Geosynthetic Accreditation Institute

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ASTM D5994
Test Method for Measuring the Core Thickness of Textured Geomembranes, (04.08)

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List of Accredited Laboratories:

• Lab. #1 - TRI/Environmental
• Lab. #3 - Golder Associates
• Lab. #4 - Geosynthetic Institute
• Lab. #5 - NTH
• Lab. #13 - Precision Geosynthetic Laboratories, CA
• Lab. #14 - Geotechnics Inc.
• Lab. #18 - Shaw Environmental & Infrastructure, Inc.
• Lab. #20 - GeoTesting Express
• Lab. #26 - Agru America Inc.
• Lab. #29 - FITI
• Lab. #34 - GSE Lining Technology, Inc. (Richey Road Lab)
• Lab. #38 - SAGEOS/CTT Group
• Lab. #42 - NPUST (GSI-Taiwan)
• Lab. #43 - Ardaman & Associates
• Lab. #47 - Precision Geosynthetic Laboratories, TX
• Lab. #49- Engepol Geossinteticos Ltda.
• Lab. #51 - Solmax International Inc.
• Lab. #53 - Industries Polytex Ltda.
• Lab. #55 - Atarfil Geomembranes S.L.

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[Method List]

[Laboratory List]

[GAI page]