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4 . 0 INSPECTION AND <br /> EVALUATION METHODS <br /> 4.1 Methods 4.1.1 <br /> The tank was evaluated on the interior and exterior in conformance with the <br /> following: <br /> a) General guidelines of AWWA Manual M42 Appendix C "Inspecting and <br /> Repairing Steel Water Tanks, and Elevated Tanks for Water Storage". <br /> b) BSI "Procedures and Guidelines for Inspecting Existing Steel and Concrete <br /> Water Storage Tanks". <br /> The inspection of the base metal and coatings on interior and exterior surfaces <br /> included only areas accessible without scaffolding or special rigging. Where possible, <br /> the base metal and coating on the interior wet surfaces were examined from a rubber <br /> raft while the tank was being drained. <br /> The overall structural condition of the tank was visually examined. <br /> No structural analysis was done to determine if the tank design complies with the <br /> AWWA D100-96 Standard for"Welded Steel Tanks for Water Storage". However,any <br /> observed non-conformance to the AWWA D100 standard is noted in this report. <br /> Although compliance with OSHA regulations was not a part of this inspection, any <br /> unsafe conditions or violations of current OSHA regulations that were observed are <br /> noted in this report. <br /> 4.2 Examination Some or all of the following procedures were performed as applicable: <br /> and Evaluation 4.2.1 Site Survey <br /> Techniques The tank site was evaluated for proper drainage and conditions affecting access. <br /> Also,the following site dimensions were obtained; distance to fence(s), power lines, <br /> owner buildings, public property, private property/buildings,school/playgrounds, <br /> public parks, and other property. <br /> 4.2.2 Foundations <br /> The tank concrete foundation was visually examined for cracks, spalling condition of <br /> grout, indications of distress or settlement, and elevation above grade. <br /> 11 <br /> 138 <br />