Res 2008-083 - Laserfiche WebLink

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Section 6 Plan for the Installation of Markers to Protect Pipelines and Appurtenances which are Vulnerable to Vehicles and other Hazards The City staff will review the current procedures in use to mark and protect pipelines. An analysis of incidents will be undertaken that will include location, type of work that was being undertaken, equipment that caused the incident, safeguards that failed, etc. Upon a review of the incidents, any common risk factors will be identified. A query of the GIS system will be undertaken to identity those critical sewers that are potentially at risk. Identification of at risk assets will be documented and marking systems evaluated and implemented. Pipeline markers identify the general area where pipelines run and show the City name and phone number. Markers indicate the general, but not exact, location of a pipeline. Not all pipelines follow a straight path between two markers and the markers don't indicate how deep the lines are buried. Section 7 Plan for the Testing, Repair, or Rehabilitation of Collection Lines that are a Source of Infiltration and Inflow The City has a continuing Sewer System Evaluation Study (SSES) program to identify sources of infiltration/inflow and deterioration requiring repairs. Two basins were evaluated approximately five years ago that generated approximately $800,000 in needed improvements. The City budgeted a total of $1.4 million during fiscal years 2006, 2007 and 2008 for SSES within the collection system. SSES projects are outsourced to consulting engineers who specialize in these evaluations and include dye flooding, smoke testing, manhole inspection, CCTV and rehabilitation recommendations • with estimated costs. Flow monitoring was undertaken in association with the 2005 Master Plan and included a comprehensive Infiltration/Inflow Analysis of dry and wet weather flows. Below are collection system basins identified for future SSES in the proposed order of occurrence. Basin 1. GS 14 with portions of GS 10, GS 12, GS 13, GS 19, GS21 2. GS3, GS6, GS 17, GS22 3. GS11, remaining portions of GS19, GS21, part of GS2 4. GS2 5. GS 1 6. GS13 7. GS10 Portions of the collection system above the Edwards Aquifer Recharge Zone are required to be inspected every five years. As such, these pipelines are on a 5 year cycle of inspection and rehabilitation. Other portions of the collection system will be evaluated based on prioritization of rainfall induced infiltration inflow. This intensive I/I program will be re-evaluated in 2008. The initial plan is summarized in the following project approach: Infiltration/Inflow Abatement Plan The following represents a proposed project approach. Tasks include: 1. Temporary Flow Monitoring (performed in 2005 Master Plan) 2. Manhole Inspection 3. Smoke Testing