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Details for Benchmark: DX4813

N 33° 55.494 W 117° 53.180 (NAD 83)

Altitude: 404.8

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

Location:
In ORANGE county, CA View Original Datasheet
Designation:
3 10 12
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Third time was a charm. No joy the first two times. Had to park across Lambert, on the residential street. Traffic potentially nasty, be careful.

NGS log submitted as follows::

STATION MARK AND REFERENCE MARK 3 RECOVERED IN GOOD CONDITION. REFERENCE MARK 1 AND 2 NOT FOUND.

NEW DIRECTIONS:
TO REACH THE STATION FROM THE INTERSECTION OF STATE COLLEGE 'BOULEVARD AND LAMBERT ROAD, PROCEED WEST ON LAMBERT ROAD 0.2 MILE TO 630 EAST LAMBERT ROAD AND THE WESTERLY ASPHALT EXIT DRIVE OF THE BRISTOL INDUSTRIES FACILITY.

THE STATION IS LOCATED 15 FEET WEST OF THE WEST EDGE OF THE ASPHALT DRIVE AND 28 FEET SOUTH OF THE SOUTH CURB OF LAMBERT ROAD. IT IS APPROXIMATELY 20 FEET NORTH OF A CHAIN LINK FENCE AROUND A PLANT NURSERY.

REFERENCE MARK 3 DIRECTIONS REMAIN VALID, EXCEPT LIGHT POLE 39 IS NOT PRESENT, AND THE EVERGREEN IS NOW APPROXIMATELY 18 INCHES IN DIAMETER. MEASUREMENTS NOT VERIFIED. THE RM IS LOCATED IN A CUT-AROUND IN THE SIDEWALK, JUST SOUTH OF THE SOUTH CURB OF THE STREET.

[Photos:]
photoDX4813 station mark in Brea CA
photoDX4813 RM 3 disc
photoDX4813 surrounding area
photoDX4813 RM 3 area
At the lower right corner of the photo is the edge of the westerly (exit) drive from Bristol Industries.
photoDX4813 Bristol Industries Facility

Documented History (by the NGS)

01/01/1974 by CA-059 (MONUMENTED)
DESCRIBED BY ORANGE COUNTY CALIFORNIA 1974 (JLS) THE STATION IS LOCATED AT MUELLER PARK IN BREA. TO REACH THE STATION FROM THE INTERSECTION OF STATE COLLEGE BOULEVARD AND LAMBERT ROAD, PROCEED WEST 0.2 MILE TO 630 EAST LAMBERT ROAD AND WESTERLY ASPHALT DRIVE OF THE MUELLER COMPANY. STATION IS LOCATED AT THE NORTHEAST CORNER OF A LITTLE LEAGUE BASEBALL FIELD IN MUELLER PARK AND IS SET 15 FEET WEST OF THE WEST EDGE OF THE ASPHALT DRIVE AND 28 FEET SOUTH OF THE SOUTH CURB OF LAMBERT ROAD. MR. LLOYD W. DARNELL, PLANT MANAGER OF THE MUELLER COMPANY CAN BE CONTACTED BY CALLING 714-529-1981. THE STATION MARK IS A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-12 1974. THE SURFACE DISK IS SET IN TOP OF A 12 INCH CONCRETE BLOCK THAT IS FLUSH WITH THE GROUND SURFACE. THE UNDERGROUND MARK IS SET IN THE TOP OF A CONCRETE BLOCK ABOUT 3 FEET BELOW THE GROUND SURFACE. REFERENCE MARK 1, A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-12 1974 RM 1, IS SET IN TOP OF A CONCRETE CYLINDER FLUSH WITH THE GROUND. THE MARK IS 68.9 FEET SOUTH OF THE SOUTH CURB FACE, 68 FEET SSE OF LIGHT POLE 39, AND 9.2 FEET WEST OF A 12 INCH DIAMETER EVERGREEN TREE. REFERENCE MARK 2, A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-12 1974 RM 2, IS SET IN TOP OF A CONCRETE CYLINDER FLUSH WITH THE GROUND. THE MARK IS 46.8 FEET WEST OF THE WEST EDGE OF A CONCRETE DRIVE APPROACH, 22 FEET WEST OF LIGHT POLE 39, AND ONE FOOT SOUTH OF THE SOUTH CURB FACE. REFERENCE MARK 3, A 3-3/4 IN OCS ALUMINUM DISK STAMPED 3-10-12 1974 RM 3, IS SET IN TOP OF A CONCRETE CYLINDER FLUSH WITH THE GROUND. THE MARK IS 23.9 FEET EAST OF LIGHT POLE 39, 16.7 FEET NORTH OF A 10 INCH DIAMETER EVERGREEN TREE. HEIGHT OF LIGHT ABOVE STATION MARK 1.46 METERS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in June 1996. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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