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Volumetric TTT Methof <br />Version TLP2 <br />Limitations on the Results <br />The performance estimates above are only valid when: <br />0 The method has not been substantially changed. <br />0 The vendor's instructions for using the method are followed. <br />0 The tank contains a product identified on the method description form. <br />0 The tank is no larger than -15,000 gallons. <br />0 The tank is at least _25 percent full. <br />0 The waiting time after adding any substantial amount of product to the tank is at least <br />6 hours. <br />0 The temperature of the added product does not differ more than _.6.5 degrees <br />Fahrenheit from that already in the tank. <br />0 The waiting time between the end of "topping off," if any, and the start of the test <br />data collection is at least NA hours. <br />0 The total data collection time for the test is at least 6.38 hours. <br />0 Large vapor pockets are identified and removed (for methods that overfill the tank). <br />0 This method 0 can 13 cannot be used if the ground -water level is above the bottom of <br />the tank. <br />0 Other limitations specified by the vendor or determined during testing: <br />This system operates in coniunction with an ATG system. If the groundwater level is <br />above the bottom of the tank, a non -tight tank is detected by means of continuous <br />monitoring of thewaterin the bottom of the tank by the ATG,system. <br />> Safety disclaimer: This test procedure only addresses the issue of the method's ability <br />to detect leaks. It does not test the equipment for safety hazards. <br />Certif icatio • Results <br />I certify that the volumetric tank tightness testing method was operated according to the <br />vendor's instructions. I also certify that the evaluation was performed according to the <br />standard EPA test procedure for volumetric tank tightness testing methods and that the <br />results presented above are those obtained during the evaluation. <br />W. D. Glauz/J. D. Flora Midwest Research Institute <br />inted n e) (organization performing evaluation) <br />425 Volker Blvd., Kansas City, MO 64110 <br />(signature) (city, state, zip) <br />June 26, 1992 (816) 753-7600 <br />(date) (phone number) <br />Volumetric TTT Method - Results Form Page 2 of 2 <br />