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3 <br /> Project AM06A <br /> ;1~Design Assumptions <br /> <br /> ~<low from the tributary in subbasin AMHW-020 that enters the Martin Dr. pipe system at node 65344 along Marlin Dr. will <br /> ,be diverted through a newly constructed culvert and discharged to the historical open waten+way at the southeast comer of <br /> ~Ctnney Park. The flow will then be routed in a northwest direction through an enhanced riparian corridor and into Amazon <br /> 'ICreek. <br /> A trapezoidal shape was assumed for the open channel, with a bottom width of 2 ft. side slopes 1 to 1 and a depth of 5 ft. <br /> ?"i'he total length of the open channel was assumed to be 600 ft (measured from the aerial map). The new 42' CSP culvert <br /> Ihas a design capacity of i i 6 cfs. ' <br /> This CP would provide treatment of runoff from subbasin AMHW020 for water quality. <br /> .The TSS removal was estimated by multiplying the total TSS load by 0.8 (since the faality will treat 80% of the runoff) and <br /> ;then again by 0.6 (since the BMP used to provide treatment is expected to be approximately 609'o effective.) <br /> , <br /> a <br /> II <br /> I <br /> Note: 14?rert capital projects have beery selected by the City, a site map /ram the sewer index maps and the aerial maps <br /> wlN be Jnckided here. <br /> Page 3 <br /> <br />