Agenda - Council - 06/27/2017 - Laserfiche WebLink

Home

1. The Contractor shall install polystyrene insulation in those areas where the watermain or services may be susceptible to frost or freezing, or as directed by the Engineer. 2. Rigid foam insulation shall be placed between the watermain and storm or sanitary sewer where adequate vertical clearance cannot be maintained. The insulation shall be placed on a bed of sand and sand shall be placed above the insulation to isolate the insulation from rocks and other sharp objects. The ultimate thickness of insulation required shall be achieved by using 2 layers of insulation, the second layer shall be placed perpendicular to first layer and the joints shall be offset. C. Water Service Installation 1. The Contractor shall imprint the concrete face of curb at the locations of the utility service locations in accordance with City standards. 2. The Contractor shall keep accurate records as to the location of the service connections, as specified in the referenced specification. Final payment for the project will not be made until the information is in the possession of the Owner. 3. No warranty is expressed or implied as to the location, size or material type of existing service lines. The Contractor shall furnish and install all fittings required to make the connections. 4. The Contractor shall install new service pipe, at 7.5 foot bury depth, from the tee to the property line, or as shown on the plans, or as directed by the Engineer. 5. The water services shall be hydrostatically tested and disinfected D. Polyethylene Encasement 1. The Contractor shall furnish and install polyethylene encasement for the entire main and all appurtenances in accordance with the referenced specification. 3.3 FIELD QUALITY CONTROL A. Electrical Conductivity Test 1. Conductive Pipe Materials (a) See the referenced Specification CEAM 2611.3.F 2. Non-conductive Pipe Materials (a) The conductivity requirements shall be to demonstrate the electrical continuity of the tracer wire. 3.4 HYDROSTATIC TESTING AND DISINFECTION A. Hydrostatic tests shall be conducted in accordance with the referenced specification. Individual tests from valve to valve are required. These tests shall be conducted prior to the bacteriological tests required with the disinfection of the main. No drop in pressure will be allowed during the last two hours of the pressure test. B. The Contractor shall disinfect the watermain in accordance with the provisions of AWWA Standard Specification C-651, Disinfecting Watermains. After performing and obtaining passing hydrostatic test results, two samples of the water, taken 24 hours apart, shall be taken from each section of the new pipe and sent to an approved testing laboratory to establish the bacteriological conditions prior to placing the line in service. In the event unsatisfactory results are obtained, the Contractor shall take whatever steps are necessary to correct the sanitary conditions. The Contractor shall then re -take the bacteriological tests until satisfactory results are obtained. ****END OF SECTION**** City of Ramsey - R16.111092 DOMESTIC WATER SYSTEM April 5, 2017 PAGE 02510-6 V092214 © Bolton & Menk, Inc. 2017, All Rights Reserved