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ensure sediment laden stormwater from disturbed areas does not leave the site. There will be no <br /> discharge. A Stormwater Discharge Permit and associated Stormwater Management Plan <br /> (SWMP)will be developed for this operation. <br /> As stated above, no water will be required or involved so there are no sources of supply. <br /> A Stormwater Discharge permit will be maintained from the Water Quality Control Division of <br /> the Colorado Department of Public Health and Environment and associated Stormwater <br /> Management Plan developed. However,the applicant will not be acquiring or applying for a <br /> National Pollutant Discharge Elimination System Permit since there will be no discharge. <br /> The statewide groundwater standards will be followed as established by the Water Quality <br /> Control Commission (WQCC). <br /> Classified areas: Operations that may affect the quality of ground water in a specified area that <br /> has been classified by the WQCC shall comply with standards applicable to such specified area. <br /> Unclassified areas: operations that may affect the quality of groundwater, which has not been <br /> classified by the WQCC, shall protect the existing and reasonable potential future uses of such <br /> groundwater. <br /> Water quality standards applicable to groundwater that has been classified, state-wide standards <br /> for certain pollutants, and interim narrative standards set by the WQCC shall supersede any <br /> numeric protection levels established for the subject pollutants. <br /> 3. Water Consumption for the Operation and Water Rights <br /> Dust will be controlled by both magnesium chloride and water. Water will only be used to spot <br /> water between applications of magnesium chloride in order to eliminate any problem dust areas. <br /> The total annual depletions for this operation are expected to be less than 0.5 acre-ft given the <br /> low production and minimal need for dust control. <br /> Robinson Gravel No 1 <br /> September 2018 G-3 <br />