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3.) Please see Figure "A" under Attachment "C" that shows the placement and location of the constructed slurry wall in a detailed cross-section, as well as details of the backfilled slopes of the mined pit-walls. This same detail was provided, with somewhat less data, on the original Exhibit F-Reclamation Plan Map. The location of the slurry wall is also shown in plan view on the revised Exhibit C and revised Exhibit F maps under Attachment "B". The slurry wall will completely encircle the rectangular mining area of this permit application and be constructed prior to mining, as is shown on revised Exhibit C. The slurry wall will be excavated and constructed utilizing proven technology and methods and accepted current industry standards and equipment. Along-arm backhoe capable of reaching the required depth of between 30 ft. and 35 ft. will be utilized to excavate and emplace the bentonite slurry mixture to a minimum depth of at least 3-ft. into the shale bedrock with a 30-in. width. A portable mixing station will follow alongside the backhoe, mixing the excavated material with a sealing, cementing, bentonite slurry. The entire process will be overseen by a quality control team, who will ascertain that the design and physical emplacement of the slurry wall will ensure its success. Quality control of the bentonite slurry will be constantly maintained by the testing and correction, if necessary, of the slurry and additives. The final approval and success criteria for the performance of the slurry wall to seal and isolate the reservoir-storage from the surrounding alluvial aquifer lies with the State Engineer of Colorado. Certain performance criteria will have to be met post- construction of the slurry wall and filling of the reservoir(s) to satisfy the State Engineer that the reservoir(s) and slurry wall are functioning as designed and approved. Attachment "D" contains the Colorado State Engineer's design criteria, construction and performance standards, that will have to be satisfied in order for the proposed water-storage reservoir(s) to function as designed and utilized. A summary of the changes placed on the revised Exhibit F are as follows (a) Reclamation topographic contours shown from the mined shoreline areas to the base of the excavation (reservoir base). (b) The location of the slurry wall. (c) The location of the 24 in. diameter gated reservoir conduit pipe optionally linking the two reservoirs, and (d) Revised date of the Exhibit and blue-ink signature of the designer. ~~ ~ 4.) The affected area of the proposed access road from Weld County Rd. 18 leading to the permit area has been incorporated into the permit boundary of the application for the Ft. Lupton Sand and Gravel Mine by a map revision to both Exhibit C and F. These map revisions were faxed to you and placed for public review at the Weld County Clerk to the Board's office on January 26, 2000 as part of the permit application. The Clerk to the Board signed an affidavit confirming the placement for public review and a copy was faxed to you. The posting of the property and newspaper publication of the Notice had already incorporated the access road as part of the legal description. In the approved time-frame for the newspaper publication and comment period, the only other affected property owner within 200 ft.