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6.7 Products Containing Toxic Materials - Products, such as solder and fluxes, and materials, <br /> such as pipes and fittings, that contain any more than 0.25% lead are prohibited from being <br /> used in the construction, repair, rehabilitation, hydraulic fracturing of a water well, or <br /> abandonment of wells and holes. All pipe joint thread compounds must be lead-free.-_. <br /> Known toxic materials must not be used in well construction. <br /> Board-Approved thread Compounds? During Construction List and Permanent List. <br /> Address specific thread compounds for temporary drill pipe vs. permanent casing? <br /> Subrule addressing hydrocarbon lubricants? <br /> 6.8 Disposal of Fluids Resulting from Well Construction, Development and Disinfection - <br /> Fluids resulting from well construction, development or disinfection must not be discharged into <br /> the waters of the state without first obtaining a permit pursuant to the Colorado Discharge Permit <br /> System (CDPS) administered by the Colorado Department of Public Health and Environment. <br /> Fluid disposal by land application must not flow into or have the potential to flow into surface <br /> waters and must not impact aquatic life or groundwater.-, and must not leave the property on <br /> which the well is located. Fluid wastes may be disposed of by other proper means such as off- <br /> site transport for treatment and final disposal, evaporation ponds, or pumping to a sanitary sewer <br /> system with permission from the appropriate authorities. <br /> Could further define "waters of the state." "Surface waters" as used here and Policy 2020-3 are <br /> not defined. Can improve definitions to describe these terms. Can Policy 2020-3 Short-Term <br /> Discharges to Groundwater be incorporated into this rule? <br /> 6.9 Water Used for Well Construction and Stimulation -All water used during the construction, <br /> development, and stimulation, including hydraulic fracturing, of a well must be obtained from an <br /> approved public supply. If water is not readily available from such a public supply, the water may <br /> be obtained from a groundwater source or from a flowing surface water supply under the <br /> following conditions: <br /> a. water obtained from a groundwater source must be disinfected with a <br /> minimum chlorine concentration of twenty-five (25) mg/I (milligrams per liter); <br /> b. in remote mountainous areas, where adequate public or groundwater sources <br /> are not readily available, water may be obtained from flowing surface waters, <br /> provided that such waters are located upstream from any sewer plant, feedlot, <br /> chemical storage area or other known sources of contamination. These surface <br /> waters must be disinfected by adding chlorine for a minimum concentration of <br /> one-hundred (100) mg/I (Fifty (50) mg/I when polymer or bentonite is used), <br /> with a contact time of one (1) hour and a residual concentration of ten (10) mg/I; <br /> or <br /> c. for reverse rotary construction, only when public or groundwater sources <br /> cannot provide sufficient volumes of drilling water, water may be obtained from <br /> flowing surface water supplies provided that such water is disinfected to a <br /> minimum chlorine concentration of twenty-five (25) mg/I or the well is <br /> disinfected in accordance with the provisions of Rule 6.9.1 (also see Rule 15.7). <br /> 6.9.1 Upon completion, all wells must be disinfected in accordance with Rule 15. <br /> 15.4.1 Upon completion, all wells drilled, developed, or stimulated without using water obtained <br /> from a public supply source must be flushed, cleaned, and disinfected with a minimum <br /> chlorine concentration of five hundred (500) mg/I. This disinfectant must remain in tho <br /> well for a minimum of twelve (12) hours. <br /> 6.9.2 6.9.2 The use of water from wetland areas, lakes, ponds, or known contaminated <br /> groundwater sources is prohibited. <br />