Details for Benchmark: AB2468
N 39° 33.705 W 107° 21.983 (NAD 83)
Coordinates may not be exact. Altitude is GPS OBS and location is ADJUSTED. (more info)
- In GARFIELD county, CO View Original Datasheet
- Marker Type:
- horizontal control disk
- set into the top of a round concrete monument
- May hold, but of type commonly subject to surface motion.
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Documented History (by the NGS)
|01/01/1994 by NGS (MONUMENTED)
|DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 (RSC)
THE STATION IS LOCATED IN THE WESTERN PART OF GLENWOOD SPRINGS, IN THE NORTHEAST 1/4 OF SECTION 6, T 6 S, R 89 W, AT INTERSTATE 70 MILEPOST 114.05. OWNERSHIP--COLORADO DEPARTMENT OF TRANSPORTATION RIGHT-OF-WAY.
TO REACH THE STATION FROM THE WESTERN EXIT OF INTERSTATE 70, EXIT 114, AND THE UNDERPASS OF MEL RAY ROAD, IN GLENWOOD SPRINGS, GO NORTH ON MEL RAY ROAD FOR 0.1 MI (0.16 KM) TO THE INTERSECTION OF OLD U. S. HIGHWAY 6 AND 24. TURN LEFT, WEST, ON OLD U. S. HIGHWAY 6 AND 24 FOR 0.3 MI (0.48 KM) TO THE INTERSECTION OF STORMKING ROAD AND THE STATION ON THE LEFT.
THE MARK IS A STANDARD DISK SET IN A CONCRETE POST 0.6 M (1.97 FT) IN DIAMETER AND 1.5 M (4.92 FT) DEEP, FLUSH WITH THE GROUND. IT IS 38.5 M (126.31 FT) EAST OF INTERSTATE 70 MILEPOST 114, 23.7 M (77.76 FT) WEST OF THE CENTER OF GLENWOOD SPRINGS CITY LIMIT SIGN, 17.4 M (57.09 FT) WEST OF THE EXTENDED CENTERLINE OF STORMKING ROAD, 14.5 M (47.57 FT) NORTH OF THE CENTERLINE OF WEST BOUND INTERSTATE 70, 10.2 M (33.46 FT) SOUTH OF THE CENTERLINE OF OLD U. S. HIGHWAY 6 AND 24, 6.7 M (21.98 FT) NORTH-NORTHEAST OF A LIGHT POLE, 1.4 M (4.59 FT) WEST OF A WITNESS POST, 1.0 M (3.28 FT) EAST OF A WITNESS POST AND ABOUT THE SAME LEVEL AS THE INTERSTATE.
|05/02/1996 by CODOT (GOOD)
|RECOVERY NOTE BY COLORADO DEPARTMENT OF TRANSPORTATION 1996 (RSC)
RECOVERED AS DESCRIBED.
- The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 1996.
- The orthometric height was determined by GPS observations and a high-resolution geoid model.
- The X, Y, and Z were computed from the position and the ellipsoidal ht.
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
- The geoid height was determined by GEOID99.