DC2129 ***********************************************************************
DC2129  CBN         -  This is a Cooperative Base Network Control Station.
DC2129  DESIGNATION -  SAN DIEGO GPS 17
DC2129  PID         -  DC2129
DC2129  STATE/COUNTY-  CA/SAN DIEGO
DC2129  USGS QUAD   -  LA JOLLA (1975)
DC2129
DC2129                         *CURRENT SURVEY CONTROL
DC2129  ___________________________________________________________________
DC2129* NAD 83(1998)-  32 49 06.33421(N)    117 08 52.18823(W)     ADJUSTED
DC2129* NAVD 88     -       125.5    (meters)     412.     (feet)  GPS OBS
DC2129  ___________________________________________________________________
DC2129  EPOCH DATE  -        1998.50
DC2129  X           -  -2,448,208.976 (meters)                     COMP
DC2129  Y           -  -4,774,387.497 (meters)                     COMP
DC2129  Z           -   3,437,102.240 (meters)                     COMP
DC2129  LAPLACE CORR-           6.92  (seconds)                    DEFLEC99
DC2129  ELLIP HEIGHT-          90.97  (meters)                     GPS OBS
DC2129  GEOID HEIGHT-         -34.52  (meters)                     GEOID99
DC2129
DC2129  HORZ ORDER  -  A
DC2129  ELLP ORDER  -  THIRD     CLASS I
DC2129
DC2129.This mark is at Montgomery Field Airport (MYF)
DC2129
DC2129.ITRF positions are available for this station.
DC2129.The horizontal coordinates were established by GPS observations
DC2129.and adjusted by the National Geodetic Survey in April 2000.
DC2129.This is a SPECIAL STATUS position.  See SPECIAL STATUS under the
DC2129.DATUM ITEM on the data sheet items page.
DC2129.The horizontal coordinates are valid at the epoch date displayed above.
DC2129.The epoch date for horizontal control is a decimal equivalence
DC2129.of Year/Month/Day.
DC2129
DC2129.The orthometric height was determined by GPS observations and a
DC2129.high-resolution geoid model.
DC2129
DC2129.The X, Y, and Z were computed from the position and the ellipsoidal ht.
DC2129
DC2129.The Laplace correction was computed from DEFLEC99 derived deflections.
DC2129
DC2129.The ellipsoidal height was determined by GPS observations
DC2129.and is referenced to NAD 83.
DC2129
DC2129.The geoid height was determined by GEOID99.
DC2129
DC2129;                    North         East     Units   Scale      Converg.
DC2129;SPC CA 6     - 1,878,749.41  6,285,830.50   sFT  0.99999435 -0 29 36.1
DC2129;SPC CA 6     -   572,643.965 1,915,924.968   MT  0.99999435 -0 29 36.1
DC2129;UTM  11      - 3,631,167.620   486,162.108   MT  0.99960236 -0 04 48.4
DC2129
DC2129                          SUPERSEDED SURVEY CONTROL
DC2129
DC2129  ELLIP HT    -          90.97  (m)                      GP(       ) 3 1
DC2129  NAD 83(1992)-  32 49 06.32689(N)    117 08 52.18047(W) AD(1991.35) B
DC2129  ELLIP HT    -          91.04  (m)                      GP(1991.35) 4 1
DC2129
DC2129.Superseded values are not recommended for survey control.
DC2129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DC2129.See file dsdata.txt to determine how the superseded data were derived.
DC2129
DC2129_MARKER: DD = SURVEY DISK
DC2129_SETTING: 30 = SET IN A LIGHT STRUCTURE
DC2129_STAMPING: HPGN-CA SDGPS 17 1990
DC2129_PROJECTION: FLUSH
DC2129_MAGNETIC: N = NO MAGNETIC MATERIAL
DC2129_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
DC2129_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
DC2129+SATELLITE: SATELLITE OBSERVATIONS - May 19, 1998
DC2129
DC2129  HISTORY     - Date     Condition        Recov. By
DC2129  HISTORY     - 1990     MONUMENTED       CA-073
DC2129  HISTORY     - 19910405 GOOD
DC2129  HISTORY     - 19931129 GOOD             CADT
DC2129  HISTORY     - 19980519 GOOD             CADT
DC2129
DC2129                          STATION DESCRIPTION
DC2129
DC2129''DESCRIBED BY SAN DIEGO COUNTY CALIFORNIA 1990
DC2129''THE STATION IS LOCATED 7 MI (11.3 KM) NORTH OF DOWNTOWN SAN DIEGO, ON
DC2129''THE EAST SIDE OF STATE ROUTE 163, AND ON THE WEST SIDE OF MONTGOMERY
DC2129''FIELD AIRPORT.
DC2129''TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTE 163 AND
DC2129''STATE ROUTE 274, WHICH IS KNOWN LOCALLY AS BALBOA AVE, PROCEED EAST
DC2129''ON BALBOA AVE 0.1 MI (0.2 KM) TO KEARNY VILLA RD. TURN RIGHT, SOUTH,
DC2129''ON KEARNY VILLA RD AND DRIVE SOUTH 0.3 MI (0.5 KM) TO THE END OF A
DC2129''CURVE TO THE LEFT AND THE STATION ON THE LEFT.
DC2129''THE STATION IS 4 FT (1.2 M) BACK OF THE CURB LINE ON THE EAST SIDE OF
DC2129''KEARNY VILLA RD, NEAR THE NORTHEAST CORNER OF A 4 FT (1.2 M) BY 11 FT
DC2129''(3.4 M) CONCRETE DROP INLET BOX, 300 FT (91.4 M) SOUTHERLY OF THE
DC2129''EXTENSION OF RUNWAY 10L PROJECTED TO KEARY VILLA RD, 124 FT (37.8 M)
DC2129''NORTHEAST OF THE EAST LEG OF SIGN BRIDGE OVER THE FREEWAY, AND 174 FT
DC2129''(53.0 M) SOUTHEAST OF AS ELECTROLIER ON THE WEST SIDE OF THE ROAD.
DC2129
DC2129                          STATION RECOVERY (1991)
DC2129
DC2129''RECOVERED 1991
DC2129''RECOVERED IN GOOD CONDITION.
DC2129
DC2129                          STATION RECOVERY (1993)
DC2129
DC2129''RECOVERY NOTE BY CALTRANS 1993 (ATD)
DC2129''RECOVERED AS DESCRIBED.
DC2129
DC2129                          STATION RECOVERY (1998)
DC2129
DC2129''RECOVERY NOTE BY CALTRANS 1998 (ATD)
DC2129''RECOVERED AS DESCRIBED.