENT. <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY GEOCACHING 2003 (CSM) RECOVERED IN GOOD CONDITION. HT0592 B 39 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0592 B 39 CAHD Geocache Geocache B 39 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 39 CAHD</h1> <b> PID </b> HT0592 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 25. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 4.97 (+/-2cm) 16.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,620. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.152 (m) 13.62 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 39, 0.5 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE CONCRETE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. HT0593 B 41 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0593 B 41 CAHD Geocache Geocache B 41 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 41 CAHD</h1> <b> PID </b> HT0593 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 26. (N) 122 15 44. (W) SCALED <br> <b> NAVD 88 </b> 5.00 (+/-2cm) 16.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 620,650. </td><td> 1,844,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.178 (m) 13.71 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG651587(NAD 83) <br>MARKER: X = CHISELED CROSS <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT SAN MATEO BRIDGE. AT SAN MATEO BRIDGE, ON TOP OF THE SOUTHEAST END OF BENT NO. 41, 0.5 FOOT NORTHWEST OF THE NORTHWEST FACE OF THE SOUTHEAST CONCRETE GUARDRAIL, AND ABOUT LEVEL WITH THE FLOOR OF THE FLOOR OF THE BRIDGE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION. HT1291 B 554 http://www.geocaching.com/mark/details.asp?PID=HT1291 B 554 Geocache Geocache B 554 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 554</h1> <b> PID </b> HT1291 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 28 10. (N) 122 09 19. (W) SCALED <br> <b> NAVD 88 </b> 8.02 (+/-2cm) 26.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.53 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 608,880. </td><td> 1,853,590. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 7.193 (m) 23.60 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG746472(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: ABUTMENT <br>STAMPING: B 554 1956 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1956 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1977 </td><td>GOOD </td><td>CADT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 1 MI NW FROM PALO ALTO. 0.95 MILE NORTHWEST ALONG THE BAYSHORE FREEWAY FROM THE UNIVERSITY AVENUE OVERPASS AT PALO ALTO, AT WILLOW ROAD OVERPASS, SET VERTICALLY IN THE NORTHWEST FACE OF THE NORTHEAST CONCRETE ABUTMENT OF THE OVERPASS, 10 FEET NORTHEAST OF THE NORTHEAST EDGE OF THE NORTHEAST LANES OF THE FREEWAY, 2.3 FEET NORTHEAST OF THE WEST CORNER OF THE ABUTMENT, ABOUT 3 FEET HIGHER THAN THE FREEWAY, AND 3.0 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1977) </h2> <p>RECOVERY NOTE BY CALTRANS 1977 RECOVERED IN GOOD CONDITION. HT0557 B 814 http://www.geocaching.com/mark/details.asp?PID=HT0557 B 814 Geocache Geocache B 814 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 814</h1> <b> PID </b> HT0557 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 34 48. (N) 122 20 42. (W) SCALED <br> <b> NAVD 88 </b> 10.10 (+/-2cm) 33.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 621,470. </td><td> 1,837,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 9.266 (m) 30.40 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG578594(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES <br>SP_SET: RAILROAD DEPOT FOUNDATION <br>STAMPING: B 814 1952 <br>MARK LOGO: CGS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1952 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1986 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT BURLINGAME. AT BURLINGAME, SET VERTICALLY IN THE NORTHEAST FACE OF THE CONCRETE FOUNDATION OF THE SOUTHERN PACIFIC COMPANY RAILROAD STATION, 47.6 FEET SOUTHWEST OF THE SOUTHWEST RAIL, 2.1 FEET NORTHWEST OF THE EAST CORNER OF THE BUILDING, AND 0.3 FOOT ABOVE THE SIDEWALK. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1986) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION. HT1691 B 876 http://www.geocaching.com/mark/details.asp?PID=HT1691 B 876 Geocache Geocache B 876 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>B 876</h1> <b> PID </b> HT1691 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 27 40. (N) 122 13 35. (W) SCALED <br> <b> NAVD 88 </b> 15.96 (+/-2cm) 52.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.51 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 608,070. </td><td> 1,847,280. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 15.116 (m) 49.59 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG684463(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: B 876 1954 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1954 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1976 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1954 AT REDWOOD CITY. AT REDWOOD CITY, ALONG WOODSIDE ROAD, AT ST. PIUS SCHOOL AND CHURCH, IN THE WEST CORNER OF A DIAMOND-SHAPED CONCRETE-CURBED FLOWER BED, 107 YARDS WEST OF THE CENTER LINE OF WOODSIDE ROAD, 111.9 FEET SOUTHWEST OF THE SOUTH CORNER OF THE SCHOOL BUILDING, 62.6 FEET SOUTHEAST OF THE EAST CORNER OF THE CHURCH BUILDING, ABOUT LEVEL WITH THE TOP OF THE CONCRETE CURB, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.3 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1976) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 AT REDWOOD CITY ALONG WOODSIDE ROAD AT ST PIUS SCHOOL AND CHURCH IN THE WEST CORNER OF A DIAMOND SHAPED CONCRETE CURBED FLOWER BED 107 YARDS WEST OF THE CENTER LINE OF WOODSIDE ROAD 111.9 FEET SOUTHWEST OF THE SOUTH CORNER OF THE SCHOOL BUILDING 62.6 FEET SOUTHEAST OF THE SOUTHEAST OF THE EAST CORNER OF THE CHURCH BUILDING. HT1450 BAC http://www.geocaching.com/mark/details.asp?PID=HT1450 BAC Geocache Geocache BAC CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAC</h1> <b> PID </b> HT1450 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> HALF MOON BAY (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 26 40.69554(N) 122 24 50.76039(W) ADJUSTED <br> <b> NAVD 88 </b> 163.27 (+/-2cm) 535.7 (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 7.90 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.80 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 606,568.541 1</td><td>830,641.361</td><td> MT </td><td>0.99994340</td><td> -1 ' 10 18.7"</td></tr><tr><td>SPC CA 3 </td><td>1,990,050.29 6</td><td>006,029.20 </td><td> sFT </td><td>0.99994340</td><td> -1 ' 10 18.7"</td></tr><tr><td>UTM 10 </td><td>4,144,360.437 </td><td>551,826.183</td><td> MT </td><td>0.99963308</td><td> +0 ' 21 22.4"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99997953 x 0.99994340 = 0.99992293 <br> <b>UTM 10 </b> 0.99997953 x 0.99963308 = 0.99961261 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> MAD 2 </td><td>010&deg; 01' 46.9"</td></tr><tr><td>UTM 10 </td><td> MAD 2 </td><td>008&deg; 30' 05.8"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>HT3354</td><td>MAD 2 </td><td>APPROX. 2.8 KM</td><td>008&deg; 51' 28.2"</td></tr><tr><td>HT1451</td><td>BAC RM 1 </td><td> 92.449 METERS</td><td>070&deg; 17' </td></tr><tr><td>HT1452</td><td>BAC RM 2 </td><td> 60.988 METERS</td><td>104&deg; 00' </td></tr><tr><td>HT3372</td><td>PURISIMA WATER TANK </td><td>APPROX. 4.5 KM</td><td>191&deg; 07' 28.9"</td></tr><tr><td>HT3358</td><td>WESTERLY OIL DERRICK </td><td>APPROX. 3.2 KM</td><td>195&deg; 06' 36.0"</td></tr><tr><td>HT3365</td><td>RADIO BALL ON HSE S STA MOON 2 </td><td>APPROX. 2.6 KM</td><td>238&deg; 32' 21.1"</td></tr><tr><td>HT3367</td><td>GATEPOST ON CLIFF S STA MOON 2 </td><td>APPROX. 2.8 KM</td><td>243&deg; 15' 00.1"</td></tr><tr><td>HT3366</td><td>HOUSE CHIM S OF MOONDREAM CAFE </td><td>APPROX. 3.0 KM</td><td>299&deg; 36' 47.8"</td></tr><tr><td>HT3351</td><td>SAIL ROCK </td><td>APPROX. 9.3 KM</td><td>305&deg; 05' 50.5"</td></tr><tr><td>HT3364</td><td>SAND BUNKERS BOX ON POLE </td><td>APPROX. 4.6 KM</td><td>319&deg; 04' 41.0"</td></tr><tr><td>HT3363</td><td>MIRAMER DOCK BANNER </td><td>APPROX. 6.6 KM</td><td>321&deg; 10' 33.2"</td></tr><tr><td>HT3360</td><td>HALF MOON BAY HIGH SCHOOL FP </td><td>APPROX. 2.7 KM</td><td>322&deg; 56' 07.7"</td></tr><tr><td>HT3370</td><td>HALF MOON BAY CATH CH CROSS </td><td>APPROX. 2.7 KM</td><td>326&deg; 03' 56.7"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 26 40.68523(N) 122 24 50.75244(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 26 40.89600(N) 122 24 46.84600(W) AD( ) 3 <br> NGVD 29 (??/??/92) 162.405 (m) 532.82 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5182644360(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: BAC 1931 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1931 </td><td>GOOD </td><td>CGS</td></tr><tr><td>1932 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 (CDM) ON THE TOP OF A 600-FOOT ROUND-TOPPED CULTIVATED HILL, ABOUT 1-1/4 MILES SW OF HALFMOON BAY AND 0.9 MILE E OF THE COAST ROAD WHICH CONNECTS HALFMOON BAY AND SANTA CRUZ. FROM THE STATION THE FARALLONES SHOW CLEAR OF PILLAR POINT ABOUT 1/4 MILE. <p>UNDERGROUND AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 7A AND 11A. THE REFERENCE MARKS WERE NUMBERED AND SET IN THE FENCE LINE. ALL MARKS WERE STAMPED WITH THE NAME OF THE STATION AND THE YEAR. <p>TO REACH THE STATION FROM THE JUNCTION OF THE COAST ROAD AND SAN MATEO ROAD N OF HALFMOON BAY, FOLLOW THE COAST ROAD S FOR 1.1 MILES, THEN TURN LEFT TO A RANCH HOUSE 0.6 MILE FROM THE COAST ROAD, THEN WALK TO THE TOP OF THE HIGHEST HILL ABOUT 1/4 MILE SE OF THE RANCH HOUSE. <p> <h2>STATION RECOVERY (1931) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 2.1 MI SE FROM HALF MOON BAY. 2.1 MILES SOUTHEAST ALONG STATE HIGHWAY 1 FROM THE JUNCTION OF THE ROAD LEADING EAST TO SAN MATEO AT HALF MOON BAY, SAN MATEO COUNTY, THENCE 0.3 MILE EAST ALONG HIGGINS ROAD, THENCE 0.1 MILE SOUTH ALONG A FARM ROAD AND THENCE 0.6 MILE SOUTHEAST ALONG A FARM ROAD TO THE TOP OF A ROUND-TOPPED CULTIVATED HILL, ABOUT 200 FEET WEST OF THE NORTH-AND-SOUTH FENCE LINE, AND 1.4 FEET UNDERGROUND. A STANDARD TRIANGULATION-STATION DISK, STAMPED BAC 1931 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1932) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (FLP) STATION RECOVERED AS DESCRIBED. IT IS POSSIBLE TO DRIVE CLOSER TO THE STATION BY PROCEEDING AS FOLLOWS--FROM THE JUNCTION OF THE COAST ROAD AND THE SAN MATEO ROAD N OF HALFMOON BAY, PROCEED S 1.1 MILES, TURN LEFT, PROCEED TO ROAD TURNING INTO FIRST FARMHOUSE ON RIGHT, TURN RIGHT ON THIS ROAD, THEN LEFT THROUGH FARMYARD AND FOLLOW FARM ROAD THROUGH FIELD TO TOP OF HILL. THE STATION IS ON THE NEXT HILL TO THE S. THERE IS A SADDLE BETWEEN THE TWO HILLS. