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UST Program - LG 113

UST Programs - LG 113

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

(Originally listed as Entropy Limited )

Precision Tank Inventory Control System Version 90


Certification Leak rate of 0.1 gph with PD = 97.9% 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 0.1 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 0.1 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.
Tank Capacity Maximum of 15,000 gallons..
Data Requirement Minimum of 64 days of product level and flow through data.
Comments Not evaluated using data from manifolded tank systems.
Of 120 data sets submitted for evaluation, 13 were not evaluated and 16 were inconclusive.
Median monthly throughput of tanks evaluated was 42,835 gallons.
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).)



Evaluator:  Midwest Research Institute

Attn: CMS Mailstop F-76

Tel:  (816) 753-7600

7300 West Friendly Ave.

Date of Evaluation:  04/02/91

P.O. Box 22087  
Greensboro, NC 27420-2087  

Tel:  (800) 253-8054


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