COMPLIANCE INFO_2023 Q4 WATER QUALITY RPT

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Appendix D. Cumulative Historical Data for the Past Year Sample ID Sample Date Parameter Result Lab Result (numeric)Lab Limit Lab Unit Detect Method MW-16 5/22/2023 Sulfate 45 A10 45 2 mg/L Yes 300 MW-16 5/22/2023 Solids, Total Dissolved 940 A10 940 50 mg/L Yes 160.1 MW-16 5/22/2023 Cyanide, Dissolved <0.005 0.005 mg/L No 335.4 MW-16 5/22/2023 Sulfide, Dissolved <0.1 0.1 mg/L No 4500-S D MW-16 5/22/2023 Total Organic Carbon 1.3 1.3 1 mg/L Yes 5310C MW-16 5/22/2023 Chemical Oxygen Demand <25 25 mg O2/L No 410.4 MW-16 5/22/2023 Aluminum, Total <50 50 ug/L No 6010B MW-16 5/22/2023 Antimony, Dissolved <100 100 ug/L No 6010B MW-16 5/22/2023 Arsenic, Dissolved 1.8 J 1.8 2 ug/L Yes 200.8 MW-16 5/22/2023 Chromium, Hexavalent 14 14 2 ug/L Yes 7196 MW-16 5/22/2023 Barium, Dissolved 480 480 10 ug/L Yes 6010B MW-16 5/22/2023 Beryllium, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Cadmium, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Chromium, Dissolved 12 12 10 ug/L Yes 6010B MW-16 5/22/2023 Cobalt, Dissolved <50 50 ug/L No 6010B MW-16 5/22/2023 Copper, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Iron, Dissolved <50 50 ug/L No 6010B MW-16 5/22/2023 Lead, Dissolved <50 50 ug/L No 6010B MW-16 5/22/2023 Manganese, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Mercury, Dissolved 0.22 0.22 0.2 ug/L Yes 7470A MW-16 5/22/2023 Nickel, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Selenium, Dissolved 1.4 J 1.4 2 ug/L Yes 200.8 MW-16 5/22/2023 Silver, Dissolved <10 10 ug/L No 6010B MW-16 5/22/2023 Strontium 1800 1800 10 ug/L Yes 6010B MW-16 5/22/2023 Thallium, Dissolved <1 1 ug/L No 200.8 MW-16 5/22/2023 Tin, Dissolved <1 1 ug/L No 200.8 MW-16 5/22/2023 Vanadium, Dissolved 18 18 10 ug/L Yes 6010B MW-16 5/22/2023 Zinc, Dissolved <10 10 ug/L No 6010B MW-16 8/8/2023 Acetone ND(10)ND 10 ug/L No 8260B MW-16 8/8/2023 Carbon tetrachloride ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Ethanol ND(250)ND 250 ug/L No 8260B MW-16 8/8/2023 Chloroform ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Benzene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,1,1-Trichloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Bromomethane ND(1)ND 1 ug/L No 8260B MW-16 8/8/2023 Chloromethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Methyl Iodide ND(2)ND 2 ug/L No 8260B MW-16 8/8/2023 Dibromomethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Methylene Chloride ND(1)ND 1 ug/L No 8260B MW-16 8/8/2023 Carbon Disulfide ND(1)ND 1 ug/L No 8260B MW-16 8/8/2023 Bromochloromethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Chloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Vinyl Chloride ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Acetonitrile ND(10)ND 10 ug/L No 8260B MW-16 8/8/2023 Bromoform ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Bromodichloromethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,1-Dichloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,1-Dichloroethene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 tert-Butyl Alcohol ND(10)ND 10 ug/L No 8260B MW-16 8/8/2023 Trichlorofluoromethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Dichlorodifluoromethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Isobutyl Alcohol ND(20)ND 20 ug/L No 8260B MW-16 8/8/2023 1,2-Dichloropropane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,1,2-Trichloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 2-Butanone ND(10)ND 10 ug/L No 8260B MW-16 8/8/2023 1,1,2,2-Tetrachloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,2-Dichlorobenzene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Trichloroethene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Hexachlorobutadiene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Naphthalene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,2,3-Trichloropropane ND(1)ND 1 ug/L No 8260B MW-16 8/8/2023 1,2-Dibromo-3-Chloropropane ND(1)ND 1 ug/L No 8260B MW-16 8/8/2023 Ethyl Methacrylate ND(4)ND 4 ug/L No 8260B MW-16 8/8/2023 Ethylbenzene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Styrene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 1,4-Dichlorobenzene ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Allyl Chloride ND(5)ND 5 ug/L No 8260B MW-16 8/8/2023 1,2-Dibromoethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Acrolein ND(10)ND 10 ug/L No 8260B MW-16 8/8/2023 1,2-Dichloroethane ND(0.5)ND 0.5 ug/L No 8260B MW-16 8/8/2023 Propionitrile ND(20)ND 20 ug/L No 8260B MW-16 8/8/2023 Acrylonitrile ND(5)ND 5 ug/L No 8260B MW-16 8/8/2023 4-Methyl-2-Pentanone ND(10)ND 10 ug/L No 8260B Page 794 of 926