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1 <br />1 <br />N0. 1 - Figure-1 is a larger scale schematic of the drainage plan <br />(Alternative II). The details of the channel construction are provided <br />in Figures 2 and 3. The schedule of construction is presented :in Section <br />II-A of this report, <br />' N0. 2 - All property in the immediate vicinity of the proposed quarry <br />area is owned by the applicant. <br />' N0. 3 - The calculations on the channel design are presented in Appendix <br />B and summarized on Figures 2 and 3. The channel has been designed with a <br />' maximum 100-year velocity of 5 fps to minimize erosion potential and to <br />r--- <br />promote silt and sediment deposits within the quarry area. <br />~--r- <br />' N0. 4 - The computations for the detention pond are presented in Appendix <br />B. <br />N0. 5 - A riprap stilling basin is provided at the outlet to dissipate <br />' the energy, and a siltjsediment area is provided at the inlet of the culvert. <br />This area will require periodic cleaning. <br />' N0. 6 - Drop structures are not required for the alternative plan as <br /> present ed herein. <br /> N0. 7 - Figure-1 delineates the drainage requirements as the prospective <br /> mining progresses. <br /> <br /> N0. 8 - WRC, Inc. discussed the contents and format of this report with <br />t the Ass <br />mation istant County Engineer who was in gene <br />erl <br />ro <br />addresses the concerns of the ral agreement that <br />count t:he infor- <br /> p <br />p <br />y y. <br />' N0. 9 - Comments not related to drainage. <br /> <br />'J <br />' -4- <br />