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NPDES Permit for Building 52A Groundwater Treatment Plant in Colorado

Under National Pollutant Discharge Elimination System permit number CO-0034860, the Federal Highway Administration is authorized to discharge wastewater from its Building 52A Ground Water Treatment Plant located at the Denver Federal Center in Lakewood, Jefferson County, Colorado, to McIntyre Gulch, tributary to Lakewood Gulch, tributary to the South Platte River.

Current Permit

CO0034860 Building 52A Groundwater Treatment Plant NPDES Permit (pdf) (515.39 KB, October 20, 2025)
The NPDES discharge permit.
CO0034860 Building 52A Groundwater Treatment Plant Statement of Basis (pdf) (1.27 MB, October 20, 2025)
The statement of basis for the NPDES discharge permit.