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a DSO of 6 inches. Design information for the rock riprap is presented in <br />Addendum 13-lOB. A typical cross-section of the low-water crossing is <br />presented on Figure 5. <br />The July 18, 2007 CDRMS Inspection Report also requested that Seneca <br />provide a plan to improve drainage of existing seepage to the <br />reconstructed channel section. The location of the seep is shown on <br />Figure 5. Field observations indicate there are two drainage courses <br />currently conveying seepage into the channel section. Seneca will <br />construct a French drain immediately down gradient of the seep to collect <br />the seepage and route it to the channel section. The French drain will be <br />a two-foot deep by two-foot wide trench, excavated along contour and <br />filled with rock with a DSO of 6 inches. A Marifi geosynthetic fabric will <br />be placed over the top of the drain rock with a minimum overlap of 18- <br />inches. A typical cross-section of the French drain is presented on <br />Figure 5. The drain and surrounding barren area will be covered with a <br />suitable growth medium material. <br />The reconstructed drainage channel section and the seepage repair area <br />will be reseeded with Seed Mix No. 3 (Alkaline lowlands mixture). <br />• <br />• <br />TR-36 13-10-8 Revised 08/07 <br />