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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 Ustman Industries, Inc.)

USTMAN SIR Versions 95.2, 95.2A, 95.2B


Certification Leak rate of 0.1 gph with PD > 99.2% and PFA < 0.08% (Version 95.2).
Leak rate of 0.2 gph with PD > 99.9% and PFA < 0.1% (Version 95.2A).
Leak rate of 0.2 gph with PD > 97.2% and PFA < 0.1% (Version 95.2B).
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 (0.1 gph for the 0.1 gph test), 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 (0.1 gph for the 0.1 gph test) 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 60,000 gallons for single tanks.
Maximum of 60,000 gallons cumulative capacity for manifolded tank systems with no more than 4 tanks in system.
Data Requirement Minimum of 30 days of product level and flow through data.
Comments 44% of data sets evaluated were from manifolded tank systems.
Of 94 data sets submitted for evaluation, all were analyzed with conclusive results.
Results obtained from combined data for USTMAN Version 94.1 and 95.2.
Data used in the evaluation were obtained from manual tank sticking.
Median monthly throughput of tanks evaluated was 15,483 gallons.
Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation.
Data sets evaluated were supplied by evaluator.

The UstmanSIR method version 95.2B does not meet the Federal UST requirement for Statistical Inventory Reconciliation to use a threshold that does not exceed one-half the minimum detectable leak rate. (40 Code of Federal Regulations, part 280, subpart 43, subdivision (h), paragraph (3).)


Gilbarco/Veeder Root

Evaluator:  Ken Wilcox Associates

Attn: CMS Mailstop F-76

Tel:  (816) 443-2494

7300 West Friendly Ave.

Dates of Evaluations:   12/12/95, 07/21/00

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

Tel:  (800) 253-8054


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