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r t <br /> 3 . The procedures for the removal of solids, blockage, and <br /> erosion from the drainage collection system was not addressed <br /> - Section 17778 <br /> Response: Additional statements addressing those concerns have <br /> been added to the plan report postclosure maintenance section <br /> on maintenance and monitoring. The cost for sediment removal <br /> has already been included in the estimate for drainage <br /> maintenance. Additionally, an item to inspect for sediment <br /> build up and sediment control devices were be added to the <br /> inspection section for the postclosure maintenance plan. <br /> 7. Run-off analysis for sheet and rill erosion was not proposed - <br /> Section 17779. <br /> Response: Run-off analysis has been added to the report as <br /> Appendix E. A narrative was also be added to the report to <br /> address postclosure maintenance impacts. <br /> 8 . The details of the construction and operation of the leachate <br /> control system have not been proposed. An evaluation of this <br /> system cannot be made due to lack of information - Section <br /> 17781 <br /> Response: The planned Leachate Collection and Removal System <br /> (LCRS) is further described as follows: <br /> A. A composite liner design which consists of a minimum 6 <br /> inch thick scarified and recompacted soil layer overlain <br /> by a 60 mil. HDPE liner. <br /> B. The recompacted soil layer and HDPE liner would be <br /> constructed under an approved CQA program. <br /> C. The soil layer overlain by the HDPE would be specified <br /> for recompaction to a permeability equal to or less than <br /> . 0001 cm/sec. <br /> D. Approval for the use of a composite liner is contingent <br /> upon the approval by the Regional Water Quality Control <br /> Board of a quality assurance/ quality control (QA/QC) <br /> plan for construction of a soil layer prior to <br /> construction. <br /> E. A dendritive network composed of 6-inch diameter <br /> perforated pipes installed in granular drainage material. <br /> F. A 10-ounce per square yard geotextile surrounding the <br /> granular drainage material. <br /> G. A 1-foot-thick soil operations layer over the liner and <br /> dendritive network. <br />