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• Graders <br /> • Excavators <br /> • Electric control van <br /> • Backhoes <br /> • Asphalt plant and highway trucks <br /> No permanent structures will be built within the mining area. All production facilities and <br /> equipment will be portable. United Companies will provide portable toilets and bottled water to <br /> employees on site during operations. Any fuel stored on site will have full secondary <br /> containment that can carry 110% of the fuel tank volume. All facilities will be removed during <br /> reclamation. Explosives will not be used or stored at the site. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil is roughly 12 inches thick atop a 15 foot deep overburden layer. Topsoil and overburden <br /> will be stripped prior to mining using appropriate earth moving equipment. The equipment that <br /> may be used for stripping includes front-end loaders, dozers, excavators, scrapers, and water <br /> trucks. Topsoil and overburden will be stockpiled separately in various stockpiles throughout the <br /> site for use in reclamation. When possible, it will be directly placed on areas being reclaimed. <br /> Stockpiles that will be in place for longer than 90 days will be seeded with the permanent seed <br /> mix to prevent erosion (see Exhibit E for seed mix). <br /> Table D-2 shows the material balance based on the average topsoil and overburden <br /> thicknesses described above. These volumes account for the estimated topsoil and overburden <br /> stripped from all three pods. The old Camilletti area is mined out, and has been backfilled, <br /> graded, and topsoiled. Pod 1 is nearly mined out, and thus most topsoil and overburden <br /> stripping has been completed in that pod. The material necessary for reclamation of any existing <br /> disturbances is already stockpiled on site. <br /> Table D-2 Topsoil and Overburden Material Generated During Mining <br /> Material Generated (CY) <br /> Topsoil 222,479 <br /> Overburden 2,447,265 <br /> Stockpiled material will be used to achieve the final grading shown in the Exhibit F reclamation <br /> maps. Overburden will be used to backfill and grade the pit slopes to their final conditions. Any <br /> excess will be dispersed and graded across the pod floors and used to create aesthetically <br /> pleasing reclaimed slopes. Topsoil will be used to augment the replaced topsoil on all disturbed <br /> areas and slopes. Topsoil will be replaced in a single 12-inch lift across these areas. <br /> 5. Water Information, Rights, and Augmentation <br /> All water rights issues such as availability of water for this operation, consumption rates, dust <br /> control, etc. is presented in Exhibit G —Water Information. <br /> Hayden Gravel Pit <br /> December 2022 D-4 Lewicki 81 Associates <br />