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263 plantings. Mr. Johnson provided various examples of formal and public urban <br />264 rain gardens, some that didn't look like rain gardens yet still functioned as one. <br />265 Mr. Johnson noted that there were various levels of maintenance, depending on <br />266 the type of plants used and soil amendments, as well as size and other factors. <br />267 Some of those online resources included: <br />268 ■ Wisconsin Department of Natural Resources website <br />269 ■ Blue Thumb.org <br />270 ■ And the more technical MN Stormwater Manual (November <br />271 2005 edition) <br />272 AL <br />273 Mr. Johnson reviewed other storm drainage options installed or in the process of <br />274 being installed in Roseville, one at the Manson/Stanbridge area where new piping <br />275 was being installed to decrease waters in the overall area and protect adjacent <br />276 properties. <br />277 <br />278 Discussion included permits for homeowners for installing a rain garden; <br />279 impervious surface requirements for properties and if in excess of 30%, requiring <br />280 mitigation; maintenance agreements for BMP's between the 0 and homeowner <br />281 as applicable; and trigge*or mercial perties when redeveloping based on <br />282 City Code and area Wattrict requirements and oversight. <br />283284 Mr. Johnson reviewed monies available for BMP's and technical <br />285 support through the Ramsey Conservation District in designing and installing rain <br />286 gardens; and regulations based on which of the three watershed districts in which <br />287 a property was located, and available cost -participation monies different among <br />288 each watershed district. Mr. Johnson noted that there was an application process <br />289 for each BMP, followed by approval whether by their staff or Board, at which <br />290 time the homeowner could install the BMP or hire a contractor to do so. Mr. <br />291 Johnson advised that, typically the cost -share program was based on 50% of the <br />292 total project amount up to a maximum amount. Mr. Johnson advised that various <br />293 examples of installed BMP's are already in place in Roseville, with the BMP map <br />294 done in draft form, and soon available to the public once the data was completely <br />295 compiled. Mr. Johnson encouraged residents to contact him at City Hall for some <br />296 addresses of BMP's, noting that Twin Lakes Parkway provided a great example <br />297 for storm water treatment through multiple cells. <br />298 <br />299 Mr. Johnsonthat plantings and the treatment areas could be formal, native, <br />300 sod, or trees an rubs, including mowed versus non -mowed areas. Mr. Johnson <br />301 further noted that watershed districts were looking to educate the public and <br />302 encouraging property owner support in controlling stormwater for the benefit of <br />303 all. Once a property owner contacted their watershed district or Ramsey <br />304 Conservation District, Mr. Johnson advised that they would set up the next steps <br />305 to follow, goals and options available; with a five-year maintenance agreement <br />306 required once installed. No matter the size or how much benefit was available, <br />307 Mr. Johnson advised that any improvements were encouraged, especially with the <br />308 clay dominated soils in Roseville. <br />Page 7 of 15 <br />