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Page 3 Permit No. COG-500000 PARTI COVERAGE UNDER THIS PERMIT Industries Covered Undzr this general permit, the following types of facilities may be granted authorization to discharge treated process- generated wastewaters and/or stormwa[er runoff into waters of the state of Colorado: Facilities engaged is the mining and processing of sand and gravel (including rock or stone used as aggregatz), and mining and quarrying of other nonmetallic minarets (except fuels or graphite), as described by the Standard Industrial Classification (SIC) Cale 14, and asphalt and concrete batch plants located at facilities covered under SIC code 14. a. Stormwater vs. Process water: When stormwater mixes with process water, the process water limitations (Part I.B of the permit) apply [o the discharge of that mined water. Process waters from these facilities are subject to effluent limitations under 40 CFR 436. b. Process Water: For purposes of this permit, process generated wastewaters include: 1) Product wash waters; 2) Maintenance/equipment wash waters; 3) Transport waters; 4) Scrubber waters (crushers or classifiers); 5) Mine dewatering (groundwater and/or runoff); 6) Otber process water as determined by the permit issuing authority; 7) Slormwater runoff from mine or processing areas; and S) Stormwater runoff which mixes with process generated wastewater prior to sampling. c. Stormweter: The stormweter section (Part I.C of the permit) is intended to cover stormwater runoff from those portions of a nonmetallic minerals production operation that are not subject [o effluent limitations under 40 CFR 436. Dredge and Fill Operations This permit does not constim[e authorization under 33 U.S.C. 1344 (Section 404 of the Clean Water Act) of any stream dredging or filling operations. 3. Ao~liration Reauirenenfs In order to be considered eligible for authorization to discharge under the terms and conditions of this permit, the owner, operator, andlor authorized agent of any facility desiring to discharge must submit, by letter or hand delivery, the discharge application form, available from the Water Quality Control Division (the 'Division'), which generally requires the following information: a. Name, address, end descriptive location of the facility; b. Name of principal in charge of operation of the facility;