Benchmark file generated by bmgpx bmgpx by Ron Parker bmgpx@parkrrrr.com HT0154 0+47.81 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0154 0+47.81 EBMUD Geocache Geocache 0+47.81 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>0+47.81 EBMUD</h1> <b> PID </b> HT0154 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 24. (N) 122 11 53. (W) SCALED <br> <b> NAVD 88 </b> 115.19 (+/-2cm) 377.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value.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> 655,620. </td><td> 1,850,650. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 114.344 (m) 375.14 (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Superseded values are not recommended for survey control.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 See file dsdata.txt to determine how the superseded data were derived.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: 10SEG705939(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE MANHOLE <br>STAMPING: 0+47.81 <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>EBMUD</td></tr><tr><td>1935 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>1962 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 0.5 MI NW FROM ORINDA. 0.5 MILE NORTHWEST ALONG SAN PABLO CREEK ROAD FROM ORINDA, CONTRA COSTA COUNTY, AT THE FAST BAY MUNICIPAL UTILITY DISTRICT ORINDA FILTER PLANT, 300 FEET NORTHEAST OF THE ROAD, 13-1/2 FEET SOUTH OF THE SOUTHWEST CORNER OF THE CONCRETE SCREENING CHAMBER, AND IN THE TOP OF A CONCRETE MANHOLE. AN EAST BAY MUNICIPAL UTILITY DISTRICT STANDARD DISK, STAMPED 0+47.81. NOTE-- THERE IS NEW CONCRETE OVER THE MANHOLE WHERE THE MARK WAS DESCRIBED. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 MARK NOT FOUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HT0111 1 C OF WC http://www.geocaching.com/mark/details.asp?PID=HT0111 1 C OF WC Geocache Geocache 1 C OF WC CA4070 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1 C OF WC</h1> <b> PID </b> HT0111 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 24. (N) 122 03 51. (W) SCALED <br> <b> NAVD 88 </b> 50.51 (+/-2cm) 165.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.13 (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> 657,260. </td><td> 1,862,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 49.696 (m) 163.04 (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: 10SEG822958(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>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>CA4070</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT WALNUT CREEK. AT WALNUT CREEK, 225 FEET NORTHEAST OF THE CENTER OF THE INTERSECTION OF NORTH MAIN STREET AND YGNACIO VALLEY ROAD, ALONG THE CENTER LINE OF THE ROAD, IN A WELL, AND SET IN THE TOP OF A CONCRETE POST 1 FOOT UNDERGROUND. AN 8-INCH CAST IRON PLATE SCRIBED CITY MONUMENT COVERS THE MARK. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) MARK NOT FOUND. HT0116 1 CC CO http://www.geocaching.com/mark/details.asp?PID=HT0116 1 CC CO Geocache Geocache 1 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1 CC CO</h1> <b> PID </b> HT0116 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 55 35. (N) 122 03 44. (W) SCALED <br> <b> NAVD 88 </b> 32.92 (+/-2cm) 108.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.11 (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> 659,450. </td><td> 1,862,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 32.108 (m) 105.34 (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: 10SEG824980(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: CONTROL MON CC CO <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-013</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.8 MI N FROM WALNUT CREEK. 1.8 MILES NORTH ALONG NORTH MAIN STREET FROM THE CITY HALL AT WALNUT CREEK, 84 FEET WEST OF THE CENTER OF THE INTERSECTION OF GEARY ROAD, 3 1/2 FEET SOUTH OF THE CENTER LINE OF GEARY ROAD, 1 1/2 FEET UNDERGROUND, AND SET IN THE TOP OF A CONCRETE POST. NOTE-- ACCESS TO THE MARK MAY BE HAD THROUGH A 12-INCH CAST IRON COVER BEARING THE WORD MONUMENT. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) MARK NOT FOUND. JS1854 1 GPCC http://www.geocaching.com/mark/details.asp?PID=JS1854 1 GPCC Geocache Geocache 1 GPCC GPCC Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1 GPCC</h1> <b> PID </b> JS1854 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> HONKER BAY (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 51. (N) 121 59 16. (W) SCALED <br> <b> NAVD 88 </b> 3.19 (+/-2cm) 10.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 672,780. </td><td> 1,869,420. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.412 (m) 7.91 (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: 10SEH888115(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING FOUNDATION <br>STAMPING: NO 1 <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>GPCC</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1964 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1.9 MI E FROM PORT CHICAGO. 1.8 MILE EAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT PORT CHICAGO, THENCE 0.1 MILE NORTH ALONG NICHOLS ROAD, AT THE GENERAL CHEMICAL DIVISION OF ALLIED CHEMICAL AND DYE CORPORATION, IN THE TOP OF A LEDGE AT THE SOUTHEAST CORNER OF THE CONCRETE FOUNDATION OF THE ENGINEERING BUILDING, 1.1 FEET NORTHEAST OF THE SOUTHEAST CORNER OF THE LEDGE, 0.9 FOOT EAST OF THE EAST BRICK WALL, AND ABOUT 0.3 FOOT HIGHER THAN AN ASPHALT DRIVEWAY. <p> <h2>STATION RECOVERY (1964) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1964 RECOVERED IN GOOD CONDITION. HS3771 1 USBR http://www.geocaching.com/mark/details.asp?PID=HS3771 1 USBR Geocache Geocache 1 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1 USBR</h1> <b> PID </b> HS3771 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 58 34. (N) 121 38 22. (W) SCALED <br> <b> NAVD 88 </b> 3.52 (+/-2cm) 11.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.37 (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> 664,430. </td><td> 1,899,900. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.80 (m) 9.2 (f) COMPUTED 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: 10SFH194040(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: COTTONWOOD TREE <br>STAMPING: R SL 1 <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>BOR</td></tr><tr><td>1964 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1964 2.1 MI E FROM KNIGHTSEN. 0.3 MILES NORTHWEST ALONG THE ATCHISON, TOPEKA AND SANTA FE RAILROAD FROM THE STATION AT KNIGHTSEN, THENCE 0.2 MILES NORTH ALONG KNIGHTSEN ROAD, THENCE 1.5 MILES EAST ALONG TULE LANE, THENCE ABOUT 100 YARDS EAST ALONG A TRACK ROAD ON THE NORTH LEVEE OF ROCK SLOUGH, 0.15 MILES SOUTHEAST OF U.S. BUREAU OF RECLAMATION FISH SCREEN ACROSS THE CONTRA COSTA CANAL, ABOUT 100 YARDS EAST OF THE CONTRA COSTA CANAL INTAKE AT A U.S.B.R. GAGING STATION, 23 FEET SOUTH OF THE CENTER OF THE LEVEE ROAD, 8.6 FEET WEST OF THE CENTER OF THE DOOR TO THE GAGE HOUSE, 14.7 FEET NORTHEAST OF THE WITNESS POST WEDGED IN A COTTONWOOD TREE AND PAINTED USBR B.M. NO. 1, ABOUT LEVEL WITH THE ROAD, AND SCREWED IN THE TOP OF A 3-INCH IRON PIPE ENCASED IN CONCRETE AND PROJECTING 0.4 FEET. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3447 1 USBR http://www.geocaching.com/mark/details.asp?PID=HS3447 1 USBR Geocache Geocache 1 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1 USBR</h1> <b> PID </b> HS3447 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 01. (N) 121 33 30. (W) SCALED <br> <b> NAVD 88 </b> 3.25 (+/-2cm) 10.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.22 (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> 646,680. </td><td> 1,906,820. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.53 (m) 8.3 (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: 10SFG268864(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TRASH COLLECTING RACK HEAD WAL <br>STAMPING: 1 <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>BOR</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 0.8 MI SW FROM CLIFTON COURT FERRY. 0.8 MILE SOUTHWEST ALONG HERDLYN ROAD FROM THE CLIFTON COURT FERRY OVER OLD RIVER, AT THE SOUTHEAST CORNER OF CLIFTON COURT TRACT, AT THE FISH COLLECTING FACILITIES OF THE DELTA-MENDOTA CANAL, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE HEAD WALL OF THE TRASH COLLECTING RACK, 2.3 FEET NORTHEAST OF THE NORTHEAST RAIL OF THE TRASH RAKE, AND ABOUT 1/2 FOOT HIGHER THAN THE CONCRETE FLOOR. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 RECOVERED IN GOOD CONDITION. HT0172 10 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0172 10 EBMUD Geocache Geocache 10 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>10 EBMUD</h1> <b> PID </b> HT0172 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> OAKLAND EAST (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 48. (N) 122 09 57. (W) SCALED <br> <b> NAVD 88 </b> 191.97 (+/-2cm) 629.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.17 (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> 648,910. </td><td> 1,853,370. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 191.112 (m) 627.01 (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: 10SEG734872(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>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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 3.4 MI W FROM MORAGA. 1.9 MILES SOUTHWEST ALONG CANYON ROAD FROM THE POST OFFICE AT MORAGA, THENCE 1.5 MILES NORTHWEST ALONG PINEHURST ROAD, 118 FEET SOUTHWEST OF AND ACROSS THE ROAD FROM THE CANYON STORE, 40.7 FEET SOUTHWEST OF THE CENTERLINE OF THE ROAD, 27.2 FEET WEST OF BENCH MARK T 571 (EBMUD), 13.7 FEET SOUTHWEST OF A FENCE LINE, 1.0 FOOT NORTHEAST OF A WOODEN WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND. JT0382 10 USN http://www.geocaching.com/mark/details.asp?PID=JT0382 10 USN Geocache Geocache 10 USN DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>10 USN</h1> <b> PID </b> JT0382 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 45. (N) 122 01 46. (W) SCALED <br> <b> NAVD 88 </b> 3.69 (+/-2cm) 12.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 672,660. </td><td> 1,865,760. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.90 (m) 9.5 (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: 10SEH851113(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: CT 41 <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>DOD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 0.5 MI W FROM PORT CHICAGO. ABOUT 0.5 MILE WEST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT PORT CHICAGO, BETWEEN THE TRACKS AND GATE 16 TO THE U.S. NAVAL MAGAZINE, 180.4 FEET SOUTH OF THE CENTER OF THE GATE, 39.5 FEET WEST OF A POWER LINE POLE, 33.0 FEET EAST OF THE CENTER LINE OF A ROAD INTO GATE 16, 22.3 FEET NORTH OF THE CENTER LINE OF AN ASPHALT ROAD PARALLELING THE TRACKS, IN THE TOP OF A CONCRETE POST ABOUT 0.2 FOOT BELOW THE SURFACE OF THE PAVEMENT AND PROTECTED BY A 2-BY-12 INCH CAST IRON COVER. NOTE-- REPORTED IN SEPTEMBER 1956 THAT THE BOLT IS STAMPED CT 41. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 RECOVERED IN GOOD CONDITION. HT0910 102.30 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0910 102.30 EBMUD Geocache Geocache 102.30 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>102.30 EBMUD</h1> <b> PID </b> HT0910 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 57 07. (N) 122 19 58. (W) SCALED <br> <b> NAVD 88 </b> 32.02 (+/-2cm) 105.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.26 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 662,720. </td><td> 1,838,940. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 31.197 (m) 102.35 (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: 10SEH586006(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 102.30 <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>EBMUD</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </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 PABLO. AT SAN PABLO, IN R4W T1N, ALONG SAN PABLO AVENUE, AT THE Y JUNCTION OF DAM ROAD AND RIVERSIDE AVENUE, AT BRIDGE 28-01 OVER WILDCAT CREEK, IN THE TOP OF THE NORTH END OF THE NORTHEAST CONCRETE SIDEWALK, 31 1/2 FEET NORTHEAST OF THE CENTER LINE OF SAN PABLO AVENUE, 3.3 EAST OF THE EAST EDGE OF A 4-INCH STEEL POLE SUPPORTING A TRAFFIC SIGNAL, 0.9 FOOT SOUTHWEST OF THE NORTHWEST CORNER OF THE NORTHEAST CONCRETE GUARDRAIL, AND ABOUT 1/2 FOOT HIGHER THAN SAN PABLO AVENUE. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) MARK NOT FOUND. JT0390 11 USE http://www.geocaching.com/mark/details.asp?PID=JT0390 11 USE Geocache Geocache 11 USE DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>11 USE</h1> <b> PID </b> JT0390 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 53. (N) 122 01 15. (W) SCALED <br> <b> NAVD 88 </b> 3.25 (+/-2cm) 10.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 672,890. </td><td> 1,866,520. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.46 (m) 8.1 (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: 10SEH859115(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>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>DOD</td></tr><tr><td>1964 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1964 AT PORT CHICAGO. AT PORT CHICAGO, ALONG THE SOUTHERN PACIFIC RAILROAD, 97.7 FEET NORTH OF THE NORTHWEST CORNER OF THE RAILROAD STATION, 43.2 FEET NORTH OF THE NORTH RAIL OF THE MAIN TRACKS, 19.7 FEET SOUTH OF THE CENTER LINE OF A PAVED COUNTY ROAD, 8 1/2 FEET WEST OF A TELEGRAPH POLE, 30.8 FEET SOUTHWEST OF AN AUTOMATIC RAILROAD SIGNAL NO. B-41.2, 1.6 FEET EAST OF A POINT IN LINE WITH THE EAST WALL OF THE RAILROAD STATION, ABOUT LEVEL WITH THE TRACKS AND THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) RECOVERED IN GOOD CONDITION. HS3769 11.19 USBR http://www.geocaching.com/mark/details.asp?PID=HS3769 11.19 USBR Geocache Geocache 11.19 USBR BOR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <h1>11.19 USBR</h1> <b> PID </b> HS3769 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 58 37.53958(N) 121 38 31.53731(W) ADJUSTED <br> <b> NAVD 88 </b> 4.21 (meters) 13.8 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1997.30 <br> <b> X </b> -2,640,879.648 (meters) COMP <br> <b> Y </b> -4,285,630.538 (meters) COMP <br> <b> Z </b> 3,903,422.873 (meters) COMP <br> <b> LAPLACE CORR</b> 0.72 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.13 (meters) (07/10/98) GPS OBS <br> <b> GEOID HEIGHT</b> -32.37 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in July 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 orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques. The vertical order pertains to the NGVD 29 superseded value. <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> 664,542.721 1</td><td>899,664.725</td><td> MT </td><td>0.99993693</td><td> -0 ' 41 57.2"</td></tr><tr><td>SPC CA 3 </td><td>2,180,253.91 6</td><td>232,483.35 </td><td> sFT </td><td>0.99993693</td><td> -0 ' 41 57.2"</td></tr><tr><td>UTM 10 </td><td>4,204,143.312 </td><td>619,260.356</td><td> MT </td><td>0.99977518</td><td> +0 ' 50 08.5"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000441 x 0.99993693 = 0.99994134 <br> <b>UTM 10 </b> 1.00000441 x 0.99977518 = 0.99977959 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 37 58 37.53916(N) 121 38 31.53764(W) AD(1997.30) 1 <br> ELLIP H (05/14/98) -28.04 (m) GP(1997.30) 3 1 <br> NGVD 29 (??/??/92) 3.421 (m) 11.22 (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: 10SFH1926004143(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONTRA COSTA CANAL FISH SCREEN <br>STAMPING: 11.19 <br>MARK LOGO: BOR <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 - October 28, 1997 <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>BOR</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19971028</td><td>GOOD </td><td>BOR</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1963 2 MI E FROM KNIGHTSEN. 0.3 MILE NORTHWEST ALONG THE ATCHINSON, TOPEKA AND SANTA FE RAILROAD FROM THE STATION AT KNIGHTSEN, THENCE 0.2 MILE NORTH ALONG KNIGHTSEN AVENUE, THENCE 1.5 MILES EAST ALONG TULE LANE, THENCE ABOUT 140 YARDS NORTHWEST ALONG THE CONTRA COSTA CANAL, AT THE CONTRA COSTA CANAL FISH SCREEN, IN THE TOP OF THE SOUTHEAST END OF THE NORTHEAST CONCRETE ABUTMENT FOR THE HEADGATE STRUCTURE, 68-1/2 FEET SOUTHWEST OF THE DIRT ROAD ON THE NORTHEAST LEVEE, 3.6 FEET SOUTHEAST OF THE SOUTHEAST END OF A GATE ACROSS THE NORTHEAST END OF THE SOUTHEAST WALKWAY, 1.1 FEET NORTH OF AN IRON GUARD RAIL POST, AND ABOUT LEVEL WITH THE LEVEE ROAD. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1997) </h2> <p>RECOVERY NOTE BY US BUREAU OF RECLAMATION 1997 (DWS) THE STATION WAS RECOVERED AND A COMPLETE NEW DESCRIPTION FOLLOWS. THE STATION IS ABOUT 4.2 MI (6.8 KM) NORTHEAST OF BRENTWOOD, ABOUT 4.15 MI (6.68 KM) EAST-SOUTHEAST OF OAKLEY, AND ABOUT 2.7 MI (4.3 KM) SOUTH OF BETHEL ISLAND, AT THE START OF THE CONTRA COSTA CANAL OFF OF ROCK SLOUGH. TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 4 AND CYPRESS ROAD IN THE CITY OF OAKLEY, EAST OF ANTIOCH, GO EAST ON CYPRESS ROAD FOR 2.12 MI (3.41 KM) PAST THE INTERSECTION OF JERSEY ISLAND ROAD ON THE LEFT TO THE CONTRA COSTA CANAL. TURN RIGHT AND GO SOUTHEAST, THROUGH TWO LOCKED GATES, ALONG THE NORTHEAST SIDE OF THE CANAL FOR ABOUT 1.33 MI (2.14 KM) TO THE CONTRA COSTA CANAL TRASH RACK/INTAKE STRUCTURE AND THE STATION ON THE RIGHT. THE STATION IS A BUREAU OF RECLAMATION SURVEY DISK CEMENTED FLUSH ON THE CONCRETE CURBING ON THE SOUTHEAST END OF THE NORTHEAST ABUTMENT OF THE STRUCTURE, ABOUT 68.5 FT (20.9 M) SOUTHWEST OF THE DIRT ROAD ON THE NORTHEAST LEVEE, 55.2 FT (16.8 M) SOUTHWEST OF THE SOUTHEAST CORNER OF THE STRUCTURE, IN THE CORNER OF THE CURB, 1.64 FT (0.50 M) NORTHWEST OF THE UPSTREAM FACE OF THE CURB, 1.45 FT (0.44 M) NORTHEAST OF THE SOUTHWEST FACE, ABOUT 1.35 FT (0.41 M) ABOVE THE GROUND, 1.0 FT (0.3 M) NORTH OF THE CORNER POST OF THE RAILING, AND ABOUT A FOOT FROM A CARSONITE WITNESS POST. THE STATION WAS OCCUPIED AS PART OF THE SAN JOAQUIN-SACRAMENTO RIVER DELTA GPS/VERTICAL PROJECT. HS3746 11.26 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3746 11.26 EBMUD Geocache Geocache 11.26 EBMUD EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <h1>11.26 EBMUD</h1> <b> PID </b> HS3746 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 56 21.83948(N) 121 36 53.90457(W) ADJUSTED <br> <b> NAVD 88 </b> 4.21 (meters) 13.8 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 2000.86 <br> <b> X </b> -2,640,199.863 (meters) COMP <br> <b> Y </b> -4,289,071.661 (meters) COMP <br> <b> Z </b> 3,900,124.071 (meters) COMP <br> <b> LAPLACE CORR</b> 0.55 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.07 (meters) (11/27/02) GPS OBS <br> <b> GEOID HEIGHT</b> -32.34 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> B <br> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in November 2002. 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. The vertical order pertains to the NGVD 29 superseded value. <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> 660,330.632 1</td><td>901,997.334</td><td> MT </td><td>0.99993456</td><td> -0 ' 40 57.4"</td></tr><tr><td>SPC CA 3 </td><td>2,166,434.75 6</td><td>240,136.25 </td><td> sFT </td><td>0.99993456</td><td> -0 ' 40 57.4"</td></tr><tr><td>UTM 10 </td><td>4,199,995.853 </td><td>621,704.546</td><td> MT </td><td>0.99978243</td><td> +0 ' 51 06.0"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000440 x 0.99993456 = 0.99993896 <br> <b>UTM 10 </b> 1.00000440 x 0.99978243 = 0.99978683 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 37 56 21.83814(N) 121 36 53.90361(W) AD(1997.30) 1 <br> ELLIP H (07/10/98) -28.11 (m) GP(1997.30) 4 1 <br> <b> NAD 83(1992)</b> 37 56 21.83774(N) 121 36 53.90393(W) AD(1997.30) 1 <br> ELLIP H (05/14/98) -28.02 (m) GP(1997.30) 3 1 <br> NGVD 29 (??/??/92) 3.420 (m) 11.22 (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: 10SFG2170599996(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: LIGHT STRUCTURE <br>STAMPING: STA P 2689 00.63 F ELEV 11.26 <br>MARK LOGO: EBMUD <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 - August 17, 2004 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19970814</td><td>GOOD </td><td>BOR</td></tr><tr><td>20010114</td><td>GOOD </td><td>FRAME</td></tr><tr><td>20040817</td><td>GOOD </td><td>BESTOR</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 2.9 MI W FROM ORWOOD. 