Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 667 - Standards For Owners And Operators Of Hazardous Waste Facilities Operating Under A Standardized License
Subchapter J - Tank Systems
Section NR 667.0196 - What are the required devices for secondary containment and what are their design, operating and installation requirements?
Universal Citation: WI Admin Code ยง NR 667.0196
Current through August 26, 2024
(1) Secondary containment for tanks shall include one or more of the following:
(a) A liner (external to the tank).
(b) A double-walled tank.
(c) An equivalent device. Maintain
documentation of equivalency at the facility.
(2) External liner systems shall be:
(a) Designed or operated to contain 100
percent of the capacity of the largest tank within its boundary.
(b) Designed or operated to prevent run-on or
infiltration of precipitation into the secondary containment system unless the
collection system has sufficient excess capacity to contain run-on or
infiltration. The additional capacity shall be sufficient to contain
precipitation from a 25-year, 24-hour rainfall event.
(c) Free of cracks or gaps.
(d) Designed and installed to surround the
tank completely and to cover all surrounding earth likely to come into contact
with the waste if the waste is released from the tank or tanks (that is,
capable of preventing lateral as well as vertical migration of the
waste).
(3) Double-walled tanks shall be:
(a) Designed as
an integral structure (that is, an inner tank completely enveloped within an
outer shell) so that any release from the inner tank is contained by the outer
shell.
(b) Protected, if
constructed of metal, from both corrosion of the primary tank interior and of
the external surface of the outer shell.
(c) Provided with a built-in continuous leak
detection system capable of detecting a release within 24 hours.
Disclaimer: These regulations may not be the most recent version. Wisconsin may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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