Specifications include, but are not limited to: 1. Locate the Valve The City of Scottsdale will provide the awarded firm (Contractor), at minimum, two (2) copies of the City of Scottsdale’s most current water distribution maps on CD’s or other agreed upon media for the project area. The Contractor will locate all water distribution valves twelve inches (12”) and larger using the following guidelines: a) Search for all valves visually using the provided maps. b) Search for water valves shown on map, but not identified by visual inspection, using a magnetic locator, probing rods and other tools. c) If the valve cannot be located after searching for twenty minutes, the valve shall be documented as “cannot locate” and submitted as a work order for the City to address. 2. Identify the Valve Each valve has been given a unique identifier provided by the City of Scottsdale using the Geographic Information System (GIS) information data base. The identifier consists of the quarter section map number, specific valve number and GIS identification information. The Contractor shall have hardware and software that is compatible with Environmental Systems Research Institute (ESRI) in order to capture and transfer the data to City of Scottsdale Water, and the City’s GIS department. 3. Access the Valve Remove the valve cover in order to access the valve. If it is clear the cover is “stuck”, Contractor shall, break the cover, access the valve, complete the work and replace the cover. If the top section of a water valve box is found defective or broken during the process of locating and exercising, the Contractor shall replace it with a new one. All top sections and covers shall be provided to the Contractor by the City of Scottsdale. 4. Clean Out Valve Box/Vault Vacuum out debris or pump out water from the box/vault in order to allow access to the valve operating nut. In every case the operating nut must be exposed and clearly visible when the valve is exercised (not under water or debris). Contractor shall provide a vacuum and water pump with every work crew. 5. Valve and Valve Box/Vault Visual Inspection Execute a visual inspection of the valve and valve box/vault. This inspection shall be conducted from street level and is intended to discover discrepancies that are readily visible from above ground. The specific inspection information to be handed back to the City of Scottsdale through deliverables. 6. Valve Exercising a. The Contractor shall notify the Contract Administrator, or designee via email each day prior to locating and exercising any valves. This will allow City staff to make system adjustments and notifications that may be required. Under no circumstances should the Contractor exercise a water transmission line that is under full flow conditions without notification to the City. b. Exercise each large valve. This shall be done based on a plan that will identify each valve size and type encountered in this program. This plan shall be created by the awarded Contractor and the City. All valves will be exercised with the minimum torque required in order to minimize the possibility of damaging the valve. c. Specific valve exercising guidelines are to be provided by the awarded contractor making note of different sizes and types. The guidelines shall include, at minimum, the following information: 1) Specific operating procedures and torque limits for all butterfly valves. 2) Specific operating procedures and torque limits for all butterfly and gate valves. 3) Specific valve exercising equipment by type and manufacturer to be used on each size and type of valve. 4) Detailed, written valve exercising processes that will be used by operating crews that will include torque limits for every valve type and size anticipated in the scope of this program. 5) Specific procedures if a bypass valve is in place. d. Contractor shall notify the contract administrator or designee, within a reasonable timeframe if conditions of the job sites include any closed or broken valves, or if any unsafe conditions are observed. e. If the valve fails to cycle at the torque limit, the exercise process will stop immediately. Additional torque may be applied to the valve, as directed by the City of Scottsdale (with input from the contractor) until the valve turns or the operation is suspended again at a higher torque. f. Contractor shall anticipate scheduling night work in high traffic and/or flow areas if necessary. g. Contractor may be requested to assist in special projects that may include urgent or emergency work. For Example: While observing the gearbox operator stem, slowly turn operating nut to see if stem is turning. If stem is not turning, check for sheared bolt, roll pin, or fastener key that fastens the operating nut to the stem, and replace as necessary. h. The Contractor shall not charge the City of Scottsdale Water Department any downtime as a result of lack of preventative maintenance or any and all equipment necessary to perform the work under this contract. i. Contractor shall lock down every valve cap after PM is completed.
