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<br />• <br />- 13 - <br />similar to the one described for Pond 1, exc_nt a transverse drain cipe <br />should be used instead of a lon;itudinal one. T}~pical requirements for <br />cutoff trench and toe drain installa*_icn arc creter.ted on emban~.r:ert <br />section Fias. 4A, SA and 6A. <br />Spillway: Thc- sFillways sass wcr the cahanY_^ent en .sll tnrce dns. <br />The downstrea^~ faces beneath s^~illway any cutlet ~.~r~rl:s should be we 11 <br />protected with slope ,:attress cr riprao tc prevent erosion. 'Phe <br />channel should be carried beyond the toe of the dart, so that over`l~i <br />will not cause erosion of the orhan~-~nt or the natural sc+iis i~¢^e- <br />diately downstrea~,. Minor settlement which .^..ay occur within the <br />spillway can to handfed by rcnelial construction. <br />[:P1EA:1::',C[I_ JL'SIGT1 - S%JI:IEfP.'ATI^..i EY~'[:U 5 <br />Proposed Construction: Tne location of Pon] 5 is shoran on Fig. 1. It <br />has ~n ~'IGVe'~ downs trc'`a,'.1 several huridred feet fro^ lt5 ~'rCV lOU", <br />location discussed Ln our earlier reDOrt. Tne site conditions are <br />essentially the saae as those discussa~i previously and rensist of a <br />steep-sided, narrow draw about 1,000 feet downstream frrn the :ratershed <br />divide. On Fia. 7 is shown a plan view of the dam as well as locaticn <br />of the new test holes. Test [tiles 29 through 33 represent the subsoil <br />conditions at this site. The dam :gill have a crest lennth o: <br />approxir.~,ately 400 feet and a riaxim~ height of about 54 feet. The <br />drainage area above the day is less than 60 acres. '*'l-,e srXllwa}' <br />. elevation is 7620.0 feet, arri tahe maximum water surface is 7621.9 feet, <br />impounding approximately 12.f3 acre feet. <br /> <br />