Status of Revising the CBP Guidelines for Sampling and

Analysis

Mary Ellen Ley, USGS/Chesapeake Bay ProgramMarch 21, 2012

Why Revise CBP Guidance for Analytical Methods and QA?

Expanding Monitoring into Nontidal Waters

Need Documented Program RequirementsConsistent development of Participant SOPsComparable data among ParticipantsBasis of On-site Assessments

The Current Publication is OutdatedBased on tidal estuarine methodsPublished in mid 1990’s!

Work Since 1996 PublicationChlorophyll method – revised, 1999Light Attenuation method – new, 2003CDOM method – new, 2005

Chapter IV, Tidal Field Procedures – revised, 3/2008Chapter V, Nontidal Field Procedure – revised,

11/2008

Chapter I, Introduction – revised, 12/2010Chapter II, Quality Assurance – draft rev. 1, 3/2012Chapter VI, Analytical Methods – draft rev. 1, 3/2012

Chapter II NotesChanges to “Quality Management” Section:

Moved QAPP & Lab Manual Guidance to Appendix A

Added language from CBPO grant guidance

Procedural Modifications

Comparability Studies

DQOs for Field & Lab QC in Tables II.1 & II.3

Moved Lab-related QC Items to Chapter II,

Lab QA

Chapter VI NotesNovember and February meetings in Colonial

Beach

Section B. Definitions & Terms – newSection C. Laboratory QA/QC – expanded

Preservation Table VI.1 – added nontidalSample Receiving/Storage, Support Equipment

and Control Charts – from Ch. 2Calibration Requirements – refined, clarified

Outstanding Issues – Refer to Draft

Still Needed for Final PublicationChapter III. Data Management

Parameter Relationship Chart – species of N, P, C, SS

A New Title?

Other Suggestions?