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) THE STATION MARK AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION, AND THE 1931 AND 1932 DESCRIPTIONS ARE ADEQUATE EXCEPT THE STATION MARK IS NOW ABOUT 15 IN. BELOW THE SURFACE OF THE GROUND. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1958 RECOVERED IN GOOD CONDITION. HT1451 BAC RM 1 http://www.geocaching.com/mark/details.asp?PID=HT1451 BAC RM 1 Geocache Geocache BAC RM 1 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAC RM 1</h1> <b> PID </b> HT1451 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> HALF MOON BAY (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 26 42. (N) 122 24 49. (W) SCALED <br> <b> NAVD 88 </b> 164.09 (+/-2cm) 538.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.80 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 606,610. </td><td> 1,830,690. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 163.228 (m) 535.52 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG518444(NAD 83) <br>MARKER: DR = REFERENCE MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: BAC 1 1931 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 2.1 MI SE FROM HALF MOON BAY. 303 FEET NORTHEAST OF TRAINGULATION STATION BAC DESCRIBED ABOVE, AND AT THE NORTH-AND-SOUTH FENCE LINE. A STANDARD REFERENCE-MARK DISK, STAMPED BAC 1931 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1958 RECOVERED IN GOOD CONDITION. HT1452 BAC RM 2 http://www.geocaching.com/mark/details.asp?PID=HT1452 BAC RM 2 Geocache Geocache BAC RM 2 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAC RM 2</h1> <b> PID </b> HT1452 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> HALF MOON BAY (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 26 40. (N) 122 24 48. (W) SCALED <br> <b> NAVD 88 </b> 160.79 (+/-2cm) 527.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.80 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 606,550. </td><td> 1,830,710. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 159.927 (m) 524.69 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG518443(NAD 83) <br>MARKER: DR = REFERENCE MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: BAC 2 1931 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 2.1 MI SE FROM HALF MOON BAY. 200 FEET EAST OF TRIANGULATION STATION BAC DESCRIBED ABOVE, AND AT THE NORTH-AND-SOUTH FENCE LINE. A STANDARD REFERENCE-MARK DISK, STAMPED BAC 2 1931 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1958 RECOVERED IN GOOD CONDITION. HT3324 BALD KNOB http://www.geocaching.com/mark/details.asp?PID=HT3324 BALD KNOB Geocache Geocache BALD KNOB CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BALD KNOB</h1> <b> PID </b> HT3324 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> WOODSIDE (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 25 24.32819(N) 122 21 15.11078(W) ADJUSTED <br> <b> NAVD 88 </b> 642. (meters) 2106. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 7.91 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.58 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 604,108.067 1</td><td>835,894.174</td><td> MT </td><td>0.99994544</td><td> -1 ' 08 06.7"</td></tr><tr><td>SPC CA 3 </td><td>1,981,977.88 6</td><td>023,262.80 </td><td> sFT </td><td>0.99994544</td><td> -1 ' 08 06.7"</td></tr><tr><td>UTM 10 </td><td>4,142,041.611 </td><td>557,141.097</td><td> MT </td><td>0.99964022</td><td> +0 ' 23 32.9"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99990439 x 0.99994544 = 0.99984984 <br> <b>UTM 10 </b> 0.99990439 x 0.99964022 = 0.99954465 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> MAD 2 </td><td>317&deg; 16' 49.3"</td></tr><tr><td>UTM 10 </td><td> MAD 2 </td><td>315&deg; 45' 09.7"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2801</td><td>BALD KNOB RM </td><td> 57.180 METERS</td><td>113&deg; 41' </td></tr><tr><td>DB2800</td><td>BALD KNOB WM PIPE </td><td> 23.622 METERS</td><td>244&deg; 02' </td></tr><tr><td>HT3353</td><td>MIDDLE OIL DERRICK </td><td>APPROX. 5.5 KM</td><td>247&deg; 11' 56.7"</td></tr><tr><td>HT3365</td><td>RADIO BALL ON HSE S STA MOON 2 </td><td>APPROX. 7.6 KM</td><td>277&deg; 31' 42.7"</td></tr><tr><td>HT3354</td><td>MAD 2 </td><td>APPROX. 7.0 KM</td><td>316&deg; 08' 42.6"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 25 24.31976(N) 122 21 15.10415(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 25 24.52800(N) 122 21 11.20400(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5714142042(NAD 83) <br>MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: SET IN MASS OF CONCRETE IN DEPRE <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1932 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1961 </td><td>SEE DESCRIPTION </td><td>USGS</td></tr><tr><td>1965 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1975 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1931 (CDM) FOUR MILES AIR-LINE SE OF HALFMOON BAY, 3 MILES AIR-LINE E OF THE COAST ROAD BETWEEN SANTA CRUZ AND HALFMOON BAY, AND ABOUT 1/2 MILE NW OF KINGS MOUNTAIN ROAD. THE STATION IS ABOUT 50 YARDS SW OF THE HIGHEST POINT OF A MOUNTAIN, KNOWN LOCALLY AS BALD KNOB, ON LAND CLAIMED BY THE BETENCOURT BROTHERS. <p>STATION MARK AND REFERENCE MARK NO. 1 ARE STANDARD BRONZE DISKS SET IN CONCRETE IN OUTCROPPING BEDROCK AS DESCRIBED IN NOTES 3 AND 12B. REFERENCE MARK NO. 2 IS A 1 1/4-INCH PIPE. <p>TO REACH THE STATION FROM THE JUNCTION OF THE COAST AND SAN MATEO ROADS N OF HALFMOON BAY, RUN 7.0 MILES S ALONG THE COAST ROAD TO THE KINGS MOUNTAIN ROAD, THEN TURN LEFT ON THIS ROAD AND RUN 6.5 MILES, THEN TURN LEFT OFF THE MAIN ROAD AND RUN 0.4 MILE. FROM HERE THE STATION MAY BE REACHED ON FOOT BY CLIMBING ABOUT 350 FEET. <p> <h2>STATION RECOVERY (1932) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1932 (FLP) STATION RECOVERED AS DESCRIBED. DESCRIPTION ADEQUATE. A LARGE SIGNAL FOR SHIP HYDROGRAPHY WAS BUILT OVER THE STATION. IT WILL PROBABLY NOT STAY UP LONG. THE OBSERVING STAND BUILT BY LIEUTENANT MEANEY WAS LEFT IN PLACE. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY C.D.M., 1931. <p>REACHED FROM THE POST OFFICE AT HALF MOON BAY, GO S ON MAIN STREET FOR 1.0 MI. TO THE INTERSECTION WITH STATE HIGHWAY 1. TURN LEFT AND FOLLOW STATE HIGHWAY 1 SE FOR 6.7 MI. TO A PAVED COUNTY ROAD ON THE LEFT. THIS IS 0.1 MI. NW OF THE BRIDGE OVER TUNITAS CREEK. GO NE (ALONG THE W SIDE OF TUNITAS CREEK), FOR 6.5 MI. TO A BOARD GATE ON THE LEFT (A SIGN ON THE GATE POST READS GIBSON RIDGE). FROM HERE ON THE DISTANCE IS ESTIMATED, BEING IT WAS PACKED, BUT IN DRY WEATHER A TRUCK CAN BE DRIVEN. GO THROUGH THE GATE, FOLLOW A GOOD GRADED ROAD FOR ABOUT 0.3 MI. TO A TANK RESERVOIR ON THE RIGHT (JUST AFTER PASSING THE TANK RESERVOIR), TAKE THE LEFT FORK, FOLLOW THIS ROAD W AND SW FOR ABOUT 1/2 MI. TO A T-ROAD ON THE RIGHT. TURN RIGHT (W) UPGRADE, GO ABOUT 0.3 MI. TO THE BLADED ROAD ON THE RIDGE, TURN RIGHT (N) UPGRADE, GO ABOUT 0.4 MI. TO A T-ROAD RIGHT, TURN RIGHT (E) UP THE RIDGE, GO ABOUT 0.3 MI. TO THE HIGHEST PART OF THE HILL AND THE STATION. <p>THERE ARE SEVERAL LARGE ANCHOR BOLTS LAYING ON THE STATION MARK. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961 A THOROUGH SEARCH OF THE AREA WAS MADE AND THE STATION WAS NOT FOUND. THERE HAS BEEN A TRACTOR IN THE VICINITY WITH THE LAST COUPLE OF YEARS, AND THE STATION HAS PROBABLY BEEN DESTROYED. THE ONLY THING FOUND WAS SOME REMNANTS OF A PREVIOUS WOODEN SIGNAL STAND. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1965 (EHS) REFERENCE MARK 2 WAS RECOVERED IN GOOD CONDITION 8 FEET SOUTHEAST OF A 30-INCH FIR TREE BUT THE STATION MARK AND REFERENCE MARK 1 WERE NOT FOUND AND HAVE APPARENTLY BEEN DESTROYED BY GRADING AT THEIR LOCATIONS. <p> <h2>STATION RECOVERY (1975) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN) REFERENCE MARK 1 WAS NOT RECOVERED AND HAS PROBABLY BEEN GRADED OUT OF THE GROUND. REFERENCE MARK 2 WAS FOUND SOLID IN THE GROUND BUT LEANING NOTICEABLY TO THE SOUTH. THE STATION MARK DISK WAS MISSING AND THE ROCK IN WHICH IT HAD BEEN SET WAS FOUND BROKEN, DESTROYING ANY EVIDENCE OF THE MARKS POSITION. STATION LOST. <p>AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 4 MILES SOUTHEAST OF HALF MOON BAY. HT2729 BALD PEAK http://www.geocaching.com/mark/details.asp?PID=HT2729 BALD PEAK Geocache Geocache BALD PEAK EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BALD PEAK</h1> <b> PID </b> HT2729 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> HUNTERS POINT (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 37 38.82084(N) 122 22 01.29986(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 0.50 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 626,769.030 1</td><td>835,210.475</td><td> MT </td><td>0.99993150</td><td> -1 ' 08 35.0"</td></tr><tr><td>SPC CA 3 </td><td>2,056,324.73 6</td><td>021,019.70 </td><td> sFT </td><td>0.99993150</td><td> -1 ' 08 35.0"</td></tr><tr><td>UTM 10 </td><td>4,164,669.523 </td><td>555,853.525</td><td> MT </td><td>0.99963842</td><td> +0 ' 23 11.2"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 37 38.81379(N) 122 22 01.29840(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 37 39.04000(N) 122 21 57.40000(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5585464670(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1946 </td><td>MONUMENTED </td><td>EBMUD</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1959 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>20010302</td><td>MARK NOT FOUND </td><td>INDIV</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCM) NO PREVIOUS DESCRIPTION. THE STATION WAS RECOVERED IN GOOD CONDITION AND IS A FLASHING AMBER LIGHT ON THE END OF THE APPROACH-LIGHT TRESTLE OFF THE NORTHEAST END OF RUNWAY 19L, AIRLINE ABOUT 1-3/4 MILES SOUTH-SOUTHEAST OF POINT SAN BRUNO AND 1-3/4 MILES EAST-NORTHEAST OF THE BAYSHORE FREEWAY. <p>THE STATION IS ALSO LISTED AS--SAN FRANCISCO AIRPORT, SIGNAL (SIG, 1954), 1955. <p> <h2>STATION RECOVERY (1959) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WTJ) STATION RECOVERED IN GOOD CONDITION AS DESCRIBED BY J.C.M. IN 1958. <p> <h2>STATION RECOVERY (2001) </h2> <p>RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2001 (TZ) RUNWAY 1R/19L WAS EXTENDED NORTHEASTWARD IN ABOUT 1960. ACCORDING TO THE RUNWAY-END COORDINATES ON THE AIRPORT INSTRUCTION CHART THE RUNWAY NOW COVERS THIS POSITION. HT3315 BARN SOUTH GABLE SW STA DERO http://www.geocaching.com/mark/details.asp?PID=HT3315 BARN SOUTH GABLE SW STA DERO Geocache Geocache BARN SOUTH GABLE SW STA DERO Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BARN SOUTH GABLE SW STA DERO</h1> <b> PID </b> HT3315 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PIGEON POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 14 59.40337(N) 122 24 42.36795(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 7.24 