Wyoming Statutes Title 35. Public Health and Safety § 35-11-1429. Tank requirements; rulemaking authority

(a) Cathodic protection shall be installed and operated on all internally lined underground storage tanks no later than June 30, 2008.

(b) All underground storage tank systems that dispense more than five hundred thousand (500,000) gallons per month of a regulated substance shall be replaced with double wall tanks and lines with interstitial leak monitoring no later than June 30, 2012, or thirty (30) years from the date of installation of the underground storage tank, whichever is later.

(c) Double wall underground storage tanks and lines with interstitial leak monitoring shall be installed whenever any underground storage tank is installed.

(d) Double wall underground storage tank system lines with interstitial leak monitoring shall be installed whenever any line is installed on any underground storage tank system. Except piping connected to field-constructed underground storage tank systems with a capacity exceeding fifty thousand (50,000) gallons or piping that is used for an airport hydrant system, if existing single wall underground piping connected to an underground storage tank system fails due to corrosion or fails and has been recalled by the manufacturer, the entire run of single wall piping shall be replaced with double wall piping with interstitial monitoring regardless of the length of piping requiring repair.

(e) The council may promulgate rules and regulations to administer this section after recommendation from the director.

(f) A double wall and interstitially monitored underground storage tank or underground piping installed after December 1, 2005, shall be interstitially monitored for the lifetime of the tank or piping.

(g) Except essential homeland security systems, emergency generator systems and systems used for other disaster relief efforts, if a new piping interstitial monitoring system is installed and sump sensors are used as standalone automatic leak detectors, the system shall be configured to shut off the flow of product in that piping run when a sump sensor triggers an alarm.