B 135

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

* NAD 83(1992)- 40 42 03.75660(N) 105 33 45.56353(W) ADJUSTED

* NAVD 88 - 2164.568 (meters) 7101.59 (feet) ADJUSTED

X - -1,299,589.924 (meters) COMP
Y - -4,666,348.059 (meters) COMP
Z - 4,138,714.327 (meters) COMP

LAPLACE CORR- -14.30 (seconds) DEFLEC96
ELLIP HEIGHT- 2152.64 (meters) GPS OBS
GEOID HEIGHT- -12.10 (meters) GEOID96
DYNAMIC HT - 2162.484 (meters) 7094.75 (feet) COMP
MODELED GRAV- 979,584.4 (mgal) NAVD 88
HORZ ORDER - FIRST
VERT ORDER - SECOND CLASS 0
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.).

he modeled gravity was interpolated from observed gravity values.

North East Units Scale Converg.

SPC CO N - 1,498,239.86 2,982,627.00 sFT 0.99998768 -0 02 25.7
SPC CO N - 456,664.422 909,106.528 MT 0.99998768 -0 02 25.7
UTM 13 - 4,505,723.120 452,466.444 MT 0.99962781 -0 22 00.9

SUPERSEDED SURVEY CONTROL

NGVD 29 - 2163.386 (meters) 7097.71 (feet) ADJ UNCH

Superseded values are not recommended for survey control.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 See file format.dat to determine how the superseded data were derived.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: 80 = SET IN A BOULDER
STAMPING: B 135 1934
STABILITY: C = May hold, but of type commonly subject to surface motion
SATELLITE: The site location was reported as suitable for satellite observations - February 24, 1997

HISTORY - Date Condition Recov. By

HISTORY - 1934 MONUMENTED CGS

HISTORY - 19970224 GOOD CODOT

Station Description

DESCRIBED BY COAST AND GEODETIC SURVEY 1934 21.5 MI NE FROM CHAMBERS LAKE. 21.5 MILES NORTHEAST OF, ALONG HWY. 14, FROM JCT. OF ROADS ABOUT 1 MILE EAST OF RUSTIC RESORT, DIRECTLY SOUTH AND IMMEDIATELY BELOW HIGHEST POINT OF NORTH CLIFF, 60 FEET NORTH OF ABRUPT BREAK IN FLAT TO A SECONDARY LEVEL, 35 FEET SOUTH OF CENTERLINE OF ROAD, 25 FEET SOUTHEAST OF LARGE BOULDER ON SOUTH BANK OF ROAD, IN THE EXACT APEX OF BOULDER 6 X 6 X 3 FEET, BRONZE TABLET SET HORIZONTALLY.

Station Recovery (1997)

RECOVERY NOTE BY COLORADO DEPARTMENT OF TRANSPORTATION 1997 (RSC) THE STATION IS LOCATED ABOUT 19.5 MI (31.4 KM) WEST-NORTHWEST OF TEDS PLACE, 13 MI (20.9 KM) WEST OF POUDRE PARK AND 1 MI (1.6 KM) EAST OF RUSTIC RESORT, IN THE SOUTHWEST 1/4 OF SECTION 34, T 9 N, R 73 W, AT STATE HIGHWAY 14 MILEPOST 92.2. OWNERSHIP--COLORADO DEPT. OF TRANSPORTATION RIGHT-OF-WAY TO REACH THE STATION FROM THE VILLAGE OF RUSTIC IN THE POUDRE CANYON, GO EAST FROM THE RUSTIC RESORT 1.0 MI (1.6 KM) TO THE STATION ON THE RIGHT BY A BIG PINE TREE THE MARK IS A STANDARD DISK SET IN A DRILL HOLE IN A 3 M (9.8 FT) BY 3 M (9.8 FT) BY 0.5 M (1.6 FT) HIGH GRANITE BOULDER. IT IS 16.5 M (54.1 FT) SOUTH FROM THE CENTER LINE OF THE HIGHWAY, 13.6 M (44.6 FT) EAST-SOUTHEAST FROM A POWER POLE, 10.9 M (35.8 FT) SOUTH-SOUTHEAST FROM A 14-INCH DIAMETER PINE TREE, 1.5 M (4.9 FT) SOUTH FROM A WITNESS POST, 1.35 M (4.43 FT) SOUTH FROM A RIGHT-OF-WAY FENCE AND ABOUT 50 CM BELOW THE HIGHWAY.