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -33.22 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 584,949.733 1</td><td>830,405.991</td><td> MT </td><td>0.99996720</td><td> -1 ' 10 13.6"</td></tr><tr><td>SPC CA 3 </td><td>1,919,122.58 6</td><td>005,256.99 </td><td> sFT </td><td>0.99996720</td><td> -1 ' 10 13.6"</td></tr><tr><td>UTM 10 </td><td>4,122,749.976 </td><td>552,167.002</td><td> MT </td><td>0.99963352</td><td> +0 ' 21 21.8"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 14 59.39581(N) 122 24 42.35582(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 14 59.60000(N) 122 24 38.44000(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5216722750(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED</td><td>Report By</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (JCM) A SMALL BARN IS LOCATED NEAR WHERE THE STATION PLOTS, BUT SINCE ITS GABLES FACE E-NE AND W-SW IT IS RECOMMENDED THE STATION BE CONSIDERED LOST. <p>THIS IS AN INTERSECTION STATION. AJ3975 BASE 2 SFO http://www.geocaching.com/mark/details.asp?PID=AJ3975 BASE 2 SFO Geocache Geocache BASE 2 SFO NGS NONE Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BASE 2 SFO</h1> <b> PID </b> AJ3975 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 37 21.82739(N) 122 23 56.04169(W) ADJUSTED <br> <b> NAVD 88 </b> 5.0 (meters) 16. (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,710,172.329 (meters) COMP <br> <b> Y </b> -4,270,729.401 (meters) COMP <br> <b> Z </b> 3,872,345.078 (meters) COMP <br> <b> LAPLACE CORR</b> 1.15 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -27.59 (meters) (05/31/01) GPS OBS <br> <b> GEOID HEIGHT</b> -32.59 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> B <br> <b> ELLP ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 2001. This is a SPECIAL STATUS position. See SPECIAL STATUS under the DATUM ITEM on the data sheet items page. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by GPS observations and a high-resolution geoid model. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 626,301.861 1</td><td>832,387.045</td><td> MT </td><td>0.99993168</td><td> -1 ' 09 45.2"</td></tr><tr><td>SPC CA 3 </td><td>2,054,792.02 6</td><td>011,756.50 </td><td> sFT </td><td>0.99993168</td><td> -1 ' 09 45.2"</td></tr><tr><td>UTM 10 </td><td>4,164,127.318 </td><td>553,044.400</td><td> MT </td><td>0.99963466</td><td> +0 ' 22 01.0"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000433 x 0.99993168 = 0.99993601 <br> <b>UTM 10 </b> 1.00000433 x 0.99963466 = 0.99963899 <br> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5304464127(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 0 = UNSPECIFIED SETTING <br>MARK LOGO: NONE <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - December 05, 2000 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1986 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>20001205</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (BW) THE STATION IS LOCATED AT THE SAN FRANCISCO INTERNATIONAL AIRPORT IN A PARKING LOT EAST OF THE SAN FRANCISCO INTERNATIONAL AIRPORT ENGINEERING BUILDING, BUILDING 676. WITHIN A SMALL FENCED COMPOUND. OWNERSHIP--THE CITY AND COUNTY OS SAN FRANCISCO, SAN FRANCISCO AIRPORT COMMISSION, SAN FRANCISCO CA 94102. FOR ACCESS--CONTACT--AIRFIELD OPERATIONS--GLEN BROTMAN, PHONE-650-794-3349. CHIEF AIRPORT SURVEYOR--HUGO TUPAC, PHONE--650-821-7770, FAX--650-635-2246. FAA FACILITIES MANAGER--PAUL CANDELARIE, PHONE--650-876-2839. NOTE--CONTACT THE AIRPORT A MINIMUM OF ONE WEEK IN ADVANCE TO MAKE ARRANGEMENTS FOR AN ESCORT. BADGES AND VEHICLE PASSES ARE REQUIRED. ESCORT BY AN AIRPORT SAFETY OFFICIAL IS MANDITORY WHILE WORKING AROUND RUNWAYS. AIRPORT SURVEY PERSONNEL CAN ESCORT YOU TO ALL STATION ON THE AIRPORT. EAR PROTECTION IS HIGHLY ADVISED. TO REACH THE STATION FROM HIGHWAY 101 NORTH AND THE SAN BRUNO AVE EXIT, TAKE SAN BRUNO AVE EAST FOR 0.3 MILE TO MCDONNELL RD. TURN RIGHT, SOUTH, ON MCDONNELL RD AND CONTINUE FOR 0.8 MILE TO THE AIRPORT COMMISSION ENGINEERING BUILDING ON THE LEFT. TURN LEFT, INTO A PARKING LOT ON THE NORTH SIDE OF THE BUILDING AND THE STATION STRAIGHT AHEAD. THE STATION IS ENCLOSED WITHIN A 2.13 X 8.22 M (7 X 27 FT) SECURED, FENCED IN COMPOUND. THE STATION IS THE TOP OF A 1.86 M (6.1 FT) POLE, 3 INCHES IN DIAMETER, SET 0.61 M (2 FT) DEEP. WITH A BOLT AND CAP TOP FOR USE WITH GPS ANTENNAS. THE STATION IS 6.4 M (21 FT) NORTHWEST OF THE NORTH CORNER OF A 1.2 X 2.1 M (4 X 7 FT) TRANSFORMER. 11 M (36.1 FT) NORTHEAST OF THE DEGE OF THE PARKING LOT. NOTE--A KEY IS REQUIRED TO ENTER GATE TO STATION. <p> AJ3974 BASE 3 SFO http://www.geocaching.com/mark/details.asp?PID=AJ3974 BASE 3 SFO Geocache Geocache BASE 3 SFO NGS NONE Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BASE 3 SFO</h1> <b> PID </b> AJ3974 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 37 47.10846(N) 122 23 20.65952(W) ADJUSTED <br> <b> NAVD 88 </b> 4.2 (meters) 14. (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,709,184.445 (meters) COMP <br> <b> Y </b> -4,270,791.849 (meters) COMP <br> <b> Z </b> 3,872,961.870 (meters) COMP <br> <b> LAPLACE CORR</b> 1.04 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.44 (meters) (05/31/01) GPS OBS <br> <b> GEOID HEIGHT</b> -32.58 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> B <br> <b> ELLP ORDER </b> FIRST CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 2001. This is a SPECIAL STATUS position. See SPECIAL STATUS under the DATUM ITEM on the data sheet items page. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by GPS observations and a high-resolution geoid model. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 627,063.517 1</td><td>833,270.193</td><td> MT </td><td>0.99993141</td><td> -1 ' 09 23.6"</td></tr><tr><td>SPC CA 3 </td><td>2,057,290.89 6</td><td>014,653.96 </td><td> sFT </td><td>0.99993141</td><td> -1 ' 09 23.6"</td></tr><tr><td>UTM 10 </td><td>4,164,912.044 </td><td>553,906.648</td><td> MT </td><td>0.99963579</td><td> +0 ' 22 22.9"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000446 x 0.99993141 = 0.99993587 <br> <b>UTM 10 </b> 1.00000446 x 0.99963579 = 0.99964025 <br> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5390764912(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 0 = UNSPECIFIED SETTING <br>MARK LOGO: NONE <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - December 05, 2000 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>20001129</td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>20001205</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 2000 (BW) THIS IS A FIXED GPS STATION USED BY AIRPORT SURVEY PERSONNEL AS A BASE FOR ALL GPS SURVEYS DONE ON THE AIRPORT. THE STATION IS LOCATED IN THE NORTHWEST QUADRANT OF SAN FRANCISCO INTERNATIONAL AIRPORT WITHIN AN ENCLOSED COMPOUND USED BY THE AIRPORT SURVEY CREWS. OWNERSHIP--CITY AND COUNTY OF SAN FRANCISCO, SAN FRANCISCO AIRPORT AIRPORT COMMISSION, SAN FRANCISCO, CA 94102. FOR ACCESS CONTACT--AIRFIELDS OPERATIONS--GLEN BROTHMAN--PHONE-650-794-3346. CHIEF AIRPORT SURVEYOR--HUGO F TUPAC--PHONE--650-8216-7770, FAX--650-635-2246. FAA FACILITIES MANAGER--PAUL CANDELARIE--PHONE--650-876-2839. NOTE----CONTACT THE AIRPORT A MINIMUM OF ONE WEEK IN ADVANCE TO MAKE ARRANGEMENTS FOR ESCORTS. THE AIRPORT REQUIRES AIRPORT SAFETY PERSONNEL FOR OPERATING IN AREA OF RUNWAYS. BADGES ARE REQUIRED, AS ARE VEHICLE PASSES. EAR PROTECTION IS HIGHLY SUGGESTED. TO REACH THE STATION FROM THE NORTHFIELD GATE, PASS THROUGH THE GATE AND FOLLOW THE SERVICE ROAD SOUTH FOR 0.2 MILES TO TAXIWAY Q. CROSS TAXIWAY Q AND CONTINUE ON THE SERVICE ROAD PARALLELING TAXIWAY C FOR 0.2 MILES TO A MAINTENANCE YARD ON THE LEFT. TURN LEFT, NORTHEAST, AND GO 0.1 MILE ACROSS THE PARKING LOT TO A GATE TO A SMALLER FENCED COMPOUND, PASS THROUGH THE GATE TO THE STATION AHEAD AND ADJACENT TO THE SURVEY TRAILOR. THE STATION IS A BOLT,( FOR THE ATTACHMENT OF A GPS ANTENNA ), ATTACHED TO A CAP ON THE TOP OF A 2.45 M X 80 CM(8.04 FT X 3 IN) STEEL PIPE EMBEDED 0.6 M (2 FT) INTO THE PARKING LOT PAVEMENT AND STRAPPED TO A 4X6.4X1.1M CONCRETE BASE FOR A PUMPING STATION. THE STATION IS 29.1 M (95.48 FT) EAST OF A LIGHT POLE, 19.8 M (64.96 FT) NORTH OF THE CURB OF THE EAST RETENTION POND, 7.5 M (24.6 FT) SOUTH OF A CHAINLINK FENCE, 4.9 M (16.07 FT) WEST OF A CHAIN LINK FENCE. NOTE-THERE IS A 10 M (13.28 FT) STANDARD ANTENNA CABLE ATTACHED TO THE POLE AND RUN INTO THE ADJACENT TRAILOR THAT THE AIRPORT SURVEY CREW MAINTAINS SURVEY EQUIPMENT AND OPERATE GPS RECEIVERS. <p> HT2744 BAYSHORE http://www.geocaching.com/mark/details.asp?PID=HT2744 BAYSHORE Geocache Geocache BAYSHORE CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAYSHORE</h1> <b> PID </b> HT2744 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 36 07.63679(N) 122 22 14.74008(W) ADJUSTED <br> <b> NAVD 88 </b> 2. (meters) 7. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 0.50 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 623,965.129 1</td><td>834,824.809</td><td> MT </td><td>0.99993254</td><td> -1 ' 08 43.2"</td></tr><tr><td>SPC CA 3 </td><td>2,047,125.59 6</td><td>019,754.39 </td><td> sFT </td><td>0.99993254</td><td> -1 ' 08 43.2"</td></tr><tr><td>UTM 10 </td><td>4,161,857.154 </td><td>555,542.924</td><td> MT </td><td>0.99963800</td><td> +0 ' 23 02.2"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000482 x 0.99993254 = 0.99993736 <br> <b>UTM 10 </b> 1.00000482 x 0.99963800 = 0.99964282 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> POINT SAN BRUNO RESET </td><td>348&deg; 44' 13.3"</td></tr><tr><td>UTM 10 </td><td> POINT SAN BRUNO RESET </td><td>347&deg; 12' 27.9"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2820</td><td>BAYSHORE RM 1 </td><td> 17.632 METERS</td><td>142&deg; 06' </td></tr><tr><td>DB2821</td><td>BAYSHORE RM 2 </td><td> 16.917 METERS</td><td>291&deg; 22' </td></tr><tr><td>HT2816</td><td>POINT SAN BRUNO RESET </td><td>APPROX. 