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<br />I <br />I <br />I <br />& <br />I <br />t <br />I <br />, <br />I <br />C <br />I <br />I <br />, <br />I <br />j <br />I <br />I <br />I <br />I <br /> <br />Interior Dry Coatings <br /> <br />The coatings on the interior of the pedestal, both sides of condensate ceiling, the <br />underside of the tank bowl, the overflow pipe, and the inside of the access tube were all <br />in good condition. However, isolated areas of minor corrosion were observed on the <br />safety platform in the pedestal, on the inside of the access tube, around the bowl manway, <br />and at welding back-up bar attached to the tank bowl. These areas comprised less than <br />0.03% of the interior surface area of the dry riser. A fair amount of rust staining was <br />noted on the top of <br />condensate ceiling. This <br />staining was most likely <br />caused by areas of the <br />pedestal stiffer rings tbat <br />were cut to allow cellular <br />antenna cable routing. In <br />these areas the edges of the <br />cut stiffener and the new toe <br />plates added were not <br />cleaned and painted. Areas <br />where the paint was burned <br />due to welding on the <br />exterior of the pedestal <br />during cellular antenna <br />installation were prepared <br />and touch-up painted. <br /> <br /> <br />Photograph 5 - Typical Condition of Interior of Dry Riser <br />Note Gray Squares of Touch-up where Cellular Antennas are <br />Attached on the Exterior <br /> <br />Elevated Water Storage Tank <br />City of Arden Hills South Tank <br /> <br />4 <br />