Cal. Health & Safety Code § 25144.6
(b) Reusable soiled textile materials that meet all of the following requirements are exempt from Section 25205.5 and from Article 6 (commencing with Section 25160) and Article 6.5 (commencing with Section 25167.1):
(c) Notwithstanding Sections 25201 and 25245, a facility laundering or using comparable methods of cleaning reusable soiled textile materials and performing the pretreatment necessary to remove metals and organics from the wastewater that results from the wash process is not required to obtain a hazardous waste facilities permit or other grant of authorization, and is exempt from the requirements of Article 12 (commencing with Section 25245), if the facility meets all of the following requirements:
(6)