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<br />TABLE 1 - PROBABLE COST FOR THE DIGESTER REHABILITATION <br /> <br />ELK RIVER W ASTEW A TER TREATMENT PLANT <br /> <br />Maier Stewart & Associates, Inc. <br />June 1993 <br /> <br /> Description <br />A~ Sand Blast and Recoat the Interior of the Digester Steel Domel $ 9, 100 <br />B. Digester Dome Anchorage Repair2 1 , 000 <br />c. 6-inch Sludge Transfer Pipe Support 500 <br />D. Sewage Gas Pipe Connection 500 <br />E. 24-inch Access Manway 1 ~500 <br /> TOTAL $12,600 <br /> <br />Notes: <br /> <br />SSPC-SP6 commercial blast cleaning and 1 coat of coal tar epoxy. <br /> <br />2 <br /> <br />Includes full penetration pressure grouting of approximately 5 LF of thermal related <br />concrete cracking under two observed anchorage points. This also includes approximately <br />3 LF of seal welding the anchorage clips to the steel dome. The seal welds will eliminate <br />water infiltration and prevent corrosive gases from escaping. <br />