ABSTRACT

Discharge Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379 9.7.1 Applicability, Description of the Metal Finishing Point Source Category . . . . . 379 9.7.2 Monitoring Requirements of Metal Finishing Ef uent Discharges . . . . . . . . . . 380 9.7.3 Ef uent Limitations Based on the BPT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380 9.7.4 Ef uent Limitations Based on the BAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 9.7.5 Pretreatment Standards for Existing Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . 381 9.7.6 New Source Performance Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382 9.7.7 Pretreatment Standards for New Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383

9.8 Specialized De nitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387

The metal nishing industry is one of many industries subject to regulation under the Resource Conservation and Recovery Act (RCRA)1,2 and the Hazardous and Solid Waste Amendments (HSWA).3 It has also been subject to extensive regulation under the Clean Water Act (CWA).4 Compliance with these regulations requires highly coordinated regulatory, scienti c, and engineering analyses to minimize costs.5