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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />4) Overflow Pipe <br /> <br />A stainless screen should be placed over the overflow pipe's outlet to eliminate <br />the possibility of wildlife entering the tank. The cost of this item should not <br />exceed $400. <br /> <br />5) Ladders <br /> <br />The ladders were in good condition overall. A future major rehabilitation of the <br />tank should include an item to add non-slip coatings to the ladder rungs. <br /> <br />6) Dry Riser and Bowl <br /> <br />The coatings on the interior of the pedestal and on the bowl exterior were in good <br />condition overall but areas of corrosion should be spot repaired along with coating <br />repairs on the tank interior. The bare steel plates added during cellular antenna <br />cable installation should also be cleaned and painted. Specifications should <br />require surface preparation in accordance with SSPC-SP 11 "Power Tool <br />Cleaning to Bare Metal" followed by two coats of an epoxy coating. The cost for <br />these coating repairs should not exceed $7,900. <br /> <br />8) Vent <br /> <br />The existing tank vent is not a clog and/or frost resistant design. A WW A <br />Standards recommend that all vents with screening against insects be designed to <br />ensure "fail-safe" operation if the screens become clogged or frosted over. <br />Therefore, the existing vent should be replaced with a clog-resistant vent. The <br />vent should be designed so that it is removable in order to act as an additional <br />means to access the tank and provide additional ventilation during any work <br />inside the tank. The cost to add an additional vent should not exceed $7,000. <br /> <br />9) Roof Openings <br /> <br />The roof openings were in good condition. <br /> <br />10) Interior Coating <br /> <br />For the interior of the tank container (interior wet), KTA recommends spot <br />repairing all areas of corrosion. Each area should be prepared in accordance with <br />SSPC-SP II "Power Tool Cleaning to Bare Metal". All spot-prepared areas <br />should then receive a three-coat epoxy system that is certified compliant with the <br />ANSIINSF 61 standard. This repair should be performed within the next three <br />years. KTA's opinion of probable construction cost for spot repairs to the tank <br />exterior should be approximately $13,500. <br /> <br />Elevated Water Storage Tank <br />City of Arden Hills South Tank <br /> <br />35 <br />