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t ~~ <br /> <br />Cl'I'Y OF LA PUR'1'}~, <br />INTER-OFFICE MEMORANDUM <br />T0: Jerry Hodge, Direct~oJr of, Public Works DATE: July 27, 1981+ <br />FROM: Luther Maxey, s~j~sPublic Works Director <br />SUBJECT: Emergency Sewer Work in Alley Between First and Broadway at the <br />First Baptist Church <br />The subject sewer main is the original northern section of. the recently replaced <br />sewer line south of the First Baptist Church. It is a concrete line, 11 to <br />12 feet deep, that has been in service for longer than 30 years. The joints <br />are open and the top half of the pipe is missing in numerous areas. The <br />sewer cleaner could not pass through the line to adequately x•espond to <br />complaints of sewer stoppage. We found. that mud. and sections of the pipe <br />were falling into the flow line and causing stoppage. Additionally, the <br />• water blast of the sewer cleaner would cause more material to break free to <br />plug the sewer flow. <br />• City crews started the replacement project, however, due to the wet subsurface <br />from the open pipe, the.equipment and crew could not cope with the unstable <br />soil. After several cave-ins, I was afraid for 'the lives of the crew, <br />damage to the City equipment and possible damage to adjacent building slabs. <br />McKey Construction, Inc. was contacted to assist with a large backhoe, <br />adequate shoring materials and a crew experienced in working unstable anal <br />caving soil. . <br />To complete the project the sewer. pipe was halved to 10 foot joints, in lieu <br />of standard. 20 foort joints and placed between solid shoring. City crews will <br />complete the cleanup. <br />The charges from McKey Construction were $15,330.31. <br />If you should have any questions, please advise. <br />LM/lw <br />• <br />