Minnesota Pollution Control Agency Welcome! Medicine Lake Excess Nutrients TMDL Project Steering Committee Meeting #5 May 14, 2009 Photo by: Terrie Christian—President, AMLAC

Minnesota Pollution Control Agency Agenda 4:00 – 4:05 Welcome and Introductions 4:05 – 4:25 Final Loading Capacity and Reductions update – Hans Holmberg, LimnoTech and Brian Vlach, TRPD 4:25 – 4:45 Finalize method for splitting up the WLA – Chris Zadak, MPCA and Brian Ross, CR Planning 4:45 – 5:25 Review/refine BMP decision criteria - Brian Ross, CR Planning 5:25 – 5:55 Potential Improvement options – Hans Holmberg, LimnoTech and Chris Zadak, MPCA Existing BMPs in watershed (Hans) BMPs in previous implementation plans (Hans) Additional improvement options to consider (Chris) 5:55 – 6:00June meeting agenda – determine BMP options 6:00Adjourn

Minnesota Pollution Control Agency Previous Decisions General agreement on the grouping of the allocation decision criteria, with some caveats Committee has a comfort level with the data and modeling, Comfort level does not preclude need for additional information and reservations about the interpretation of data Committee seeks a hybrid model for making allocations.

Minnesota Pollution Control Agency Final Loading Capacity, Reductions Update

Minnesota Pollution Control Agency Finalize method for splitting waste load allocation 1.Individual allocations for each MS4 2.Categorical allocation, all MS4s together, administered by the Basset Creek Watershed Management Commission 3.Hybrid allocation, with road MS4s (MnDOT, Hennepin County) getting individual allocations, MS4 cities being categorical Default allocation method is #1 (individual allocations) Categorical allocation is dependent on involvement of BCWMC

Minnesota Pollution Control Agency Draft Criteria for Decision- Making Best Management Practices should be prioritized by: Cost effectiveness Diversity of benefit Opportunities for shared implementation Greatest capacity for measurable results

Minnesota Pollution Control Agency 1. Cost effectiveness Cost effectiveness includes: initial cost, operating or ongoing costs, and minimal external costs, weighed against the BMP performance as measured by phosphorus load reduction. Are there other elements of cost effectiveness that need to be considered?

Minnesota Pollution Control Agency 2. Diversity of benefit Other than cost benefits, benefits identified include: habitat preservation and enhancement, environmental benefits, water volume control, and sediment removal. Are there other benefits that should be considered?

Minnesota Pollution Control Agency 3. Emphasize shared implementation Must shared implementation be watershed wide, or are there other kinds of shared implementation? What is a good example of shared implementation?

Minnesota Pollution Control Agency 4. Greatest capacity for measurable results The idea emphasized ‘measurable’, which distinguishes BMPs for which removal efficiency rates can be monitored from the BMP versus those where monitoring is not possible. Should the ability to measure removal of phosphorus be given a high priority?