Form 414 at a glance
What it is: ADEM Form 414 is the ADEM 30 DAY STATISTICAL INVENTORY RECONCILIATION (SIR) LOG, which allows you to record up to 6 ADEM Unique Tank Numbers.
Who signs: Signature of owner/operator.
A filled-in Form 414 example: one tank that passes

How to fill out Form 414, box by box
FOR THE PERIOD FROM and Fac # SIRMON Date
Site, owner and SIR vendor
ADEM Unique Tank Numbers
30 Day SIR Vendor Results: pass, fail or inconclusive

For Leak Threshold, Minimum Detectable Leak Rate, and Estimated Leak Rate, values must be in gallons per hour (gph).
The Minimum Detectable Leak Rate (MDL) is the smallest leak rate the SIR vendor can determine which meets the required minimum probability of detection of 95% using 30 days of inventory data provided to the SIR vendor.
(2) The Leak Threshold (LT) is one-half the Minimum Detectible Leak Rate (MDL).
The Estimated Leak Rate (ELR) is the amount the tank appears to be losing that is calculated by the SIR vendor using 30 days of inventory data provided to the SIR vendor.
(4) A pass occurs when the ELR is less than the LT and the MDL is less than or equal to the third-party certified leak rate.
(6) A fail occurs when the ELR is greater than or equal to the LT and the MDL is less than or equal to the third-party certified leak rate.
(5) An inconclusive occurs when the MDL is greater than the third-party certified leak rate.
If, for any reason, the test is neither pass nor fail, the inconclusive column must be checked under the 30 Day SIR Vendor Results.
Certification and signature of owner/operator

“I certify under penalty of law that I am familiar with the information submitted on this form and that based on my inquiry of those individuals immediately responsible for obtaining the information I believe that the information is true, accurate, and complete.” Sign as owner/operator and enter the Date.
More rules for Form 414
The SIR method used must be approved by ADEM. Visit the NWGLDE website at www.nwglde.org to view a list of release/leak detection equipment/methods that ADEM approves for use in Alabama. Each SIR method listing includes the third-party certified leak rate and threshold.
Keep a record copy of 30 Day SIR Vendor Results until the next 30 Day SIR Vendor Results are received.
A record copy of the Leak Threshold (LT), Minimum Detectable Leak Rate (MDL), and Estimated Leak Rate (ELR) must be kept on file for each tank until the next 30 day SIR Vendor Results are received. If the 30 day SIR Vendor Results are not on record, the tank system(s) is not in compliance with leak detection requirements for that 30 day period.
This form is now available for electronic submittal using the Alabama Environmental Permitting and Compliance System or AEPACS.
After a fail or inconclusive result
Any 30 Day SIR Vendor Results indicate a fail or inconclusive for any tank system
If any 30 Day SIR Vendor Results indicate a fail or inconclusive for any tank system, you are required to perform an investigation of all tank systems that SIR Vendor indicates a fail or inconclusive within 7 days after receipt of the 30 Day SIR Vendor Results.
The investigation indicates that a suspected release caused the tank system(s) fail or inconclusive
If the investigation indicates that a suspected release caused the tank system(s) fail or inconclusive, you are also required to: (a) Report a suspected release to ADEM at 334/270-5655 within 24 hours after completion of investigation; (b) Perform a tightness test on tank system(s) with a suspected release within 7 days after receipt of 30 Day SIR Vendor Results; (c) Submit system tightness test results, results of investigation and completed ADEM 30 Day SIR Log to ADEM within 10 days after receipt of 30 Day SIR Vendor Results.
The investigation indicates that factors other than a suspected release caused the tank system(s) fail or inconclusive
If the investigation indicates that factors other than a suspected release caused the tank system(s) fail or inconclusive, you are only required to: (a) Submit results of investigation and completed ADEM 30 Day SIR Log to ADEM within 10 days after receipt of 30 Day SIR Vendor Results.
A second consecutive 30 Day SIR Vendor Results does not pass
If the investigation indicates that factors other than a suspected release caused the tank system(s) fail or inconclusive, and a second consecutive 30 Day SIR Vendor Results indicates that the same tank system did not pass (fail or inconclusive), you are required to: (a) Report a suspected release to ADEM at 334/270-5655 within 24 hours of receipt of the second 30 Day SIR Vendor Results; (b) Perform a tightness test on the tank system(s), where 30 Day SIR Vendor Results indicated the same tank system(s) did not pass, within 7 days after receipt of the second 30 Day SIR Vendor Results; (c) Submit system tightness test results and completed ADEM 30 Day SIR Log to ADEM within 10 days after receipt of the second 30 Day SIR Vendor Results that indicated the same tank system(s) did not pass.
Common questions about Form 414
Where do I file it?
When required by the Reporting and Recordkeeping Requirements section, submit a completed copy of this form to: Groundwater Branch, PO Box 301463 Montgomery, AL 36130-1463, or fax to: (334) 270-5631, or email to: USTcompliance@adem.alabama.gov.
Where to get help with Form 414
Questions on how to complete this form should be directed to the Groundwater Branch, UST Compliance Section at (334) 270-5655.
Sources
[1] ADEM Form 414 (revised 3/18)(06/22 m3), Alabama Department of Environmental Management (the Official source link on this page).



