Have you ever wondered what effluent guidelines apply to your wastewater discharges? There are various categorical discharge limits that have been developed by EPA on an industry-by-industry basis outlined in 40 CFR 401 through 471. Each categorical discharge standard refers to several levels of control technologies:
- Best Practicable Control Technology Currently Available (BPT);
- Best Available Technology Economically Achievable (BAT);
- Best Conventional Pollutant Control Technology (BCT);
- New Source Performance Standards (NSPS);
- Pretreatment Standards for New Sources (PSNS); and
- Pretreatment Standards for Existing Sources (PSES).
These control technologies each apply to different situations based on whether the facility is a new source or existing source, as well as whether the facility is a direct discharger (i.e., discharges to waters of the United States [streams, lakes, oceans, etc.]) or an indirect discharger (i.e., discharges to a POTW [municipal wastewater treatment plant]). A useful table summarizing control technology applicability can be found on EPA's website and is summarized below.
|Types of Sites Regulated||BPT, BCT, BAT||NSPS||PSES||PSNS|
|Existing Direct Dischargers||X|
|New Direct Dischargers||X|
|Existing Indirect Dischargers||X|
|New Indirect Dischargers||X|
If you have any questions on categorical discharge limits for your facility or need help permitting your facility's wastewater discharges, contact Trinity's Kansas City office at (913) 894-4500.