Valley View Interchange – La Mirada, CA


Summit provided both in charge environmental consulting and contracting services for the 200 million dollar Valley View interchange construction project for the California Department of Transportation (Caltrans). The construction job consisted of the widening of both the Valley View overcrossing and the I-5 freeway. As part of the construction, thirteen industrial properties and several government owned parcels previously determined to be contaminated required to be excavated, stockpiled, sampled, characterized and transported for proper disposal.

Summits scope of services included the completion of the following plans: Site-Specific Health and Safety Plan, Sampling and Analysis Plan, Excavation Plan, Transportation Plan, and a Stockpile Management Plan. The field services provided included the sampling and analytical testing for 1200 stockpiles and 6000 samples and the characterization transportation and disposal for more than 42,000 tons of contaminated material. In addition, Summit performed dewatering, sampling, and liquid disposal for more than 400,000 gallons of contaminated liquid.

Summit received high marks for safety, communication, efficiency and overall performance.