JT2018 ***********************************************************************
JT2018  DESIGNATION -  BENICIA RR BR AERO BN
JT2018  PID         -  JT2018
JT2018  STATE/COUNTY-  CA/CONTRA COSTA
JT2018  USGS QUAD   -  VINE HILL (1980)
JT2018
JT2018                         *CURRENT SURVEY CONTROL
JT2018  ___________________________________________________________________
JT2018* NAD 83(1992)-  38 02 17.58933(N)    122 07 13.56407(W)     ADJUSTED
JT2018* NAVD 88     -
JT2018  ___________________________________________________________________
JT2018  EPOCH DATE  -        1991.35
JT2018  LAPLACE CORR-          -0.42  (seconds)                    DEFLEC99
JT2018  GEOID HEIGHT-         -32.00  (meters)                     GEOID99
JT2018
JT2018  HORZ ORDER  -  THIRD
JT2018
JT2018.The horizontal coordinates were established by classical geodetic methods
JT2018.and adjusted by the National Geodetic Survey in March 1994.
JT2018.The horizontal coordinates are valid at the epoch date displayed above.
JT2018.The epoch date for horizontal control is a decimal equivalence
JT2018.of Year/Month/Day.
JT2018
JT2018
JT2018.The Laplace correction was computed from DEFLEC99 derived deflections.
JT2018
JT2018.The geoid height was determined by GEOID99.
JT2018
JT2018;                    North         East     Units   Scale      Converg.
JT2018;SPC CA 3     - 2,204,543.44  6,095,009.30   sFT  0.99994170 -0 59 31.5
JT2018;SPC CA 3     -   671,946.184 1,857,762.551   MT  0.99994170 -0 59 31.5
JT2018;UTM  10      - 4,210,420.609   577,184.146   MT  0.99967337 +0 32 31.2
JT2018
JT2018                          SUPERSEDED SURVEY CONTROL
JT2018
JT2018  NAD 83(1986)-  38 02 17.58524(N)    122 07 13.56554(W) AD(1984.00) 4
JT2018  NAD 27      -  38 02 17.87184(N)    122 07 09.69023(W) AD(       ) 3
JT2018
JT2018.Superseded values are not recommended for survey control.
JT2018.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
JT2018.See file dsdata.txt to determine how the superseded data were derived.
JT2018
JT2018_MAGNETIC: N = NO MAGNETIC MATERIAL
JT2018_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
JT2018+SATELLITE: SATELLITE OBSERVATIONS - March 08, 1988
JT2018
JT2018  HISTORY     - Date     Condition        Recov. By
JT2018  HISTORY     - 1979     FIRST OBSERVED   NOS
JT2018  HISTORY     - 1939     GOOD             CGS
JT2018  HISTORY     - 1941     GOOD             CGS
JT2018  HISTORY     - 1949     GOOD             CGS
JT2018  HISTORY     - 1962     GOOD             CGS
JT2018  HISTORY     - 1967     GOOD             CGS
JT2018  HISTORY     - 1977     GOOD             NGS
JT2018  HISTORY     - 1979     GOOD             NOS
JT2018  HISTORY     - 1982     GOOD             USCG
JT2018  HISTORY     - 19880308 GOOD             NOS
JT2018
JT2018                          STATION DESCRIPTION
JT2018
JT2018''DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (RDH)
JT2018''THERE IS NO DESCRIPTION FOR THIS STATION OTHER THAN IMPLIED
JT2018''BY THE TITLE.
JT2018''
JT2018''STATION IS A REVOLVING AVIATION BEACON ON TOP OF THE SOUTHLIFT
JT2018''TOWER OF THE SOUTHERN PACIFIC RAILROAD BRIDGE AT MARTINEZ.  IT
JT2018''IS ON THE CENTER LINE OF THE BRIDGE.
