1 National Geodetic Survey, Retrieval Date = MAY 1, 2003 JT2158 *********************************************************************** JT2158 DESIGNATION - NADEEN JT2158 PID - JT2158 JT2158 STATE/COUNTY- CA/CONTRA COSTA JT2158 USGS QUAD - BENICIA (1980) JT2158 JT2158 *CURRENT SURVEY CONTROL JT2158 ___________________________________________________________________ JT2158* NAD 83(1992)- 38 01 44.07669(N) 122 11 51.22422(W) ADJUSTED JT2158* NAVD 88 - 274. (meters) 899. (feet) SCALED JT2158 ___________________________________________________________________ JT2158 EPOCH DATE - 1991.35 JT2158 LAPLACE CORR- 1.56 (seconds) DEFLEC99 JT2158 GEOID HEIGHT- -32.01 (meters) GEOID99 JT2158 JT2158 HORZ ORDER - SECOND JT2158 JT2158.The horizontal coordinates were established by classical geodetic methods JT2158.and adjusted by the National Geodetic Survey in March 1994. JT2158.The horizontal coordinates are valid at the epoch date displayed above. JT2158.The epoch date for horizontal control is a decimal equivalence JT2158.of Year/Month/Day. JT2158 JT2158.The orthometric height was scaled from a topographic map. JT2158 JT2158.The Laplace correction was computed from DEFLEC99 derived deflections. JT2158 JT2158.The geoid height was determined by GEOID99. JT2158 JT2158; North East Units Scale Converg. JT2158;SPC CA 3 - 671,033.150 1,850,974.460 MT 0.99994090 -1 02 21.5 JT2158;SPC CA 3 - 2,201,547.93 6,072,738.71 sFT 0.99994090 -1 02 21.5 JT2158;SPC CA 2 - 540,231.480 1,982,653.008 MT 1.00008292 -0 07 28.4 JT2158;SPC CA 2 - 1,772,409.45 6,504,754.08 sFT 1.00008292 -0 07 28.4 JT2158;UTM 10 - 4,209,326.498 570,424.781 MT 0.99966108 +0 29 39.7 JT2158 JT2158: Primary Azimuth Mark Grid Az JT2158:SPC CA 3 - CROCKETT 299 52 23.1 JT2158:SPC CA 2 - CROCKETT 298 57 30.0 JT2158:UTM 10 - CROCKETT 298 20 21.9 JT2158 JT2158|---------------------------------------------------------------------| JT2158| PID Reference Object Distance Geod. Az | JT2158| dddmmss.s | JT2158| AH4894 NADEEN RM 2 00928 | JT2158| AH4997 NADEEN RM 1 28335 | JT2158| JT2182 CROCKETT APPROX. 3.2 KM 2985001.6 | JT2158|---------------------------------------------------------------------| JT2158 JT2158 SUPERSEDED SURVEY CONTROL JT2158 JT2158 NAD 83(1986)- 38 01 44.07163(N) 122 11 51.22457(W) AD(1984.00) 2 JT2158 NAD 27 - 38 01 44.35600(N) 122 11 47.34200(W) AD( ) 2 JT2158 JT2158.Superseded values are not recommended for survey control. JT2158.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. JT2158.See file dsdata.txt to determine how the superseded data were derived. JT2158 JT2158_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEH7042509326(NAD 83) JT2158_MARKER: DS = TRIANGULATION STATION DISK JT2158_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT JT2158_STAMPING: NADEEN 1955 JT2158_MARK LOGO: CGS JT2158_PROJECTION: FLUSH JT2158_MAGNETIC: N = NO MAGNETIC MATERIAL JT2158_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO JT2158+STABILITY: SURFACE MOTION JT2158_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR