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<br />-2- <br /> <br />graphic, vegetative, geologic and other characteristics, or the <br />existance and maintenance of onsite storm drainage control, deten- <br />tion, or retention facilities have a hydrologic and sediment/nutrient <br />loading response substantially different from that of similarly sized <br />parcels of the same land use. <br /> <br />To provide for an equitable assessment of storm drainage fees based <br />on reasonably expected contribution of flows and sediment/nutrients, <br />provisions need to be made to permit adjustments or credits to the <br />storm drainage fees for those parcels with unique or unusual charac- <br />teristics. <br /> <br />POLICY STATEMENT <br /> <br />The basis of the City of Roseville's storm water drainage fees is the <br />anticipated relative contribution of storm water volumes and sediment/ <br />nutrient loadings to the storm drainage system from a given parcel. <br />~fuere unique or unusual conditions exist where the actual contributions <br />of water volume and sediment/nutirent loadings from a given parcel are <br />substantially different from those anticipated by the storm drainage <br />fee structure, the public works director or his designate may adjust or <br />credit the storm drainage fee for said parcel to an appropriate level <br />in accordance with the guidelines specified herein. <br /> <br />PROCEDURE STATEMENT <br /> <br />I. Property Owner to Provide Detailed Information <br /> <br />It is the responsibility of the property owner or his agent to <br />present to the public works director or his designate, sufficient <br />information concerning a parcels hydrologic characteristics to <br />permit an accurate assessment of the conditions that exist. This <br />information may include, but is not limited to: <br /> <br />(a) Site plan showing locations of all buildings and other <br />development relative to lot lines. <br /> <br />(b) The total lot area and area of impervious surfaces. <br /> <br />(c) Site topography or contours of sufficient detail to <br />ascertain flow directions, rates and volumes. <br /> <br />(d) Size, details and/or volumetric characteristics of any <br />drainage control facilities. <br /> <br />(e) Hydraulic calculations specifying outflow volumes and <br />rates for various rainfall events. <br />