(

a) A PRO shall review its plan at least every five years after approval by the department and determine whether revisions to the plan are necessary. (

b) If a PRO determines that revisions to the plan are necessary, the PRO shall submit to the department a revised plan for review and approval employing the procedures set forth in

Section 42984.8. The stewardship organization shall submit the revised plan to the department pursuant to this subdivision at least months prior to the review deadline outlined in subdivision (c). The revised plan shall include a cover letter that summarizes the revisions to the plan within days of the review deadline outlined pursuant to subdivision (a). (

c) If a PRO determines that no revisions to the plan are necessary, the PRO shall send a letter to the department months prior to the review deadline outlined in subdivision (a), explaining that the PRO has reviewed the plan and determined that no revisions are needed. The department may disapprove the PRO’s determination within days of receipt of that determination if the department concludes that the PRO cannot implement the objectives of this

chapter without revising the plan. If the department disapproves the PRO’s determination, the PRO shall submit to the department a revised plan for review and approval employing the procedures set forth in

Section 42984.8. The PRO shall submit the revised plan pursuant to this subdivision within days of receipt of the department’s disapproval, unless the department determines that additional time is needed.