For the purposes of this chapter, “NPDES permit” means a permit issued under the national pollutant discharge elimination system program in accordance with the Clean Water Act (33 U.S.C.A. Sec. 1251 et seq.).
Source:
Section 13399.43, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=WAT§ionNum=13399.43..