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minimum. ~A3:mnomt~~tsrait~oiat*a~~orrthen Stftyr-five ass of the ninety five acres of ~ec~od~daisd~isriet<ubed. RE: AMENDMENT TO MINING PERMIT NO. M-77-193, SWMP REQUIREMENTS STORMWATER MANAGEMENT PLAN In November, 1995, the Colorado Mined Land Reclamation Board approved an application for permit acreage increase by Tezak Heavy Equipment Co, Inc., Penrose, Colorado, foi the Aggregate Source Tunnel Drive Quarry with two conditions. 1) An acceptable Blasting Monitoring Program be initiated, and 2) Stormwaters flowing through the mining area including those stormwaters from above the mining zone that outfafl along Tunnel Drive area be conveyed to the Arkansas River in accordance with landowners and right-of--way owners appro~+al. A Blasting Monitoring Program has been initiated at the site after review and approved by Division of Minerals and Geology. After discussion and negotiation with the Canon Ciry Hydraulic Ditch Company directors and engineering personnel from Southern Pacific, the only option left available for Tezak Heavy Equipment Co, Inc., was to bore a storm outfall culvert of large proportion (app. 50 sq ft opening) under both the hydraulic ditch and the main I ine of the Southem Pacific Railroad and direct storm outflows directly into the Arkansas River. This storm outfall option was deemed undesirable for a number of reasons including: 1) Negative environmental impact of directing storm water outfall into the Arkansas River such as increased sediment loading and increased potential for other pollutants to enter the River system during a major storm event. 2) High cost (at least $150K) and long time frame necessary to acquire right-of--way agreements for all parties involved. 3) The end result will not protect property and right-ol=way owners from storm related impact potentials that exist just upstream from the mine's historical stormwater outfall path. Tezak Heary Equipment Co, Inc., proposes to divert storm flows from the mining area and from the large watershed directly west of the mining area to the north of the existing affected land onto Tezak Heavy Equipment Co. property. This amendment request includes a 35 acre increase for reserve expansion as in the November request and an additional 30 acres of ground to the north of the currently permitted area for purposes of stormwater diversion and containment. Total acres of affected land will increase to 95 acres. The diversion of stormwater wil I take place within the confines of the mining area as stormwater enters the mining zone from the west. Approximately 90% of stormwater volumes anticipated will be diverted to the north, away from Tunnel Drive residents, the hydraulic ditch, and the railroad. The remaining ten per cart of storm flows anticipated will be contained in sediment ponds #2, #3, and #4, as shown on the attached map of mine area. Sediment pond #4, located at the bottom of the current meein haul