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26 February 2016 <br />AGE -05-1339 <br />Page 2 of 6 <br />2.1.2 AST Age and Remaining Service Life <br />Facility staff are unsure of the AST placed in service year. The age of this AST is <br />estimated at not greater than 20 years [22CCR§66265.192(k)(3)]. The remaining <br />service life is estimated at 10 years [22CCR§ 66265.192(k)(11)]. Additional AST <br />specifications are included as Table 2. <br />2.1.3. Aboveground Storage Tank (AST) Construction <br />The AST specifications are shown on Figure 1 and is described with features, including: <br />General shape is rectangular; <br />Orientation is length wise, north to south [22CCR§66265.192 (k)(1)]; <br />Industry standard for AST construction is A36 steel with the primary tank top, <br />side wall, end wall and bottom measuring approximately 9/64 -inch, 3/16 -inch, <br />7/64 -inch and 9/64 -inch respectively. The secondary tank top, side wall, end wall <br />and bottom measure approximately 7/64 -inch in thickness <br />[22CCR§66265.192(k)(2)(A)] as measure by measuring tape; <br />Though the original black paint coat appears slightly faded, with minimal areas <br />showing bear steel, the AST is within a precipitation free enclosure. The visible <br />tank surface appeared in fair condition. Information on the original corrosion <br />protection coatings were not available from the manufacturer <br />[22CCR§66265.192(k)(5)]; and <br />Has not been attached to the ground <br />2.1.4. AST Ancillary Equipment <br />The AST ancillary equipment includes the visual overflow inspection ports and vent <br />piping, with a remote fill from the auto service, sub floor drain pans and lines. <br />2.2. OVERFLOW PROTECTION <br />The overflow protection system is comprised of the visual inspection ports. The AST is <br />typically not filled past an 95% level and an overflow audible alarm is installed and <br />inspected regularly. <br />