Innisfil Official Plan OMB Approved - Town of Innisfil
Innisfil Official Plan OMB Approved - Town of Innisfil
Innisfil Official Plan OMB Approved - Town of Innisfil
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<strong>Town</strong> <strong>of</strong> <strong>Innisfil</strong> <strong>Official</strong> <strong>Plan</strong>INFRASTRUCTUREv) minimize pollutant loadings to the watercourses, including phosphorus, inaccordance with the water quality targets that are established from time to time;vi) net gain <strong>of</strong> fish habitat;vii) minimize changes to base flow quality and quantity in receiving watercourses;viii) minimize and consolidate the number <strong>of</strong> stormwater treatment facilities;ix) where possible enhance natural vegetation along stream corridors; andx) incorporate enhanced stormwater management design.7.2.5 In new or expanded settlement areas, a Master Drainage <strong>Plan</strong> shall be undertaken aspart <strong>of</strong> the Secondary <strong>Plan</strong> preparation. The Master Drainage <strong>Plan</strong> shall:i) Review and refine the extent <strong>of</strong> the existing Floodplain mapping and in theabsence <strong>of</strong> existing floodplain mapping, determine the extent <strong>of</strong> flooding under aregional storm event for all watercourses with an upstream drainage area greaterthan 125 hectares;ii) Establish preliminary storm water requirements in terms <strong>of</strong> quality and quantitytargets including ensuring no increase in flows from predevelopment levels;iii) Establish requirements for erosion control and sediment control plans duringconstruction and post construction;iv) Undertake a flooding and erosion study to identify and mitigate downstreamflooding and erosion impacts resulting from the proposed development;v) Formulate a stormwater management plan to manage urbanization impacts onsurface water and groundwater;vi) Provide details on size and location <strong>of</strong> stormwater management facilities;vii) Establish a monitoring program for long-term assessment <strong>of</strong> drainage impacts <strong>of</strong>development;viii) Manage the quality <strong>of</strong> stormwater run-<strong>of</strong>f as part <strong>of</strong> the regular stormwatermanagement program in accordance with the Ministry <strong>of</strong> Environment 2003"Stormwater Management <strong>Plan</strong>ning and Design Manual";ix) have consideration <strong>of</strong> Best Management Practice criteria as set out in Section7.2.4; andx) demonstrate how any water quality objectives and targets that are establishedfrom time to time are met.7.2.6 In areas with a Master Drainage <strong>Plan</strong>, proponents <strong>of</strong> development must show howdevelopment is consistent with the Master Drainage <strong>Plan</strong>. Functional ServicingStudies submitted as a condition <strong>of</strong> draft plan <strong>of</strong> subdivision approval shalldemonstrate this consistency and provide detail on stormwater management pondsizes, and design.7.2.7 In areas where there is no Master Drainage <strong>Plan</strong>, an application for more than 5 newlots or for industrial, commercial and institutional development where impervious areas<strong>of</strong> over 1000 sq. m. and or chemical storage are proposed shall be required to submita storm water management plan that includes:110Adopted July 26, 2006 <strong>Approved</strong> by <strong>OMB</strong> May 2009, March 2010 & April 8, 2011