Issue Date:  November 22, 1995
Revision Date:  September 2, 2008

Estabrook EZY CHEK Systems
(originally listed as Horner EZY CHEK)



Estabrook EZY Chek Systems no longer manufactures or supports the use of this method.

Certification Leak rate of 0.1 gph with PD = 95.79% and PFA = 4.21%.
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, aviation fuel, fuel oil #4.
Tank Capacity Maximum of 12,000 gallons. 
Tank must be between 98 and 100% full.
Waiting Time Minimum of 8 hours between delivery and testing. 
There must be no product dispensing or delivery during waiting time.
Test Period Minimum of 1 hour, 40 minutes (33 minutes monitor mode and 1 hour, 7 minutes test mode). 
At the conclusion of test mode, data are checked for the manufacturer's stop test criteria. 
If data do not meet the criteria, testing must continue. 
Test data are acquired and recorded by system's computer. 
Leak rate is calculated from last 1 hour, 7 minutes of test period data. 
There must be no dispensing or delivery during test.
Temperature Average for product is determined by a resistance temperature detector (RTD).
Groundwater Depth to groundwater in tank excavation backfill must be determined. 
If groundwater is above bottom of tank, product level must be adjusted to provide a minimum net pressure of 1 psi at bottom of tank during test. If this cannot be accomplished, then the tank cannot be tested using this system.
Calibration Load cell must be calibrated in accordance with manufacturer's instructions before each use.
Comments Not evaluated using manifolded tank systems. 
Tests only portion of tank containing product. 
As product level is lowered, leak rate in a leaking tank decreases (due to lower head pressure). 
Consistent testing at low levels could allow a leak to remain undetected. 
EPA leak detection regulations require testing of the portion of the tank system which routinely contains product.


Estabrook EZY CHEK Systems

Evaluator:  W. A. Kibbe and Associates

1505 Woodside Ave.

Tel:  (517) 797-2425

Essexville, MI  48732

Date of Evaluation:  06/25/90

Tel:  (989) 891-9868



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Equipment should be installed and operated in accordance with all applicable laws and regulations.  For full details, please refer to our expanded "DISCLAIMER" page.