Under National Pollutant Discharge Elimination System permit number CO-0034860, the General Services Administration is authorized to discharge wastewater from its treatment facility at the Denver Federal Center Building 52A in Lakewood, Jefferson County, Colorado, to the storm drain system entering McIntyre Gulch, tributary to Lakewood Gulch, tributary to the South Platte River.

• CO0034860 General Services Administration Denver Federal Center Building 52A Final Permit (PDF)(15 pp, 229 K, November 1, 2013)
• CO0034860 General Services Administration Denver Federal Center Building 52A Statement of Basis (PDF)(9 pp, 161 K, November 21, 2013)