KV1494 ***********************************************************************
KV1494  DESIGNATION -  RV 2 RDGRR
KV1494  PID         -  KV1494
KV1494  STATE/COUNTY-  PA/LEHIGH
KV1494  USGS QUAD   -  ALLENTOWN EAST (1992)
KV1494
KV1494                         *CURRENT SURVEY CONTROL
KV1494  ___________________________________________________________________
KV1494* NAD 83(1986)-  40 35 08.     (N)    075 27 58.     (W)     SCALED
KV1494* NAVD 88     -        90.900  (meters)     298.23   (feet)  ADJUSTED
KV1494  ___________________________________________________________________
KV1494  GEOID HEIGHT-         -34.50  (meters)                     GEOID99
KV1494  DYNAMIC HT  -          90.855 (meters)     298.08  (feet)  COMP
KV1494  MODELED GRAV-     980,133.6   (mgal)                       NAVD 88
KV1494
KV1494  VERT ORDER  -  FIRST     CLASS II
KV1494
KV1494.The horizontal coordinates were scaled from a topographic map and have
KV1494.an estimated accuracy of +/- 6 seconds.
KV1494
KV1494.The orthometric height was determined by differential leveling
KV1494.and adjusted by the National Geodetic Survey in June 1991.
KV1494
KV1494.The geoid height was determined by GEOID99.
KV1494
KV1494.The dynamic height is computed by dividing the NAVD 88
KV1494.geopotential number by the normal gravity value computed on the
KV1494.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
KV1494.degrees latitude (g = 980.6199 gals.).
KV1494
KV1494.The modeled gravity was interpolated from observed gravity values.
KV1494
KV1494;                    North         East    Units  Estimated Accuracy
KV1494;SPC PA S     -   141,540.      793,330.      MT  (+/- 180 meters Scaled)
KV1494
KV1494                          SUPERSEDED SURVEY CONTROL
KV1494
KV1494  NGVD 29     -        91.116  (m)          298.94   (f) ADJUSTED    1 2
KV1494
KV1494.Superseded values are not recommended for survey control.
KV1494.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
KV1494.See file dsdata.txt to determine how the superseded data were derived.
KV1494
KV1494_MARKER: R = RIVET
KV1494_SETTING: 36 = BRIDGE COPING
KV1494_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
KV1494
KV1494  HISTORY     - Date     Condition        Recov. By
KV1494  HISTORY     - 1932     MONUMENTED       RDGRR
KV1494  HISTORY     - 1932     GOOD             CGS
KV1494  HISTORY     - 1971     GOOD             PADT
KV1494  HISTORY     - 1987     GOOD             LOCSUR
KV1494
KV1494                          STATION DESCRIPTION
KV1494
KV1494''DESCRIBED BY COAST AND GEODETIC SURVEY 1932
KV1494''AT ALLENTOWN.
KV1494''AT ALLENTOWN, LEHIGH COUNTY, ON THE READING CO. RAILROAD, 0.3
KV1494''MILE NORTHEAST OF THE MACK TRUCK CO. PLANT, AT BRIDGE 34/11
KV1494''(UNDERGRADE CROSSING OF DIXON STREET), IN THE TOP OF THE
KV1494''NORTHEAST END OF THE NORTHWEST COPING, AND NEAR THE CHISELED LETTERS
KV1494''B M.  A STANDARD MONEL-METAL RIVET WITHIN A CHISELED SQUARE.
KV1494
KV1494                          STATION RECOVERY (1971)
KV1494
KV1494''RECOVERY NOTE BY PA DEPT OF TRANSP 1971
KV1494''RECOVERED IN GOOD CONDITION.
KV1494
KV1494                          STATION RECOVERY (1987)
KV1494
KV1494''RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1987 (CT)
KV1494''RECOVERED IN GOOD CONDITION.