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COLORADO DEPARTMENT OF PUBL/C HEALTH & ENVIRONMENT -Water Quality Control Division Rationale -Page 4 Permit No. COR-040000 IV. STORMWATER DISCHARGES ASSOCIATED W/TH M/NING OPERATIONS (cont.) 3. Inactive mine sites where, in conformance with the Voluntary Cleanup and Redevelopment Act, (CRS 25-16- 303), mine-waste remediation projects are undenaken. In this case, the SWMP would be prepared, relying in part ors infarmatiors contained in the Voluntary Cleanup Plan. Once the Voluntary Cleanup Plan is approved by the Hazardous Materials and Wasle Management Division, the owner, or third party wish permission of the owner, would submit the completed permit application. After the permit certification is issued, stormwater discharges from the remediation project would be authorized. Certification under this permit would be terminated when the termination criteria and other conditions listed at Part /.F of the permit are met. C. Tvoes of Activities NOT Covered This permit does nor authorize stormwater discharges from other types of regulated industrial activities. Other types of regulated industrial activities that require stormwater discharge permits pursuant to different sections of the regulations (5 CCR 1002-2 Section 6.4.2(5)(6)(!-ii,iv-xi)J are covered under separate general permits. This permit also does not authorize the discharge of process water or mine drainage. Applications for process water or mine drainage discharge permits can be obtained from the Permits and Enforcement Section of the Water Quality Control Division at the address listed in Part l.A.3 of the permit. Stormwater which mites with process water or mine drainage prior to discharge is considered to be process water or mine drainage. Table 1 -Mineral Industry Stormwater Permit Coverage SIC General Code /ndustry Type Permit Note 70 Metal Mining and Milling COR-040000 (1) 12 Coa! Mining COG-850000 (2) 13 Oil and Gas Extraction (including Oil-shale operations) COR-010000 (3) 14 Mining and Quarrying of Sand & Gravel (and other COG-500000 (4) Nonmetallic Minerals Except Fuels) 10. 12 Inactive Metal (and Coal) Mines COR-040000 (5) -- Mine-waste Remediation COR-040000 (6) Notes: (I) This permit, Colorado General Stormwater Discharge Permit for Metal Mining, number COR- 040000. (2) Stormwater discharges from coal mines with surface runoff only are covered by genera! permit COG- 850000. Coverage jot stormwater discharges from coal mines with discharge sources which are authorized under individual CDPS permits, is provided by this permit, Colorado General Srormwater Discharge Permit number COR-040000. (3) Stormwater discharges from oil and gas extraction (including oil-shale operations) are covered under the Colorado General Stormwater Discharge Permit for Light Industry, number COR-010000. (4J Stormwater discharges from active and inactive sand, grave[ and other non-metallic quarrying and mining operations are covered under Colorado General Stormwater Discharge Permit number COG- 500000. (5) Stormwater discharges from inactive metal and coal mines are covered under this permit, Colorado General Stormwater Discharge Permit number COR-040000. (6) Slormwater discharges from mine-waste remediation operations are covered under this permit, Colorado General Stormwater Discharge Permit number COR-040000.