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~~ <br />t <br />li 1 <br />1 <br />i <br />1 <br />not be completed, according to our original schedule, until sometime in <br />January 1990. <br />Please refer to your item number 14 in your adequacy letter. In <br />that item you have allowed us to submit the design for the sedirtient <br />basin 60 days prior to construction. in recognition of your need to <br />have something bonded, we agree to commit to a bonding amount. We <br />suggest a bond amount of $6000 to cover the cost oP constructing the <br />sediment basin. If, after review of the plans, it is determined that <br />some additional bond 1s required, then the total bond could be <br />Increased prior to actual construction. <br />e. The culvert systems that have been proposed generally Include <br />culverts, entrance treatments, and exit treatments. The culverts are <br />of the sizes In Corrugated Steel Pipe (CSP) as Indicated. Entrance <br />improvements include end sections, concrete headwalls, shaping and <br />grading, and grouted rock as indicated. Exit treatments include <br />grouted rock riprap for varying lengths but in no case to the stream <br />channel at the bottom of the canyon. Well established natural <br />drainage ways exist in all cases below the outfall, however, s~~me <br />protection is necessary at some of the exits. <br />The Operator suggests a financial warranty Por culvert <br />construction in the following amounts. <br />Culvert System Amount <br />HR-1 $ 4,500 <br />HR-2 $ 3,125 <br />HR-3 $ 9,950 <br />HR-4 $ 5,350 <br />HR-6 $ 1,400 <br />HR-6 $ b,200 <br />Subtotal: $ 29,525 <br />10% Engineering & <br />Contingencies: $ 2,955 <br />TOTAL: $ 32,480 <br />f. We cannot determine whether the material to be removed from s~~me <br />areas will exceed the volume of materials needed to backflll other <br />areas. There are simply too many variables that need to be considered <br />to determine this with the degree of accuracy you are asking for. If <br />there is excess material then it will be processed into aggregate or <br />disposed oP in the quarry. It would be hauled a distance of about 1/4 <br />to 1/3 mile. Please keep in mind that economy dictates the proJecl. be <br />11 <br />