5.8 KM</td><td>347&deg; 35' 30.1"</td></tr><tr><td>DB2822</td><td>BAYSHORE RM 3 </td><td> 4.500 METERS</td><td>350&deg; 11' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 36 07.62873(N) 122 22 14.73672(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 36 07.85400(N) 122 22 10.83800(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5554361857(NAD 83) <br>MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: TOP OF SQUARE CONCRETE MONUMENT <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1938 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1947 </td><td>SEE DESCRIPTION </td><td>USGS</td></tr><tr><td>1952 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1953 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1956 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1959 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1959 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (RRL) STATION IS LOCATED ON THE E SIDE OF THE BAYSHORE HIGHWAY, ABOUT 1 MILE NORTHWARD AT BURLINGAME. IT IS 51 METERS NORTHWARD OF AN UNUSED TRAFFIC TOWER. THE BAY SHORE IS WASHING AWAY HERE AND UNLESS THE HIGHWAY DIVISION BUILDS PROTECTIVE WORKS THE STATION MAY NOT BE PERMANENT. <p>THE STATION WAS ESTABLISHED AT THE REQUEST OF THE CITIES OF SAN FRANCISCO AND SAN MATEO FOR MAKING CONNECTIONS WITH U.S.C. AND G.S. TRIANGULATION. <p>STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE AS DESCRIBED IN NOTES 1B AND 11B. <p> <h2>STATION RECOVERY (1947) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1947 LETTER FROM MR. C.A. ECKLUND, DIVISION ENGINEER, U.S. GEOLOGICAL SURVEY, SACRAMENTO, CALIFORNIA, DATED MARCH 28, 1947-- <p>STATION IS LOCATED AT THE E SIDE OF THE BAYSHORE HIGHWAY, ABOUT 1 MILE N OF BROADWAY AT BURLINGAME, ABOUT 30 FEET E OF THE E EDGE OF THE HIGHWAY, 10 FEET W OF THE SHORELINE. IT WAS COVERED BY A SMALL ROCK CAIRN IN 1947. <p>STATION MARK IS A BRONZE STATION DISK SET IN THE TOP OF A CONCRETE CYLINDER. <p>REFERENCE MARK 1 WAS NOT FOUND. <p>REFERENCE MARK 2 IS IN AZIMUTH 111 DEG 21 MIN 52 SEC. DISTANCE 55.50 FEET. <p> <h2>STATION RECOVERY (1952) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (CVM) STATION AND REFERENCE MARKS WERE NOT RECOVERED. BAYSHORE IS WASHED AWAY WHERE STATION WAS ESTABLISHED AND IT IS BELIEVED THAT THE STATION AND REFERENCE MARKS ARE DESTROYED. <p> <h2>STATION RECOVERY (1953) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1953 (FAR) THE STATION IS LOCATED ON THE E SIDE OF THE OLD BAYSHORE HIGHWAY, ABOUT 1.0 MI. NW OF THE BROADWAY BURLINGAME OVERPASS, ABOUT 0.6 MI. E-SE OF THE OVERPASS FROM 101 BYPASS TO MILLBRAE, ABOUT 0.3 MI. S OF THE GATE TO SAN FRANCISCO AIRPORT, 167 M. SE ALONG THE HIGHWAY FROM A SMALL CONCRETE CULVERT AND BRIDGE, ABOUT 30 FT. E OF THE E EDGE OF THE HIGHWAY, AND 10 FT. SW OF THE SHORELINE. IT IS A STANDARD DISK, SET ABOUT 6 IN. BELOW THE SURFACE, AND COVERED OVER BY A SMALL ROCK CAIRN. THE STAMPING WAS ILLEGIBLE. <p>REFERENCE MARK 1 COULD NOT BE FOUND. <p>REFERENCE MARK 2 WAS FOUND IN GOOD CONDITION. THE DISTANCE TO IT WAS VERIFIED. THE STAMPING WAS ILLEGIBLE. <p> <h2>STATION RECOVERY (1956) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1956 (WTJ) NO TRACE WAS FOUND OF THE STATION OR REFERENCE MARKS. THE SHORE HAS WASHED OFF THE EDGE OF THE OLD ROAD (ROAD NO LONGER USED). STATION LOST. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) THE STATION MARK AND REFERENCE MARK 1 WERE FOUND IN GOOD CONDITION, BUT ONLY THE BOTTOM PART OF THE CONCRETE POST OF REFERENCE MARK 2 WAS FOUND SO REFERENCE MARK 3 WAS SET ON THIS DATE. A COMPLETE DESCRIPTION FOLLOWS-- <p>THE STATION IS LOCATED NEAR THE SHORELINE ON THE NE SIDE OF A PAVED ROAD (THE OLD BAYSHORE HIGHWAY) AND IS, AIRLINE, ABOUT 1 MI. N-NW OF THE CENTER OF THE BUSINESS DISTRICT OF BURLINGAME, 1/2 MI. SE OF THE S END OF THE SAN FRANCISCO INTERNATIONAL AIRPORT, AND 1/4 MI. NE OF THE BAYSHORE FREEWAY. <p>TO REACH THE STATION FROM THE RAILROAD STATION IN MILLBRAE, GO NE ON MILLBRAE AVENUE FOR 0.4 MI. TO THE BAYSHORE FREEWAY. CROSS OVER THE FREEWAY AND CONTINUE NE FOR 0.25 MI. TO A T-ROAD. TURN RIGHT AND GO SE FOR 0.25 MI. TO A CULVERT. CONTINUE SE FOR 0.1 MI. TO A WITNESS POST AND THE STATION ON THE LEFT. <p>THE STATION MARK IS A STANDARD DISK, STAMPED BAYSHORE 1938, SET IN THE TOP OF A 12-IN. CONCRETE CYLINDER THAT IS 4 IN. BELOW THE SURFACE OF THE GROUND. IT IS 183 YD. SE OF A SMALL WOODEN CULVERT, 58.0 FT. NE OF THE CENTERLINE OF THE ROAD, 5 FT. SW OF THE SHORELINE, AND 1.8 FT. NW OF A WITNESS POST. <p>REFERENCE MARK 1 IS AN AZIMUTH-MARK DISK, STAMPED BAYSHORE NO 1 1938 SET IN THE TOP OF A 12-IN. CONCRETE CYLINDER THAT IS 16 IN. BELOW THE SURFACE OF THE GROUND. IT IS 42 FT. NE OF THE CENTERLINE OF THE ROAD AND ABOUT THE SAME ELEVATION AS THE STATION. <p>REFERENCE MARK 3 IS A STANDARD DISK, STAMPED BAYSHORE NO 3 1938 CEMENTED IN A DRILL HOLE IN THE CENTER AND THE TOP OF A SLAB OF CONCRETE (ABOUT 1 FT. THICK AND 9 FT. IN DIAMETER) THAT HAS BEEN POURED OVER THE ROCKS AT THE EDGE OF THE WATER. IT IS ABOUT 1 FT. LOWER THAN THE STATION. <p>HEIGHT OF TRIPOD--1 METER. <p> <h2>STATION RECOVERY (1959) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (WTJ) STATION RECOVERED IN GOOD CONDITION AS DESCRIBED BY J.C.M. IN 1958. <p> <h2>STATION RECOVERY (1959) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (JCM) REFERENCE MARK NUMBER 1 WAS SEARCHED FOR BUT NOT FOUND. THE IMPRINT OF THE REFERENCE MARK NUMBER 3 DISK WAS FOUND IN A CONCRETE SLAB BUT THE DISK WAS GONE. THE SURFACE-STATION MARK CONCRETE POST WAS FOUND LYING LOOSE ON TOP OF THE GROUND AND THE DISK WAS REMOVED ON THIS DATE. THE UNDERGROUND-STATION MARK WAS SEARCHED FOR BUT NOT FOUND AND IT IS DOUBTED WHETHER ONE WAS SET. STATION LOST. HT2800 BAYSHORE CONSOL CHEM IND UP TK http://www.geocaching.com/mark/details.asp?PID=HT2800 BAYSHORE CONSOL CHEM IND UP TK Geocache Geocache BAYSHORE CONSOL CHEM IND UP TK Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAYSHORE CONSOL CHEM IND UP TK</h1> <b> PID </b> HT2800 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 41 51.08876(N) 122 24 36.01293(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 1.12 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 634,620.981 1</td><td>831,576.529</td><td> MT </td><td>0.99992961</td><td> -1 ' 10 09.7"</td></tr><tr><td>SPC CA 3 </td><td>2,082,085.67 6</td><td>009,097.33 </td><td> sFT </td><td>0.99992961</td><td> -1 ' 10 09.7"</td></tr><tr><td>UTM 10 </td><td>4,172,419.375 </td><td>552,012.379</td><td> MT </td><td>0.99963332</td><td> +0 ' 21 38.8"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 41 51.08198(N) 122 24 36.01176(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 41 51.32000(N) 122 24 32.11000(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5201272419(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED</td><td>Report By</td></tr><tr><td>1965 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1965 (PAS) RECOVERED. LOCATED IN BAYSHORE, ABOUT 3/4 MILE SOUTHEAST OF THE COW PALACE, ABOUT 1/2 MILE SOUTH-SOUTHWEST OF THE JUNCTION OF GENEVA AVENUE AND BAYSHORE HIGHWAY AND ABOUT 800 FEET WEST OF THE HIGHWAY. <p>THE STATION IS A FLAT TOP TANK ABOUT 20 FEET HIGH ON THE NORTHEAST SLOPE OF A BARE HILL. IT IS THE SMALLER AND HIGHER IN ELEVATION OF TWO TANKS. THE TANK IS NOW USED BY THE NATIONAL ANILINE DIVISION OF THE ALLIED CHEMICAL AND DYE CORP. HT2801 BAYSHORE CONSOL CHEM LOW TANK http://www.geocaching.com/mark/details.asp?PID=HT2801 BAYSHORE CONSOL CHEM LOW TANK Geocache Geocache BAYSHORE CONSOL CHEM LOW TANK Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BAYSHORE CONSOL CHEM LOW TANK</h1> <b> PID </b> HT2801 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 41 52.89074(N) 122 24 32.54356(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 1.09 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.55 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 634,674.788 1</td><td>831,662.630</td><td> MT </td><td>0.99992961</td><td> -1 ' 10 07.6"</td></tr><tr><td>SPC CA 3 </td><td>2,082,262.20 6</td><td>009,379.81 </td><td> sFT </td><td>0.99992961</td><td> -1 ' 10 07.6"</td></tr><tr><td>UTM 10 </td><td>4,172,475.445 </td><td>552,096.988</td><td> MT </td><td>0.99963343</td><td> +0 ' 21 41.0"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 41 52.88337(N) 122 24 32.54285(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 41 53.12000(N) 122 24 28.64000(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5209772475(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED</td><td>Report By</td></tr><tr><td>1965 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1965 (PAS) RECOVERED. LOCATED IN BAYSHORE ABOUT 3/4 MILE SOUTHEAST OF THE COW PALACE, ABOUT 1/2 MILE SOUTH-SOUTHEAST OF THE JUNCTION OF GENEVA AVENUE AND BAYSHORE HIGHWAY AND ABOUT 500 FEET WEST OF THE HIGHWAY. <p>THE STATION IS THE LOWER AND LARGER OF TWO FLAT-TOPPED TANKS, ON THE NORTHEAST SLOPE OF A BARE HILL. THE TANK IS ABOUT 35 FEET HIGH AND IS NOW USED BY THE NATIONAL ANILINE DIVISION OF ALLIED CHEMICAL AND DYE CORP. HT0438 BB 110 C OF SM http://www.geocaching.com/mark/details.asp?PID=HT0438 BB 110 C OF SM Geocache Geocache BB 110 C OF SM CA3390 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BB 110 C OF SM</h1> <b> PID </b> HT0438 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 32 32. (N) 122 18 16. (W) SCALED <br> <b> NAVD 88 </b> 7.32 (+/-2cm) 24.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 617,200. </td><td> 1,840,550. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.484 (m) 21.27 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG614552(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE COLUMN <br>STAMPING: BB 110 1932 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>CA3390</td></tr><tr><td>1952 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1952 AT SAN MATEO. AT SAN MATEO, AT THE SOUTHWEST CORNER OF THE INTERSECTION OF 27TH AVENUE AND EDISON STREET, 40.3 FEET SOUTHWEST OF THE CENTER OF A MANHOLE COVER AT THE CENTER OF THE INTERSECTION, 30.9 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE SAN MATEO FIRE STATION BUILDING, 29.3 FEET WEST OF THE CENTER LINE OF THE STREET, 29.1 FEET SOUTH OF THE CENTER LINE OF THE AVENUE, 6.3 FEET NORTHEAST OF A FLAG POLE, AND SET IN THE TOP OF A 3-FOOT SQUARE CONCRETE COLUMN 0.3 FOOT BELOW THE SURFACE OF THE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION. HT2747 BELMONT WATER MAIN VENT SPIPE http://www.geocaching.com/mark/details.asp?PID=HT2747 BELMONT WATER MAIN VENT SPIPE Geocache Geocache BELMONT WATER MAIN VENT SPIPE Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BELMONT WATER MAIN VENT SPIPE</h1> <b> PID </b> HT2747 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 30 42.67085(N) 122 16 13.03585(W) ADJUSTED <br> <b> NAVD 88 </b> <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.82 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.50 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p> <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 613,776.291 1</td><td>843,505.329</td><td> MT </td><td>0.99993785</td><td> -1 ' 05 01.8"</td></tr><tr><td>SPC CA 3 </td><td>2,013,697.71 6</td><td>048,233.73 </td><td> sFT </td><td>0.99993785</td><td> -1 ' 05 01.8"</td></tr><tr><td>UTM 10 </td><td>4,151,906.420 </td><td>564,489.579</td><td> MT </td><td>0.99965123</td><td> +0 ' 26 39.7"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 30 42.66505(N) 122 16 13.03223(W) AD(1984.00) 4 <br> <b> NAD 27 </b> 37 30 42.89000(N) 122 16 09.14000(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6449051906(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED</td><td>Report By</td></tr><tr><td>1947 </td><td>SEE DESCRIPTION </td><td>USGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1969 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY US GEOLOGICAL SURVEY 1947 LETTER FROM MR. C.A. ECKLUND, DIVISION ENGINEER, U.S. GEOLOGICAL SURVEY, SACRAMENTO, CALIFORNIA, DATED MARCH 28, 1947-- <p>A LARGE BLACK STEEL STANDPIPE OWNED BY THE CITY OF SAN FRANCISCO. IT IS LOCATED ON A HILLSIDE 850 FEET SW OF EL CAMINO REAL (U.S. HIGHWAY 101) BETWEEN SAN CARLOS AND BELMONT IN SAN MATEO COUNTY. <p>THE STANDPIPE HAS BEEN IN THE SAME POSITION FOR ABOUT 60 YEARS. