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-3- <br /> Page Specific Comments <br /> Page Comment <br /> 10 Changes to the plans require approval <br /> by the Department; changes shall be <br /> reflected in plan amendments within 60 <br /> days after the change occurs. <br /> 12 Specify the level down to which <br /> equipment will be decontaminated and <br /> how completeness of decontamination <br /> will be determined, e.g. swipe tests, <br /> etc. , on individual pieces of equipment. <br /> 15 The following comments pertain to the <br /> cover design: <br /> a. Design clay barrier layer (cap) to <br /> have a 3 to 10 degree slope. <br /> b. The regulations require a compacted <br /> soil cover layer on landfill <br /> closures. The PITC proposal is an <br /> asphalt cover. Demonstrate that the <br /> proposed asphalt cover will afford <br /> protection to the clay cap, that is <br /> equivalent to a compacted soil cover <br /> layer. If this cannot be <br /> demonstrated, add the required <br /> compacted soil cover layer between <br /> the asphalt and the geotextile <br /> fabric. <br /> C. Install a flexible membrane <br /> barrier, at least 30 mils thick, <br /> directly over the clay barrier <br /> layer. <br />