NC0671 ***********************************************************************
NC0671  DESIGNATION -  ORTON RM 1
NC0671  PID         -  NC0671
NC0671  STATE/COUNTY-  PA/ERIE
NC0671  USGS QUAD   -  NORTH EAST (1996)
NC0671
NC0671                         *CURRENT SURVEY CONTROL
NC0671  ___________________________________________________________________
NC0671* NAD 83(1986)-  42 14 01.     (N)    079 46 48.     (W)     SCALED
NC0671* NAVD 88     -       251.273  (meters)     824.38   (feet)  ADJUSTED
NC0671  ___________________________________________________________________
NC0671  GEOID HEIGHT-         -34.73  (meters)                     GEOID99
NC0671  DYNAMIC HT  -         251.183 (meters)     824.09  (feet)  COMP
NC0671  MODELED GRAV-     980,259.1   (mgal)                       NAVD 88
NC0671
NC0671  VERT ORDER  -  SECOND    CLASS 0
NC0671
NC0671.The horizontal coordinates were scaled from a topographic map and have
NC0671.an estimated accuracy of +/- 6 seconds.
NC0671
NC0671.The orthometric height was determined by differential leveling
NC0671.and adjusted by the National Geodetic Survey in June 1991.
NC0671
NC0671.The geoid height was determined by GEOID99.
NC0671
NC0671.The dynamic height is computed by dividing the NAVD 88
NC0671.geopotential number by the normal gravity value computed on the
NC0671.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
NC0671.degrees latitude (g = 980.6199 gals.).
NC0671
NC0671.The modeled gravity was interpolated from observed gravity values.
NC0671
NC0671;                    North         East    Units  Estimated Accuracy
NC0671;SPC PA N     -   231,520.      432,440.      MT  (+/- 180 meters Scaled)
NC0671
NC0671                          SUPERSEDED SURVEY CONTROL
NC0671
NC0671  NGVD 29     -       251.441  (m)          824.94   (f) ADJ UNCH    2 0
NC0671
NC0671.Superseded values are not recommended for survey control.
NC0671.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
NC0671.See file dsdata.txt to determine how the superseded data were derived.
NC0671
NC0671_MARKER: DR = REFERENCE MARK DISK
NC0671_SETTING: 36 = BRIDGE
NC0671_STAMPING: ORTON NO 1 1961
NC0671_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
NC0671
NC0671  HISTORY     - Date     Condition        Recov. By
NC0671  HISTORY     - 1961     MONUMENTED       CGS
NC0671
NC0671                          STATION DESCRIPTION
NC0671
NC0671''DESCRIBED BY COAST AND GEODETIC SURVEY 1961
NC0671''2.9 MI NE FROM NORTHEAST.
NC0671''TO REACH THE REFERENCE MARK FROM THE JUNCTION OF STATE HIGHWAY 89 AND
NC0671''U.S. HIGHWAY 20 AT THE SOUTHEAST CORNER OF THE PARK IN NORTH EAST, GO
NC0671''SOUTHEASTERLY ON U.S. HIGHWAY 20 FOR 2.9 MILES TO THE JUNCTION OF
NC0671''INTERSTATE 90 AND THE MARK ON THE LEFT AT THE SOUTHEAST CORNER OF THE
NC0671''OVERPASS OF THE WEST BOUND LANE OF INTERSTATE 90.  IT IS 16.3 FEET
NC0671''EAST OF THE APPROXIMATE CENTER OF THE WEST BOUND LANE OF INTERSTATE 90
NC0671''AND 3.4 FEET NORTH OF THE SOUTHEAST END OF BRIDGE.  IT IS SET IN A
NC0671''DRILL IN THE CURBING OF THE WEST BOUND LANE OF INTERSTATE 90 AND
NC0671''PROJECTS ABOUT 6 INCHES ABOVE THE SURFACE OF THE GROUND.