B 357

*CURRENT SURVEY CONTROL (Retrieval Date = May 1, 1998)

* NAD 83(1992)- 40 40 07.24660(N) 105 04 09.71538(W) ADJUSTED

* NAVD 88 - 1583.239 (meters) 5194.34 (feet) ADJUSTED

X - -1,259,861.019 (meters) COMP
Y - -4,679,198.402 (meters) COMP
Z - 4,135,606.785 (meters) COMP

LAPLACE CORR- -13.37 (seconds) DEFLEC96
ELLIP HEIGHT- 1567.52 (meters) GPS OBS
GEOID HEIGHT- -15.71 (meters) GEOID96
DYNAMIC HT - 1581.920 (meters) 5190.02 (feet) COMP
MODELED GRAV- 979,735.7 (mgal) NAVD 88
HORZ ORDER - FIRST
VERT ORDER - FIRST CLASS II
ELLP ORDER - FOURTH CLASS I

The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 1998.

The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.

The X, Y, and Z were computed from the position and the ellipsoidal ht.

The Laplace correction was computed from DEFLEC96 derived deflections.

The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.

The geoid height was determined by GEOID96.

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.

North East Units Scale Converg.

SPC CO N - 1,486,732.84 3,119,460.38 sFT 0.99998341 +0 16 41.7
SPC CO N - 453,157.077 950,813.426 MT 0.99998341 +0 16 41.7
UTM 13 - 4,501,980.728 494,137.150 MT 0.99960042 -0 02 42.7

SUPERSEDED SURVEY CONTROL

NGVD 29 - 1582.376 (meters) 5191.51 (feet) ADJUSTED

Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file format.dat to determine how the superseded data were derived.

MARKER: DB = BENCH MARK DISK
SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT (ROUND)
STAMPING: B 357 1954
PROJECTION: FLUSH
STABILITY: C = May hold, but of type commonly subject to surface motion
SATELLITE: The site location was reported as suitable for satellite observations - February 25, 1997

HISTORY - Date Condition Recov. By

HISTORY - 1954 MONUMENTED CGS

HISTORY - 1984 GOOD NGS

HISTORY - 1984 GOOD NGS

HISTORY - 19970225 GOOD CODOT

Station Description

DESCRIBED BY COAST AND GEODETIC SURVEY 1954 4.6 MI S FROM WAVERLY. 4.6 MILES SOUTH ALONG STATE HIGHWAY 253 FROM THE WAVERLY SCHOOL AT WAVERLY, 255 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 156 FEET EAST OF THE SOUTHEAST CORNER OF A WHITE HOUSE, 125 FEET EAST OF THE CENTER LINE OF A PRIVATE DRIVEWAY LEADING NORTH, 31 FEET NORTH OF THE CENTER LINE OF AND EAST AND WEST ROAD, 6 FEET WEST OF A TELEPHONE POLE, 2 FEET SOUTH OF A FENCE, 2 FEET EAST OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.2 FOOT ABOVE THE GROUND.

Station Recovery (1984)

RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 RECOVERED IN GOOD CONDITION. A NEW DESCRIPTION FOLLOWS. 5.8 KM (3.6 MI) WEST ALONG COUNTY ROAD 64 FROM ITS JUNCTION WITH NORTH SIXTH STREET IN WELLINGTON, THENCE 4.7 KM (2.9 MI) SOUTH ALONG COUNTY ROAD 15 OR 2.6 KM (1.6 MI) NORTH ALONG U.S. HIGHWAY 287 FROM ITS JUNCTION WITH STATE HIGHWAY 14 IN FORT COLLINS, THENCE 6.2 KM (3.85 MI) NORTHERLY ALONG STATE HIGHWAY 1, 77.7 METERS (254.9 FT) EAST OF THE CENTERLINE OF THE ROAD, 38.2 METERS (125.3 FT) EAST OF THE CENTER OF A DRIVEWAY LEADING NORTH, 9.5 METERS (31.2 FT) NORTH OF THE CENTERLINE OF COUNTY ROAD 56, 1.9 METERS (6.2 FT) WEST OF A UTILITY POLE, AND 0.6 METER (2.0 FT) SOUTH OF A FENCE. THE MARK IS 0.6 METERS E FROM A WITNESS POST. THE MARK IS 0.3 M ABOVE THE ROAD.

Station Recovery (1984)

RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 CHANGES DESC: THE WIHTE HOUSE IS NOW BROWN. IT IS LOCATED AT THE NORTHEAST CORNER OF THE INTERSECTION OF COUNTY ROADS 15 NORTH AND 58 EAST AT THE HOUSE ON 5720 58 E.

Station Recovery (1997)

RECOVERY NOTE BY COLORADO DEPARTMENT OF TRANSPORTATION 1997 (RSC) THE STATION IS LOCATED ABOUT 6 MI (9.7 KM) EAST OF TEDS PLACE, 5.5 MI (8.9 KM) NORTH OF FORT COLLINS AND 4.5 MI (7.2 KM) SOUTHWEST OF WELLINGTON, IN THE SOUTHWEST 1/4 OF SECTION 12, T 8 N, R 69 W. OWNERSHIP--COUNTY ROAD RIGHT-OF-WAY TO REACH THE STATION FROM THE INTERSECTION OF U. S. HIGHWAY 287 AND STATE HIGHWAY 1, ABOUT 2 MI (3.2 KM) NORTH OF FORT COLLINS, GO NORTHEAST THAN NORTH ON STATE HIGHWAY 1 FOR 3.8 MI (6.1 KM) TO A Y-INTERSECTION. TAKE LEFT FORK, NORTH, LARIMER COUNTY ROAD 15, FOR 0.15 MI (0.24 KM) TO THE STATION ON THE RIGHT AT THE INTERSECTION OF LARIMER COUNTY ROAD 58 THE MARK IS A STANDARD DISK SET IN THE TOP OF A 27 CM ROUND CONCRETE POST, FLUSH WITH THE GROUND. IT IS 78.0 M (255.9 FT) EAST FROM THE CENTER LINE OF LARIMER COUNTY ROAD 15, 9.0 M (29.5 FT) NORTH FROM THE CENTER LINE OF LARIMER COUNTY ROAD 58, 2.0 M (6.6 FT) WEST FROM A TELEPHONE POLE NUMBER 2, 0.5 M (1.6 FT) SOUTH FROM A RIGHT-OF-WAY FENCE, 0.45 M (1.48 FT) EAST FROM A WITNESS POST AND ABOUT 30 CM ABOVE LARIMER COUNTY ROAD 58.