National Geodetic Survey, Retrieval Date = NOVEMBER 18, 2001 DC1905 *********************************************************************** DC1905 DESIGNATION - GROAN USE 1941 DC1905 PID - DC1905 DC1905 STATE/COUNTY- CA/SAN DIEGO DC1905 USGS QUAD - JACUMBA (1975) DC1905 DC1905 *CURRENT SURVEY CONTROL DC1905 ___________________________________________________________________ DC1905* NAD 83(1992)- 32 43 57.07810(N) 116 12 06.36522(W) ADJUSTED DC1905* NAVD 88 - 1397. (meters) 4583. (feet) VERTCON DC1905 ___________________________________________________________________ DC1905 EPOCH DATE - 1991.35 DC1905 LAPLACE CORR- -5.61 (seconds) DEFLEC99 DC1905 GEOID HEIGHT- -32.75 (meters) GEOID99 DC1905 DC1905 HORZ ORDER - THIRD DC1905 DC1905.The horizontal coordinates were established by classical geodetic methods DC1905.and adjusted by the National Geodetic Survey in June 1996. DC1905.The horizontal coordinates are valid at the epoch date displayed above. DC1905.The epoch date for horizontal control is a decimal equivalence DC1905.of Year/Month/Day. DC1905 DC1905.The NAVD 88 height was computed by applying the VERTCON shift value to DC1905.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DC1905 DC1905.The Laplace correction was computed from DEFLEC99 derived deflections. DC1905 DC1905.The geoid height was determined by GEOID99. DC1905 DC1905; North East Units Scale Converg. DC1905;SPC CA 6 - 562,756.164 2,004,521.016 MT 1.00000884 +0 01 35.4 DC1905;SPC CA 6 - 1,846,309.18 6,576,499.37 sFT 1.00000884 +0 01 35.4 DC1905;UTM 11 - 3,621,916.633 574,792.693 MT 0.99966898 +0 25 53.9 DC1905 DC1905: Primary Azimuth Mark Grid Az DC1905:SPC CA 6 - GRUNT USE 1941 314 55 10.2 DC1905:UTM 11 - GRUNT USE 1941 314 30 51.7 DC1905 DC1905|---------------------------------------------------------------------| DC1905| PID Reference Object Distance Geod. Az | DC1905| dddmmss.s | DC1905| DC1873 GRUNT USE 1941 APPROX. 3.2 KM 3145645.6 | DC1905|---------------------------------------------------------------------| DC1905 DC1905 SUPERSEDED SURVEY CONTROL DC1905 DC1905 NAD 83(1986)- 32 43 57.08033(N) 116 12 06.36510(W) AD(1984.00) 3 DC1905 NAD 27 - 32 43 56.87369(N) 116 12 03.29232(W) AD( ) 3 DC1905 NGVD 29 - 1396. (m) 4580. (f) VERT ANG DC1905 DC1905.Superseded values are not recommended for survey control. DC1905.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DC1905.See file dsdata.txt to determine how the superseded data were derived. DC1905 DC1905_MARKER: DD = SURVEY DISK DC1905_SETTING: 0 = UNSPECIFIED SETTING DC1905_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY DC1905 DC1905 HISTORY - Date Condition Report By DC1905 HISTORY - 1941 MONUMENTED USE DC1905 DC1905 STATION DESCRIPTION DC1905 DC1905'DESCRIBED BY US ENGINEERS 1941 DC1905'STATION IS STANDARD DISK IN ROCK STAMPED MOAN (ERRONEOUSLY). DC1905' DC1905'STATION IS LOCATED WEST ACROSS CARRIZO WASH FROM TUNNEL 16 ON SAN DC1905'DIEGO AND ARIZONA RAILROAD ABOUT 6.0 MILES NORTH OF JACUMBA. DC1905' DC1905'TO REACH FROM JACUMBA POST OFFICE GO EAST ON U.S. HIGHWAY 80, DC1905'FOR 14.2 MILES THRU INKOPAH GORGE AND ACROSS CONCRETE BRIDGE TO DC1905'SECOND SET OF GUARD RAILS ON LEFT OF ROAD 0.4 MILES EAST OF BRIDGE, DC1905'TURN LEFT ON DIRT ROAD AND FOLLOW 4.4 MILES PAST MINE AND ACROSS DC1905'RAILROAD TO JUNCTION, TURN LEFT AND GO 2.6 MILES AND CROSS DC1905'RAILROAD, GO 1.6 MILES AND CROSS RAILROAD TRACK, TURN RIGHT AND DC1905'FOLLOW ROAD ALONG RAILROAD FOR 1.3 MILES TO DOS CABEZAS, FOLLOW DC1905'ROAD TO END OF TRUCK TRAVEL. WALK UP RR TO TUNNEL 16, TURN DC1905'RIGHT AT N. END OF TUNNEL ON OLD ROAD BED TO POINT WHERE ROAD DC1905'TURNS BACK TOWARD RR, GO DOWN RIDGE TO CANYON BOTTOM, TURN LEFT DC1905'AND FOLLOW CANYON 1/2 MILE FROM HERE, TO THE RIGHT MAY BE SEEN DC1905'A HIGH HILL WITH PROMINENT BUSH ON EDGE, CLIMB UP HILL DC1905'TO BUSH AND STATION SITE. STATION IS 20 FEET FROM BUSH. DC1905' DC1905'REFERENCE MARK 1 IS A STANDARD DISK IN ROCK, STAMPED R.M. 1. DC1905' DC1905'REFERENCE MARK 2 IS A STANDARD DISK IN ROCK, STAMPED R.M. 2.