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Overview of the Metal Products and Machinery Effluent Guidelines Anaheim, CA Michael C. Ebner U. S. Environmental Protection Agency April 3, 2001 Overview.

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Presentation on theme: "Overview of the Metal Products and Machinery Effluent Guidelines Anaheim, CA Michael C. Ebner U. S. Environmental Protection Agency April 3, 2001 Overview."— Presentation transcript:

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2 Overview of the Metal Products and Machinery Effluent Guidelines Anaheim, CA Michael C. Ebner U. S. Environmental Protection Agency April 3, 2001 Overview of the Metal Products and Machinery Effluent Guidelines Anaheim, CA Michael C. Ebner U. S. Environmental Protection Agency April 3, 2001

3 What are Effluent Guidelines? q National industrial wastewater regulations for both direct and indirect dischargers q Industry Specific q Numerical, technology performance-based limitations q Economically Achievable

4 What is the Metal Products and Machinery (MP&M) Effluent Guideline? q The proposed MP&M rule covers facilities that manufacture, rebuild and maintain metal parts, products and machines. q Initially, MP&M rulemaking was divided into two phases. q Phase I regulation was proposed May 30, q Combined rule proposed on January 3, 2001.

5 Purpose of MP&M Rule - Cover Sites not Currently Covered and Review those covered by 40 CFR 413 and 40 CFR Part Reduce Metals in POTW Sludge - Incorporate Pollution Prevention - Develop Implementable Rule - Fulfill Requirements of the Clean Water Act - Satisfy NRDC Consent Decree

6 General Applicability q Includes process wastewater discharges from existing or new industrial sites engaged in manufacturing, rebuilding, or maintenance of q Includes process wastewater discharges from existing or new industrial sites engaged in manufacturing, rebuilding, or maintenance of metal parts, products or machines for use in the 18 MP&M industrial sectors.

7 MP&M Sectors MP&M Phase I MP&M Phase II Aerospace Aircraft Electronic Equipment Hardware Mobile Industrial Equipment Ordnance Stationary Industrial Equipment Bus and Truck Household Equipment Instruments Motor Vehicles Office Machines Railroad Ships and Boats Precious Metals and Jewelry Printed Wiring Boards Job Shops Miscellaneous Metal Products

8 MP&M Schedule q Proposal Signed by EPA Administrator: October 31, 2000 q Published in FR: January 3, 2001 q Comment Period Extended: July 3, 2001 q Promulgation Signature Date: December 2002 q Compliance Deadline for Indirect Dischargers: 3 years from the publication of the final rule

9 Data Collection Activities Completed Screener Surveys (8000 Phase I, 5000 Phase II) Screener Surveys (8000 Phase I, 5000 Phase II) Detailed Questionnaires - Long Questionnaires (1000 Phase I, 350 Phase II) - Long Questionnaires (1000 Phase I, 350 Phase II) - Short Questionnaires (100 Phase II) - Short Questionnaires (100 Phase II) - Municipality Questionnaires (150 Phase II) - Municipality Questionnaires (150 Phase II) - POTW Questionnaires (150 Phase II) - POTW Questionnaires (150 Phase II) - Federal Surveys Site and Sampling Visits - Site Visits (89 Phase I, 112 Phase II) - Sampling Visits (27 Phase I, 45 Phase II)

10 Site Visits and Sampling

11 Subcategorization Factors considered: q Unit operations q Activity q Raw materials q Products q Size q Wastewater characteristics q Economics q Others (e.g. age, location, energy requirements, POTW burden)

12 Proposed Subcategories q General Metals q Metal Finishing Job Shops q Non-Chromium Anodizing q Printed Wiring Board q Steel Forming and Finishing q Oily Wastes q Railroad Line Maintenance q Shipbuilding Dry Dock

13 Selected Technologies for Metal-Bearing Subcategories q Segregation of streams, Preliminary treatment steps (O/W separation by emulsion breaking), Chemical Precipitation and Sedimentation (+ in-process P2) Option 4 Option 4 (Proposed for New Sources) q Segregation of streams, Preliminary treatment steps (O/W separation by UF), Chemical Precipitation and Microfiltration (+ in-process P2) Option 2 (Proposed for Existing Sources)

14 Pollution Prevention Technology Add-on Option - Added to treatment options 2, 4, 6, 8, 10 - Types of In-process pollution prevention (P2) q Flow rinse reduction for rinses and baths q Recycling of coolants/lubricants q Recycling of paint water curtains

15 MP&M Treatment Technology Options 1&2 (Metals Subcategories) Dilute Rinses Incoming Waste SludgeDewatering Sludge to Contract Haul Chromium Bearing Cyanide Bearing Oily Waters Chromium Reduction Cyanide Destruct. Oil/Water Separation by Emulsion Breaking Chemical Precipitation, Sedimentation/ Clarifier Concentrated Solutions Concentrated Solutions Batch Precipitation Batch Precipitation Effluent Revised 5/8/00 Preliminary Treatment Steps as Necessary In Process P2 Practices (Option 2 only)

