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Table 15 <br />Supplemental Analytical Results, Fourth Quarter 2023 - Austin Road Unit <br />Forward Landfill, Manteca, California <br />FU-04E FU-04W FU-06 FU-17 AMW-1 AMW-2 AMW-4 AMW-7 <br />11/8/2023 11/8/2023 11/16/2023 11/10/2023 11/7/2023 11/7/2023 11/7/2023 11/8/2023AnalyteUnit <br />Volatile Organic Compounds <br />1,1-Dichloroethane µg/L <0.5 <0.5 <0.5 <0.5 1.6 <0.5 <0.5 <0.5 <br />1,2-Dichloroethane µg/L <0.5 <0.5 <0.5 2.0 <0.5 <0.5 <0.5 <0.5 <br />1,2-Dichlorobenzene µg/L 0.70 0.25 J <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <br />1,2-Dichloropropane µg/L 0.20 J 0.31 J 0.45 J 0.92 <0.5 <0.5 <0.5 <0.5 <br />1,4-Dichlorobenzene µg/L 4.5 8.4 4.0 1.6 0.31 J <0.5 <0.5 <0.5 <br />Acetone µg/L <10 <10 <10 31 <10 <10 <10 <10 <br />Benzene µg/L 3.4 6.5 4.9 5.8 <0.5 <0.5 <0.5 <0.5 <br />Chlorobenzene µg/L 0.58 1.2 0.94 <0.5 <0.5 <0.5 <0.5 <0.5 <br />cis-1,2-Dichloroethene µg/L <0.5 <0.5 <0.5 1.2 3.4 <0.5 <0.5 <0.5 <br />Ethylbenzene µg/L 1.2 0.71 1.9 <0.5 <0.5 <0.5 <0.5 <0.5 <br />Methyl t-butyl ether µg/L 1.1 2.1 1.5 0.54 <0.5 <0.5 <0.5 <0.5 <br />Naphthalene µg/L 16 22 6.2 7.0 <0.5 <0.5 <0.5 <0.5 <br />t-Butyl alcohol µg/L 2,500 3,700 2,000 2,500 <0.5 <0.5 <0.5 <0.5 <br />Tetrachloroethene µg/L <0.5 <0.5 <0.5 <0.5 3.8 <0.5 <0.5 <0.5 <br />Toluene µg/L 0.92 0.61 0.52 1.1 <0.5 <0.5 <0.5 <0.5 <br />Total Xylenes µg/L 4.5 3.8 1.2 13 <1.0 <1.0 <1.0 <1.0 <br />Trichloroethene µg/L <0.5 <0.5 <0.5 0.16 J 2.5 <0.5 <0.5 <0.5 <br />Vinyl Chloride µg/L <0.5 <0.5 <0.5 <0.5 0.24 J <0.5 <0.5 <0.5 <br />All other VOCs µg/L ND ND ND ND ND ND ND ND <br />Notes: <br />1. Only organic compounds reported at concentrations above the detection limits are shown. <br />Acronyms and Abbreviations: <br />-- = not analyzed; inorganics/metals analyzed semiannually in second and fourth quarters <br />< = indicates the analyte was not detected at a concentration above laboratory practical quantitation limit <br />°C = degree Celsius <br />µS/cm = microSiemen per centimeter <br />mg/L = milligram per liter <br />ND = Not Detected <br />NTU = nephelometric turbidity unit <br />SU = standard pH unit <br />Qualifier: <br />J = Estimated concentration <br />Forward 4Q23 Tables 2/2