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<br /> <br />Page 3 <br />Permit No. COG-500000 <br />CJ <br />A. <br />PARTi <br />COVERAGE UNDER THIS PERMIT <br />Industries Covered <br />Under this general permit, the following types of facilities may be granted authorization to dischazge treated process- <br />generated wastewaters and/or stormwaur runoff into waters of the stau of Colorado: <br />Facilities engaged in the mining and processing of sand and gravel (ituluding rock or stone used as aggegate), and <br />mining and quarrying of other nonmetallic minerals (except fuels or graphite), as described by the Standazd Industrial <br />Classification (SIC) Code 14, and azphalt and concrete batch planu located at facilities covered under this permit. <br />a. <br />b. <br />Stormwater vs. Process water: When stotmwaur mixes with process wazer, the process waur limitations <br />(Part I.B of the permit) apply to the dischazge of that mixed water. Process-waers from these facilities aze <br />subject to effluent limitations under 40 CFR 436. <br />Process Water: For purposes of this permit, process generaud wastewaters include: <br />1) Product wash waters; <br />CJ <br />c. <br />2) Maintenance/equipment wash waters; <br />3) Transpor[ waters; <br />4) Scrubber waters (crushers or classifiers); <br />5) Mine dewatering tgrottndwa[er and/or runoff); <br />6) Other process water as determined by the permit issuing authority; <br />7) Stormwater runoff from mmc or processing azeas; and <br />8) Stormwa[er runoff u htch mtzes with process generaud wastewaur prior to sampling, <br />Stormwater: The stormwater secuon (Part I.C of the permit) is intended to cover stormwaur runoff from <br />those portions of a nonmetalliir mmerals production operation that aze not subject to effluent limitations under 40 <br />CFR 436. <br />DredPe and Fill Opgrations <br />This permit does not cons[itute authorization under 33 U.S.C. 1344 (Section 404 of the Clean Waer Act) of any stream <br />dredging or filling operations. <br />• <br />