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Table 3cSummary of Analytical Results for Groundwater Monitoring Well Network - Deep ZoneForward Landfill Quarterly Monitoring Report – Third Quarter 2025 9999 South Austin Road San Joaquin County, CaliforniaAMW-6 AMW-23D AMW-28AMW-28 (Dup)AMW-33 AMW-34 AMW-34M AMW-36AMW-378/7/2025 8/5/2025 8/8/2025 8/8/2025 8/7/2025 8/5/2025 8/5/2025 8/6/2025 8/4/2025Field ParameterspH SU 7.75 8.22 7.63 -- 7.4 7.96 7.6 8.13 7.75 Specific Conductance μS/cm 511 209 857 -- 1075 188 771 288 602 Temperature°C19.1 19 18.8 -- 18.8 19.8 19.4 20.9 18.6 Turbidity NTU 20 1 9 -- 1 2 2 1 2 Monitoring Parameters – RoutineBicarbonate Alkalinity mg/L 210 110 270 270 280 110 250 130 210 Calcium, Dissolved mg/L 47 16 82 81 110 13 65 25 55 Carbonate Alkalinity mg/L <2.5 <2.5 <2.5 <2.5 <5.0 <2.5 <2.5 <2.5 <2.5 Chloride mg/L 33 7.8 64 64 130 7.2 69 16 32 Magnesium, Dissolved mg/L 20 5.6 42 42 50 5.2 30 8.9 23 Nitrate as Nitrogen mg/L 3.3 <0.10 21 21 29 <0.10 12 -- 11 Potassium, Dissolved mg/L 6.4 3.4 6.8 6.8 7.8 2.5 6.4 2.4 6.3 Sodium, Dissolved mg/L 24 16 42 42 46 17 25 24 29 Strontium, Dissolved mg/L 0.46 0.18 0.87 0.87 1 0.15 0.67 0.24 0.56 Sulfate mg/L 27 4.0 48 48 36 0.97 J 44 6.2 31 Total Dissolved Solids mg/L 340 162 517 526 635 157 506 198 404 1,2,3-Trichloropropane by SRL 524M1,2,3-Trichloropropaneμg/L<0.0050 <0.0050 0.015 0.020 0.0083 <0.0050 <0.0050 <0.0050 <0.0050 VOCs by USEPA Method 8260Tetrachloroethene μg/L0.45 J<0.50 0.28 J 0.45 J<0.50 <0.50 <0.50 <0.50 <0.50 Trichloroetheneμg/L0.14 J<0.50 <0.50 0.17 J<0.50 <0.50 <0.50 <0.50 <0.50 Notes:1. Only VOCs reported above the detection limits are shown.3. Nitrate as Nitrogen results are absent for monitoring well AMW-36 due to a clerical error made by the laboratory.Acronyms and Abbreviations:°C = degree Celsius< = the analyte was not detected at a concentration greater than laboratory practical quantitation limitμg/L = microgram per literμS/cm = microSiemen per centimeter Dup = duplicate samplemg/L = milligram per literNTU = nephelometric turbidity unitSRL = the Department of Public Health's Sanitation and Radiation LaboratoriesSU = standard pH unitUSEPA = United States Environmental Protection AgencyVOC = volatile organic compoundQualifier:J = Estimated concentration.AnalyteUnit2. Bold indicates the analyte was detected at a concentration greater than the laboratory practical quantitation limit. A bolded value with a J qualifier represents exceedance of the laboratory method detection limit.Forward 3Q25 Tables 1/1