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0 0 <br /> Volumetric TTT Method TLS-250/TLS-250i/TLS-350 UST Monitoring Systems <br /> Version 8473 Digital Sensing Probe (Magnetostrictive) <br /> Limitations on the Results <br /> The performance estimates above are only valid when: <br /> • The method has not been substantially changed. <br /> • The vendor's instructions for using the method are followed. <br /> • The tank contains a product identified on the method description form. <br /> • The tank is no larger than 15.000 gallons. <br /> • The tank is at least 25 <br /> L percent full. See other limitations below. <br /> • The waiting time after adding any substantial amount of product to the tank is 8.25 <br /> hours. <br /> • The temperature of the added product does not differ more than 8.57 degrees <br /> Fahrenheit from that already in the tank. <br /> • The total data collection time for the test is at least 3 hours. <br /> • Large vapor pockets are identified and removed (for methods that overfill the tank). <br /> • The method 0 can ❑ cannot be used in the groundwater is above the bottom of the <br /> tank. See other limitations below.2 <br /> • Other limitations specified by the vendor or determined during testing: <br /> 'The method tests the tank below the liquid level. Associated testing (at MRI) of the <br /> system as an ATG demonstrated that the method is valid when the tank is 50-95% <br /> full. This system operates in conjunction with an ATG system. If the groundwater <br /> is above the bottom of the tank, a non-tight tank is detected by means of continuous <br /> monitoring of the water level in the bottom of the tank by the ATG system. <br /> > Safety disclaimer: This test procedure only addresses the issue of the ATG system's <br /> ability to detect leaks. It does not test the equipment for safety hazards. <br /> Certification of 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 /> J. D. Flora Midwest Research Institute <br /> (printed name) (organization performing evaluation) <br /> P. - --& - 425 Volker Blvd., Kansas City, MO 64110 <br /> ( gnature) (city, state, zip) <br /> March 14, 1995 (816) 753-7600 <br /> (date) (phone number) <br /> Volumetric TTT Method - Results Form Page 2 of 2 <br />