National Geodetic Survey, Retrieval Date = FEBRUARY 6, 2002 DX4920 *********************************************************************** DX4920 DESIGNATION - YAK DX4920 PID - DX4920 DX4920 STATE/COUNTY- CA/SAN DIEGO DX4920 USGS QUAD - WHALE PEAK (1978) DX4920 DX4920 *CURRENT SURVEY CONTROL DX4920 ___________________________________________________________________ DX4920* NAD 83(1992)- 33 06 08.55875(N) 116 16 38.96214(W) ADJUSTED DX4920* NAVD 88 - 1115.0 (meters) 3658. (feet) VERTCON DX4920 ___________________________________________________________________ DX4920 EPOCH DATE - 1991.35 DX4920 LAPLACE CORR- -3.94 (seconds) DEFLEC99 DX4920 GEOID HEIGHT- -32.74 (meters) GEOID99 DX4920 DX4920 HORZ ORDER - FIRST DX4920 DX4920.The horizontal coordinates were established by classical geodetic methods DX4920.and adjusted by the National Geodetic Survey in June 1996. DX4920.The horizontal coordinates are valid at the epoch date displayed above. DX4920.The epoch date for horizontal control is a decimal equivalence DX4920.of Year/Month/Day. DX4920 DX4920.The NAVD 88 height was computed by applying the VERTCON shift value to DX4920.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DX4920 DX4920.The Laplace correction was computed from DEFLEC99 derived deflections. DX4920 DX4920.The geoid height was determined by GEOID99. DX4920 DX4920; North East Units Scale Converg. DX4920;SPC CA 6 - 603,772.830 1,997,434.087 MT 0.99996226 -0 00 54.4 DX4920;SPC CA 6 - 1,980,878.03 6,553,248.33 sFT 0.99996226 -0 00 54.4 DX4920;UTM 11 - 3,662,868.762 567,416.592 MT 0.99965604 +0 23 40.6 DX4920 DX4920: Primary Azimuth Mark Grid Az DX4920:SPC CA 6 - WHALE 204 03 49.7 DX4920:UTM 11 - WHALE 203 39 14.7 DX4920 DX4920|---------------------------------------------------------------------| DX4920| PID Reference Object Distance Geod. Az | DX4920| dddmmss.s | DX4920| YAK RM 1 4.951 METERS 06508 | DX4920| DX4921 WHALE APPROX. 8.9 KM 2040255.3 | DX4920| YAK RM 2 5.474 METERS 32125 | DX4920|---------------------------------------------------------------------| DX4920 DX4920 SUPERSEDED SURVEY CONTROL DX4920 DX4920 NAD 83(1986)- 33 06 08.56199(N) 116 16 38.96007(W) AD(1984.00) 1 DX4920 NAD 27 - 33 06 08.39770(N) 116 16 35.92656(W) AD( ) 1 DX4920 NGVD 29 - 1114.3 (m) 3656. (f) VERT ANG DX4920 DX4920.Superseded values are not recommended for survey control. DX4920.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DX4920.See file dsdata.txt to determine how the superseded data were derived. DX4920 DX4920_MARKER: DO = NOT SPECIFIED OR SEE DESCRIPTION DX4920_SETTING: 80 = SET IN A BOULDER DX4920 DX4920 HISTORY - Date Condition Report By DX4920 HISTORY - 1939 MONUMENTED CGS DX4920 HISTORY - 1955 SEE DESCRIPTION CGS DX4920 DX4920 STATION DESCRIPTION DX4920 DX4920'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (FGJ) DX4920'ON THE HIGHEST POINT OF A PROMINENT RIDGE ABOUT 3 MILES DX4920'SOUTH OF CALIFORNIA STATE HIGHWAY NO. 78 AND ABOUT 10 MILES DX4920'WEST-SOUTHWEST OF THE DRY LAKE AND OCOTILLO STORE. DX4920' DX4920'STATION REACHED FROM NEW TOWN OF OCOTILLO ON STATE HIGHWAY DX4920'NO. 78 BY GOING WEST ON HIGHWAY 78 FOR 10.0 MILES TO HIGHWAY DX4920'SIGN BORREGO VALLEY - BORREGO PARK AND JULIAN 24, ETC. CONTINUE DX4920'ON HIGHWAY 78 FOR 1.1 MILES TO THE MOUTH OF A LARGE WASH ON DX4920'LEFT. TURN LEFT AND FOLLOW WASH FOR ABOUT 3.5 MILES TO BASE DX4920'OF HIGH PEAK AND STATION ON LEFT. PACK UP MOUNTAIN WASH IN DX4920'A SOUTHEASTERN DIRECTION TO HIGHEST POINT AND STATION. 2-1/2 DX4920'HOUR HARD PACK ACROSS LARGE ROUGH BOULDERS. DX4920' DX4920'STATION IS MARKED BY A STANDARD DISK SET IN A LARGE BOULDER, DX4920'NOTE 4, STAMPED YAK 1939. DX4920' DX4920'REFERENCE MARKS ARE STANDARD MARKS SET IN BOULDERS, NOTE 12C, DX4920'STAMPED YAK NO. 1, 1939 AND YAK NO. 2, 1939. DX4920 DX4920 STATION RECOVERY (1955) DX4920 DX4920'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (LSB) DX4920'THE STATION MARK AND REFERENCE MARKS 1 AND 2 WERE RECOVERED DX4920'AS DESCRIBED AND IN GOOD CONDITION. THE PREVIOUS DESCRIPTION DX4920'OF THE ROUTE TO THE STATION IS OBSOLETE. A COMPLETE DESCRIPTION DX4920'OF THE ROUTE TO THE STATION FOLLOWS-- DX4920' DX4920'REACHED FROM THE JUNCTION OF U.S. HIGHWAY 99 AND STATE HIGHWAY DX4920'78 (16 MI. NW OF WESTMORLAND). DRIVE W ON STATE HIGHWAY 78 FOR DX4920'16.2 MI. TO OCOTILLO WELLS. CONTINUE W ON STATE HIGHWAY 78 DX4920'FOR 9.6 MI. TO HIGH-VOLTAGE TRANSFORMERS ON THE LEFT (S) DX4920'SIDE OF THE HIGHWAY. CONTINUE W ON STATE HIGHWAY 78 FOR DX4920'1.4 MI. CROSSING BRIDGE NO. F-11-02 TO A TRACK ROAD ON THE LEFT DX4920'(S-SW) LEADING INTO A WASH. TURN LEFT ON THE TRACK ROAD AND DX4920'FOLLOW THE WASH (S-SW) FOR 1.4 MI. TO THE SW BASE OF THE DX4920'MOUNTAIN ON THE LEFT. BEAR LEFT (SE AND E) AND CONTINUE UP DX4920'THE WASH FOR 1.05 MI. TO A FORK. TURN LEFT (E) AND GO 0.1 DX4920'MI. TO A FORK. TURN LEFT (NE) AND DRIVE TOWARD THE MOUTH DX4920'OF THE CANYON FOR 0.5 MI. TO THE END OF TRUCK TRAVEL. DX4920'START PACKING N UP THE WASH TO ITS HEAD IN THE LOW DX4920'SADDLE, THENCE RIGHT ALONG THE RIDGE TO THE HIGHEST POINT DX4920'AND THE STATION. A 3-HOUR PACK. VERY ROUGH GOING. A DX4920'FOUR-WHEEL DRIVE VEHICLE IS REQUIRED FOR THE LAST 3.05 MI.