Revision date: (month/day), 1999

EnviroSIR LLC

EnviroSIR Version 1.0

 

STATISTICAL INVENTORY RECONCILIATION TEST METHOD (QUANTITATIVE)

  Certification: Leak Rate of 0.2 gph, Leak Threshold of 0.10 gph:
PD=99.9% and PFA=0.1% for both single and manifolded tanks.

Leak Rate of 0.2 gph, Leak Threshold of 0.15 gph:
PD=97.4% and PFA=0.1% for both single and manifolded tanks.

Leak Rate of 0.1 gph, Leak Threshold of 0.05 gph:
PD=97.4% and PFA=2.6% for both single and manifolded tanks.
 Leak Threshold: 0.10 gph and 0.15 gph (User Selectable) for the 0.2 gph Leak Rate.
0.05 gph for the 0.1 gph Leak Rate.

A system should not be declared tight if the test results indicate a loss or gain that equals or exceeds the declared threshold.
 Applicability: Gasolines, diesels, and kerosene.
 Tank Capacity: Maximum of 45,000 gallons for single tank or manifold tank systems with no more than four tanks in the system.
 Data Requirement: Minimum of 28 days of data is required.
 System Features: The method of data analysis that this system employs, and that was used during the evaluation process, is exclusive of any external control by the vendor. It consists of a fully automated software package with embedded algorithms for conducting leak detection testing. Consequently, the third party evaluation procedure demonstrated that this product can be used as an in-house SIR system with no requirement for direct vendor participation. However, the method will in certain exceptional cases generate a flag that requires an EnviroSIR trained and certified specialist to carefully analyze the data and make a final decision. The vendor states that this software is Y2K compliant.
 Evaluation Features:  The evaluator tested this method as an in-house SIR system. The SIR method computer program disk along with instructional documentation was supplied by the vendor to the evaluator. The evaluator, without vendor involvement, analyzed the required data and performed the evaluation using the program disk and accompanying documentation. The program also incorporates context-sensitive Help information. The vendor was not present during this evaluation.
 Comments: Evaluated for manifold tank systems using an acceptable protocol.
53% of data sets evaluated were from manifold tank systems.
Of 43 data sets submitted for evaluation, all were analyzed with conclusive results.
Median monthly throughput of tanks evaluated was 18,897 gallons.
Leak rates of 0.05, 0.10, and 0.20 gph were used in the evaluation.
Data sets evaluated were supplied by the evaluator.
EnviroSIR LLC
1003 East Saint Mary Blvd.
P.O. Box 52565
Lafayette, LA 70505
Tel: (318) 233-2383		 Evaluator: Ken Wilcox Associates, Inc.
Tel: (816) 443-2494
Date of Evaluation: 10/20/98



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