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2023-09-25_REVISION - M2005021 (3)
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2023-09-25_REVISION - M2005021 (3)
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Last modified
9/26/2023 8:47:59 PM
Creation date
9/26/2023 8:33:13 AM
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Template:
DRMS Permit Index
Permit No
M2005021
IBM Index Class Name
Revision
Doc Date
9/25/2023
Doc Name
Request for Technical Revision
From
oldcastle SW group inc. dba United Companies
To
DRMS
Type & Sequence
TR2
Email Name
RDZ
MAC
AWA
Media Type
D
Archive
No
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Mining Plan Exhibit D <br /> 1 . General Mining Plan <br /> The property boundary has been surveyed on site and the permit area will be surveyed prior to any <br /> site disturbance. Map C-2 shows the mining plan. <br /> The gravel zone is approximately 40 feet thick in an alluvial deposit. It is overlain by 2 inches of <br /> topsoil and overburden ranging from 4 to 15 feet thick. In general, the area will be mined by first <br /> excavating soil/overburden with front end loaders, dozers, or other appropriate earth moving <br /> equipment. This material will be stored for use in reclamation, to backfill slopes, and to build the <br /> peninsulas and potential island. The topsoil and overburden will be stockpiled separately on the <br /> site. Any stockpiles to be in place longer than 90 days will be seeded and vegetated to prevent <br /> erosion. The reclamation plan depicting how these materials will be used is shown on Map F-1. Due <br /> to the abundance of overburden at the Anderson property, it is feasible to build the peninsulas and <br /> island with this excess material. It should be noted that the peninsula configuration depicted on Map <br /> F-1 is approximate and may vary when executed. Exhibit E addresses more on reclamation and the <br /> construction of these peninsulas. <br /> Resource extraction activities are expected to occur for 3 to 5 months per typical year. However, <br /> processing of materials will occur year-round. Processing activities include crushing, screening, <br /> washing, and producing concrete and asphalt. Mining will proceed roughly from north to south, as <br /> the order shown on Map C-2. The order of mining and size of new mining areas may vary from what <br /> is depicted. <br /> Mining will occur to the limits shown on Map C-2 with appropriate setbacks from structures and <br /> easements. Disturbance boundaries will be staked prior to mining in new areas. The total <br /> disturbance will be 224.5 acres. Mining will proceed to 2 feet above the bedrock, and will have an <br /> approximate active slope of 0.5H:1V to near vertical to maximize gravel recovery. Highwall mining <br /> at this slope will progress to the mid-slope point of the final mining slopes shown on Map C-2. This <br /> will allow for the highwall to be knocked down via dozer to a 2H:1 V slope. The highwall will then be <br /> backfilled with excess overburden to the reclaimed 3H:1V slopes, and peninsulas will be <br /> constructed. Slope details are shown on Map C-3. <br /> The maximum permitted tonnage to be sold from the Anderson Pit is 378,750 tons. However, <br /> typical annual production is estimated to be around 252,500 tons. The raw aggregates will be sold <br /> for use as construction materials such as concrete, asphalt, road base, etc. The anticipated <br /> production breakdown is shown below: <br /> Product Tons Sold % Reiect Rate Tons Mined <br /> Road Base 200,000 0% 200,000 <br /> Concrete 37,500 10% 41,667 <br /> Anderson Pit <br /> September 2023 D'1 Lewicki&Associates <br />
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