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� - <br /> B L A C K & V E A T C H <br /> Decatur, Illnois <br /> Lake Decatur Dam Improvements <br /> Hydraulic Piping Replacement <br /> Probable Construction Cost <br /> September 23, 1993 <br /> Page 4 <br /> Step Item Description Quantity Unit Unit Cost Total C <br /> ---- ---------------- -------- ---- --------- ------- <br /> $ <br /> STAGE III: (Cont'd) <br /> 7. Place concrete over vertical <br /> pipe runs at Spillway Lump Sum 5,000 <br /> 8. Remove supports & test gate Lump Sum 2,000 <br /> Total - Stage III $102,500 <br /> STAGE IV: GATE I IN SERVICE, GATE II OUT-OF-SERVICE <br /> Mobilization/demobilization Lump Sum 1,100 <br /> 1. Refill B3, & B4 with oil <br /> & test Lump Sum 2,500 <br /> 2. Test Gate II on all cylinders Lump Sum 2,000 <br /> 3. Place concrete over horizontal <br /> pipe runs above the central <br /> structure floor Lump Sum 3,000 <br /> Total - Stage IV $8,600 <br />