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Inspection and Maintenance Programs <br />Review of the I/I study data, sewer cleaning records and consultation with sewermaintenancepersonnelconcludedthatamaintenanceplanwhichwouldresultina <br />thorough inspection and maintenance of the entire collection system once in 10 <br />years would be reasonable. It was further suggested that initially a 5 -year plan <br />be established and target areas be reevaluated on an annual basis. <br />The recommended inspection and maintenance program is as follows: <br />1) Televise 10 percent or 21,600 lineal feet each year looking for <br />root and leak problems. <br />2) Conduct a detailed physical survey of 85 manholes per year. <br />3) Re -televise approximately 2.0 percent or 4,400 lineal feet in second <br />year as follow-up to work done in previous years. <br />4) Treat 1.5 percent or 2,800 lineal feet for root control. <br />5) Grout 200 joints and 12 manholes per year. <br />Since the I/I study concluded that the trailer park areas may be contributing <br />significant amount of I/I flow it is recommended that a special flow monitoringprogrambesetuptosubstantiateapossiblesurchargetocovertheextracosts due <br />to "excessive" I/I. This would require 4 to 8 temporary flow monitors be set during <br />April thru July time frame to document flows. <br />The estimated costs for the inspection and maintenance program is as follows: <br />1) Televise 26,000 lineal feet <br />2) Physical survey of 85 manholes <br />3) Flow monitor rental <br />4) Root control treatment <br />5) Pipe joint & manhole grouting <br />9,100 <br />3,400 <br />1,100 <br />1,500 <br />7,800 <br />TOTAL $ 22,900 <br />System Improvements <br />The three (3) major lift stations in the City's system are nearly 20 years old. Therefore, it is anticipated that in the next five (5) years at least three (3) or <br />four (4) of the six (6) motors and/or pumps will need replacement. In 1982 one of <br />the smaller pumps and motors was replaced at an equipment cost of $3,800. <br />Lift station No. 4 on the east end of Woodale Drive (behind Edgewood Community <br />Center) has been averaging a new pump and motor every 12 to 18 months at a cost of <br />1,000 to $1,500. It is staff's goal to phase out lift station No. 4 at the time <br />4