JT2018
JT2018                          STATION RECOVERY (1941)
JT2018
JT2018''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1941 (WDP)
JT2018''STATION IS LOCATED ON TOP OF THE S TOWER OF THE LIFT SPAN ON
JT2018''THE SOUTHERN PACIFIC COMPANY RAILROAD BRIDGE ACROSS CARCUINEZ
JT2018''STRAIT, BETWEEN ARMY POINT AND BULLS HEAD POINT.  IT IS AN
JT2018''AVIATION BEACON ON TOP OF A SMALL STEEL FRAME STRUCTURE,
JT2018''ON TOP OF THE TOWER, ON LINE WITH THE CENTER LINE OF THE
JT2018''BRIDGE, AND ON THE S SIDE OF THE TOP OF THE TOWER.
JT2018''
JT2018''THIS IS AN INTERSECTION STATION.
JT2018
JT2018                          STATION RECOVERY (1949)
JT2018
JT2018''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1949 (CAG)
JT2018''STATION RECOVERED BY 1949 TOPOGRAPHER.
JT2018''
JT2018''THE STATION IS THE AVIATION BEACON ATOP THE SOUTH TOWER OF THE
JT2018''LIFT-SPAN OF THE SOUTHERN PACIFIC RAILROAD BRIDGE BETWEEN
JT2018''MARTINEZ AND BENICIA.
JT2018
JT2018                          STATION RECOVERY (1962)
JT2018
JT2018''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1962 (IRR)
JT2018''THE STATION WAS RECOVERED IN GOOD CONDITION AND THE PREVIOUS
JT2018''DESCRIPTIONS ARE ADEQUATE.
JT2018
JT2018                          STATION RECOVERY (1967)
JT2018
JT2018''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (JJC)
JT2018''THE STATION WAS RECOVERED AS DESCRIBED.
JT2018''
JT2018''THE BENICIA-MARTINEZ BRIDGE OF INTERSTATE HIGHWAY 680 IS ON THE
JT2018''WEST SIDE OF THE SP RR BRIDGE.  THE NEW AUTO BRIDGE SLIGTHLY LOWER
JT2018''THAN THE RR BRIDGE TOWERS.
JT2018''
JT2018''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
JT2018''1.8 MILES N. OF MARTINEZ.
JT2018
JT2018                          STATION RECOVERY (1977)
JT2018
JT2018''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CA)
JT2018''THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY
JT2018''J.B. JR AND W.D.P. IN 1941.
JT2018''
JT2018''AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN
JT2018''1.5 N.M. NNE FROM MARTINEZ.
JT2018
JT2018                          STATION RECOVERY (1979)
JT2018
JT2018''RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1979 (RBM)
JT2018''THE STATION IS BENICIA RAILROAD BRIDGE AERO BEACON.
JT2018''
JT2018''THE STATION IS LOCATED ABOUT 1 MILE SOUTHEAST OF BENICIA,
JT2018''ABOUT 1/4 MILE NORTHWEST OF BULLS HEAD POINT AND ON
JT2018''THE RAILROAD BRIDGE OVER CARQUINEZ STRAIT.
JT2018''
JT2018''THE STATION IS THE SPINDLE THAT SUPPORTS A RED ROTATING
JT2018''AERO BEACON.  IT IS LOCATED ABOVE THE SOUTH PIER
JT2018''OF THE LIFT SPAN OF THE BRIDGE.
JT2018
JT2018                          STATION RECOVERY (1982)
JT2018
JT2018''RECOVERY NOTE BY US COAST GUARD 1982 (MEF)
JT2018''STATION WAS RECOVERED AS DESCRIBED.
JT2018''DESCRIBED BY M.E. FRIAS
JT2018
JT2018                          STATION RECOVERY (1988)
JT2018
JT2018''RECOVERY NOTE BY NATIONAL OCEAN SERVICE 1988 (FRD)
JT2018''RECOVERED AS DESCRIBED AT THIS DATE.$RECOVERED BY T.K. PORTA