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NPDES Phase II Considerations The National Pollutant Discharge Elimination System (NPDES) is the enforcement action taken by the Environmental Pollution Agency (EPA) to meet the Clean Water Act. Phase II of this program is directed towards cities with populations greater than 10,000 or cities with designated or concern waters such as the Mississippi River. Lino Lakes is a "designated" Municipal Separate Storm Sewer System (MS4) and currently has a permit that is governed by the City's Storm Water Pollution Prevention Plan (SWPPP). For the storm water budget, a figure of $25,000 per year has been included to address the planned activities. The Storm Water Utility Utilizes: • The "Residential Equivalent Unit" (REU). The REU is the "billing unit" that represents the residential, single - family homes, which make up approximately 90% of Lino Lakes current billing. The REU is easily understood and facilitates billing by allowing the billing department to enter in one value (the REU) for all homes vs. nearly 7,000 individual bills that may differ by only a few cents. The suggested REU for Lino Lakes residential units would be $4.35 per month per address. • Intensity of Development (Land Use). As the intensity of development increases, so does the amount of impervious surfaces, leading to more runoff. • Equivalent Hydraulic Area (Curve number) This engineering methodology is used to measure the amount of impervious surface and is utilized in calculating the amount each property should pay based upon "contributors pay ". • Program budget. What are the anticipated costs? What must you do? What do you want to do? Below is the estimated Storm Water Budgets for years 2007 through 2011. Feasibility Study A- LINOL0602.00 City of Lino Lakes, Minnesota