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COLORADO LEGACY LAND <br /> $CHWARTZWALDER MINE <br /> E.6.2 Colorado Discharge Permit#CO-0001244, Monthly Discharge Report <br /> Discharge Permit #CO-0001244 was issued in 1981 by the Colorado Department of Public Health and <br /> Environment(CDPHE),Water Quality Control Division(WQCD)for the Schwartzwalder water treatment plant. <br /> The water treatment plant uses reverse osmosis as ion exchanges technologies to treat mine water and remove <br /> uranium and radium prior to discharge into Ralston Creek. Water quality samples are collected from the <br /> effluent or discharge of the water treatment plant (Sample Location ID: DIS-001A) in accordance with <br /> Discharge Permit #CO-0001244. The discharge sample port is a spigot within the water treatment plant <br /> building. Table E-4 summarizes the discharge permit analytical suite,effluent limits,and collection frequency. <br /> These data are submitted to the CDPHE WQCD on a monthly basis and published on the CDPHE website as part <br /> of the public record: https://environmentalrecords.colorado.gov/HPRMWebDrawer/search. <br /> E.6.3 Colorado Discharge Permit#CO-0001244,Compliance Order on Consent, <br /> Number IC-150123-1 <br /> On June 1, 2010 2010 CDPHE issued a Notice of Violation/Cease and Desist Order (NOV/COD), Number 10- <br /> 100601-1 to the former site owner Cotter Corporation. The NOV/COD was amended three times:July 12,2010, <br /> August 27,2010,and September 27,2010. <br /> On January 26, 2015,the CDPHE issued Compliance Order on Consent,Number IC-150123-1 to Cotter to resolve <br /> the NOV/COD. The Compliance Order on Consent stipulates: <br /> 1. Monthly water quality monitoring of Ralston Creek,when water is flowing,at the downstream(Sample <br /> Location ID: SW-BPL, shown on Figure E-2) and upstream (Sample Location ID: SW-AWD, shown on <br /> Figure E-2) sample locations, <br /> 2. Monthly reporting of these sample results to CDPHE within 7-calendar days of receipt,and <br /> 3. Continued operation of the alluvial groundwater capture/and or treatment system at Schwartzwalder <br /> (i.e.continued operations of the sumps). Although the Compliance Order on Consent was issued when <br /> Cotter was the site owner,the stipulations apply to Colorado Legacy Land,LLC. <br /> On April 13,2017, CDPHE issued Amendment Number One, Compliance Order on Consent,Number IC-15-123-1 <br /> to temporarily set the total recoverable arsenic 30-day average limit in the discharge permit from 0.02µg/L to <br /> "report".This amendment expires on December 31,2021 or on the effective date of renewal and reissuance of <br /> the discharge permit. <br /> Although the Compliance Order on Consent,Number IC-150123-1 was issued when Cotter Corporation was the <br /> site owner,the stipulations apply to Colorado Legacy Land,LLC. Table E-5 summarizes the Compliance Order <br /> on Consent analytical suite. These data are submitted to the CDPHE WQCD on a monthly basis. <br /> AUGUST 2020 27 AMENDMENTS <br />