2011-08-18_Minutes - Laserfiche WebLink

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202 203 Member Westerberg advised that he would need to read through the entire study again. 204 205 Member Miller, familiar with this and other studies as well, advised that the study was not longitudinal; 206 but noted that it did provide a mechanism to establish where nutrients can be increased through motorboat 207 activity; with the study stating that nutrients will be re- suspended. Member Miller clarified that the study 208 didn't have anything to do with long -term motorboat use, but indicated that it was one factor to consider. 209 Member Miller opined that, as the GLWMO was developing its Third Generation Plan, it served as one 210 factor in a variety of variables that can increase nutrients in a lake. 211 212 Member Westerberg, based on his expertise and career with the Saint Paul Regional Water Utility for 213 thirty-four (34) years, and his observation and water quality testing of Pleasant Lake, Lake Vadnais, and 214 Sucker Lake, and having employed a control known as lake bottom aeration and released phosphorus, he 215 and other staff found reduced phosphorus loadings by 50% through restricting internal phosphorous 216 loading/nutrient recycling. Member Westerberg opined that this paralleled theYousef study; and served 217 to educate the public to realize that while it was their perception that most phosphorus was imported into 218 a lake, most was from internal sediments. Member Westerberg strongly opined that it was a charge of the 219 GLWMO to provide that education and continue to address water quality degradation as indicated. 220 221 Chair Eckman asked Ms. Roberts if she thought there were more septic systems around Lake Owasso in 222 the 1950's and 1960's rather than connections to a City sewer line, and whether that may have negatively 223 influenced water quality at that time. 224 225 Ms. Roberts opined that, while most homes had their own septic system, growth in the community and 226 more year -round homes rather than cottages used less frequently in the past, was also a contributor that 227 would not indicate septic systems were as big of an issue as Chair Eckman suggested. 228 229 Member Miller noted that the previous Barr UAA also pointed out similar findings (page 48 of the 230 Executive Summary) and suggestions to examine motor boats and wind; with models showing 231 significantly higher internal loadings versus external loadings for every situation, whether a dry, wet or 232 average rainfall year. 233 234 Edward Roberts, Lake Owasso Resident 235 Mr. Roberts questioned the form proposed allowing the public to digest GLWMO Board responses to 236 their written comments; and how any further clarification or understanding needed would be addressed: 237 whether in a public meeting or through another venue should the public be unable to attend those 238 meetings as indicated in the proposed timeline for Plan adoption to be acted upon at tonight's meeting. 239 240 Mr. Petersen responded that GLWMO Board responses to written comments will be posted on the 241 GLWMO website once those responses are approved by the Board, with posting of the comments and 242 responses anticipated sometime in late September. 243 244 Mr. Roberts questioned if this was anticipated prior to the Public Hearing. 245 246 Mr. Petersen, Chair Eckman and Member Miller all responded affirmatively. 247 248 Mr. Roberts reiterated his question on how the public could receive additional clarification if, upon their 249 review of the formal GLWMO response on the website, they still needed more information or further 250 clarification. 251 252 Mr. Petersen reiterated that additional clarification could be received at the Public Hearing. 5