Issue Date: November 22, 1995
Revision Date: September 10, 2004

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

EZY-Chek I


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

Certification Leak rate of 0.1 gph with PD = 99% and PFA = 1%.
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 minimum 100% full.
Waiting Time Minimum of 6 hours between delivery and testing. Minimum of 3 hours between "topping off" and testing. 
Total minimum waiting time is 6 hours. 
There must be no product dispensing or delivery during waiting time.
Test Period Minimum of 1 hour, 30 minutes (30 minute monitor period, plus 1 hour test period). 
Testing must continue until data meets manufacturer's stop test criteria. 
Volume data are collected and recorded by a strip chart recorder. Leak rate is calculated from data of last 1 hour of test period. 
There must be no dispensing or delivery during test.
Temperature Average for product is determined by a resistance temperature detector (RTD) and displayed on a LCD readout.
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 net pressure of 2-4 psi at bottom of tank. 
Groundwater level must be stable prior to and during test.
Calibration Level sensors must be calibrated in accordance with manufacturer's instructions before each test.
Comments Not evaluated using manifolded tank systems.


Estabrook EZY CHEK Systems

Evaluator:   W. A. Kibbe and Associates

1505 Woodside Ave.

Tel:  (517) 797-2425

Essexville, MI  48732

Date of Evaluation:  10/03/90

Tel:  (989) 891-9868



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