DC0901 ***********************************************************************
DC0901  DESIGNATION -  U 734
DC0901  PID         -  DC0901
DC0901  STATE/COUNTY-  CA/SAN DIEGO
DC0901  USGS QUAD   -  POINT LOMA (1994)
DC0901
DC0901                         *CURRENT SURVEY CONTROL
DC0901  ___________________________________________________________________
DC0901* NAD 83(1986)-  32 43 29.     (N)    117 10 14.     (W)     SCALED
DC0901* NAVD 88     -         7.992  (meters)      26.22   (feet)  READJUSTED
DC0901  ___________________________________________________________________
DC0901  GEOID HEIGHT-         -34.99  (meters)                     GEOID99
DC0901  DYNAMIC HT  -           7.980 (meters)      26.18  (feet)  COMP
DC0901  MODELED GRAV-     979,513.9   (mgal)                       NAVD 88
DC0901
DC0901  VERT ORDER  -  * READJUSTED, Code A , SEE BELOW
DC0901
DC0901.The horizontal coordinates were scaled from a topographic map and have
DC0901.an estimated accuracy of +/- 6 seconds.
DC0901
DC0901.The orthometric height was determined by differential leveling
DC0901.and adjusted by the National Geodetic Survey in May 2000.
DC0901.* This is a READJUSTED BENCH MARK height.  Code A indicates a
DC0901.distribution rate of 0.0 thru 1.0 mm/km.
DC0901.The height was derived from older observations constrained to new
DC0901.heights in a crustal motion area.  The height is approximate in
DC0901.relation to other heights in its vicinity.
DC0901
DC0901.The geoid height was determined by GEOID99.
DC0901
DC0901.The dynamic height is computed by dividing the NAVD 88
DC0901.geopotential number by the normal gravity value computed on the
DC0901.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
DC0901.degrees latitude (G = 980.6199 gals.).
DC0901
DC0901.The modeled gravity was interpolated from observed gravity values.
DC0901
DC0901;                    North         East    Units  Estimated Accuracy
DC0901;SPC CA 6     -   562,270.    1,913,710.      MT  (+/- 180 meters Scaled)
DC0901
DC0901                          SUPERSEDED SURVEY CONTROL
DC0901
DC0901  NGVD 29     -         7.329  (m)           24.05   (f) ADJUSTED    1 1
DC0901
DC0901.Superseded values are not recommended for survey control.
DC0901.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DC0901.See file dsdata.txt to determine how the superseded data were derived.
DC0901
DC0901_MARKER: DB = BENCH MARK DISK
DC0901_SETTING: 30 = SIGNAL BASE
DC0901_STAMPING: U 734 1944
DC0901_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
DC0901
DC0901  HISTORY     - Date     Condition        Recov. By
DC0901  HISTORY     - 1944     MONUMENTED       CGS
DC0901  HISTORY     - 1955     GOOD             NGS
DC0901  HISTORY     - 1970     GOOD             CA3260
DC0901  HISTORY     - 1978     MARK NOT FOUND   NGS
DC0901  HISTORY     - 1987     MARK NOT FOUND   NGS
DC0901
DC0901                          STATION DESCRIPTION
DC0901
DC0901''DESCRIBED BY NATIONAL GEODETIC SURVEY 1955
DC0901''AT SAN DIEGO.
DC0901''AT SAN DIEGO, 0.7 MILE NORTH ALONG THE ATCHISON TOPEKA AND SANTA
DC0901''FE RAILWAY FROM THE UNION STATION, AT THE GRAPE STREET CROSSING,
DC0901''IN THE TOP OF THE NORTH CORNER OF THE CONCRETE BASE FOR AUTOMATIC
DC0901''SIGNAL 10710B, 47.9 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE
DC0901''SOUTHWEST TRACK, 1.7 FEET SOUTHEAST OF THE SOUTHEAST CONCRETE
DC0901''CURB OF THE STREET, AND ABOUT LEVEL WITH THE TRACK.
DC0901
DC0901                          STATION RECOVERY (1970)
DC0901
DC0901''RECOVERY NOTE BY CITY OF SAN DIEGO CALIFORNIA 1970
DC0901''RECOVERED IN GOOD CONDITION.
DC0901
DC0901                          STATION RECOVERY (1978)
DC0901
DC0901''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
DC0901''CONCRETE BASE FOR SIGNAL DESTROYED.
DC0901
DC0901                          STATION RECOVERY (1987)
DC0901
DC0901''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987
DC0901''NOT RECOVERED.