JT2158+SATELLITE: SATELLITE OBSERVATIONS - March 03, 1988 JT2158 JT2158 HISTORY - Date Condition Report By JT2158 HISTORY - 1955 MONUMENTED CGS JT2158 HISTORY - 1969 SEE DESCRIPTION CGS JT2158 HISTORY - 19850620 GOOD NGS JT2158 HISTORY - 19880303 GOOD NOS JT2158 HISTORY - 20030410 MARK NOT FOUND CA-013 JT2158 JT2158 STATION DESCRIPTION JT2158 JT2158'DESCRIBED BY COAST AND GEODETIC SURVEY 1955 (WMG) JT2158'THE STATION IS ON THE HIGHEST POINT OF THE RIDGE SOUTH OF JT2158'CARQUINEZ STRAIGHT BETWEEN MARTINEZ AND CROCKETT. JT2158' JT2158'BEST REACHED FROM CROCKETT AS FOLLOWS--FROM THE SOUTH END OF JT2158'THE CARQUINEZ BRIDGE TAKE THE MAIN STREET THROUGH CROCKETT JT2158'FOR 0.5 MILE, TURN RIGHT (JUST AFTER PASSING SCHOOL BUILDINGS) JT2158'AND GO 0.3 MILE, PASS THROUGH GATE AND GO 0.05 MILE, TAKE JT2158'RIGHT FORK AND GO 0.05 MILE, PASS THROUGH GATE AND GO UP HILL JT2158'FOR 0.45 MILE, TAKE LEFT FORK AND GO 0.5 MILE, TAKE RIGHT JT2158'FORK AND GO 0.35 MILE, TAKE RIGHT FORK AND GO 0.1 MILE, TAKE JT2158'LEFT FORK AND GO 0.4 MILE, PASS THROUGH GATE AND CONTINUE JT2158'0.3 MILE, TAKE RIGHT FORK AND GO 0.1 MILE TO AN OLD SHACK ON JT2158'THE LEFT SIDE OF THE ROAD, TURN LEFT CROSS COUNTRY FOR 0.15 JT2158'MILE TO THE HIGHEST POINT OF THE RIDGE AND THE STATION. JT2158' JT2158'THE STATION MARK IS A STANDARD BRONZE STATION MARK TABLET JT2158'SET IN A 14 X 14 INCH CONCRETE POST, PROJECTING ABOUT 4 INCHES. JT2158'STAMPED NADEEN 1955. JT2158' JT2158'R.M. NO. 1 IS A STANDARD BRONZE REFERENCE MARK TABLET SET IN JT2158'A 14 X 14 INCH CONCRETE POST, PROJECTING ABOUT 4 INCHES. JT2158'STAMPED NADEEN NO 1 1955. JT2158' JT2158'R.M. NO. 2 IS A STANDARD BRONZE REFERENCE MARK TABLET SET IN JT2158'A 14 X 14 INCH CONCRETE POST, PROJECTING ABOUT 4 INCHES. JT2158'STAMPED NADEEN NO 2 1955. JT2158 JT2158 STATION RECOVERY (1969) JT2158 JT2158'RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (WFF) JT2158'THE STATION MARK AND REFERENCE MARKS WERE RECOVERED AND FOUND IN JT2158'GOOD CONDITION. A NEW DESCRIPTION TO REACH THE STATION FOLLOWS. JT2158' JT2158'TO REACH THE STATION FROM INTERSTATE 80 AND THE CUMMINGS SKYWAY JT2158'(WHICH IS 1.7 MILES WEST OF CROCKETT), GO SOUTHEAST ON CUMMINGS JT2158'SKYWAY FOR 2.5 MILES TO GATE NUMBER 14 (OBTAIN KEY FROM THE JT2158'CROCKETT FIRE DEPARTMENT), PASS THROUGH THE GATE AND GO NORTHEAST JT2158'FOR 0.1 MILE TO CROSS ROAD AND SIGN GAS LINE, TURN RIGHT AND GO JT2158'SOUTHEAST FOR 0.2 MILE TO A RED BARN ON THE LEFT, TURN LEFT AND JT2158'GO NORTH FOR 0.15 MILE TO THE STATION. NOTE--THE STATION IS JT2158'NOT ON THE HIGHEST POINT OF KNOLL AND THE MARKS ARE FLUSH WITH JT2158'THE GROUND MAKING IT HARD TO LOCATED. JT2158' JT2158'AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN JT2158'3.5 MILES NORTHEAST OF MARTINEZ, 3.0 MILES SOUTHEAST OF CROCKETT, JT2158'0.7 NORTH OF STATE HIGHWAY 4 AND 0.4 MILE EAST OF CUMMINGS SKYWAY. JT2158 JT2158 STATION RECOVERY (1985) JT2158 JT2158'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985 (WRO) JT2158'THE STATION MARK, REFERENCE MARKS 1 AND 2 WERE