National Geodetic Survey, Retrieval Date = OCTOBER 3, 2009 DW0964 *********************************************************************** DW0964 DESIGNATION - FORT GASS DW0964 PID - DW0964 DW0964 STATE/COUNTY- CA/IMPERIAL DW0964 USGS QUAD - PALO VERDE PEAK (1988) DW0964 DW0964 *CURRENT SURVEY CONTROL DW0964 ___________________________________________________________________ DW0964* NAD 83(1992)- 33 19 46.01170(N) 114 46 37.56371(W) ADJUSTED DW0964* NAVD 88 - 547.9 (meters) 1798. (feet) VERTCON DW0964 ___________________________________________________________________ DW0964 EPOCH DATE - 1991.35 DW0964 LAPLACE CORR- -0.59 (seconds) DEFLEC99 DW0964 GEOID HEIGHT- -33.19 (meters) GEOID03 DW0964 HORZ ORDER - FIRST DW0964 DW0964.The horizontal coordinates were established by classical geodetic methods DW0964.and adjusted by the National Geodetic Survey in June 1996. DW0964.The horizontal coordinates are valid at the epoch date displayed above. DW0964.The epoch date for horizontal control is a decimal equivalence DW0964.of Year/Month/Day. DW0964 DW0964.The NAVD 88 height was computed by applying the VERTCON shift value to DW0964.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DW0964 DW0964.The Laplace correction was computed from DEFLEC99 derived deflections. DW0964 DW0964.The geoid height was determined by GEOID03. DW0964 DW0964; North East Units Scale Factor Converg. DW0964;SPC CA 6 - 629,923.925 2,137,122.462 MT 0.99995415 +0 48 33.8 DW0964;SPC CA 6 - 2,066,675.41 7,011,542.61 sFT 0.99995415 +0 48 33.8 DW0964;SPC AZ W - 258,765.642 117,736.749 MT 1.00004603 -0 33 51.8 DW0964;SPC AZ W - 848,968.64 386,275.42 iFT 1.00004603 -0 33 51.8 DW0964;UTM 11 - 3,690,016.427 706,899.521 MT 1.00012780 +1 13 18.5 DW0964 DW0964! - Elev Factor x Scale Factor = Combined Factor DW0964!SPC CA 6 - 0.99991920 x 0.99995415 = 0.99987335 DW0964!SPC AZ W - 0.99991920 x 1.00004603 = 0.99996522 DW0964!UTM 11 - 0.99991920 x 1.00012780 = 1.00004699 DW0964 DW0964|---------------------------------------------------------------------| DW0964| PID Reference Object Distance Geod. Az | DW0964| dddmmss.s | DW0964| CE9403 FORT GASS RM 2 4.098 METERS 01823 | DW0964| DW0986 AIR BEACON APPROX.30.3 KM 0263934.3 | DW0964| DW0937 CHOCOLATE CAIRN APPROX.27.2 KM 1021658.3 | DW0964| CE9404 FORT GASS RM 3 12.891 METERS 15803 | DW0964| CE9402 FORT GASS RM 1 3.869 METERS 26041 | DW0964| DW0968 MANEUVER CAIRN APPROX.18.6 KM 2911549.1 | DW0964| DW0962 PROMINENT RED CLIFF PROTRUSION APPROX.11.9 KM 3154800.4 | DW0964| DW0656 FORT GASS AZ MK 3545558.7 | DW0964|---------------------------------------------------------------------| DW0964 DW0964 SUPERSEDED SURVEY CONTROL DW0964 DW0964 NAD 83(1992)- 33 19 46.01242(N) 114 46 37.56366(W) AD(1984.00) 1 DW0964 NAD 83(1986)- 33 19 46.01921(N) 114 46 37.57014(W) AD(1984.00) 1 DW0964 NAD 27 - 33 19 45.90361(N) 114 46 34.71266(W) AD( ) 1 DW0964 NGVD 29 (07/19/86) 547.2 (m) 1795. (f) VERT ANG DW0964 DW0964.Superseded values are not recommended for survey control. DW0964.