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4.0 INSPECTION AND EVALUATION METHODS Section 4.0 4.1 Methods4.1.1 The tank was evaluated on the interior and exterior in conformance with the following: a) General guidelines of AWWA Manual M42 Appendix C “Inspecting and Repairing Steel Water Tanks, and Elevated Tanks for Water Storage”. b) BSI “Procedures and Guidelines for Inspecting Existing Steel and Concrete Water Storage Tanks”. The inspection of the base metal and coatings on interior and exterior surfaces included only areas accessible without scaffolding or special rigging. Where possible, the base metal and coating on the interior wet surfaces were examined from a rubber raft while the tank was being drained. The overall structural condition of the tank was visually examined. No structural analysis was done to determine if the tank design complies with the AWWA D100-96 Standard for “Welded Steel Tanks for Water Storage”. However, any observed non-conformance to the AWWA D100 standard is noted in this report. Although compliance with OSHA regulations was not a part of this inspection, any unsafe conditions or violations of current OSHA regulations that were observed are noted in this report. 4.2 Examination and Evaluation Techniques Some or all of the following procedures were performed as applicable: 4.2.1 Site Survey The tank site was evaluated for proper drainage and conditions affecting access. Also, the following site dimensions were obtained; distance to fence(s), power lines, owner buildings, public property, private property/buildings, school/playgrounds, public parks, and other property. 4.2.2 Foundations The tank concrete foundation was visually examined for cracks, spalling condition of grout, indications of distress or settlement, and elevation above grade. 10