2.9 MILES WEST ALONG THE ATCHISON, TOPEKA, AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, 3.5 MILES SOUTHEAST OF KNIGHTSEN, ABOUT 85 YARDS SOUTH OF THE TRACK, AT THE POINT WHERE THE NORTH PIPE OF EAST BAY MUNICIPAL UTILITY DISTRICT 60-INCH TWIN PIPES GOES UNDERGROUND, IN THE TOP OF THE CENTER OF THE CONCRETE COLLAR, 49 1/2 FEET NORTH OF THE CENTER OF A T JUNCTION OF ORWOOD ROAD AND A TRACK ROAD LEADING SOUTH, 61.2 FEET NORTHWEST OF A TELEPHONE POLE, ABOUT 3 FEET HIGHER THAN THE ROAD, AND SET ABOUT 3 FEET LOWER THAN THE TRACK. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1997) </h2> <p>RECOVERY NOTE BY US BUREAU OF RECLAMATION 1997 (DWS) THE STATION WAS RECOVERED AND A COMPLETE NEW DESCRIPTION FOLLOWS. THE STATION IS ALONG THE MOKELUMNE AQUEDUCT PIPELINE OF THE EAST BAY MUNICIPAL UTILITY DISTRICT, ABOUT 4.2 MI (6.8 KM) EAST OF BRENTWOOD AND ABOUT 3.5 MI (5.6 KM) SOUTHEAST OF KNIGHTSEN. TO REACH THE STATION FROM BRENTWOOD, GO EAST ON CHESTNUT STREET FOR ABOUT 2.8 MI (4.5 KM) TO THE T-INTERSECTION OF THE BYRON HIGHWAY. TURN LEFT AND GO NORTH FOR ABOUT 0.5 MI (0.8 KM) TO A SIDE ROAD RIGHT, ORWOOD ROAD. TURN RIGHT AND GO EAST ON ORWOOD ROAD FOR 1.0 MI (1.6 KM) TO BIXLER ROAD ON THE LEFT, A SOUTH JOG IN THE ROAD, AND BIXLER ROAD ON THE RIGHT. CONTINUE EAST ON ORWOOD ROAD FOR 0.46 MI (0.74 KM) TO THE STATION ON THE LEFT, WHERE TWO 54-INCH MOKELUMNE AQUEDUCT PIPES GO UNDERGROUND ACROSS FROM A RESIDENCE AT 4401 ORWOOD ROAD. THE STATION IS ABOUT 315 FT (96.0 M) WEST OF A LARGE PIPELINE GATEHOUSE, 255 FT (77.7 M) SOUTH OF THE RAILROAD TRACKS, IN THE CENTER OF THE TOP OF THE CONCRETE HEADWALL 1-FT THICK AND 21-FT LONG AROUND THE SOUTHERLY OF TWO AQUEDUCT PIPES, 49 FT (14.9 M) NORTH OF THE CENTERLINE OF ORWOOD ROAD, 17.8 FT (5.4 M) EAST-SOUTHEAST OF THE END OF A 4.7 FT (1.4 M) HIGH WALL EXTENDING SOUTH 4.0 FT (1.2 M) FROM THE SOUTHEAST CORNER OF A 9 BY 13-FT CONCRETE UNDERGROUND PIPELINE ACCESS STRUCTURE OVER THE NORTH PIPE, 2 FT (0.6 M) HIGHER THAN THE LEVEL OF ORWOOD ROAD, AND 1.5 FT (0.5 M) HIGHER THAN THE TOP OF THE PIPELINE. THE STATION WAS OCCUPIED AS PART OF THE SAN JOAQUIN-SACRAMENTO RIVER DELTA GPS/VERTICAL PROJECT. <p> <h2>STATION RECOVERY (2001) </h2> <p>RECOVERY NOTE BY FRAME SURVEYING AND MAPPING 2001 (JHF) RECOVERED AS DESCRIBED. <p> <h2>STATION RECOVERY (2004) </h2> <p>RECOVERY NOTE BY BESTOR ENGINEERS INCORPORATED 2004 (DT) RECOVERED IN GOOD CONDITION. HS3614 123.11 USBR http://www.geocaching.com/mark/details.asp?PID=HS3614 123.11 USBR Geocache Geocache 123.11 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>123.11 USBR</h1> <b> PID </b> HS3614 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 58 56. (N) 121 48 20. (W) SCALED <br> <b> NAVD 88 </b> 38.31 (+/-2cm) 125.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.23 (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> 665,300. </td><td> 1,885,310. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 37.555 (m) 123.21 (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: 10SFH048045(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE SIPHON <br>STAMPING: 123.11 <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>BOR</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 1.4 MI S FROM ANTIOCH. 0.15 MILE SOUTH ALONG A STREET FROM THE CROSSING OF THE SOUTHERN PACIFIC RAILROAD AT ANTIOCH, THENCE 0.15 MILE SOUTHWEST ALONG STATE HIGHWAY 4 AND 24 FREEWAY, THENCE 1.1 MILES SOUTH ALONG LONE TREE WAY, IN R2E T2N S31, AT THE CROSSING OF CONTRA COSTA CANAL, IN TOP OF THE CENTER OF THE EAST CONCRETE HEAD WALL OF CONCRETE SIPHON 10.45, 32 1/2 FEET EAST OF THE CENTER LINE OF THE WAY, 4.6 FEET EAST OF A FENCE, AND ABOUT 1/2 FOOT LOWER THAN THE WAY. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. JT0489 12.63 SHELL OIL CO http://www.geocaching.com/mark/details.asp?PID=JT0489 12.63 SHELL OIL CO Geocache Geocache 12.63 SHELL OIL CO SHELL Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>12.63 SHELL OIL CO</h1> <b> PID </b> JT0489 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BENICIA (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 01 25. (N) 122 07 41. (W) SCALED <br> <b> NAVD 88 </b> 4.62 (+/-2cm) 15.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.11 (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> 670,340. </td><td> 1,857,070. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 3.81 (m) 12.5 (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: 10SEH765087(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: VIADUCT <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>SHELL</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 0.4 MI E FROM MARTINEZ. 0.4 MILE EAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT MARTINEZ, IN R2W T2N S18, IN THE TOP OF THE NORTHEAST CONCRETE BASE FOR THE NORTHEAST STEEL LEG OF THE SHELL OIL COMPANY VIADUCT OVER THE RAILROAD TRACK, 46.4 FEET NORTHWEST OF THE NORTHWEST CORNER OF RAILROAD BRIDGE 32.18, 30.2 FEET NORTH OF THE NORTH RAIL OF THE NORTH SIDE TRACK, ABOUT 1 1/2 FOOT LOWER THAN THE TRACK, AND MARKED BY THE RED NUMBERS 12.63. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 RECOVERED IN GOOD CONDITION. HT0108 134.19 C OF WC http://www.geocaching.com/mark/details.asp?PID=HT0108 134.19 C OF WC Geocache Geocache 134.19 C OF WC CA4070 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>134.19 C OF WC</h1> <b> PID </b> HT0108 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 58. (N) 122 03 34. (W) SCALED <br> <b> NAVD 88 </b> 41.70 (+/-2cm) 136.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.13 (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> 656,460. </td><td> 1,862,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 40.887 (m) 134.14 (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: 10SEG826950(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: 134.19 <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>CA4070</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT WALNUT CREEK. AT WALNUT CREEK, IN THE CENTER OF THE T JUNCTION OF NORTH BROADWAY AND CYPRESS AVENUE, IN THE TOP OF THE CONCRETE PAVEMENT (ALSO THE TOP FOR A 40-FOOT WIDE CONCRETE BOX CULVERT FOR WALNUT CREEK WHICH FLOWS UNDER BROADWAY). HS3728 1357 USBR http://www.geocaching.com/mark/details.asp?PID=HS3728 1357 USBR Geocache Geocache 1357 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1357 USBR</h1> <b> PID </b> HS3728 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 44. (N) 121 42 06. (W) SCALED <br> <b> NAVD 88 </b> 4.85 (+/-2cm) 15.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.38 (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> 666,660. </td><td> 1,894,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.122 (m) 13.52 (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: 10SFH139061(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: 1357 <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>BOR</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 0.5 MI E FROM OAKLEY. 0.4 MILES EAST ALONG THE ATCHISON, TOPEKA AND SANTA FE RAILROAD FROM THE STATION AT OAKLEY, THENCE 0.1 MILES NORTH ALONG A GRAVELED ROAD ON THE WEST LEVEE OF THE CONTRA COSTA CANAL, AT THE CONTRA COSTA CANAL PUMPING PLANT NO. 1, 23.2 FEET SOUTHEAST OF THE NORTH CORNER OF THE BUILDING, IN THE TOP OF THE NORTHEAST END OF THE NORTHWEST CONCRETE RETAINING WALL, 47 FEET EAST OF THE CENTER LINE OF THE GRAVEL ROAD, 1.3 FEET NORTHEAST OF THE NORTHEAST EDGE OF THE NORTHWEST STEEL LADDER, AND SET ABOUT LEVEL WITH THE GRAVEL ROAD. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3724 139.51 USBR http://www.geocaching.com/mark/details.asp?PID=HS3724 139.51 USBR Geocache Geocache 139.51 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>139.51 USBR</h1> <b> PID </b> HS3724 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 43. (N) 121 50 51. (W) SCALED <br> <b> NAVD 88 </b> 40.28 (+/-2cm) 132.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.18 (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> 666,800. </td><td> 1,881,650. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 39.522 (m) 129.67 (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: 10SFH011059(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 139.51 <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>BOR</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 2.5 MI SW FROM ANTIOCH. 0.7 MILE WEST ALONG WEST FOURTH STREET FROM THE POST OFICE AT ANTIOCH, THENCE 1.8 MILES SOUTHWEST ALONG SOMERSVILLE ROAD, IN R1E T2N, IN THE NORTHEAST QUARTER OF SECTION 27, 0.85 MILE SOUTHWEST OF THE CROSSING OF STATE HIGHWAY 4 AND 24, AT A CONCRETE BRIDGE OVER THE CONTRA COSTA CANAL, IN THE TOP OF THE NORTHEAST END OF THE NORTHWEST CONCRETE HEAD WALL, 14 1/2 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 8.5 FEET SOUTH OF THE SOUTHWEST END OF A STEEL GATE, AND ABOUT 1 FOOT HIGHER THAN THE ROAD. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0107 142.29 C OF WC http://www.geocaching.com/mark/details.asp?PID=HT0107 142.29 C OF WC Geocache Geocache 142.29 C OF WC CA4070 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>142.29 C OF WC</h1> <b> PID </b> HT0107 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 52. (N) 122 03 31. (W) SCALED <br> <b> NAVD 88 </b> 44.17 (+/-2cm) 144.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.13 (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> 656,270. </td><td> 1,862,930. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 43.353 (m) 142.23 (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: 10SEG827948(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: 142.29 <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>CA4070</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT WALNUT CREEK. AT WALNUT CREEK, AT THE CENTER OF THE INTERSECTION OF NORTH BROADWAY AND WALKER AVENUE, IN THE TOP OF THE CONCRETE PAVEMENT WHICH ALSO SERVES AS THE TOP OF A CONCRETE BOX CULVERT FOR UNDERGROUND WALNUT CREEK. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. JT0389 15 USE http://www.geocaching.com/mark/details.asp?PID=JT0389 15 USE Geocache Geocache 15 USE DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>15 USE</h1> <b> PID </b> JT0389 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 03 20. (N) 122 02 21. (W) SCALED <br> <b> NAVD 88 </b> 3.75 (+/-2cm) 12.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 673,750. </td><td> 1,864,930. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.97 (m) 9.7 (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: 10SEH842124(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>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>DOD</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT PORT CHICAGO. AT PORT CHICAGO, IN R2W T2N S6, AT THE U.S. NAVAL MAGAZINE, 0.85 MILE NORTHWEST ALONG JOHNSON ROAD FROM GATE 16, AT THE NORTHWEST END OF THE ROAD, 34 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD, 22.3 FEET SOUTH OF THE SOUTH CORNER OF A BARGE PIER, 15.6 FEET NORTHWEST OF A FENCE AROUND BUILDING A-5, 0.4 FOOT SOUTHWEST OF THE SOUTHWEST EDGE OF A SMALL FRAME BUILDING, AND SCREWED ON TOP OF A 1 1/4-INCH GALVANIZED IRON PIPE WHICH PROJECTS 0.5 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 RECOVERED IN GOOD CONDITION. HS3416 15 USE http://www.geocaching.com/mark/details.asp?PID=HS3416 15 USE Geocache Geocache 15 USE DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>15 USE</h1> <b> PID </b> HS3416 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 23. (N) 121 33 35. (W) SCALED <br> <b> NAVD 88 </b> 4.62 (+/-2cm) 15.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.30 (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 11856 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> 660,310. </td><td> 1,906,850. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 3.91 (m) 12.8 (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: 10SFH265001(NAD 83) <br>MARKER: B = BOLT <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>DOD</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 AT ORWOOD. AT ORWOOD, AT THE SOUTHEAST CORNER OF PALM TRACT, AT THE WEST END OF THE ATCHISON, TOPEKA AND SANTA FE RAILWAY DRAWBRIDGE OVER OLD RIVER, IN THE TOP OF THE NORTHEAST CORNER OF THE WEST CONCRETE PIER OF THE DRAW SPAN, 8.7 FEET NORTH OF THE NORTH RAIL, 2.0 FEET NORTHEAST OF THE NORTHEAST CORNER OF A STEEL PLLATE, AND ABOUT 4 1/2 FEET LOWER THAN THE TRACK. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3747 16.38 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3747 16.38 EBMUD Geocache Geocache 16.38 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>16.38 EBMUD</h1> <b> PID </b> HS3747 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 22. (N) 121 36 35. (W) SCALED <br> <b> NAVD 88 </b> 5.72 (+/-2cm) 18.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.34 (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> 660,330. </td><td> 1,902,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.009 (m) 16.43 (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: 10SFH221000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: STA P 2673 63.37 F 2673 63.37 ELEV 16.38 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 2.6 MI W FROM ORWOOD. 2.6 MILES WEST ALONG THE ATCHINSON, TOPEKA AND SANTA FE RAILROAD TRACK FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, AT THE WERNER SIDING, ABOUT 100 YARDS SOUTHEAST OF MILEPOLE 1139, 258 FEET SOUTH OF THE CENTER OF THE CROSSING OF A GRAVELED ROAD, AT THE CROSSING OF THE GRAVELED ROAD OVER THE EDMUD 60-INCH TWIN PIPES, IN THE TOP OF THE APPROXIMATE CENTER OF THE WEST CONCRETE HEADWALL OF THE NORTH PIPE, 76.1 FEET NORTH OF THE NORTHEAST CORNER OF THE ORWOOD ROAD BRIDGE OVER INDIAN SLOUGH, 87 FEET NORTH OF THE CENTERLINE OF ORWOOD ROAD, 13 FEET WEST OF THE CENTERLINE OF THE GRAVELED ROAD, 38.9 FEET NORTHEAST OF A VALVE ON TOP OF THE NORTH PIPE, ABOUT 2 FEET LOWER THAN THE ROAD, AND 1.6 FEET BELOW THE SURFACE OF THE ROAD SHOUDER. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3608 165 USGS http://www.geocaching.com/mark/details.asp?PID=HS3608 165 USGS Geocache Geocache 165 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>165 USGS</h1> <b> PID </b> HS3608 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BYRON HOT SPRINGS (1968) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 51 48. (N) 121 40 41. (W) SCALED <br> <b> NAVD 88 </b> 50.87 (+/-2cm) 166.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.18 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 651,960. </td><td> 1,896,350. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 50.121 (m) 164.44 (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: 10SFG162914(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: 165 CAL 1910 22 <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>1910 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 2.2 MI W FROM BYRON. 2.2 MILES WEST ALONG CAMINO DIABLO FROM THE CROSSING OF THE SOUTHERN PACIFIC COMPANY RAILROAD AT BYRON, IN R3E T1S S7, AT THE T JUNCTION OF FENCES, 28 1/2 FEET NORTH OF THE CENTER LINE OF CAMINO DIABLO, 107 FEET EAST OF THE CENTER OF THE Y JUNCTION OF A GRAVELED ROAD LEADING SOUTHWEST, 3 FEET WEST OF A FENCE CORNER POST, 0.4 FOOT SOUTH OF A FENCE, 1.0 FOOT WEST OF A WITNESS POST, ABOUT 2 FEET HIGHER THAN CAMINO DIABLO, AND RIVETED ON TOP OF A 3 1/2-INCH IRON PIPE PROJECTING 0.5 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. JT0517 17 USGS http://www.geocaching.com/mark/details.asp?PID=JT0517 17 USGS Geocache Geocache 17 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>17 USGS</h1> <b> PID </b> JT0517 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BENICIA (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 46. (N) 122 11 00. (W) SCALED <br> <b> NAVD 88 </b> 6.00 (+/-2cm) 19.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 672,920. </td><td> 1,852,260. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 5.18 (m) 17.0 (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: 10SEH716112(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: 17.011 <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>USGS</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 AT PORT COSTA. AT PORT COSTA, NEAR THE SOUTHERN PACIFIC COMPANY RAILROAD STATION, DIRECTLY ACROSS MAIN STREET FROM THE BURLINGTON HOTEL, AT A LARGE CONCRETE BUILDING USED FOR A POST OFFICE AND FIRE STATION, SET VERTICALLY IN THE NORTHWEST CONCRETE WALL, 37.6 FEET SOUTHWEST OF THE NORTH CORNER OF THE BUILDING, 29.0 FEET EAST OF THE CENTER LINE OF MAIN STREET, 13.2 FEET SOUTHWEST OF THE SOUTHWEST EDGE OF THE ENTRANCE TO THE POST OFFICE, AND SET 2.9 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. JS1753 181 S USE http://www.geocaching.com/mark/details.asp?PID=JS1753 181 S USE Geocache Geocache 181 S USE DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>181 S USE</h1> <b> PID </b> JS1753 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH NORTH (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 01 02. (N) 121 48 41. (W) SCALED <br> <b> NAVD 88 </b> 3.00 (+/-2cm) 9.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.30 (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> 669,190. </td><td> 1,884,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 2.26 (m) 7.4 (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: 10SFH043083(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: 181 S <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>DOD</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 AT ANTIOCH. AT ANTIOCH, 0.3 MILE EAST ALONG THE ATCHISON, TOPEKA AND SANTA FE RAILROAD FROM THE STATION, AT THE NORTH END OF E STREET, AT SIGNAL 11512, 8.2 FEET SOUTH OF THE SOUTH RAIL, 32 FEET WEST OF THE EXTENDED CENTER LINE OF THE STREET, 7.1 FEET EAST OF THE NORTHEAST CORNER OF THE CONCRETE FOUNDATION SUPPORTING THE SIGNAL, 3.0 FEET NORTHEAST OF THE NORTH LEG OF A STEEL LADDER ATTACHED TO THE SIGNAL, 21 1/2 FEET NORTH-NORTHWEST OF TELEGRAPH POLE 7J, 2.5 FEET EAST OF A WITNESS POST, ABOUT 1/2 FOOT LOWER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST 0.2 FOOT UNDERGROUND. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. JS1754 184 S USE http://www.geocaching.com/mark/details.asp?PID=JS1754 184 S USE Geocache Geocache 184 S USE DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>184 S USE</h1> <b> PID </b> JS1754 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH NORTH (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 58. (N) 121 48 19. (W) SCALED <br> <b> NAVD 88 </b> 3.69 (+/-2cm) 12.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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>This Tidal Bench Mark is designated as VM 8524 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> 669,060. </td><td> 1,885,390. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 2.95 (m) 9.7 (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: 10SFH048082(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: 184 S <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>DOD</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 0.6 MI E FROM ANTIOCH. 0.6 MILE EAST ALONG THE ATCHISON, TOPEKA AND SANTA FE RAILWAY FROM THE STATION ANTIOCH, AT THE EAST END OF A LONG WOODEN TRESSEL OVER A PORTION OF THE SAN JOAQUIN RIVER, 16.5 FEET NORTH OF THE NORTH RAIL, 26 1/2 FEET EAST OF THE NORTHEAST CORNER OF THE TRESSEL, 9 FEET NORTHEAST OF A POLE SUPPORTING A KEEP OFF SIGN, 2.0 FEET SOUTH OF A WITNESS POST, ABOUT 1/2 FOOT LOWER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.1 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS5106 1854=WEIDEMANN http://www.geocaching.com/mark/details.asp?PID=HS5106 1854=WEIDEMANN Geocache Geocache 1854=WEIDEMANN CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1854=WEIDEMANN</h1> <b> PID </b> HS5106 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> DUBLIN (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 44 17.88860(N) 121 59 41.59439(W) ADJUSTED <br> <b> NAVD 88 </b> 564.8 (meters) 1853. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> -0.15 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -32.23 (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 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> 638,480.149 1</td><td>868,250.083</td><td> MT </td><td>0.99992920</td><td> -0 ' 54 54.8"</td></tr><tr><td>SPC CA 3 </td><td>2,094,746.96 6</td><td>129,417.15 </td><td> sFT </td><td>0.99992920</td><td> -0 ' 54 54.8"</td></tr><tr><td>UTM 10 </td><td>4,177,255.236 </td><td>588,560.028</td><td> MT </td><td>0.99969660</td><td> +0 ' 36 54.8"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 0.99991644 x 0.99992920 = 0.99984565 <br> <b>UTM 10 </b> 0.99991644 x 0.99969660 = 0.99961307 <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> WEIDEMANN AZ MK </td><td>136&deg; 47' 44.3"</td></tr><tr><td>UTM 10 </td><td> WEIDEMANN AZ MK </td><td>135&deg; 15' 54.7"</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>DB3980</td><td>WEIDEMANN RM 1 </td><td> 14.958 METERS</td><td>038&deg; 59' </td></tr><tr><td>DB3979</td><td>WEIDEMANN AZ MK </td><td> </td><td>135&deg; 52' 49.5"</td></tr><tr><td>HS5112</td><td>WEIDEMANN RM 2 </td><td> 16.073 METERS</td><td>174&deg; 11' </td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 37 44 17.88580(N) 121 59 41.59075(W) AD(1984.00) 1 <br> <b> NAD 27 </b> 37 44 18.14400(N) 121 59 37.73500(W) AD( ) 1 <br> NGVD 29 (07/19/86) 563.9 (m) 1850. (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: 10SEG8856077255(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <br>SETTING: 0 = UNSPECIFIED SETTING <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1947 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1951 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (WMG) THE STATION IS A STANDARD U.S.G.S. BRONZ DISK SET IN A BOULDER, STAMPED ELEV ELEVATION ABOVE SEA LEVEL V.A. 1854. IT IS ON THE SOUTH END OF THE HIGHEST POINT OF DIVIDE RIDGE, ABOUT 4 MILES NW OF DUBLIN, 5 MILES S. OF DANVILLE, AND 6 MILES NE. OF HAYWARD, NEAR OR ON THE ALAMEDA-CONTRA COSTA COUNTY LINE. THE STATION IS 250 FEET SSW OF THE ACTUAL SUMMIT. <p>REFERENCE MARK NO. 1 (NOTE 12A) IS STAMPED WEIDEMANN USGS NO 1 1947 AND IS FLUSH WITH THE SURFACE. IT IS ON THE NORTHEASTERN EDGE OF THE RIDGE. <p>REFERENCE MARK NO 2 (NOTE 12A) IS STAMPED WEIDEMANN USGS NO 2 1947 AND PROJECTS 4 INCHES ABOVE THE SURFACE. IT IS 50 FEET WSW OF THE RIDGE LINE. <p>THE AZIMUTH MARK IS STAMPED WEIDEMANN USGS 1947 AND IS SET IN OUTCROPPING OF BEDROCK. IT IS ON THE NW POINT OF A SMALL NW-SE RIDGE, 100 YARDS WEST OF A STONE FENCE. <p>TO REACH THE STATION FROM THE JUNCTION OF REDWOOD CANYON RD. AND U.S. HIGHWAY 50 IN CASTRO VALLEY, GO EAST ON U.S. 50 FOR 3.3 MILES TO THE EDEN CANYON ROAD ON THE LEFT. TURN LEFT ON THE EADEN CANYON ROAD AND GO FOR 1.15 MILES TO THE DAVILLA BROS. RANCH AND ETT. FROM THE WEST SIDE OF THE TOOL SHED, PACK NORTHERLY UP AN OLD ROAD, THENCE NORTHEASTERLY, CONTINUEING ON OLD ROAD UP STEEP HILLSIDE TO SADDLE ON TOP (TO REACH THE AZIMUTH MARK FROM HERE, PACK EASTERLY ABOUT 300 YARDS TO POINT OF SMALL RIDGE AND MARK IN ROCK) HERE LEAVE OLD ROAD AND PACK NORTHWESTERLY TO HIGHEST POINT AND STATION. <p> <h2>STATION RECOVERY (1951) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1951 (JCE) THE STATION WAS FOUND DESTROYED. A NEW STATION MARK, STAMPED WEIDEMANN 2 1951, WAS SET NEAR THE LOCATION OF THE ORIGINAL MARK. AN ADDITIONAL REFERENCE MARK, STAMPED WEIDEMANN 2 NO 3 1951, WAS ESTABLISHED. <p>SEE NEW DESCRIPTION. HT0109 2 C OF WC http://www.geocaching.com/mark/details.asp?PID=HT0109 2 C OF WC Geocache Geocache 2 C OF WC CA4070 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2 C OF WC</h1> <b> PID </b> HT0109 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 02. (N) 122 03 30. (W) SCALED <br> <b> NAVD 88 </b> 41.82 (+/-2cm) 137.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.13 (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> 656,580. </td><td> 1,862,960. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 41.01 (m) 134.5 (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: 10SEG827951(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: 2 <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>CA4070</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>POOR </td><td>USPSQD</td></tr><tr><td>1997 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT WALNUT CREEK. AT WALNUT CREEK, AT THE JUNCTION OF LINCOLN AVENUE AND LIVE OAK WAY, AT A CONCRETE BRIDGE OVER WALNUT CREEK, IN THE TOP OF THE NORTHEAST CONCRETE SIDEWALK, 18 FEET NORTHEAST OF THE CENTER LINE OF THE AVENUE, 3.6 FEET SOUTHEAST OF THE NORTHWEST END OF THE SIDEWALK, AND ABOUT 1 FOOT HIGHER THAN THE STREET. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK RECOVERED IN POOR CONDITION. <p> <h2>STATION RECOVERY (1997) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1997 RECOVERED IN GOOD CONDITION. HT0080 2 CCC http://www.geocaching.com/mark/details.asp?PID=HT0080 2 CCC Geocache Geocache 2 CCC CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2 CCC</h1> <b> PID </b> HT0080 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 33. (N) 122 10 15. (W) SCALED <br> <b> NAVD 88 </b> 200.27 (+/-2cm) 657.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,850. </td><td> 1,853,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 199.42 (m) 654.3 (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: 10SEG729942(NAD 83) <br>MARKER: Z = SEE DESCRIPTION <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>CA-013</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.8 MI NE FROM ORINDA VILLAGE. 1.0 MILE NORTHEAST ALONG CAMINO SOBRANTE FROM THE Y JUNCTION OF ORINDA WAY AT ORINDA VILLAGE, THENCE 0.2 MILE NORTHEAST ALONG LAS CASCADES, THENCE 0.05 MILE EAST ALONG LAS AROMAS, THENCE 0.1 MILE EAST ALONG A TRACK ROAD, THENCE 0.3 MILE SOUTHEAST ALONG EAST ALTARINDA DRIVE, THENCE 0.1 MILE SOUTH ALONG SAINT STEPHENS DRIVE, 3.1 MILES WEST OF LA FAYETTE, NEAR THE JUNCTION OF STATE HIGHWAY 24, AT THE T JUNCTION OF CHARLES HILL ROAD, IN THE CENTER OF THE JUNCTION, SET IN THE TOP OF A CONCRETE POST ABOUT 1 FOOT UNDERGROUND, AND COVERED BY AN 8-INCH CAST IRON COVER SCRIBED CCC MONUMENT. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. JT0498 2 KV http://www.geocaching.com/mark/details.asp?PID=JT0498 2 KV Geocache Geocache 2 KV RBNF Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2 KV</h1> <b> PID </b> JT0498 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BENICIA (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 01 06. (N) 122 08 02. (W) SCALED <br> <b> NAVD 88 </b> 6.19 (+/-2cm) 20.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.11 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 669,760. </td><td> 1,856,540. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.37 (m) 17.6 (f) COMPUTED 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: 10SEH760082(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: K V 1904 2 <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>1904 </td><td>MONUMENTED </td><td>RBNF</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19941106</td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT MARTINEZ. AT MARTINEZ, R2W T2N S18, 34 FEET SOUTHEAST OF THE INTERSECTION OF COURT AND MAIN STREETS, 54.1 FEET EAST OF AND ACROSS MAIN STREET FROM GAZETTE TRIANGULATION STATION, 7.0 FEET EAST OF THE EAST CURB OF MAIN STREET, 4.5 FEET SOUTH OF THE SOUTH CURB OF COURT STREET, 3.4 FEET NORTHWEST OF THE NORTHWEST CORNER OF THE RICHMOND-MARTINEZ TITLE COMPANY BUILDING, AND FLUSH WITH THE CONCETE SIDEWALK. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1994) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1994 MARK NOT FOUND. HS3726 20 B USGS http://www.geocaching.com/mark/details.asp?PID=HS3726 20 B USGS Geocache Geocache 20 B USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>20 B USGS</h1> <b> PID </b> HS3726 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 49. (N) 121 42 37. (W) SCALED <br> <b> NAVD 88 </b> 6.62 (+/-2cm) 21.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.38 (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> 666,820. </td><td> 1,893,700. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.890 (m) 19.32 (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: 10SFH132062(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: 20 B 6 1907 <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>1907 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 AT OAKLEY. AT OAKLEY, AT THE ATCHISON, TOPEKA AND SANTA FE RAILROAD STATION, AT THE WEST EDGE OF THE STATION PLATFORM, 35.3 FEET SOUTH OF THE SOUTH RAIL OF THE MAIN TRACK, 25.7 FEET EAST OF THE EXTENDED WEST CURB LINE OF FOURTH STREET, 11.4 FEET WEST OF THE NORTHWEST CORNER OF THE STATION BUILDING, 10.8 FEET WEST OF THE WEST SIDE OF THE STATION BUILDNG, 9.8 FEET NORTH OF A TELEPHONE POLE, ABOUT 1/2 FOOT LOWER THAN THE TRACK, AND RIVETED TO THE TOP OF A 3-1/2-INCH IRON PIPE 0.3 FOOT BELOW THE ASPHALTED SURFACE OF THE GROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3652 21 USGS http://www.geocaching.com/mark/details.asp?PID=HS3652 21 USGS Geocache Geocache 21 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>21 USGS</h1> <b> PID </b> HS3652 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 51 00. (N) 121 37 21. (W) SCALED <br> <b> NAVD 88 </b> 7.71 (+/-2cm) 25.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.23 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 650,420. </td><td> 1,901,220. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 6.984 (m) 22.91 (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: 10SFG211900(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: 21 CAL 23 23 1910 <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>1910 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 1.6 MI SE FROM BYRON. 1.6 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE POST OFFICE AT BYRON, IN R3E T1S, IN THE NORTHEAST QUARTER OF SECTION 15, AT THE CROSSING OF BYRON HOT SPRINGS ROAD (CROSSING B 68. 42.0 FEET NORTHEAST OF THE NORTHEAST RAIL, 30 FEET WEST OF THE CENTER OF THE T JUNCTION OF BYRON HIGHWAY AND BYRON HOT SPRINGS ROAD LEADING SOUTH, 21 1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 2 1/2 FEET SOUTHWEST OF POWER LINE POLE 3/3, 1.6 FEET SOUTHEAST OF A WITNESS POST, ABOUT 5 FEET LOWER THAN THE TRACK, ABOUT 1 FOOT HIGHER THAN THE HIGHWAY, AND FASTENED TO THE TOP OF AN IRON PIPE WHICH PROJECTS 1.4 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3760 23.656 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3760 23.656 EBMUD Geocache Geocache 23.656 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>23.656 EBMUD</h1> <b> PID </b> HS3760 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 24. (N) 121 38 27. (W) SCALED <br> <b> NAVD 88 </b> 7.96 (+/-2cm) 26.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.34 (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> 660,430. </td><td> 1,899,730. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 7.233 (m) 23.73 (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: 10SFH194000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BOX MANHOLE <br>STAMPING: STA P 2763+68.00 ELEV 23.656 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 2.7 MI SE FROM KNIGHTSEN. 1.8 MILES SOUTHEAST ALONG THE ATCHINSON, TOPEKA AND SANTA FE RAILROAD TRACK FROM THE STATION AT KNIGHTSEN, THENCE 0.9 MILE SOUTH ALONG BYRON HIGHWAY, AT THE JUNCTION OF ORWOOD ROAD, AT THE CROSSING OF THE EAST BAY MUNICIPAL UTILITY DISTRICT 60-INCH TWIN PIPES, SET IN THE APPROXIMATE CENTER OF THE WEST SIDE OF CONCRETE BOX MANHOLE NO. 154, 62 FEET SOUTH OF THE CENTERLINE OF ORWOOD ROAD, 59 FEET EAST OF THE CENTERLINE OF BYRON HIGHWAY, 30.2 FEET EAST OF THE NORTH GATE POST OF A STEEL GATE, 28.2 FEET EAST OF A FENCE LINE, AND ABOUT LEVEL WITH THE ROAD. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3727 2460 USBR http://www.geocaching.com/mark/details.asp?PID=HS3727 2460 USBR Geocache Geocache 2460 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2460 USBR</h1> <b> PID </b> HS3727 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 42. (N) 121 42 08. (W) SCALED <br> <b> NAVD 88 </b> 8.21 (+/-2cm) 26.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.38 (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> 666,600. </td><td> 1,894,410. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 7.484 (m) 24.55 (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: 10SFH139060(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 0 = UNSPECIFIED SETTING <br>STAMPING: 2460 <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>BOR</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 0.4 MI E FROM OAKLEY. 0.4 MILES EAST ALONG THE ATCHISON, TOPEKA ANMD SANTA FE RAILROAD FROM THE STATION AT OAKLEY, AT THE CONTRA COSTA CANAL SIPHON NO. A 1146 UNDER THE TRACKS, 53 FEET SOUTHEAST OF THE CENTER OF A GRAVELED ROAD CROSSING, 49.4 FEET SOUTH OF THE SOUTH TRACK (MAIN), 38 FEET EAST OF THE CENTER LINE OF THE LEVEE ROAD, AND SET ABOUT 2 FEET HIGHER THAN THE TRACKS. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HT0938 25+28.58 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0938 25+28.58 EBMUD Geocache Geocache 25+28.58 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>25+28.58 EBMUD</h1> <b> PID </b> HT0938 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> SAN QUENTIN (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 55 54. (N) 122 24 04. (W) SCALED <br> <b> NAVD 88 </b> 14.61 (+/-2cm) 47.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.29 (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> 660,590. </td><td> 1,832,890. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 13.80 (m) 45.3 (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: 10SEG526984(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: 25+28.58 <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>EBMUD</td></tr><tr><td>1956 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT POINT RICHMOND. AT POINT RICHMOND, CONTRA COSTA COUNTY, NEAR THE JUNCTION OF THE SAN REFAEL FERRY ROAD AND THE WINE HAVEN ROAD, 74 FEET SOUTHWEST OF THE AAA SIGN AT THE JUNCTION, 40 FEET NORTHWEST OF THE CENTERLINE OF THE FERRY ROAD, AND 15 FEET SOUTHEAST OF THE WINE HAVEN ROAD. AN EAST BAY MUNICIPAL UTILITIES DISTRICT STANDARD DISK, STAMPED 25+28.58 AND SET IN THE TOP OF A 4-1/2 INCH CONCRETE-FILLED PIPE SET IN CONCRETE, PROJECTING 1 INCH ABOVE GROUND. NOTE-- THE MARK IS BELIEVED TO HAVE BEEN BURIED OR DESTROYED DURING THE CONSTRUCTION OF THE FREEWAY APPROACHES. JT0383 26 USN http://www.geocaching.com/mark/details.asp?PID=JT0383 26 USN Geocache Geocache 26 USN DOD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>26 USN</h1> <b> PID </b> JT0383 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 43. (N) 122 01 54. (W) SCALED <br> <b> NAVD 88 </b> 6.09 (+/-2cm) 20.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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 1003 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> 672,600. </td><td> 1,865,570. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.30 (m) 17.4 (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: 10SEH849112(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE SIDEWALK <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>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 AT PORT CHICAGO. CT 26 AT PORT CHICAGO, ABOUT 0.6 MILE WEST OF THE SOUTHERN PACIFIC RAILROAD STATION, AT THE U.S. NAVAL MAGAZINE, AT THE NORTH END OF THE TAYLOR AVENUE BRIDGE OVER THE TRACKS, IN THE TOP OF THE NORTH END OF THE WEST CONCRETE SIDEWALK, 15.5 FEET WEST OF THE CENTER LINE OF THE AVENUE, AND 1.0 FOOT HIGHER THAN THE AVENUE. NOTE-- REPORTED IN AUGUST 1956 THAT THE BOLT IS STAMPED CT 26. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 RECOVERED IN GOOD CONDITION. HS3753 2.67 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3753 2.67 EBMUD Geocache Geocache 2.67 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2.67 EBMUD</h1> <b> PID </b> HS3753 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 21. (N) 121 34 38. (W) SCALED <br> <b> NAVD 88 </b> 1.52 (+/-2cm) 5.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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> 660,270. </td><td> 1,905,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 0.815 (m) 2.67 (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: 10SFH250000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: STA P 2579 75.31 F 2579 75.18 ELEV 2.67 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 0.8 MI W FROM ORWOOD. 0.8 MILES WEST ALONG THE ATCHISON, TOPEKA, AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, ABOUT 60 YARDS SOUTH OF AND ACROSS A SLOUGH FROM ELECTRIC SIGNAL NO. 11371, AT THE CROSSING OF EAST CONCRETE HEADWALL OF THE NORTH PIPE, 34.4 FEET EAST OF AND ACROSS THE ROAD FROM THE SOUTHEAST CORNER OF A CONCRETE BOX MANHOLE NO. 143, 37.4 FEET EAST OF AND ACROSS THE ROAD FROM BM 6.40 (EBMUD), 15 1/2 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, AND SET ABOUT LEVEL WITH THE ROAD. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. JT0530 27 CC CO http://www.geocaching.com/mark/details.asp?PID=JT0530 27 CC CO Geocache Geocache 27 CC CO CA-013 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <h1>27 CC CO</h1> <b> PID </b> JT0530 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BENICIA (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 38 03 08.79763(N) 122 13 21.52161(W) ADJUSTED <br> <b> NAVD 88 </b> 18.55 (meters) 60.9 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 2000.86 <br> <b> X </b> -2,681,427.314 (meters) COMP <br> <b> Y </b> -4,254,304.489 (meters) COMP <br> <b> Z </b> 3,910,021.109 (meters) COMP <br> <b> LAPLACE CORR</b> 2.84 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -13.48 (meters) (11/27/02) GPS OBS <br> <b> GEOID HEIGHT</b> -32.12 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> B <br> <b> VERT ORDER </b> FIRST CLASS I (See Below) <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in November 2002. 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. The vertical order pertains to the NGVD 29 superseded value. <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> 673,684.956 1</td><td>848,820.833</td><td> MT </td><td>0.99994297</td><td> -1 ' 03 16.8"</td></tr><tr><td>SPC CA 3 </td><td>2,210,248.06 6</td><td>065,673.02 </td><td> sFT </td><td>0.99994297</td><td> -1 ' 03 16.8"</td></tr><tr><td>UTM 10 </td><td>4,211,918.978 </td><td>568,201.577</td><td> MT </td><td>0.99965729</td><td> +0 ' 28 45.0"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000212 x 0.99994297 = 0.99994509 <br> <b>UTM 10 </b> 1.00000212 x 0.99965729 = 0.99965940 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 38 03 08.79484(N) 122 13 21.52051(W) AD(1997.30) 1 <br> ELLIP H (07/10/98) -13.53 (m) GP(1997.30) 4 1 <br> <b> NAD 83(1992)</b> 38 03 08.79448(N) 122 13 21.52045(W) AD(1997.30) 1 <br> ELLIP H (03/20/98) -13.44 (m) GP(1997.30) 3 2 <br> NGVD 29 (??/??/92) 17.80 (m) 58.4 (f) COMPUTED 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: 10SEH6820211919(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: SET IN SIDEWALK <br>STAMPING: 27 <br>MARK LOGO: CGS <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 - January 14, 2001 <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-013</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19970402</td><td>GOOD </td><td>NGS</td></tr><tr><td>20010114</td><td>GOOD </td><td>FRAME</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT CROCKETT. AT CROCKETT, ALONG POMONA STREET, IN R3W T2N S5, 61 FEET NORTHEAST OF THE CENTER OF THE T JUNCTION OF 3RD AVENUE, IN THE TOP OF THE SOUTHEAST CORNER OF A CONCRETE SIDEWALK LEADING NORTH TO JOHN SWETT UNION HIGH SCHOOL, 1.0 FEET NORTH OF THE NORTH CURB OF THE STREET, 0.3 FOOT WEST OF AN IRON PIPE GUARDRAIL, AND ABOUT LEVEL WITH THE STREET. