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

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I I Introduction The Waltek Corporation is currently undergoing an expansion of their existing facility, which will necessitate the extension of municipal sanitary sewer and watermain. At the present time, sanitary sewer is available on the west side of C.R. #57 a distance of 1,150 feet south of the Waltek project. Water service is available from an existing 12-inch watermain located a distance of 1,300 feet south of the Waltek project. Should the watermain be extended to the Waltek project, it would be highly desirable to extend the main an additional 1,000 feet northward to Sunwood Drive, thereby completing a 12-inch mink main loop. This will provide enhanced fire flows and system reliability to the Sunfish Lake businesses by furnishing them with back-up water supply. The purpose of this study is to determine the feasibility and associated costs for this project and propose a method of financing such. Description of Improvements The improvements would consist of extending the existing sanitary sewer, which is located on the west side of C.R. #57 at the intersection with 142nd Lane, northward a distance of 1,150 feet to the westward extension of 144th Avenue. The sanitary sewer will be extended westward a distance of 206 feet within the right-of-way obtained from Waltek for the future westward extension of 144th Avenue. Watermain would be extended along the west fight-of-way of C.R. #57 from its present terminus point located 800 feet north of C.R. #116 to the westward extension of Sunwood Drive a distance of 2,300 feet. The watermain will be placed in a casing jacked across C.R. #56 connecting to the existing 12-inch main located on the southeast corner of that intersection. All work will be performed within the county highway right-of-way, however, temporary easements may be required to facilitate construction. Traffic control will need to be placed along C.R. #57 during construction, and turf restoration will be required as a part of the project. Six-inch services for water service and six-inch sanitary sewer lateral shall be stubbed for each of the existing properties serviced by the utility extension. Consideration of Alternatives The invert of the sanitary sewer at 144th Lane and C.R. #57 is 867.1. It has been pointed out that a lower sewer is available to service these same properties at Sunwood Drive, just west of 145th Lane. This sewer has an elevation of 858.6. The extension of sewer from both these points would provide the opportunity for gravity service for the benefited parcels, with the higher sewer providing seven to nine feet of fall between the buildings and the sewer main. The lower sewer would provide a sewer main one to four feet deeper. Extensions from both locations will provide the opportunity for sewer service to a limited area west of the benefited properties, however, to service the entire developable area west of C.R. #57 will ultimately require a lift station. The most beneficial location of this lift station would be just east of the large wetland complex located east of the Regency Pond subdivision. The extension of sanitary sewer from Sunwood Drive would have some significant problems in providing service to this area. Although this sewer is low, it is also quite shallow - only 7.1 feet at the intersection of Sunwood Drive and 145tb Lane. Although the grade begins to rise south of Sunwood Drive along C.R. #56, approximately 1350 feet of this sewer would not meet the