HT0171 ***********************************************************************
HT0171  DESIGNATION -  T 571 EBMUD
HT0171  PID         -  HT0171
HT0171  STATE/COUNTY-  CA/CONTRA COSTA
HT0171  USGS QUAD   -  OAKLAND EAST (1997)
HT0171
HT0171                         *CURRENT SURVEY CONTROL
HT0171  ___________________________________________________________________
HT0171* NAD 83(1986)-  37 49 47.     (N)    122 09 56.     (W)     SCALED
HT0171* NAVD 88     -       190.34   (+/-2cm)     624.5    (feet)  VERTCON
HT0171  ___________________________________________________________________
HT0171  GEOID HEIGHT-         -32.11  (meters)                     GEOID99
HT0171
HT0171  VERT ORDER  -  FIRST     CLASS II (See Below)
HT0171
HT0171.The horizontal coordinates were scaled from a topographic map and have
HT0171.an estimated accuracy of +/- 6 seconds.
HT0171
HT0171.The NAVD 88 height was computed by applying the VERTCON shift value to
HT0171.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
HT0171.The vertical order pertains to the superseded datum.
HT0171
HT0171.The geoid height was determined by GEOID99.
HT0171
HT0171;                    North         East    Units  Estimated Accuracy
HT0171;SPC CA 3     -   648,880.    1,853,390.      MT  (+/- 180 meters Scaled)
HT0171
HT0171                          SUPERSEDED SURVEY CONTROL
HT0171
HT0171  NGVD 29     -       189.489  (m)          621.68   (f) ADJ UNCH    1 2
HT0171
HT0171.Superseded values are not recommended for survey control.
HT0171.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HT0171.See file dsdata.txt to determine how the superseded data were derived.
HT0171
HT0171_MARKER: DD = SURVEY DISK
HT0171_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
HT0171_STAMPING: T 571 1939
HT0171_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
HT0171+STABILITY: SURFACE MOTION
HT0171
HT0171  HISTORY     - Date     Condition        Recov. By
HT0171  HISTORY     - 1939     MONUMENTED       EBMUD
HT0171  HISTORY     - 1962     GOOD             NGS
HT0171  HISTORY     - 1987     MARK NOT FOUND   USPSQD
HT0171
HT0171                          STATION DESCRIPTION
HT0171
HT0171''DESCRIBED BY NATIONAL GEODETIC SURVEY 1962
HT0171''3.4 MI W FROM MORAGA.
HT0171''1.9 MILES SOUTHWEST ALONG CANYON ROAD FROM THE POST OFFICE AT
HT0171''MORAGA, THENCE 1.5 MILES NORTHWEST ALONG PINEHURST ROAD, 105
HT0171''FEET SOUTHWEST OF AND ACROSS THE ROAD FROM THE CANYON STORE, 22.0
HT0171''FEET SOUTHWEST OF THE CENTERLINE OF THE ROAD, 1.5 FEET SOUTHWEST
HT0171''OF A FENCE LINE, 1.0 FOOT WEST OF THE WEST END OF A STONE
HT0171''RETAINING WALL OF A CULVERT, AND SET IN THE TOP OF A CONCRETE
HT0171''POST 0.4 FOOT BELOW THE SURFACE OF THE GROUND.
HT0171
HT0171                          STATION RECOVERY (1987)
HT0171
HT0171''RECOVERY NOTE BY US POWER SQUADRON 1987 (CAP)
HT0171''MARK NOT FOUND.