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Effluent Guidelines

Organic Chemicals, Plastics, and Synthetic Fibers (OCPSF)

organic chemical factory

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This rule establishes effluent limitations guidelines (ELGs) for new and existing discharges from the organic chemicals, plastics, and synthetic fibers (OCPSF) manufacturing industry. The regulation is at 40 CFR 414. The OCPSF ELGs help reduce discharges of conventional pollutants, like biochemical oxygen demand (BOD) and total suspended solids (TSS). The regulation also helps reduce the discharge of toxic pollutants like ethylbenzene, anthracene, vinly chloride, total cyanide, and total zinc.


What is OCPSF?

The OCPSF category includes more than 1,000 chemical facilities producing over 25,000 end products, such as benzene, toluene, polypropylene, polyvinyl chloride, chlorinated solvents, rubber precursors, rayon, nylon, and polyester. The OCPSF industry is large and diverse, and many plants are highly complex. Some plants produce chemicals in large volumes through continues chemical processes, while others produce only small volumes of "specialty" chemicals through batch chemical processes.

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Facilities Covered

The OCPSF regulation applies to process wastewater discharges resulting from the manufacture of the products or product groups listed in the rayon fibers, other fibers, thermoplastic resins, thermosetting resins, commodity organic chemicals, bulk organic chemicals, and specialty organic chemicals subcategories. The products are included within the following U.S.Department of Commerce Bureau of the Census Standard Industrial Classificationsystem (SIC) groups:

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Final Rule

The regulation is published in the Code of Federal Regulations at 40 CFR Part 414 - Organic Chemicals, Plastics, and Synthetic Fibers.

The OCPSF rule was promulgated in November 1987 and then amended. The major Federal Register notices are summarized here. Post-promulgation correction notices and amendments for the OCPSF rule are as follows:

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Guidance and Background Documents

In April 2005, EPA issued a guidance document to help permit writers and regulated facilities implement the OCPSF regulation. This document is possibly helpful for interpreting the extensive chemical nomenclature.

Fact Sheets
Fact Sheet
Pretreatment Streamlining Rule Fact Sheet 4.0: Equivalent Concentration-Based Limits for Flow-Based Standards (PDF) (4 pp., 78 K)
Guidance Document
Guidance Document: Product and Product Group Discharges Subject to Effluent Limitations and Standards (PDF) (110 pp., 760K)

EPA published technical and economic reports to support the final rule and its amendments. Some of the key regulation and support documents are posted here:

Development Documents
Development Document for 1987 Effluent Limitations Guidelines and Standards for OCPSF, Volume 1 (PDF) (544 pp., 22.8MB; EPA 440-1-87-009 (October 1987)
Development Document for 1987 Effluent Limitations Guidelines and Standards for OCPSF, Volume 2 (PDF) (718 pp., 25.1MB; EPA 440-1-87-009 (October 1987)
Supplement to the Development Document (PDF) for the Effluent Limitations Guidelines and New Source Performance Standards for the Organic Chemicals, Plastics, and Synthetic Fibers Point Source Category - Final (PDF) (173 pages, 3.1MB; EPA 821-R-93-007) (May 1993)
Economic Documents:
  • Re-Evaluation of the Economic Impact Analysis of Effluent Limitations Guidelines for the Organic Chemicals, Plastics, and Synthetic Fibers Industry, May 1993, (EPA-821-R-93-008)
  • Economic Impact Analysis of Effluent Limitations Guidelines for the Organic Chemicals, Plastics, and Synthetic Fibers Industry," September 1987, (EPA-440/2/87-007)

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Potential Updates

A new rulemaking is underway to address wastewater discharges from facilities that manufacture certain chlorinated hydrocarbons that are regulated under OCPSF. EPA refers to the new rulemaking as Chlorine and Chlorinated Hydrocarbon Manufacturing Effluent Guidelines.

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Additional Information/Contacts

For additional information regarding OCPSF effluent guidelines, please see OCPSF contacts.

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316(b) | Analytical Methods | NPDES


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