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    The character of stormwater management has, and continues to change.  Originally stormwater systems were built just for conveyance, with a mindset of get-it-out quick.  Now stormwater management is a component of a comprehensive integrated urban water resource.  The new mantra is slow it down, spread it out, and soak it in.  Contemporary stormwater management includes quantity and quality considerations, multiple-use facilities, riparian corridors, recreation, wetland preservation and groundwater recharge. The new approaches require a complete paradigm shift on how managing runoff from rain and snow is thought about.

    The new paradigm has introduced a whole new array of issues that has resulted in basic changes in stormwater planning, design, operation and maintenance, construction, and financing.  Stormwater managers now must find the resources to effectively satisfy the changes as well as the regulatory requirements.

    To assist in the process, the City's Transformation Fund invested in work to update the 1994 Technical Reference Manual and Stormwater Master Plan.  Additionally, an Asset Management and Capital Improvement Plan was created.  The final drafts of these documents can be accessed in the links below;

    During this process, it was determined that the City should be working towards a Level of Service C for asset management.  Based on standardized best practices that have been established by other municipalities, and were designed to meet regulatory requirements, goals for renewal, and operations and maintenance, a Level of Service C assumes doubling the effective life of infrastructure through rehabilitation methods before complete system replacement (150-years for sewers and manholes); a 10-year cycle for system assessment on infrastructure over 75-years old; corrective maintenance on 15 percent of assets currently beyond their effective life; preventative maintenance on 10 percent of inspected assets; and 10 percent of the capital investment is attributed to green infrastructure practices.