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NPDES Permit for Denver Federal Center Building 52A in Colorado

Under National Pollutant Discharge Elimination System permit number CO-0034860, the Federal Highway Administration is authorized to discharge wastewater from its groundwater treatment facility 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 Permit Transfer From GSA to FHWA November 2017 (pdf) (69.56 KB, October 23, 2017)
CO0034860 FHWA Denver Federal Center Building 52A Final Permit (pdf) (223.83 KB, November 1, 2013)
CO0034860 FHWA Denver Federal Center Building 52A Statement of Basis (pdf) (156.83 KB, November 21, 2013)

Draft Permit

The EPA accepted public comments on the draft permit through May 19, 2025.

CO0034860 Building 52A GWTF Draft NPDES Permit (pdf) (611.23 KB, April 17, 2025)
CO0034860 Building 52A GWTF Draft Statement of Basis (pdf) (1.48 MB, April 17, 2025)