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Areas Subject to Effluent Limitations - The enclosed SWMP maps show the area contributing runoff to the various outfalls, along with the locations of the assorted Small Area Exemptions scattered throughout the properties. Please note that not all of the area denoted is disturbed, especially within the TCC permit boundary. As previously noted, the Colorado Yampa Coal (CYCC) operations have for the most part completed final reclamation activities. Areas of current disturbance are primarily associated with the underground mining operations of TCC. Significant portions of the contributing areas for several outfalls are approaching bond-release eligibility, and are possessed of a substantial vegetative cover. All processing, storage, and materials handling facilities associated with the CYCC Mines, 1, 2, Eckman Park and TCC's Foidel Creek mining operations are contained within the existing NPDES outfall contributing areas as shown on the accompanying SWMP Map. Crushing and loadout facilities are contained by Outfalls 003 and 005, while facilities drainage is handled by outfalls 005-008. In addition, Outfall 005 handles the portal source underground mine discharge and a portion of the coal stockpiles. Outfall 006 handles washbay discharge and surface runoff from facilities and storage areas in addition to the, coal stockpile. The Mine 3 Middle Creek Office and storage area is an approved small area exemption, and is used primarily by the ranch operation. A limited amount of materials are stored outside at the Middle Creek Office, but do not pose a significant risk to the environment in the event of stormwater runoff. Map 24 (Surface Facilities and Freshwater Systems) of the Foidel Creek CDOMG Permit C-82-056 shows the locations of the facilities and storage areas currently in use under the primary area covered by NPDES Permit CO-0027154. Materials Inventory and Significant Spill History - An inventory of materials stored on sight, within areas where the stormwater discharges are not subject to effluent limitations under the permit is limited to topsoil piles, limited equipment storage, rockdust storage, and to stoker coal storage. While there are several topsoil piles which lie outside the current NPDES outfall contributing areas, these areas have BMPs in place which include vegetative cover, rock filters, and berms. The rockdust tank area and the stoker coal storage area lie within alternative sediment control systems, and are not anticipated to contribute significantly to the pollutant load for stormwater runoff. No other significant materials are stored by the operation in the areas subject to this specific SWMP with the exception of a limited amount of equipment, which CYVCC feels do not pose a threat of Page 3