Laserfiche WebLink
feasible. In addition, to prevent inadequately treated wastewater from being discharged to <br /> receiving waters, Dischargers are required to document in the NOI that the discharge of <br /> inadequately treated waste will be reliably prevented. <br /> C. Technology-Based Effluent Limitations <br /> If any extracted and treated groundwater receives less than proper treatment,the pollutants listed <br /> in Table F-2 may be discharged at levels that have a reasonable potential to cause or contribute <br /> to an exceedance of any applicable criterion established by the USEPA pursuant to CWA section <br /> 303. <br /> 1. Scope and Authority <br /> The CWA requires technology-based effluent limitations(TBELs)based on several levels of <br /> controls: <br /> • Best practicable treatment control technology(BPT)represents the average of the best <br /> performance by plants within an industrial category or subcategory.BPT standards apply to <br /> toxic,conventional,and non-conventional pollutants. <br /> • Best available technology economically achievable(BAT)represents the best existing <br /> performance of treatment technologies that are economically achievable within an industrial <br /> point source category. BAT standards apply to toxic and non-conventional pollutants. <br /> • Best conventional pollutant control technology(BCT)represents the control from existing <br /> point sources of conventional pollutants including BOD,TSS, fecal coliform,pH,and oil <br /> and grease. The BCT standard is established after considering the"cost reasonableness"of <br /> the relationship between the cost of attaining a reduction in effluent discharge and the <br /> benefits that would result,and also the cost effectiveness of additional industrial treatment <br /> beyond BPT. <br /> • New source performance standards(NSPS)represent the best available demonstrated control <br /> technology standards.The intent of NSPS guidelines is to set limitations that represent state- <br /> of-the-art treatment technology for new sources. <br /> The CWA requires USEPA to develop effluent limitations,guidelines,and standards(ELGs) <br /> representing application of BPT,BAT,BCT,and NSPS. Section 402(a)(1)of the CWA and 40 <br /> CFR 1253 authorize the use of Best Professional Judgment(BP�to derive TBELs on a case- <br /> by-case basis where ELGs are not available for certain industrial categories and/or pollutants of <br /> concern.Where BPJ is used,the permit writer must consider specific factors outlined in 40 CFR <br /> 125.3. <br /> 2. Applicable Technology-Based Effluent Limitations <br /> Regional Water Board staffused BPJ in developing TBELs in this Order. BPJ is defined as the <br /> highest quality technical opinion developed by a pernut writer after consideration of all <br /> reasonably available and pertinent data or information that forms the basis for the terms and <br /> conditions of a NPDES pernut.The authority for BPJ is contained in CWA section 402(a)(1). <br /> Attachment F—Fact Sheet F-13 <br /> For VOC and Fuel General NPDES Permit No.CAG912002 <br />