Mary Ellen Ley, USGS/Chesapeake Bay Program March 21, 2012

Why Revise CBP Guidance for Analytical Methods and QA? Expanding Monitoring into Nontidal Waters Need Documented Program Requirements Consistent development of Participant SOPs Comparable data among Participants Basis of On-site Assessments The Current Publication is Outdated Based on tidal estuarine methods Published in mid 1990’s!

Work Since 1996 Publication Chlorophyll method – revised, 1999 Light Attenuation method – new, 2003 CDOM method – new, 2005 Chapter IV, Tidal Field Procedures – revised, 3/2008 Chapter V, Nontidal Field Procedure – revised, 11/2008 Chapter I, Introduction – revised, 12/2010 Chapter II, Quality Assurance – draft rev. 1, 3/2012 Chapter VI, Analytical Methods – draft rev. 1, 3/2012

Chapter II Notes Changes 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 Notes November and February meetings in Colonial Beach Section B. Definitions & Terms – new Section C. Laboratory QA/QC – expanded Preservation Table VI.1 – added nontidal Sample Receiving/Storage, Support Equipment and Control Charts – from Ch. 2 Calibration Requirements – refined, clarified Outstanding Issues – Refer to Draft

Still Needed for Final Publication Chapter III. Data Management Parameter Relationship Chart – species of N, P, C, SS A New Title? Other Suggestions?