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DW0964.See file dsdata.txt to determine how the superseded data were derived. DW0964 DW0964_U.S. NATIONAL GRID SPATIAL ADDRESS: 11SQS0690090016(NAD 83) DW0964_MARKER: DD = SURVEY DISK DW0964_SETTING: 66 = SET IN ROCK OUTCROP DW0964 DW0964 HISTORY - Date Condition Report By DW0964 HISTORY - 1935 MONUMENTED USGS DW0964 HISTORY - 1948 GOOD CGS DW0964 HISTORY - 1964 GOOD CGS DW0964 DW0964 STATION DESCRIPTION DW0964 DW0964'DESCRIBED BY US GEOLOGICAL SURVEY 1935 (CP) DW0964'THE STATION IS LOCATED ABOUT 8 MILES AIR LINE SSW OF THE SMALL DW0964'TOWN OF PALO VERDE AND 3 MILES W OF THE COLORADO RIVER ON THE DW0964'SUMMIT OF THE HIGHEST AND MOST PROMINENT PEAK IN THAT PART DW0964'OF THE COUNTRY. DW0964' DW0964'STATION MARK IS A U.S.G.S. TRIANGULATION STATION MARK SET IN DW0964'OUTCROPPING ROCK. DW0964' DW0964'REFERENCE MARKS ARE STANDARD BRONZE DISKS WEDGED IN DRILL HOLES DW0964'IN OUTCROPPING BEDROCK. DW0964' DW0964'REACHED FROM PALO VERDE AS FOLLOWS--FROM THE PALO VERDE POST DW0964'OFFICE CONTINUE S AND W ON YUMA ROAD 7.3 MILES TO A LARGE DW0964'CULVERT, CONTINUE PAST CULVERT 0.3 MILE TO THE END OF TRUCK DW0964'TRAVEL. FROM HERE TAKE WASH TO THE LEFT AND CONTINUE UP WASH DW0964'TO THE SUMMIT OF THE MOUNTAIN AND STATION. A 1-HOUR PACK. DW0964 DW0964 STATION RECOVERY (1948) DW0964 DW0964'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1948 (DHK) DW0964'STATION RECOVERED, ALL MARKS FOUND IN GOOD CONDITION AS DESCRIBED DW0964'EXCEPT A SLIGHT DIFFERENCE IN DIRECTION TO REFERENCE MARK NO. 2. DW0964'AN AZIMUTH MARK WAS ESTABLISHED. A COMPLETE DESCRIPTION IS AS DW0964'FOLLOWS-- DW0964' DW0964'THE STATION IS LOCATED ABOUT 8 MILES AIR LINE SOUTH-SOUTHWEST OF DW0964'PALO VERDE, AND ABOUT 3 MILES AIR LINE WEST OF THE COLORADO DW0964'RIVER ON THE HIGHEST POINT OF THE MOST PROMINENT PEAK IN THIS DW0964'VICINITY. THE STATION MARK IS A U.S. GEOLOGICAL SURVEY DW0964'TRIANGULATION BRONZE DISK SET IN BEDROCK, PROJECTS 6 INCHES DW0964'AND STAMPED, FORT GASS. DW0964' DW0964'REFERENCE MARK NO. 1 IS APPROXIMATELY 6 FEET LOWER THAN THE DW0964'STATION MARK, FLUSH WITH THE GROUND, DW0964'AND STAMPED, FORT GASS NO 1 1935. DW0964' DW0964'REFERENCE MARK NO. 2 IS APPROXIMATELY 4 FEET LOWER THAN THE DW0964'STATION MARK, PROJECTS 8 INCHES, DW0964'AND STAMPED, FORT GASS NO 2 1935. DW0964' DW0964'THE AZIMUTH MARK IS SET ALONG THE ROAD TO THE STATION, 40 FEET DW0964'EAST OF THE CENTER LINE OF GRADED ROAD, 1 FOOT WEST OF A WHITE DW0964'WITNESS POSTPROJECTS 18 INCHES AND DW0964'STAMPED, FORT GASS 1948. DW0964' DW0964'TO REACH THE STATION FROM PALO VERDE, GO SOUTH FOR 0.2 MILE TO DW0964'FORK. TAKE RIGHT FORK, WEST, FOR 0.6 MILE TO FORK AND SIGN MIDWAY DW0964'WELL 18 YUMA 67. TURN LEFT, SOUTH AND FOLLOW MAIN TRAVELED ROAD DW0964'FOR 3.1 MILE TO FORK. TAKE RIGHT FORK, MAIN TRAVELED ROAD DW0964'FOR 3.9 MILES TO THE AZIMUTH ON THE LEFT, EAST, AS DESCRIBED DW0964'ABOVE. CONTINUE ON THE MAIN TRAVELED ROAD FOR 1.0 MILE TO THE DW0964'END OF TRUCK TRAVEL. HERE PACK, EAST, UP WASH TO THE HIGHEST DW0964'POINT AND STATION AS DESCRIBED. THE PEAK CAN BE CLIMBED ONLY DW0964'BY FOLLOWING WASH. A 2 HOUR PACK. DW0964 DW0964 STATION RECOVERY (1964) DW0964 DW0964'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (LGB) DW0964'THE STATION MARK, REFERENCE MARK 2 AND THE AZIMUTH MARK WERE DW0964'RECOVERED IN GOOD CONDITION. REFERENCE MARK 1 HAD BEEN DESTROYED. DW0964'REFERENCE MARK 3 WAS SET TO REPLACE REFERENCE MARK 1. THE 1948 DW0964'ROUTE TO THE STATION WAS FOUND TO BE ADEQUATE, HOWEVER, A NEW DW0964'HIGHWAY IS UNDER CONSTRUCTION SOUTH OF PALO VERDE AND THE ROUTE DW0964'MAY CHANGE UPON ITS COMPLETION. DW0964' DW0964'REFERENCE MARK 3 IS A STANDARD DISK, STAMPED FORT GASS NO 3 1935 DW0964'1964, CEMENTED IN A DEPRESSION IN A LARGE BOULDER WHICH IS ABOUT DW0964'10 FEET LOWER THAN THE STATION.