Projects

 

VESTRA staff have served as the engineering consultant for the County of Plumas for over 9 years. The Gopher Hill Landfill is a 13-acre, unlined Class III landfill that received waste from the City of Quincy and unincorporated areas of western Plumas County. The landfill is located on public lands administered by the United States Forest Service (USFS).  Because of our successful work with Plumas County, knowledge of state landfill regulations, and relationship with the RWQCB, VESTRA was also requested by the USFS to prepare the technical engineering and National Environmental Policy Act (NEPA) analysis for permitting and closure activities.  VESTRA completed the design of a 60-mil HDPE cap that followed the prescriptive standards of Title 27.  The site was closed due to the verified release of contaminates to groundwater.  The landfill had been constructed over the historic Gopher Hill Mine, which included hard rock hydraulic mining operations from the early 1900s, mine tailings waste rock, and cultural areas of significance. Drainage and topography at the landfill site were extensively altered. VESTRA has completed numerous investigations, permitting, and design activities at the site including NPDES permitting, quarterly and regulatory compliance monitoring, preparation of Final Closure and Post-Closure Maintenance Plans, preparation of final construction plan and specifications, construction management plans, and State Historic Preservation Office evaluation and documentation.  As-built plans were provided after completion of construction.