Tar Lake Superfund (SF) Mancelona Township (RFQ )

Provide Tar Lake Superfund (SF). Provide construction services for environmental remedial excavation, biosparge system installation, and environmental remedial monitoring. The work includes developing an EPA-approved Quality Assurance Project Plan, mobilizing to the project site, excavating approximately 215,000 tons of contaminated soil with temporary shoring, backfilling with clean imported soils, installing 28 new biosparge wells, and an approximately 160 square foot pre-engineered structure to house the compressors. Ancillary activities include abandoning existing groundwater monitoring wells, installing new groundwater monitoring wells, installing erosion control measures, conducting a utility survey to locate existing biosparge system piping, confirmation soil sampling, and site restoration.