On August 8, 2012, the Department of Ecology (Ecology) adopted
changes to Chapter 173-360 WAC, Underground Storage Tank (UST)
Regulations. The changes will be published in the Washington State
Register on September 5, 2012, and become effective on October 1, 2012.
To view the Rule Adoption Notice in Korean, see
개정 법규 알림 .
Text of Rule Changes
To view the text of the adopted changes to Chapter 173-360 WAC,
Summary of Rule Changes
The adopted changes to
Chapter 173-360 WAC:
- Authorize Ecology to stop regulated substances from being
delivered to UST systems that do not comply with regulatory
- Establish an operator training program for individuals who
operate and maintain UST systems. Current operators must be trained
by December 31, 2012.
- Require emergency response signage at all UST facilities.
- Require secondary containment and interstitial monitoring of tanks and pipes installed
or replaced after October 1, 2012.
- Require containment under dispenser systems if the dispenser,
dispenser system, or underground piping connected to the dispenser
system is installed or replaced after October 1, 2012.
Persons Affected by the Rule Changes
The rule changes affect:
Persons who own or operate UST systems.
Persons who provide services to owners and operators.
Persons who deliver product to, or collect waste oil from, UST
Persons who train operators of UST systems.
Response to Comments on Rule Proposal
Ecology’s response to comments received during the public comment
period is now available. The response is contained within the
Concise Explanatory Statement.
The purpose of the Concise Explanatory Statement is to:
Provide reasons for adopting the rule.
Describe any differences between the proposed and adopted
Provide Ecology’s response to public comments on the proposed
This documentation is required by the Administrative Procedure Act
The following economic and environmental analyses were performed on
the adopted rule changes:
Ecology has developed an
for the adopted rule changes. The purpose of this plan is to inform
those who must comply with amended rule how Ecology intends to:
Implement and enforce
the amended rule.
Inform and educate
persons affected by the amended rule.
Promote and assist
voluntary compliance with the amended rule.
with the amended rule.
Train and inform
Ecology staff about the amended rule.
This information is required by the Administrative Procedure Act (RCW
Rule-Making Order (CR103)
Rule Adoption Notice
Ecology Rule Page
Focus on Emergency Signage Required for UST Sites
Focus on Delivery Prohibition or “Red Tagging”
Focus on the new UST Secondary Containment Requirements