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Aggregate Industries, Morrison Quarry Amendment No. 7 to Permit M-1973-021 Morrison, CO October 2021 | 33 Testing for in-place density and moisture content will be performed in accordance with ASTM D 6938. Testing will be performed by the operator (or their subcontractor) on a frequency of one test for each lift of fill placed. Rough grading in un-mined areas shown in Exhibit F.1 through Exhibit F.3, such as the processing plant and haul roads, will be sufficiently ripped down to 18 inches, re-graded, and scarified prior to topsoil placement and revegetation. A D-5 up to a D-9-sized bulldozer with rippers will be used for all site grading. Structure Removal Permanent structures to remain on site following reclamation will include stormwater drainage infrastructure, perimeter barbed-wire fencing, maintenance access roads, a holding tank east of Reservoir Site II, and a utility shed south of Reservoir Site II. These features are shown on Exhibit F.1 through Exhibit F.3. The holding tank and utility shed are considered necessary for post-mining use and continued maintenance of Reservoir Site II by the Town of Morrison. All other structures not shown in Exhibit F.1 through Exhibit F.3 will be dismantled and removed from the site prior to final grading and reclamation. These include, but are not limited to, the following structures: • Main Processing Area Equipment (conveyors, crushers, etc.) • Mine Administration Offices • Road Base Processing Plant in South Quarry • Fuel Storage Area in Central Quarry • Haul Roads and Parking Areas • Truck Wash and Tarping Area on Main Access Road • Dewatering Wells, Communication Towers, and Other Site Utilities Areas where these structures are constructed will be cleared of debris following dismantling. Debris will be sent to a licensed landfill facility for disposal. Each area will then be graded to surrounding topography and revegetated according to the requirements of the section titled Revegetation. Exhibit L – Reclamation Costs provides costs for dismantling and demolishing structures. Revegetation Revegetation will be performed approximately on a yearly basis, preferably in late fall (November), for any area that has been backfilled, graded, and shaped. Typical acreage having undergone hydroseeding in a given year is between 1 and 5 acres, based on work completed to date. This may include acreage that has previously been seeded, but which has required overseeding for continued maintenance. Seeding with a native grass seed mix will be performed by the hydroseeding method. This method allows for seeding on fairly steep slopes; provides complete coverage; and combines