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Issue Date: August 23, 1999
Revision Date: March 10, 2000
EnviroSIR LLC
EnviroSIR
Version 1.0
STATISTICAL INVENTORY
RECONCILIATION TEST METHOD (QUANTITATIVE)
| Certification |
Leak rate of 0.2
gph with PD = 97.4% and PFA = 0.1%
Leak rate of 0.1 gph with PD = 97.4% and PFA = 2.6% |
| Leak
Threshold |
0.15 gph for leak
rate of 0.2 gph.
0.05 gph for leak rate of 0.1 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 45,000
gallons for single tanks.
Maximum of 45,000 gallons cumulative capacity for manifolded tank systems
with no more than 4 tanks in the system. |
| Data
Requirement |
Minimum of 28
days of usable product level and flow through data. |
| System
Features |
Method of data
analysis that system employs, and was used during evaluation process, is
exclusive of any external control by vendor.
System consists of a fully automated software package with embedded
algorithms for conducting leak detection testing. Consequently, third
party evaluation procedure demonstrated that system can be used in-house
with no requirement for direct vendor participation, except in certain
rare cases when system generates a flag that requires a vendor trained and
certified specialist to analyze data and make the final decision.
System incorporates context-sensitive "Help" information. |
| Evaluation
Features |
Evaluator tested
this system for in-house use. Computer program disk along with
instructional documentation was supplied by vendor to evaluator.
Evaluator, without vendor involvement, analyzed required data and
performed evaluation using program disk and accompanying documentation.
Vendor was not present during evaluation.
This system was also evaluated using a leak threshold of 0.1gph for leak
rate of 0.2 gph and is available at the user's request. |
| Comments |
53% of data sets
evaluated were from manifolded tank systems.
Of 43 data sets submitted for evaluation, all were analyzed with
conclusive results.
Median monthly throughput for tanks evaluated was 18,897 gallons.
Leak rates of 0.05, 0.10, and 0.20 gph were used in evaluation. Data sets
evaluated were supplied by evaluator. |
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EnviroSIR LLC
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Evaluator: Ken Wilcox
Associates
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1003 East Saint Mary Blvd., P.O. Box 52565
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Tel: (816) 443-2494
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Lafayette, LA 70505
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Date of Evaluation: 10/20/98
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Tel: (337) 935-0205
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