National Geodetic Survey, Retrieval Date = OCTOBER 29, 2000 DX4902 *********************************************************************** DX4902 DESIGNATION - BLUFF DX4902 PID - DX4902 DX4902 STATE/COUNTY- CA/SAN DIEGO DX4902 USGS QUAD - FONTS POINT (1974) DX4902 DX4902 *CURRENT SURVEY CONTROL DX4902 ___________________________________________________________________ DX4902* NAD 83(1992)- 33 15 24.25742(N) 116 13 59.14640(W) ADJUSTED DX4902* NAVD 88 - 395.0 (meters) 1296. (feet) VERTCON DX4902 ___________________________________________________________________ DX4902 EPOCH DATE - 1991.35 DX4902 LAPLACE CORR- -3.16 (seconds) DEFLEC99 DX4902 GEOID HEIGHT- -33.14 (meters) GEOID99 DX4902 DX4902 HORZ ORDER - FIRST DX4902 DX4902.The horizontal coordinates were established by classical geodetic methods DX4902.and adjusted by the National Geodetic Survey in June 1996. DX4902.The horizontal coordinates are valid at the epoch date displayed above. DX4902.The epoch date for horizontal control is a decimal equivalence DX4902.of Year/Month/Day. DX4902 DX4902.The NAVD 88 height was computed by applying the VERTCON shift value to DX4902.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DX4902 DX4902.The Laplace correction was computed from DEFLEC99 derived deflections. DX4902 DX4902.The geoid height was determined by GEOID99. DX4902 DX4902; North East Units Scale Converg. DX4902;SPC CA 6 - 2,037,042.15 6,566,834.15 sFT 0.99995505 +0 00 33.4 DX4902;SPC CA 6 - 620,891.689 2,001,575.051 MT 0.99995505 +0 00 33.4 DX4902;UTM 11 - 3,680,011.728 571,433.605 MT 0.99966291 +0 25 14.1 DX4902 DX4902: Primary Azimuth Mark Grid Az DX4902:SPC CA 6 - SODA 106 20 12.0 DX4902:UTM 11 - SODA 105 55 31.3 DX4902 DX4902|---------------------------------------------------------------------| DX4902| PID Reference Object Distance Geod. Az | DX4902| dddmmss.s | DX4902| BLUFF RM 1 28.466 METERS 01048 | DX4902| DW1460 SODA APPROX.30.6 KM 1062045.4 | DX4902| BLUFF RM 2 12.731 METERS 32926 | DX4902| BLUFF AZ MK 3551716.3 | DX4902| DX4904 BLUFF AZ MK 170.127 METERS 35518 | DX4902|---------------------------------------------------------------------| DX4902 DX4902 SUPERSEDED SURVEY CONTROL DX4902 DX4902 NAD 83(1986)- 33 15 24.26019(N) 116 13 59.14344(W) AD(1984.00) 1 DX4902 NAD 27 - 33 15 24.12100(N) 116 13 56.11800(W) AD( ) 1 DX4902 NGVD 29 - 394.3 (m) 1294. (f) VERT ANG DX4902 DX4902.Superseded values are not recommended for survey control. DX4902.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DX4902.See file dsdata.txt to determine how the superseded data were derived. DX4902 DX4902 HISTORY - Date Condition Recov. By DX4902 HISTORY - 1939 MONUMENTED CGS DX4902 HISTORY - 1955 MONUMENTED CGS DX4902 HISTORY - 1969 MONUMENTED CGS DX4902 HISTORY - 1974 MONUMENTED NGS DX4902 DX4902 STATION DESCRIPTION DX4902 DX4902'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (FGJ) DX4902'ABOUT 25 MILES NORTHEAST OF JULIAN, 10 MILES NORTHWEST OF NEW DX4902'TOWN OF OCOTILLO AND ABOUT 6 MILES SOUTHEAST OF CLARK LAKE, DX4902'ON HIGHEST POINT IN IMMEDIATE VICINITY AND HAS RED BLUFFS ON DX4902'THE SOUTH AND A GENERAL SLOPE TO THE NORTH. DX4902' DX4902'TO REACH STATION FROM NEW TOWN OF OCOTILLO GO WEST ON STATE DX4902'HIGHWAY NO. 78 FOR 10.0 MILES TO