Project Name: Casmalia Resources Superfund Site

Location: Casmalia, CA

Job Type: Landfill Services


In its sixteen years of operation from 1973 until 1989, the 252-acre Casmalia Resources Superfund Site operated as a commercial hazardous waste management facility. During that time the facility received over 5.6 billion pounds of waste. The site contains approximately 300 chemicals of concern, including VOCs, SVOCs, and Inorganics impacting site soils, groundwater, surface water, and pond sediments. 

Under active EPA oversight, E&E Construction was contracted to perform all operations in compliance with RCRA and CERCLA regulations, to include: subsurface liquids extraction, non-aqueous phase liquids (NAPL) separation and disposal, liquids treatment, site monitoring, maintenance of roadways, landfill cover systems, site stormwater control systems, and wetlands management.



Oversight  The project presents considerable challenges in regard to oversight and involvement of several concerned agencies and stakeholders. The EPA, The Department of Toxic Substances Control, The Regional Water Quality Control Board, the California Department of Fish and Wildlife Services, and the surrounding community all have particular involvement. E&E works earnestly with the steering committee to ensure every effort is made to achieve comprehensive regulatory compliance and meet the needs of all involved parties.


The Casmalia Resources Superfund Site is situated amongst the scenic foothills of the Central California Coast. Since the closure of the hazardous waste management facility, the surrounding area has experienced great growth and development. The site is surrounded by several farms and ranches, ponds, and vegetation. This rich environment serves as a habitat for several sensitive and protected species including California red-legged frog, California tiger salamander, western spadefoot toad, two-striped garter snake, coast horned lizard, and American badger. E&E takes extraordinary care to protect the surrounding environment, residences, and wildlife from waste contamination.

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