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Appendix D - Cumulative Historical Data for the Past Year <br />EW-1 5/23/2025 Carbon tetrachloride 36 36 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 Chlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Chloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Chloroform 5.6 5.6 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 Chloromethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Dibromochloromethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,2-Dibromo-3-Chloropropane <1 ND 1 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,2-Dibromoethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Dibromomethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,2-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,3-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,4-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Dichlorodifluoromethane 0.55 0.55 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 1,1-Dichloroethane 0.32 J 0.32 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 1,2-Dichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,1-Dichloroethene 0.68 0.68 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 cis-1,2-Dichloroethene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 trans-1,2-Dichloroethene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,2-Dichloropropane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 cis-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 trans-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Ethylbenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Hexachlorobutadiene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Methylene Chloride <1 ND 1 μg/L ug/L No 8260B <br />EW-1 5/23/2025 MTBE <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Naphthalene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Styrene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,1,1,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,1,2,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Tetrachloroethene 6.8 6.8 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 Toluene 1 1 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 1,2,4-Trichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,1,1-Trichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,1,2-Trichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Trichloroethene 4.3 4.3 0.5 μg/L ug/L Yes 8260B <br />EW-1 5/23/2025 Trichlorofluoromethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 1,2,3-Trichloropropane <1 ND 1 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Vinyl Chloride <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Xylenes, Total <1 ND 1 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Acetone <10 ND 10 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Acrylonitrile <5 ND 5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Tert-Amyl-Methyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 tert-Butyl Alcohol <10 ND 10 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Carbon Disulfide <1 ND 1 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Trans-1,4-Dichloro-2-Butene <5 ND 5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Diisopropyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Ethanol <250 ND 250 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Ethyl-t-Butyl Ether <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 5/23/2025 2-Hexanone <10 ND 10 μg/L ug/L No 8260B <br />EW-1 5/23/2025 2-Butanone <10 ND 10 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Methyl Iodide <2 ND 2 μg/L ug/L No 8260B <br />EW-1 5/23/2025 4-Methyl-2-Pentanone <10 ND 10 μg/L ug/L No 8260B <br />EW-1 5/23/2025 Vinyl acetate <10 ND 10 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Chlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Chloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Chloroform 3.6 3.6 0.5 μg/L ug/L Yes 8260B <br />EW-1 8/8/2025 Chloromethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Dibromochloromethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,2-Dibromo-3-Chloropropane <1 ND 1 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,2-Dibromoethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Dibromomethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,2-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,3-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,4-Dichlorobenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Dichlorodifluoromethane 0.14 J 0.14 0.5 μg/L ug/L Yes 8260B <br />EW-1 8/8/2025 1,1-Dichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,2-Dichloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,1-Dichloroethene 0.25 J 0.25 0.5 μg/L ug/L Yes 8260B <br />EW-1 8/8/2025 cis-1,2-Dichloroethene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 trans-1,2-Dichloroethene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,2-Dichloropropane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 cis-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 trans-1,3-Dichloropropene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Ethylbenzene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Hexachlorobutadiene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Methylene Chloride <1 ND 1 μg/L ug/L No 8260B <br />EW-1 8/8/2025 MTBE <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Naphthalene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Styrene <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,1,1,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 1,1,2,2-Tetrachloroethane <0.5 ND 0.5 μg/L ug/L No 8260B <br />EW-1 8/8/2025 Tetrachloroethene 3.1 3.1 0.5 μg/L ug/L Yes 8260B <br />EW-1 8/8/2025 Toluene 0.9 0.9 0.5 μg/L ug/L Yes 8260B