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UST Program - LG 113

UST Programs - LG 113

Issue Date: November 22, 1995
Revision Date: April 5, 2002

(originally listed as Ustman Industries, Inc.)



Certification Leak rate of 0.1 gph with PD = 98.4% and PFA = 1.6%. 
"If a method meets the requirement for detecting a leak rate of 0.1 gph, it will meet the requirement for 0.2 gph.", according to "Standard Test Procedures for Evaluating Leak Detection Methods:
Statistical Inventory Reconciliation Methods", EPA/530/UST-90/007, June 1990, Section 7.2.3, page 30.
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 18,000 gallons.
Data Requirement Minimum of 42 days of product level and flow through data.
Comments Not evaluated using data from manifolded tank systems. 
Of 41 data sets submitted for evaluation, 4 data sets were not analyzed and 7 were inconclusive. 
Median monthly throughput of tanks evaluated was 10,978 gallons. 
Leak rates ranging from 0.048 to 0.201 gph were used in evaluation. 
Data sets evaluated were supplied by evaluator.


Gilbarco/Veeder Root

Evaluator:  Ken Wilcox Associates

Attn: CMS Mailstop F-76

Tel:  (816) 443-2494

7300 West Friendly Ave.

Date of Evaluation:  10/31/91

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

Tel:  (800) 253-8054


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