Agenda - Council - 07/27/1999 - Laserfiche WebLink

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I ! ! I I i I I minimum 7.5 feet cover requirement to prevent freezing. A total of 1100 feet would have less than 5 feet of cover, with one point being only 21 inches below grade. There are also some significant disadvantages that would affect the construction cost for this alternative. The lower sewer alternative would require dewatering, while the 144th Lane extension would not. The lower sewer would require up to a 22-foot cut along a county road while the 144th Lane sewer has a maximum cut of 13.5 feet. The sewer extension from Sunwood Drive would require 2700 feet of sewer versus 1250 feet for the 144th Lane extension. At least 1700 feet of the Sunwood Drive sewer would not provide any service since the adjacent land uses include wetland and the Deemer property which will require an additional lateral sewer even if this sewer is extended along Sunwood Drive. In conclusion, this lower sewer available from Sunwood Drive is not feasible both on an economic and an operational basis. Estimated Project Costs Appendix A contains a detail of the construction costs, which are estimated to be $111,680. In addition to construction costs, project overhead of 30% is estimated and detailed below: Engineering 10% Staking and Inspection 7% Fiscal and Legal 3% Administration 5% Contingencies 5% There are no anticipated right-of-way costs for the project. Therefore, the total project cost is anticipated to be $145,184. Project Financing This project is anticipated to be financed by special assessments under the state guidelines provided by MS 429. Project construction costs will be segregated into two classifications, trunk charges and lateral benefit charges. Trunk charges include pipe over-sizing from that necessary to service the parcel being assessed. For this project, the trunk fund will cover the costs which include the over-sizing of the watermain from 8 to 12 inches and the total cost of watermain that lies beyond the benefited parcels identified on Exhibit 1. The trunk costs of this project are estimated to be $67,340 with detailed costs outlined in Appendix B. The lateral benefits consist of the cost of minimum-size sewer and water mains to service benefited parcels. The total lateral costs are estimated to be $77,844. This cost is determined by subtracting the total project cost (detailed in Appendix A) from the project trunk costs (detailed in Appendix B). Trunk charges will be funded from a trunk fund into which each benefited parcel is assessed a uniform unit charge of $9,324 per acre ($6,435 per acre for water and $2,889 per acre for sewer).