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10/10/91 10:08 I 366 7013 SACRAMENTO _tj005/018
<br />Daily and intermediate cover will be used only during winter months to decrease the amount of
<br />rainwater infiltration. Daily cover is not proposed during the summer because ASW and inert
<br />waste are not putresible. Additionally, it is not anticipated that dust generation will normally
<br />be a problem. If litter or dust becomes a problem during windy periods, daily cover will be
<br />applied.
<br />Although daily cover is not proposed for dry weather months, it will be applied during wet
<br />weather periods to provide a surface to direct storm water which falls on waste in the pit to the
<br />storm water removal sump in the west side of the pit (see comment J-1). The table below
<br />shows the waste cell sizes and required cover for these cells. The requirements for cover on a
<br />daily basis are shown for average, peak and site operational capacity ASW volumes stated in
<br />A-3 of the RDSI.
<br />WASTE
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<br />COVER CALCULATIONS FOR COVE CONTRACTORS*
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<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 />Average
<br />4
<br />20
<br />20
<br />11851,
<br />474
<br />8320
<br />200
<br />The estimated average monthly ASW volume is 1185 CY in-place. Assuming the average
<br />waste cell size, 20 operating days per month and the assumptions listed with the Table,
<br />approximately 200 CY of cover will be required monthly. (This may be conservative in that
<br />operation may likely involve less than 20 days per month.) Assuming a cover requirement for
<br />5 months out of the year, roughly 1000 CY of cover soil will be required for winter operation.
<br />Accordingly, a stockpile of 1000 CY will be maintained by Cove Contractors at the site for
<br />this purpose.
<br />(1) Monthly based on 20 Operating days
<br />(2) Based on conversion of 800 lb/cy
<br />(3) Surface area requiring cover based on area of sides and top of cell dimensions
<br />shown
<br />(4) Cover estimates assume .5ft and 30% loss
<br />Page 4 of 10
<br />copyright 1991 Kleinfeider, tne.
<br />KLEINFELDER 3077 Fite Circle, Sacramento, CA 95827 (916) 366-1701
<br />
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