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<br />,( <br /> <br />Collins r: <br />. ~'I <br />'\.~'\"""LiPPis ~ ; <br />Butt~rw h:' <br /> <br />(Colo) Local ,r4~' <br />lu~tb <br /> <br />..l <br />" <br /> <br />Metal Stoplogs for the Las Animas <br />Protection Project <br /> <br />SWACO-OP <br /> <br />Cll, Engrg Div. <br /> <br />Ch, Const-opns Div. <br /> <br />24 January 1979 <br />Collins/mdm/2722 <br /> <br />1. The Las AniJ:las Local Protection Project vas completed 17 June 1978. The <br />design L~cluded a stop-log closure structure at the Santa Fe Railway crossing <br />near the west end of the levee. The stoploga are treated timbers, but have <br />already warped and checked excessively, to the extent that proper placement <br />in the near future is doubtful. <br /> <br />2. A trial erection of this closure structure was required, and vas done on <br />25 July 1978. Messrs. Schwalbe and Volturo, Trinidad ResO observed, and <br />commented: <br /> <br />"Anticipate varping - in some caseS as much as 1,;" (additional) warp <br />will cause jamming of the stoplogs for installation." <br /> <br />"Aluminum Stop logs were suggested - they would be more expensive but would <br />not have to be replaced periodically, <br />and could be handled by 2 persons, and <br />would seal tighter." <br /> <br />3. Design of the Holly (Colorado) Local Protection Project i8 now complete and <br />includes two stoplog closures, One across Highway 50 and one across the rai1road. <br />Doth structures will employ galvanized steel stoploss, fabricated from 14 gauge <br />rolled channel sections. This current deSign seems highly desirable over the <br />timber stop log concept used at Las Animas. <br /> <br />4. It is requested that 3 third set of steel stoplogs be furnished as a separate <br />bid item in the Holly contract. They are to be furnished to the Las Animas Local <br />Protection Project sponsor, (the Arkansas River Conservancy District), to replace <br />the timber stoplogs. It is further requested tlUlt delivery of the Las Animas <br />steel stop logs be made not later than 90 days after contract award, to provide <br />reliable flood protection in the 1979 season. <br /> <br />5. Funds in the amount of $6,000.00 appear to be avaUable in the Las Animas <br />Colorado Local Protection Project (BE~~I) as shown in the 31 December 1973 report <br />for Status of Appropriations and Work Allowances (3011). <br /> <br />6. TIlis matter has been verbally coordinated between Frank Collins, Opus, <br />Carloa Salazar and Norm Flaska, Engrg. <br /> <br />RICHARD D. BLUM, P.E. <br />Chief, Constructlon-operatlons Division <br /> <br />!r <br />