Laserfiche WebLink
BMP and Infeasibility description <br />applicable lists Infeasibility criteria and rationale for each <br />BEAR not selected <br />15.14n <br />Note: Criteria with setback distances are as measured from the bottom <br />NO ROOFS <br />Bioretennon <br />edge of the bioretention soil mix. <br />or Rain Gardens <br />Citation of any of the following infeasibility criteria must be based on <br />an evaluation of site -specific conditions and a written <br />recomendation from an appropriate licensed professional <br />(e.g.mengineer, geologist, hydrogeologist): <br />❑ Where professional geotechnical evaluation recommends <br />infiltrabun not be used due to reasonable concerns about erosion, <br />slope failure, or down gradient flooding. <br />❑ Within an area whose ground water drains Into an erosion hazard, <br />or landslide hazard area. <br />❑ Where the only area available for siting would threaten the safety <br />or reliability of preexisting undergmund utilities, preexisting <br />underground storage tanks, preexisting structures, or preexisting <br />road or parking lot surfaces. <br />❑ Where the only area available for siting does not allow for a safe <br />overflow pathway to stormwater drainage system or private storm <br />sewer system. <br />❑ Where there is a lack of usable space for bioretention areas at <br />redevelopment sites, or where there is insufficient space within the <br />existing public rightof-way on public road projects. <br />❑ Where infiltrating water would threaten existing below grade <br />basements. <br />❑ Where infiltrating water would threaten shoreline structures such <br />as bulkheads. <br />The following criteria can he cited as reasons for infeasibility without <br />further justification (though some require professional services to <br />make the observation): <br />❑ Evaluation of infiltration is not equired per the Initiation <br />Infeasibility Map due to steep slopes, erosion hazards, or landslide <br />hazards. See City'a Infiltration Infeasibilty map. <br />❑ Within setback provided for BMP T7.30(OGGS Section dd.l(3)) <br />❑ Where they are not compatible with surrounding drainage system <br />as determined by the any (e g., project drains to an existing <br />stormwater collection system whose elevation or location <br />precludes connection to a properly functioning bioretention area). <br />City of Everett Public Works <br />Small Project Stormwater Site Plan Report Dec 2019 <br />