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1997) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (JDD) RECOVERED AS DESCRIBED. <p> <h2>STATION RECOVERY (2001) </h2> <p>RECOVERY NOTE BY FRAME SURVEYING AND MAPPING 2001 (JHF) THE STATION WAS RECOVERED. IT IS 1.1 M (3.6 FT) WEST OF A CORRUGATED STEEL GUARD RAIL. JS4675 275 276 http://www.geocaching.com/mark/details.asp?PID=JS4675 275 276 Geocache Geocache 275 276 NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>275 276</h1> <b> PID </b> JS4675 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> HONKER BAY (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 38 02 20.25127(N) 121 53 12.85869(W) ADJUSTED <br> <b> NAVD 88 </b> 3.6 (meters) 12. (feet) VERTCON <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> X </b> -2,656,933.422 (meters) COMP <br> <b> Y </b> -4,270,717.392 (meters) COMP <br> <b> Z </b> 3,908,833.354 (meters) COMP <br> <b> LAPLACE CORR</b> -2.40 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.07 (meters) (03/08/94) GPS OBS <br> <b> GEOID HEIGHT</b> -32.23 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> THIRD <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <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 NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) <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> 671,698.884 1</td><td>878,260.722</td><td> MT </td><td>0.99994177</td><td> -0 ' 50 56.8"</td></tr><tr><td>SPC CA 3 </td><td>2,203,732.09 6</td><td>162,260.39 </td><td> sFT </td><td>0.99994177</td><td> -0 ' 50 56.8"</td></tr><tr><td>SPC CA 2 </td><td> 541,334.248 2</td><td>009,928.927</td><td> MT </td><td>1.00007974</td><td> +0 ' 04 16.7"</td></tr><tr><td>SPC CA 2 </td><td>1,776,027.45 6</td><td>594,241.82 </td><td> sFT </td><td>1.00007974</td><td> +0 ' 04 16.7"</td></tr><tr><td>UTM 10 </td><td>4,210,722.264 </td><td>597,676.521</td><td> MT </td><td>0.99971750</td><td> +0 ' 41 09.4"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000440 x 0.99994177 = 0.99994617 <br> <b>SPC CA 2 </b> 1.00000440 x 1.00007974 = 1.00008414 <br> <b>UTM 10 </b> 1.00000440 x 0.99971750 = 0.99972190 <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> CANOE </td><td>164&deg; 25' 28.7"</td></tr><tr><td>SPC CA 2 </td><td> CANOE </td><td>163&deg; 30' 15.2"</td></tr><tr><td>UTM 10 </td><td> CANOE </td><td>162&deg; 53' 22.5"</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>JS4676</td><td>CANOE </td><td>APPROX. 0.5 KM</td><td>163&deg; 34' 31.9"</td></tr><tr><td>JS4717</td><td>SUISUN BAY LIGHT 30 </td><td>APPROX. 0.5 KM</td><td>340&deg; 04' 55.0"</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 38 02 20.24947(N) 121 53 12.85894(W) AD(1984.00) 3 <br> NGVD 29 (08/12/92) 2.9 (m) 10. (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: 10SEH9767710722(NAD 83) <br>MARKER: DW = NOS HYDROGRAPHIC SURVEY DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: CONCRETE WALK AT BOAT DOCK <br>STAMPING: 275-276 1990 <br>MARK LOGO: NOS <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 - 1990 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1990 </td><td>MONUMENTED </td><td>NOS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1990 THE STATION IS LOCATED IN THE MARINA PARK DEVELOPMENT IN THE CITY OF PITTSBURG. TO REACH STATION FROM HIGHWAY 4 IN PITTSBURG, CA, PROCEED NORTH ON RAILROAD AVENUE FOR 1.2 MI (1.9 KM) TO THIRD STREET. TURN LEFT AND PROCEED TO MARINA BLVD. TURN LEFT ON MARINA BLVD AND TRAVEL IN A SOUTHWESTERLY DIRECTION FOR 0.4 MI (0.6 KM) TO CUTTER STREET. TURN RIGHT AND RIGHT AGAIN ONTO SANDPIPER ROAD. TURN LEFT ONTO AQUINA DRIVE AND PROCEED TO HERON DRIVE. TURN LEFT AND TRAVEL WEST FOR 0.4 MI (0.6 KM) TO THE END OF THE STREET. MARK IS BEHIND THE LAST HOUSE ON THE RIGHT, NO. 324 HERON DRIVE, IN THE SOUTHWEST CORNER OF THE LANDING WHICH LEADS DOWN TO A PRIVATE DOCK. THE STATION IS LOCATED AT THE TOP OF THE FIRST SMALL BOAT PIER IN THE CHANNEL ON THE WEST SIDE. THE STATION IS SET IN A DRILL HOLE IN THE SOUTHEAST CORNER OF THE LANDING AT THE TOP OF THE RAMP DOWN TO THE DOCK. DUE TO HOUSING CONSTRUCTION AFTER ESTABLISHMENT OF THE STATION, IT IS NO LONGER SUITABLE FOR RECEIVING SATELLITE SIGNALS. HS3448 3 USBR http://www.geocaching.com/mark/details.asp?PID=HS3448 3 USBR Geocache Geocache 3 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3 USBR</h1> <b> PID </b> HS3448 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 03. (N) 121 33 29. (W) SCALED <br> <b> NAVD 88 </b> 3.14 (+/-2cm) 10.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.22 (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> 646,740. </td><td> 1,906,850. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.42 (m) 7.9 (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: 10SFG269865(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: PUMP STAND FOUNDATION <br>STAMPING: 3 <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>BOR</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 0.8 MI SW FROM CLIFTON COURT FERRY. 0.8 MILE SOUTHWEST ALONG HERDLYN ROAD FROM THE CLIFTON COURT FERRY OVER OLD RIVER, AT THE SOUTHEAST CORNER OF CLIFTON COURT TRACT, AT THE FISH COLLECTING FACILITIES OF THE DELTA-MENDOTA CANAL, NEAR THE SOUTHWEST END OF THE SHELTERHOUSE FOR THE COMPRESSOR PUMPS, IN THE TOP OF THE SOUTHEAST CORNER OF THE CONCRETE FOUNDATION FOR THE PUMP STAND, 3.7 FEET NORTHWEST OF THE NORTH CORNER OF A PUMP PAD FOR AN AIR COMPRESSOR, 2.1 FEET SOUTHEAST OF THE EAST CORNER OF THE SOLE PLATE UNWATERING PUMP 1, AND ABOUT LEVEL WITH THE CONCRETE FLOOR. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3784 3095 CCC http://www.geocaching.com/mark/details.asp?PID=HS3784 3095 CCC Geocache Geocache 3095 CCC CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3095 CCC</h1> <b> PID </b> HS3784 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 27. (N) 121 41 46. (W) SCALED <br> <b> NAVD 88 </b> 7.72 (+/-2cm) 25.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.38 (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> 666,130. </td><td> 1,894,940. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.997 (m) 22.96 (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: 10SFH144056(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 3095 <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>CA-013</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 1.3 MI SE FROM OAKLEY. 1.2 MILES SOUTHEAST ALONG STATE HIGHWAY 4 FROM THE ATCHISON, TOPEKA AND SANTA FE RAILWAY STATION AT OAKLEY, THENCE 0.1 MILE EAST ALONG CYPRESS ROAD, 1.2 MILES NORTH OF BENCH MARK W 484, 0.15 MILE NORTHWEST OF BENCHMARK R 484, 0.1 MILE WEST OF THE CROSSING OF CYPRESS ROAD, IN THE TOP OF THE NORTHWEST CONCRETE CURB OF A BRIDGE OVER MARSH CREEK, 24.4 FEET NORTH OF THE CENTER LINE OF THE ROAD, 20.2 FEET EAST OF THE WEST END OF THE NORTH STEEL GUARD RAIL, 1.2 FEET SOUTH OF A GUARD RAIL, ABOUT 1/2 FOOT HIGHER THAN THE ROAD, AND LEVEL WITH THE RAILROAD. HT0141 3138 CC CO http://www.geocaching.com/mark/details.asp?PID=HT0141 3138 CC CO Geocache Geocache 3138 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3138 CC CO</h1> <b> PID </b> HT0141 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 58 50. (N) 122 03 10. (W) SCALED <br> <b> NAVD 88 </b> 10.27 (+/-2cm) 33.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.09 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 665,450. </td><td> 1,863,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 9.474 (m) 31.08 (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: 10SEH831040(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: 3138 <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>CA-013</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1973 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 0.6 MI W FROM CONCORD. 0.6 MILE WEST ALONG CONCORD AVENUE FROM THE JUNCTION OF MARKET STREET AT CONCORD, 1.2 MILES SOUTHEAST OF PACHECO, 0.8 MILE EAST OF BENCH MARK C 1197, IN THE TOP OF THE SOUTH CONCRETE SIDEWALK OF CONCRETE BRIDGE 3971C OVER WALNUT CREEK, 25.7 FEET EAST OF THE WEST END OF THE SIDEWALK, 20 FEET SOUTH OF THE CENTER LINE OF THE SOUTH LANES OF THE AVENUE, 0.5 FOOT SOUTH OF THE NORTH EDGE OF THE SIDEWALK, AND ABOUT 1 FOOT HIGHER THAN THE AVENUE. <p> <h2>STATION RECOVERY (1973) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 RECOVERED IN GOOD CONDITION. HS3658 32 CC CO http://www.geocaching.com/mark/details.asp?PID=HS3658 32 CC CO Geocache Geocache 32 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>32 CC CO</h1> <b> PID </b> HS3658 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 10. (N) 121 35 20. (W) SCALED <br> <b> NAVD 88 </b> 6.12 (+/-2cm) 20.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.20 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 646,990. </td><td> 1,904,140. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 5.388 (m) 17.68 (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: 10SFG241867(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: 32 17.86 <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>CA-013</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 4.5 MI SE FROM BYRON. 4.5 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE POST OFFICE AT BYRON, IN R3E T1S, IN THE NORTHEAST QUARTER OF SECTION 25, AT 3-BY 4-FOOT CONCRETE BOX CULVERT 44+15 UNDER BYRON HIGHWAY, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE HEAD WALL, 42.5 FEET SOUTHWEST OF THE CENTER OF THE SOUTHWEST END OF CONCRETE PIPE CULVERT 71.46 UNDER THE RAILROAD TRACK, 19 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1961 RECOVERED IN GOOD CONDITION. HT0091 323.73 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0091 323.73 EBMUD Geocache Geocache 323.73 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>323.73 EBMUD</h1> <b> PID </b> HT0091 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 36. (N) 122 07 13. (W) SCALED <br> <b> NAVD 88 </b> 99.64 (+/-2cm) 326.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,870. </td><td> 1,857,500. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 98.803 (m) 324.16 (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: 10SEG773943(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE MANHOLE <br>STAMPING: 323.73 4666+79.48 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT LAFAYETTE. AT LA FAYETTE, 0.1 MILE WEST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD, THENCE 0.1 MILE NORTH ALONG OAK HILL ROAD, AT THE FORKS OF AN ABANDONED STREET (FORMERLY ORCHARD AVENUE) NOW USED AS A PARKING LOT, ALONG MOKELUMNE AQUEDUCT, IN THE TOP OF THE APPROXIMATE CENTER OF THE WEST SIDE OF A CONCRETE MANHOLE, 19 FEET NORTHEAST OF THE CENTER LINE OF OAK HILL ROAD, ABOUT 1/2 FOOT ABOVE THE GROUND, AND SURROUNDED BY A WOODEN FENCE. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HS3751 3.24 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3751 3.24 EBMUD Geocache Geocache 3.24 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3.24 EBMUD</h1> <b> PID </b> HS3751 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 21. (N) 121 35 06. (W) SCALED <br> <b> NAVD 88 </b> 1.72 (+/-2cm) 5.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.32 (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> 660,270. </td><td> 1,904,630. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.012 (m) 3.32 (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: 10SFH243000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BOX MANHOLE <br>STAMPING: STA P 2602 18.61 F 2602 17.31 ELEV 3.24 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 1.2 MI W FROM ORWOOD. 1.2 MILES WEST ALONG THE ATCHISON, TOPEKA, AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, 247.9 FEET SOUTH OF THE SOUTH RAIL OF THE MAIN TRACK, AT THE EBMUD TWIN 60-INCH PIPES, IN THE TOP OF THE APPROXIMATE CENTER OF THE CONCRETE COLLAR ON THE NORTH PIPE AT THE EAST EDGE OF CONCRETE BOX MANHOLE NO. 144, 74 FEET NORTH OF THE CENTER LINE OF ORWOOD ROAD, 2.2 FEET EAST OF THE EAST EDGE OF THE MANHOLE, 2.5 FEET WEST OF THE EAST EDGE OF THE CONCRETE COLLAR, AND SET ABOUT 5 FEET LOWER THAN THE TRACKS. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HT0096 328.08 CAHD http://www.geocaching.com/mark/details.asp?PID=HT0096 328.08 CAHD Geocache Geocache 328.08 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>328.08 CAHD</h1> <b> PID </b> HT0096 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 51. (N) 122 05 55. (W) SCALED <br> <b> NAVD 88 </b> 100.80 (+/-2cm) 330.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 656,300. </td><td> 1,859,410. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 99.972 (m) 327.99 (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: 10SEG792948(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: WALL <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>CADH</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.2 MI E FROM LAFAYETTE. 1.2 MILES EAST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGE ROAD AT LA FAYETTE, 0.1 MILE WEST OF THE INTERSECTION OF STATE HIGHWAY 21 AND PLEASANT HILL ROAD, ALONG STATE HIGHWAY 21 FREEWAY, IN THE TOP OF THE WEST END OF A LONG CONCRETE RETAINING WALL ALONG THE NORTH SIDE OF THE FREEWAY, 21 FEET NORTH OF THE CENTER LINE OF THE NORTH LANES OF THE HIGHWAY, AND ABOUT 5 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HT0128 3331 CC CO http://www.geocaching.com/mark/details.asp?PID=HT0128 3331 CC CO Geocache Geocache 3331 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3331 CC CO</h1> <b> PID </b> HT0128 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 14. (N) 122 04 15. (W) SCALED <br> <b> NAVD 88 </b> 7.22 (+/-2cm) 23.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 666,210. </td><td> 1,862,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.419 (m) 21.06 (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: 10SEH815048(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 3331 <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>CA-013</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 AT PACHECO. AT PACHECO, 0.3 MILE NORTH ALONG PACHECO BOULEVARD FROM THE JUNCTION OF CENTER STREET, AT THE JUNCTION OF ASPEN DRIVE, IN THE TOP OF THE SOUTHWEST CONCRETE SIDEWALK OF A CONCRETE BRIDGE OVER GRAYSON CREEK, 13.7 FEET SOUTHEAST OF THE NORTHWEST END OF THE SIDEWALK, 21 1/2 FEET SOUTHWEST OF THE CENTER LINE OF THE BOULEVARD, 0.8 FOOT NORTHEAST OF THE NORTHEAST FACE OF THE SOUTHWEST STEEL GUARDRAIL, AND ABOUT 1 FOOT HIGHER THAN THE BOULEVARD. HT0087 341.21 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0087 341.21 EBMUD Geocache Geocache 341.21 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>341.21 EBMUD</h1> <b> PID </b> HT0087 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 31. (N) 122 07 47. (W) SCALED <br> <b> NAVD 88 </b> 104.97 (+/-2cm) 344.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,730. </td><td> 1,856,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 104.13 (m) 341.6 (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: 10SEG765941(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: WALL <br>STAMPING: 341.21 4703+84.43 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 0.8 MI W FROM LAFAYETTE. 0.8 MILE WEST ALONG STATE HIGHWAY 24 FROM LA FAYETTE, CONTRA COSTA COUNTY, 0.4 MILE EAST OF THE LA FAYETTE PUMPING PLANT, 100 FEET NORTH OF A LARGE PINE TREE WITH A SIGN LONE PINE RANCH, 51 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, AT THE NORTH ONE OF TWO MANHOLES, AND IN THE CENTER OF THE TOP OF THE EAST WALL. AN EAST BAY MUNICIPAL UTILITY DISTRICT STANDARD DISK, STAMPED 341.21 4703+84.43. NOTE-- THE MANHOLE COULD NOT BE LOCATED. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) RECOVERED IN GOOD CONDITION. HT0095 349.20 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0095 349.20 EBMUD Geocache Geocache 349.20 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>349.20 EBMUD</h1> <b> PID </b> HT0095 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 51. (N) 122 05 55. (W) SCALED <br> <b> NAVD 88 </b> 107.39 (+/-2cm) 352.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 656,300. </td><td> 1,859,410. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 106.564 (m) 349.62 (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: 10SEG792948(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE MANHOLE COVER <br>STAMPING: 349.20 4600+27.38 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.2 MI E FROM LAFAYETTE. 1.2 MILES EAST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD AT LA FAYETTE, ABOUT 0.1 MILE WEST OF STATE HIGHWAY 21 FREEWAY BRIDGE OVER PLEASANT HILL ROAD, ALONG STATE HIGHWAY 21, IN LINE WITH THE EXTENSION OF THE EAST BOUNDARY FENCE OF THE LA FAYETTE CEMETERY, ALONG MOKELUMNE AQUEDUCT, AT CONCRETE MANHOLE 4600, IN THE TOP OF THE WEST SIDE OF THE CONCRETE MANHOLE COVER, 110 FEET NORTH OF THE CENTER LINE OF THE NORTH LANES OF THE HIGHWAY, ABOUT 90 FEET NORTH OF BENCH MARK 328.08 (CSHD), 69 FEET NORTH OF A HIGHWAY RIGHT-OF-WAY FENCE, ABOUT 26 FEET HIGHER THAN THE HIGHWAY, AND ABOUT 1 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HS3655 35 CC CO http://www.geocaching.com/mark/details.asp?PID=HS3655 35 CC CO Geocache Geocache 35 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>35 CC CO</h1> <b> PID </b> HS3655 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 50 05. (N) 121 36 32. (W) SCALED <br> <b> NAVD 88 </b> 6.01 (+/-2cm) 19.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.21 (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> 648,710. </td><td> 1,902,390. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.284 (m) 17.34 (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: 10SFG224883(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 17.68 35 <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>CA-013</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 2.9 MI SE FROM BYRON. 2.9 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE POST OFFICE AT BYRON, IN R3E T1S, IN THE NORTHEAST QUARTER OF SECTION 23, AT CONCRETE HIGHWAY BRIDGE 127+00 OVER BRUSHY CREEK, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE HEAD WALL, 20 1/2 FEET NORTHEAST OF THE CENTER LINE OF BYRON HIGHWAY, AND ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3750 3.50 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3750 3.50 EBMUD Geocache Geocache 3.50 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3.50 EBMUD</h1> <b> PID </b> HS3750 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 21. (N) 121 35 30. (W) SCALED <br> <b> NAVD 88 </b> 1.81 (+/-2cm) 5.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.33 (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> 660,280. </td><td> 1,904,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.096 (m) 3.60 (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: 10SFH237000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE COLLAR <br>STAMPING: STA P 2625 31.58 F 2625 30.28 ELEV 3.50 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 1.7 MI W FROM ORWOOD. 1.7 MILES WEST ALONG THE ATCHISON, TOPEKA, AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, ABOUT 87 YARDS SOUTHWEST OF MILEPOLE NO. 1138, ABOUT 83 YARDS SOUTH OF THE SOUTH RAIL, AT THE EBMUD TWIN 60-INCH PIPES, IN THE TOP OF THE APPROXIMATE CENTER OF THE CONCRETE COLLAR ON THE NORTH PIPE, AT THE EAST EDGE OF CONCRETE BOX MANHOLE NO. 145, 78 FEET NORTH OF THE CENTER LINE OF ORWOOD ROAD, 2.3 FEET EAST OF THE EAST EDGE OF A MANHOLE, 2.5 FEET WEST OF THE EAST EDGE OF THE COLLAR, AND SET ABOUT 6 FEET LOWER THAN THE TRACKS. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3654 36 CC CO http://www.geocaching.com/mark/details.asp?PID=HS3654 36 CC CO Geocache Geocache 36 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>36 CC CO</h1> <b> PID </b> HS3654 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 50 38. (N) 121 37 02. (W) SCALED <br> <b> NAVD 88 </b> 8.57 (+/-2cm) 28.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.22 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 649,730. </td><td> 1,901,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 7.845 (m) 25.74 (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: 10SFG216893(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 25.96 36 <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>CA-013</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 2.2 MI SE FROM BYRON. 2.2 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE POST OFFICE AT BYRON, IN R3E T1S, IN THE SOUTHWEST QUARTER OF SECTION 14, AT BYRON HIGHWAY CONCRETE BRIDGE 165+20, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE HEAD WALL, 44 FEET EAST OF AND ACROSS THE HIGHWAY FROM POWER LINE POLE 2/12, 19 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1 FOOT HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0123 37 CC CO http://www.geocaching.com/mark/details.asp?PID=HT0123 37 CC CO Geocache Geocache 37 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>37 CC CO</h1> <b> PID </b> HT0123 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 58 17. (N) 122 04 03. (W) SCALED <br> <b> NAVD 88 </b> 9.12 (+/-2cm) 29.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 664,450. </td><td> 1,862,280. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 8.313 (m) 27.27 (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: 10SEH819030(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: 37 <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>CA-013</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1 MI S FROM PACHECO. 