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2) Water Quality Treatment <br /> a) InfiltrationNolume Control Requirement <br /> 1) For all new or reconstructed impervious portions of a project, a runoff volume based on the <br /> requirements of the governing Capitol Region (CRWD), Ramsey-Washington Metro <br /> (RWMWD), or Rice Creek Watershed District (RCWD) rules. Within all other Watershed <br /> jurisdictions, a runoff volume of 1.1 inches must be treated through infiltration practices. <br /> 2) For all redevelopment impervious portions of a project, a runoff volume based on the <br /> requirements of the governing Capitol Region (CRWD), Ramsey-Washington Metro <br /> (RWMWD), or Rice Creek Watershed District (RCWD) rules. Within all other Watershed <br /> jurisdictions, a runoff volume of 1.1 inches must be treated through infiltration practices. <br /> 3) Filtration practices that are designed for partial recharge (e.g., bioretention basin with under <br /> drains) shall receive sixty-five percent (65%) credit for infiltration/volume control. <br /> Incorporation of trees and shrubs into filtration practices is encouraged. <br /> 4) No more than 15% of the new or reconstructed impervious surface may be left untreated. <br /> b) Pollutant Removal Requirements. For projects that have met the infiltration/volume control <br /> requirements above, the pollutant removal requirements are considered to be met. For projects where <br /> infiltration or filtration is not feasible or is prohibited (see Item 5.a.), the following pollutant removal <br /> standards (based on a standard Nationwide Urban Runoff Program, NURP, particle size distribution) <br /> apply prior to reaching a downstream receiving water: <br /> 1) For new development and redevelopment portions of a site, provide treatment to remove ninety <br /> percent (90%) total suspended solids (TSS) and sixty percent (60%) total phosphorus (TP) <br /> modeled for an annual average rainfall. <br /> c) For areas that are unable to meet the stormwater standards, the applicant shall pay into the City's <br /> Stormwater Impact Fund to cover the cost of implementing equivalent volume reduction elsewhere in <br /> the City. The required amount to contribute to the Stormwater Impact Fund will be set annually. <br /> Money contributed to the Fund will allocated to volume reduction projects to help offset the volume that <br /> was not achieved on the permitted development. <br /> (a) To be eligible to pay into the Stormwater Impact Fund, applicants must prove that <br /> stormwater bmp's are not feasible on the site and must complete the Alternative Stormwater <br /> Compliance Sequencing: <br /> (i) Alternative Stormwater Compliance Sequencing <br /> The alternative compliance sequencing process includes three steps that must be followed <br /> in order to meet the volume reduction standard. The sequencing steps to be followed are: <br /> a. First, the applicant shall comply or partially comply with the volume reduction <br /> standard to the fullest extent practicable on-site through alternative volume <br /> reduction methods. See the questions below for more information. <br /> b. Second, the applicant shall meet the volume reduction standard at an offsite location <br /> or through the use of qualified banking credit. <br /> C. Third, as a last alternative, the applicant shall pay into the City's Stormwater Impact <br /> Fund at a $/CF rate. The dollar amount will be approved by the City Council and <br /> will be found within the City's Fee Schedule. <br /> Page 2 of 8 DRAFT <br />