This proposed regulation would establish technology-based effluent limitations and pretreatment standards for wastewater discharges associated with the operation of new and existing metal products and machinery facilities.
Effluent guidelines are specific to each industry.
Although the effluent limitations are based on specific process or treatment technologies to control pollutant discharges, EPA does not require dischargers to use a specific technology. Individual facilities may meet the requirements by adopting treatment technologies and processes that best suit their needs. The effluent guidelines program is one of EPA's most successful environmental protection programs. Since 1974, EPA has promulgated effluent limitations guidelines and standards for more than 50 industrial categories. EPA is not proposing pretreatment standards for the Non-Chromium Anodizing, the Railroad Line Maintenance, and the Shipbuilding Dry Dock subcategories based on the low levels of pollutants discharged by the facilities in these subcategories.