2024-08-13_REVISION - M1999050 (3)

Home Browse Search

Mr.Joel Renfro RE: Timnath Connell Pit M-1999-050 August 12,2024 6.4.12 Exhibit L—Reclamation Costs 4. The only foundation structures are under the asphalt plant silos. There are 12 caissons, each one 18 inches in diameter, and approximately 20 feet deep. These will be removed in their entirety when the asphalt plant is moved.However,to calculate reclamation costs it is assumed that the caissons would only need to be demolished two (2) feet below the final reclaimed surface grade (the asphalt plant is currently at the proposed final grade) at a cost of$500 per caisson. A revised reclamation cost table that includes the caisson removal is attached. All other structures on the site are portable and can/will be removed in their entirety. The scale house and scale are modular structures and the scales themselves rest on simple concrete slabs that can be picked up,moved, and reused. 5. Please see response to Comment 4. 6. In Exhibit L—Reclamation Costs, it is estimated that 3,000 linear feet of clay liner sitll needs to be constructed for completion of the below-grade reservoir. Based on the reservoir liner section presented in Exhibit F —Reclamation Plan Map, and a liner depth of 12 feet, the clay liner cross-sectional area is approximately 507 square feet. These estimates suggest that approximately 56,335 cubic yards of compacted clay material will be required for completion of the reservoir liner. The proposed reclamation cost in the application to complete the reservoir clay liner construction is $81,000. This cost was estimated from the applicant's expense per linear-foot for similar clay liner construction. Given the liner material estimate,the liner construction cost is $1.44 per cubic yard of liner material. It should be noted that costs associated with adding additional backfill on top of the clay liner are also included in the reclamation cost estimate. 7. It is anticipated that the equipment to construct the core trench and liner will include a Komatsu PC390 excavator,a Cat D6 dozer,a Cat 815 Padfoot soil compactor,water truck,and Cat 627 scrapers. 6.4.19 Exhibit S —Permanent Man-made Structures 8. Yes, CWH Properties LLC was notified and offered a structure agreement. The Property/Easement holders and Permanent Man-made Structures table has been updated to include CWH Properties LLC and a copy is attached. Proof of notification and offer of a structure agreement are also attached. 9. Copies of the transmittal letters and structure agreements that were sent to owners of permanent man-made structures within 200 feet of the affected area are attached.The structure agreements include the structure owner's name and structures to be included in the agreement, but the agreements are not signed and notarized by either the applicant or the structure owner. In addition to the transmittal letter, a copy of Exhibit B — Vicinity Map and an 11 x 17 copy of Exhibit C-5 —Pre-Mining/Mining Plan Map were included with the initial agreement offer. bIue earth Page 3of4 SOLUTIONS