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e <br />Enforcement Agency that an adequate supply of cover material will <br />be provided.10 EHD requires substantiation of an adequate supply <br />of cover material be provided to continue processing of the <br />permit. <br />Response to Comment on PDM Section B -5f <br />As mentioned above, cover will be used during winter months. The <br />table below shows the waste cell sizes and required cover for <br />these cells. The requirements for cover are shown for average, <br />peak and site operational capacity ASW volumes stated in A-3 of <br />the RDSI. <br />WASTE AND COVER CALCULATIONq FnR MVP VnWTI?AVTnuc <br />The estimated average monthly ASW volume is 1185 CY in-place. <br />Assuming the average waste cell size, 20 operating days per month <br />and the assumptions listed with the Table, approximately 200 CY <br />of cover will be required monthly. (This may be conservative in <br />that operation may likely involve less than 20 days per month.) <br />Assuming a cover requirement for 5 months out of the year, <br />roughly 1000 CY of cover soil will be required for winter <br />operation. Accordingly, a stockpile of 1000 CY will be <br />maintained by Cove Contractors at the site for this purpose. <br />Because the pit is already excavated, all future cover material <br />will be obtained from off-site. This will involve import of <br />5/ Based on conversion of 800 lb/cy. <br />6/ Surface area requiring cover is based on area of sides and <br />top of cell dimensions shown. <br />7/ Cover estimates assume .5 ft and 30% loss. <br />8/ Monthly averages based on 20 operating days per month. <br />15 <br />Cell Dimensions <br />Daily <br />H <br />W <br />L <br />CY Fill <br />Tons Fills <br />Surface Area' <br />CY Cover' <br />Average Day <br />4 <br />20 <br />20 <br />59 <br />24 <br />720 <br />17 <br />Peak <br />6 <br />40 <br />40 <br />356 <br />142 <br />2560 <br />62 <br />Capacity <br />8 <br />60 <br />60 <br />1067 <br />427 <br />5520 <br />133 <br />Monthly <br />4 <br />20 <br />20 <br />1185' <br />474 <br />8320 <br />200 <br />Average <br />The estimated average monthly ASW volume is 1185 CY in-place. <br />Assuming the average waste cell size, 20 operating days per month <br />and the assumptions listed with the Table, approximately 200 CY <br />of cover will be required monthly. (This may be conservative in <br />that operation may likely involve less than 20 days per month.) <br />Assuming a cover requirement for 5 months out of the year, <br />roughly 1000 CY of cover soil will be required for winter <br />operation. Accordingly, a stockpile of 1000 CY will be <br />maintained by Cove Contractors at the site for this purpose. <br />Because the pit is already excavated, all future cover material <br />will be obtained from off-site. This will involve import of <br />5/ Based on conversion of 800 lb/cy. <br />6/ Surface area requiring cover is based on area of sides and <br />top of cell dimensions shown. <br />7/ Cover estimates assume .5 ft and 30% loss. <br />8/ Monthly averages based on 20 operating days per month. <br />15 <br />