16 MP&M Treatment Technology Options 3&4 (Metals Subcategories) Dilute Rinses Incoming Waste SludgeDewatering Sludge to Contract Haul Chromium Bearing Cyanide Bearing Oily Waters Chromium Reduction Cyanide Destruct. O/W Separation by Ultrafiltration Chemical Precipitation and Microfiltration Concentrated Solutions Concentrated Solutions Batch Precipitation Batch Precipitation Effluent Revised 5/8/00 Preliminary Treatment Steps as Necessary In Process P2 Practices (Option 4 only)

17 Printed Wiring Board Subcategory Applies to discharges of process wastewater resulting from the manufacture, maintenance, and repair of printed wiring boards (i.e. printed circuit boards). MP&M will replace 40 CFR 413 and 433 U.S. Population: 620 indirects and 11 directs

18 Printed Wiring Board Subcategory Some unique processes q q Lead-bearing operations (Lead/tin soldering) q q Applying, developing, stripping of photo resist q q More consistent metals mix processed q q Typically target copper in treatment q q Ion Exchange and Sulfide precipitation frequently performed

19 Printed Wiring Board Subcategory q q Existing source limits based on Option 2 q q Proposed limits for: 8 metals Cyanide/Amenable Cyanide Sulfide Organics Control Option TSS and O&G (directs only) q q No flow cutoff exclusion for indirects

20 Printed Wiring Board Subcategory q Limits for tin, nickel, manganese and TOC based on PWB facilities q q Limits for Chromium, Copper, Lead and Zinc based on transfer from General Metals data q q Limits for Cyanide based on General Metals, Metal Finishing Job Shops and Dry Dock facilities q q Limits for Sulfide based on Oily Wastes data q q NEED MORE PWB DATA!!!!

21 Printed Wiring Board Subcategory - Metals Limits Pollutant Max/day Max Mon. Avg. Cr Cu Pb Mn Ni Sn Zn CN (T)

22 Printed Wiring Board Subcategory q Annualized Cost of Rule for PWB Subcategory – $95.1 million (After Tax, 1999$) q q EPA projects 7 PWB facility closures

23 Printed Wiring Board Subcategory q For the PWB subcategory, EPA projects removals of: – – 2.7 million pounds of metals per year – – 36,000 pounds of organic pollutants per year – – 231,000 pounds of cyanide

24 Printed Wiring Board Subcategory q Applicability of MP&M for Electronic Manufacturing Services (EMS) facilities q q Most perform assembly operations - such as soldering surface mount technology to PWB q q EPA plans to cover EMS facilities in the General Metals subcategory

25 General Implementation q Monitoring Waiver for Indirects –Certify to waive monitoring for a pollutant when: 1) not used or generated on-site, and 2) discharge is not above background levels. – Certification based on sampling (BMR and 90- day report) and other technical factors. –Monitoring waivers for directs outlined in NPDES Streamlining (May 15, 2000).

26 General Implementation q Monitoring for Organic Pollutants – Provide flexibility for organic pollutant monitoring by offering 3 choices: 1) Total Organics Parameter (TOP) 2) TOC as an indicator 3) Certify Implementation of a Management Plan for Organic Chemicals

27 General Implementation q q Monitoring for Cyanide – – If not present, use monitoring waiver. – –Amenable cyanide as alternative limit. – –End-of-pipe monitoring for Cyanide(T) when accounting for dilution. – –End-of-pipe monitoring for Cyanide(A) when treatment is performed prior to commingling and when accounting for dilution.

28 What can you do if you disagree with EPA’s proposed limits? q q Paired influent and effluent data from 4-days, minimum. q q Provide the appropriate operational information: list targeted pollutants, pH, temperature, duration, flow diagram, flow rates, sampling point locations, treatment chemical addition rates, describe where controls (ORP) are used, describe production that generated the wastewater being treated. q q Use EPA approved analytical methods. q q Use QA/QC procedures (see Section XXIV of preamble). Provide EPA with Data

29 What can you do if you disagree with EPA’s proposed limits? (continued) q Volunteer to have EPA site visit & possibly sample your wastewater treatment system.

30 Did EPA propose the P2 Alternative in lieu of limits? q NO q EPA is considering it and soliciting comments & data. q EPA Cost Model includes the following P2 practices (directly or indirectly): –rinse flow controls (timed rinses, flow restrictors, conductivity controls), counter-current cascade rinses –centrifugation & recycle of paint water curtains –pasteurization & recycle of coolants/lubricants

31 Did EPA propose the P2 Alternative in lieu of limits? (continued) q EPA needs data on wastewater flow reductions, pollutant load reductions, and cost of implementation related to: –Various Drag-out reduction practices –Various Drag-out recovery technologies –Environmental Management Systems and Recordkeeping Systems –Advanced Training for treatment system operators

32 Other Issues for Comment q EPA has solicited comment on 43 different topics! q Many are subcategory-specific. q You can find these proposed FR notice on pages (66 FR 424; January 3, 2001).

33 q MP&M Web Site: q Hard copies of documents can be ordered from NSCEP: (800) or q for MP&M Comments: More MP&M Information

34 MP&M Contact Information Ms. Shari Barash -- MP&M Project Manager Telephone: Fax: OR Mr. Michael Ebner -- Assistant MP&M Project Manager Telephone: Fax:


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