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The surface water control and containment facilities are described in the Mining Plan in Exhibit C, and <br /> shown on an Exhibit E map. Briefly,they consist of adequate roadway drainage ditches and culverts, <br /> earthen berms above outslopes, compacted earthen operations pad area, and earthen detention <br /> impoundments of sufficient capacity for runoff and sediment control. These structures already largely <br /> exist on the affected area, and there are no engineered specifications for them. <br /> (b) <br /> The operator worked with WQCD to incorporate Stormwater Management conditions into the CDPS <br /> Permit, and so all stormwater is either contained on-site, or is discharged to the sediment control pond <br /> and Outfall 001 through CDPS Permit No.C00038334. <br /> (11) <br /> Surface water quality data for this site in this segment of South Mosquito Creek has been collected to <br /> verify efficacy of recent water clean up efforts. CDPHE and MineWater entered into Compliance Order <br /> and Settlement Agreement IC160803 which provides for monthly sampling of South Mosquito Creek at <br /> SMC003. MineWater has conducted all required sampling pursuant to the Compliance Order on Consent. <br /> A recent cover letter for the monthly sampling pursuant to the Consent Order is excerpted here: <br /> November 22,2022 <br /> Jacob Dyste <br /> Enforcement Specialist <br /> Clean Water Compliance&Enforcement Section <br /> Water Quality Control Division <br /> Colorado Department of Public Health and Environment <br /> 4300 Cherry Creek Dnve South <br /> Denver CO 80246 <br /> Re: October 2022 Sample Results <br /> London Mine Water Tunnel,Permit No.CO-0038334 <br /> Dear Mr Dyste. <br /> Pursuant to the Consent Order which became effective on November 22, 2016 MineWater <br /> presents electronically to the Division results from the monthly sampling of the receiving water <br /> downstream of the London Mine Site(Site),at SMC003,the concentrations of arsenic,cadmium, <br /> copper,lead,silver,and zinc <br /> 30-day 30-day October 2016(ug/L) <br /> Average Average <br /> Analyte C00038334 SMC003 C00038334 SMC003 <br /> pH(su) 7 70 844 <br /> As PD(ugl) RL< 1 0 RL < 1 0 1 7 1 0 <br /> Cd PD(ug,,L) RL<05 081 1 82 30 <br /> Cu PD(u l) 2 0 1 9 55 21 <br /> Pb PD(ugiL) RL<0 5 RL<0 5 2 0 1 2 <br /> Ag PD(ug,L) RL<0 5 RL<0 5 0 025 0200 <br /> Zn PD(ugrL) 258 200 2 600 890 <br /> Hardness(CaCO3) 250 180 <br /> The water samples were collected on 10/05/2022,100312022. 10/19/2022 and 1 012 5/2 0 22 <br />