2012-03-31

GT2099 - PRATTON

Published Details for Benchmark: GT2099
N 36° 44.769
W 119° 52.827 (NAD 83)
Altitude: 267.5

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED.
Location: In FRESNO county, CA View Original Datasheet
Designation: PRATTON
Marker Type: survey disk
Setting: set into the top of a round concrete monument
Stability:
Reference Points: GT2111

Documented History (by the NGS)
01/01/1972 by CADH (MONUMENTED)
DESCRIBED BY CA DIV OF HIGHWAYS 1972 (HF) PRATTON (CDH) IS LOCATED IN THE VICINITY OF BELMONT AVE. AND CORNELIA AVE. 5 MILES WEST OF DOWNTOWN FRESNO. TO REACH FROM FRESNO, FROM INTERSECTION STATE HIGHWAY 99 AND BELMONT AVE. GO WEST ON BELMONT 3.0 MILES TO CORNELIA AVE., TURN LEFT, SOUTH, ON CORNELIA AND GO 0.3 MILE TO STATION ON RIGHT. TO REACH AZIMUTH MARK FROM STATION, GO NORTH 0.3 TO BELMONT AVE. AND AZIMUTH MARK IN NE CORNER INTERSECTION CORNELIA AVE. AND BELMONT AVE. STATION-- STAMPED PRATTON 1972. A CALIFORNIA DIVISION OF HIGHWAYS BRASS TABLET SET IN A 14 IN DIAMETER CONCRETE POST PROJECTING 3 IN. SUB-SURFACE MARK IS A TABLET STAMPED AS ABOVE AND IS SET IN CONCRETE DOWN 4.0 FEET. 23.5 FEET WEST OF CENTER OF CORNELIA AVE. 32.0 FEET SOUTH OF CENTER OF A RAILROAD 7.5 FEET SW OF A TELEPHONE POLE 4.5 FEET EAST OF A STEEL WITNESS POST AZIMUTH-- STAMPED PRATTON 1972 AZIMUTH MARK. A CALIFORNIA DIVISION OF HIGHWAYS BRASS TABLET SET ON A 12 IN DIAMETER CONCRETE POST PROJECTING 3 IN. 28.5 FT NORTH OF CENTER OF BELMONT AVE. 21.5 FT EAST OF CENTER OF CORNELIA AVE. 7.0 FT WNW OF CONCRETE GAS LINE MARKER 2.5 FT EAST OF A POWER POLE R.M. 1-- STAMPED PRATTON NO. 1 1972. A CALIFORNIA DIVISION OF HIGHWAYS BRASS TABLET SET IN A 12 IN DIAMETER CONCRETE POST PROJECTING 4 IN. 19.5 FEET WEST OF CENTER OF CORNELIA AVE. 14.0 FEET NORTH OF CENTER OF A RAILROAD 3.5 FEET WSW OF A RAILROAD CROSS BUCK 43.0 FEET ESE OF A TELEGRAPH POLE R.M. 2-- STAMPED PRATTON NO. 2 1972. A CALIFORNIA DIVISION OF HIGHWAYS BRASS TABLET SET IN A CONCRETE POST 12 IN IN DIAMETER PROJECTING 3 IN. 18.5 FEET EAST OF CENTER OF CORNELIA AVE. 19.0 FEET SOUTH OF CENTER OF A RAILROAD 4.0 FEET SSE OF A RAILROAD CROSS BUCK 31.0 FEET NORTH OF A POWER POLE.

Found Details for Benchmark: GT2099
N 36° 44.769
W 119° 52.826 (WGS 84)
Altitude: 257

Found California Division of Highways (CDOH) Triangulation Station stamped 'PRATTON - 1972' at 12:40, 31 March 2012 as described and in fair condition. Go to description is adequate. The station setting seems stable, but it is set at the edge of an Almond orchard, between the the rows of trees. Its location subjects it to abuse by farm equipment. The station is readable, but the described 14 inch concrete post, now about 1 inch below grade, is chipped and scarred. The described steel witness post is missing.

Reference Monument No. 1 was found in good condition, about 42.5 feet North of, and across the railroad tracks from the Station, immediately southwest of the base of the railroad crossing signal (buck).

Reference Monument No. 2 was found in good condition, about 39.7 feet Northeast of, and across the road from the Station, immediately south of the base of the railroad crossing signal (buck). Recent utility company markings identify an 8 inch gas line adjacent to, or possibly under the Reference Monument.

The Azimuth Mark, GT2111, "PRATTON AZ MK" was searched for, but not located. It is believed to have been destroyed due to road widening. There is a Department of the Interior Geological Survey mark set in a canal headwall structure near the location for the azimuth mark. It is NOT the azimuth mark.

Published NAD83 coordinates are located about 5 feet west of the found WGS84 coordinates. WGS84 coordinates for the mark found by 4 minute occupation with 7 strong satellites and 2 WAAS satellites.

GT2099 "PRATTON 1972" - Triangulation Station detail.
GT2099 "PRATTON 1972" - Triangulation Station and GPSr. The concrete post setting is damaged, but the mark is still readable.
GT2099 "PRATTON 1972" - Triangulation Station setting. View north along Cornelia Avenue, toward Reference Monument No. 1.
GT2099 "PRATTON 1972" - Triangulation Station setting. View east across Cornelia Avenue, toward Reference Monument No. 2.
GT2099 "PRATTON 1972" - Triangulation Station setting. View south along Cornelia Avenue.
GT2099 "PRATTON 1972" - Triangulation Station setting. View west into the Almond orchard. The mark is set between the rows and the concrete post setting bears the evidence of many strikes by farm equipment.
GT2099 "PRATTON 1972" - Triangulation Station coordinates.
GT2099 "PRATTON 1972" - Reference Mark No. 1 detail.
GT2099 "PRATTON 1972" - Reference Mark No. 1 set in a concrete post at the base of the railroad warning signal. View east across Cornelia Avenue.
GT2099 "PRATTON 1972" - Reference Mark No. 1 set in a concrete post at the base of the railroad warning signal. View north along Cornelia Avenue.
GT2099 "PRATTON 1972" - Reference Mark No. 1 set in a concrete post at the base of the railroad warning signal. View east across Cornelia Avenue. Reference Monument No. 2 is set across the road at the base of the other railroad warning signal.
GT2099 "PRATTON 1972" - Reference Mark No. 1 set in a concrete post at the base of the railroad warning signal. View south along Cornelia Avenue toward station "PRATTON".
GT2099 "PRATTON 1972" - Reference Mark No. 1 set in a concrete post at the base of the railroad warning signal. View west along the railroad tracks.
GT2099 "PRATTON 1972" - Reference Mark No. 1 coordinates.
GT2099 "PRATTON 1972" - Reference Mark No. 2 detail.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View northerly along Cornelia Avenue.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View northwestererly toward Reference Monument No. 1.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View north along Cornelia Avenue.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View east along the railroad tracks.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View southeasterly along Cornelia Avenue.
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View west across Cornelia Avenue toward station "PRATTON".
GT2099 "PRATTON 1972" - Reference Mark No. 2 set in a concrete post at the base of the railroad warning signal. View west across Cornelia Avenue, with station "PRATTON" on the left and Reference Monument No. 1 on the right.
GT2099 "PRATTON 1972" - Reference Mark No. 2 coordinates.

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