(1) The department must adopt rules as necessary for the purpose of implementing, administering, and enforcing this chapter. The department must by rule establish fees, to be paid annually by a battery stewardship organization, that are adequate to cover the department's full costs of implementing, administering, and enforcing this chapter and allocates costs between battery stewardship organizations, if applicable. All fees must be based on costs related to implementing, administering, and enforcing this chapter, not to exceed expenses incurred by the department for these activities.

(2) The responsibilities of the department in implementing, administering, and enforcing this chapter include, but are not limited to:

(a) Reviewing submitted stewardship plans and plan amendments and making determinations as to whether to approve the plan or plan amendment;

(i) The department must provide a letter of approval for the plan or plan amendment if it provides for the establishment of a stewardship program that meets the requirements of RCW 70A.555.020 through 70A.555.080;

(ii) If a plan or plan amendment is rejected, the department must provide the reasons for rejecting the plan to the battery stewardship organization. The battery stewardship organization must submit a new plan within 60 days after receipt of the letter of disapproval; and

(iii) When a plan or an amendment to an approved plan is submitted under this section, the department shall make the proposed plan or amendment available for public review and comment for at least 30 days;

(b) Reviewing annual reports submitted under RCW 70A.555.090 within 90 days of submission to ensure compliance with that section;

(c)(i) Maintaining a website that lists producers and their brands that are participating in an approved plan, and that makes available to the public each plan, plan amendment, and annual report received by the department under this chapter;

(ii) Upon the date the first plan is approved, the department must post on its website a list of producers and their brands for which the department has approved a plan. The department must update the list of producers and brands participating under an approved program plan based on information provided to the department from battery stewardship organizations; and

(d) Providing technical assistance to producers and retailers related to the requirements of this chapter and issuing orders or imposing civil penalties authorized under RCW 70A.555.110 where the technical assistance efforts do not lead to compliance by a producer or retailer.

(3) Beginning January 1, 2032, and every five years thereafter, after consultation with battery stewardship organizations, the department may by rule increase the minimum recycling efficiency rates established in RCW 70A.555.050 based on the most economically and technically feasible processes and methodology available.