Issue Date: November 22, 1995
Revision Date: February 22, 2017

Syscorp, Inc.

Store Vision Version E.2

Statistical Inventory Reconciliation Test Method (Qualitative)

Certification Leak rate of 0.2 gph with PD = 95.7% and PFA = 0%.
Leak Threshold If the absolute value of the calculated leak rate (gain or loss) is less than the leak threshold and the minimum detectable leak rate is less than or equal to 0.2 gph , the test result is "pass." If the absolute value of the calculated leak rate is greater than or equal to the leak threshold, the result is "fail." If the minimum detectable leak rate exceeds 0.2 gph and the absolute value of the calculated leak rate is less than the leak threshold, the test result is "inconclusive."
Applicability Gasoline, diesel.
Other more viscous liquids may be tested after consultation with the vendor.
Comments

Not evaluated using manifolded tank systems.
Of 120 data sets submitted for evaluation, 32 were inconclusive.
Median monthly throughput of tanks evaluated was 8,097 gallons.
Leak rate of 0.2 gph was used in evaluation. Data sets evaluated were supplied by evaluator.

This method does not meet the Federal UST requirement for Statistical Inventory Reconciliation to report a quantitative result with a calculated leak rate. (40 Code of Federal Regulations, part 280.43(h)(1).)
  • Syscorp, Inc.
    531 HighlandPark Circle
    Birmingham, AL 35242
    Tel: (205) 853-0004
  • Evaluator: Midwest Research Institute
    Tel: (816) 753-7600
    Date of Evaluation: 09/30/93

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