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May -14-98 03:31P <br />4. <br />40 <br />OmntectEiectro Levels Mfg., Inc. <br />OEL 8000 <br />(Magnetostrictive Probe) <br />AUTOMATIC TANK GAUGING SYSTEM <br />Revision Date: April 18, 1997 <br />Certification: Leak rate of 0.1 gph with Po=97,8% and PFA=2.2%. <br />Leak Threshold: 0.05 gph. A leak is declared if the output of the measurement system equals or exceeds <br />this threshold. <br />Applicability: Gasoline, diesel, aviation fuel, fuel oil #4, waste oil, solvents. <br />Other liquids may be tested atter consultation with the manufacturer. <br />Tank Capacity: Maximum of 15,000 gallons. <br />Tank must be between 50 and 9510% full. <br />Waiting Time: Minimum of 6 hours, 30 minutes between delivery and testing. <br />There must be no delivery during waiting time. <br />Test Period: Minimum of 4 hours. <br />Test data are acquired and recorded by a computer. <br />Leak rate is calculated from data determined to be valid by statistical analysis. <br />There must be no dispensing or delivery during test. <br />Temperature: Average for product is determined by a minimum of 5 thermistors. <br />Water Sensor: Must be used to detect water ingress. <br />Minimum detectable water level in the tank is 0.055 inch. <br />Minimum detectable change in water level is 0.011 inch. <br />Calibration: Thermistors and probe must be checked and calibrated in accordance with <br />manufacturer's instructions. <br />Comments: Not evaluated using manifold tank systems. <br />Tests only portion of tank containing product. <br />As product level is lowered, leak rate in a leaking tank decreases (due to <br />lower head pressure). Consistent testing at low levels could allow a leak to remain <br />undetected. <br />EPA leak detection regulations require testing of the portion of the tank system which routinely <br />contains product. <br />IJ <br />Omntec/Electro Levels Mfg., Inc. <br />1993 Pond Rd. <br />Ronkonkoma, NY 11779 <br />Tel: (516) 981-2001 <br />Evaluator. Ken Wilcox Associates <br />Tel: (816) 443-2494 <br />Date of Evaluation: 01117/96 <br />180 <br />Appearance on this list is not to be construed as an endorsement by any regulatory agency nor is it any guarantee of the performance of <br />the method or equipment Equipment should be installed and operated in accordance with all applicable laws and regulations. <br />e <br />