BL1644 ***********************************************************************
BL1644  DESIGNATION -  E 1216
BL1644  PID         -  BL1644
BL1644  STATE/COUNTY-  TX/HARRIS
BL1644  USGS QUAD   -  HOCKLEY (1980)
BL1644
BL1644                         *CURRENT SURVEY CONTROL
BL1644  ___________________________________________________________________
BL1644* NAD 83(1986)-  30 00 18.     (N)    095 48 53.     (W)     SCALED
BL1644* NAVD 88     -        62.059  (meters)     203.61   (feet)  ADJUSTED
BL1644  ___________________________________________________________________
BL1644  GEOID HEIGHT-         -27.44  (meters)                     GEOID99
BL1644  DYNAMIC HT  -          61.974 (meters)     203.33  (feet)  COMP
BL1644  MODELED GRAV-     979,283.0   (mgal)                       NAVD 88
BL1644
BL1644  VERT ORDER  -  FIRST     CLASS II
BL1644
BL1644.The horizontal coordinates were scaled from a topographic map and have
BL1644.an estimated accuracy of +/- 6 seconds.
BL1644
BL1644.The orthometric height was determined by differential leveling
BL1644.and adjusted by the National Geodetic Survey in June 1991.
BL1644
BL1644.The geoid height was determined by GEOID99.
BL1644
BL1644.The dynamic height is computed by dividing the NAVD 88
BL1644.geopotential number by the normal gravity value computed on the
BL1644.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
BL1644.degrees latitude (G = 980.6199 gals.).
BL1644
BL1644.The modeled gravity was interpolated from observed gravity values.
BL1644
BL1644;                    North         East    Units  Estimated Accuracy
BL1644;SPC TXSC     - 4,244,870.      907,260.      MT  (+/- 180 meters Scaled)
BL1644
BL1644                          SUPERSEDED SURVEY CONTROL
BL1644
BL1644  NGVD 29     -        62.051  (m)          203.58   (f) ADJUSTED    1 2
BL1644
BL1644.Superseded values are not recommended for survey control.
BL1644.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
BL1644.See file dsdata.txt to determine how the superseded data were derived.
BL1644
BL1644_MARKER: DB = BENCH MARK DISK
BL1644_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
BL1644+WITH SETTING: INFORMATION.
BL1644_STAMPING: E 1216 1973
BL1644_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
BL1644
BL1644  HISTORY     - Date     Condition        Recov. By
BL1644  HISTORY     - 1953     MONUMENTED       CGS
BL1644  HISTORY     - 1978     GOOD             NGS
BL1644  HISTORY     - 1986     GOOD             NGS
BL1644  HISTORY     - 1987     GOOD             USPSQD
BL1644  HISTORY     - 19940326 GOOD             USPSQD
BL1644
BL1644                          STATION DESCRIPTION
BL1644
BL1644''DESCRIBED BY COAST AND GEODETIC SURVEY 1953
BL1644''2.7 MI SE FROM HOCKLEY.
BL1644''ABOUT 2 MILES SOUTHEAST ALONG US HIGHWAY 290 FROM THE JUNCTION OF US
BL1644''HIGHWAY 290 AND HEGAR RD., THENCE 0.7 MILE SOUTH ALONG KATY-HOCKLEY
BL1644''RD., 41.6 FEET NORTH OF A POWER POLE, 28.5 FEET EAST OF THE CENTER
BL1644''LINE OF THE ROAD, 0.6 FOOT WEST OF A FENCE, 0.8 FOOT SOUTH OF A METAL
BL1644''WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND IS A DISK SET ON TOP OF A
BL1644''4-FOOT LENGTH OF 5/8-INCH COPPER COATED STEEL ROD, AND PROTECTED BY A
BL1644''6-INCH METAL PIPE WHICH PROJECTS 0.1 FOOT.
BL1644
BL1644                          STATION RECOVERY (1978)
BL1644
BL1644''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
BL1644''RECOVERED IN GOOD CONDITION.
BL1644
BL1644                          STATION RECOVERY (1986)
BL1644
BL1644''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
BL1644''RECOVERED IN GOOD CONDITION.
BL1644
BL1644                          STATION RECOVERY (1987)
BL1644
BL1644''RECOVERY NOTE BY US POWER SQUADRON 1987 (MM)
BL1644''RECOVERED IN GOOD CONDITION.
BL1644
BL1644                          STATION RECOVERY (1994)
BL1644
BL1644''RECOVERY NOTE BY US POWER SQUADRON 1994
BL1644''RECOVERED IN GOOD CONDITION.