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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, Banc Standards and Metbodologiea 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 ox will be other EPA-approved methods suitable for <br />groundwater analysis with equivalent or lower detection limits. <br />Table 5-1. Constituents, Analytical Methods, and Required Maximum Detection Limits <br />y <br />Anal,te <br />Anal Uca111%Iethod IVlaxrinum Method <br />~ DetectionLimit'~ _ <br />`j[Inits ' ~ .~n <br />Aluminum 1312 M6010B ICP 0.03 m /L <br />Antimon 1312 M6020ICP-MS 0.0002 m /L <br />Arsenic 1312 M6020ICP-MS 0.0005 m /L <br />Asbestos EPA 100.2 7000000 fibers/1 <br />Barium 1312 WG150044 0.003 m /L <br />Be Ilium 1312) M6010B ICP 0.002 m /L <br />Beta and Photon Emitters ESM4202 4 mrem/ ear <br />Boron 1312 M6010B ICP 0.01 m /L <br />Cadmium 1312 M6020ICP-MS 0.001 m /L <br />Chromium 1312 M6010B ICP 0.01 m /L <br />Chloride (1312 DI) M325.2 - <br />Colorimetric <br />1 <br />m /L <br />Cobalt 1312 M6010B ICP 0.01 m /L <br />Co ex 1312 WG150044 0.01- m /L <br />Fluoride 1312 D SM4500F-C 0.01 m /L <br />Gross Alpha Particle <br />Activi <br />EPA 9310 <br />4 <br />Pci/L <br />Iron 1312 M6010B ICP 0.01 m /L <br />Lead 1312 M6010B ICP 0.04 m /L <br />Lithium 1312 M6010B ICP 0.02 m /L <br />Man anese 1312 M6010B ICP 0.005 m /L <br />Merc ]312 M7470 CVAA 0.0002 m /L <br />Nickel 1312 M6010B ICP 0.01 m /L <br />Nitrate (1312-DI) Calculation: <br />NO3NO2 <br />0.02 <br />m /L <br />Total Nitrate/Nitrite as N <br />1312-D M353.2 - <br />Automated C <br />0.02 <br />m /L <br />Nitrite as N (1312-DI) M353.2 - <br />Automated C <br />0.01 <br />m /L <br />Nitrogen, Ammonia (1312- <br />D M350.1 - <br />Automated P <br />0.1 <br />m /L <br />H E150.1 1 standard units <br />P:\D>n\GEN\FS-P-T\2if21\pennimng\Snpulauon Responu\Ground..artr Sampling Plan\Condimn 1 Gmundw.eer Sampling PI>n 3_3~ o3.doc <br />