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Diversions and Impoundments <br /> The constructed French drain system diverts mounding groundwater from upgradient of the <br /> Timnath Connell Pit excavation to the downgradient recharge ponds. Although no diversions or <br /> impoundments are proposed, the northeast corner of the proposed amendment permit area is <br /> generally graded to drain towards the Weitzel Road extension to accommodate future storm <br /> sewer construction. In the southwest active mine pit area, stormwater that falls directly on <br /> disturbed areas generally drains to the mine pit floor and allowed to drain to the dewatering <br /> sump. The mine pit will effectively contain stormwater flows and prevent surface runoff from <br /> disturbed areas of the site. <br /> Material Processing and Associated Facilities <br /> An aggregate processing facility for product crushing and screening is located on the site and <br /> used as needed. The processing facility is located within the Phase 1 mine pit. Pit run material <br /> is hauled or conveyed to the processing plant where raw material and product stockpiles are <br /> located. Alternatively, raw material is hauled off-site as pit run for construction use. <br /> In addition to the aggregate processing facility, an asphalt batch plant is also in use on the site. <br /> The asphalt plant is located in the Phase 1 mine pit near the processing facility to minimize <br /> material handling and hauling distances. <br /> In association with the processing facility and asphalt plant, recyclable concrete and asphalt <br /> material is stockpiled within the Phase 1 mining pit. The recycled material is crushed and <br /> screened for use in aggregate and asphalt products. <br /> A mine office/scale house trailer and mine equipment maintenance building has been established <br /> near the I-25 Frontage Road site entrance. The office/scale house and maintenance building <br /> areas are used for employee parking, equipment fueling/lubricating, or equipment storage. <br /> No permanent structures will be established on-site as part of the mining activities. <br /> Maximum Mining Disturbance <br /> In order to gain a better understanding of overall mining disturbances, it is helpful to know the <br /> acres disturbed by different aspects of the mining operation. Each aspect is listed in the <br /> following table with associated disturbed area. The table illustrates a point in time where the <br /> mining disturbance could be at its maximum. At the Timnath Connell Pit site, it is assumed that <br /> the greatest mining disturbance will exist at the completion of Phase 3 mining. Currently, Phase <br /> 1 mining is complete. Although some backfilling has occurred and recharge ponds, floodway <br /> diversion berms, and a partial liner for the below-grade reservoir have been created, a portion of <br /> the Phase 1 mining pit is still being utilized for material processing. <br /> The Phase 2 mining is also complete. Unlike the Phase 1 mining area, the Phase 2 mining area <br /> has mostly been reclaimed. The area contains the Weitzel Road extension (released from the <br /> permit area with AR1, approval dated December 13, 2023) and the relocated Box Elder Ditch. <br /> Timnath Connell Pit <br /> DRMS 112 Permit Amendment Application Page 8 <br />