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Powderhom Coal Company Roadside North and South Ponals Mine Summary of 12/7/00 DMG Aerial Photos Photo Set 1 The set is presented as a montage showing the Powderhom Coal Company (PCC) Roadside Soutlt Portal Facilities Area and adjacent areas, including a portion of Interstate Highway 70 (I-70) and the Colorado River. View is to the east, with I-70 running generally noNt-south, and the Colomdo River flowing to Ute south. Tn this location, "east-bound" I-70 runs north, and "west-bound" cons Soutlt. Visible in Photo "la" foreground is the road bridge over Ilte river which provides access to the Public Service Company Cameo Power Plant, dte PCC Roadside North Portal Facilities Area and refuse disposal areas, as well as BLM lands in Coal Canyon. The backfilled Northwest Intake Portal location is visible along the east-bound I-70 roadcut, directly to tJte east of the semi-trailer Wck on west-bound I-70. Minewater Discharge Paint Outfall 002 is located at the edge of Ote river, at the exVeme lower right comer of Photo "la'". Two 4" siphon pipes are routed out of the mine workings tluough the backfilled NoNnvest Intake Portal to a 6" pipe, which runs to the south along the I-70 road ditch to a culvert which runs beneath I-70. The 6" pipe is routed through the culvert to Outfall 002. Visible in Photo "lc" is the noNt portion of the Roadside South Portal Facilities Area, and the adjacent Cameo I-70 exits and underpass. The mine entrance gate is immediately east of the underpass, with a small guard shack building located at the entrance. Behind the guard shack are cafeteria/trainingboilding, coal lab and office buildings and associated parking area. Swctures to the Soutlt and east of the guard shack are coal preparation plant crushing and washing facilities. [At the wash plant, "clean coal" was separated form "processing waste". Clean coal was routed to the overland conveyor, which is contained within a large culvert, and routed beneath the facilities area and I-70, beneath the underpass. Though not visible in Pltoto Set I, the conveyor is suspended over the Colorado River, and extends overland on the west side of (he river to the Unit Train Loadout. Processing waste was loaded into Wcks and transported to refuse disposal areas CRDA-1 and CRDA-2, in Coal Canyon.] Access Road No. 1 loops around and above the lower facilities, providing access to the portal bench area. Facilities on the portal bench, visible in Pltoto "ld", include from west to east, warehouse, shop, shower house and office facilities. The man-way and conveyor portal openings are visible beneath the office structure. The two portals have been sealed with concrete block wall approximately 100 feel inby the openings, but have not yet been backfilled. Raw coal conveyor system remrtants are visible along dte south 30 side of the portal bench parking area. Also visible in Photo"ld", below the portal bench is the coal stockpile area and portions of the wash plant Immediately to the Soutlt oC the wash plant thickener tank in "ld", is Sediment Pond 8, which provides sediment convol for the portal bench and lower facility areas, and a portion of the Roadside Refuse Disposal Area (RSRDA) outslopes. A portion (approximately the north half) of the RSRDA is visible to the south of the coal stockpile area. The flat top of the pile is an approved material storage area. The South Portal Facilities Area, incltding the entire RSRDA encompasses approximately 25.9 acres of }~~ surface disturbance. The Northwest Intake Portal disturbance is approximately 0.1 acre. ~ Photo Set 2 Photo " 2a" depicts the entire RSRDA. The pile oulslopes were covered with 6 inches of soil, and seeded with a stabilization seedmix in the early 1980's. The RSRDA has not been used for processing waste disposal since that lime. Sediment Pond 9, located below the toe of the pile, at the sculhwesl comer, provides sediment wntrol for the major portion of the RSRDA.