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<br />I. <br />Ie', <br />I ~~. <br />I <br />I <br />I <br />I <br />I <br /> <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I-- <br />I <br /> <br />PlATES <br /> <br /> <br />104. Plate 1. Why is the pilot CluoftN!1 aJlp""'" above SIaIioo 48 +00 east of the _1m", <br />low groWld? It Appears from tU msppm, that m tdd~ 5 to 9 r.. of cut i& mvoMd <br />by JlOt followiDa !be low around. 11Ie I''''~ for avoiltiD& the low areas, jf ODe exists, <br />shou1cI be staled in the report. If rile a1i~ as sIlowD IIIISt be followed, tbeD roDJWr <br />0111: or a combination of tile sectiom Ittarbl'd (see F'J&lftS 1 8Dd 2) to reduce excavatioD <br />quantities and reduce the quantity of ma1eriaI disposed of in the ova-bait. AdditioIIIIIy, <br />die portioDs of tbe excav:llion that are h1plhan lbI PlaIt 3 PfOP<*lCl sectioa. could be <br />decp-lil1ed parallel to the alipmem to fr..c.lu... die &Oil stnIemre lilli, bopetuJJ,y, acc:eletllB <br />tile sc:ourina of !be chute. 'f..L L j? <br />/1" ,"<.. . <br />105. Plate 1. Spoiled material should be placeclas pml1d 10 oYelbaDk OowliDes IS much <br />lIS possible to reduce impacts to flood profiles. AI sbowD,!be spoil material will probably <br />block more of the effective Oow area than modeled in BEC-2. UDless the HEC-2 elect was <br />set up to exclude a large portion of the floodplain from COIlVeyux:e. However. sinI:e tbis <br />HEC-2 deck was DOt submlmd for review, this CIDIlOt be ucertaiDecl. <br /> <br />106. PlaIe 2. Does riprap on iDJr.r smlcture need Iin exIInI fill' 400 feet? 'I'weIII1 feet <br />beyoDd the eontlOl struetme would be sufIicieat. 'Ibis would zeduce riprap quaDtities <br />somewhat. Does riprap DCCd to be 4.S feet 1bick oYer 5lIdl a loD& clistaDCe on the bed? <br />'l1le riprap OD tile up- and down-sloped mas could protlIbly be 3 teet dIk:t without <br />reduciq effectiverresa. This would also reduce riprap qm~. <br /> <br />107. Plare 3. RecommeDd limiting disposal material IIIOIIIId to DO IIl<n than what was <br />modeled, prefembly 4 feet <br /> <br />108. Plate 4. See commeuts OD Plate 2 (c:ommeD1 104 ~). <br /> <br />109. In order to acceletate the meaJIderiJg of the pilot clulft....~. consider pJacjq I full <br />~ntfer in the aligJI"""" downstream of the inlet struclIIre and grade CODIrOI 8ttlICQIre IS <br />SlloWD OD attadled figure 3. 1bis ~~ palIml IIbould emI1lII11y IDigrldc duwulUawl <br />and develop meaDderiDg more quickly than IS presemly .lliptd. tbs will be ~'stsed at <br />!he conference caJI. <br />