A. INITIAL SERVICE AND DOCUMENTATION: 1. Comprehensive written procedures detailing the tasks to be performed at each site for each system shall be provided to the District Representative prior to start of initial water testing and treatment. 2. Successful Bidder shall provide a report for all facilities listed in the Attachment D. 3. The reports shall document the water quality of each HVAC Water System, including chilled water, heating hot water, and cooling tower water. See items B.3 (a)-(g), B.5, B.6, B.9, and B.12 below. The reports shall include lab analyses and recommendations. 4. Monthly service visits shall be made for all closed loop systems for the first six months of the contract. When these systems have stabilized, services visits shall be quarterly. B. ROUTINE WATER TESTING AND TREATMENT: 1. Comprehensive written procedures detailing the tasks to be performed at each site for each system shall be provided to the District Representative prior to start of routine water testing and treatment. 2. Provide a minimum of one (l) quarterly service visits for each closed loop system at each location listed on Attachment D. A service schedule shall be provided to the District Representative for each location prior to commencement of the contract. The schedule shall be coordinated with the individual facilities. The first visit shall be to complete the "Initial Documentation" task described herein. 3. Provide testing and treatment reports for each system. All testing and chemical treatment will be provided by successful Bidder. No testing or chemical treatment will be done by SBAC personnel. Written service reports, which will be submitted to the District Representative within (5) days of each visit, shall include all testing data and list any problems found within each system and recommendations for resolving the identified issues. Monthly testing shall include, but not be limited to: a) Chlorides b) Total Alkalinity c) Calcium Hardness d) Conductivity e) Inhibitor Level f) Mass Balance (chloride cycles vs. calcium & “m” alkalinity cycles) g) Holding Time Index 4. pH must be maintained in a range that is appropriate for the metals contained in the system. For multi-metal systems with aluminum, the pH shall be 6.0-8.5. For multi-metal systems with stainless steel, the pH shall be 7.0-9.5. Total alkalinity shall be 100-500 ppm as CaC03. Filtration shall be at or below 5 microns. Total suspended solids shall be below 10 ppm. Corrosion inhibiting compounds shall be used to protect metals per ASTM D2688. Aluminum less than 0.25 MPY. Copper less than 0.1 MPY and soluble copper less than 0.25 ppm. Steel less than 3.0 MPY. 5. Semi-annual reviews shall be provided/scheduled by successful Bidder for the benefit of the District Representative. 6. On-site aerobic microbiological growth-monitoring shall be provided a minimum of once every (3) months (4 times annually). Monitoring results shall be available within 3 to 5 days of the test. A growth of l04 or less shall be maintained by the biocide program. 7. On-site anaerobic microbiological growth monitoring shall be conducted a minimum of every six months or as per equipment manufacturer and/or materials require. Monitoring results shall be made available within 3 to 5 days following the test. 8. Successful Bidder shall provide all necessary testing equipment and reagents for testing during the term of the contract. 9. Successful Bidder shall test feed and control systems during each scheduled service. 10. Successful Bidder shall furnish labor to maintain, service, and repair closed tower feed and control systems as needed. Repair and replacement parts and components will be provided by SBAC. 11. Successful Bidder shall be available for consultation regarding purchase and installation of new feed and control equipment. 12. Cooling towers shall be limited to four (4) cycles of concentration based on water hardness and alkalinity. C. CHEMICAL PRODUCTS: 1. Successful Bidder shall provide all chemicals necessary for successful performance of the services. Chemicals shall be stored off site. No on-site chemical storage will be permitted. Successful Bidder shall dispose of all expended chemical containers off-site. Successful Bidder shall be responsible for chemical transfer between containers and between sites. The cost of all necessary chemicals and disposal of expended chemical containers shall be an element of the Bidder’s overhead burden in the unit prices bid 2. Safety Data Sheets (SDS) shall be provided to the District Representative for all items, materials and/or substances that will be used at each site listed in Attachment D. Successful Bidder shall supply and maintain current SDS sheets for all chemicals used. No formaldehyde shall be accepted in any quantity as a component of any chemical submitted for water treatment. 3. All chemicals used shall be in accordance with all federal, state, county, and city statutes, laws, rules, and ordinances. 4. Successful Bidder shall maintain a record of all chemicals used during the contract. 5. Cooling tower inhibitor shall not contain molybdate or chromate. 6. Cooling tower biological control will be accomplished through the timed addition of ten (10) DTEA and isothiazolin, and/or bromine tablets. 7. Hot and chilled water closed loop systems shall use a phosphonate/silicate/polymer/azole blend or nitrate sorate blend.
