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<br />SPECIFICP,TIQMS TO GOVERPI TIIE COh~STP,UC1~1~f! ~F A ~EDI~~E„.,,, .,:999, .,+,Ir
<br />Prepantlen of Foundation for Dam-All veCr:table matter n1 every description, including roots to a depth of two
<br />feet, shell be removed from the entire area upon which the dnm wr!1 rest, together with UoCCY or unstable materials
<br />and deposited outside the toes of the darn. The banks of the stream channel shall be dressed to a slope oL about l+.~r:l.
<br />A bonding trench, with slupmg sides and a bottom w+dth of nut Icss than 5 feet and depth of 4 feet, shall then be
<br />excavated beneath the center line of [he dam the full length thereof, whicb trench shall he refilled with the most Imper-
<br />vious materials available. The foundation of the darn shall then be lightly plowed lengthwise of the dam, to provide
<br />proper contact between the foundaticn and the d:~m embanluneut.
<br />Plaelnt of Lam Embankment-The materials shell 1+e Vlaced in the bonding trench and in the embankment o[ the
<br />dom In layer ncl exceeding 6 mchrs in Ih+ckness, rifler which each layer shall he thoroughly compacted 6y a heavily
<br />boded disc, cultivator, a corrugated or sheep's b:..t culler, the treads ..f n caterpillar or trucks, or by livestock used in the
<br />construction. During the canstructwu prnnd, the lop of lhr. eu,b;,nkment shall be maintained as a horizontal plane the
<br />full width end length thereof, and no side dump+ng o[ materials shall 6e penmtted. The materials shall at all times
<br />contain au(fic+enl moist are to provide proper compacliun. Puddling of material with water shall not be permitted.
<br />No frozen material or large clods or stones shall be uceorpurateJ w the dam. The upstream face of the dam shall 6e
<br />Constructed with a slope riot steeper than 'L u~:1, and the downstream [ace on a slope not steeper than 2:1. The crest or
<br />lop of the finished dam shall he riot Icss than 8 feet in width.
<br />The upstream two-thirds of the darn shall be construcicd or the roust intperv l~W materials, such as Clay loam, or a
<br />mixture of clay and sand, and the downstream cnc-third of more pervious material, such as sand or grave]. The up-
<br />stream face of the dam shall be adequately protected against wncc acuon by stone riprap, or other suitable materials
<br />when required.
<br />Outlet-Should the state engineer sn require, there shall be located beneath the dam an outlet pipe not less then B
<br />inches in diameter, equipprd with a control vah•c atTachrd to the upstream end of the pipe, together with suitable
<br />mechanism for operating the cnlvc. Such outlet pipe shall be prnvuled with cutoff collars. The pipe shell be placed In e
<br />trench bottomed in stable fu~mation, and shall be completely surrounded with well compacted impervious materials.
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<br />Mirlr^ (ni..~i~ Rrl:'LP(4'?/`TION
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<br />MAxIMUM CROSi-SCC TIUrJ OF DhM
<br />Note: Pond embankment to be constructed irl accordance
<br />with these plans and specifications, undar the
<br />supervision of a registered professional
<br />engineer.
<br />Examined for structural weakness and erosion upon
<br />completion of ocnstruction ant9 after. each major
<br />storm event:
<br />Removed, regraded and renegotiated upon abandonment
<br />borrow Pltr-Pita, Irom whrch materials are taken In build !hie dam, shall be clearM o1 sll vetetaDle mNter, and
<br />no material shall be Gorruwcd w+thin a distance of 50 feet or any port of the dam. MaferiaU excavated from the apfll-
<br />way, when suitable, may be used In building the dam.
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