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Details for Benchmark: AA6383

N 39° 23.473 W 084° 42.290 (NAD 83)

Altitude: 797

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

Location:
In BUTLER county, OH View Original Datasheet
Designation:
1004
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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Found this one after Fenshark logged it, and I realized that it's in the parking lot of the home office of my employer. I've driven by it hundreds of times and never knew it was there. My first benchmark.

[Photos:]
photoMy first benchmark.
N 39° 23.475 W 084° 42.290

This was my first benchmark, pretty easy to find, right in a parking lot so getting there was not a problem.

[Photos:]
photobmark.jpg

Documented History (by the NGS)

01/01/1990 by WOOLPT (MONUMENTED)
DESCRIBED BY WOOLPERT CONSULTANTS 1990 (TW) STATION 1004 IS LOCATED +/-300'' WEST OF THE "T" INTERSECTION OF S.R. 129 AND MORGAN-ROSS ROAD ON THE NORTH SIDE OF SAID S.R. 129. THE STATION IS FURTHER DESCRIBED AS BEING 13.55'' NORTHWEST OF A CONCRETE REFERENCE MONUMENT THAT IS STAMPED RM 1, 10.85'' NORTHEAST OF A CONCRETE REFERENCE MONUMENT THAT IS STAMPED RM 2 AND 57.10'' NORTH OF AN IRON PIN THAT IS STAMPED RM 3. STATION 1004 IS A BRASS DISK SET IN CONCRETE AND IS STAMPED 1004 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.

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