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Acting Chair Stenlund suggested the engineer that they consider sand bags instead of silt curtains and compost logs instead of silt fences as a more cost effective method; and recommended that rock not be used, but a "net pave" be installed as soon as possible in the operating schedule, or require a mud mat version using bamboo textile, as other options won't work in an urban best management practices (BMP) scenario. Acting Chair Stenlund further strongly suggested that the engineers consider forcing rock under the apron outlet as an exit control, as required under the NDPES permit. Acting Chair Stenlund explained various failures and their cause based on low flow, and suggested that from an engineering standpoint, a plug be installed and removed at the end of the day to address several storm drain inlets and staging plans in an effort to address inlet protection for the track out area, making sure the material doesn't reach the streets, or that the dump trucks don't leak any sludge during transport. Acting Chair Stenlund opined that, whiff was not clear, there should be no need restoration, with this being a good time Chair Stenlund further opined that, fro baffle structure should be retrofitted tc through use of floatable chemicals avail the money that could be realized from nc e the engineer's winter stabilization plan to return to the site in spring for further of year to accomplish the work. Acting m a design level, the St Anthony Falls trap oil so it never reaches the pond, able at a low cost, and available through it installinLa the silt curtain. Acting Chair Stenlund expressed his anticipation in the project proceeding, and seeing the new technology of the iron filings at work; and thanked homeowner representatives for their attendance for tonight's presentation. Acting Chair Stenlund questioned if there was any opportunity for tree planting by community groups; with Public Works Director Schwartz expressing interest in coordinating that work with Mr. Stenlund. Acting Chair Stenlund opined that there would probably be more space needed and more trees removed than anticipated facilitating getting the trucks in; and he saw a great opportunity for one or more Eagle Scout projects. Discussion among Members and Mr. Shoemaker and Mr. Fossum included project construction anticipated in December of 2010 or January of 2011; lake volume and water quality comparisons; the success of past alum projects to improve water quality; internal sediment loadings versus those from outside sources; alum treatments in comparison to the iron filings, with alum being a component of iron; expense of alum removal; and common phosphorus loading in urban environments due to sediments from lawn fertilizer and organic material (leaves); and challenges for most urban lakes in maintaining or improving water quality and the need to develop and publicize BMP's and make people aware of the contributing factors in the water quality of community lakes. Page 4 of 11