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Leak Location Services, Inc. LLSI offers the very best geoelectric leak location, detection and surveys related services with ASTM D7007, ASTM D7002, ASTM D6747, ASTM D7240, ASTM D7953, liner integrity, liner survey, leak location liner, spark test, arc test, etc. with highly experienced and trained staff. 

https://www.llsi.com/compare-survey-types/

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answered by (316 points) 2 9
Geomembrane leak location surveys of surface impoundments and tanks can be conducted with water covering the geomembranes. Surveys are conducted using a probe while wading or standing on the side slopes or using a sensor that towed across the impoundment. Procedures for this method are specified in ASTM standard D7007.
Shallow Water Survey and Deep Water Surveys are included in these location surveys.

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