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Details for Benchmark: LO0636

N 40° 46.500 W 111° 54.183 (NAD 83)

Altitude: 4257.78

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

Location:
In SALT LAKE county, UT View Original Datasheet
Designation:
B 175
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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The heating plant for West High his been removed and the area is now part of the track and football field.

Documented History (by the NGS)

01/01/1970 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1970 IN SALT LAKE CITY. AT THE SOUTHEAST CORNER OF THE INTERSECTION OF THIRD WEST STREET AND SECOND NORTH STREET, SET VERTICALLY IN THE WEST FACE OF THE CONCRETE FOUNDATION OF THE HEATING PLANT FOR WEST HIGH SCHOOL, 76 FEET SOUTH OF THE CENTER LINE OF SECOND NORTH STREET, 88 FEET EAST OF THE CENTER LINE OF THIRD WEST STREET, 0.9 FOOT SOUTH OF THE NORTHWEST CORNER OF THE BUILDING AND 0.7 FOOT ABOVE THE GROUND. SECTION 36, T 1 W, R 1 N.
07/29/1995 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1995 (ALG) THE STREETS IN SALT LAKE CITY HAVE BEEN RENAMED. THE STATION IS NOW LOCATED AT THE INTERSECTION OF 400 WEST AND 300 NORTH INSTEAD OF 3RD WEST AND 2ND NORTH. DISTANCES AND DIRECTION ARE CORRECT AS DESCRIBED.
09/16/1997 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1997 (GAS) IN SALT LAKE CITY, AT THE INTERSECTION OF 400 WEST AND 300 NORTH STREETS, SET VERTICALLY IN THE WEST FACE OF THE HEATING PLANT FOR WEST HIGH SCHOOL, 19.9 M (65.3 FT) EAST OF THE CENTERLINE OF THE NORTHBOUND LANES OF WEST STREET, 10.9 M (35.8 FT) SOUTH OF THE CENTERLINE OF NORTH STREET, 7.0 M (23.0 FT) EAST OF A SIGNAL LIGHT POLE, 3.1 M (10.2 FT) SOUTH OF A UTILITY POLE WITH 5 GUY CABLES, 0.5 M (1.6 FT) ABOVE THE LEVEL OF WEST STREET, AND 0.2 M (0.7 FT) SOUTH OF THE NORTHWEST CORNER OF THE BUILDING.

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 September 1995.
  • 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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