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2011-09-22_Minutes
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2011-09-22_Minutes
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Commission/Committee
Commission/Authority Name
Grass Lake WMO
Commission/Committee - Document Type
Minutes
Commission/Committee - Meeting Date
9/22/2011
Commission/Committee - Meeting Type
Regular
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thing she found most useful was the visual with areas shown that contribute the most phosphorus within <br />sub - watersheds draining to Lake Owasso. Chair Eckman further opined that it would be useful to the <br />GLWMO to have more specifics for short-term solutions to Lake Owasso water quality issues. Chair <br />Eckman suggested that GLWMO may want to utilize a stormwater system retro -fit analysis process to <br />identify actionable opportunities for stormwater improvement to Lake Owasso during the WRPP for Lake <br />Owasso. <br />Mr. Petersen advised the Board that, while this would require Board action to re- appropriate funding from <br />that designated for the storm sewer analysis currently in process, remaining funds were available in the <br />fund balance for 2012. At the request of Chair Eckman, Mr. Petersen advised that, while funds would not <br />be available in 2011, consideration for this type of activity could begin as soon as 2012, whether a <br />neighborhood analysis was done or not. <br />Mr. Petersen noted that traditionally, such an analysis looked at surface infiltration techniques; however, <br />in noting that there were many levels of analysis that could be applied, he opined that urban landscapes <br />needed to consider subterranean opportunities and options as well, which would increase the level of <br />analysis available. However, Mr. Petersen noted that this increased level, while based on the same <br />principles, would increase costs according to the need for civil engineering analyses. Mr. Petersen <br />suggested that this consideration be addressed if and when the GLWMO Board looked at alternative <br />approaches. Mr. Petersen noted that FOR had worked with the Capitol Region Watershed District on <br />such a program, a residential street revitalization program in the Como Lake Watershed, using those same <br />principles to determine where storm water could be infiltrated in conjunction with reconstruction projects. <br />Chair Eckman noted that, a retro -fit analysis may include a neighborhood tour to determine not only the <br />most advantageous locations for curb -cut rainwater gardens, but also which of those property owners <br />appeared to take an interest in active landscape maintenance. Chair Eckman noted that a lot had been <br />learned on how to have lower maintenance for such projects and make them more attractive to property <br />owners and their neighbors <br />Ms. Correll clarified for Board members that such an analysis was already included in the WRPP /TMDL <br />study with the MPCA; MS. Correll advised that this was why only the two (2) grant proposals had been <br />submitted, rather than those previously identified and approved by the Board for application, to avoid <br />duplication of studies. Ms. Correll noted that FOR had reviewed the UAA summary with BWSR and its <br />specific recommendations; and recognized that it needed to be carried one step further before putting any <br />practices into the ground at substantial cost; allowing for another 1 -2 years to analyze the hot spots and <br />taking into consideration different precipitation years and weather conditions. Ms. Correll assured Board <br />members that the MPCA study would review neighborhoods and landscapes for recommended BMP's. <br />Wabasso Lake Outlet Back -flow <br />Chair Eckman sought GLWMO Board input on what the WMO could do to address the Lake Wabasso <br />outlet issues concerning backflow during extremely high water level conditions when GLWMO funding <br />and authority are limited. <br />Chair Eckman advised that she and Mr. Petersen had spent part of a day tracking the normal water flow to <br />Grass Lake and under high water conditions, its outlet to the West Vadnais Lake and beyond. From West <br />Vadnais Lake the water flows into the Ramsey - Washington Metro Watershed District Ditch 16 sub - <br />watershed that flows to Lake Phalen., Since the water was so high during their field visit, water was <br />flowing into the Ramsey/Washington Metro Watershed District. <br />Mr. Petersen noted, due to the high water, that the VLWMO and the GLWMO are currently hydrological <br />connected to the greater Phalen Lake drainage area, and had been for quite some time with improvements <br />done to the system several years back. Mr. Petersen proceeded to provide the results of this study in more <br />10 <br />
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