Providing premier environmental and geotechnical solutions since 1988.

Chico Contaminated Groundwater Plume

Butte County

Treadwell & Rollo provided litigation support services in a case regarding the Central and Southwest Plumes, areas of groundwater contaminated with tetrachloroethene and its degradation by-products.  The case involved numerous ...

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Lexington Quarry Hydrogeologic Peer Review

Santa Clara County

Treadwell & Rollo performed a third-party hydrogeologic peer review for Lexington Quarry in connection with a Draft Environmental Impact Report (DEIR) for proposed quarry modification and expansion.  Because several homes ...

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Vintage Estates Water Supply

Alameda County

Treadwell & Rollo’s services for the Vintage Estates development included providing an opinion on whether a single proposed groundwater well would provide sufficient water supply for the proposed housing development.  ...

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