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1 ' <br /> 4. Review all exterior appurtenances for damage due to corrosion. <br /> 5. Review all safety requirements for ladders, cages, etc., interior and exterior. <br /> 6. Review all health aspects of the tank, including screening of the vent, overflow pipe, <br /> and other possible contamination sources. <br /> 7. Review the exterior of the exposed foundations. <br /> 8. Prepare a report documenting all items found and recommendations for repair, including <br /> budgetary items. The Engineering report is to include: Conclusions and <br /> recommendations, base report,photographs, and descriptions. Photographs will be <br /> attempted; if they fail to develop, they will be deleted from the report. <br /> B. Cleanin�: <br /> 1. Clean the interior surfaces of the tank with high pressure water. Cleaning is necessary <br /> for the Professional to be able to remove all the mud. This allows DIXON the ability to <br /> see any deterioration of the steel, pitting, etc. High pressure water also enables DIXON <br /> to perform a very low cost adhesion test on the remaining coating. DIXON would <br /> notice if the coating is wavering, etc. which would indicate very poor adhesion and <br /> anticipated failure. The amount of mud removed from a torus tank is dependent upon <br /> Owner's preference,time allotted, and cleaning equipment available. <br /> C. Chlorination: <br /> 1. Chlorinate the tank per AWWA Method No. 3 C-652-92. Reinstall bottom manhole <br /> cover. <br />