Issue Date: April 25, 2012
Fairbanks Environmental Ltd.
Wetstock Wizard Version 4.4
Statistical Inventory Reconciliation Test Method (Qualitative)
| Certification | Leak rate of 0.2 gph with PD > 99% and PFA < 1% for both single and manifolded tank systems. |
|---|---|
| Leak Threshold | 0.10 gph. If the absolute value of the calculated leak rate (gain or loss) is less than the leak threshold and the minimum detectable leak rate is less than or equal to 0.2 gph, the test result is "pass." If the absolute value of the calculated leak rate is greater than or equal to the leak threshold, the result is "fail." If the minimum detectable leak rate exceeds 0.2 gph and the absolute value of the calculated leak rate is less than the leak threshold, the test result is "inconclusive." |
| Applicability | Gasoline, diesel, kerosene. |
| 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 system. |
| Data Requirement | Minimum of 30 days of product level and throughput data. |
| Comments | Inventory data was submitted by vendor to evaluator who adjusted data and returned to vendor for analysis. 49% of data sets were from manifolded tank systems. Of 41 data sets submitted for evaluation, 36 were analyzed with conclusive results. Median monthly throughput of tanks evaluated was 25,173 gallons. Leak rates of 0.05, 0.1, and 0.2 gph were used in evaluation. Results of evaluation is applicable only for tanks using ATGs to collect data. |
- Faribanks Environmental, Ltd.
The Technology Management Center
Moss View Lane
Skelmersdale, Lancashire, UK
Phone +44 (0) 1695 51775 - Evaluator: Ken Wilcox Associates
Tel: (816) 443-2494
Date of Evaluation: 11/10/2004 (rev. 8/10/2006)
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