Wat. Code, § 16102

(a) A regional board shall review, in accordance with the reimbursement requirement described in subdivision (c), a watershed improvement plan developed pursuant to Section 16101 and may approve the plan, including any appropriate conditions to the approval, if the regional board finds that the proposed watershed improvement plan will facilitate compliance with water quality requirements. A regional board’s review and approval of the watershed improvement plan shall be limited to components described in paragraphs (1), (2), (3), and (5) of subdivision (d) of Section 16101.

(b) A regional board may not approve a proposed watershed improvement plan that includes a geographical area included in an existing approved watershed improvement plan unless the regional board determines that it is infeasible to amend either the proposed watershed improvement plan or the approved watershed improvement plan to achieve the purposes of this chapter.

(c) The entity or entities that develop a watershed improvement plan that is submitted to the regional board for approval shall reimburse the regional board for its costs, including the costs to review and oversee the implementation of the plan, if nonstate funds are not available to cover the costs of the review and oversight. For the purpose of this paragraph, the state board shall adopt a fee schedule by emergency regulation in the manner prescribed in paragraph (2) of subdivision (f) of Section 13260. Fees collected pursuant to this section shall be deposited in the Waste Discharge Permit Fund established by Section 13260.

(d) A regional board may, if it deems appropriate, utilize provisions of approved watershed improvement plans to promote compliance with one or more of the regional board’s regulatory plans or programs.

(e) Unless a regional board incorporates the provisions of a watershed improvement plan into waste discharge requirements issued to a permittee, the implementation of a watershed improvement plan by a permittee shall not be deemed to be compliance with those waste discharge requirements.