HS4129 ***********************************************************************
HS4129  DESIGNATION -  E 1259
HS4129  PID         -  HS4129
HS4129  STATE/COUNTY-  CA/ALAMEDA
HS4129  USGS QUAD   -  ALTAMONT (1981)
HS4129
HS4129                         *CURRENT SURVEY CONTROL
HS4129  ___________________________________________________________________
HS4129* NAD 83(1986)-  37 42 09.     (N)    121 44 41.     (W)     SCALED
HS4129* NAVD 88     -       156.56   (+/-2cm)     513.6    (feet)  VERTCON
HS4129  ___________________________________________________________________
HS4129  GEOID HEIGHT-         -32.08  (meters)                     GEOID99
HS4129
HS4129  VERT ORDER  -  FIRST     CLASS I (See Below)
HS4129
HS4129.The horizontal coordinates were scaled from a topographic map and have
HS4129.an estimated accuracy of +/- 6 seconds.
HS4129
HS4129.The NAVD 88 height was computed by applying the VERTCON shift value to
HS4129.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
HS4129.The vertical order pertains to the superseded datum.
HS4129
HS4129.The geoid height was determined by GEOID99.
HS4129
HS4129;                    North         East    Units  Estimated Accuracy
HS4129;SPC CA 3     -   634,180.    1,890,240.      MT  (+/- 180 meters Scaled)
HS4129
HS4129                          SUPERSEDED SURVEY CONTROL
HS4129
HS4129  NGVD 29     -       155.755  (m)          511.01   (f) ADJUSTED    1 1
HS4129
HS4129.Superseded values are not recommended for survey control.
HS4129.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HS4129.See file dsdata.txt to determine how the superseded data were derived.
HS4129
HS4129_MARKER: DB = BENCH MARK DISK
HS4129_SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+)
HS4129_STAMPING: E 1259 1974
HS4129_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
HS4129
HS4129  HISTORY     - Date     Condition        Recov. By
HS4129  HISTORY     - 1974     MONUMENTED       NGS
HS4129
HS4129                          STATION DESCRIPTION
HS4129
HS4129''DESCRIBED BY NATIONAL GEODETIC SURVEY 1974
HS4129''0.6 KM (0.35 MI) WEST FROM LIVERMORE.
HS4129''0.35 MILES WEST ALONG INTERSTATE HIGHWAY 580 FROM THE STATE HIGHWAY 84
HS4129''(FIRST STREET) OVERPASS IN LIVERMORE, AT AN ANGLE IN THE SOUTH
HS4129''FREEWAY RIGHT OF WAY FENCE, 53 FEET SOUTH OF THE SOUTH MOST
HS4129''CENTERLINE OF THE EAST BOUND HIGHWAY LANES, 98.5 FEET WEST OF THE
HS4129''NORTHEAST END OF THE SOUTHEAST CONCRETE HEADWALL OF A TRIPLE CONCRETE
HS4129''BOX CULVERT, 2.0 FEET NORTH OF THE FENCE, 1.5 FEET EAST OF A METAL
HS4129''WITNESS POST, ABOUT 2 FEET LOWER THAN THE HIGHWAY, AND A DISK ON THE
HS4129''TOP OF A COPPER COATED ROD DRIVEN TO GRADUAL REFUSAL AT A DEPTH OF 19
HS4129''FEET.  THE DISK IS 0.3 FOOT UNDERGROUND AND IS PROTECTED BY A 4-INCH
HS4129''PLASTIC PIPE WHICH PROJECTS 0.2 FOOT AND IS ENCASED IN CONCRETE.