2015-03-16_REVISION - P2014009 - Laserfiche WebLink

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Facility Located at: CR 1c Leadville Lake County, C080461 I Center Point Latitude 39.23339 Longitude - 106.23470 All discharges must comply with the lawful requirements of federal agencies municipalities, counties, drainage districts and other local agencies regarding any discharges to storm drain systems, conveyances, or other water courses under their jurisdiction. Monitoring Requirements 1. Benchmark monitoring for Discharges from Waste Rock and Overburden Piles Parameter CERTIFICATION TO DISCHARGE UNDER CDPS GENERAL PERMIT COR040000 pF'CO STORMWATER ASSOCIATED WITH Sample Type METAL MINING OPERATIONS AND MINE -WASTE REMEDIATION mg/L Certification Number: COR040282 1876 " This Certification to Discharge specifically authorizes: Colorado Department New West Reclamation LLC of public Health to discharge stormwater from the facility identified as and Envimnmenr Garibaldi Waste Dump NTU to:California Gulch - Arkansas River Facility Located at: CR 1c Leadville Lake County, C080461 I Center Point Latitude 39.23339 Longitude - 106.23470 All discharges must comply with the lawful requirements of federal agencies municipalities, counties, drainage districts and other local agencies regarding any discharges to storm drain systems, conveyances, or other water courses under their jurisdiction. Monitoring Requirements 1. Benchmark monitoring for Discharges from Waste Rock and Overburden Piles Parameter Units Benchmark Values Rationale Monit °rang Frequency Sample Type Total Suspended Solids (TSS) mg/L 100 EPA Quarterly Grab Benchmarks Turbidity NTU 50 Quarterly Grab Ben hmarks pH S.U. EPA 6.0-9.0 Benchmarks Quarterly Grab Total Antimony mg/L 0.64 EPA Quarterly Grab Benchmarks Total Arsenic mg /L 0.15 EPA Benchmarks Quarterly Grab Total Beryllium mg/L 0.13 EPA Quarterly Grab Benchmarks Total Cadmium mg/L 0.0018 EPA Quarterly Grab Benchmarks Total Copper mg/L 0.0123 Quarterly Grab Benchmarks Total Iron mg/L 1.0 EPA Quarterly Grab Benchmarks Total Lead mg /L 0.069 EPA Quarterly Grab Benchmarks Total Mercury mg/L 0.0014 EPA Benchmarks Quarterly Grab Total Nickel mg/L 0.42 Quarterly Grab Ben hmarks Total Selenium mg /L 0.005 Quarterly Grab Ben hmarks Total Silver mg/L 0.0030 I EPA Benchmarks Quarterly Grab Total Zinc mg/L 0.11 ! Quarterly Grab Benchmarks Additional Monitoring Requirements On the effective date of this certification, the Garibaldi Waste Dump facility is subject to the monitoring requirements discussed below at each discharge point of stormwater from the facility. Monitoring frequency: The permittee must collect samples of stormwater discharge from the facility once per quarter unless otherwise directed by the Division.