(1) Licensing of UST systems. An owner or operator must apply for and renew licenses for UST systems and provide notice of any change in the owner or operator of an UST system in accordance with WAC 173-360A-0200.

(2) Changes to UST systems. Owners and operators must notify the department of the following changes in the status of an UST system in accordance with the applicable requirements of this chapter:

(a) Intent to install an UST system or a tank or piping run (WAC 173-360A-0300(1));

(b) Change in the regulated substance stored in an UST system and, if applicable, demonstration of compatibility (WAC 173-360A-0410);

(c) Change in the release detection method used for a tank or pipe (WAC 173-360A-0600(4));

(d) Temporary closure of an UST system (WAC 173-360A-0800(1));

(e) Emptying of a temporarily closed UST system (WAC 173-360A-0800(2));

(f) Return to operation of a temporarily closed UST system (WAC 173-360A-0800 (5)(b)(ii));

(g) Intent to permanently close an UST system or a tank or piping run (WAC 173-360A-0810(1));

(h) Permanent closure of a partially exempt UST system (WAC 173-360A-0810(5));

(i) Intent to undertake a change-in-service of an UST system (WAC 173-360A-0820(1)); and

(j) Change-in-service of a partially exempt UST system (WAC 173-360A-0820(5)).

(3) UST system services. Owners and operators must report the following UST system services to the department in accordance with the applicable requirements of this chapter:

(a) Installations of UST systems or UST system components (WAC 173-360A-0300);

(b) Assessments of corrosion potential (WAC 173-360A-0310 (3)(c));

(c) Upgrades of existing UST systems (WAC 173-360A-0320);

(d) Upgrades of previously deferred UST systems (WAC 173-360A-0330);

(e) Tests of cathodic protection systems (WAC 173-360A-0430(2));

(f) Internal inspections of lined tanks (WAC 173-360A-0440);

(g) Tightness tests of containment sumps used for interstitial monitoring of piping (WAC 173-360A-0450);

(h) Tightness tests of spill prevention equipment (WAC 173-360A-0460);

(i) Inspections of overfill prevention equipment (WAC 173-360A-0470);

(j) Tests of electronic or mechanical release detection equipment (WAC 173-360A-0480);

(k) Repairs of UST system components (WAC 173-360A-0490);

(l) Tightness tests of secondary containment areas of tanks or piping used for interstitial monitoring (WAC 173-360A-0490 (4)(c));

(m) Tightness tests of tanks (WAC 173-360A-0635);

(n) Tightness tests of piping (WAC 173-360A-0650);

(o) Site evaluations for vapor or groundwater monitoring systems (WAC 173-360A-0660(2) or 173-360A-0665(2));

(p) Site assessments, including site checks (WAC 173-360A-0730);

(q) Decommissioning of UST systems, or tanks or piping runs that are part of an UST system, upon permanent closure (WAC 173-360A-0810(2)); and

(r) Decommissioning of UST systems upon a change-in-service (WAC 173-360A-0820(2)).

(4) Releases from UST systems. Owners and operators must notify the department of the following in accordance with the applicable requirements of this chapter:

(a) All suspected releases (WAC 173-360A-0700);

(b) All spills and overfills resulting in a release that may pose a threat to human health or the environment or that have not been cleaned up within twenty-four hours (WAC 173-360A-0740); and

(c) All confirmed releases that may pose a threat to human health or the environment (WAC 173-360A-0750(1)).

(5) Cleanups of releases from UST systems. Owners and operators must report remedial actions to the department in accordance with chapter 173-340 WAC or as otherwise directed by the department under chapter 90.48 RCW (WAC 173-360A-0750(4)).

(6) Financial responsibility for UST systems.

(a) Owners or operators must demonstrate compliance with financial responsibility requirements in accordance with WAC 173-360A-1045(1) and 173-360A-0200 (3) and (4).

(b) Owners or operators must submit financial responsibility records in accordance with WAC 173-360A-1045 (2) and (3) and 173-360A-0750(3).

(7) Requirements for sellers and lessors.

(a) Any person who sells a tank must notify the new owner of the licensing requirements in WAC 173-360A-0200.

(b) Any person who leases a tank must notify the new operator of the licensing requirements in WAC 173-360A-0200.

(8) Requirements for service providers. Service providers must:

(a) Document the UST system services specified in subsection (3) of this section in accordance with the applicable requirements of this chapter (WAC 173-360A-0940(4));

(b) Notify owners and operators when they determine that the UST system for which they are providing services is not in compliance with the requirements of this chapter in accordance with WAC 173-360A-0940(5); and

(c) Report confirmed releases from UST systems to owners and operators and to the department in accordance with WAC 173-360A-0940(6).

(9) Requirements for product deliverers and waste oil collectors. Product deliverers and waste oil collectors must report any spill or overfill of regulated substances to the owner or operator in accordance with WAC 173-360A-0405(4).