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UST Program - LG 113

Issue Date: November 14, 1995
Revision Date: April 11, 2011

National Environmental, LLC
(formerly Advanced Telemetrics, Ltd.)

Tanknetics SIR, Version 2.1

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

Certification	Leak rate of 0.2 gph with PD = 99.9% and PFA = 0.1%. Leak rate of 0.1 gph with PD = 99.9% and PFA = 0.5%.
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 45,000 gallons for single tanks. Maximum of 45,000 gallons cumulative capacity for manifolded tank systems with no more than 4 tanks in system.
Data Requirement	Minimum of 28 days of product level and flow through data.
Comments	51% of data sets evaluated were from manifolded tank systems. Of 41 data sets submitted for evaluation, all were analyzed with conclusive results. Median monthly throughput of tanks evaluated was 18,897 gallons. Leak rates ranging from 0.043 to 0.234 gph were used in evaluation. Data sets evaluated were supplied by evaluator.

National Environmental, LLC	Evaluator: Ken Wilcox Associates
560 CR 275	Tel: (816) 443-2494
Water Valley, MS 38965	Date of Evaluation:01/28/97
Tel: (800) 520-4802
E-Mail: james@tanknetics.com
Website: www.tanknetics.com

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