GG0056 ***********************************************************************
GG0056  DESIGNATION -  RV 4
GG0056  PID         -  GG0056
GG0056  STATE/COUNTY-  AR/BENTON
GG0056  USGS QUAD   -  PEA RIDGE (1977)
GG0056
GG0056                         *CURRENT SURVEY CONTROL
GG0056  ___________________________________________________________________
GG0056* NAD 83(1986)-  36 25 10.     (N)    094 03 03.     (W)     SCALED
GG0056* NAVD 88     -       386.333  (meters)    1267.49   (feet)  ADJUSTED
GG0056  ___________________________________________________________________
GG0056  GEOID HEIGHT-         -28.17  (meters)                     GEOID99
GG0056  DYNAMIC HT  -         385.994 (meters)    1266.38  (feet)  COMP
GG0056  MODELED GRAV-     979,741.5   (mgal)                       NAVD 88
GG0056
GG0056  VERT ORDER  -  FIRST     CLASS II
GG0056
GG0056.The horizontal coordinates were scaled from a topographic map and have
GG0056.an estimated accuracy of +/- 6 seconds.
GG0056
GG0056.The orthometric height was determined by differential leveling
GG0056.and adjusted by the National Geodetic Survey in June 1991.
GG0056
GG0056.The geoid height was determined by GEOID99.
GG0056
GG0056.The dynamic height is computed by dividing the NAVD 88
GG0056.geopotential number by the normal gravity value computed on the
GG0056.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
GG0056.degrees latitude (G = 980.6199 gals.).
GG0056
GG0056.The modeled gravity was interpolated from observed gravity values.
GG0056
GG0056;                    North         East    Units  Estimated Accuracy
GG0056;SPC AR N     -   233,360.      216,080.      MT  (+/- 180 meters Scaled)
GG0056
GG0056                          SUPERSEDED SURVEY CONTROL
GG0056
GG0056  NGVD 29     -       386.190  (m)         1267.03   (f) ADJ UNCH    1 2
GG0056
GG0056.Superseded values are not recommended for survey control.
GG0056.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
GG0056.See file dsdata.txt to determine how the superseded data were derived.
GG0056
GG0056_MARKER: R = RIVET
GG0056_SETTING: 36 = BRIDGE
GG0056_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
GG0056
GG0056  HISTORY     - Date     Condition        Recov. By
GG0056  HISTORY     - UNK      MONUMENTED       SLSFRR
GG0056  HISTORY     - 1961     GOOD             NGS
GG0056  HISTORY     - 1987     GOOD             USPSQD
GG0056  HISTORY     - 1987     GOOD             USPSQD
GG0056  HISTORY     - 1987     GOOD             USPSQD
GG0056
GG0056                          STATION DESCRIPTION
GG0056
GG0056''DESCRIBED BY NATIONAL GEODETIC SURVEY 1961
GG0056''2.1 MI N FROM AVOCA.
GG0056''2.1 MILES NORTH ALONG THE ST. LOUIS-SAN FRANCISCO RAILWAY FROM
GG0056''AVOCA, BENTON COUNTY, 5-1/2 POLES SOUTH OF MILEPOST 325, ON THE
GG0056''WEST SIDE OF THE TRACK, AT BRIDGE 325.2 OVER SUGAR CREEK, AND
GG0056''IN THE TOP OF THE NORTH ABUTMENT.  A STANDARD MONEL-METAL RIVET.
GG0056
GG0056                          STATION RECOVERY (1987)
GG0056
GG0056''RECOVERY NOTE BY US POWER SQUADRON 1987 (MFS)
GG0056''RECOVERED IN GOOD CONDITION.
GG0056
GG0056                          STATION RECOVERY (1987)
GG0056
GG0056''RECOVERY NOTE BY US POWER SQUADRON 1987 (TWS)
GG0056''RECOVERED IN GOOD CONDITION.
GG0056
GG0056                          STATION RECOVERY (1987)
GG0056
GG0056''RECOVERY NOTE BY US POWER SQUADRON 1987 (VWK)
GG0056''RECOVERED IN GOOD CONDITION.