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4 <br />2.0 EXECUTIVE SUMMARIES <br />2.1 Structural Examination Summary <br />Based on the inspection data, it appears that some miscellaneous structural <br />modifications and repairs are required. These modifications and repairs serve to <br />bring the tank into compliance with OSHA regulations, AWWA standards, as <br />well as allow for better coating bonding, allow for safer access in and on the tank <br />and, in some cases, removing unnecessary items. <br />2.2 Coating Evaluation Summary <br />2.2.1 Lead and Chromium Content Analysis <br />The total lead and chromium content of the interior and exterior coatings <br />was analyzed. The results in Appendix D show lead content below the <br />reporting limits for the testing (<RL) for each of the coatings - interior <br />wet, interior dry, and exterior coating. Current State regulations classify <br />none of the interior nor the exterior coatings as lead-based paint. <br />Removal of lead based paint must be performed in accordance with <br />applicable local, state and Federal regulations. Chromium levels in the <br />test samples indicate levels from below the reporting limits of the testing <br />(<RL) to 0.084 percent chromium. These chromium levels are not high <br />enough to be a concern in the waste streams generated during <br />reconditioning. <br />2.2.2 Interior Wet Coating <br />The tower was built and the interior wet area was last coated in 1992 and <br />is now 22 years old. The interior wet coating above the high water line <br />(HWL) is in fair to poor condition, with failures occurring at unwelded <br />seams and rust streaking emanating from areas inaccessible to coating. <br />The coating below the HWL is in fair condition with failures occurring <br />at random locations primarily on the cone section. The coating failures <br />are occurring primarily due to age and general deterioration. The poor <br />substrate condition under the coating along with the age of the coating <br />means that the coating is not repairable. The tank will require a <br />complete new interior coating within three to five years. See photos in <br />Appendix A. <br />2.2.3 Interior Dry Coating <br />The tower was built and the interior dry area was last coated in 1992. <br />The interior dry coating is in good to excellent condition, with coating <br />failures limited to areas susceptible to condensation or standing water, <br />such as the drywell tube, bowl, the stiffener girder floors, and in the <br />valve pit. These areas should be repaired in conjunction with interior <br />wet coating replacement. The remainder of the coating is in excellent <br />condition and requires no repairs. See photos in Appendix A. <br />