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Details for Benchmark: EZ1896

N 35° 44.367 W 078° 50.917 (NAD 83)

Altitude: 498.07

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

Location:
In WAKE county, NC View Original Datasheet
Designation:
E 218
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Most reliable and expected to hold position/elevation well.

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Recovered in good condition. The access cover is approx. 1/4 inches below the ground surface.

[Photos:]
photoE 218 knob - reference point
photoE 218 with access cover closed
photoE 218 close-up of stamping
photoE 218 area with witness post, facing NW

Found this rod in good condition just off N. Salem Street.

[Photos:]
photoRod-EZ1896

Recovered in good condition - see attached pictures.

[Photos:]
photocloseup of stamping
recovered in good condition
photocloseup of marker
recovered in good condition
photolocation to NE
marker indicated by red box

Found as described, in front of Guy C Lee Building Supply Company.

[Photos:]
photoEZ-1896. Apex, North Carolina.
Metal Rod is below this access cover.
photoEZ-1896 Area. Apex, North Carolina.
This view shows the witness post and the alum. ref tag on a nearby power pole.

Documented History (by the NGS)

01/01/1980 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1980 0.6 MI NORTH FROM APEX. 1.0 MILE NORTHEAST ALONG SR 1011-SALEM STREET-FROM INTERSECTION WITH N.C. 55 (WILLIAMS STREET), IN APEX, ON EAST SIDE OF ROAD, ACROSS FROM APEX CITY LIMIT SIGN AND 0.75 MILE SOUTHEAST OF U.S. 64 OVERPASS, 25.3 FEET EAST OF CENTERLINE OF ROAD, 1.9 FEET EAST OF POWER POLE WITH REFERENCE TAG, 32.7 FEET WEST OF WEST RAIL OF RAILROAD TRACKS, 69.6 FEET NORTHEAST OF FIRE HYDRANT AND 38.4 FEET SOUTH OF POWER POLE WITH REFERENCE TAG. THE DATUM POINT IS A STEEL KNOB ON TOP OF A ROD 4 INCHES BELOW A STANDARD NATIONAL GEODETIC SURVEY LOGO FLANGE WITH ACCESS COVER. THE MARK IS 1 FT N FROM A WITNESS POST. THE MARK IS 1 FT BELOW ROAD.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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