A DIRT ROAD LEADING RIGHT AT DX4902'SIGN BOREGO VALLEY 10 MILES, TURN RIGHT AND FOLLOW MAIN TRAVELED DX4902'ROAD FOR 7.4 MILES TO BOREGO VALLEY POST OFFICE. THE MAIN DX4902'TRAVELED ROAD TURNS LEFT AT SIGN BOREGO STATE PARK 7 MILES. KEEP DX4902'STRAIGHT AHEAD ON TRACK ROAD 0.1 MILE TO FORKS. TAKE DX4902'RIGHT MIDDLE TRACK ROAD OF FOUR TRACK ROADS FOR 0.55 MILE DX4902'TO FORK AT SIGN PAINTED DESERT. KEEP RIGHT FORK, STRAIGHT DX4902'AHEAD AND FOLLOW MAIN TRAVELED ROAD 1.95 MILES TO DR. DX4902'BEATYS RANCH HOUSE. PASS BETWEEN HOUSE AND BARN AND GO DX4902'ABOUT 0.05 MILE TO SECOND GATE. GO THROUGH GATE, TAKE DX4902'MIDDLE FORK AND FOLLOW MAIN TRAVELED ROAD 1.05 MILES TO CROSS DX4902'ROAD JUST SOUTH OF A RANCH HOUSE. TURN RIGHT AND GO DX4902'EASTERLY 1.25 MILES TO ANOTHER CROSS ROAD. TURN LEFT AND GO DX4902'NORTH 1.55 MILES TO AN EAST-WEST ROAD AT SIGN HOBOYAK ROAD. DX4902'TURN RIGHT AND FOLLOW MAIN TRAVELED ROAD 0.75 MILE TO FORK. DX4902'KEEP RIGHT FORK 2.75 MILES TO A WIDE WASH. TURN RIGHT ON WIDE DX4902'WASH AT SIGN BOREGO AND PAINTED DESERT FOR 2.3 MILES. TURN DX4902'RIGHT TO SIDE WASH FOR 1.9 MILES TO END OF TRUCK TRAVEL DX4902'AND STATION. MARK PROJECTS ABOUT 4 INCHES ABOVE THE GROUND, DX4902'AND IS STAMPED BLUFF 1939. DX4902' DX4902'SURFACE, UNDERGROUND, REFERENCE AND AZIMUTH MARKS ARE STANDARD DX4902'BRONZE DISKS IN CONCRETE, NOTES 1A, 7A AND 11A. DX4902' DX4902'REFERENCE MARKS PROJECT ABOUT 4 INCHES ABOVE THE GROUND, AND DX4902'ARE STAMPED BLUFF NO. 1, 1939 AND BLUFF NO. 2, 1939. DX4902' DX4902'AZIMUTH MARK IS ABOUT 0.15 MILE NORTH OF STATION ON NORTH SIDE DX4902'OF ROAD LEADING TO STATION, AND IS STAMPED BLUFF 1939. DX4902 DX4902 STATION RECOVERY (1955) DX4902 DX4902'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1955 (LSB) DX4902'THE STATION, REFERENCE MARKS 1 AND 2, AND AZIMUTH MARK WERE DX4902'RECOVERED AND IN GOOD CONDITION. THE DIRECTIONS AND DISTANCES DX4902'CHECKED THE 1939 DATA. DX4902' DX4902'THE STATION IS LOCATED ON A PROMINENT POINT (LOCALLY KNOWN AS DX4902'FONTS POINT) WITH RED BLUFFS TO THE S AND A GENTLE SLOPE TO DX4902'THE N. IT IS ABOUT 25 MI. (AIRLINE) NE OF JULIAN, ABOUT 10 DX4902'MI. (AIRLINE) NW OF OCOTILLO WELLS, AND ABOUT 6 MI. (AIRLINE) NE DX4902'OF BORREGO SPRINGS. THE 1939 ROUTE TO THE STATION IS OBSOLETE. DX4902'A COMPLETE DESCRIPTION OF THE ROUTE TO THE STATION FOLLOWS-- DX4902' DX4902'TO REACH FROM THE POST OFFICE IN BORREGO SPRINGS, GO E ON PALM DX4902'CANYON DRIVE (THIS IS ABOUT HALFWAY AROUND A ONE-WAY DRIVE DX4902'CIRCLE), A BLACK-TOP ROAD, FOR 3 MI. TO THE AIRPORT ON THE LEFT (N) DX4902'SIDE OF THE ROAD, CONTINUE E FOR 1.5 MI., THENCE LEFT (N) ON DX4902'THE BLACK-TOP ROAD FOR 2.5 MI. TO THE END OF THE BLACK-TOP ROAD. DX4902'TURN RIGHT (E) ON A TRACK ROAD AND GO 0.5 MI. TO A ROAD FORK, DX4902'TAKE THE RIGHT FORK AND FOLLOW THE MAIN-TRAVELED ROAD FOR 3 MI. DX4902'TO THE SECOND LARGE WASH AND A FONTS POINT 4-WHEEL DRIVE DX4902'VEHICLE ONLY SIGN. TURN RIGHT (S) UP THE WASH AND FOLLOW THE DX4902'TRACK ROAD FOR 4.3 MI. TO THE AZIMUTH MARK ON THE RIGHT (W) DX4902'SIDE OF THE TRACK ROAD. CONTINUE S-SW AND S ON THE TRACK DX4902'ROAD FOR 0.15 MI. TO THE END OF TRUCK TRAVEL AND THE DX4902'STATION. DX4902 DX4902 STATION RECOVERY (1969) DX4902 