For your information, specifically those involved with pretreatment programs and who have Centralized Waste Treatment (CWT) facilities in your jurisdiction.
Download a set of final recommended Best Management Practices (BMPs) for Centralized Waste Treatment (CWT) – Subcategory D Facilities in California. CWTs treat hazardous and nonhazardous wastes (e.g. industrial tank residuals called “tank bottoms,” oil field operations wastes, etc.) and are managed by POTWs through their industrial pretreatment programs. The major issue surrounding the acceptance by POTWs of the discharge from CWT facilities is their potential impact on water reuse programs. There are significant risk management advantages if POTWs take a collective position on the requirements for monitoring/testing, treatment (including provisions for emergency response), and minimum requirements for managing the discharge by CWTs to POTW systems.