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may be omitted from the initial analytical suite, but only after Division approval. The water quality <br />standards may be found at the following CDPHE websites: <br />The Colorado Basic Standards for Ground Water (Regulation 41): <br />http://www.cdi)he.state.co.us/regulations/wgccregs/100241 wgccbasicstandardsforgroundwater pdf <br />The Colorado Basic Standards for Surface Water (Regulation 31): . <br />http://www.cdphe.state.co.us/regulations/wgccregs/100231wgccbasicstandardsforsurfacewater pddf <br />Be advised that these documents are periodically revised by the WQCC, so check the websites <br />occasionally to ensure you have the most current version. <br />Analytes that must be included in sampling programs at metal mining sites shall include: <br />For ground water sampling: All parameters listed on Table 1 through 4 in Regulation 41 - Basic <br />Standards for Ground Water. Unless these parameters are relevant to the operation, they normally may <br />omit Total Coliforms, Asbestos, Free Cyanide (unless cyanide is used in processing), Chlorophenol, <br />Color, Corrosivity, Foaming Agents (unless the objective of the monitoring is a drilling program), <br />Odor, Phenol, Gross Alpha Particle Activity, and Beta/Photon emitters. <br />If the site is a uranium mine or uranium processing facility or if radionuclides are suspected, then the <br />operator must include Gross Alpha Particle Activity, plus the Beta and Photon Emitters. They may also <br />have to include some or all of the parameters listed under "Radioactive Materials Standards" (page 6 in <br />the current version of Regulation 41). <br />For surface water sampling: All parameters on Tables I through III in Regulation 31 - Basic <br />Standards and Methodologies for Surface Water. They normally may omit D.O., Suspended Solids, <br />Temperature, E. Coli, Total Residual Chlorine, Free Cyanide (unless cyanide is used in processing), <br />Sulfide, and Asbestos, unless their operations are somehow impacting these parameters. The Operator <br />can provide a total chromium analysis rather than the separate analyses of the chromium species Cr(III) <br />and Cr(VI). To allow comparison of water quality data to aquatic life standards, the analyses must also <br />report either total hardness or separate analyses of Calcium and Magnesium. <br />If the site is a uranium mine or uranium processing facility or if radionuclides are suspected, then the <br />operator may have to include some or all of the parameters listed under "Radionuclide Standards" (page <br />26 in the current version of Regulation 31). <br />After a representative number of sampling events (5 quarters for a DMO), and only with Division <br />approval, operators may propose to eliminate certain analytes that repeatedly register undetectable <br />concentrations in the analyses. <br />C. Sampling and Analytical Protocols <br />Labeling: All samples should be appropriately labeled to indicate: <br />• Project name <br />• Date of sample <br />• Sample designation, sufficiently descriptive to locate the site on a map, or indexed to a <br />detailed description in a field notebook.