(1) Ecology must be notified in writing as soon as possible and prior to completion of any significant change which could affect the plan. If the change will reduce the facility's ability to implement the plan, the plan holder must also provide a schedule for the return of the plan to full implementation capability.

(a) A significant change includes, but is not limited to:

(i) A change in the owner or operator of the facility;

(ii) A change in the types of oil handled at the facility;

(iii) A five percent or greater change in the facility's oil handling capacity;

(iv) Noncompliance with the Federal Oil Pollution Act of 1990;

(v) Noncompliance with state financial responsibility requirements developed under chapter 88.40 RCW; and

(vi) A substantial change in oil spill prevention technology installed at the facility, or other substantial changes to facility equipment, operations, personnel procedures, or any other change, including compliance with amended or new rules adopted by ecology, which substantially affects the level of risk described pursuant to WAC 173-180-630.

(b) Changes which are not considered significant include, but are not limited to, minor variations (less than five percent) in oil handling capacity, maintenance schedules, and operating procedures, provided that none of these changes will increase the risk of a spill.

(c) The facility must update the plan's list of discharges, as required by WAC 173-180-630, within thirty calendar days after an oil discharge by the facility in excess of twenty-five barrels (one thousand fifty gallons).

(d) A facsimile will be considered written notice for the purposes of this subsection.

(e) Failure to notify ecology of significant changes must be considered noncompliance with this chapter and subject to enforcement provisions of chapter 90.56 RCW.

(2) If ecology finds that, as a result of the change, the plan no longer meets approval criteria pursuant to WAC 173-180-650, ecology may, at its discretion, place conditions on approval or revoke approval in accordance with WAC 173-180-650. Ecology may also require the plan holder to amend its plan to incorporate the change.

(3) Within thirty calendar days of making a change to the prevention plan, the facility owner or operator must distribute the amended page(s) of the plan to ecology and other plan holders.

(4) Plans must be reviewed by ecology at least every five years pursuant to WAC 173-180-650. Plans must be submitted for reapproval unless the plan holder submits a letter requesting that ecology review the plan already in ecology's possession. The plan holder must submit the plan or such a letter at least sixty-five calendar days in advance of the plan expiration date.

(5) Ecology may require a new review and approval process for a prevention plan following any spill at the facility.