Summit Environmental Contractors

Owner:

Caltrans, District 7

Architect:

General Contractor:

Scope Of Work

Summit provided consulting services, site investigations, and remediation for 20 properties located within a one-mile construction area as part of the construction for the Interstate 5/Carmenita Road Interchange project. The construction included the removal of the existing two-lane grade separation over-crossing at Carmenita Road, realignment of existing frontage roads, and construction of a tight diamond interchange with a new Carmenita Road over-crossing grade separation structure over Interstate 5 and the Union Pacific Railroad crossing. New right-of-way acquisitions of residential and industrial properties, both full and partial-takes, as well as permanent and temporary construction/grading easements were needed to accommodate the project construction.

Services included preparation of a health and safety plan, excavation and transportation plan, lead compliance plan, sampling and analysis plan, and transportation and disposal plan outlining the requirements for the handling of contaminated material. Field work included geotechnical drilling of seventy (70) soil borings to approximately sixty (60) feet below ground surface to determine the location and thickness of the impermeable layer above the Artesia Aquifer and oversight, monitoring, and soil sample collection from over twenty (20) excavations and soil stockpiles. In addition to preparing monthly reports, Summit conducted statistical analysis for the evaluation and recommendations for the perceived options for management of contaminated soil (disposal or reuse on site).