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Details for Benchmark: AE3379

N 40° 11.117 W 083° 16.841 (NAD 83)

Altitude: 978

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

Location:
In UNION county, OH View Original Datasheet
Designation:
14-8
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.

Reference Points

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Recovered in good condition. No witness post but easy to find in well-groomed sod.

[Photos:]
photoAE3379
photoStanding view NW

Documented History (by the NGS)

01/01/1997 by WOOLPT (MONUMENTED)
DESCRIBED BY WOOLPERT CONSULTANTS 1997 (ARJ) 8.9 KM (5.55 MI) NORTH OF PLAIN CITY, 9.7 KM (6.00 MI) SOUTHEAST OF MARYSVILLE. FROM THE INTERCHANGE OF STATE HIGHWAYS 33 AND 42, PROCEED SOUTHWEST ON RT. 42 0.8 KM (0.50 MI) TO THE INTERSECTION OF COUNTY ROAD 1 (INDUSTRIAL PKWY) . TURN NORTHWEST ON CO.RD.1 AND PROCEED 4.8 KM (3.00 MI) TO STATION ON RIGHT. MARKER IS 8.5 M (27.9 FT) NORTHEAST OF THE CENTERLINE OF INDUSTRIAL PKWY., 38.9M SOUTHEAST OF A UTILITY POLE AND 53.2M NORTHWEST OF A UTILITY POLE. THE CONTROL POINT IS FLUSH WITH THE GROUND.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in October 1997.
  • 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.

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