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5.3 Sampling Constituents and Analytical Methods <br />The constituents from Table 1 through Table 4 in Colorado Department of Health and Environment, <br />Water Quality Control Commission, Regulation 41, Basic Standards and Methodologies for Groundwater will <br />be analyzed to characterize the baseline ambient water quality of the St. Charles River alluvial aquifer, <br />Dakota aquifer, and Codell sandstone aquifer (if water is found in this sandstone unit). Table 5 -1 <br />summarizes the constituents and analytical methods for this Sampling Plan. The analytical methods <br />will match those listed in Table 5 -1 or will be other EPA - approved methods suitable for <br />groundwater analysis with equivalent or lower detection limits. <br />Table 5 -1. Constituents, Ana <br />'cal Methods, and Re • uired Maximum Detection Limits <br />Aluminum (1312) <br />Antimony (1312) <br />Arsenic (1312) <br />Asbestos <br />Barium (1312) <br />Beryllium (1312) <br />Beta and Photon Emitters <br />Boron (1312) <br />Cadmium (1312) <br />Chromium (1312) <br />Chloride (1312 DI) <br />Cobalt (1312) <br />Copper (1312) <br />Fluoride (1312 DI) <br />Gross Alpha Particle <br />Activity <br />Iron (1312) <br />Lead (1312) <br />Lithium (1312) <br />Manganese (1312) <br />Mercury (1312) <br />Nickel (1312) <br />Nitrate (1312 -DI) <br />Total Nitrate /Nitrite as N <br />(1312 -DI) <br />Nitrite as N (1312 -DI) <br />Nitrogen, Ammonia (1312 - <br />DI) <br />pH <br />M6010B ICP 0.03 mg /L <br />M6020 ICP -MS <br />M6020 ICP -MS <br />EPA 100.2 <br />WG150044 <br />M6010B ICP <br />ESM4202 <br />M6010B ICP <br />M6020 ICP -MS <br />M6010B ICP <br />M325.2 - <br />Colorimetric <br />M6010B ICP <br />WG150044 <br />SM4500F -C <br />EPA 9310 <br />M6010B ICP <br />M6010B ICP <br />M6010B ICP <br />M6010B ICP <br />M7470 CVAA <br />M6010B ICP <br />Calculation: <br />NO3NO2 <br />M353.2 — <br />Automated C <br />M353.2 — <br />Automated C <br />M350.1 — <br />Automated P <br />E150.1 <br />0.0002 <br />0.0005 <br />7000000 <br />0.003 <br />0.002 <br />4 <br />0.01 <br />0.001 <br />0.01 <br />1 <br />0.01 <br />0.01 <br />0.01 <br />4 <br />0.01 <br />0.04 <br />0.02 <br />0.005 <br />0.0002 <br />0.01 <br />0.02 <br />0.02 <br />0.01 <br />0.1 <br />1 <br />mg /L <br />mg /L <br />fibers /1 <br />mg /L <br />mg /L <br />mrem /year <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />Pci /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />mg /L <br />standard units <br />P: \Data \GEN \F- S- P- T\22421 \Pemstmng \Snpulanon Response \Groundwater Sampling Plan \Condition 1 Groundwater Sampling Plan &.24 03.doc <br />9 <br />