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Issue Date: November 22, 1995
Revision Date: January 11, 2001
Computerizing, Inc.
Computank, Version 3.0
STATISTICAL INVENTORY
RECONCILIATION TEST METHOD (QUANTITATIVE)
| Certification |
Leak rate of 0.1
gph with PD = 99.5% and PFA = 2%.
"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 |
0.05 gph.
A tank system should not be declared tight if the test result indicates a
loss or gain that equals or exceeds this threshold. |
| Applicability |
Gasoline, diesel. |
| Tank
Capacity |
Maximum of 18,000
gallons. |
| Data
Requirement |
Minimum of 30
days of usable product level and flow through data are required. |
| Comments |
Not evaluated
using data from manifolded tank systems.
Of 41 data sets submitted for evaluation, 17 were not analyzed.
Median monthly throughput of tanks evaluated was 2,340 gallons.
Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation.
Data sets evaluated were supplied by evaluator. |
|
Computerizing,
Inc.
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Evaluator:
Ken Wilcox Associates
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PO Box
99
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Tel: (816) 443-2494
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Scottsboro,
AL 35768
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Date of Evaluation:
09/17/92
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Tel:
(256) 259-1805
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