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Details for Benchmark: AA6387

N 39° 21.310 W 084° 35.559 (NAD 83)

Altitude: 567

Coordinates may not be exact. Altitude is GPS OBS and location is ADJUSTED. (more info)

Location:
In BUTLER county, OH View Original Datasheet
Designation:
1006
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Documented History (by the NGS)

01/01/1990 by WOOLPT (MONUMENTED)
DESCRIBED BY WOOLPERT CONSULTANTS 1990 (TW) STATION 1006 IS LOCATED ON THE SOUTH SIDE OF HIGHWAY 128 OPPOSITE THE LIBERTY HOME ASSOCIATIONS EDELWEISS SPORTS CLUB'' TO THE NORTH AND A STORAGE FACILITY TO THE SOUTH. THE STATION IS FURTHER DESCRIBED AS BEING 24.38'' NORTHWEST OF A CONCRETE REFERENCE MONUMENT THAT IS STAMPED RM 1, 20.44'' NORTHEAST OF A CONCRETE REFERENCE MONUMENT THAT IS STAMPED RM 2 AND 13.93'' NORTH OF AN IRON PIN THAT IS STAMPED RM 3. STATION 1006 IS A BRASS DISK SET IN CONCRETE AND IS STAMPED 1006 SET 1990.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in April 1998.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.