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MONITORING AND REPORTING PROGRAM NO. R5-2010-0016 -19- <br />SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS <br />NORTH COUNTY LANDFILL <br />SAN JOAQUIN COUNTY <br /> <br /> <br /> <br /> <br /> <br />INORGANIC CONSTITUENTS OF CONCERN (COCs), <br />APPROVED USEPA ANALYTICAL METHODS, & CONCENTRATION LIMITS <br />Table G.1 <br />Concentration Limit1 <br />Constituent USEPA Test <br />Method Unsaturated <br />Zone <br />Ground- <br />water <br />Surface <br />Water3 <br />Field Parameters <br />Elevation, Ft. MSL ---- n/a ---- n/a <br />pH, pH units 150.1 or meter ---- ≥6, ≤8 ---- <br />Temperature, OC, OF ---- ---- ---- ---- <br />Turbidity, NTU ---- ---- 18 209 <br />Dissolved Oxygen 360.1 or meter ---- ---- ---- <br />Oxidation-Reduction (Redox) <br />Potential, mv <br />---- ---- ---- n/a <br />Specific conductance, µMhos/cm 120.1 or meter ---- 450 695 <br /> <br />General Minerals, mg/L <br />Total Dissolved Solids (TDS) 2540C ---- 300 468 <br />Total Alkalinity 2320B ---- 1652 334 <br />Total Hardness 2340B ---- ---- ---- <br />Chemical Oxygen Demand (COD)410.4 ---- ---- 565 <br />Major Anions <br />Bicarbonate 2310B ---- 130 ---- <br />Chloride 300 ---- 40 61 <br />Nitrate – Nitrogen 300 ---- 4 10 <br />Sulfate 300 ---- 31 69 <br />Major Cations <br />Calcium 200.7/6010 ---- 31 ---- <br />Magnesium 200.7/6010 ---- 23 ---- <br />Potassium 200.7/6010 ---- 7 ---- <br />Sodium 200.7/6010 ---- 31 ---- <br /> <br />Dissolved Metals, µg/L5 <br />Aluminum 200.7/6010 ---- 2102 3,050 <br />Antimony 200.7/6010 ---- PQL ---- <br />Arsenic 200.9/200.8 ---- PQL ---- <br />Barium 200.7/6010 ---- 902 254 <br />Beryllium 200.7/6010 ---- PQL ---- <br />Boron 200.7/6010 ---- 1702 ---- <br />Cadmium 200.7/6010 ---- PQL ----