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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2006 PAVEMENT MANAGEMENT PROGRAM I E. PROPOSED UTILITY IMPROVEMENTS II SANITARY SEWER IMPROVEMENTS Proposed improvements include replacing the sanitary force main from Lift Station #3 and from Lift Station #4. Due to the cOlTosi ve nature of area soils, age and material of the force main we anticipate that the existing condition of the pipe is fair to poor. The forcemain will be replaced with a 6" PVC or HDPE pipe. Exhibit A7 illustrates the proposed Sanitary Sewer Improvements. Each sanitary manhole will be inspected during the final design phase of the project to determine its condition. Manholes that appear to be structurally deficient will be included for repairs and lor reconstruction. Manholes with infiltrating ground water will be identified to be sealed as a part of future sanitary sewer rehabilitation work. W A TERMAIN IJVIPROVE'VIENTS Proposed improvements include the replacement of all hydrants and gate valves within the neighborhood. Due to corrosive soils, the age of the valves and past expelience in similar soil conditions the valves have often become inoperable and need to be replaced. Due to recent water main breaks along Arden Place the entire segment of watermain and house services along Arden Place is proposed to be replaced with high strength 8" PVC watermain. Watennain Option 1: Replace All Existing Watermain The existing 6" and 8" cast iron pipe and would he replaced with high strength 6" and 8" PVc. Due to the cOlTosive nature of the soils and based on past experience in similar soil conditions, it is possible that the cxisting watermain is nearing its useful life in several areas of the neighborhood beyond the breaks recently expClienced along Arden Place. This option would provide new life expectancy for the watermain within the neighborhood and reduce or eliminate the likelihood of ongoing spot repairs throughout the neighborhood over the next 50 years. The additional cost to replace watermain and services along Siems Court, Ridgewood Road and Skiles Lane is approximately $184,000. Exhibit A8 illustrates the proposed waterrnain improvements. PRIVATE UTILITIES Private utility companies have been notified of the extent and proposed schedule of the project. They will be required to relocate any of their lltilities that conflict with City uti Iities or roadway improvements proposed in the project. A meeting will be held with the private utility companies to discuss the proposed project and this may result in private utility upgrades. Although ptivate utility upgrades and modifications may be done in conjunction with this proposed project they would not be installed as part of this proposed project. Based upon our review of the neighborhood to date we do not anticipate significant private utility impacts. However if large amounts of watermain are replaced, some gas lines will likely need relocation or replacement. URS 1+