Starting January 1, 2021, these protocols will no longer be accepted for any new listing

Some of the NWGLDE Protocols are available for download. They are Adobe Acrobat® PDF files which are zipped to facilitate the download process. In order to open and view the files you will need Adobe Acrobat® Reader® along with a ZIP Utility installed on your computer. A link to both programs can be found on the Downloads page in the Utilities section.

Aboveground Storage Tank Leak Detection Method (A)

Automatic Electronic Line Leak Detector (B)

Automatic Mechanical Line Leak Detector (C)

Automatic Tank Gauging Method (D)

Bulk Underground Storage Tank Leak Detection Method (50,000 Gallons Or Greater) (E)

Continuous In-Tank Leak Detection Method (F)

Continuous Interstitial Line Monitoring Method (Pressure/Vacuum Decay) (G)

Continuous Interstitial Monitoring Method (Liquid Filled) (H)

Continuous Interstitial Tank System Monitoring Method (Pressure/Vacuum Decay) (I)

Continuous Pressurized Piping Leak Detection Method (J)

Interstitial Product Detectors (Liquid-Phase) (K)

Interstitial Tank Tightness Test Method (L)

Line Leak Detection Method for Airport Hydrant and Field Constructed Systems (M)

Line Tightness Test Method (N)

Non-Volumetric Tank Tightness Test Method (Tracer, Ullage, Vacuum Induced Acoustic Signal) (O)

Out-of-Tank Product Detectors (Liquid-Phase) (P)

Out-of-Tank Product Detectors (Vapor-Phase) (Q)

Secondary and Spill Containment Test Methods (R)

Statistical Inventory Reconciliation Test Method (Qualitative, Quantitative) (S)

Volumetric Tank Tightness Test Method (Overfill, Underfill) (T)