HL0283 ***********************************************************************
HL0283  DESIGNATION -  9302
HL0283  PID         -  HL0283
HL0283  STATE/COUNTY-  CO/SAN JUAN
HL0283  USGS QUAD   -  SILVERTON (1984)
HL0283
HL0283                         *CURRENT SURVEY CONTROL
HL0283  ___________________________________________________________________
HL0283* NAD 83(1986)-  37 48 41.     (N)    107 39 51.     (W)     SCALED
HL0283* NAVD 88     -      2837.962  (meters)    9310.88   (feet)  POSTED
HL0283  ___________________________________________________________________
HL0283  GEOID HEIGHT-         -15.33  (meters)                     GEOID99
HL0283  DYNAMIC HT  -        2833.880 (meters)    9297.49  (feet)  COMP
HL0283  MODELED GRAV-     979,088.7   (mgal)                       NAVD 88
HL0283
HL0283  VERT ORDER  -  * POSTED, Code A , SEE BELOW
HL0283
HL0283.The horizontal coordinates were scaled from a topographic map and have
HL0283.an estimated accuracy of +/- 6 seconds.
HL0283
HL0283.The orthometric height was determined by differential leveling
HL0283.and adjusted by the National Geodetic Survey in 1992.
HL0283.* This is a POSTED BENCH MARK height.  Code A indicates a distribution
HL0283.rate of 0.0 thru 1.0 mm/km.
HL0283
HL0283.The geoid height was determined by GEOID99.
HL0283
HL0283.The dynamic height is computed by dividing the NAVD 88
HL0283.geopotential number by the normal gravity value computed on the
HL0283.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
HL0283.degrees latitude (G = 980.6199 gals.).
HL0283
HL0283.The modeled gravity was interpolated from observed gravity values.
HL0283
HL0283;                    North         East    Units  Estimated Accuracy
HL0283;SPC CO S     -   434,050.      723,860.      MT  (+/- 180 meters Scaled)
HL0283
HL0283                          SUPERSEDED SURVEY CONTROL
HL0283
HL0283  NGVD 29     -      2836.306  (m)         9305.45   (f) ADJ UNCH    1 2
HL0283
HL0283.Superseded values are not recommended for survey control.
HL0283.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HL0283.See file dsdata.txt to determine how the superseded data were derived.
HL0283
HL0283_MARKER: DD = SURVEY DISK
HL0283_SETTING: 0 = UNSPECIFIED SETTING
HL0283_STAMPING: 9302 DUR
HL0283_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
HL0283
HL0283  HISTORY     - Date     Condition        Recov. By
HL0283  HISTORY     - UNK      MONUMENTED       USGS
HL0283  HISTORY     - 1928     GOOD             NGS
HL0283  HISTORY     - 1943     GOOD             NGS
HL0283  HISTORY     - 1985     MARK NOT FOUND   NGS
HL0283
HL0283                          STATION DESCRIPTION
HL0283
HL0283''DESCRIBED BY NATIONAL GEODETIC SURVEY 1928
HL0283''IN SILVERTON.
HL0283''IN SOUTHEAST CORNER OF GRAND HOTEL BLOCK, 2.5 FEET ABOVE THE SIDEWALK,
HL0283''AT NORTHWEST CORNER OF GREENE AND 12TH STREETS.  NOTE-- HOTEL NAME
HL0283''CHANGED TO IMPERIAL HOTEL.
HL0283
HL0283                          STATION RECOVERY (1943)
HL0283
HL0283''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1943
HL0283''RECOVERED IN GOOD CONDITION.
HL0283
HL0283                          STATION RECOVERY (1985)
HL0283
HL0283''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
HL0283''THE IMPRINT OF THE DISK IS ALL THAT REMAINS.