BARREL SPRINGS EDM Array
Number of Bench marks: 6
Number of Surveys to 1993: 7
Date of Initial Survey: 16 August 1978
Date of Latest Survey: 27 July 1991
Trespass Permission: None required
Directions: Take Pearblossom Highway to Barrel Springs Road. Proceed west 200 meters on Barrel Springs Road, turn right onto 25th Street East, and continue 130 m to the first roadcut. Monument 'A' is on the northwest side, about 12 m west of the top of the roadcut.
Comments: This quadrilateral was es tablished by UCSB in 1978 across the San Andreas fault. Bench marks are Class B rod marks driven to refusal and capped with a stainless steel nipple.Early UCSB surveys measured slope lengths with an HP3808A distance meter, and they are not comparable to t he 1991 horizontal line length surveys with a Wild TC2000 total station distance meter.
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