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Catchment Profiles <br />Project ID: RR8mB <br />142nd Ave. <br />Hydrodynamic Device <br />Drainage Area — 2.5 acres <br />Location —142"d Ln. NW <br />Property Ownership —Public <br />Site Specific Information — A hydrodynamic <br />device could be installed in -line with the storm <br />sewer system to accept runoff from stormwater <br />catch basins draining 142"d Ave NW and <br />surrounding public and commercial properties. <br />�+ <br />Hydrodynamic Device <br />BfVtPDrainageArea <br />Storm Sewer Line <br />! autfail <br />Catch Basin <br />i <br /># <br />r <br />IV <br />4. <br />r <br />4 <br />pa <br />AM <br />Hydrodynamic Device <br />New <br />• ' - % Reduction <br />Treatment <br />Number of BMPs I <br />Total Size of BMPs <br />ft diameter <br />TP (lb/yr) <br />TSS (lb/yr) <br />Volume (acre-feet/yr) <br />Administration & Promotion Costs* <br />Design & Construction Costs** I <br />Total Estimated Project Cost (2016) I <br />knnual O& <br />Average <br />•� <br />Average 000 <br />30-yr Average •Vol. <br />*Indirect Cost: (24 hours at $73/hour) <br />**Direct Cost: ($18,000 for materials) + ($9,000 for labor and installation costs) <br />***Per BMP: (3 cleanings/year)*(3 hours/cleaning)*($70/hour) <br />City of Ramsey Stormwater Retrofit Analysis <br />