Section 117520 Of Article 4. Pollution By Vessels From California Health And Safety Code >> Division 104. >> Part 13. >> Chapter 4. >> Article 4.

. It is not the intent of the Legislature in enacting this article to preempt the field of pollution by vessels, and the provisions of this article do not prohibit the enactment or enforcement of any ordinance by any city, county, or district having the power to regulate pollution by vessels, that is stricter than the provisions of this article.