DN0681 ***********************************************************************
DN0681  DESIGNATION -  L 949
DN0681  PID         -  DN0681
DN0681  STATE/COUNTY-  TX/DENTON
DN0681  USGS QUAD   -  DENTON WEST (1974)
DN0681
DN0681                         *CURRENT SURVEY CONTROL
DN0681  ___________________________________________________________________
DN0681* NAD 83(1986)-  33 13 48.     (N)    097 09 36.     (W)     SCALED
DN0681* NAVD 88     -       207.798  (meters)     681.75   (feet)  ADJUSTED
DN0681  ___________________________________________________________________
DN0681  GEOID HEIGHT-         -26.62  (meters)                     GEOID99
DN0681  DYNAMIC HT  -         207.564 (meters)     680.98  (feet)  COMP
DN0681  MODELED GRAV-     979,508.4   (mgal)                       NAVD 88
DN0681
DN0681  VERT ORDER  -  SECOND    CLASS 0
DN0681
DN0681.The horizontal coordinates were scaled from a topographic map and have
DN0681.an estimated accuracy of +/- 6 seconds.
DN0681
DN0681.The orthometric height was determined by differential leveling
DN0681.and adjusted by the National Geodetic Survey in June 1991.
DN0681
DN0681.The geoid height was determined by GEOID99.
DN0681
DN0681.The dynamic height is computed by dividing the NAVD 88
DN0681.geopotential number by the normal gravity value computed on the
DN0681.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
DN0681.degrees latitude (G = 980.6199 gals.).
DN0681
DN0681.The modeled gravity was interpolated from observed gravity values.
DN0681
DN0681;                    North         East    Units  Estimated Accuracy
DN0681;SPC TXNC     - 2,174,160.      724,880.      MT  (+/- 180 meters Scaled)
DN0681
DN0681                          SUPERSEDED SURVEY CONTROL
DN0681
DN0681  NGVD 29     -       207.773  (m)          681.67   (f) ADJ UNCH    2 0
DN0681
DN0681.Superseded values are not recommended for survey control.
DN0681.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DN0681.See file dsdata.txt to determine how the superseded data were derived.
DN0681
DN0681_MARKER: DB = BENCH MARK DISK
DN0681_SETTING: 30 = CULVERT
DN0681_STAMPING: L 949 1946
DN0681_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
DN0681
DN0681  HISTORY     - Date     Condition        Recov. By
DN0681  HISTORY     - 1946     MONUMENTED       CGS
DN0681  HISTORY     - 1960     GOOD             NGS
DN0681  HISTORY     - 1980     MARK NOT FOUND   NGS
DN0681  HISTORY     - 19950630 MARK NOT FOUND   USPSQD
DN0681  HISTORY     - 19980214 POOR             USPSQD
DN0681
DN0681                          STATION DESCRIPTION
DN0681
DN0681''DESCRIBED BY NATIONAL GEODETIC SURVEY 1960
DN0681''2.7 MI W FROM DENTON.
DN0681''2.7 MILES NORTHWEST OF DENTON, DENTON COUNTY.  THIS BENCH MARK MAY BE
DN0681''REACHED FROM THE POST OFFICE BY GOING 0.1 MILE WEST ALONG MCKINNEY
DN0681''STREET, THENCE 1.0 MILE NORTH ALONG U.S. HIGHWAY 77, AND THENCE 1.6
DN0681''MILES WEST ALONG STATE HIGHWAY 24.  IT IS AT THE INTERSECTION OF A
DN0681''NORTH-AND-SOUTH GRAVEL ROAD, AT A 3- BY 8-FOOT CONCRETE CULVERT, IN
DN0681''THE TOP OF THE NORTHWEST END OF THE SOUTHWEST HEADWALL, 36 FEET SOUTH
DN0681''OF THE CENTERLINE OF THE HIGHWAY, AND LEVEL WITH THE HIGHWAY.  A
DN0681''STANDARD DISK, STAMPED L 949 1946.
DN0681
DN0681                          STATION RECOVERY (1980)
DN0681
DN0681''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
DN0681''MARK SEARCHED FOR AND NOT FOUND. THE MARK HAS BEEN DESTROYED DUE TO
DN0681''HIGHWAY CONSTRUCTION ALTHOUGH NO PART OF THE DISK OR MONUMENT COULD
DN0681''BE FOUND. THE HIGHWAY HAS BEEN 4 LANED AND THE MEASUREMENTS PLACE THE
DN0681''MARK IN THE CENTER OF THE NEW LANE.
DN0681
DN0681                          STATION RECOVERY (1995)
DN0681
DN0681''RECOVERY NOTE BY US POWER SQUADRON 1995
DN0681''MARK NOT FOUND.
DN0681
DN0681                          STATION RECOVERY (1998)
DN0681
DN0681''RECOVERY NOTE BY US POWER SQUADRON 1998
DN0681''MARK RECOVERED IN POOR CONDITION.