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TETRA TECH <br />Page 4 of 8 <br />Mr. Jared Ebert <br />October 16, 2009 <br />now slightly enlarged to include all structures associated with the plant site, will <br />remain an industrial area as the post mine land use. This industrial area will <br />continue to operate as it currently operates following the mining of 35`h Avenue; it <br />will just process materials from other Lafarge mine sites in the area. We have added <br />a paragraph to Exhibit E to reflect the changes to the Reclamation Plan from what <br />was originally approved. <br />11. Is the 53 acres of industrial land zoned for this land use? In accordance with Rule <br />6.4.5. in instances where the post mining land use is for industrial, residential or <br />commercial purposes and such use is not reasonably assured, a plan for revegetation <br />must be submitted. Please submit a plan to revegetate this site. It is likely that this <br />area will need to be ripped, topsoiled and seeded to be revegetated so your plan <br />should reflect such. <br />There is an approved USR permit with Weld County which allows for the plant site <br />uses that are currently operational at the 35`h Avenue Mine Site. Attached is a copy <br />of the Resolution of Approval from the County. The property will not be revegetated <br />following mining and reclamation of the 35`h Avenue property because it will <br />continue to be used by Lafarge as a plant site. The USR permit does not limit how <br />long the property can be used for this purpose. <br />12. Please provide a list of all the permanent man-made structures (buildings, roads... <br />etc.) that will remain on the site after the site is reclaimed. Please ensure these <br />structures are displayed on the Reclamation plan map. <br />All permanent structures on site can be found in the area identified as "industrial" <br />and all of them will remain on the site. When we follow-up later to provide you with <br />the topographic information for the entire site, we will also verify that all structures <br />to remain in this industrial area are shown on the Reclamation Plan map. <br />6.4.6 EXHIBIT F - Reclamation Plan Map <br />13. In accordance with Rule 6.4.6 the map must show the proposed topography of the <br />area with contour lines of sufficient detail to portray the direction and rate of slope of <br />all reclaimed lands. Please include this information on the reclamation plan map. <br />This information is currently unavailable. We are acquiring it and will follow-up to <br />provide this information to you as soon as possible. <br />6.4.7 EXHIBIT G - Water Information <br />14. The division could not locate a map that showed the location of the 14 ground water <br />monitoring wells. Please submit a map with the location of these monitoring wells <br />clearly displayed. <br />There are actually just six wells on this site; the other eight wells are on other <br />properties adjacent to this site that Lafarge is considering permitting in the future. <br />The six well locations have been added to the Exhibit C map.