Under National Pollutant Discharge Elimination System permit number CO-0034665, Four Corners Materials is authorized to discharge from the Bayfield Pit and Plant in La Plata County, Colorado, to the Los Pinos River.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- CO-0034665 Four Corners Materials Permit (PDF)(20 pp, 138 K)
- CO-0034665 Four Corners Materials Statement of Basis (PDF)(8 pp, 64 K)