AB7677 ***********************************************************************
AB7677  DESIGNATION -  HPGN D CA 04 GE
AB7677  PID         -  AB7677
AB7677  STATE/COUNTY-  CA/SAN FRANCISCO
AB7677  USGS QUAD   -  SAN FRANCISCO SOUTH (1995)
AB7677
AB7677                         *CURRENT SURVEY CONTROL
AB7677  ___________________________________________________________________
AB7677* NAD 83(1992)-  37 44 00.31877(N)    122 29 49.01603(W)     ADJUSTED
AB7677* NAVD 88     -        23.69   (meters)      77.7    (feet)  LEVELING
AB7677  ___________________________________________________________________
AB7677  EPOCH DATE  -        1991.35
AB7677  X           -  -2,713,450.228 (meters)                     COMP
AB7677  Y           -  -4,259,764.250 (meters)                     COMP
AB7677  Z           -   3,882,080.100 (meters)                     COMP
AB7677  LAPLACE CORR-           6.64  (seconds)                    DEFLEC99
AB7677  ELLIP HEIGHT-          -8.94  (meters)                     GPS OBS
AB7677  GEOID HEIGHT-         -32.66  (meters)                     GEOID99
AB7677
AB7677  HORZ ORDER  -  FIRST
AB7677  VERT ORDER  -  THIRD ?
AB7677  ELLP ORDER  -  FOURTH    CLASS I
AB7677
AB7677.The horizontal coordinates were established by GPS observations
AB7677.and adjusted by the National Geodetic Survey in October 1996.
AB7677.The horizontal coordinates are valid at the epoch date displayed above.
AB7677.The epoch date for horizontal control is a decimal equivalence
AB7677.of Year/Month/Day.
AB7677
AB7677.The orthometric height was determined by differential leveling.
AB7677.The vertical network tie was performed by a horz. field party for horz.
AB7677.obs reductions. Reset procedures were used to establish the elevation.
AB7677
AB7677.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AB7677
AB7677.The Laplace correction was computed from DEFLEC99 derived deflections.
AB7677
AB7677.The ellipsoidal height was determined by GPS observations
AB7677.and is referenced to NAD 83.
AB7677
AB7677.The geoid height was determined by GEOID99.
AB7677
AB7677;                    North         East     Units   Scale      Converg.
AB7677;SPC CA 3     - 2,095,678.55  5,984,226.43   sFT  0.99992923 -1 13 21.3
AB7677;SPC CA 3     -   638,764.100 1,823,995.865   MT  0.99992923 -1 13 21.3
AB7677;UTM  10      - 4,176,357.383   544,326.086   MT  0.99962420 +0 18 28.3
AB7677
AB7677                          SUPERSEDED SURVEY CONTROL
AB7677
AB7677  ELLIP HT    -          -8.94  (m)                      GP(       ) 4 1
AB7677
AB7677.Superseded values are not recommended for survey control.
AB7677.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AB7677.See file dsdata.txt to determine how the superseded data were derived.
AB7677
AB7677_MARKER: DD = SURVEY DISK
AB7677_SETTING: 50 = ALUMINUM ALLOY ROD W/O SLEEVE (10 FT.+)
AB7677_STAMPING: CA-HPGN-DENSIFICATION STA. 04-GE 1994
AB7677_PROJECTION: FLUSH
AB7677_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
AB7677_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
AB7677_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AB7677+SATELLITE: SATELLITE OBSERVATIONS - 1994
AB7677_ROD/PIPE-DEPTH: 7.8  meters
AB7677
AB7677  HISTORY     - Date     Condition        Recov. By
AB7677  HISTORY     - 1994     MONUMENTED       CADT
AB7677
AB7677                          STATION DESCRIPTION
AB7677
AB7677''DESCRIBED BY CALTRANS 1994 (DAN)
AB7677''THE STATION IS LOCATED NEAR THE INTERSECTION OF SKYLINE BLVD (STATE
AB7677''HIGHWAY 35) AND SLOAT BLVD AT THE NORTHEAST CORNER OF THE SAN
AB7677''FRANCISCO ZOO, ABOUT 6 MI (9.7 KM) SOUTHWEST OF DOWNTOWN SAN
AB7677''FRANCISCO.  TO REACH THE STATION FROM THE INTERSECTION OF SLOAT BLVD
AB7677''(STATE HIGHWAY 35) AND 19TH AVE (STATE HIGHWAY 1) , GO WEST ON SLOAT
AB7677''BLVD, CROSSING OVER SUNSET BLVD, FOR 1.2 MI (1.9 KM) TO THE
AB7677''Y-INTERSECTION WITH SKYLINE BLVD (STATE HIGHWAY 35) .  BEAR LEFT AND
AB7677''GO SOUTHWEST ON SKYLINE BLVD FOR ABOUT 165 FT (50.3 M) TO THE STATION
AB7677''ON THE LEFT IN THE RAISED MEDIAN ISLAND AT POST MILE 1.8.  THE STATION
AB7677''IS A SURVEY DISK ENCASED IN PVC PIPE WITH ACCESS COVER SET IN CONCRETE
AB7677''FLUSH WITH THE SURFACE OF THE RAISED MEDIAN ISLAND, ABOUT 165 FT (50.3
AB7677''M) SOUTHWEST OF THE INTERSECTION OF SKYLINE BLVD AND SLOAT BLVD, 118.5
AB7677''FT (36.1 M) NORTHWEST OF THE NORTHWEST CORNER OF THE HOUSE AT 379
AB7677''SKYLINE BLVD, 96.4 FT (29.4 M) NORTHEAST OF A LIGHT POST AT THE SOUTH
AB7677''END OF THE MEDIAN ISLAND, 74.3 FT (22.6 M) SOUTHWEST OF LIGHT POST
AB7677''E0/1 AT THE NORTH END OF THE MEDIAN ISLAND, 65.0 FT (19.8 M) WEST OF
AB7677''AND ACROSS THE NORTH-BOUND LANES OF SKYLINE BLVD FROM LIGHT POST 0/6,
AB7677''18.4 FT (5.6 M) EAST OF THE WEST CURB OF THE MEDIAN ISLAND AND 7.3 FT
AB7677''(2.2 M) WEST OF THE EAST CURB OF THE MEDIAN ISLAND.  THE DISK IS 0.3
AB7677''FT (0.1 M) BELOW THE LID OF THE ACCESS COVER.  THIS STATION WAS
AB7677''OCCUPIED AS PART OF A CALIFORNIA HPGN DENSIFICATION SURVEY IN 1994.