RECOVERED IN GOOD JT2158'CONDITION. ON GOING CONSTRUCTION WILL DESTROY RM 1 AND LIMIT JT2158'VISIBILITY FROM THE STATION. REFERENCE MARKS 3 AND 4 WERE SET AND JT2158'POSITIONED AT THIS TIME. THE PREVIOUS DATA DOES NOT MENTION AN JT2158'UNDERGROUND MARK. THE STATION IS LOCATED ON THE HIGHEST PART OF THE JT2158'RIDGE, SOUTH OF THE CARQUINEZ STRAIGHT BETWEEN MARTINEZ AND CROCKETT. JT2158'TO REACH THE STATION FROM THE CUMMINGS SKYWAY OVERPASS OVER INTERSTATE JT2158'HIGHWAY 80, WHICH IS ABOUT 1.6 KM (1.00 MI) WEST OF CROCKETT, GO JT2158'SOUTHEAST ON CUMMINGS SKYWAY FOR 4.0 KM (2.50 MI) TO GATE NUMBER 14 ON JT2158'THE LEFT. PASS THRU THE GATE FOR 0.4 KM (0.25 MI) TO A SHARP LEFT JT2158'TURN IN THE ROAD. TURN LEFT FOR 0.2 KM (0.10 MI) TO A MAST, SOME JT2158'BUILDINGS AND THE STATION. THE STATION IS A STANDARD CGS DISK JT2158'STAMPED--NADEEN 1955--, SET INTO THE TOP OF A SQUARE CONCRETE JT2158'MONUMENT, 25 CM IN DIAMETER, FLUSH WITH GROUND. LOCATED 3.6 METERS JT2158'(11.8 FT) WEST FROM AN INSIDE FENCE CORNER, 1.6 METER (5.2 FT) EAST JT2158'FROM AN OUTSIDE FENCE CORNER AND 0.76 METER (2.49 FT) SOUTH FROM A JT2158'FENCE, 10 METERS (32.8 FT) NORTH FROM THE SOUTHWEST FENCE CORNER. JT2158'REFERENCE MARK NO 2 IS A STANDARD CGS DISK STAMPED---NADEEN 1955 NO JT2158'2--, SET INTO THE TOP OF A SQUARE CONCRETE MONUMENT, 25 CM IN DIAMETER JT2158'AND FLUSH WITH THE GROUND. 10 METERS (32.8 FT) NORTH FROM A FENCE JT2158'CORNER, 1.68 METER (5.51 FT) SOUTH FROM A FENCE CORNER AND 0.5 METER JT2158'(1.6 FT) WEST FROM A CHAINLINK FENCE. REFERENCE MARK NO 3 IS A JT2158'STANDARD NGS DISK STAMPED--NADEEN NO 3 1955 1985--, SET INTO THE TOP JT2158'OF A ROUND CONCRETE MONUMENT, 30 CM IN DIAMETER, PROJECTING 15 CM JT2158'ABOVE THE GROUND. LOCATED 37.7 METERS (123.7 FT) WEST-SOUTHWEST FROM JT2158'THE NORTHWEST FENCE CORNER. 37.7 METERS (123.7 FT) WEST-NORTHWEST JT2158'FROM THE SOUTHWEST FENCE CORNER, 22.7 METERS (74.5 FT) NORTHWEST FROM JT2158'THE BOTTOM END OF THE SOUTHWEST SET OF SIX MAST GUY CABLES. REFERENCE JT2158'MARK NO 4 IS A STANDARD NGS DISK STAMPED--NADEEN 1955 NO 4 1985--, SET JT2158'INTO THE TOP OF A ROUND CONCRETE MONUMENT, 30 CM IN DIAMETER AND JT2158'PROJECTING 15 CM ABOVE THE GROUND. LOCATED 46.0 METERS (150.9 FT) JT2158'NORTHWEST FROM THE SOUTHWEST CORNER OF THE FENCE, 35.6 METERS (116.8 JT2158'FT) WEST FROM THE NORTHWEST CORNER, 34 METERS (111.5 FT) JT2158'NORTH-NORTHWEST FROM THE BOTTOM END OF THE SOUTHWEST SET OF SIX MAST JT2158'GUY WIRES AND 2 METERS (6.6 FT) EAST FROM A WITNESS POST. JT2158 JT2158 STATION RECOVERY (1988) JT2158 JT2158'RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1988 (FRD) JT2158'RECOVERED IN GOOD CONDITION. JT2158 JT2158 STATION RECOVERY (2003) JT2158 JT2158'RECOVERY NOTE BY CONTRA COSTA COUNTY CALIFORNIA 2003 (JAS) JT2158'RM'S 1,3 AND 4 WERE RECOVERED IN GOOD CONDITION. NO SURFACE EVIDENCE JT2158'OF STATION MARK WAS FOUND. THERE ARE REMAINS OF CONCRETE FOOTINGS IN JT2158'IMMEDIATE VICINITY. A SMALL BUILDING WITH RADIO TOWER BLOCKS THE VIEW JT2158'TO THE NORTH AND EAST.