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Issue Date: November 22, 1995
Revision Date: May 5, 2003
Warren Rogers
Associates, Inc.
WRA
Statistical Inventory Analysis, Version 5.1
STATISTICAL INVENTORY
RECONCILIATION TEST METHOD (QUANTITATIVE)
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Certification |
Leak rate of 0.1
gph with PD = 99.98% and PFA = 0.02%.
"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. |
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Leak Threshold |
0.05 gph.
This leak threshold is for evaluation purposes only.
A tank system should not be declared tight if the test result indicates a
loss or gain that equals or exceeds the leak threshold calculated from the
data set. This leak threshold may be different than the above leak
threshold. |
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Applicability |
Gasoline, diesel.
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Tank Capacity |
Maximum of 18,000
gallons. |
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Data Requirement |
Minimum of 30
days of product level and flow through data. |
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Comments |
Not evaluated
using manifolded tank systems.
Of 41 data sets submitted for evaluation, all were analyzed with conclusive
results.
Median monthly throughput for tanks evaluated was 1000 gallons.
Leak rates of 0.05, 0.1, and 0.20 gph were used in evaluation.
A portion of data sets evaluated was supplied by vendor. |
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Warren
Rogers Associates, Inc. |
Evaluator: Ken Wilcox Associates |
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747
Aquidneck Ave. |
Tel :
(816) 443-2494 |
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Middletown, RI 02840 |
Date of
Evaluation: 12/18/90 |
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Tel:
(800) 972-7472 |
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E-mail: info@wraenviro.com |
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URL: www.wraenviro.com |
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