Project Description

The Thousand Oaks Interceptor Project involves the geotechnical investigation of about 7,700 feet of 21-inch minimum diameter sanitary sewer tunnel, of which 3,000 feet will be performed by microtunneling or small-diameter tunnel boring machine. The tunnel will be excavated in heavily faulted, cavernous limestone that is located in a recharge zone for a major regional aquifer.

Scope of Services

LACHEL & Associates, Inc. was responsible for specifying and directing the exploratory geotechnical investigation. This included the coordination of the soil boring locations, methodology, and review of laboratory analysis of the geotechnical samples to recommend construction methods and costs.

Client

U.S. Department of Energy (University Research Associates)