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STORMWATER MANAGEM~ PLAN SAND AND GRAVEL MINING ACTIVITY DESCRIPTION The sand and gravel mining site is located In SW/4 of Section 22 T12S R82W, In eastern EI Paso County. The site consists of approximately 10 acres. The purpose of the mining operation Is primarily to provide gravel and Till matedals for the EI Paso County Department of Transportation operations. The mining will be a dry, open pit rnelhod of mining In a location That Is nGf visible from Soapweed Rcad. In order to minimize the size of lire disturbed area, the mining wi l consist of surface excavation of relatively small increments. The salvaged top soil is stockpiled for reclamation use when the area is reseeded, The mining equipment consists of bulldozers, loaders or graders which remove the gravel and place it in trucks for transport. Excess material is stockpiled and then removed by trucks as needed. Storrrrwater el this site will be primarily conlalned In the pit. The maJor drelnages in the area will not ho disturbed. These are small drelnages that only run during snowmelt or storm events. Any runoff Into the excavation pit area will be conlalned within the pit. The sloped walls Inside the pit and the pit floor will be graded to drain toward the pit floor. The stormwater drainage Inside the pit will be contained in the pit. Portions of the pit have berms and swales to direct stormwater runoff into or away from the pit. All of these are shown on the site map. The Standard Industrial Classification (SIC) for the Sokol Pit is 1442 -Sand and Gravel, General Permit. The receiving waters for this site is an intermittent tributary of Brackett Creek. II. DESCRIPTION OF POTENTIAL POLLUTION SOURCES/MATERIAL INVENTORY A. DESCRIPTION OF SIGNIFICANT MATERIALS Materials used at the facility are sand and gravel stockpiles. The only slgnlTicant material exposed to stormwater Is sand and gravel in the stockpiles and the mine slopes of the pit. Stockpiles and mined scopes runoff Is contained In the pit area. Primary access roads are unpaved and used bygravel-hauling trucks. POTENTIAL POLLUTANTS IN STORMWATER DISCHARGES An estimation of lire type of pollutants that maybe present In stormwater discharges associated with sand and gravel activity al the facility is suspended solids. C. SAMPLING DATA There were no stormwater discharge samples collected for this facility, nor will there be . III. STORMWATER MANAGEMENT CONTROLS A. STORMWATER MANAGEMENT PLAN ADMINISTRATORS The following chart outlines the Pollution Prevention Team for the facility. The EI Paso Ccunly Department of Transportation (EPC-DOT) is responsible for essudng the site Is in conformance with the SWMP, training and Informing all personnel as to the requirements of the SWMP, Tor conducting all required inspedlons, maintaining all records, and preparing and submitting the annual reports. Page 1 _ tr. ... ..~.ue.a... -- • .a../ 5~+s .v.-._. .„. L.s...-e .n.a.--.uL_ ..AU...- ~ ._il:adL1a.~(d!ad~ ra.s-Mr.~... .