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) THE STATION WAS RECOVERED IN GOOD CONDITION AND THE 1947 DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITIONS-- <p>1. THE STATION IS 5 FT. IN DIAMETER AND ABOUT 55 FT. HIGH. <p>2. IT IS ABOUT 45 FT. SW OF THE PROJECTION OF THE CENTERLINES OF CHESTNUT STREET AND SUNNYSLOPE AVENUE. <p>THIS IS AN INTERSECTION STATION. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (RMS) THE FLANGED STEEL BASE ON WHICH THE STANDPIPE WAS MOUNTED IS STILL IN PLACE BUT THE STANDPIPE HAS BEEN REMOVED. AF8988 BILLS YARD http://www.geocaching.com/mark/details.asp?PID=AF8988 BILLS YARD Geocache Geocache BILLS YARD NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BILLS YARD</h1> <b> PID </b> AF8988 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> PALO ALTO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 29 42.40659(N) 122 13 06.87678(W) ADJUSTED <br> <b> NAVD 88 </b> 3.1 (meters) 10. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.88 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.52 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1998. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 611,833.577 1</td><td>848,041.968</td><td> MT </td><td>0.99993910</td><td> -1 ' 03 07.8"</td></tr><tr><td>SPC CA 3 </td><td>2,007,323.99 6</td><td>063,117.69 </td><td> sFT </td><td>0.99993910</td><td> -1 ' 03 07.8"</td></tr><tr><td>UTM 10 </td><td>4,150,085.886 </td><td>569,075.109</td><td> MT </td><td>0.99965877</td><td> +0 ' 28 32.4"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000462 x 0.99993910 = 0.99994372 <br> <b>UTM 10 </b> 1.00000462 x 0.99965877 = 0.99966339 <br> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (06/18/98) 2.3 (m) 8. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6907550086(NAD 83) <br>MARKER: DD = SURVEY DISK <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1983 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>20041120</td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1983 (PRC) THE STATION IS LOCATED NEAR THE SOUTHEAST CORNER OF THE SOUTH BAY BOAT WORKS, REDWOOD CITY. TO REACH THE STATION FROM U.S. HIGHWAY 101, TAKE THE REDWOOD CITY EXIT AND PROCEED TO VETERANS BLVD. HEAD EAST ON MAPLE STREET AND PROCEED OVER HWY 101 OVERPASS UNTIL THE ROAD BENDS A SHARP LEFT. THE PROPERTY ON THE RIGHT IMMEDIATELY AFTER THE TURN IS THE SOUTH BAY BOAT WORKS. GO TO THE SOUTHEAST CORNER OF THE PROPERTY NEAR THE END OF THE 2-1/2 FOOT HIGH CONCRETE BULKHEAD. THE STATION IS A STANDARD NATIONAL OCEAN SURVEY DISK STAMPED---BILLS YARD 1983---, SET IN A MASS OF CONCRETE ABOUT 0.7 FOOT BELOW THE SURFACE OF THE GROUND. THE MONUMENT IS 12-INCHES IN DIAMETER, 1.2 METERS FROM THE CONCRETE BULKHEAD, 1.55 METERS FROM THE CENTER OF A METAL PILE AND 3 METERS NORTHWEST OF A SMALL WOODEN PILE. REFERENCE MARK 1 IS A SLIGHT PUNCH MARK IN THE CENTER OF A 1.5 CENTIMETER IN DIAMETER, HEXAGONAL BOLT HEAD, ON TOP OF THE CIRCUMFERENCE AND NEAR THE EAST END OF THE SOUTHERLY OF TWO 1-1/2 FOOT IN DIAMETER CULVERTS. THE BOLT IS NOT ONE THAT FORM PART OF THE PROTRUDING SUPPORTS FOR THE HINGED CULVERT COVERS. THE CULVERTS ARE ABOUT 1 FOOT ABOVE MEAN HIGH WATER. THE MARK IS ABOUT 1.18 METERS FROM A SIMILIAR BOLT HEAD ON AN ADJACENT CULVERT. THE CULVERTS ARE ON THE OUTSIDE OF A 6-FOOT HIGH WOODEN FENCE THAT MARKS THE SOUTH BOUNDARY OF THE PROPERTY AND ABOUT 3 METERS FROM THE FENCE. <p> <h2>STATION RECOVERY (2004) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 2004 (KCA) NOT FOUND THIS DATE BECAUSE OF A WEEKEND LOCKED VAN'S STORAGE FACILITY RESTRICTING ACCESS TO THE AREA. HT2775 BLACK MOUNTAIN http://www.geocaching.com/mark/details.asp?PID=HT2775 BLACK MOUNTAIN Geocache Geocache BLACK MOUNTAIN CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BLACK MOUNTAIN</h1> <b> PID </b> HT2775 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 36 49.44116(N) 122 27 31.13814(W) ADJUSTED <br> <b> NAVD 88 </b> 196. (meters) 643. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 4.71 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.65 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 625,412.364 1</td><td>827,092.957</td><td> MT </td><td>0.99993204</td><td> -1 ' 11 56.9"</td></tr><tr><td>SPC CA 3 </td><td>2,051,873.73 5</td><td>994,387.48 </td><td> sFT </td><td>0.99993204</td><td> -1 ' 11 56.9"</td></tr><tr><td>UTM 10 </td><td>4,163,097.136 </td><td>547,777.525</td><td> MT </td><td>0.99962812</td><td> +0 ' 19 49.5"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99997439 x 0.99993204 = 0.99990643 <br> <b>UTM 10 </b> 0.99997439 x 0.99962812 = 0.99960252 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> VORTAC SAN FRANCISCO SFO </td><td>086&deg; 18' 04.5"</td></tr><tr><td>UTM 10 </td><td> VORTAC SAN FRANCISCO SFO </td><td>084&deg; 46' 18.1"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>HT2904</td><td>CAMPANILE UNIVERSITY OF CALIF </td><td>APPROX.33.7 KM</td><td>031&deg; 37' 47.5"</td></tr><tr><td>HT2960</td><td>OAKLAND TRIBUNE BLDG FLAGPOLE </td><td>APPROX.26.8 KM</td><td>038&deg; 10' 04.8"</td></tr><tr><td>HT2548</td><td>OAKLAND MORMON TEMPLE SPIRE </td><td>APPROX.31.4 KM</td><td>046&deg; 39' 23.4"</td></tr><tr><td>HT2795</td><td>DUPONT TANK </td><td>APPROX. 5.0 KM</td><td>050&deg; 02' 25.2"</td></tr><tr><td>HT2826</td><td>SOUTH SAN FRANCISCO FORBES TWR </td><td>APPROX. 7.9 KM</td><td>055&deg; 25' 49.5"</td></tr><tr><td>DB2858</td><td>BLACK MOUNTAIN RM 2 </td><td> 17.800 METERS</td><td>078&deg; 18' </td></tr><tr><td>HT2764</td><td>VORTAC SAN FRANCISCO SFO </td><td>APPROX. 7.5 KM</td><td>085&deg; 06' 07.6"</td></tr><tr><td>DB2857</td><td>BLACK MOUNTAIN RM 1 </td><td> 34.534 METERS</td><td>155&deg; 19' </td></tr><tr><td>HT2777</td><td>FLAT RESET </td><td>170.957 METERS</td><td>283&deg; 11' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 36 49.43213(N) 122 27 31.13412(W) AD(1984.00) 3 <br> <b> NAD 27 </b> 37 36 49.65700(N) 122 27 27.23100(W) AD( ) 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG4777863097(NAD 83) <br>MARKER: DS = TRIANGULATION STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: SET IN MASS OF CONCRETE IN DEPRE <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1938 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1954 </td><td>GOOD </td><td>CGS</td></tr><tr><td>1960 </td><td>GOOD </td><td>CGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>AMS</td></tr><tr><td>1961 </td><td>GOOD </td><td>CGS</td></tr><tr><td>1972 </td><td>GOOD </td><td>LOCENG</td></tr><tr><td>1973 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1977 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20020122</td><td>GOOD </td><td>INDIV</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (RRL) STATION IS ON THE NORTHERN END OF SWEENY RIDGE BEARING ABOUT N 80 DEG W TRUE FROM THE EXTREME N END OF SAN ANDREAS LAKE. IT IS ON THE E SIDE OF THE RIDGE AND LOOKS DOWN UPON THE BAY. IT IS 171 METERS EASTWARD OF STATION FLAT 1899. <p>STATION AND REFERENCE MARK NO. 1 ARE STANDARD BRONZE DISKS SET IN CONCRETE IN OUTCROPPING BEDROCK. <p>REFERENCE MARK NO. 2 IS A STANDARD BRONZE DISK IN OUTCROPPING BEDROCK. <p>TO REACH STATION, TURN OFF SKYLINE BOULEVARD AT THE SAN FRANCISCO COUNTY JAIL ROAD AND TAKE SIDE ROAD DOWN STEEP GRADE TO LEFT. OBTAIN KEY TO GATE AT S.F. WATER DEPT. WATCHMANS HOUSE ON SKYLINE BOULEVARD AT SE END OF SAN ANDREAS LAKE. THE ROAD IS NARROW AND OVERGROWN WITH BUSHES BUT MAY BE FOLLOWED BY SMALL TRUCK TO THE SUMMIT OF THE RIDGE VIA THE SOUTHERN SLOPES. TOTAL DISTANCE ABOUT 3.2 MILES. TRUCK MAY BE PARKED NEAR SECOND GATE AND SHORT CUT TAKEN BY FOOT. STATION IS ABOUT 200 FEET N OF AN OLD CORRAL AND 50 FEET W OF A BARBED-WIRE FENCE. <p> <h2>STATION RECOVERY (1954) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1954 (CAG) STATION MARK AND TWO REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION. A REVISED DESCRIPTION FOLLOWS-- <p>STATION IS ON THE N END OF SWEENEY RIDGE BEARING ABOUT N 80 DEG W TRUE FROM THE EXTREME N END OF SAN ANDREAS LAKE. IT IS ON THE E SIDE OF THE RIDGE AND LOOKS DOWN UPON THE BAY. STATION IS ABOUT 50 FT. W OF A BARBED-WIRE FENCE, ROUGHLY 200 FT. E OF THE U.S. ARMY RADAR INSTALLATION, AND 171 M. E OF STATION FLAT 1899. <p>STATION AND REFERENCE MARK 1 ARE STANDARD BRONZE DISKS, SET IN CONCRETE IN OUTCROPPING BEDROCK. <p>REFERENCE MARK 2 IS A STANDARD BRONZE DISK, SET IN OUTCROPPING BEDROCK. <p>TO REACH GO S ON SKYLINE BOULEVARD AND TURN RIGHT ON THE S.F. COUNTY JAIL ROAD. TAKE SIDE ROAD DOWN STEEP GRADE TO THE LEFT (BEFORE REACHING THE JAIL) AND PROCEED (THROUGH TWO UNLOCKED GATES) TO THE U.S. ARMY RADAR INSTALLATION AND STATION AT THE SUMMIT. THE ROAD HAS BEEN IMPROVED AND CAN BE DRIVEN IN ANY TYPE VEHICLE. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (WTJ) RECOVERED AS DESCRIBED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY US ARMY MAP SERVICE (NOW DMA) 1961 STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (IRR) THE STATION MARK AND REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION AND THE 1938 AND 1954 DESCRIPTIONS ARE ADEQUATE WITH THE FOLLOWING ADDITIONS-- <p>THE STATION MARK IS LOCATED INSIDE A MILITARY RESERVATION, ABOUT 75 YARDS NORTH OF THE MAIN GATE AND 20 FEET WEST OF A CHAIN-LINK FENCE. THE MARK WAS FOUND STAMPED BLACK MT AND WAS RESTAMPED BLACK MOUNTAIN 1938 ON THIS DATE. <p>REFERENCE MARK NUMBER 1 WAS FOUND STAMPED NO 1 AND WAS RESTAMPED BLACK MOUNTAIN NO 1 1938 ON THIS DATE. IT IS OUTSIDE OF THE MILITARY RESERVATION AND 16 FEET SOUTHEAST OF A CHAIN-LINK FENCE ENCLOSING THE RESERVATION. <p>REFERENCE MARK NUMBER 2 WAS FOUND STAMPED NO 2 AND WAS RESTAMPED BLACK MOUNTAIN NO 2 1938 ON THIS DATE. IT IS OUTSIDE OF THE MILITARY RESERVATION AND 38 FEET EAST OF THE CHAIN-LINK FENCE ENCLOSING THE RESERVATION. <p>TO REACH THE STATION FROM THE POST OFFICE AT THE SHARP PARK DISTRICT OF PACIFICA GO SOUTH ON STATE HIGHWAY 1 FOR 0.9 MILE TO A CROSS ROAD. TURN LEFT ONTO SHARP PARK ROAD AND GO NORTHEAST 2.2 MILES TO A T-ROAD. TURN RIGHT ONTO SKYLINE BOULEVARD (STATE HIGHWAY 5) AND GO SOUTHEAST 0.8 MILE TO AN INTERSECTION. TURN RIGHT AS PER SIGN S.F. COUNTY JAIL AND GO SOUTH 0.25 MILE TO A FORK. TAKE THE LEFT FORK AND GO SOUTH 2.6 MILES TO A T-ROAD AT THE TOP OF SWEENEY RIDGE. TURN RIGHT AND GO NORTH ALONG THE CREST OF THE RIDGE 0.5 MILE TO A MILITARY RESERVATION AND THE STATION. <p> <h2>STATION RECOVERY (1972) </h2> <p>RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1972 (DD) FIRE CONTROL ROAD F-5 IN SIGN IS DOWN. TURN LEFT AT NEW BAPTIST CHURCH <p>SIGN BLACK MTN LOOKOUT IS DOWN AT GATE. GATE IS LOCKED (NEED KEY) <p>ALL AZIMUTH MARKS ARE IN. ALL R.M.S ARE IN. <p> <h2>STATION RECOVERY (1973) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (CLN) THE STATION MARK, RM 1 (USGS), AND THE AZIMUTH MARK SET IN 1956 WERE RECOVERED IN GOOD CONDITION. THE BLACK MTN (USGS) DISK WAS FOUND SOLID IN THE ROCK IT WAS IN BUT PART OF THE ROCK WAS FOUND BROKEN AWAY FROM AROUND IT. IT WAS REINFORCED WITH CONCRETE AND REFERENCE MARK 2 WAS SET ON THIS DATE. THE DIRECTION TO RM 1 (USGS) MEASURED ON THIS DATE AGREED WITH THE 1950 MEASUREMENT. SLIGHT DIFFERENCES WERE NOTED BETWEEN THE 1950 MEASUREMENTS AND THE DISTANCES TO BLACK MTN (USGS) AND RM 1 (USGS) AND THE DIRECTION TO BLACK MTN (USGS) MEASURED ON THIS DATE. THE PREVIOUS DESCRIPTIONS ARE ADEQUATE WITH THE FOLLOWING ADDITIONS-- <p>TO REACH THE STATION SITE FROM THE POST OFFICE AT TOLL HOUSE GO SOUTHWEST ON STATE HIGHWAY 168 FOR 1.0 MILE TO A FORK AT A SIGN SIERRA HIGH SCHOOL 4 MILES. TAKE THE RIGHT FORK AND GO NORTHWEST ON LODGE ROAD 3.8 MILES TO SIERRA HIGH SCHOOL AND THE AZIMUTH MARK ON THE LEFT. CONTINUE NORTHWEST ON LODGE ROAD 0.8 MILE TO A SIDE ROAD ON THE LEFT JUST EAST OF A BAPTIST CHURCH. TURN LEFT AND GO SOUTH 1.7 MILES TO A LOCKED GATE. (A KEY MAY BE OBTAINED FROM THE STATE FORESTRY FIRE STATION AT HUMPHREYS STATION ABOUT 4 MILES SOUTHWEST OF TOLL HOUSE.) PASS THROUGH THE GATE AND GO SOUTH AND SOUTHEAST 3.1 MILES TO THE TOP OF THE MOUNTAIN, THE BLACK MOUNTAIN LOOKOUT, AND THE STATION SITE. <p>REFERENCE MARK 2 IS A NGS REFERENCE MARK DISK STAMPED BLACK MTN 1950 NO 2 1973 CEMENTED IN A DRILL HOLE IN AN OUTCROPPING ROCK PROJECTING 0.8 FOOT ABOVE THE GROUND AND IS 26.9 FEET NORTH OF THE NORTHWEST LEG OF THE LOOKOUT TOWER AND ABOUT 1/2 FOOT LOWER THAN THE STATION MARK. <p>AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2-1/2 MILES WEST OF TOLL HOUSE. <p> <h2>STATION RECOVERY (1977) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (RBM) THE STATION WAS RECOVERED AS DESCRIBED. THE MILITARY NO LONGER OCCUPIES THE SITE AND IT IS NECESSARY TO OBTAIN A KEY FROM THE SAN FRANCISCO WATER DEPT. AT 1000 EL CAMINO REAL, MILLBRAE TO PASS THROUGH A LOCKED GATE AT THE WEST END OF SNEATH LANE. <p>AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2 MILES WEST OF SAN BRUNO. <p> <h2>STATION RECOVERY (2002) </h2> <p>RECOVERY NOTE BY INDIVIDUAL CONTRIBUTORS 2002 THE STATION IS HIDDEN IN THE BRUSH MAYBE 25 METERS EAST OF THE NORTHERNMOST BUILDING AT THE ABANDONED NIKE BASE, AND 7-8 METERS NNE OF THE EDGE OF THE PAVEMENT. A LONE POLE (ABANDONED POWER-LINE) IS 30-40 METERS TO THE NORTH. VIEWED FROM THE STATION, AZIMUTH TO THE POLE IS 1/3 OF THE WAY FROM GOLDEN GATE BRIDGE TO SUTRO TOWER. AF8989 BLOCK 2 http://www.geocaching.com/mark/details.asp?PID=AF8989 BLOCK 2 Geocache Geocache BLOCK 2 NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BLOCK 2</h1> <b> PID </b> AF8989 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 34 24.34592(N) 122 16 45.54672(W) ADJUSTED <br> <b> NAVD 88 </b> 3.3 (meters) 11. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.13 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1998. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 620,623.990 1</td><td>842,837.018</td><td> MT </td><td>0.99993396</td><td> -1 ' 05 21.7"</td></tr><tr><td>SPC CA 3 </td><td>2,036,163.87 6</td><td>046,041.12 </td><td> sFT </td><td>0.99993396</td><td> -1 ' 05 21.7"</td></tr><tr><td>UTM 10 </td><td>4,158,731.908 </td><td>563,639.092</td><td> MT </td><td>0.99964988</td><td> +0 ' 26 22.1"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000459 x 0.99993396 = 0.99993855 <br> <b>UTM 10 </b> 1.00000459 x 0.99964988 = 0.99965447 <br> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (06/18/98) 2.4 (m) 8. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6363958732(NAD 83) <br>MARKER: DD = SURVEY DISK <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1983 </td><td>MONUMENTED </td><td>NOS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1983 (PRC) THE STATION IS LOCATED ABOUT 1.6 MILES WEST OF THE WEST END OF THE SAN MATEO-HAYWARD BRIDGE OVER SAN FRANCISCO BAY, NEAR THE SOUTHEAST CORNER OF A CONCRETE BLOCKHOUSE THAT IS ABOUT 10-FEET BY 12-FEET BY 10-FEET HIGH. TO REACH THE STATION FROM HIGHWAY 92, TAKE THE FOSTER CITY BOULEVARD EXIT AND GO IN A NORTHERLY DIRECTION FOR ABOUT 0.3 MILE TO THIRD AVENUE EAST. TURN LEFT AND GO 0.1 MILE, AT WHICH POINT, THE CONCRETE BLOCKHOUSE SHOULD BE VISIBLE TO THE EAST, ABOUT 400 METERS DISTANT. IN DRY WEATHER ONE CAN DRIVE ON THE LEVEE TO THE BLOCKHOUSE AND STATION. THE STATION IS A STANDARD NATIONAL OCEAN SURVEY DISK STAMPED---BLOCK 2 1982---, SET IN A MASS OF CONCRETE, ABOUT 11-INCHES IN DIAMETER AND ABOUT 6-INCHES BELOW THE SURFACE OF THE GROUND, ABOUT 2.6 METERS FROM THE SOUTHEAST CORNER OF THE BUILDING, ABOUT 2.5 METERS FROM THE SOUTHEAST CORNER OF THE CONCRETE STEPS, ABOUT 1.2 METERS FROM THE SOUTHEAST CORNER OF THE NARROW, CONCRETE WALKWAY THAT FORMS A PERIMETER FOR THE BLOCKHOUSE AND ABOUT 1.65 METERS FROM THE NORTHEAST CORNER OF A 3-FOOT BY 5-1/2-FOOT BY 1/2 FOOT HIGH CONCRETE SLAB. REFERENCE MARK 1 IS A 20-PENNY NAIL IMBEDDED IN A DRILL HOLE, NEAR THE NORTHEAST CORNER OF THE CONCRETE WALKWAY, ABOUT 0.08 METER FROM THE CORNER AND 1.38 METERS FROM THE NORTHEAST CORNER OF THE BUILDING AND 0.018 METER BELOW THE CONCRETE SURFACE. DESCRIBED BY F.L. ROSARIO HT0641 BM 5 TIDAL MARK http://www.geocaching.com/mark/details.asp?PID=HT0641 BM 5 TIDAL MARK Geocache Geocache BM 5 TIDAL MARK CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BM 5 TIDAL MARK</h1> <b> PID </b> HT0641 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 39 04. (N) 122 22 59. (W) SCALED <br> <b> NAVD 88 </b> 3.71 (+/-2cm) 12.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.57 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 629,420. </td><td> 1,833,850. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.892 (m) 9.49 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG544672(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: NO 5 1941 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1941 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1.4 MI E FROM SAN FRANCISCO. 0.1 MILE SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT SOUTH SAN FRANCISCO, THENCE 1.3 MILE EAST ALONG GRAND AVENUE, 375 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE W.P. FULLER INDUSTRIAL BUILDING, AT A CONCRETE STORAGE BUILDING (INSIDE OF A FENCE) FOR INFLAMMABLE MATERIAL, IN THE TOP OF THE CENTER OF A LARGE CONCRETE BASE FOUNDATION WHICH PROJECTS 1 FOOT ABOVE THE GROUND, 270 FEET SOUTH OF THE CENTER LINE OF THE AVENUE, 23.5 FEET SOUTH OF THE NORTHWEST CORNER OF THE FENCE, 2.0 FEET EAST OF THE FENCE, AND ABOUT 3 1/2 FEET LOWER THAN THE STREET. NOTE-- THIS MARK WILL BE DESTROYED BY A FILL, A W.P. FULLER AND COMPANY ENGINEER WILL NOTIFY THE COAST AND GEODETIC SURVEY AS TO WHEN THE FILL WILL BE CONSTRUCTED. HT0632 BM 6=TIDAL MARK http://www.geocaching.com/mark/details.asp?PID=HT0632 BM 6=TIDAL MARK Geocache Geocache BM 6=TIDAL MARK CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>BM 6=TIDAL MARK</h1> <b> PID </b> HT0632 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 40 03. (N) 122 23 33. (W) SCALED <br> <b> NAVD 88 </b> 2.83 (+/-2cm) 9.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.56 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>This Tidal Bench Mark is designated as VM 8104 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 631,260. </td><td> 1,833,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.000 (m) 6.56 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG535690(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: NO 6 1952 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1952 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1.1 MI NE FROM SAN FRANCISCO. 1.1 MILES NORTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT SOUTH SAN FRANCISCO, ABOUT 300 FEET SOUTHEAST OF THE RAILROAD TRACK, ON THE PROPERTY OF THE CONSOLIDATED WESTERN STEEL CORPORATION, IN THE TOP OF THE WEST CORNER OF A CONCRETE FOUNDATION (FORMERLY FOUNDATION FOR PAINT SHOP NO 1, BUILDING IS NOW TORN DOWN), ABOUT 300 FEET SOUTH OF THE NORTH CORNER OF A FENCE, 219 FEET NORTHEAST OF BENCH MARK 7, 150 FEET WEST OF THE WEST END OF DOCK NO 1, 144.0 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE MACHINE SHOP, 93.0 FEET SOUTHEAST OF THE APPROXIMATE CENTER OF THE SOUTHEAST SIDE OF WAREHOUSE NO. 2 (MEASURED FROM DOOR 22), AND ABOUT LEVEL WITH THE GROUND. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION. HT0633 BM 7=TIDAL MARK http://www.geocaching.com/mark/details.asp?PID=HT0633 BM 7=TIDAL MARK Geocache Geocache BM 7=TIDAL MARK CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>BM 7=TIDAL MARK</h1> <b> PID </b> HT0633 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 40 01. (N) 122 23 35. (W) SCALED <br> <b> NAVD 88 </b> 2.74 (+/-2cm) 9.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.56 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>This Tidal Bench Mark is designated as VM 8105 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 631,200. </td><td> 1,833,000. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.909 (m) 6.26 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG535690(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: NO 7 1952 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1952 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1.1 MI NE FROM SAN FRANCISCO. 1.1 MILES NORTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT SOUTH SAN FRANCISCO, ABOUT 200 FEET SOUTHEAST OF THE RAILROAD TRACK, ON THE PROPERTY OF THE CONSOLIDATED WESTERN STEEL CORPORATION, IN THE TOP OF THE NORTH CORNER OF A CONCRETE FOUNDATION (FORMERLY FOUNDATION FOR A VENTILATION STACK OF A CAFETERIA BUILDING, BUILDING IS NOW TORN DOWN), 219 FEET SOUTHWEST OF BENCH MARK 6, 60.4 FEET SOUTHEAST OF THE EAST CORNER OF WAREHOUSE NO. 3, 48.2 FEET SOUTH OF THE SOUTH CORNER OF WAREHOUSE NO 2, 12.7 FEET NORTHEAST OF THE NORTH CORNER OF WAREHOUSE NO 1, AND ABOUT LEVEL WITH THE GROUND. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION. HT0634 BM 8=TIDAL MARK http://www.geocaching.com/mark/details.asp?PID=HT0634 BM 8=TIDAL MARK Geocache Geocache BM 8=TIDAL MARK CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>BM 8=TIDAL MARK</h1> <b> PID </b> HT0634 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN FRANCISCO SOUTH (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 39 59. (N) 122 23 40. (W) SCALED <br> <b> NAVD 88 </b> 3.40 (+/-2cm) 11.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.56 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>This Tidal Bench Mark is designated as VM 8106 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 3 </td><td> 631,140. </td><td> 1,832,880. