Okaloosa County BOCC — March 4, 2014 — reading text

thoroughly all the interior wet surfaces, including those surfaces above the high water level. 4. The spent water shall be removed from the tank before filling the tank. B. Disinfection 1. It is the CONTRACTOR'S responsibility to flush and disinfect the tank until two (2) consecutive satisfactory water samples are reported from the OWNER'S laboratory. 2. Method 2 (Section 4.3) of AWWA C652 shall be used for disinfection (spray method). Material used for disinfection shall be HTH only. 3. The OWNER shall take and send in the samples to the laboratory, but shall assume no responsibility for the sampling technique or the care of the samples. 4. The stored tank water shall comply with current state and USEPA standards for organic, inorganic, and biological contaminants as influenced by the operations of the CONTRACTOR. 3.9 Cleaning and Painting Concrete A. Preparation 1. The CONTRACTOR shall dig down beside each foundation to expose approximately 4" more of the concrete than is normally exposed (at least 10" from the top of concrete). 2. Prior to any digging, the CONTRACTOR shall contact the utility hot line to have all utilities marked on the site. 3. All concrete areas thus exposed (from the ground to the base plates) shall be cleaned by brush-off blast cleaning to remove any existing coatings and other contaminants. This entails lightly abrading the concrete surface without entirely removing the surface concrete. 4. The aggregate shall not be exposed by the blasting operations. 5. All efflorescence and laitance shall be removed from the surface. 6. The cleaning operation shall be performed to open subsurface holes and voids and to produce a profile for the proper adherence of the specified coating system (equivalent to 40-60 grit sand paper). Repair & Paint 009870 - 29 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 282  7. Bug holes, voids, pinholes, honeycombs and any other concrete imperfections shall be patched, repaired or filled with 100% volume solids epoxy repair material prior to coating application. B. Coating Application 1. All cleaned concrete areas shall be given a two (2) coat roller applied coating. 2. Each coat shall be applied at a rate to achieve a 4.0 - 6.0 mil dry film thickness. The total dry film thickness shall be 10.0 mils. C. Backfill After the coatings have cured and been approved by the ENGINEER, the concrete structures are to be backfilled to the original grade. 3.10 GUARANTEE AND ANNIVERSARY INSPECTION A. All Work shall be guaranteed for five years after the date of substantial completion. This guarantee shall be provided for in the CONTRACTOR'S Performance Bond and as described in Section 00624, Warranty Attachment. B. The coatings manufacturer shall provide a 15 year warranty for the exterior coating system. The warranty shall cover the following: $ Color Retention $ Gloss Retention $ Chalking $ Checking. $ Blistering $ Cracking $ Delamination The Contractor shall prepare and field apply the complete specified coating system to a minimum of (6) panels (to be supplied by Tnemec – size 3” X 6” or larger) of each exterior finish color identified in the warranty. The (6) field applied sample panels of each finish color shall be air dried for a minimum of (7) days and shipped to Tnemec Company prior to final acceptance of the Work. The panels will be checked for verification of color accuracy and stored as the Original project Color Standards for the duration of the Warranty Coverage. Upon completion of the work, Tnemec Company shall forward the signed Warranty document along with two (2) panels of each finish color to the Owner for retention by the Owner and shall return two (2) panels of each finish color to the painting contractor Repair & Paint 009870 - 30 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 283  C. The Owner will notify the Contractor at least 30 days prior to each anniversary date throughout the five year warranty period and shall establish a date for each inspection. The tank will be drained, at Owner’s discretion, and the Owner's representative and the Contractor shall thoroughly inspect all surfaces both inside and out. Any defects in the coating system shall be repaired by the Contractor at no additional cost to the Owner. Should a failure occur to 25% of the painted surface, either interior or exterior, the entire surface shall be cleaned and painted in accordance with these specifications. D. The CONTRACTOR shall have at least one gallon of each final coating at the time of the inspection along with power cleaning tools and "Scotch-Brite" abrasive disks for spot cleaning. E. To return the tank into service more quickly, the CONTRACTOR shall also have two cases of Tnemec FC22 Touch-Up Kits (with appropriate compression gun) to touch up the interior wet surfaces. Spot repairs shall be made by the CONTRACTOR before returning the tank back into service. Repairs requiring extensive Work and rigging may be delayed until a time mutually agreeable to the OWNER and CONTRACTOR. F. It is the CONTRACTOR'S responsibility to disinfect the tank in accordance with AWWA C652-92 until two (2) consecutive satisfactory water samples are reported from the OWNER'S selected laboratory. All costs associated with the Anniversary Inspections, including disinfection if required, shall be included in the Base Bid price. 3.11 RESTORATION OF GROUNDS A. Clean-up 1. The job site shall be kept in a clean and safe condition at all times. Hazards or nuisances shall be protected at all times. 2. Upon completion of the Work, the job site and all nearby sites impacted by the Work activities shall be left clean of all debris, cleaning residue, or any other items resulting from the operations of the CONTRACTOR. 3. The cost of any cleanup which must be done by the OWNER shall be deducted from funds due the CONTRACTOR. Double layers of plastic sheeting (each at least 6 mil thick) shall be placed under any compressors, paint pumps, mixers, welding machines, etc., to prevent oils, solvents, organic compounds, or other contaminants from leaching into the soil. Any oils, solvents, organic compounds, or contaminants spilled on the site during the process of the Work shall be immediately removed and cleaned up by the CONTRACTOR B The CONTRACTOR shall grade and level the site upon completion of all work and Repair & Paint 009870 - 31 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 284  grass the site with rye or other type grass that will provide cover to all disturbed areas. This work shall be completed at no extra pay to the CONTRACTOR. 3.12 REPORTS A. The CONTRACTOR shall complete the reports included at the end of this section for this project. The report shall be completed daily and sent to the Owner and Engineer for their review and records. B. No progress payments will be authorized for payment until acceptable completed reports are properly submitted. 3.13 PRODUCT PERFORMANCE CRITERIA Provide the following product information and manufacturers published performance data should coatings or coating system be submitted in lieu of the standard of quality established in the project documents. Should the data not be available in a published format, or if the duration of the test does not meet the specified requirement, please respond in the appropriate space with NT (Not Tested). A. Interior and Exterior Primer 1. Generic Type: Organic Zinc Rich Urethane Primer 2. Special Qualifications: Certified in accordance with ANSI/NSF STD 61 for contact with potable water in tanks of 1,000 gallons capacity or greater. 3. Solids By Volume: 63% 4. Zinc Content: 83% by weight 5. Test Criteria: Test Criteria Test Duration Proposed Product Test Results Rust @ Scribe: ASTM B 117 50,000 hours Plane Rust: Salt Spray (Fog) (Scribed Panel) Blisters: Rust @ Scribe: ASTM G 85 15,000 Hours Plane Rust: Prohesion Blisters: ASTM D 4585 Rusting: 4,000 hours Humidity Blistering: Repair & Paint 009870 - 32 Countryview & Bluewater Tanks (2014) Job No. 41-459 Packet Pg. 285  ASTM 4541 Average of Three Report PSI Adhesion Tests ASTM G8 Cathodic 30 Days Exposure Disbondment Immersion Service 7 years – No (Potable Water) Failure B. Exterior 1st Intermediate Coat 1. Generic Type: Polyamidoamine Epoxy 2. Solids By Volume: 67% 3. Special Qualifications: Certified in accordance with ANSI/NSF STD 61 for