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Acre based uses can reduce their annual storm water fee by capturing these targeted rainfall events: _ • 10 year, 42" event will reduce the annual fee by 25% ti • 100 year, 7.4" event will reduce the annual fee by 75% u Lot based uses (residential) can receive up to a 50% credit to their annual starm water fee based on the .. percentage of their impervious surface they disconnect from the city infrastructure based on the volume � from a 1" rainfall. Only the drainage area that is treated will be eligible for credit. This program does .. not provide credits for practices that are required by a permit or to meet minimum requirements for a � land use approval. Practices that go above and beyond the permit are eligible for storm water credits. , Property owners that receive cost share funding from a watershed district, state agency, etc., are still �, eligible for the storm water credit program. The proposed storm water credit rates for residential . properties is shown below: 2014 Annual Storm Water Fee $46.80 Impervious Credit Annual Fee Reduced Annual Area Treated % Reduction Storm water Fee 25% 12.5% $5.85 $40.95 50% 25% $11.70 $35.10 75% 37.5% $17.55 $2925 100% 50% $23.40 $23.40 � In both cases (acre based and lot based uses) the property owner will be required to have a Starm Water G�� Permit on file in order to register the Best Management Practice (BMP) that is creating the reduction in �� storm water runoff leaving the property. �� Attached is the proposed storm water credit program that details the proposed credit and also provides �� some examples highlighting various land uses. Below is a partial list of storm water BMPs approved for use in the Storm Water Credit Program: �. • rain gardens • pervious pavers -�� • wet ponds � � • dry wells �� • sand filters . • filter strips " • infiltration trenches ,. • green roofs c The installed BMP's will be certified by the property owner, or agent of the property owner, to show : that the BMP is still functioning as designed. Certification will need to be provided, at a minimum, � every 5 years after the city has approved the project. �. This proposed Strom Water Credit Program replaces an outdated storm water credit policy (see � attached) that was adopted in 1984 when the original Storm Water Utility Fee was established. That � policy allowed up to 100% credit of the starm water fee. Also, the previous policy did not require � recertification of the parameters under which the credit was based upon. This revised policy matches �� current priorities and policies related to storm water management and the capital improvements Page 2 of 3