HL0424 ***********************************************************************
HL0424  DESIGNATION -  M 439
HL0424  PID         -  HL0424
HL0424  STATE/COUNTY-  CO/SAN JUAN
HL0424  USGS QUAD   -  SILVERTON (1984)
HL0424
HL0424                         *CURRENT SURVEY CONTROL
HL0424  ___________________________________________________________________
HL0424* NAD 83(1986)-  37 48 18.     (N)    107 40 15.     (W)     SCALED
HL0424* NAVD 88     -      2822.745  (meters)    9260.96   (feet)  ADJUSTED
HL0424  ___________________________________________________________________
HL0424  GEOID HEIGHT-         -15.35  (meters)                     GEOID99
HL0424  DYNAMIC HT  -        2818.684 (meters)    9247.63  (feet)  COMP
HL0424  MODELED GRAV-     979,089.6   (mgal)                       NAVD 88
HL0424
HL0424  VERT ORDER  -  FIRST     CLASS II
HL0424
HL0424.The horizontal coordinates were scaled from a topographic map and have
HL0424.an estimated accuracy of +/- 6 seconds.
HL0424
HL0424.The orthometric height was determined by differential leveling
HL0424.and adjusted by the National Geodetic Survey in June 1991.
HL0424
HL0424.The geoid height was determined by GEOID99.
HL0424
HL0424.The dynamic height is computed by dividing the NAVD 88
HL0424.geopotential number by the normal gravity value computed on the
HL0424.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
HL0424.degrees latitude (G = 980.6199 gals.).
HL0424
HL0424.The modeled gravity was interpolated from observed gravity values.
HL0424
HL0424;                    North         East    Units  Estimated Accuracy
HL0424;SPC CO S     -   433,360.      723,260.      MT  (+/- 180 meters Scaled)
HL0424
HL0424                          SUPERSEDED SURVEY CONTROL
HL0424
HL0424.No superseded survey control is available for this station.
HL0424
HL0424_MARKER: I = METAL ROD
HL0424_SETTING: 15 = METAL ROD DRIVEN INTO GROUND. SEE TEXT FOR ADDITIONAL
HL0424+WITH SETTING: INFORMATION.
HL0424_STAMPING: M 439 1985
HL0424_PROJECTION: FLUSH
HL0424_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
HL0424_ROD/PIPE-DEPTH: 2.4  meters
HL0424
HL0424  HISTORY     - Date     Condition        Recov. By
HL0424  HISTORY     - 1985     MONUMENTED       NGS
HL0424  HISTORY     - 19910705 GOOD             USPSQD
HL0424
HL0424                          STATION DESCRIPTION
HL0424
HL0424''DESCRIBED BY NATIONAL GEODETIC SURVEY 1985
HL0424''IN SILVERTON.
HL0424''IN SILVERTON, AT THE JUNCTION OF U.S. HIGHWAY 550 AND STATE HIGHWAY
HL0424''110, IN A TRIANGLE FORMED BY THE HIGHWAY JUNCTION, 48.1 M (157.8 FT)
HL0424''NORTHWEST OF THE CENTERLINE OF STATE HIGHWAY 110, 21.2 M (69.6 FT)
HL0424''SOUTH OF A PAVED ROAD, 20.9 M (68.6 FT) NORTHEAST OF THE CENTERLINE OF
HL0424''U.S. HIGHWAY 550, AND 1.6 M (5.2 FT) NORTHEAST OF A UTILITY POLE.
HL0424''NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP.
HL0424''THE MARK IS 0.45 METERS  SW FROM  A WITNESS POST
HL0424''THE MARK IS 0.6 M BELOW THE HIGHWAY.
HL0424
HL0424                          STATION RECOVERY (1991)
HL0424
HL0424''RECOVERY NOTE BY US POWER SQUADRON 1991 (WLR)
HL0424''RECOVERED IN GOOD CONDITION.