2014-08-26_PWETC_AgendaPacket - Laserfiche WebLink

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217 218 Mr. Schwartz reported that the City Council, at that same meeting, had adopted a 219 resolution supporting the City of Roseville's participation in the GreenStep Cities 220 program, with the City's Environmental Specialist Ryan Johnson appointed as the 221 City contact who would be communicating with the PCA to get the GreenStep 222 website information up-to-date and additional data entry requirements met. Mr. 223 Schwartz noted that the City of Roseville was now a GreenStep 1 City, and once 224 that additional data input was completed, they should reach Step 2. Mr. Schwartz 225 advised that staff would walk through the process and inventory with the PWETC 226 as appropriate in the future. At the request of Chairenlund, Mr. Schwartz noted 227 that the State PCA and Metro/CERTs ran the reenStep program, with 228 involvement by the League of Minnesota Cities in encouraging Minnesota cities 229 to reduce their carbon foot print. 230 231 At the request of Chair Stenlund, Mr. Schwartz advised that the bituminous 232 delamination issue had not yet been resolved, with control section analysis 233 currently underway and metro -wide conversations continuing. Mr. Schwartz 234 advised that future consideration to upgrade the s overlay pr am would be 235 taken. 236 237 5. Raingardens and Other ormwater BMP' 238 Environmental Specialist Ryan Johnson provided a presentation at the request of 239 the PWETC on the use and design of rain gardens and other storm water best 240 management practices (BMP's) in Roseville. 241 242 Mr. Johnson's presentation of "Rain Gardens 101 attached hereto and made a 243 part hereof, reviewed the what's where, sand types of rain gardens, and what was 244 or was not a rain garden, who's purpose was for infiltration of stormwater into 245 amended soils and plantings. Mr. Johns reviewed locations and their treatment 246 values in capturing sediment, organics, and atmospheric -borne metals; and 247 provided various examples and their levels of effectiveness. Mr. Johnson noted 248 that problems continued with fertilizer runoff and grass clippings ending up in 249 storm drains and eventually into water bodies unless some system of pipe 250 drainage or infiltration system was put in place, allowing reduced pollutants 251 keeping phosphorus out of those water bodies. 252 253 Mr. Johnson went through the planning and installation process involved for a 254 property owner to incorporate a rain garden or other BMP in Roseville, including 255 preparation of the rain garden site and soils and provided various samples in the 256 area of existing BMP's. Mr. Johnson reviewed sizes and depths for rain gardens, 257 various infiltration systems based on soil types and water needed to be captured, 258 and varieties of plantings and pricing. 259 260 Mr. Johnson noted that this design process and information was all available for 261 property owners through various resources available on line or by contacting him 262 at City Hall, to get them directed toward design resources and recommended Page 6 of 15