Summary of nutrient criteria stakeholders’ meeting

11/22/05

Participants:

Greg Anderson, MDNR;
Bob Bacon, Environmental Resources Coalition;
Dorris Bender, City of Independence;
Georgeanne Bowman, MDNR;
Robert Brundage, Newman, Comley, & Ruth;
Cindy DiStefano, MDC;
Jack Dutra, JD Information Services;
Bob Hentges, Missouri Public Utility Alliance;
Jerry Lawson, Marshall Municipal Utilities;
Bonnie Liscek, EPA;
Candi Lordo, Lakes of Missouri Volunteer Program;
John Lory, University of Missouri;
Beth Martin, Washington University Environmental Clinic;
Dan Obrecht, University of Missouri;
Mark Osborn, MDNR;
Tim Rielly, MDC;
Buffy Santel, St. Louis MSD;
Trent Stober, MEC Water Resources;
Tony Thorpe, University of Missouri;
Gary Welker, EPA;
Betty Wyse, Environmental Resources Coalition;

Dan gave a presentation on a proposed approach to nutrient criteria development in lakes and reservoirs, based on several factors, including watershed size, depth of waterbody, and residence time. A copy of the presentation will be delivered separately.

Mark gave a general summary of the lake nutrient data, including ranges of cause and response variables in the regions of the states, as well as the relationships between cause and response variables. A copy of the presentation will be delivered separately.

Discussion after the presentations consisted of a number of questions for which the answers weren’t immediately available.

• Drinking water lakes in Northern Missouri – What is the mean depth of those lakes? Are they impaired? Are impairments caused by Nitrogen and Phosphorus? Don Scott (PDW) might be a good speaker for that subject.

• Best Management Practices – how do we grade the effectiveness of BMP’s?

• What is Impaired? How do we determine impairment? How closely tied is the cause (N & P) with the response (Chl a, and Secchi)? What other factors play a roll (turbidity, stratification, algal species)