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Details for Benchmark: EE2352

N 34° 01.201 W 084° 29.287 (NAD 83)

Altitude: 1107

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

Location:
In COBB county, GA View Original Datasheet
Designation:
7120 24
Marker Type:
survey disk
Setting:
retaining walls, concrete ledge, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Found it really easily..

quick find, still painted white.

Recovered in good condition!

This entry was edited by foxtrot_xray on Saturday, 02 October 2010 at 18:37:44.

[Photos:]
photoThe Disk

6th of my bench mark hunt today on a snow day in ga

#122 L! B, Des 7120-24, Cobb Co DOT, ENG DIVISION, as described, good coords, easy find.

Found in good condition. Mark has been painted over in white, stamping still legible.
Recovery submitted to NGS.

Found as described and in good condition. Still painted white.

[Photos:]
photoEE2352 Designation: 7242 24

Yeah, found it no problem. Cordinates right on. Took picture.

[Photos:]
photoPO Benchmark

Found quickly, only one I could get to today.

Disk is painted over white like the wall. Didn't hav camera but will try again next week when the weather is clear.

7120 24

[Photos:]
photo7120 24
7120 24 brass disk in retaining wall

Documented History (by the NGS)

01/01/1991 by AME (MONUMENTED)
DESCRIBED BY AERO-METRIC ENGINEERING INCORPORATED 1991 THE STATION IS LOCATED IN SANDY PLAINS, 3.50 MI (5.63 KM) NORTHEAST OF MARIETTA, 5.00 MI (8.05 KM) WEST OF ROSWELL, IN THE BACK PARKING LOT, EAST SIDE OF THE SANDY PLAINS UNITED STATES POST OFFICE. OWNERSHIP--SANDY PLAINS UNITED STATES POST OFFICE. $ THE SANDY PLAINS UNITED STATES POST OFFICE IS ON THE SOUTH SIDE OF SANDY PLAINS ROAD, 0.55 MI (0.89 KM) NORTHEAST OF EAST PIEDMONT ROAD. $ THE STATION IS A 3 INCH BRASS CAP SET IN A DRILL HOLE, STAMPED --COBB CO DOT, 7120-24, ENG DIVISION--. IT IS ON TOP AT THE SOUTHWEST CORNER OF THE SOUTH END OF A RETAINING WALL WITH HANDRAIL, AT THE EAST SIDE OF PARKING LOT, NORTHEAST OF A GAS HUT.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in September 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.

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