Practical Quantitation Limit (PQL) Workgroup
Meeting Summary

October 20, 2004

The PQL subcommittee met on OCtober 20, 2004, 9:30-11:30 a.m. at the Colorado Department of Public Health and Environment Lab Services Building, 8100 Lowry Blvd, Denver, Colorado. This memorandum briefly summarizes the major topics discussed at this meeting.

Meeting Agenda
- Introductions
- Overview of agenda
- Define and prioritize objectives of subcommittee
- Identify tasks and action items
- Next steps

The meeting was attended by: Laurie Peterson-Wright (CDPHE), Greg Naugle (CDPHE), Larry Penfold (Severn Trent), Frank Johns (Tetra Tech), Gary Beers (CDPHE), Ed Mead (City of Boulder), Lyn Fitzgerald (Parsons), Corinne Bogert (Lockheed Martin), and Michael Lewis (USGS).

Define and Prioritize Objectives
1. Review and finalize interim PQL guidance document. Provide redline of draft document to Dave Akers and PQL Workgroup. Interim guidance document was drafted by Gary Beers.
2. For existing table of organic standards and PQL’s (proposed and existing), fill in gaps for missing PQL’s. Table is currently contained in draft interim PQL Guidance Document (original table was removed from Regulation No. 61).
3. Establish standard QC procedures for any new PQL development.
4. Using interim PQL guidance document and existing CDPHE policy as a starting point, develop site specific PQL guidance.

Identify Tasks and Action Items Prior to Next Meeting
1. Review other state PQL policies. (Gary and Corinne)
2. Review and provide comments on draft interim PQL Guidance Document. (All)
3. Beginning with a few of the organics lacking PQL’s and utilizing the existing literature, fill in gaps in PQL table. Laurie will evaluate this process for a few compounds and depending on her degree of success and the repeatability of the process, those remaining compounds that are missing PQL’s may be divided up between other subcommittee members for completion.

Next Steps
1. Report out on subcommittee activities to Dave Akers and the PQL Workgroup at next workgroup meeting on 10/26/04. (Michael)
2. Next meeting planned for Wednesday December 1, 2004 at CDPHE Lab Services Bldg.