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The 2012 updates to CFR 40 Part 136 Clean Water Act methods and how they affect you

The 2012 updates to CFR 40 Part 136 Clean Water Act methods and how they affect you. William Lipps Market Specialist –Water Analysis Products. http://water.epa.gov/scitech/methods/cwa/update_index.cfm. Signed into law April 17, 2012. Examples of potentially regulated entities.

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The 2012 updates to CFR 40 Part 136 Clean Water Act methods and how they affect you

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  1. The 2012 updates to CFR 40 Part 136 Clean Water Act methods and how they affect you William Lipps Market Specialist –Water Analysis Products

  2. http://water.epa.gov/scitech/methods/cwa/update_index.cfm Signed into law April 17, 2012

  3. Examples of potentially regulated entities • States, territories, and Indian tribes • Industry • Municipalities

  4. Implementation? Depends on permits Rule effective 30 days after FR publication

  5. Conflicts with Permits Always follow permit! Some specify Part 136 Some specify method

  6. “Or Equivalent” in permit? Any Part 136 method Notify permitting authority

  7. “Or Equivalent” not in permit? Ask permitting authority

  8. What happens if a method is delisted? Use method in your permit until a new permit is issued

  9. 40 CFR Part 136

  10. Changes to Part 136 • New Methods • New Parameters • More than 250 • Mostly pesticides • Updated Methods • Microbiology • Metals • Method Modification (clarification) • Quality Control procedures

  11. Bacteria and Microbiology • Revised and Updated • E. Coli • Enterococci • Fecal • Cryptosporidium • Giardia

  12. Minor Changes and Flexibility • Cryptosporidium (1622) and Giardia (1623) • Different filters and stains • QC clarifications • Temperatures • Bacteria • Minor technical corrections

  13. Oshiro.robin@epa.gov

  14. Method 624 VOCs

  15. Pesticides and PCB’s • Organochlorine • Organophosphate • Herbicides • Triazines • Thiophosphates • Carbamates

  16. Pesticides and PCB’s • New methods means new parameters (lots) • Mostly GC with ECD or FPD/NPD • Some NPD only • Method 525.2 = SPE GC/MS • Method 632 carbamates = HPLC

  17. Pesticides and PCB’s • Flexibility • Different columns • Different detectors • Cannot modify extraction

  18. Gomez-Taylor.Maria@epa.gov

  19. Metals • ASTM D1976 - 2007 - ICP-AES • SM 3125-2009 - ICP/MS

  20. New ICP Methods • Method 200.5 Axial • Method 200.7 allows Axial • Collision cells allowed

  21. for 136.3

  22. New Methods • New Analytes • Updated methods • New ATPs Table 1b

  23. Fewer Columns • Indentations • Headers

  24. Standard Methods? Only one version By year, not edition

  25. New Standard Methods and new Parameter 17a Free Chlorine

  26. Ammonia Nitrogen – Parameter 4 Manual Distillation6

  27. Footnote 6 • Manual distillation not required if: • comparable data on file • 9 different matrices • Matrix spikes • Matrix spike duplicates • With and without distillation • Comparable = RPD < 20% on all

  28. Diffusion

  29. Total Cyanide – Parameter 23 • 2 new ASTM Standards • D 7511 – UV gas diffusion amperometry • D 7284 – Distillation gas diffusion amperometry • 1 Updated ASTM Standard • D 2036 • Gas diffusion amperometry • Ion Chromatography

  30. Available Cyanide – Parameter 24 • 2 updated ASTM Standards • D 6888 – LE gas diffusion amperometry • D 2036 – recommends D 6888 • Updated OIA-1677

  31. Free Cyanide – new Parameter 24a • 2 ASTM Standards • D 7237 – automated gas diffusion amperometry • D 4282 – passive diffusion colorimetry • OIA-1677

  32. Fluoride – Parameter 25 Manual Distillation6

  33. TKN – Parameter 31 • Methods/techniques that need distillation • Titration • Nessler • ISE • Manual phenate* • Automated phenate* * Or salicylate

  34. Diffusion

  35. TKN – Parameter 31 • Methods / Techniques with no manual distillation • Automated distillation • Automated diffusion • Direct colorimetry

  36. Nitrate + Nitrite – Parameter 39 • Reduction Colorimetric • Proprietary • Discrete Analyzer • Not an enzyme

  37. Oil and Grease – Parameter 41 Not Included ASTM D7575

  38. TOC – Parameter 42 • New ASTM Standard – D 7573

  39. DO – Parameter 46 • Updated ASTM Standard – D 888 • Optical Sensors • Allowed for BOD Multiple ATPs for BOD approved in footnotes

  40. Orthophosphate – Parameter 44

  41. Thank goodness for ASTM D7365

  42. Part 136.6 Flexibility

  43. Method Modifications Equivalency 136.6 ATP

  44. Restrictions to part 136.6 • Cannot be Method Defined Analyte • Temperature • Oil & Grease • Total Phenols • TSS, SS, TDS • BOD, COD

  45. Restrictionsto part 136.6 ATP ≠ modifications to existing methods

  46. No ATP letter Chemistry = “essentially” the same Determinative step = “essentially” the same Equivalent Results = meet or exceed

  47. You must document allowed changes with data • Demonstration of Capability • Spikes and duplicates • Method detection limits • Blanks • LCS

  48. Document the reason for the modification, and how it was modified • Overcome an interference • Less hazardous • Green Chemistry • Suitable calibration range • Better precision and accuracy

  49. Examples of allowed modifications • Gas diffusion • Different wavelengths • Interchange of oxidants • Discrete, manual, or continuous flow • Automated or manual sample prep • Collision cells • Buffer reagents and complex reagents

  50. Calibration Model that fits data

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