Laserfiche WebLink
2.5 Description and Evaluation of Any Corrosion Protection Equipment, Devices or <br />Material <br />The tank has a coat of machinery enamel in fair condition. Scraped and worn surface coating <br />appears typical for a tank of this age and is not a concern at this time. It should be noted that <br />the tank walls were not visible at all sides, including the underside. <br />2.6 Description and Evaluation of any Spill Prevention or Overfill Equipment <br />There is a float level gauge reading in inches of headspace and an Air Pump Co. Model <br />#3500ALM Level Control Valve which acts to cut off the air supply to the pump if the product <br />rises within 5" (reported value, not confirmed in the field) of the top of the tank. <br />2.7 Description and Evaluation of Secondary Containment for the Tank System <br />Secondary containment must meet minimum standards as specified in subsections (j)(1) <br />through 0)(3) of this section, including: <br />(1) Tank system must have secondary containment capable of containing 100 percent of the <br />contents of the tank and ancillary piping volume; and, <br />(2) If the Tank system is exposed to precipitation, the secondary containment system must <br />have sufficient capacity, in addition to that required in subsection 6)(1) of this section, to <br />contain run-off and infiltration from a 25 -year, 24-hour rainfall event, <br />(3) The Tank system secondary containment shall be provided with a leak detection system <br />that is designed and operated so that it will detect either the failure of the primary and <br />secondary containment structure or any release of hazardous waste or accumulated <br />liquid in the secondary containment system within 24 hours, or at the earliest practicable <br />time if the existing detection technology or site conditions will not allow detection of a <br />release within 24 hours. <br />The tank is constructed as a UL Listed double containment tank with the secondary containment <br />space rated to contain 110 percent of the tank's rated contents according to the tank <br />manufacturer, and is not exposed to precipitation. Overflow from the inner (product) tank spills <br />directly into the outer (secondary containment) tank. Once the secondary tank is full, product will <br />displace out the vent pipe and any open ports on the top of the tank. <br />Above Ground Storage Tank Professional Engineer Certification Page 4 <br />