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. , iLi..iontil,.. .__. tG`'~_l~ PiSiIIfi'1' NU"1 L'L:'.: COG-850UD0 The major types of wastewater in the coal mining industry are: (Continued) 2. Surface Runoff - Precipitation-induced runoff from an active mining area including runoff from coal storage piles, preparation plants, refuse piles, loadout facilities and other disturbed areas; also precipitation- induced runoff from the revegetating surface of a post-mining area. COVERAGE UNDER THIS PERAlIT: Under this general permit, owners and operators of coal mining facilities may be granted authorization to discharge into Che wagers of the State of Colorado provided the sources of wastewater from Chest faci.licies are Limited co precipitation-induced runoff. This general permit does not cover coal mining facilities with discharges such as mine drainage, a domestic sewage treatment plan[ discharge, spoils spring wastewater, or coal preparation plant water. Discharge permits for these facilities will be issued on an individual basis. The following iisc shows additional criteria which will be used in evaluating whether or not an individual permit may be required instead of a general permit: 1. Proximity of the operation to a landfill or mine or mill tailings; 2. Evidence of non-compliance under a previous permit for the operation; 3. Presence of downstream drinking water intakes; 4. Preservation of high quality water; 5. Addition of flocculancs (settling agents or chemical additives) to water prior to discharge; 6. Use of land application as a means of discharge (ocher Chan for dust control). This permit does not constitute authorit}~ under the provisions of 33 USC 1344 (Section 404 of the Glean [dater Ac [) for any dredging or filling operations. DURATION OF THIS PERMIT This permit is issued for a period of appro:;imacely 5 years. The permictee's authority to discharge under this permit is approved until the expiration dace of the general permit.