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INGERSON PROJECT REVIEW GROUP RECOMMENDATIONS Curbs and Gutters . Review Group Recommendations: All Review Group members recommend tbat the Ingerson Project not include tbe installation of 6", or more, concrete curbs and gutters. The majority ofneigbborbood residents tbat responded to tbe Dec. 1999 neigbborbood survey indicatcd tbat they are opposed to tbe installation of any curb and gutter system. From a water quality standpoint, installation of curbs and gutters may be detrimental. To maintain tbe integrity oftbe roadway witbout increasing tbe road widtb flat concrete edge bands could be installed. Surmountable curbs could or sbould be installed in areas tbat require control of water drainage. Although there are some benefits to curbs and gutters, there are also disadvantages to such structures: The lack of a curb eliminates a major trap of airborne pollutants. In addition, runoff can infiltrate into the soil during small and moderate storm events. Performance monitoring, however, has shown that drainage channels only realize these benefits under ideal conditions... .[D]ust, pollen, leaves, grass clippings, and organic matter can be trapped by the curb, where they remain lmtil they are washed into the stonndrain system. 54 . Both the City of Golden Valle/5 and Maplewood56 acknowledge that some individuals do not want curbs or gutters in the neighborhood and, if the majority of the residents do not want curbs and gutters, the City does not propose or install curb and gutters in the roadway projects. For water quality purposes, the Rice Creek Watershed District would prefer that curbs and gutters not be installed.57 According to information presented to and discussed by the Review Group, it is not necessary to install curbs and gutters in areas that are utilizing rain gardens.58 Arguments for the installation of curbs and gutters have included adding stability to the street and/or facilitating snowplowing. Greg Brown has advised that, if necessary, the roadway can be stabilized by the installation ofan approximately 16"-18" concrete edge band along the side of the roadway. The roads within the Ingerson Project have been snowplowed by both County and City personnel for over 40 years without any detrimental effect. Ken Haider, Maplewood, 54 Site PlanniniZ for Urban Stream Protection, The Center for Watershed Protection and US EPA (December, 1995). 55 City of Golden Valley web site. 56 May 2, 2000 Review Group Meeting. 57 April 4, 2000 Review Group Meeting. . " See also Residential Streets, supra. 22 August 17, 2000