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Table 15 <br />Supplemental Analytical Results, First Quarter 2024 – Austin Road Unit <br />Forward Landfill Water Quality Monitoring Report – First Quarter 2024 <br />9999 South Austin Road <br />San Joaquin County, California <br />FU-04E FU-04W FU-06 FU-17 AMW-1 AMW-2 AMW-4 AMW-7 <br />2/2/2024 2/2/2024 2/2/2024 2/2/2024 1/25/2024 1/25/2024 1/25/2024 1/25/2024 <br />Field Parameters <br />pH SU 7.14 6.92 7.01 6.95 7.08 7.55 7.6 7.74 <br />Specific Conductance µS/cm 6,201 6,239 10,600 1,722 794 987 525 588 <br />Temperature °C 28.3 31.4 24.3 15.6 18.2 17.4 16.7 18.4 <br />Turbidity NTU 19 15 18 2 19 1 6 1 <br />Inorganic Constituents <br />Dissolved Cyanide mg/L --------<0.005 <0.005 <0.005 <0.005 <br />Dissolved Sulfide mg/L <0.1 <0.1 <0.1 0.06 J <0.1 <0.1 <0.1 <0.1 <br />Metals <br />Aluminum, dissolved mg/L 0.025 J <0.05 <0.5 0.024 J <0.05 0.027 J <0.05 <0.05 <br />Antimony, dissolved mg/L 0.016 J 0.017 J <1 <0.1 <0.1 <0.1 <0.1 <0.1 <br />Arsenic, dissolved mg/L <0.05 <0.05 <0.5 <0.05 <0.05 <0.05 <0.05 <0.05 <br />Arsenic, total mg/L --------<0.05 ----<0.05 <br />Barium, dissolved mg/L 3.0 2.9 3.5 1.9 0.34 0.18 0.23 0.19 <br />Beryllium, dissolved mg/L <0.01 <0.01 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Cadmium, dissolved mg/L 0.0022 J 0.0013 J <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Chromium, dissolved mg/L 0.010 0.010 0.032 J 0.0011 J <0.01 0.0011 J <0.01 0.004 J <br />Chromium, Hexavalent mg/L 0.00047 0.0003 <0.0002 0.000034 J 0.000043 J 0.0022 0.0005 0.0054 <br />Cobalt, dissolved mg/L 0.0085 J 0.0079 J 0.013 J 0.011 J <0.05 <0.05 <0.05 <0.05 <br />Copper, dissolved mg/L <0.01 <0.01 0.016 J <0.01 <0.01 <0.01 <0.01 <0.01 <br />Iron, dissolved mg/L 0.68 0.71 1.4 1.8 <0.05 <0.05 <0.05 <0.05 <br />Iron, total mg/L --------1.80 ----0.054 <br />Lead, dissolved mg/L 0.0058 J 0.0046 J <0.5 <0.05 <0.05 <0.05 <0.05 <0.05 <br />Manganese, dissolved mg/L 1.3 1.8 2.9 11 1.9 <0.01 <0.01 0.0120 <br />Manganese, total mg/L --------1.8 ----<0.01 <br />Mercury, dissolved mg/L <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 0.000026 J 0.000042 J <0.0002 <br />Nickel, dissolved mg/L 0.056 0.10 0.24 0.014 0.004 J <0.01 <0.01 <0.01 <br />Selenium, dissolved mg/L 0.093 J 0.063 J <1 <0.1 <0.1 <0.1 <0.1 <0.1 <br />Silver, dissolved mg/L <0.01 <0.01 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Thallium, dissolved mg/L <0.1 <0.1 <1 <0.1 <0.1 <0.1 <0.1 <0.1 <br />Tin, dissolved mg/L 0.012 J <0.05 <0.5 <0.05 <0.05 <0.05 <0.05 <0.05 <br />Vanadium, dissolved mg/L 0.0046 J 0.0032 J <0.1 0.0032 J 0.023 0.022 0.036 0.022 <br />Zinc, dissolved mg/L <0.01 <0.01 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01 <br />Volatile Organic Compounds <br />1,1-Dichloroethane µg/L <0.5 <0.5 <0.5 <0.5 1.5 <0.5 <0.5 <0.5 <br />1,2-Dichlorobenzene µg/L <0.5 <0.5 0.16 J 0.08 J <0.5 <0.5 <0.5 <0.5 <br />1,2-Dichloroethane µg/L <0.5 <0.5 <0.5 1.1 <0.5 <0.5 <0.5 <0.5 <br />1,2-Dichloropropane µg/L 0.4 J 0.66 0.61 0.68 <0.5 <0.5 <0.5 <0.5 <br />1,4-Dichlorobenzene µg/L 10 11 3.7 1.8 <0.5 <0.5 <0.5 <0.5 <br />2-Butanone (MEK)µg/L <10 <10 <10 1,300 <10 <10 <10 <10 <br />4-Methyl-2-Pentanone µg/L <10 <10 <10 8.8 J <10 <10 <10 <10 <br />Acetone µg/L 12 <10 18 400 <10 <10 <10 <10 <br />Benzene µg/L 8.1 10 5.8 4.7 <0.5 <0.5 <0.5 <0.5 <br />Chlorobenzene µg/L 1.5 1.6 <0.5 <0.5 0.29 J <0.5 <0.5 <0.5 <br />cis-1,2-Dichloroethene µg/L <0.5 1.2 <0.5 <0.5 2.4 <0.5 <0.5 <0.5 <br />Di-isopropyl ether µg/L <0.5 <0.5 <0.5 0.29 J <0.5 <0.5 <0.5 <0.5 <br />Ethylbenzene µg/L 21 28 8 6.9 <0.5 <0.5 <0.5 <0.5 <br />Methyl tert-butyl ether µg/L 1.0 1.5 0.73 0.35 J <0.5 <0.5 <0.5 <0.5 <br />Naphthalene µg/L 22 21 5.6 3.4 <0.5 <0.5 <0.5 <0.5 <br />tert-Butyl alcohol µg/L 1,700 4,000 2700 75 <10 <10 <10 <10 <br />Tetrachloroethene µg/L <0.5 <0.5 <0.5 <0.5 4.2 <0.5 <0.5 <0.5 <br />Toluene µg/L 3.1 3.8 1.3 3.8 <0.5 <0.5 <0.5 <0.5 <br />Total Xylenes µg/L 33 50 11 17 <1 <1 <1 <1 <br />Trichloroethene µg/L 0.14 J 0.22 J 0.13 J 0.2 J 2.9 <0.5 <0.5 <0.5 <br />Vinyl chloride µg/L <0.5 2.2 <0.5 0.16 J 0.27 J <0.5 <0.5 <0.5 <br />Notes: <br />1. Only organic compounds reported at concentrations above the detection limits are shown. <br />2. Bold indicates the analyte was detected at a concentration greater than the laboratory practical quantitation limit. <br />Acronyms and Abbreviations: <br />-- = not analyzed; inorganics/metals analyzed semiannually in second and fourth quarters <br />< = analyte was not detected at a concentration greater than the laboratory practical quantitation limit <br />°C = degree Celsius <br />µg/L = microgram per liter <br />µS/cm = microSiemen per centimeter <br />mg/L = milligram per liter <br />NTU = nephelometric turbidity unit <br />SU = standard pH unit <br />Qualifier: <br />J = Estimated concentration. <br />Analyte Unit <br />Forward 1Q24 Tables 22/22