Details for Benchmark: HV8759
N 38° 46.232 W 077° 24.431 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In FAIRFAX county, VA View Original Datasheet
- YATES AZ MK
- Marker Type:
- NGS Benchmark
- setting not listed - see description
- Mark of questionable or unknown stability.
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Documented History (by the NGS)
|Unknown by (MONUMENTED)
|01/01/1975 by VA-059 (GOOD)
|DESCRIBED BY FAIRFAX COUNTY VIRGINIA 1975 (EYB)
THE AZ MK AND PRIMARY STATION WERE FOUND IN GOOD CONDITION. SEE FAIRFAX COUNTY TAX MAP 85-1, REVISED TO 1-1-76.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in November 1994.
- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The geoid height was determined by GEOID99.