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"`r_-,~ <br />%' <br />CORDILLERAN <br />826 21 % Road <br />Grand Junction, CO 81505 <br />T: 970.263.7800 <br />F: 970.263.7456 <br />20. Per Rule 6.3.5(2) -Mine Plan Map: please outline and label the permit boundaries, label the <br />names of the owners of the surface of the affected area and the land within 200 feet of the <br />affected area, identify the owner of the substance to be mined, label features to be used in <br />connection with the mining operation (access road, soil and overburden stockpiles, waste rock <br />fills, impoundments and water diversions), and indicate the direction that material excavation will <br />proceed. <br />The Mine Plan Map has been revised to include the items discussed above. <br />Al! affected area and lands within 200 feet of the affected area are owned by the applicant, Chevron <br />Shale Oil Company. The substance to be mined is also owned by Chevron Shale Oil Company. <br />21. Please specify if the boreholes shown on the permit maps are existing, and if they are permanent <br />structures to be protected. Also specify if they are proposed features that are to be part of the <br />proposed reclamation. <br />The boreholes shown on the permit maps are existing. They are not permanent structures. <br />22. Per Rule 6.3.5(3) -Reclamation Plan Map: please indicate the area to be affected and subject to <br />revegetation applications, indicate the average thickness of growth medium to be replaced and <br />the replacement locations, and show details of the proposed pocking of the final slopes. Note - <br />With limited soil available for revegetation, it may be desirable to replace soil in the pocks and <br />concentrate revegetation efforts on establishing islands of vegetation rather than blanket <br />vegetation. <br />The Reclamation Plan Map has been revised to include the items discussed above. <br />Reclamation wilt begin by bringing the slope to fh to 1 v. The most reasonable way to attempt to reclaim <br />the site will be to use a track hoe to push down material from the top terrace down the face of the slope to <br />create a more favorable angle of repose. While the track hoe works back from the terraces it will create <br />pockets with its bucket to dissipate scouring from water erosion. These pockets will provide a collection <br />point for fine materials that will produce a more favorable seed bed. Pockets also increase the retention of <br />water on fhe slopes. Landscape materials salvaged during initial excavation of the site will be <br />mechanically and/or hand-placed to reinforce these pockets. Stockpiled salvaged topsoil will be <br />distributed across the pockets at a depth of approximately 2 to 6 inches. The size and frequency of the <br />pockets will be dependent upon the size and type of equipment used to create them. <br />We hope that this additional information will be sufficient to satisfy the DMRS requirements. Please <br />contact us with any additional questions, comments or suggestions you might have. <br />Thank you for your time and consideration. <br />Sincerely, <br />Amanda Jacobs ~~~ <br />Staff Scientist <br />Cordilleran Compliance Services, Inc. <br />Attachments as described <br />cc: Sean Norris, Chevron USA <br />Cordilleran file No. 5574 <br />Cordilleran Compliance Services, Inc. <br />Grand Junction, CO • Denver, CO • Casper, WY • Laramie, WY • Lander, WY <br />Environmental Consulting Engineers and Scientists <br />