Envirionmental Laboratory Accreditation Program Technical Information

US EPA METHODS UPDATE RULE (MUR)

The US EPA issued Guidelines for Establishing Test Procedures for the Analysis of Pollutants under the Clean Water Act; National Primary Drinking Water Regulations; Analysis and Sampling Procedures; Final Rule (3-12-2007). This Rule becomes effective April 11, 2007 and will impact the certification and may require changes to your laboratory procedures as of that date.  Please refer to the links below for more information.

• The ELAP Notice Sent to the Laboratories (PDF)
• The Federal Register Notice (3-12-2007)
• Print Version of the Federal Register Notice (PDF, 2.3MB)
• Changes to Water Regulations MUR (PowerPoint)
• Deleted, Equivalent, and new Methods Table (PDF)
• New Test Methods Table (PDF)
• Holding Time and Preservation Changes Table (PDF)
• Solutions to Analytical Chemistry Problems with Clean Water Act Methods (PDF)
• The ATP Acceptable Version Letter for the 21st Edition of Standard Methods (PDF)
• Frequently Asked Questions

Other Technical Information

• Method Detection Limits and Reporting Limit Requirements (PDF)
• The guidance for certified laboratories performing total PCB Analysis under SDWA (PDF)