1996 AGN AUG 06 I40 - Laserfiche WebLink

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AGENDA REPORT For the Council Meeting of August 6, 1996 TO: HONORABLE MAYOR AND CITY COUNCIL APPROVAL: MALIK FREEMAN, INTERIM CITY MANAGER FROM: THOMAS K. CLARKE, INTERIM WATER & WASTEWATER DIRECTOR SUBJECT: APPROVAL OF EMERGENCY REHABILITATION OF 15" SEWER MAIN ON MT. VERNON AVE. BETWEEN "D" ST. AND VALLEY BLVD. IN THE AMOUNT OF $197,040 AND APPROVAL OF INSITUFORM SOUTHWEST AS THE CONTRACTOR DATE: JULY 30, 1996 BACKGROUND: On Wednesday, July 24, 1996 Zednem Construction was attempting to connect a new sewer main on Fairway Dr. at Mt. Vernon Ave., for a new housing tract being constructed at Fairway Dr. and Warm Creek Channel. The contractor accidently broke off the top half of the sewer main, exposing the surrounding area to raw sewage. At the contractor's expense, the Wastewater Division disinfected the area exposed to raw sewage, and the contractor made repairs to the broken sewer main. DISCUSSION/ANALYSIS: The Water and Wastewater Department inspected the broken sewer main along with portions of the sewer main which remained intact. It was determined that the intact sewer main was in poor condition, and could not withstand additional sewer connections and increased flow. The sewer main is located on Mt. Vernon Ave. from "D" St. to Valley Blvd., and it had not been previously identified by staff and Insituform Southwest as requiring rehabilitation. However, the video inspection of the City's sewer mains was performed by Insituform Southwest in FY90-91. In FY93-94 Insituform Southwest had been awarded a two-year contract to rehabilitate the City's sewer mains that were identified as needing immediate rehabilitation. However, due to financial constraints the many of the remaining sewer mains requiring immediate rehabiltation were not rehabilitated in FY94-95. The remaining sewer mains have been scheduled over the next five fiscal years for rehabilitation, beginning this fiscal year. On, Thursday, July 25, 1996 the Wastewater Superintendent recommended that the 15" sewer main be rehabilitated from "D" St. south to Valley Blvd., in order to insure the integrity of the sewer main. The City Manager concurred with the recommendation. Insituform Southwest was retained by the City to immediately rehabilitate the sewer main at a cost of $197,040. The sewer main was video inspected on July 30, 1996 and the rehabiltation work began on July 31, 1996 and was completed by August 1, 1996. 17M NO. 40