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DRAFT [TENTATIVE] MONITORING & REPORTING PROGRAM R5-2023-XXXX 9 <br />FORWARD, INC. <br />FORWARD LANDFILL <br />SAN JOAQUIN COUNTY <br />determine if such analyses will be required.5 (Title 27, § 20420, <br />subds. (e)-(f).) <br />Table 7—Unsaturated Zone Detection Monitoring (Soil Pore Gas), <br />Constituent Parameters <br />Constituent Parameter GeoTracker <br />Code <br />Units Sampling <br />Freq. <br />Reporting <br />Freq. <br />Method TO-15 VOCs (various)µg/cm3 Quarterly Quarterly <br />Methane CH4 %Quarterly Quarterly <br />See Glossary for definitions of terms and abbreviations in table. <br />c. Quarterly Lysimeter Inspection—Pan lysimeters shall be <br />inspected quarterly for the presence of liquid, which shall then be <br />analyzed for the Monitoring Parameters in Table 8 (Physical <br />Parameters) and Table 9 (Constituent Parameters). (Title 27, <br />§ 20420, subds. (e)-(f).) If liquid is detected in a previously dry pan <br />lysimeter, the Discharger shall notify Central Valley Water Board <br />staff within seven days of the detection. <br />Table 8—Unsaturated Zone Detection Monitoring (Lysimeters), <br />Physical Parameters <br />Physical Parameter GeoTracker <br />Code <br />Units Sampling <br />Freq. <br />Reporting <br />Freq. <br />Electrical Conductivity SC µmhos/cm Quarterly Quarterly <br />pH PH pH Units Quarterly Quarterly <br />Volume of Removed Liquid (none)Gallons Monthly Quarterly <br />See Glossary for definitions of terms and abbreviations in table. <br />5 A gas analyzer for methane concentrations or a Photo Ionization Detector (PID) for total VOCs <br />concentrations may be used. If methane concentrations exceed 1 percent by volume OR organic vapors <br />(total VOCs) exceed 1 ppm, a gas sample shall be obtained and analyzed for VOCs using Method TO-15. <br />Both the screening results and lab analysis results shall be reported. Otherwise, the methane or total <br />VOC screening results shall be reported, and no further lab analysis will be required.