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• .. _. <br />-' . ,. <br />• ♦ r r. <br />+• r. • r a +. r. r r r r <br />• ,- r r r r <br />To Z) cj C <br />Standard Evaluation <br />Results i <br />Tank <br />TestingMethod <br />Vtric <br />orr ' <br />tics with the performance <br />tress testing method described below comp <br />This form tells whether the underground storage tan regulation. The evaluation was conducted by the <br />to the U.S. EPA's "Standard Test <br />requirements of thefac federaltress Testing Methods-" The full <br />Methods - <br />equipment manufacturer or a consultann 1Viethads. Volumetric TankLTigh ..n the test data - <br />evaluation <br />for Evaluating beak Detect <br />report also includes a form describing the method and a form summarizing banes with the <br />provide comp <br />this form. on file to <br />w ers should check with State and local agencies to make sure this form satisfies <br />.Tan owners using this leak odetection system should keep <br />federal regulations. 'T <br />their requirements. <br />Method Description <br />Name Tidel Environmental Monitorin S stem eries S stem -Meed Probe <br />Version number EMS 2000 and EMS 311 <br />Vendor Tidel En ineerin lnc. <br />2615 E. 6eitline Road A% <br />416 -8222 - <br />Carrollton Texas 75006 <br />Evaluation Results <br />s a tank to be leaking when the measured leak rate exceeds the <br />This method which declare <br />FA of 4.67 °i6. <br />threshold of <br />0.05 gallon per hour, has a probability of false alarms [P( ) <br />il' of detection [P(D)j of a 0.10 gallon Per hour leak is 95.33• <br />The corresponding probab tty <br />performance standards <br />Therefore this method (X) does ( ) does not meet the federal ap r per hour standards <br />nda of <br />Ther the U. ,. Environmental Protection Agency (0.109 <br />established by <br />95®6 and P(FA) of 5%). <br />Test Conditions During Evaluation <br />10000 gallon (7) steel fiberglass tank <br />The evaluation testing was conducted in a <br />324 inches long. <br />that was 96 .. inches in diameter and <br />product levels 50 to 90 percent full. <br />The tests were conducted with the tank p ark and product <br />product added to fill the t <br />The temperature difference between p F t® +5,35 deg F, <br />already in the tank ranged from deg -- <br />with a standard deviation of 4.25 deg F. <br />The product used in the evaluation was unleaded gasoline <br />