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2-11 <br />storage pad areas are tested and if necessary. conditioned and compacted to achieve 1 X <br />10.5 cm/sec vertical hydraulic conductivity. Soil sampling for ammonia, nitrates, meta ls and <br />trace organics could be Gondueted to confirm the lac l~ of movement of these constituents. <br />Given tho slo'N annual movement of ground'Nater at this site, soils could be removed and <br />disposed of jf movement of pollutants was found through so il monitoring. <br />2.1.7 Leachate Control (14 CeR, Section 17867(a)(12)) <br />If IeacAate genOFation is expected, plm1de a schematic drawing of the leachate collection <br />and mmoval sjstem. If neeessaf}~ indicate the location of drainage blankets, piping, <br />drainage swales, collection po/nts, etc. <br />Describe the method olmonikJring, col/ection, troatment, and disposal. <br />Note: (1) Faeilities that yse amenrifr:Jents or additives in thek composting operations shall <br />incll:1€le in thek acti~'O compos#ng aroas a compost leachate management control system, <br />which is designed 10 contain and collect twice the anticipated volume al compost leachate, <br />and the precipitation from a 25)'ODf, 24 how rainstorm e~'Ont, and <br />(2) Shall ha~'O IeacAate holding facilities with a liner with a permeability of no greater <br />than 1 x 1()6. cfR/sec, which is constructed of a thickness and type of material that is <br />msistant 10 damage due to 1~'ODther or machinef)~ other standard al/m'l'Od in writing by the <br />regional board. <br />Since additional water will only be applied to the compost when necessary for maintaining <br />adequate internal moisture, significant leachate generation is not antiCipated. As stated in <br />Section 3.5.3, the site is in a region of net evaporation. Additionally, compost windrows <br />typically form a light crust on the outside, which repels rainfall. The site's drainage control <br />system was designed to handle all runoff from a 25-year, 24-hour storm, including runoff <br />from the compost piles. This system is illustrated in Figure 6+6 and designrunoff <br />calculations are attached in Appendix QB. <br />a. Leachate Barriers <br />if leachate barriers am proposed, describe their length, Width , depth, and design <br />characteristics. <br />There are no leachate barriers currently proposed for the site. <br />b. Leachate Barrier Locations <br />Show the locations of leachate barfiers on the plot plan. lndicate whether leachate barriers <br />afO in place or to be installed. <br />There are no leachate barriers currently existing and/or proposed for the site. <br />c. Monitoring and Sampling Procedures <br />Describe monitoring and samplingproeedures. <br />There are no leachate monitoring and sampling procedures proposed for the facility. Runoff <br />will be collected in a sedimentation basin retention pond located in the southwest corner of <br />the site. Runoff will be sampled and monitored to meet pretreatment requirements or the <br />site's Storm Water Pollution Prevention Plan and Storm Water Monitoring Plan depending on <br />final disposal of collected water. <br />Forward Composting Facility SWT Engineering <br />Report of Composting Site Information -May 2014 <br />z:\projects\all ied waste\forward V esource recovery facility\5 yr permit rvw 2013·14\rcsi 2014\text\se c 2 · revtr .do c