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Associated Earth Sciences, Inc. (AESI) is a multi-disciplinary, professional consulting firm that has provided integrated geotechnical engineering, geophysical, and hydrogeological services in the Pacific Northwest since 1981 to clients in both the private and public sectors. AESI’s staff of approximately 70 includes geotechnical engineers, licensed geologists, hydrogeologists, and geophysicists.

AESI provides services in the following areas:

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