DX4902'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (BKM) DX4902'THE STATION MARK WAS RECOVERED IN POOR CONDITION, A NEW DX4902'STATION MARK WAS SET BY HOLDING THE UNDERGROUND POINT. REFERENCE DX4902'MARK 1 AND 2 AND THE AZIMUTH MARK WERE RECOVERED IN GOOD DX4902'CONDITION. THE DISTANCE TO REFERENCE MARK 2 COMPARED FAVORABLY, DX4902'A DIFFERENCE IN THE MEASUREMENT TO REFERENCE MARK 1 WAS NOTED DX4902'AND VERIFIED IN THE FIELD. THE DIRECTION TO ALL MARKS DID NOT DX4902'COMPARE TO THE 1939 OBSERVATIONS. DX4902' DX4902'THE STATION IS LOCATED ON A PROMINENT POINT (KNOWN AS FONTS DX4902'POINT) WITH RED BLUFFS TO THE SOUTH AND A GENTLE SLOPE TO THE DX4902'NORTH. IT IS ABOUT 25 MILES NORTHEAST OF JULIAN, ABOUT 10 DX4902'MILES NORTH-NORTHWEST OF OCOTILLO WELLS AND ABOUT 6 MILES DX4902'EAST-NORTHEAST OF BORREGO SPRINGS. DX4902' DX4902'A COMPLETE AND NEW DESCRIPTION FOLLOWS. DX4902' DX4902'TO REACH FROM THE POST OFFICE IN BORREGO SPRINGS, GO EAST ON DX4902'PALM CANYON DRIVE FOR 3 MILES TO THE AIRPORT ON THE LEFT. DX4902'CONTINUE EAST FOR 1.6 MILES TO A Y-FORK. TAKE LEFT FORK AND DX4902'GO NORTH FOR 2.6 MILES TO A SIDE ROAD RIGHT (BORREGO SALTON DX4902'SEAWAY). TURN RIGHT AND GO EAST FOR 3.7 MILES TO A DIP IN THE DX4902'ROAD AND A SIGN ON THE RIGHT (FONTS POINT). TURN RIGHT AND GO DX4902'SOUTHEAST UP A DRY WASH ON A SAND ROAD FOR 3.7 MILES TO A DX4902'Y-FORK. TAKE LEFT FORK AND GO SOUTHERLY UP HILL FOR 0.25 MILE DX4902'TO THE AZIMUTH MARK ON THE RIGHT. CONTINUE SOUTHERLY FOR DX4902'0.15 MILE TO THE EDGE OF BLUFF AND THE STATION MARK AT THE DX4902'MOST SOUTHEASTERLY POINT. DX4902' DX4902'THE STATION MARK IS A STANDARD DISK STAMPED BLUFF 1939 1969, DX4902'SET IN THE TOP OF A 12-INCH CYLINDRICAL CONCRETE MONUMENT DX4902'WHICH PROJECTS 1-INCH. IT IS 122 FEET SOUTHEAST OF A WOOD DX4902'SIGN (FONTS POINT ANZA-BORREGO STATE PARK) AND 5.3 FEET SOUTH DX4902'OF A METAL WITNESS POST WITH SIGN ATTACHED. DX4902' DX4902'REFERENCE MARK 1 IS A STANDARD DISK STAMPED BLUFF NO 1 1939, DX4902'SET IN THE TOP OF AN 8-INCH CONCRETE MONUMENT WHICH PROJECTS DX4902'5 INCHES. IT IS 88 FEET NORTH OF THE METAL WITNESS POST, 73 DX4902'FEET EAST OF THE WOOD SIGN AND 9.3 FEET NORTHWEST OF A METAL DX4902'WITNESS POST WITH SIGN ATTACHED. DX4902' DX4902'REFERENCE MARK 2 IS A STANDARD DISK STAMPED BLUFF NO 2 1939, DX4902'SET IN THE TOP OF AN 8-INCH CONCRETE MONUMENT WHICH PROJECTS DX4902'1.1 FEET. IT IS 80 FEET SOUTHEAST OF THE WOOD SIGN AND 38.5 DX4902'FEET NORTHWEST OF THE METAL WITNESS POST. DX4902' DX4902'THE AZIMUTH MARK IS A STANDARD DISK STAMPED BLUFF 1939, SET DX4902'IN THE TOP OF AN 8-INCH CONCRETE MONUMENT WHICH PROJECTS 8 DX4902'INCHES. IT IS 23 FEET WEST OF THE CENTER OF A TRACK ROAD AND DX4902'2.5 FEET SOUTHEAST OF A METAL WITNESS POST WITH SIGN ATTACHED. DX4902' DX4902'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--6 MILES DX4902'EAST-NORTHEAST OF BORREGO SPRINGS DX4902 DX4902 STATION RECOVERY (1974) DX4902 DX4902'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN) DX4902'THE STATION MARK, AZIMUTH MARK AND REFERENCE MARKS 1 AND 2 DX4902'WERE RECOVERED AS DESCRIBED IN 1969. THE 1969 ROUTE TO THE DX4902'STATION WAS USED IN RECOVERY AND FOUND TO BE VERY ADEQUATE. DX4902' DX4902'THE STATION WAS OBSERVED UPON, BUT NOT OCCUPIED THIS YEAR.