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.57 (m) 8.4 (f) COMPUTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG534689(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: 8 1952 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1952 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1 MI NE FROM SAN FRANCISCO. 1.0 MILE NORTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT SOUTH SAN FRANCISCO, 0.1 MILE NORTHEAST OF BENCH MARK J 571, INSIDE OF THE NORTHWEST FENCE LINE OF THE CONSOLIDATED WESTERN STEEL CORPORATION PROPERTY, 0.1 MILE NORTHEAST OF THE NORTHEAST END OF THE MAIN FABRICATING SHOP BUILDING, IN THE TOP OF THE SOUTH CORNER OF THE CONCRETE FOUNDATION OF THE THIRD LIGHT POLE SOUTHWEST OF WAREHOUSE NO 3, 43.0 FEET SOUTHEAST OF THE SOUTHEAST RAIL OF THE SOUTHEAST TRACK, 15.8 FEET SOUTHEAST OF THE NORTHEAST ONE OF TWO SWITCH STANDS, 1.9 FEET SOUTHEAST OF A 7-FOOT WIRE FENCE, 1.3 FEET SOUTH OF THE SOUTH EDGE OF A STEEL LIGHT POLE, ABOUT 0.6 FOOT HIGHER THAN THE GROUND, AND ABOUT 3 FEET LOWER THAN THE RAILROAD TRACK. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION. HT3342 BOGESS http://www.geocaching.com/mark/details.asp?PID=HT3342 BOGESS Geocache Geocache BOGESS CADT Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BOGESS</h1> <b> PID </b> HT3342 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> LA HONDA (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 19 11.27462(N) 122 18 47.05210(W) ADJUSTED <br> <b> NAVD 88 </b> 251.1 (meters) 824. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 6.13 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.72 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 592,538.577 1</td><td>839,310.909</td><td> MT </td><td>0.99995733</td><td> -1 ' 06 36.1"</td></tr><tr><td>SPC CA 3 </td><td>1,944,020.31 6</td><td>034,472.54 </td><td> sFT </td><td>0.99995733</td><td> -1 ' 06 36.1"</td></tr><tr><td>UTM 10 </td><td>4,130,570.821 </td><td>560,863.793</td><td> MT </td><td>0.99964563</td><td> +0 ' 24 59.3"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99996574 x 0.99995733 = 0.99992307 <br> <b>UTM 10 </b> 0.99996574 x 0.99964563 = 0.99961138 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> BOGESS AZ MK </td><td>098&deg; 06' 52.6"</td></tr><tr><td>UTM 10 </td><td> BOGESS AZ MK </td><td>096&deg; 35' 17.2"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2873</td><td>BOGESS RM 1 </td><td> 23.477 METERS</td><td>046&deg; 45' </td></tr><tr><td>HT3341</td><td>BOGESS AZ MK </td><td>APPROX. 1.4 KM</td><td>097&deg; 00' 16.5"</td></tr><tr><td>DB2874</td><td>BOGESS RM 2 </td><td> 13.331 METERS</td><td>316&deg; 36' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 19 11.26844(N) 122 18 47.04282(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 19 11.47083(N) 122 18 43.14840(W) AD( ) 2 <br> NGVD 29 (07/19/86) 250.2 (m) 821. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6086430571(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: TOP OF SQUARE CONCRETE MONUMENT <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1975 </td><td>MONUMENTED </td><td>CADT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY CALTRANS 1975 (RDM) THE STATION MARK IS LOCATED ON A GRASSY HILL 2.3 MILES, AIRLINE, WEST OF THE TOWN OF LA HONDA AND IS 0.45 OF A MILE NORTH OF AND ABOUT 600 FEET ABOVE STATE HIGHWAY 84. <p>TO REACH THE STATION MARK FROM THE U.S. POST OFFICE IN LA HONDA, GO SOUTH AND WEST ON STATE HIGHWAY 84 FOR 3.25 MILES TO MILE POST 5.70 AND A GRAVELED DRIVEWAY TO THE RIGHT. TURN RIGHT ONTO THE DRIVEWAY AND GO 0.1 OF A MILE TO A PAVED DRIVEWAY AND A CATTLE GUARD ON THE RIGHT. TURN RIGHT, CROSSING THE CATTLE GUARD, AND FOLLOW PAVED DRIVEWAY FOR 0.25 MILE TO SOME FARM BUILDINGS. ASK PERMISSION TO ENTER HERE. CONTINUE AHEAD ON PAVED DRIVEWAY FOR 0.75 OF A MILE TO THE END OF THE PAVEMENT AND A PLACE WHERE GRAVELED ROADS FORK TO THE RIGHT AND THE LEFT OF THE MAIN GRAVELED ROAD. TAKE THE CENTER ROAD AND GO 0.15 OF A MILE TO A SIDE ROAD TO THE LEFT. TURN LEFT AND GO 0.1 OF A MILE TO A FORK IN THE ROAD. TAKE RIGHT FORK AND GO 0.05 OF A MILE TO THE TOP OF A FLAT HILL AND THE STATION MARK ON THE RIGHT. <p>THE UNDERGROUND STATION MARK IS A STANDARD CADH BRASS DISK STAMPED BOGESS 1975, SET IN A BLOCK OF CONCRETE 3.0 FEET BELOW THE SURFACE OF THE GROUND. <p>THE SURFACE STATION MARK IS AN IDENTICAL DISK TO THE UNDERGROUND, SET IN A 1.0 FOOT DIAMETER CONCRETE CYLINDER THAT PROJECTS 0.3 OF A FOOT AND IS 3 FEET SOUTH OF A METAL WITNESS POST. THE STATION MARK IS NEAR THE SOUTH EDGE OF A FLATTENED BARE HILL APPROXIMATELY 75 FEET SOUTH OF AND 1.5 FEET LOWER THAN THE CENTER OF THE FLATTENED AREA. THE STATION MARK IS ABOUT 65 FEET SOUTH-SOUTHWEST OF A TV ANTENNA AND IS ABOUT 63 FEET SOUTH-SOUTHEAST OF THE CLOSEST CORNER OF A CONCRETE FOUNDATION. <p>REFERENCE MARK 1 IS A STANDARD CADH BRASS DISK, STAMPED BOGESS RM 1 1975, EPOXIED IN A DRILL HOLE IN A 4 FOOT DIAMETER BY 3 FOOT HIGH BOULDER. THE REFERENCE MARK IS 3.5 FEET ABOVE THE STATION MARK. <p>REFERENCE MARK 2 IS A STANDARD CADH BRASS DISK, STAMPED BOGESS RM 2 1975, SET IN A 1.0 FOOT DIAMETER CONCRETE CYLINDER THAT PROJECTS 0.3 OF A FOOT AND IS ABOUT LEVEL WITH THE STATION MARK. <p>THE AZIMUTH MARK IS A STANDARD CADH BRASS DISK STAMPED BOGESS AZI MK 1975, EPOXIED IN A DRILL HOLE IN THE SOUTHWEST CORNER OF A CONCRETE DRAIN INLET BOX WITH A WOODEN TOP THAT COVERS BOTH THE BOX AND THE AZIMUTH MARK. THE AZIMUTH MARK IS 21 FEET SOUTH OF THE CENTERLINE OF STATE HIGHWAY 84 AND IS 200 FEET + OR - WEST OF THE WEST END OF A METAL GUARD RAIL THAT IS ON THE NORTH SIDE OF THE HIGHWAY. THE AZIMUTH MARK IS 4.5 FEET SOUTH OF AND 0.3 OF A FOOT ABOVE THE SOUTH EDGE OF PAVEMENT OF THE HIGHWAY. <p>TO REACH THE AZIMUTH MARK FROM THE INTERSECTION OF STATE HIGHWAY 84 AND THE GRAVELED DRIVEWAY THAT LEADS TO THE STATION MARK, GO NORTH AND EAST ON STATE HIGHWAY 84 FOR 0.85 OF A MILE TO MILE POST 6.60 AND THE AZIMUTH MARK SITE ON THE RIGHT. HT3341 BOGESS AZ MK http://www.geocaching.com/mark/details.asp?PID=HT3341 BOGESS AZ MK Geocache Geocache BOGESS AZ MK CADT Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BOGESS AZ MK</h1> <b> PID </b> HT3341 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> LA HONDA (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 19 05.63777(N) 122 17 49.64852(W) ADJUSTED <br> <b> NAVD 88 </b> 81.3 (meters) 267. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 5.84 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.67 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 592,337.580 1</td><td>840,720.613</td><td> MT </td><td>0.99995754</td><td> -1 ' 06 00.9"</td></tr><tr><td>SPC CA 3 </td><td>1,943,360.88 6</td><td>039,097.54 </td><td> sFT </td><td>0.99995754</td><td> -1 ' 06 00.9"</td></tr><tr><td>UTM 10 </td><td>4,130,407.499 </td><td>562,277.911</td><td> MT </td><td>0.99964778</td><td> +0 ' 25 34.1"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99999236 x 0.99995754 = 0.99994990 <br> <b>UTM 10 </b> 0.99999236 x 0.99964778 = 0.99964014 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 19 05.63164(N) 122 17 49.63950(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 19 05.83374(N) 122 17 45.74653(W) AD( ) 2 <br> NGVD 29 (07/19/86) 80.5 (m) 264. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6227830407(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 0 = UNSPECIFIED SETTING <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1975 </td><td>MONUMENTED </td><td>CADT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY CALTRANS 1975 (RDM) THE AZIMUTH MARK IS LOCATED ON THE TOP OF A CONCRETE DRAIN INLET BOX ON THE SOUTH SIDE OF STATE HIGHWAY 84 AND IS ABOUT 1.5 MILES, AIRLINE, WEST OF THE TOWN OF LA HONDA. <p>TO REACH THE AZIMUTH MARK FROM THE U.S. POST OFFICE IN LA HONDA, GO SOUTH AND WEST ON STATE HIGHWAY 84 FOR 2.4 MILES TO MILE POST 6.60 AND THE AZIMUTH MARK SITE ON THE LEFT. <p>THE AZIMUTH MARK IS A STANDARD CADH BRASS DISK, STAMPED BOGESS AZI MK 1975, EPOXIED IN A DRILL HOLE IN THE SOUTHWEST CORNER OF A CONCRETE DRAIN INLET BOX WITH A WOODEN TOP THAT COVERS BOTH THE BOX AND THE AZIMUTH MARK. THE AZIMUTH MARK IS 21 FEET SOUTH OF THE CENTERLINE OF STATE HIGHWAY 84 AND IS 200 FEET + OR - WEST OF THE WEST END OF A METAL GUARD RAIL THAT IS ON THE NORTH SIDE OF THE HIGHWAY. THE AZIMUTH MARK IS 4.5 FEET SOUTH OF AND 0.3 OF A FOOT ABOVE THE SOUTH EDGE OF PAVEMENT OF THE HIGHWAY. HT2743 BRIDGE http://www.geocaching.com/mark/details.asp?PID=HT2743 BRIDGE Geocache Geocache BRIDGE CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BRIDGE</h1> <b> PID </b> HT2743 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 34 21.30621(N) 122 15 45.52422(W) ADJUSTED <br> <b> NAVD 88 </b> 5. (meters) 16. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.29 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 620,502.429 1</td><td>844,307.758</td><td> MT </td><td>0.99993401</td><td> -1 ' 04 44.9"</td></tr><tr><td>SPC CA 3 </td><td>2,035,765.05 6</td><td>050,866.37 </td><td> sFT </td><td>0.99993401</td><td> -1 ' 04 44.9"</td></tr><tr><td>UTM 10 </td><td>4,158,649.653 </td><td>565,112.134</td><td> MT </td><td>0.99965222</td><td> +0 ' 26 58.7"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000435 x 0.99993401 = 0.99993836 <br> <b>UTM 10 </b> 1.00000435 x 0.99965222 = 0.99965657 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> HIGHWAY </td><td>213&deg; 18' 47.8"</td></tr><tr><td>UTM 10 </td><td> HIGHWAY </td><td>211&deg; 47' 04.2"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2887</td><td>BRIDGE RM 1 </td><td> 6.130 METERS</td><td>033&deg; 45' </td></tr><tr><td>HT2760</td><td>SAN MATEO BRIDGE W TOWER LIGHT </td><td>APPROX. 1.5 KM</td><td>039&deg; 55' 25.9"</td></tr><tr><td>HT2640</td><td>SAN MATEO BRIDGE E TOWER LT </td><td>APPROX. 1.6 KM</td><td>039&deg; 59' 25.6"</td></tr><tr><td>HT2668</td><td>REDWOOD CREEK S SIDE TRANSM TR </td><td>APPROX. 7.7 KM</td><td>135&deg; 39' 41.1"</td></tr><tr><td>HT2667</td><td>REDWOOD CREEK N SIDE TRANSM TR </td><td>APPROX. 7.4 KM</td><td>136&deg; 05' 30.6"</td></tr><tr><td>HT3215</td><td>MAYFIELD RADIO MAST </td><td>APPROX.19.4 KM</td><td>136&deg; 38' 08.5"</td></tr><tr><td>HT2632</td><td>KPO COMMERCIAL RAD STA E TOWER </td><td>APPROX. 3.8 KM</td><td>136&deg; 50' 29.1"</td></tr><tr><td>HT2635</td><td>KPO COMMERCIAL RAD STA W TOWER </td><td>APPROX. 3.8 KM</td><td>139&deg; 15' 21.1"</td></tr><tr><td>HT2643</td><td>TRANSMISSION TOWER 9 </td><td>APPROX. 5.0 KM</td><td>141&deg; 33' 42.1"</td></tr><tr><td>HT2638</td><td>TRANSMISSION TOWER 7 </td><td>APPROX. 2.9 KM</td><td>154&deg; 16' 38.3"</td></tr><tr><td>HT2762</td><td>TRANSMISSION TOWER 8 </td><td>APPROX. 2.6 KM</td><td>157&deg; 14' 15.2"</td></tr><tr><td>HT3268</td><td>REDWOOD CITY TANK </td><td>APPROX. 