Decision on Use of ASTM Method D7575

The EPA published a decision in 2013 on the use of an alternative laboratory analytical method for oil and grease. (Refer to CWA Methods Regulatory History.)

• NPDES Chemistry Limited Use Alternate Test Procedure Application (fillable form) (docx) (34.48 KB, March 2013)
• NPDES Chemistry Limited Use Alternate Test Procedure Method Documentation Form (fillable form) (docx) (58.98 KB, March 2013)
• Performance Comparison Form (Clean Matrix, Laboratory Pure Water) (fillable form) (docx) (54.22 KB, March 2013)
• Performance Comparison Form - Effluent Matrix (fillable form) (docx) (49.6 KB, March 2013)
• Oil and Grease ATP Comparison Worksheet (spreadsheet) (xlsx) (34.84 KB, February 2013)

• Clean Water Act Analytical Methods Update Rule - Decision on Alternative Oil and Grease Method; Fact Sheet (pdf) (41.68 KB, March 2013)
  Decision on use of ASTM Method D7575
• Guidance for Limited Use Alternate Test Procedure Applications for ASTM Method D7575 for Oil and Grease (pdf) (123.92 KB, March 2013, 821-R-13-006)
  Instructions for demonstrating comparability between EPA-approved methods for measurement of oil and grease in wastewater and ASTM D7575, an alternate method