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th WachsWater 80 Drive Buffalo4741Cirove.,glno,s60089 <br /> 800 525 5821 fax 8474,5 2196 <br /> SERVICES Wachawate"tservicascom <br /> City of Decatur- Three Year Valve Assessment Program <br /> Scope of Services <br /> 1. Valve Assessment,Testing,GPS Locating and Documentation: The tasks under Work Items 1-4 <br /> on the attached Proposal Sheets are considered to be part of the inspection process and as such will <br /> not require the payment of prevailing wages to those involved in the work Wachs Water will <br /> adhere to the City's Minority Participation Goals for Public Works Contracts. <br /> Wachs Water Services will provide to the City a mobile device(s)with internet access to be used by <br /> each assessment team. The City will install a collector app for ArcGIS that the assessment team will <br /> use to input all assessment items into the City's water system database. This will allow the <br /> assessment team and the City to track progress and be alerted to identified,non-emergency, <br /> maintenance needs. <br /> The work shall include the following subtasks: <br /> 1.01 Locate and Identify the Valve: <br /> a. Determine the valve location using the City's electronically provided location <br /> information <br /> b. Valves shown on a plat but not located shall be searched for using recorded <br /> measurements,magnet locator,probing rods,and other tools for up to 15 minutes <br /> before being listed as a cannot-locate(CNQ. <br /> 1.02 Access the Valve:If necessary,the valve cover will be broken and then replaced. The City <br /> will provide replacement covers. <br /> 1.03 Clean Out/Dewater Valve Box/Vault:Debris will be vacuumed and water pumped out of <br /> valve box/vault such that the operating nut is visible and exposed sufficiently to inspect <br /> and operate properly. The City will provide a location to discard materials vacuumed out <br /> of valve boxes. Wachs Water Services will provide the equipment necessary to remove <br /> debris or water from the valve boxes/vaults. <br /> 1.04 Inspect Valve:Conduct a visual inspection from ground level of the valve,valve box,and <br /> vault,and other items that the inspection documents. <br /> 1.05 Exercise Valve:Valves will be exercised from the full open to full closed position until <br /> achieving a minimum of two full cycles showing an identical number of turns, (operated <br /> full open to full closed to full open is one cycle). All valves shall be exercised with the <br /> minimum torque required,applied in a graduated sequence to assure that all valves can be <br /> safety operated. Torque limits will be agreed with the City before commencement of <br /> field operations. As part of the Project Criteria document,Wachs Water will provide,for <br /> approval by the City,the standard operating procedures to be followed for the following <br /> valves: <br /> a. 3"- 4"double disk gate valves <br /> b. 6"-12"double disk gate valves <br /> C. 16"-24"double disk gate valves <br /> d. 30"-48"double disk gate valves,horizontal <br /> �� Scope of Services j <br />