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f 7. The applicant states an office and shop will be utilized at the quarry. Because the office building is an existing structure, it may remain outside the permit area. However, the shop building will need to be included inside the affected boundary since it falls under the definition of affected land. Please revise the permit text and maps to include the shop inside the permit boundary. Please also be reminded that all mining related equipment, material and product must be stored inside the permit area. Rule 6.3.4 Exhibit D- Reclamation Plan 8. The applicant states that the proposed seed mixture will be doubled for seed drilling. Please note that the seed mixture must be doubled for areas that are broadcast seeded. Please clarify or revise the text accordingly. 9. Perdue provided information regarding noxious weeds in the surrounding area. Please describe the methods of weed control that will be employed for the various noxious weed species and the timing of such controls. 10. The applicant states that all existing roads and buildings will remain after quarrying is complete. a) [f the applicant intends to leave the shop building in place, the following items must be submitted to the Division; • ~ A description and location of each building and/or structure to remain on site. • The intended use of the building, and how leaving such structure will achieve the requirements of the proposed postminingland use. • The building must be included on the reclamation map. • A letter from Boulder County that states the shop building may be left in place to meet the zoning requirements and the approved postminingland use. • A notarized letter from the landowner identifying the desired buildings/structures to remain in place to achieve the end land use. b) If the applicant cannot meet any of the items noted above then the reclamation plan will need to be changed to demolish the building and included the reclamation cost estimate. The following information is required to determine the cost to remove the building; • Please specify the length, width and height ofthe building. • Specify if the material is wood, metal, brick or concrete. • Specify the dimensions of the shop floor including thickness and reinforcement of the concrete. i 1. The Division calculates the bond based on what it would cost the State using in independent contractor to complete reclamation. This includes a unit cost for backfilling, grading, topsoil application, seeding, and labor to complete the reclamation. The Division typically determines the point during the operation when the site has reached a point of maximum disturbance. In doing so, the Division must determine the unit costs for each task using the required volumes, haul or push distances and grade to backfill and grade the quarry. Based on the maximum disturbed area during the final pit closure, please address the following; a) Please provide an estimate of the volume of material (in cubic yards) of material stockpiled for reclamation. b) Please specify the haul or push distance for overburden material and topsoil material.