0.8 MILE SOUTH ALONG STATE HIGHWAY 21 FROM THE TOWN HALL AT PACHECO, THENCE 0.2 MILE WEST ALONG GOLF CLUB ROAD, AT A CONCRETE BRIDGE OVER GRAYSON CREEK, IN THE TOP OF THE EAST END OF THE NORTH CONCRETE SIDEWALK, 16 FEET NORTH OF THE CENTER LINE OF THE ROAD, AND ABOUT 1/2 FOOT HIGHER THAN THE ROAD. HT0086 374.27 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0086 374.27 EBMUD Geocache Geocache 374.27 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>374.27 EBMUD</h1> <b> PID </b> HT0086 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 24. (N) 122 08 25. (W) SCALED <br> <b> NAVD 88 </b> 115.04 (+/-2cm) 377.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,530. </td><td> 1,855,730. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 114.197 (m) 374.66 (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: 10SEG755939(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STAMPING: 374.27 4727+89.24 CL 4.98 RT <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.3 MI W FROM LAFAYETTE. 1.3 MILES WEST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD AT LA FAYETTE, AT THE LA FAYETTE FILTER PLANT AND BRYANT-COLORADOS PUMPING PLANT, IN THE TOP OF THE NORTH WALL OF A CONCRETE MANHOLE, ABOUT 350 FEET NORTHEAST OF THE CENTER LINE OF THE BOULEVARD, 77 FEET NORTHEAST OF THE EAST CORNER OF THE BRYANT-COLORADOS PUMPING PLANT BUILDING, 11 FEET NORTH OF THE NORTH CURB OF AN ASPHALT DRIVEWAY LEADING WEST, AND ABOUT 2 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) RECOVERED IN GOOD CONDITION. HS3749 3.80 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3749 3.80 EBMUD Geocache Geocache 3.80 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3.80 EBMUD</h1> <b> PID </b> HS3749 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 22. (N) 121 36 03. (W) SCALED <br> <b> NAVD 88 </b> 1.90 (+/-2cm) 6.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.33 (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> 660,320. </td><td> 1,903,240. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.187 (m) 3.89 (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: 10SFH229000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BOX MANHOLE <br>STAMPING: STA P 2648 44.77 F 2648 43.47 ELEV 5.53 <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>EBMUD</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1963 2.1 MI W FROM ORWOOD. 2.1 MILES WEST ALONG THE ATCHISON, TOPEKA AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER OLD RIVER AT ORWOOD, IN CONCRETE BOX MANHOLE 146, ABOUT 80 YARDS SOUTH OF THE TRACK, AT TWIN 60-INCH PIPES OF THE EAST BAY MUNICIPAL UTILITY DISTRICT, 78 FEET NORTH OF THE CENTER LINE OF THE ROAD, AND ABOUT 6 FEET LOWER THAN THE TRACKS. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HT0084 393.97 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0084 393.97 EBMUD Geocache Geocache 393.97 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>393.97 EBMUD</h1> <b> PID </b> HT0084 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 32. (N) 122 08 50. (W) SCALED <br> <b> NAVD 88 </b> 121.06 (+/-2cm) 397.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,790. </td><td> 1,855,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 120.219 (m) 394.42 (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: 10SEG749942(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE MANHOLE <br>STAMPING: 393.97 4752+72.30 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.8 MI W FROM LAFAYETTE. 1.7 MILES WEST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD AT LA FAYETTE, THENCE 0.05 MILE NORTH ALONG SUNNYBROOK DRIVE, THENCE 0.05 MILE WEST ALONG WINDMILL ROAD, AT AQUEDUCT STATION 4753, IN THE TOP OF THE NORTHWEST SIDE OF THE CONCRETE MANHOLE, 47 FEET (SLOPE MEASUREMENT) SOUTHWEST OF THE CENTER LINE OF WINDMILL ROAD, ABOUT 15 FEET LOWER THAN THE ROAD, AND ABOUT 2 1/2 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HS3708 395 USGS http://www.geocaching.com/mark/details.asp?PID=HS3708 395 USGS Geocache Geocache 395 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>395 USGS</h1> <b> PID </b> HS3708 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLAYTON (1994) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 28. (N) 121 56 02. (W) SCALED <br> <b> NAVD 88 </b> 121.32 (+/-2cm) 398.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -31.85 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 660,900. </td><td> 1,873,970. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 120.507 (m) 395.36 (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: 10SEG936998(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: ABUTMENT <br>STAMPING: 395 <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>USGS</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 AT CLAYTON. AT CLAYTON, 0.1 MILE EAST ALONG CLAYTON ROAD (BLACK DIAMOND HIGHWAY) FROM THE POST OFFICE, IN R1W T1N, IN THE NORTHEAST CORNER OF SECTION 14, AT THE T JUNCTION OF MARSH CREEK ROAD LEADING SOUTH, AT A CONCRETE BRIDGE OVER MT DIABLO CREEK, 80 1/2 FEET EAST OF THE CENTER LINE OF MARSH CREEK ROAD, 16 1/2 FEET SOUTH OF THE CENTER LINE OF CLAYTON ROAD, SOUTHWEST OF THE SOUTHWEST CORNER OF THE SOUTH END OF THE WEST CONCRETE ABUTMENT OF THE BRIDGE, ABOUT 2 1/2 FEET LOWER THAN THE ROAD, AND RIVETED ON TOP OF A 3 1/2-INCH IRON PIPE PROJECTING 0.7 FOOT ABOVE THE GROUND. NOTE-- PREVIOUSLY DESIGNATED 895 USGS <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3449 4 USBR http://www.geocaching.com/mark/details.asp?PID=HS3449 4 USBR Geocache Geocache 4 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>4 USBR</h1> <b> PID </b> HS3449 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 02. (N) 121 33 30. (W) SCALED <br> <b> NAVD 88 </b> 3.14 (+/-2cm) 10.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.22 (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> 646,710. </td><td> 1,906,820. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 2.423 (m) 7.95 (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: 10SFG268865(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: FLOOR <br>STAMPING: 4 <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>BOR</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 0.8 MI SW FROM CLIFTON COURT FERRY. 0.8 MILE SOUTHWEST ALONG HERDLYN ROAD FROM THE CLIFTON COURT FERRY OVER OLD RIVER, AT THE SOUTHEAST CORNER OF CLIFTON COURT TRACT, AT THE FISH COLLECTING FACILITIES OF THE DELTA-MENDOTA CANAL, AT THE MAIN PUMP DECK, IN THE TOP OF THE NORTH CORNER OF THE CONCRETE FLOOR (THIS FLOOR IS SET ON PILING DRIVEN 23 FEET INTO THE GROUND), 9 FEET SOUTHEAST OF THE CENTER LINE OF A BLACKTOP SERVICE ROAD, 2.1 FEET NORTH OF THE NORTH CORNER OF A GRATE FRAME, AND ABOUT 1/2 FOOT HIGHER THAN THE ROAD. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT1025 414.62 EBWCO http://www.geocaching.com/mark/details.asp?PID=HT1025 414.62 EBWCO Geocache Geocache 414.62 EBWCO EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>414.62 EBWCO</h1> <b> PID </b> HT1025 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 05. (N) 122 17 09. (W) SCALED <br> <b> NAVD 88 </b> 127.28 (+/-2cm) 417.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.24 (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> 657,030. </td><td> 1,842,960. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 126.444 (m) 414.84 (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: 10SEG627951(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BLOCK <br>STAMPING: 414.62 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 AT EL CERRITO. AT EL CERRITO, 43 YARDS SOUTHWEST OF THE INTERSECTON OF LENOX AND BEVERLY ROADS, AT THE OLD, ABANDONED, KENSINGTON WATER STORAGE TANK, AT THE NORTH EDGE OF THE PATIO IN THE BACK YARD OF THE HOUSE AT 26 LENOX ROAD, IN THE TOP OF THE NORTHWEST CORNER OF A 3X4-FOOT CONCRETE BLOCK WITH AN IRON COVER LEADING DOWN INTO THE OLD, CONCRETE TANK, AND PROJECTING ABOUT 3 FEET ABOVE THE PATIO. HT0085 4725+86.37 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0085 4725+86.37 EBMUD Geocache Geocache 4725+86.37 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>4725+86.37 EBMUD</h1> <b> PID </b> HT0085 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 24. (N) 122 08 25. (W) SCALED <br> <b> NAVD 88 </b> 116.80 (+/-2cm) 383.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,530. </td><td> 1,855,730. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 115.953 (m) 380.42 (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: 10SEG755939(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: WALL <br>STAMPING: 4725+86.37 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.3 MI W FROM LAFAYETTE. 1.3 MILES WEST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD AT LA FAYETTE, AT THE LA FAYETTE FILTER PLANT AND BRYANT-COLORADOS PUMPING PLANT, ABOUT 400 FEET NORTHEAST OF THE CENTER LINE OF THE BOULEVARD, AT THE FILTER PLANT, AT THE UPPER EDGE OF THE TERRACE, SET VERTICALLY IN THE NORTHWEST CONCRETE WALL, 26 FEET SOUTHWEST OF THE NORTH CORNER OF THE PLANT BUILDING, AND ABOUT LEVEL WITH THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HT0167 478.88 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0167 478.88 EBMUD Geocache Geocache 478.88 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>478.88 EBMUD</h1> <b> PID </b> HT0167 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> OAKLAND EAST (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 49 57. (N) 122 07 54. (W) SCALED <br> <b> NAVD 88 </b> 146.34 (+/-2cm) 480.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.17 (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> 649,130. </td><td> 1,856,380. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 145.484 (m) 477.31 (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: 10SEG764875(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE MANHOLE <br>STAMPING: 240+01.00 478.88 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 AT MORAGA. AT MORAGA, 0.2 MILE SOUTH OF THE POST OFFICE, 77 FEET EAST OF THE SOUTH CORNER OF THE OLD, ABANDONED MORAGA SCHOOL, 50 FEET WEST OF THE CENTERLINE OF THE OLD RAILROAD BED OF THE ABANDONED SACRAMENTO NORTHERN RAILWAY, ABOUT 4 FEET LOWER THAN THE BED, SET IN THE TOP OF CONCRETE MANHOLE STRUCTURE 240+01.00, 0.5 FOOT NORTHEAST OF THE SOUTHWEST SIDE OF THE STRUCTURE, AND FLUSH WITH THE GROUND. HT0908 49.87 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0908 49.87 EBMUD Geocache Geocache 49.87 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>49.87 EBMUD</h1> <b> PID </b> HT0908 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 57 47. (N) 122 20 44. (W) SCALED <br> <b> NAVD 88 </b> 16.07 (+/-2cm) 52.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.26 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 663,970. </td><td> 1,837,840. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 15.261 (m) 50.07 (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: 10SEH574019(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: 49.87 <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>EBMUD</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1961 AT SAN PABLO. AT SAN PABLO, IN R4W T1N, ALONG SAN PABLO AVENUE, AT THE T-JUNCTION OF COUNTY ROAD NO. 20, IN THE NORTH END OF THE WEST CONCRETE SIDEWALK OF BRIDGE 28-02 OVER SAN PABLO CREEK, 4.4 FEET WEST OF THE WEST CURB OF THE AVENUE, 0.3 FOOT NORTHEAST OF THE NORTHEAST EDGE OF THE WEST CONCRETE GUARD RAIL, AND ABOUT 1/2 FOOT HIGHER THAN THE AVENUE. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) RECOVERED IN GOOD CONDITION. HT1015 509.70 EBWCO http://www.geocaching.com/mark/details.asp?PID=HT1015 509.70 EBWCO Geocache Geocache 509.70 EBWCO EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>509.70 EBWCO</h1> <b> PID </b> HT1015 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 47. (N) 122 16 09. (W) SCALED <br> <b> NAVD 88 </b> 156.31 (+/-2cm) 512.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.20 (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> 658,290. </td><td> 1,844,450. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 155.460 (m) 510.04 (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: 10SEG642964(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: PLATFORM <br>STAMPING: 509.70 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 1 MI N FROM EL CERRITO. 1.0 MILE NORTH ALONG A PAVED THEN A GRAVELED ROAD FROM THE SUMMIT RESERVOIR AT EL CERRITO, AT CHARLES LEE TILDEN REGIONAL PARK, 65 YARDS NORTHWEST OF THE SPILLWAY OF JEWEL LAKE, SET IN THE TOP OF A CONCRETE PLATFORM OF A WATER GATE ABOVE A CONCRETE FLUME, 100 FEET SOUTHWEST OF THE CENTERLINE OF THE ROAD, 2.0 FEET NORTH OF THE SOUTH CORNER OF THE PLATFORM, AND ABOUT 6 FEET LOWER THAN THE ROAD. HS3621 540 CAHD http://www.geocaching.com/mark/details.asp?PID=HS3621 540 CAHD Geocache Geocache 540 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>540 CAHD</h1> <b> PID </b> HS3621 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 52. (N) 121 47 04. (W) SCALED <br> <b> NAVD 88 </b> 17.78 (+/-2cm) 58.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.30 (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> 667,000. </td><td> 1,887,190. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 17.042 (m) 55.91 (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: 10SFH067062(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: B M 540 CC 75 F <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>CADH</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 1.1 MI E FROM ANTIOCH. 1.1 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE CROSSING OF A STREET AT ANITOCH, 0.1 MILE EAST OF THE CROSSING OF HILLCREST AVENUE, IN R2E T2N S20, 46.1 FEET SOUTH OF THE SOUTH RAIL, 5 FEET SOUTH OF A TELEPHONE POLE, 1.3 FEET SOUTH OF A WHITE STEEL POST, 1.0 FOOT NORTH OF A FENCE, ABOUT LEVEL WITH THE TRACK, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0121 54.746 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0121 54.746 EBMUD Geocache Geocache 54.746 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>54.746 EBMUD</h1> <b> PID </b> HT0121 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 46. (N) 122 03 37. (W) SCALED <br> <b> NAVD 88 </b> 17.58 (+/-2cm) 57.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 661,640. </td><td> 1,862,870. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 16.775 (m) 55.04 (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: 10SEH825002(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE MANHOLE COVER <br>STAMPING: 54.746 P 4318+96.70 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 2.6 MI S FROM PACHECO. 2.6 MILES SOUTH ALONG STATE HIGHWAY 21 FROM THE TOWN HALL AT PACHECO, ABOUT 0.2 MILE NORTH OF THE T JUNCTION OF STATE HIGHWAY 24, AT THE FORMER SITE OF SHERMAN AIRPORT, ALONG THE MOKELUMNE AQUEDUCT, AT MANHOLE STATION 4319, IN THE TOP AND NEAR THE CENTER OF THE SOUTHWEST SIDE OF THE CONCRETE MANHOLE COVER, 140 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A FENCE AROUND THE PLEASANT HILL OUTDOOR THEATRE, 5 FEET NORTHWEST OF THE CENTER OF A TRACK ROAD ALONG THE TOP OF THE AQUEDUCT, AND ABOUT 1 FOOT ABOVE THE GROUND. HS3748 5.53 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3748 5.53 EBMUD Geocache Geocache 5.53 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>5.53 EBMUD</h1> <b> PID </b> HS3748 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 22. (N) 121 36 30. (W) SCALED <br> <b> NAVD 88 </b> 2.42 (+/-2cm) 7.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.34 (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> 660,330. </td><td> 1,902,580. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.707 (m) 5.60 (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: 10SFH222000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: STA P 2669 89.15 F 2669 87.85 ELEV 5.53 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 2.5 MI W FROM ORWOOD. 2.5 MILES WEST ALONG THE ATCHINSON, TOPEKA AND SANTA FE RAILROAD TRACK FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, 248 FEET SOUTH OF THE SOUTH RAIL OF THE MAIN TRACK, AT A CROSSING OF A GRAVELED ROAD OVER THE EBMUD 60-INCH TWIN PIPES, IN THE TOP OF THE CENTER OF THE EAST CONCRETE HEADWALL OF THE NORTH PIPE, 193.9 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE PACKING SHED WITH CORRUGATED METAL SIDES AND ROOF, 79.5 FEET NORTH OF THE CENTERLINE OF ORWOOD ROAD, 29.4 FEET EAST OF THE NORTHEAST CORNER OF A CONCRETE BOX MANHOLE NO. 147, 12 FEET EAST OF THE CENTERLINE OF THE GRAVELED ROAD, AND 2 FEET BELOW THE SURFACE OF THE ROAD SHOULDER. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3622 570 CAHD http://www.geocaching.com/mark/details.asp?PID=HS3622 570 CAHD Geocache Geocache 570 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>570 CAHD</h1> <b> PID </b> HS3622 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 48. (N) 121 46 31. (W) SCALED <br> <b> NAVD 88 </b> 17.82 (+/-2cm) 58.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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> 666,870. </td><td> 1,888,000. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 17.077 (m) 56.03 (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: 10SFH075061(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: B M 570 CC 75 F <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>CADH</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 1.6 MI E FROM ANTIOCH. 1.6 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE CROSSING OF A STREET A ANTIOCH, 0.6 MILE EAST OF THE CROSSING OF HILLCREST AVENUE, 0.3 MILE EAST OF MILEPOLE 55, IN R2E T2N S29, 46.1 FEET SOUTH OF THE SOUTH RAIL, 7 1/2 FEET SOUTHWEST OF A TELEPHONE POLE, 1.4 FEET NORTH OF A FENCE, 1.7 FEET SOUTH OF A WHITE STEEL POST, ABOUT 4 1/2 FEET LOWER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST 0.2 FOOT UNDERGROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3623 588 CAHD http://www.geocaching.com/mark/details.asp?PID=HS3623 588 CAHD Geocache Geocache 588 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>588 CAHD</h1> <b> PID </b> HS3623 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 41. (N) 121 46 09. (W) SCALED <br> <b> NAVD 88 </b> 23.83 (+/-2cm) 78.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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> 666,640. </td><td> 1,888,530. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 23.087 (m) 75.74 (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: 10SFH080059(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: B M 588 CC 75 F <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>CADH</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 2 MI E FROM ANTIOCH. 2.0 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE CROSSING OF A STREET AT ANTIOCH, IN R2E T2N S29, AT THE CROSSING OF WILLOW AVENUE, AT A RIGHT-ANGLE IN A FENCE LINE WITH A WIRE GATE, 232.7 FEET SOUTH OF THE SOUTH RAIL, 81.2 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF A RANCHHOUSE, 4.5 FEET SOUTH OF THE FENCE, 1.3 FEET SOUTH OF A WHITE STEEL POST, ABOUT 5 FEET HIGHER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0118 59.847 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0118 59.847 EBMUD Geocache Geocache 59.847 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>59.847 EBMUD</h1> <b> PID </b> HT0118 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 26. (N) 122 03 37. (W) SCALED <br> <b> NAVD 88 </b> 19.12 (+/-2cm) 62.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 661,020. </td><td> 1,862,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.31 (m) 60.1 (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: 10SEG825996(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE MANHOLES <br>STAMPING: P 4343 + 14.07 59.847 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1958 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 3.2 MI N FROM WALNUT CREEK. 3.2 MILES NORTH ALONG STATE HIGHWAY 21 FROM THE BANK OF AMERICA IN WALNUT CREEK, 3.0 MILES SOUTH OF PACHECO, ABOUT 100 YARDS NORTH OF THE T JUNCTION OF HOOKSTON ROAD LEADING EAST, 75.0 FEET NORTHWEST OF THE CENTER OF THE Y JUNCTION OF A TRACK LEADING SOUTHWEST, 39.7 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, IN THE TOP OF THE SOUTH SIDE OF THE NORTHEAST ONE OF TWO CONCRETE MANHOLES, AND SET ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1958 MARK NOT FOUND. HT0119 60.991 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0119 60.991 EBMUD Geocache Geocache 60.991 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>60.991 EBMUD</h1> <b> PID </b> HT0119 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 26. (N) 122 03 37. (W) SCALED <br> <b> NAVD 88 </b> 19.52 (+/-2cm) 64.