9.6 KM</td><td>159&deg; 33' 28.6"</td></tr><tr><td>HT3328</td><td>REDWOOD CITY COMMUNITY CROSS </td><td>APPROX.12.9 KM</td><td>183&deg; 42' 48.7"</td></tr><tr><td>HT2747</td><td>BELMONT WATER MAIN VENT SPIPE </td><td>APPROX. 6.8 KM</td><td>185&deg; 43' 26.7"</td></tr><tr><td>HT2746</td><td>HIGHWAY </td><td>APPROX. 3.9 KM</td><td>212&deg; 14' 02.9"</td></tr><tr><td>HT2742</td><td>BRIDGE 1930 RM 2 </td><td> 14.659 METERS</td><td>270&deg; 02' </td></tr><tr><td>HT0580</td><td>GUANO ISLAND RESET </td><td> 34.787 METERS</td><td>334&deg; 25' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 34 21.30049(N) 122 15 45.52089(W) AD(1984.00) 1 <br> <b> NAD 27 </b> 37 34 21.52800(N) 122 15 41.62800(W) AD( ) 1 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6511258650(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1930 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1934 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1939 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1948 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1934 STATION IS ABOUT 15 METERS (49 FEET) SE OF SE CORNER OF TOLLGATES OF SAN MATEO TOLL BRIDGE, ON SHOULDER OF HIGHWAY. MARKED BY A STANDARD STATION DISK IN CONCRETE POST ABOUT 1 FOOT IN DIAMETER AND 1-1/2 FEET LONG. REFERENCE MARK NO. 1 IS STANDARD REFERENCE DISK, IN PROJECTING CONCRETE LEDGE OF TOLLGATE AND 6.13 METERS (20.1 FEET) FROM STATION IN AZIMUTH 213 DEG 50 MIN. REFERENCE MARK NO. 2 IS STANDARD REFERENCE DISK IN LARGE BOULDER, AS DESCRIBED IN NOTE 12C, ON HIGHWAY SHOULDER, AND 14.66 METERS (48.1 FEET) FROM STATION IN AZIMUTH 90 DEG 03 MIN. STATION GUANO ISLAND IS 34.781 METERS (114.11 FEET) FROM STATION IN AZIMUTH 154 DEG 25 MIN. <p> <h2>STATION RECOVERY (1939) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (RRL) STATION LOST. IT WAS REMOVED ABOUT 1936 WHEN A GARAGE WAS BUILT OVER SITE. ONE REFERENCE MARK WAS ALSO REMOVED AT THAT TIME. ONE REFERENCE MARKS REMAINS IN THE CONCRETE LEDGE AT THE SE CORNER OF THE TOLLGATE HOUSE. THIS REFERENCE MARK IS STAMPED NO. 2 BUT THE DESCRIPTION IN S.P. 202 CALLS IT NO. 1. EVIDENTLY THE REFERENCE MARKS WERE REVERSED IN THE DESCRIPTION. <p> <h2>STATION RECOVERY (1948) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948 (EHB) COPIED FROM TIDAL BENCH RECORDS-- <p>REFERENCE MARK 2 IS A BRONZE REFERENCE DISK, STAMPED NO 2 BRIDGE 1930, SET ON LEDGE AROUND BASE OF BUILDING USED AS A STOREHOUSE LOCATED JUST S OF MOST S TOLLGATE AT W APPROACH TO SAN MATEO BRIDGE. HT2742 BRIDGE 1930 RM 2 http://www.geocaching.com/mark/details.asp?PID=HT2742 BRIDGE 1930 RM 2 Geocache Geocache BRIDGE 1930 RM 2 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BRIDGE 1930 RM 2</h1> <b> PID </b> HT2742 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> SAN MATEO (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 34 21.30651(N) 122 15 46.12161(W) ADJUSTED <br> <b> NAVD 88 </b> 4.94 (+/-2cm) 16.2 (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.29 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.54 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <b> VERT ORDER </b> THIRD ? (See Below) <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 620,502.714 1</td><td>844,293.102</td><td> MT </td><td>0.99993401</td><td> -1 ' 04 45.3"</td></tr><tr><td>SPC CA 3 </td><td>2,035,765.99 6</td><td>050,818.29 </td><td> sFT </td><td>0.99993401</td><td> -1 ' 04 45.3"</td></tr><tr><td>UTM 10 </td><td>4,158,649.547 </td><td>565,097.480</td><td> MT </td><td>0.99965220</td><td> +0 ' 26 58.3"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000433 x 0.99993401 = 0.99993834 <br> <b>UTM 10 </b> 1.00000433 x 0.99965220 = 0.99965653 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 34 21.30084(N) 122 15 46.11841(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 34 21.52900(N) 122 15 42.22500(W) AD( ) 2 <br> NGVD 29 (07/19/86) 4.12 (m) 13.5 (f) LEVELING 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG6509758650(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1930 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1968 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1968 (RMS) THE MARK WAS DESTROYED DURING ROAD CONSTRUCTION IN 1967. <p>AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3-1/2 MILES EAST OF SAN MATEO. HT2771 BRUNO http://www.geocaching.com/mark/details.asp?PID=HT2771 BRUNO Geocache Geocache BRUNO CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BRUNO</h1> <b> PID </b> HT2771 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> MONTARA MOUNTAIN (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 36 22.77731(N) 122 25 43.29553(W) ADJUSTED <br> <b> NAVD 88 </b> 184.3 (meters) 605. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 1.54 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.60 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 624,535.616 1</td><td>829,720.142</td><td> MT </td><td>0.99993235</td><td> -1 ' 10 50.9"</td></tr><tr><td>SPC CA 3 </td><td>2,048,997.27 6</td><td>003,006.83 </td><td> sFT </td><td>0.99993235</td><td> -1 ' 10 50.9"</td></tr><tr><td>UTM 10 </td><td>4,162,291.068 </td><td>550,426.375</td><td> MT </td><td>0.99963132</td><td> +0 ' 20 55.1"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99997620 x 0.99993235 = 0.99990855 <br> <b>UTM 10 </b> 0.99997620 x 0.99963132 = 0.99960753 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> MILLBRAE </td><td>094&deg; 40' 41.6"</td></tr><tr><td>UTM 10 </td><td> MILLBRAE </td><td>093&deg; 08' 55.6"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2899</td><td>BRUNO RM 1 </td><td> 18.930 METERS</td><td>008&deg; 15' </td></tr><tr><td>HT2780</td><td>MILLBRAE </td><td>APPROX. 3.0 KM</td><td>093&deg; 29' 50.7"</td></tr><tr><td>DB2900</td><td>BRUNO RM 2 </td><td> 12.048 METERS</td><td>125&deg; 55' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 36 22.76962(N) 122 25 43.29522(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 36 23.00400(N) 122 25 39.39000(W) AD( ) 2 <br> NGVD 29 (07/19/86) 183.4 (m) 602. (f) VERT ANG <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5042662291(NAD 83) <br>MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1957 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1958 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1960 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1957 (RLE) THE STATION IS LOCATED IN THE SOUTHWEST EDGE OF SAN BRUNO, ON A HIGH HILL BETWEEN SAN BRUNO AND SAN ANDREAS LAKE. IT IS ABOUT 100 FEET SOUTH OF THE HIGHEST PART OF THE HILL, 14 FEET WEST OF THE CENTER OF A TRACK ROAD AND 7 FEET EAST OF THE STEEP SIDE OF THE HILL. THE MARK IS SET FLUSH WITH THE SURFACE OF THE GROUND AND IS STAMPED BRUNO 1957. <p>REFERENCE MARK NUMBER ONE IS 6 FEET EAST OF THE CENTER OF A TRACK ROAD AND 4 FEET WEST OF A LINE OF TREES. THE MARK IS SET FLUSH WITH THE SURFACE OF THE GROUND AND IS STAMPED BRUNO NO 1 1957. <p>REFERENCE MARK NUMBER TWO IS 5 FEET EAST OF THE CENTER OF A TRACK ROAD. THE MARK IS SET FLUSH WITH THE SURFACE OF THE GROUND AND IS STAMPED BRUNO NO 2 1957. <p>NO SUITABLE PLACE FOR A AZIMUTH MARK. <p>TO REACH THE STATION FROM THE CENTER OF THE OVERPASS AT U.S. HIGHWAY NO. 101 BYPASS AND SAN BRUNO AVENUE GO WESTERLY ON SAN BRUNO AVENUE FOR 0.7 MILE TO EL CAMINO REAL, (U.S. HIGHWAY NO. 101) CONTINUE ON SAN BRUNO AVENUE FOR 0.6 MILE TO A 4 LANE BOULEVARD, CONTINUE ON SAN BRUNO AVENUE FOR 0.7 MILE TO CRESTMOOR DRIVE, TURN LEFT ON CRESTMOOR DRIVE AND GO SOUTH FOR 0.8 MILE TO THE END OF CRESTMOOR DRIVE AND A DIRT ROAD LEADING SOUTHERLY, CONTINUE SOUTHERLY ON DIRT ROAD FOR 0.2 MILE TO THE STATION ON THE RIGHT AS DESCRIBED. <p>HEIGHT OF LIGHT ABOVE STATION MARK 1.0 METERS. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JCM) STATION RECOVERED IN GOOD CONDITION. THE STATION IS NOW 157 FEET SOUTH SOUTHWEST OF A UPRIGHT METAL TANK, THAT IS ABOUT 14 BY 20 FEET. <p>TO REACH THE STATION FROM THE SOUTHERN PACIFIC RAILWAY DEPOT AT SAN BRUNO. GO WEST ON SAN BRUNO AVENUE FOR 1.6 MILES TO CRESTMOOR DRIVE. THIS IS 0.3 MILE EAST OF THE INTERSECTION OF SAN BRUNO AVENUE AND SKYLINE DRIVE. GO SOUTH ON CRESTMOOR DRIVE FOR 0.8 MILE TO IT END, THEN FOLLOW A GRAVELED ROAD, CONTINUEING SOUTH, UP GRADE FOR 0.15 MILE TO THE METAL TANK ON THE LEFT, EAST. THE STATION IS 157 FEET SOUTH OF THE SOUTH SIDE OF THE TANK AND 14 FEET WEST OF THE CENTER OF THE TRACK ROAD. <p> <h2>STATION RECOVERY (1960) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (IRR) THE STATION MARK AND REFERENCE MARKS WERE REMOVED PRIOR TO CONSTRUCTION WORK FOR THE JUNIPERO SERRA FREEWAY DURING WHICH THE ENTIRE HILL ON WHICH THE MARKS WERE LOCATED WAS GRADED DOWN ABOUT 100 FEET. STATION LOST. HT3300 BUETRO 2 http://www.geocaching.com/mark/details.asp?PID=HT3300 BUETRO 2 Geocache Geocache BUETRO 2 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>BUETRO 2</h1> <b> PID </b> HT3300 <br> <b> STATE/COUNTY</b> CA/SAN MATEO <br> <b> USGS QUAD </b> FRANKLIN POINT (1991) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 13 37.80602(N) 122 20 35.54486(W) ADJUSTED <br> <b> NAVD 88 </b> 282.5 (meters) 927. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 8.10 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -33.02 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 3 </td><td> 582,312.766 1</td><td>836,437.819</td><td> MT </td><td>0.99997071</td><td> -1 ' 07 42.5"</td></tr><tr><td>SPC CA 3 </td><td>1,910,471.13 6</td><td>025,046.41 </td><td> sFT </td><td>0.99997071</td><td> -1 ' 07 42.5"</td></tr><tr><td>UTM 10 </td><td>4,120,275.414 </td><td>558,264.900</td><td> MT </td><td>0.99964182</td><td> +0 ' 23 50.5"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99996085 x 0.99997071 = 0.99993156 <br> <b>UTM 10 </b> 0.99996085 x 0.99964182 = 0.99960268 <br> <p> <table border=1><tr><td> </td><td> Primary Azimuth Mark </td><td>Grid Az</td></tr><tr><td>SPC CA 3 </td><td> NURS </td><td>238&deg; 58' 35.6"</td></tr><tr><td>UTM 10 </td><td> NURS </td><td>237&deg; 27' 02.6"</td></tr> </table> <p> <table border=1><tr><td>PID </td><td>Reference Object </td><td> Distance </td><td>Geod. Az </td></tr><tr><td>DB2906</td><td>BUETRO 2 RM 3 </td><td> 5.034 METERS</td><td>014&deg; 13' </td></tr><tr><td>DB2907</td><td>BUETRO 2 RM 4 </td><td> 4.955 METERS</td><td>109&deg; 08' </td></tr><tr><td>DB2908</td><td>BUETRO 2 RM 5 </td><td> 4.950 METERS</td><td>111&deg; 27' </td></tr><tr><td>DB2904</td><td>BUETRO 2 RM 1 </td><td> 12.080 METERS</td><td>216&deg; 17' </td></tr><tr><td>HT3316</td><td>NURS </td><td>APPROX. 4.3 KM</td><td>237&deg; 50' 53.1"</td></tr><tr><td>DB2909</td><td>BUETRO 2 RM 6 </td><td> 10.744 METERS</td><td>284&deg; 24' </td></tr><tr><td>DB2905</td><td>BUETRO 2 RM 2 </td><td> 9.065 METERS</td><td>321&deg; 10' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 13 37.79893(N) 122 20 35.53341(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 37 13 38.00000(N) 122 20 31.63400(W) AD( ) 2 <br> NGVD 29 (07/19/8