2019-03-18_REVISION - M2010036 - Laserfiche WebLink

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We hereby acknowledge receipt of the letter from History Colorado. Should human remains be discovered during mining activities,the requirements under CRS 24 80, part 13 shall be adhered to. EXHIBIT C—Pre-Mining and Mining Plan Maps) of Affected Lands (Rule 6.4.3): 4. In accordance with Rule 6.4.3(g), please show the owner's name,type of structure, and location of all structures contained on the area of affected land and within 200 feet of the affected land. The pipeline owned by Tallgrass Energy is identified and labeled on the Exhibit C — Site Map, however the Division observed an overhead utility line located in the southwest portion of the site which is not. Additionally,the owner of County Road 1 and County Road 3 is not labeled nor is the County Road 16 identified and labeled. Please revise the Exhibit C—Site Map and resubmit it for further review. The Exhibit C- Site map has been revised and is attached. The revision added the overhead utility line in the southwest area and references County Roads 1,3, and 16 as structures lying within 200. 5. The Applicant appears to be proposing a mining plan with a 200-foot buffer on the inside of the west permit boundary, a 130-foot buffer on the inside of the north permit boundary, a 130- foot buffer on the outside of the east permit boundary, and a 200-foot buffer on either side of the Tallgrass Energy pipeline. Please clearly identify all of these areas on one of the Exhibit C maps. The Division requests the Applicant clearly delineate the buffer areas by using a cross-hatching or other means on the map. The buffers, as defined above, are highlighted on the attached revised Exhibit C—Site map. EXHIBIT D -Mining Plan (Rule 6.4.4): 6. Please provide further detail regarding the potential on-site processing as mentioned in Exhibit D. Since the majority of the material is being used to make concrete,the possibility exists that material might be screened at the site. To date, that hasn't happened. 7. Since the Operator intends to continue to operate as a phased mining/bonding approach, please commit to contacting the Division for approval prior to disturbing any new tracts. The request shall include the estimated reclamation costs that would be required for opening the additional tract. The Division will review and calculate a new Finical Warranty amount, issuing a Surety Increase revision if necessary. Once the additional amount is posted the Operator will be approved for the new tract. We are committing to contacting the Division for approval prior to opening any new tracts. Said request for approval will include an estimated reclamation cost for opening that tract. Mining will not begin until Financial Warranty has been approved. 2 1 P a g e