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 661,020. </td><td> 1,862,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.711 (m) 61.39 (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: 10SEG825996(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CURB <br>STAMPING: 60.991 4344+10.40 <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 2.8 MI N FROM WALNUT CREEK. 2.8 MILES NORTH ALONG NORTH MAIN STREET FROM THE CITY HALL AT WALNUT CREEK, ABOUT 0.2 MILE SOUTH OF THE T JUNCTION OF BOYD ROAD AND A VETERANS MEMORIAL MONUMENT, AT THE CROSSING OF THE EAST BAY MUNICIPAL UTILITY DISTRICT AQUEDUCT, AT MANHOLE STATION 4344, IN THE TOP OF THE CENTER OF THE SOUTHWEST SIDE OF THE CONCRETE MANHOLE ROOF, 41 FEET WEST OF THE WEST CONCRETE CURB OF THE STREET, AND ABOUT 1 1/2 FEET ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) RECOVERED IN GOOD CONDITION. HT0120 62.07 CC CO http://www.geocaching.com/mark/details.asp?PID=HT0120 62.07 CC CO Geocache Geocache 62.07 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>62.07 CC CO</h1> <b> PID </b> HT0120 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 36. (N) 122 03 38. (W) SCALED <br> <b> NAVD 88 </b> 19.68 (+/-2cm) 64.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 661,330. </td><td> 1,862,840. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.873 (m) 61.92 (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: 10SEG825999(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: MONUMENT <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>CA-013</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 3 MI N FROM WALNUT CREEK. 3.0 MILES NORTH ALONG NORTH MAIN STREET FROM THE CITY HALL AT WALNUT CREEK, 2.9 MILES SOUTH OF PACHECO, 0.1 MILE SOUTH OF THE T JUNCTION OF STATE HIGHWAYS 21 AND 24, AT THE T JUNCTION OF BOYD ROAD, AT A LARGE CONCRETE MONUMENT COMMEMORATING THE VETERANS OF WORLD WARS, IN THE TOP OF THE NORTHEAST CORNER OF THE CONCRETE BASE FOR THE MONUMENT, ABOUT 5 FEET HIGHER THAN THE STREET, AND ABOUT 1 1/2 FEET HIGHER THAN THE CONCRETE SIDEWALK. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) RECOVERED IN GOOD CONDITION. JS1858 624 CC CO http://www.geocaching.com/mark/details.asp?PID=JS1858 624 CC CO Geocache Geocache 624 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>624 CC CO</h1> <b> PID </b> JS1858 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> HONKER BAY (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 02 22. (N) 121 58 06. (W) SCALED <br> <b> NAVD 88 </b> 5.39 (+/-2cm) 17.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 671,860. </td><td> 1,871,120. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 4.608 (m) 15.12 (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: 10SEH905106(NAD 83) <br>MARKER: N = NAIL <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>CA-013</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1964 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 2.8 MI E FROM PORT CHICAGO. 2.8 MILES EAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT PORT CHICAGO, 1.05 MILES EAST OF NICHOLS, 0.45 MILE WEST OF MC AVOY, 0.35 MILE EAST OF THE CROSSING OF AN ASPHALT ROAD, ALONG THE PORT CHICAGO HIGHWAY, AT THE T JUNCTION OF INLET DRIVE, ABOUT 175 FEET SOUTH OF THE SACRAMENTO NORTHERN RAILROAD TRACK, 31.4 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, IN LINE WITH THE CENTER LINE OF THE DRIVE, 0.3 FOOT UNDERGROUND, AND SET IN THE TOP OF A CONCRETE POST. NOTE-- ACCESS TO MARK HAS THROUGH AN IRON PIPE WITH A CAST IRON COVER FLUSH WITH THE PAVEMENT AND MARKED BY THE LETTERS MONUMENT. <p> <h2>STATION RECOVERY (1964) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1964 RECOVERED IN GOOD CONDITION. HS3625 629 CAHD http://www.geocaching.com/mark/details.asp?PID=HS3625 629 CAHD Geocache Geocache 629 CAHD CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>629 CAHD</h1> <b> PID </b> HS3625 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 27. (N) 121 45 13. (W) SCALED <br> <b> NAVD 88 </b> 19.64 (+/-2cm) 64.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.33 (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> 666,190. </td><td> 1,889,890. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.905 (m) 62.02 (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: 10SFH094055(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: BM 629 OCC 75F <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>CADH</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 2.7 MI E FROM ANTIOCH. 2.7 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE CROSSING OF A STREET AT ANTIOCH, IN R2E T2N S28, ON THE OUTSIDE OF A LONG CURVE, 18 1/2 RAILS NORTHWEST OF THE NORTHWEST END OF BRIDGE 56.57, 49.9 FEET NORTHEAST OF THE NORTHEAST RAIL, 1.3 FEET NORTHEAST OF A FENCE, 1.2 FEET NORTHWEST OF A STEEL POST, ABOUT 10 FEET LOWER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. JS1868 635 CC CO http://www.geocaching.com/mark/details.asp?PID=JS1868 635 CC CO Geocache Geocache 635 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>635 CC CO</h1> <b> PID </b> JS1868 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> HONKER BAY (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 01 44. (N) 121 53 57. (W) SCALED <br> <b> NAVD 88 </b> 2.37 (+/-2cm) 7.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.19 (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> 670,600. </td><td> 1,877,170. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.609 (m) 5.28 (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: 10SEH966095(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONC MANHOLE <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>CA-013</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1964 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 1 MI NW FROM PITTSBURG. 0.3 MILE NORTH ALONG RAILROAD AVENUE FROM THE SOUTHERN PACIFIC COMPANY RAILROAD STATION AT PITTSBURG, THENCE 0.7 MILE WEST ALONG WEST 10TH STREET (WILLOW PASS ROAD), IN R1E T2N, 1.0 MILE EAST OF BENCH MARK N 191, 0.3 MILE NORTH ACROSS COUNTRY FROM BENCH MARK B 475, AT THE CROSSING OF THE ATCHISON, TOPEKA AND SANTA FE RAILROAD SPUR TRACK, AT THE T JUNCTION OF AN ASPHALT ROAD LEADING NORTH TO THE PACIFIC GAS AND ELECTRIC COMPANY POWER PLANT, AT THE NORTHEAST CORNER OF AN IRON FENCE AROUND THE CONTINENTAL CAN COMPANY, IN THE TOP OF A CONCRETE MANHOLE STRUCTURE, 43.2 FEET EAST OF BENCH MARK F 556, 40 1/2 FEET SOUTH OF THE CENTER LINE OF THE STREET, 15.0 FEET WEST OF THE WEST RAIL OF A SPUR TRACK, 3.0 FEET NORTH OF A FENCE, AND ABOUT 1 FOOT LOWER THAN THE STREET. <p> <h2>STATION RECOVERY (1964) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1964 RECOVERED IN GOOD CONDITION. HS3638 639 USGS http://www.geocaching.com/mark/details.asp?PID=HS3638 639 USGS Geocache Geocache 639 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>639 USGS</h1> <b> PID </b> HS3638 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 18. (N) 121 40 22. (W) SCALED <br> <b> NAVD 88 </b> 19.71 (+/-2cm) 64.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.28 (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> 656,580. </td><td> 1,896,870. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 18.975 (m) 62.25 (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: 10SFG166961(NAD 83) <br>MARKER: Q = CHISELED SQUARE <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SEMAPHORE <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>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 2.2 MI SE FROM BRENTWOOD. 2.2 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT BRENTWOOD, IN R3E T1N, IN THE NORTHWEST QUARTER OF SECTION 29, 1 1/2 RAILS NORTHWEST OF MILEPOLE 64, AT SEMAPHORE 639, ON THE TOP OF THE CONCRETE FOUNDATION SUPPORTING A STEEL LADDER, 7.3 FEET NORTHEAST OF THE NORTHEAST RAIL, 1.1 FEET NORTHWEST OF THE METAL BASE OF THE SEMAPHORE, AND ABOUT LEVEL WITH THE TRACK. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HS3752 6.40 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3752 6.40 EBMUD Geocache Geocache 6.40 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>6.40 EBMUD</h1> <b> PID </b> HS3752 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WOODWARD ISLAND (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 21. (N) 121 34 38. (W) SCALED <br> <b> NAVD 88 </b> 2.67 (+/-2cm) 8.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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>This Tidal Bench Mark is designated as VM 11855 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> 660,270. </td><td> 1,905,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 1.959 (m) 6.43 (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: 10SFH250000(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BOX MANHOLE <br>STAMPING: STA P 2580 12.56 F 2580 11.26 ELEV 6.40 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 0.8 MI W FROM ORWOOD. 0.8 MILES WEST ALONG THE ATCHISON, TOPEKA, AND SANTA FE RAILROAD FROM THE WEST END OF THE DRAWBRIDGE OVER THE OLD RIVER AT ORWOOD, ABOUT 60 YARDS SOUTH OF ELECTRIC SIGNAL NO. 11371, AT THE CROSSING OF EBMUD 60-INCH TWIN PIPES UNDER ORWOOD ROAD, IN TOP OF THE CONCRETE BOX MANHOLE NO. 143 OVER THE TOP OF THE NORTH PIPE, 37.4 FEET WEST OF AND ACROSS THE ROAD FROM BM 2.67 (EBMUD), 21 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 3.9 FEET NORTH OF THE SOUTH EDGE OF THE MANHOLE, 2.8 FEET EAST OF THE WEST EDGE OF THE MANHOLE, AND SET ABOUT 3 1/2 FEET HIGHER THAN THE ROAD. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HT0937 6+40.14 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0937 6+40.14 EBMUD Geocache Geocache 6+40.14 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>6+40.14 EBMUD</h1> <b> PID </b> HT0937 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> SAN QUENTIN (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 55 57. (N) 122 23 54. (W) SCALED <br> <b> NAVD 88 </b> 11.08 (+/-2cm) 36.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.29 (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> 660,670. </td><td> 1,833,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 10.27 (m) 33.7 (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: 10SEG528984(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: 6+40.14 <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>EBMUD</td></tr><tr><td>1956 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT POINT RICHMOND. AT POINT RICHMOND, CONTRA COSTA COUNTY, 117 FEET SOUTHWEST OF THE SOUTH RAIL OF THE CONCRETE BRIDGE OVER THE STANDARD OIL CO. PIPE LINES, AND 30 FEET SOUTHEAST OF THE CENTERLINE OF THE SAN RAFAEL FERRY ROAD. AN EAST BAY MUNICIPAL UTILITIES DISTRICT STANDARD DISK, STAMPED 6+40.14 AND SET IN THE TOP OF A 4-1/2 INCH CONCRETE-FILLED PIPE SET IN CONCRETE, PROJECTING 6 INCHES ABOVE GROUND. NOTE-- THE RICHMOND-SAN RAFAEL FREEWAY CROSSES THIS AREA. HT0082 642.839 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0082 642.839 EBMUD Geocache Geocache 642.839 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>642.839 EBMUD</h1> <b> PID </b> HT0082 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 32. (N) 122 10 10. (W) SCALED <br> <b> NAVD 88 </b> 196.82 (+/-2cm) 645.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 655,820. </td><td> 1,853,170. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 195.976 (m) 642.96 (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: 10SEG730941(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: WALL <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>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 3.1 MI W FROM LAFAYETTE. 3.1 MILES WEST ALONG MOUNT DIABLO BOULEVARD FROM THE T JUNCTION OF MORAGA ROAD AT LA FAYETTE, 390 FEET EAST OF THE CENTER OF THE Y JUNCTION OF CHARLES HILL ROAD, ALONG AN ABANDONED PORTION OF AN ASPHALT ROAD (A FORMER ALIGNMENT OF THE BOULEVARD), IN THE TOP OF A CONCRETE RETAINING WALL, 35 FEET SOUTHEAST OF THE CENTER LINE OF THE SOUTHEAST LANES OF THE BOULEVARD, 55.8 FEET NORTHEAST AND ACROSS THE ABANDONED ROAD FROM BENCH MARK C 572 (EBMUD), 16 FEET NORTHWEST OF THE CENTER LINE OF THE ABANDONED ROAD, 1 FOOT NORTHWEST OF A WITNESS POST, ABOUT 8 FEET HIGHER THAN THE HIGHWAY, ABOUT LEVEL WITH THE ABANDONED ROAD, AND ABOUT LEVEL WITH THE GROUND. NOTE-- USGS REPORTED THAT SLIDES HAVE COVERED THE RETAINING WALL WHERE THE MARKS WERE PLACED. ROAD CONSTRUCTION IN THIS AREA MAY EVENTUALY DESTROY THE RETAINING WALL. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HT0164 657.09 http://www.geocaching.com/mark/details.asp?PID=HT0164 657.09 Geocache Geocache 657.09 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>657.09</h1> <b> PID </b> HT0164 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> LAS TRAMPAS RIDGE (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 52 20. (N) 122 07 25. (W) SCALED <br> <b> NAVD 88 </b> 201.32 (+/-2cm) 660.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.15 (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> 653,530. </td><td> 1,857,160. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 200.470 (m) 657.71 (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: 10SEG770920(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE MANHOLE <br>STAMPING: 657.09 <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>1939 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1962 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1939 1.8 MI S FROM LAFAYETTE. 1.8 MILES SOUTH ALONG JONAS HILL ROAD FROM THE POST OFFICE AT LAFAYETTE, CONTRA COSTA COUNTY, AT THE CREST OF A HILL, 12 FEET NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, AND IN THE TOP OF A CONCRETE MANHOLE STRUCTURE 83+67.74. AN EAST BAY MUNICIPAL UTILITIES DISTRICT STANDARD DISK, STAMPED 657.09. NOTE-- THIS MARK WAS ON A LARGE CONCRETE SEWER STRUCTURE IN THE ROAD, AND NEW PAVING HAS PROBABLY BURIED RATHER THAN DESTROYED IT. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 MARK NOT FOUND. HT0074 658.45 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0074 658.45 EBMUD Geocache Geocache 658.45 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>658.45 EBMUD</h1> <b> PID </b> HT0074 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 07. (N) 122 11 44. (W) SCALED <br> <b> NAVD 88 </b> 201.72 (+/-2cm) 661.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 655,090. </td><td> 1,850,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 200.87 (m) 659.0 (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: 10SEG707933(NAD 83) <br>MARKER: S = SPIKE <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: OAK TREE STUMP <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>EBMUD</td></tr><tr><td>1958 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>1987 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 0.6 MI W FROM ORINDA. 0.6 MILE WEST ALONG EL TOYONAL FROM ORINDA, CONTRA COSTA COUNTY, 200 FEET WEST OF A SIDE ROAD LEADING SOUTH, 150 FEET EAST OF A WOODEN TWO-STORY HOUSE ON EL TOYONAL, AND IN THE BASE OF AN OAK TREE STUMP. A TRACK SPIKE. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. HS3643 669 USGS http://www.geocaching.com/mark/details.asp?PID=HS3643 669 USGS Geocache Geocache 669 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>669 USGS</h1> <b> PID </b> HS3643 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BYRON HOT SPRINGS (1968) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 52 13. (N) 121 38 29. (W) SCALED <br> <b> NAVD 88 </b> 10.41 (+/-2cm) 34.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.25 (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> 652,690. </td><td> 1,899,580. </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: 10SFG194922(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE FOUNDATION <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>USGS</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 AT BYRON. 0.1 MILE NORTHWEST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE POST OFFICE AT BYRON, AT THE CROSSING OF WASHINGTON STREET, AT ELECTRIC SIGNAL 66.9, IN THE TOP OF THE SOUTHWEST CORNER OF THE CONCRETE FOUNDATION, 34.3 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE MAIN TRACK, 23 FEET WEST OF THE CENTER LINE OF THE STREET, AND ABOUT LEVEL WITH THE GROUND. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0939 71+81.03 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0939 71+81.03 EBMUD Geocache Geocache 71+81.03 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>71+81.03 EBMUD</h1> <b> PID </b> HT0939 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> SAN QUENTIN (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 56 26. (N) 122 24 36. (W) SCALED <br> <b> NAVD 88 </b> 8.91 (+/-2cm) 29.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.28 (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> 661,590. </td><td> 1,832,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 8.11 (m) 26.6 (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: 10SEG518993(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: 71+81.03 <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>EBMUD</td></tr><tr><td>1956 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 0.5 MI N FROM POINT RICHMOND. 0.5 MILE NORTH OF THE RICHMOND-SAN RAFAEL FERRY AT POINT RICHMOND, CONTRA COSTA COUNTY, 55 FEET SOUTH OF A T-ROAD LEADING EAST, AND AT THE WEST EDGE OF THE OILED PORTION OF A PRIVATE ROAD TO SAN PABLO. AN EAST BAY MUNICIPAL UTILITIES DISTRICT STANDARD DISK, STAMPED 71+81.03 AND SET IN THE TOP OF A 4-1/2 INCH CONCRETE-FILLED PIPE SET IN CONCRETE FLUSH WITH THE GROUND. HS3660 719 USGS http://www.geocaching.com/mark/details.asp?PID=HS3660 719 USGS Geocache Geocache 719 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>719 USGS</h1> <b> PID </b> HS3660 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 48 50. (N) 121 34 48. (W) SCALED <br> <b> NAVD 88 </b> 7.13 (+/-2cm) 23.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.19 (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> 646,370. </td><td> 1,904,910. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.40 (m) 21.0 (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: 10SFG249861(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SEMAPHORE <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>1958 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 5 MI SE FROM BYRON. 5.0 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC CO. RAILROAD FROM THE STATION AT BYRON, CONTRA COSTA COUNTY, 800 FEET SOUTHEAST OF THE ROAD CROSSING AT HERDLYN, AND IN THE TOP OF THE CONCRETE BASE OF SEMAPHORE 719. A COPPER NAIL AND WASHER. HS3627 81.09 USBR http://www.geocaching.com/mark/details.asp?PID=HS3627 81.09 USBR Geocache Geocache 81.09 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>81.09 USBR</h1> <b> PID </b> HS3627 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 59 00. (N) 121 44 37. (W) SCALED <br> <b> NAVD 88 </b> 25.47 (+/-2cm) 83.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.33 (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> 665,350. </td><td> 1,890,760. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 24.734 (m) 81.15 (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: 10SFH103047(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE SIPHON <br>STAMPING: 81.09 <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>BOR</td></tr><tr><td>1957 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1957 3.5 MI E FROM ANTIOCH. 3.5 MILES EAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT ANTIOCH, 4.5 MILES NORTHWEST OF BRENTWOOD, IN R2E T2N, NEAR THE SOUTHEAST CORNER OF THE SOUTHWEST QUARTER OF SECTION 27, 0.3 MILE SOUTHEAST OF MILEPOLE 57, AT THE CROSSING OF CONTRA COSTA CANAL, AT THE T JUNCTION OF NEROLY AND LAUREL ROADS, AT CONCRETE SIPHON 6.7 UNDER NEROLY ROAD AND THE TRACK, IN THE TOP OF THE CENTER OF THE NORTHEAST CONCRETE HEAD WALL, 14 FEET NORTHEAST OF THE CENTER LINE OF THE ROAD, 1.4 FEET NORTHEAST OF A FENCE AROUND THE HEAD WALL, AND ABOUT LEVEL WITH THE ROAD. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT1016 818.33=818.597 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT1016 818.33=818.597 EBMUD Geocache Geocache 818.33=818.597 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>818.33=818.597 EBMUD</h1> <b> PID </b> HT1016 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 17. (N) 122 16 12. (W) SCALED <br> <b> NAVD 88 </b> 250.36 (+/-2cm) 821.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.21 (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> 657,370. </td><td> 1,844,360. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 249.509 (m) 818.60 (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: 10SEG641954(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE BLOCK <br>STAMPING: 818.597 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 AT EL CERRITO. AT EL CERRITO, AT THE SOUTH SIDE OF THE SUMMIT RESERVOIR, SET IN THE TOP OF A CONCRETE BLOCK PROJECTING 0.5 FOOT ABOVE A CONCRETE WALL, 4 FEET NORTH OF THE CENTER OF A DOOR TO A SMALL TOOL HOUSE, AND 0.5 FOOT WEST OF THE WEST SIDE OF THE TOOL HOUSE. NOTE-- THE MARK WAS PREVIOUSLY DESIGNATED AS 818.33 (EBW CO.) AND DESCRIBED IN 1934 AS STAMPED 818.33. HS3630 86.377 EBMUD http://www.geocaching.com/mark/details.asp?PID=HS3630 86.377 EBMUD Geocache Geocache 86.377 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>86.377 EBMUD</h1> <b> PID </b> HS3630 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 57 15. (N) 121 43 00. (W) SCALED <br> <b> NAVD 88 </b> 27.13 (+/-2cm) 89.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.31 (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> 662,080. </td><td> 1,893,080. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 26.391 (m) 86.58 (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: 10SFH127015(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: P 2998+02.92 ELEV 86.377 <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>EBMUD</td></tr><tr><td>1951 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1963 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1951 1.9 MI NW FROM BRENTWOOD. 1.9 MILES NORTHWEST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT BRENTWOOD, AT A CONCRETE BRIDGE OVER THE EAST BAY MUNICIPAL UTILITY DISTRICT TWIN 60-INCH PIPES, IN THE TOP OF THE SOUTHWEST CONCRETE HEADWALL, 87 FEET NORTHEAST OF THE CENTER LINE OF A PAVED ROAD, 5.6 FEET SOUTHWEST OF THE SOUTHWEST RAIL, 7.6 FEET SOUTHEAST OF THE NORTHWEST END OF THE HEADWALL, 0.7 FEET WEST OF AN IRON GUARD RAIL POST, AND SET ABOUT 1 1/2 FEET LOWER THAN THE TRACK. SECTION 2, T 1 N, R 2 E. <p> <h2>STATION RECOVERY (1963) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1963 RECOVERED IN GOOD CONDITION. HT0124 87.61 USBR http://www.geocaching.com/mark/details.asp?PID=HT0124 87.61 USBR Geocache Geocache 87.61 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>87.61 USBR</h1> <b> PID </b> HT0124 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 58 17. (N) 122 04 29. (W) SCALED <br> <b> NAVD 88 </b> 27.61 (+/-2cm) 90.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.10 (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> 664,460. </td><td> 1,861,650. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 26.808 (m) 87.95 (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: 10SEH812030(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 87.61 <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>BOR</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.4 MI S FROM PACHECO. 0.8 MILE SOUTH ALONG STATE HIGHWAY 21 FROM THE TOWN HALL AT PACHECO, THENCE 0.6 MILE WEST ALONG GOLF CLUB ROAD, AT A CONCRETE BRIDGE OVER CONTRA COSTA CANAL, IN THE TOP OF THE NORTH CONCRETE CURB, 13 FEET NORTH OF THE CENTER LINE OF THE ROAD, 4.6 FEET WEST OF THE EAST END OF THE CURB, AND ABOUT 1 FOOT HIGHER THAN THE ROAD. HT0072 876.60 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0072 876.60 EBMUD Geocache Geocache 876.60 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>876.60 EBMUD</h1> <b> PID </b> HT0072 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 05. (N) 122 12 07. (W) SCALED <br> <b> NAVD 88 </b> 268.22 (+/-2cm) 880.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 655,040. </td><td> 1,850,300. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 267.36 (m) 877.2 (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: 10SEG701933(NAD 83) <br>MARKER: S = SPIKE <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: OAK TREE <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>EBMUD</td></tr><tr><td>1958 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.1 MI W FROM ORINDA. 1.1 MILES WEST ALONG EL TOYONAL FROM ORINDA, CONTRA COSTA COUNTY, 0.1 MILE WEST OF A U-TURN, 12 FEET NORTH OF THE CENTERLINE OF THE ROAD, AND IN THE BASE OF A 30-INCH OAK TREE. A TRACK SPIKE, REFERENCED BY A STAKE NAILED TO THE BASE OF THE TREE. HT1018 881.49 EBWCO http://www.geocaching.com/mark/details.asp?PID=HT1018 881.49 EBWCO Geocache Geocache 881.49 EBWCO EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>881.49 EBWCO</h1> <b> PID </b> HT1018 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> RICHMOND (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 39. (N) 122 16 25. (W) SCALED <br> <b> NAVD 88 </b> 269.60 (+/-2cm) 884.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.21 (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> 658,050. </td><td> 1,844,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 268.754 (m) 881.74 (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: 10SEG638961(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: CONCRETE FOUNDATION <br>STAMPING: 881.49 <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>EBMUD</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 AT EL CERRITO. AT EL CERRITO, 0.6 MILE NORTH OF THE SUMMIT RESERVOIR, AT THE SITE OF THE OLD PURDUE TANK (LONG SINCE REMOVED), IN THE NORTHEAST PART OF THE BACK YARD OF THE PROPERTY AT 141 PURDUE AVENUE, AND IN THE TOP OF THE SOUTHWEST END OF THE NORTHWEST CONCRETE FOUNDATION PROJECTING 1 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (RAS) RECOVERED IN GOOD CONDITION. HT0156 9+00 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0156 9+00 EBMUD Geocache Geocache 9+00 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>9+00 EBMUD</h1> <b> PID </b> HT0156 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 31. (N) 122 12 08. (W) SCALED <br> <b> NAVD 88 </b> 112.86 (+/-2cm) 370.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 655,840. </td><td> 1,850,290. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 112.007 (m) 367.48 (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: 10SEG701941(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: CL 9+00 <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>EBMUD</td></tr><tr><td>1935 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>1962 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>19870120</td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 0.7 MI NW FROM ORINDA. 0.7 MILE NORTHWEST ALONG SAN PABLO CREEK ROAD FROM ORINDA, CONTRA COSTA COUNTY, AT THE EAST BAY MUNICIPAL UTILITY DISTRICT ORINDA FILTER PLANT, 425 FEET NORTHEAST OF THE ROAD, 900 FEET NORTHWEST OF THE CONCRETE SCREENING CHAMBER, 215 FEET WEST OF THE WEST END OF THE FILTER BUILDING, ON ITS CENTERLINE, AND 2 INCHES UNDERGROUND. AN EAST BAY MUNICIPAL UTILITY DISTRICT STANDARD DISK, STAMPED CL 9+00 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 MARK NOT FOUND. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) MARK NOT FOUND. AE9894 92.202 EBMUD http://www.geocaching.com/mark/details.asp?PID=AE9894 92.202 EBMUD Geocache Geocache 92.202 EBMUD EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <h1>92.202 EBMUD</h1> <b> PID </b> AE9894 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRENTWOOD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 57 14.80719(N) 121 43 12.92135(W) ADJUSTED <br> <b> NAVD 88 </b> 28.98 (meters) 95.1 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 2000.86 <br> <b> X </b> -2,647,558.955 (meters) COMP <br> <b> Y </b> -4,283,375.386 (meters) COMP <br> <b> Z </b> 3,901,427.149 (meters) COMP <br> <b> LAPLACE CORR</b> -2.56 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -3.28 (meters) (11/27/02) GPS OBS <br> <b> GEOID HEIGHT</b> -32.31 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> B <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in November 2002. 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>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> 662,078.949 1</td><td>892,765.132</td><td> MT </td><td>0.99993544</td><td> -0 ' 44 49.5"</td></tr><tr><td>SPC CA 3 </td><td>2,172,170.69 6</td><td>209,846.94 </td><td> sFT </td><td>0.99993544</td><td> -0 ' 44 49.5"</td></tr><tr><td>UTM 10 </td><td>4,201,496.103 </td><td>612,430.385</td><td> MT </td><td>0.99975569</td><td> +0 ' 47 13.8"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000051 x 0.99993544 = 0.99993595 <br> <b>UTM 10 </b> 1.00000051 x 0.99975569 = 0.99975620 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 37 57 14.80540(N) 121 43 12.92001(W) AD(1997.30) 1 <br> ELLIP H (07/10/98) -3.31 (m) GP(1997.30) 4 1 <br> <b> NAD 83(1992)</b> 37 57 14.80497(N) 121 43 12.92030(W) AD(1997.30) 1 <br> ELLIP H (05/14/98) -3.21 (m) GP(1997.30) 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: 10SFH1243001496(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: LIGHT STRUCTURE <br>STAMPING: P 3007+60.30 ELEV 92.202 <br>MARK LOGO: EBMUD <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 - August 17, 2004 <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>EBMUD</td></tr><tr><td>20010114</td><td>GOOD </td><td>FRAME</td></tr><tr><td>20040817</td><td>GOOD </td><td>BESTOR</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY EAST BAY MUNICIPAL UTILITIES DISTRICT 1930 THE STATION IS 3 MI (4.8 KM) SOUTH OF OAKLEY AND 2 MI (3.2 KM) NORTHWEST OF BRENTWOOD ALONG THE MOKELUMNE AQUEDUCT PIPELINE. TO REACH THE STATION FROM THE INTERSECTION OF BRENTWOOD BOULEVARD (STATE HIGHWAY 4) AND BALFOUR ROAD, JUST SOUTH OF BRENTWOOD, GO WEST ON BALFOUR ROAD FOR 1.8 MI (2.9 KM) TO THE INTERSECTION OF FAIRVIEW AVENUE, A SIDE ROAD RIGHT. TURN RIGHT AND GO NORTH ON FAIRVIEW AVENUE FOR 2.0 MI (3.2 KM) TO THE INTERSECTION OF MINNESOTA AVENUE, A SIDE ROAD RIGHT. TURN RIGHT AND GO EAST FOR 0.12 MI (0.19 KM) TO AN UNNAMED PAVED SIDE ROAD ON THE LEFT (NORTH) , TURN LEFT ONTO THE PAVED SIDE ROAD AND THE STATION ON THE RIGHT. THE STATION IS AN EAST BAY MUNICIPAL UTILITY DISTRICT (EBMUD) SURVEY DISK IN THE MOKELUMNE AQUEDUCT RIGHT-OF-WAY, SET IN THE TOP OF A 5-FT X 5-FT SQUARE CONCRETE MANHOLE STRUCTURE (THE MIDDLE OF THREE PROJECTING STRUCTURES) , LABELED STA 3008. THE STATION IS 55 FT (16.8 M) NORTH OF THE CENTERLINE OF MINNESOTA AVENUE, 39 FT (11.9 M) NORTH OF THE CENTER OF A CEMENT-BAGGED CULVERT FOR A DITCH UNDER THE ACCESS ROAD, 14.5 FT (4.4 M) EAST OF THE EDGE OF PAVEMENT OF THE ACCESS ROAD, CENTERED IN THE WEST EDGE OF THE STRUCTURE AND 0.5 FT (0.2 M) EAST OF THE WEST EDGE. THE STATION IS 2.5 FT (0.8 M) SOUTH OF A CARSONITE WITNESS POST. THE STATION WAS OCCUPIED AS PART OF THE SAN JOAQUIN-SACRAMENTO RIVER DELTA GPS/VERTICAL PROJECT. <p> <h2>STATION RECOVERY (2001) </h2> <p>RECOVERY NOTE BY FRAME SURVEYING AND MAPPING 2001 (JHF) RECOVERED AS DESCRIBED. <p> <h2>STATION RECOVERY (2004) </h2> <p>RECOVERY NOTE BY BESTOR ENGINEERS INCORPORATED 2004 (DT) RECOVERED IN GOOD CONDITION. AH7471 941 4863 103 http://www.geocaching.com/mark/details.asp?PID=AH7471 941 4863 103 Geocache Geocache 941 4863 103 Unknown Cache Regular 1 1 United States California NGS Datasheet <b> FBN </b> This is a Federal Base Network Control Station. <br> <h1>941 4863 103</h1> <b> PID </b> AH7471 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> SAN QUENTIN (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 37 55 45.62769(N) 122 23 59.08348(W) ADJUSTED <br> <b> NAVD 88 </b> 2.9 (meters) 10. (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,699,064.373 (meters) COMP <br> <b> Y </b> -4,253,086.682 (meters) COMP <br> <b> Z </b> 3,899,242.677 (meters) COMP <br> <b> LAPLACE CORR</b> 0.64 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -29.39 (meters) (04/06/00) GPS OBS <br> <b> GEOID HEIGHT</b> -32.30 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> A <br> <b> ELLP ORDER </b> THIRD CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in April 2000. 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> 660,325.462 1</td><td>833,003.205</td><td> MT </td><td>0.99993400</td><td> -1 ' 09 47.1"</td></tr><tr><td>SPC CA 3 </td><td>2,166,417.79 6</td><td>013,778.02 </td><td> sFT </td><td>0.99993400</td><td> -1 ' 09 47.1"</td></tr><tr><td>UTM 10 </td><td>4,198,145.164 </td><td>552,751.513</td><td> MT </td><td>0.99963427</td><td> +0 ' 22 08.3"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000461 x 0.99993400 = 0.99993861 <br> <b>UTM 10 </b> 1.00000461 x 0.99963427 = 0.99963888 <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: 10SEG5275298145(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>SP_SET: CONCRETE SEAWALL <br>STAMPING: BM 103 EL. 8.94 <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 - April 28, 1998 <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>19980428</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (CSM) THE STATION IS LOCATED ON THE WEST EDGE OF RICHMOND, NEAR THE SOUTHEAST END OF THE INTERSTATE HIGHWAY 580 BAY BRIDGE (RICHMOND-SAN RAFAEL TOLL BRIDGE), NEAR THE NORTH-NORTHEAST END OF THE CHEVRON FUELING PIER CAUSEWAY, IN TOP OF AND NEAR THE SOUTH END OF THE EAST SALT WATER INLET CHANNEL SEAWALL WITH A YELLOW PIPE HANDRAIL. OWNERSHIP--CHEVRON OIL COMPANY, RICHMOND REFINERY. TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAYS 80 EAST AND 580 ABOUT 0.8 KM (0.50 MI) SOUTHEAST OF THE TOLL BOOTH AT THE SOUTHEAST END OF THE BRIDGE (1ST EXIT), GO NORTHWEST FOR 0.16 KM (0.10 MI) ON CHEVRON WAY THROUGH A STOP SIGN TO THE MAIN GATE AND GUARDHOUSE. CHECK IN AND GET MAP. CONTINUE NORTHWESTERLY FOR 0.4 KM (0.25 MI) ON CHEVRON WAY, THEN STANDARD AVE TO A STOP SIGN AT SCHOFIELD ST. TURN LEFT, SOUTHWEST FOR 0.72 KM (0.45 MI) ON THE STREET AND UNDER FREEWAY TO THE INSHORE END OF THE CHEVRON PIER/CAUSEWAY AND THE STATION ON THE RIGHT, IN THE SEAWALL. THE STATION IS AN OFF-CENTER PUNCH MARK ON THE TOP OF A 2-INCH BRASS SURVEY DISK. THE DATUM POINT IS OVER THE (0) IN 103 STAMPED ON THE DISK. LOCATED 24.7 M (81.0 FT) SOUTHWEST OF THE SOUTHEAST CORNER OF THE PUMPHOUSE NUMBER 3, 23.3 M (76.4 FT) WEST OF THE CENTER OF PAVED CAUSEWAY, 7.0 M (23.0 FT) SOUTH-SOUTHWEST OF THE EXTENDED CENTER OF A SMALL WOOD DECKED BRIDGE, 1.5 M (4.9 FT) NORTH OF THE SOUTH END OF THE SEAWALL, 1.0 M (3.3 FT) SOUTH OF A FIBERGLASS WITNESS POST, ABOUT LEVEL WITH THE GROUND SURFACE AND FLUSH WITH THE TOP OF THE SEAWALL. HT0935 941 4863 TIDAL 5 http://www.geocaching.com/mark/details.asp?PID=HT0935 941 4863 TIDAL 5 Geocache Geocache 941 4863 TIDAL 5 DOD USE Unknown Cache Regular 1 1 United States California NGS Datasheet <b> HT_MOD </b> This is a Height Modernization Survey Station. <br> <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 4863 TIDAL 5</h1> <b> PID </b> HT0935 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> SAN QUENTIN (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 37 55 46.78984(N) 122 24 01.35371(W) ADJUSTED <br> <b> NAVD 88 </b> 3.80 (meters) 12.5 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1997.30 <br> <b> X </b> -2,699,099.771 (meters) COMP <br> <b> Y </b> -4,253,038.991 (meters) COMP <br> <b> Z </b> 3,899,271.505 (meters) COMP <br> <b> LAPLACE CORR</b> 0.64 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.47 (meters) (07/10/98) GPS OBS <br> <b> GEOID HEIGHT</b> -32.30 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <b> VERT ORDER </b> FIRST CLASS II (See Below) <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 National Geodetic Survey in July 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 orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques. The vertical order pertains to the NGVD 29 superseded value. <p>This Tidal Bench Mark is designated as VM 8455 by the Center for Operational Oceanographic Products and Services. <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> 660,362.409 1</td><td>832,948.506</td><td> MT </td><td>0.99993402</td><td> -1 ' 09 48.5"</td></tr><tr><td>SPC CA 3 </td><td>2,166,539.00 6</td><td>013,598.56 </td><td> sFT </td><td>0.99993402</td><td> -1 ' 09 48.5"</td></tr><tr><td>UTM 10 </td><td>4,198,180.624 </td><td>552,695.862</td><td> MT </td><td>0.99963420</td><td> +0 ' 22 06.9"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000447 x 0.99993402 = 0.99993849 <br> <b>UTM 10 </b> 1.00000447 x 0.99963420 = 0.99963867 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 37 55 46.78808(N) 122 24 01.35262(W) AD(1995.42) 1 <br> ELLIP H (12/22/97) -28.42 (m) GP( ) 4 1 <br> NGVD 29 (??/??/92) 2.982 (m) 9.78 (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: 10SEG5269698181(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: 5 <br>MARK LOGO: USE <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>DOD</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1959 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1995 </td><td>GOOD </td><td>DOD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT RICHMOND. AT RICHMOND, IN R5W T1N, AT THE STANDARD OIL COMPANY REFINERY, 112 FEET WEST OF THE SOUTHWEST CORNER OF THE PUMPHOUSE, IN THE TOP OF A 12- BY 13-FOOT CONCRETE BLOCK WHICH IS FLUSH WITH THE GROUND ON THE EAST SIDE AND PROJECTS ABOUT 9 FEET ABOVE THE BAY ON THE WEST SIDE, 5.7 FEET NORTHEAST OF BENCH MARK TIDAL 2, AND 3.2 FEET NORTH OF THE SOUTH EDGE OF THE BLOCK. <p> <h2>STATION RECOVERY (1959) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1959 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1995) </h2> <p>RECOVERY NOTE BY US DEPARTMENT OF DEFENSE 1995 THE STATION IS AT THE CHEVRON REFINERY AT THE WEST END OF RICHMOND. TO REACH THE STATION FROM THE MAIN GATE TO THE CHEVRON RICHMOND REFINERY (NORTHWEST OF THE CASTRO STREET EXIT OF INTERSTATE HIGHWAY 580) GO NORTHWEST ON STANDARD AVENUE FOR 0.3 MI (0.5 KM) TO THE INTERSECTION OF SCHOFIELD AVENUE. TURN LEFT AND GO WESTERLY ON SCHOFIELD AVENUE FOR 0.45 MI (0.72 KM) PASSING UNDER HIGHWAY 580 TO A PUMPHOUSE ON THE RIGHT AND THE STATION TO THE NORTHWEST ACROSS A SERIES OF MISCELLANEOUS SIZED PIPES. THE STATION IS SET IN THE TOP OF A 12 FT (3.7 M) BY 12 FT (3.7 M) CONCRETE BLOCK. IT IS 40.8 FT (12.4 M) NORTHWEST OF A 9 FT (2.7 M) TALL SIGN, 350 FT, 17.2 FT (5.2 M) NORTHWEST OF THE NORTHWESTERN MOST PIPELINE AND 3.0 FT (0.9 M) EAST OF THE WEST EDGE OF THE CONCRETE BLOCK. JT0566 941 5056 TIDAL 1 http://www.geocaching.com/mark/details.asp?PID=JT0566 941 5056 TIDAL 1 Geocache Geocache 941 5056 TIDAL 1 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 5056 TIDAL 1</h1> <b> PID </b> JT0566 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> MARE ISLAND (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 38. (N) 122 21 51. (W) SCALED <br> <b> NAVD 88 </b> 8.02 (+/-2cm) 26.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.27 (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> 669,280. </td><td> 1,836,310. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 7.227 (m) 23.71 (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: 10SEH558071(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: RETAINING WALL <br>STAMPING: B M 1 1931 <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>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT PINOLE POINT. AT PINOLE POINT, IN T2N R5W, AT THE ATLAS POWDER COMPANY GIANT DIVISION, ABOUT 207 FEET SOUTHWEST OF THE SOUTH END OF THE COMPANY DOCK, AT MAGAZINE 84, AT THE FOOT OF A DIRT BULKHEAD ON THE NORTHEAST SIDE OF THE MAGAZINE, IN THE TOP OF A BURIED CONCRETE BASE FOR A FORMER RETAINING WALL, 34.7 FEET EAST OF THE EAST CORNER OF THE MAGAZINE, 4.8 FEET NORTHEAST OF THE NORTHEAST RAIL OF A RAILROAD TRACK, 3.8 FEET NORTHWEST OF THE SOUTHEAST END OF THE BASE, ABOUT LEVEL WITH THE TRACK, AND ABOUT 1/2 FOOT UNDERGROUND. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1961 RECOVERED IN GOOD CONDITION. JT0567 941 5056 TIDAL 2 http://www.geocaching.com/mark/details.asp?PID=JT0567 941 5056 TIDAL 2 Geocache Geocache 941 5056 TIDAL 2 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 5056 TIDAL 2</h1> <b> PID </b> JT0567 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> MARE ISLAND (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 38. (N) 122 21 50. (W) SCALED <br> <b> NAVD 88 </b> 7.89 (+/-2cm) 25.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.27 (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> 669,270. </td><td> 1,836,330. