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Issue Date: November 22, 1995
Revision Date: April 5, 2002
Veeder-Root
(originally listed as Ustman Industries, Inc.)
USTMAN SIR
1.91
STATISTICAL INVENTORY
RECONCILIATION TEST METHOD (QUANTITATIVE)
| 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 |
0.05 gph.
A tank system should not be declared tight when a consistent loss or gain
equals or exceeds this threshold at the 5% level of significance. |
| Applicability |
Gasoline,
diesel.
|
| 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
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Attn: CMS Mailstop F-76
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Tel:
(816) 443-2494
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7300 West Friendly Ave.
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Date
of Evaluation:
10/31/91
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P.O. Box 22087 |
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Greensboro, NC 27420-2087 |
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Tel:
(800) 253-8054
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