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it going on top of the tall berm. The stockpiled overburden around the perimeter will serve to <br />mitigate the visual impact of the operation. Water will be used as needed to control dust. <br />In general, the nature of the deposit is as follows: <br />0 to 12 inches: Clay loam <br />12 to 17 inches: Clay <br />17 to 30 inches: Clay loam <br />30 to 38 inches: Gravelly clay <br />38 to 44 inches: Very gravelly clay <br />44 to bottom of gravel deposit: Extremely cobbly loamy coarse sand <br />The gravel is anticipated to extend approximately thirty-five feet below ground level. <br />Underneath the gravel deposit is a layer of shale. <br />During reclamation, overburden will be used for backfill material. Raw material will be <br />excavated using loaders and dozers and taken to the processing and staging area for crushing, <br />screening and storage. No explosives will be used during the course of the mining operation. <br />Sand and gravel will be stored according to size. <br />Loaders will be used to load product onto trucks, which will be routed to La Salle Road. <br />Approximately 75 to 90% of traffic will proceed east on La Salle Road to Highway 50. Trucks <br />will only travel west in the event of deliveries to the residential areas. <br />PROJECT PHASING <br />Once the existing Spring Creek Pit is played out, mining of the expansion site will occur. The <br />expansion site will be mined in five distinct phases, beginning with the southeastern portion of <br />the expansion area. These distinct Phases are shown on the Mining Plan as Phases 1-5. Mining <br />will start in Phase 1 and proceed sequentially through Phase 5. Starting with Phase 1 and being <br />typical of all phases, the phase will be stripped of topsoil and overburden as described above and <br />mining will begin starting from the south (the existing Spring Creek Pit) to the north. A tall <br />berm, equal to the depth of the gravel deposit, will be left in place on the northern side of the <br />phase. This will be left in place to mitigate visual impacts of the mine. The tall berm will be left <br />in place during mining for Phases 1, 2, 4 and a portion of Phase 5. As the Phase becomes mined <br />out and no longer needed for staging and processing the gravel in the tall berm will be removed <br />and processed. <br />The processing, staging and wash pond area for phases 1, 2, 3 and most of 4 will be located in <br />the previously mined area of the existing Spring Creek Pit. The processing, staging and wash <br />pond area for the remaining phase 4 and all of 5 will be located generally in the southeast portion <br />of phase 4. Haul roads will be relocated as needed with each phase of work. As each phase is no <br />longer used for processing and staging, reclamation will begin.