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Environment, Inc. Page 3 <br /> Ellicott Sand &Gravel LLC - M-2017-063 <br /> Adequacy response 02 <br /> 6.4.6 EXHIBIT F—Reclamation Plan Map <br /> Additional Information <br /> Map Exhibit F was revised to show the new 200 foot setbacks along Sanborn and 5. <br /> Baggett Roads in lue of providing the Geotechnical Stability Analysis at this time. <br /> 6.4.6 EXHIBIT G—Water Information <br /> 17. Affecting Drainages: Additional clarification required. The response references the new <br /> Bank Protection Plan included with this response. The DRMS reviewed the new plan and <br /> requires clarification to the following: <br /> a. Both the plan text and the Bank Armoring Plan figure(reference Note 2) call out <br /> asphalt fragments(or broken asphalt). As requested in Comment No. 2 above, please <br /> commit to not using asphalt product as bank protection. <br /> As noted in response to note 2, ESG will commit to not using asphalt fragments to armor <br /> the banks and to trim all exposed rebar from the concrete rubble. The text has been <br /> changed in the Mining Plan and Bank Protection Plan to match this commitment. I also <br /> fixed the notes on Map C-1, Map F and the Bank Protection Plan plat to removed the <br /> asphalt reference and add the rebar removal commitment. I also added one more note on <br /> Figure 1 in the armoring plan for keeping the armoring on the channel side ahead of <br /> mining. In doing this it reduces the amount of material needed to be covered by the bond <br /> to 820 cubic yards. <br /> b. The text in the plan indicates all the concrete will be larger than the D50. D50 is the <br /> median size rock in the armoring material. So by definition all the armoring material <br /> cannot be larger than the median size. Please clarify this statement. <br /> I changed and removed any reference to D50 since I seem to have a lack of understanding <br /> on that topic. Instead, we used a size range of 12 to 24 inches for the rubble sizes with <br /> an intermix of fines to fill the voids will be used. The material to be used is tear out <br /> from construction projects so the exact gradation may include pieces that are larger then <br /> this range in some cases. <br /> 6.4.12 EXHIBIT L—Reclamation Costs <br /> 20. Reclamation costs: The DRMS has verified your original reclamation cost estimate and <br /> agrees with the estimate provided in the original submittal. However, the September 9, <br /> 2019 response does not address the bond for armoring both 500 feet of pit side and <br /> channel bank. Based on RS Means,the armoring can cost between—$29 per ton for <br /> dumped rock and—$78 per square yard for machine placed riprap. If you commit to <br />