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 7.099 (m) 23.29 (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: 10SEH558071(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: RETAINING WALL <br>STAMPING: B M 2 1931 <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>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT PINOLE POINT. AT PINOLE POINT, IN T2N R5W, AT THE ATLAS POWDER COMPANY GIANT DIVISION, ABOUT 200 FEET SOUTHWEST OF THE SOUTH END OF THE COMPANY DOCK, AT THE FOOT OF A DIRT BULKHEAD ON THE NORTHEAST SIDE OF MAGAZINE 84, IN TOP OF A BURIED CONCRETE BASE FOR A FORMER RETAINING WALL, 165.6 FEET NORTHWEST OF BENCH MARK TIDAL 1, 71.7 FEET NORTHWEST OF THE NORTH CORNER OF THE MAGAZINE, 5.0 FEET NORTHEAST OF THE NORTHWEST END OF THE NORTHEAST RAIL OF A RAILROAD ALONG THE NORTHEAST SIDE OF THE MAGAZINE, 3.7 FEET NORTHWEST OF THE NORTHEAST END OF A 6-INCH IRON PIPE CULVERT UNDER THE TRACK, ABOUT 1/2 FOOT HIGHER THAN THE TRACK, AND ABOUT 1/2 FOOT UNDERGROUND. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1961 RECOVERED IN GOOD CONDITION. JT0565 941 5056 TIDAL 3 http://www.geocaching.com/mark/details.asp?PID=JT0565 941 5056 TIDAL 3 Geocache Geocache 941 5056 TIDAL 3 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 5056 TIDAL 3</h1> <b> PID </b> JT0565 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> MARE ISLAND (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 42. (N) 122 22 04. (W) SCALED <br> <b> NAVD 88 </b> 6.67 (+/-2cm) 21.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.26 (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> 669,400. </td><td> 1,836,000. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 5.870 (m) 19.26 (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: 10SEH554072(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: BULK HEAD BASE <br>STAMPING: B M 3 1931 <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>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1956 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1961 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT PINOLE POINT. AT PINOLE POINT, IN T2N R5W, AT THE ATLAS POWDER COMPANY GIANT DIVISION, ABOUT 400 FEET SOUTH OF THE SOUTH END OF THE COMPANY DOCK, AT MAGAZINE 262, AT A TIMBER AND EARTH BULKHEAD ON THE EAST SIDE OF THE MAGAZINE, IN THE TOP OF THE CONCRETE BASE FOR THE BULKHEAD, 29.8 FEET NORTH OF AND ACROSS A NARROW GAGE RAILROAD FROM THE NORTHEAST CORNER OF THE MAGAZINE, 5.6 FEET SOUTH OF THE NORTH END OF THE BASE, 2.0 FEET EAST OF THE EAST RAIL, 0.8 FOOT WEST OF THE WEST EDGE OF THE BULKHEAD, AND ABOUT 1/4 FOOT HIGHER THAN THE TRACK. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1961 RECOVERED IN GOOD CONDITION. AH7472 941 5144 H TIDAL http://www.geocaching.com/mark/details.asp?PID=AH7472 941 5144 H TIDAL Geocache Geocache 941 5144 H TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> FBN </b> This is a Federal Base Network Control Station. <br> <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 5144 H TIDAL</h1> <b> PID </b> AH7472 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 38 03 18.94034(N) 122 02 18.37780(W) ADJUSTED <br> <b> NAVD 88 </b> 3.4 (meters) 11. (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,667,627.194 (meters) COMP <br> <b> Y </b> -4,262,729.697 (meters) COMP <br> <b> Z </b> 3,910,257.934 (meters) COMP <br> <b> LAPLACE CORR</b> -0.96 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -28.77 (meters) (04/06/00) GPS OBS <br> <b> GEOID HEIGHT</b> -32.16 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> A <br> <b> ELLP ORDER </b> THIRD CLASS I <br> <p>ITRF positions are available for this station. The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in April 2000. 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>This Tidal Bench Mark is designated as VM 994 by the Center for Operational Oceanographic Products and Services. <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> 673,715.960 1</td><td>864,990.387</td><td> MT </td><td>0.99994323</td><td> -0 ' 56 30.8"</td></tr><tr><td>SPC CA 3 </td><td>2,210,349.78 6</td><td>118,722.63 </td><td> sFT </td><td>0.99994323</td><td> -0 ' 56 30.8"</td></tr><tr><td>UTM 10 </td><td>4,212,382.772 </td><td>584,360.120</td><td> MT </td><td>0.99968765</td><td> +0 ' 35 33.9"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000451 x 0.99994323 = 0.99994774 <br> <b>UTM 10 </b> 1.00000451 x 0.99968765 = 0.99969216 <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: 10SEH8436012383(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 45 = UNSPECIFIED DEEP UNSLEEVED SETTING (10 FT.+) <br>STAMPING: 5144 H 1976 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 20 CENTIMETERS <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 - April 29, 1998 <br>ROD/PIPE-DEPTH: 10.0 meters <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>19970401</td><td>GOOD </td><td>NGS</td></tr><tr><td>19980429</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1997 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1998) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (CSM) THE STATION IS LOCATED NEAR THE SOUTH SIDE OF SUISUN BAY, ABOUT 8 KM (4.95 MI) NORTHEAST OF MARTINEZ, 9.6 KM (5.95 MI) NORTH-NORTHEAST OF CONCORD, 9.6 KM (5.95 MI) NORTHWEST OF WEST PITTSBURG, AT THE PORT CHICAGO CONCORD NAVAL WEAPONS STATION, NEAR THE INSHORE END OF THE TUG PIER, IN THE SOUTHEAST QUADRANT OF THE JUNCTION OF JOHNSON RD AND WHITE ROADS, IN A GRASS STRIP BETWEEN BUILDING A-16 AND A RAILROAD TRACK. OWNERSHIP--U.S. NAVY. TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 4 AND PORT CHICAGO HIGHWAY, ABOUT 1.6 KM (1.00 MI) NORTHEAST OF THE JUNCTION OF INTERSTATE HIGHWAY 680, GO NORTH FOR 1.2 KM (0.75 MI) ON PORT CHICAGO HIGHWAY TO A STOP SIGN. TURN RIGHT, SOUTHEAST FOR 0.16 KM (0.10 MI) TO A BUILDING AND A PARKING LOT ON THE RIGHT OF A GUARDHOUSE AND GATE. CHECK IN AND GET A PASS. FROM THE STOP SIGN ON PORT CHICAGO HIGHWAY, GO NORTH-NORTHWEST FOR 0.08 KM (0.05 MI), BEARING LEFT THROUGH A GUARDED GATE (CHECK IN) AND CONTINUE NORTH FOR 3.2 KM (2.00 MI) ON THE ROAD AND ALONG THE RAILROAD TRACKS UNTIL CROSSING A BRIDGE, BEAR LEFT AT A FORK ONTO JOHNSON ROAD. CONTINUE NORTHERLY FOR 0.96 KM (0.60 MI) ON THE ROAD TO THE JUNCTION OF WHITE RD AND THE STATION ON THE RIGHT, IN THE GRASS STRIP. THE STATION IS A PUNCH MARK ON THE TOP CENTER OF A DISK CRIMPED TO THE TOP OF AN UNSPECIFIED ROD WITHOUT SLEEVE ABOUT FLUSH WITH GROUND, ENCASED IN A 4-INCH PVC PIPE WITH SCREW CAP PROJECTING 20 CM ABOVE GROUND. LOCATED ABOUT 97 M (318.2 FT) SOUTHEAST OF THE INSHORE END OF THE TUG PIER, 50.0 M (164.0 FT) EAST OF THE CENTER OF JOHNSON ROAD, 30.0 M (98.4 FT) WEST OF THE WESTERLY CORNER OF BUILDING A-16, 30.0 M (98.4 FT) SOUTH OF THE CENTER OF WHITE ROAD, 27.0 M (88.6 FT) NORTHEAST OF THE NORTHEAST CORNER OF BUILDING A-14, 14.6 M (47.9 FT) NORTHEAST OF THE NEAR RAIL AND 1.4 M (4.6 FT) EAST OF A 4-INCH WOOD POST WITH WITNESS SIGN. NOTE--A LARGE PAIR OF CHANNEL-LOCKS OR PIPE WRENCH IS NEEDED TO REMOVE SCREW CAP. AE7867 941 5144 J TIDAL http://www.geocaching.com/mark/details.asp?PID=AE7867 941 5144 J TIDAL Geocache Geocache 941 5144 J 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> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 5144 J TIDAL</h1> <b> PID </b> AE7867 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> VINE HILL (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 38 03 09.55502(N) 122 02 09.14867(W) ADJUSTED <br> <b> NAVD 88 </b> 2.59 (meters) 8.5 (feet) GPS OBS <br> <hr> <b> EPOCH DATE </b> 1997.30 <br> <b> X </b> -2,667,530.758 (meters) COMP <br> <b> Y </b> -4,262,999.754 (meters) COMP <br> <b> Z </b> 3,910,029.605 (meters) COMP <br> <b> LAPLACE CORR</b> -0.80 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -29.53 (meters) (07/10/98) GPS OBS <br> <b> GEOID HEIGHT</b> -32.16 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> FIRST <br> <b> ELLP ORDER </b> FOURTH CLASS I <br> <p>The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in July 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 orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques. <p>This Tidal Bench Mark is designated as VM 999 by the Center for Operational Oceanographic Products and Services. <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> 673,422.946 1</td><td>865,210.598</td><td> MT </td><td>0.99994299</td><td> -0 ' 56 25.1"</td></tr><tr><td>SPC CA 3 </td><td>2,209,388.45 6</td><td>119,445.10 </td><td> sFT </td><td>0.99994299</td><td> -0 ' 56 25.1"</td></tr><tr><td>UTM 10 </td><td>4,212,095.834 </td><td>584,588.041</td><td> MT </td><td>0.99968812</td><td> +0 ' 35 39.5"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 3 </b> 1.00000463 x 0.99994299 = 0.99994762 <br> <b>UTM 10 </b> 1.00000463 x 0.99968812 = 0.99969275 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1992)</b> 38 03 09.55461(N) 122 02 09.14876(W) AD(1997.30) 1 <br> ELLIP H (03/20/98) -29.43 (m) GP(1997.30) 3 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: 10SEH8458812096(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+) <br>STAMPING: 5144 J 1976 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 10 CENTIMETERS <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 - April 01, 1997 <br>ROD/PIPE-DEPTH: 10 meters <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>19970401</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL OCEAN SERVICE 1976 THE STATION IS LOCATED ON THE PROPERTY OF THE NAVAL WEAPONS STATION CONCORD LOCATED IN PORT CHICAGO. TO REACH THE STATION FROM THE INTERSECTION OF STATE HIGHWAY 4 AND PORT CHICAGO HIGHWAY IN NORTH CONCORD GO NORTHERLY ON PORT CHICAGO HIGHWAY FOR 0.8 MI (1.3 KM) TO A SIDE ROAD LEFT WHICH IS THE ENTRANCE TO THE NAVAL WEAPONS STATION CONCORD. TURN LEFT AND THEN TURN RIGHT IMMEDIATELY AND GO 0.05 MI (0.08 KM) TO THE SECURITY GATE AND ENTRANCE TO THE WEAPONS STATION. CONTINUE NORTHERLY FOR ABOUT 2.05 MI (3.30 KM) TO THE INTERSECTION OF TAYLOR ROAD AND JOHNSON ROAD. TURN LEFT ON JOHNSON ROAD AND GO NORTH FOR ABOUT 0.3 MI (0.5 KM) TO THE STATION ON THE LEFT. THE STATION IS ABOUT 107 FT (32.6 M) NORTHWEST OF FIRE HYDRANT 216, 67 FT (20.4 M) SOUTHWEST OF THE MOST WESTERLY RAILROAD TRACK, 58 FT (17.7 M) SOUTHEAST OF A UTILITY POLE, 38 FT (11.6 M) SOUTHWEST OF THE CENTERLINE OF JOHNSON ROAD AND 3 FT (0.9 M) SOUTHEAST OF A WITNESS POST. THE STATION IS ENCASED IN A 4 IN PVC PIPE. <p> <h2>STATION RECOVERY (1997) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 RECOVERED IN GOOD CONDITION. HS3583 955 USGS http://www.geocaching.com/mark/details.asp?PID=HS3583 955 USGS Geocache Geocache 955 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>955 USGS</h1> <b> PID </b> HS3583 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLAYTON (1994) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 44. (N) 121 53 04. (W) SCALED <br> <b> NAVD 88 </b> 292.13 (+/-2cm) 958.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -31.81 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 657,630. </td><td> 1,878,270. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 291.301 (m) 955.71 (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: 10SEG980966(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STAMPING: 955 <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>1969 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 3.8 MI SE FROM CLAYTON. 3.85 MILES SOUTHEAST ALONG MARSH CREEK ROAD FROM THE POST OFFICE AT CLAYTON, AT THE SUMMIT OF A HILL, 33 FEET SOUTH OF THE CENTER LINE OF THE ROAD, 19 1/2 FEET NORTH OF THE CENTER LINE OF AN ASPHALT ROAD EAST TO A QUARRY, 87 FEET WEST OF A TELEPHONE POLE WITH A GUY WIRE, 14.2 FEET EAST OF THE NORTHEAST CORNER OF AN IRON PIPE GUARDRAIL OF AN UNDERGROUND VALVE, 10.0 FEET SOUTH OF A FENCE, 8 FEET HIGHER THAN THE ROAD, AND RIVETED ON THE TOP OF A 3 1/2-INCH IRON PIPE PROJECTING 1.2 FEET ABOVE THE GROUND. SEC 20, T1N, R1E. HT0071 991.72 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0071 991.72 EBMUD Geocache Geocache 991.72 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>991.72 EBMUD</h1> <b> PID </b> HT0071 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 52 59. (N) 122 12 05. (W) SCALED <br> <b> NAVD 88 </b> 303.30 (+/-2cm) 995.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 654,850. </td><td> 1,850,340. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 302.45 (m) 992.3 (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: 10SEG702931(NAD 83) <br>MARKER: S = SPIKE <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: OAK TREE <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>EBMUD</td></tr><tr><td>1958 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 1.3 MI W FROM ORINDA. 1.3 MILES WEST ALONG EL TOYONAL FROM ORINDA, CONTRA COSTA COUNTY, 0.3 MILE WEST OF A U-TURN, 20 FEET NORTHWEST OF THE CENTERLINE OF THE ROAD, AND IN THE BASE OF A 16-INCH LIVE OAK TREE. A TRACK SPIKE, REFERENCED BY A STAKE NAILED TO THE BASE OF THE TREE. JS1759 A 1107 CC CO http://www.geocaching.com/mark/details.asp?PID=JS1759 A 1107 CC CO Geocache Geocache A 1107 CC CO CA-013 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1107 CC CO</h1> <b> PID </b> JS1759 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH NORTH (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 45. (N) 121 47 12. (W) SCALED <br> <b> NAVD 88 </b> 17.83 (+/-2cm) 58.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.33 (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> 668,640. </td><td> 1,887,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 17.09 (m) 56.1 (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: 10SFH065078(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE CURB <br>STAMPING: A 1107 <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>CA-013</td></tr><tr><td>1960 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1966 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1960 1.7 MI E FROM ANTIOCH. 0.1 MILE WEST ALONG FOURTH STREET FROM THE POST OFFICE AT ANTIOCH, THENCE 0.1 MILE SOUTH ALONG G STREET, THENCE 0.4 MILE EAST ALONG A STREET, THENCE 1.0 MILE EAST ALONG WILBUR AVENUE, IN THE TOP AND 0.6 FOOT WEST OF THE EAST END OF THE EAST END OF THE NORTH CONCRETE CURB OF CONCRETE BRIDGE 28C54 OVER THE ATCHISON, TOPEKA AND SANTA FE RAILWAY, 16 FEET NORTH OF THE CENTER LINE OF THE AVENUE, AND ABOUT 1/2 FOOT HIGHER THAN THE AVENUE. <p> <h2>STATION RECOVERY (1966) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1966 RECOVERED IN GOOD CONDITION. HS3586 A 1203 http://www.geocaching.com/mark/details.asp?PID=HS3586 A 1203 Geocache Geocache A 1203 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1203</h1> <b> PID </b> HS3586 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> ANTIOCH SOUTH (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 54 03. (N) 121 51 58. (W) SCALED <br> <b> NAVD 88 </b> 191.10 (+/-2cm) 627.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -31.84 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 656,340. </td><td> 1,879,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 190.284 (m) 624.29 (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: 10SEG996954(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: A 1203 1969 <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>1969 </td><td>MONUMENTED </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1969 5.3 MI SE FROM CLAYTON. 5.3 MILES SOUTHEAST ALONG MARSH CREEK ROAD FROM THE POST OFFICE AT CLAYTON, 243 FEET EAST OF THE CENTER OF THE JUNCTION OF A DRIVEWAY SOUTH TO DIABLO VALLEY RANCH, IN THE TOP AND 1.1 FEET WEST OF THE EAST END OF THE SOUTH CONCRETE HEAD WALL OF A LARGE CONCRETE BOX CULVERT, 25 FEET SOUTH OF THE CENTER LINE OF THE ROAD, AND ABOUT 1/2 FOOT LOWER THAN THE ROAD. SECTION 28, T1N, R1E. JT0555 A 130 http://www.geocaching.com/mark/details.asp?PID=JT0555 A 130 Geocache Geocache A 130 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 130</h1> <b> PID </b> JT0555 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> MARE ISLAND (1980) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 38 00 20. (N) 122 17 25. (W) SCALED <br> <b> NAVD 88 </b> 7.18 (+/-2cm) 23.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.26 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS I (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> 668,590. </td><td> 1,842,790. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 6.366 (m) 20.89 (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: 10SEH623066(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONC PILLAR BASE <br>STAMPING: A 130 1932 20.883 <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>1932 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19941012</td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1969 AT PINOLE. AT PINOLE, 151 FEET NORTHEAST OF THE CENTER OF THE JUNCTION OF SAN PABLO AVENUE AND TENNENT AVENUE, ABOUT 200 FEET NORTH OF THE NEW FIRST WESTERN BANK BUILDING, AT THE FORMER FIRST WESTERN BANK BUILDING AT 2361 SAN PABLO AVENUE, IN THE TOP OF A CONCRETE BASE BETWEEN A ROUND PILLAR AND A SQUARE PILLAR, 9.5 FEET SOUTHEAST OF THE SOUTHEAST CURB OF SAN PABLO AVENUE, 2.9 FEET NORTHEAST OF THE NORTHEAST EDGE OF THE NORTHWEST ENTRANCE, 0.4 FOOT SOUTHEAST OF THE SOUTHEAST EDGE OF A SIDEWALK, AND ABOUT 0.8 FOOT HIGHER THAN THE SIDEWALK. <p> <h2>STATION RECOVERY (1994) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1994 RECOVERED IN GOOD CONDITION. HT0153 A 178 EBMUD http://www.geocaching.com/mark/details.asp?PID=HT0153 A 178 EBMUD Geocache Geocache A 178 EBMUD EBMUD Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 178 EBMUD</h1> <b> PID </b> HT0153 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> BRIONES VALLEY (1993) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 53 21. (N) 122 11 40. (W) SCALED <br> <b> NAVD 88 </b> 122.28 (+/-2cm) 401.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.16 (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> 655,520. </td><td> 1,850,970. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 121.429 (m) 398.39 (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: 10SEG708938(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: ABUTMENT <br>STAMPING: A 178 1934 <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>1934 </td><td>MONUMENTED </td><td>EBMUD</td></tr><tr><td>1958 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1962 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1958 0.3 MI NW FROM ORINDA VILLAGE. 0.3 MILE NORTHWEST ALONG CAMINO PABLO (ORINDA WAY) FROM THE Y JUNCTION OF CAMINO SOBRANTE AT ORINDA VILLAGE, ABOUT 200 FEET NORTHEAST OF THE Y JUNCTION OF MINER ROAD, AT A CONCRETE BRIDGE OVER SAN PABLO CREEK, IN THE TOP OF THE NORTHWEST END OF THE SOUTHWEST CONCRETE ABUTMENT, 12 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, AND ABOUT 1/2 FOOT LOWER THAN THE ROAD. <p> <h2>STATION RECOVERY (1962) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1962 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP) RECOVERED IN GOOD CONDITION. HT0115 A 179 http://www.geocaching.com/mark/details.asp?PID=HT0115 A 179 Geocache Geocache A 179 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 179</h1> <b> PID </b> HT0115 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> WALNUT CREEK (1995) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 55 28. (N) 122 03 35. (W) SCALED <br> <b> NAVD 88 </b> 33.44 (+/-2cm) 109.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.11 (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> 659,230. </td><td> 1,862,880. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 32.63 (m) 107.1 (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: 10SEG826978(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 179 1934 <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>1934 </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 1934 1.9 MI N FROM WALNUT CREEK. ON MARTINEZ HIGHWAY AT ITS INTERSECTION WITH PLEASANT HILL ROAD, ABOUT 150 FEET SOUTH OF PLEASANT HILL ROAD, 25 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, IN LINE WITH A ROW OF EUCALYPTUS TREES, AT ROAD LEVEL. <p> <h2>STATION RECOVERY (1958) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1958 RECOVERED IN GOOD CONDITION. HS3656 A 192 http://www.geocaching.com/mark/details.asp?PID=HS3656 A 192 Geocache Geocache A 192 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 192</h1> <b> PID </b> HS3656 <br> <b> STATE/COUNTY</b> CA/CONTRA COSTA <br> <b> USGS QUAD </b> CLIFTON COURT FOREBAY (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 37 50 02. (N) 121 36 31. (W) SCALED <br> <b> NAVD 88 </b> 5.82 (+/-2cm) 19.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -32.20 (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> 648,610. </td><td> 1,902,420. </td><td> MT</td><td> (+/- 180 mete