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<br /> <br />THE GIS LAYERS AND ACCOMPANYING <br />DATABASE W1U BE GIVEN TO THE CITY <br />IN THE CITY's DESIRED FORMAT FOR <br />INTEGRAnON INTO ITS GIS SYSTEM. <br /> <br />Each sub-watershed, basin, and evaluation point will have a unique and <br />logical identifier. Assessment results for phosphorus, TSS and water <br />volume-for each of the three timeframes-will be linked to the basin <br />identifiers so easy reference to these specific loading assessment values <br />can be made. The GIS layers and accompanying database will be given to <br />the City in the City's desired format for integration into its GIS system. <br /> <br />With Elk River's Loading Assessment, City staff and Bonestroo will have <br />accomplished the following: <br /> <br />· Drainage areas for all evaluation points for both the 1988, 2004, and <br />2020 conditions <br /> <br />· Appropriate, credible, and defensible calculations and justification for <br />inputs such as runoff coefficients, runoff pollutant concentrations, and <br />infiltration assumptions <br /> <br />· Loading to evaluation points and from Elk River into other jurisdictions for <br />TSS, phosphorus, and water volume <br /> <br />· Documentation including maps and detailed tables (compiled into a single <br />document) that comprehensively summarize methodology and results <br /> <br />Task J De/iverab/es: <br /> <br />. A map defining evaluation points, drainage areas, sub-watersheds, and <br />watersheds for all areas included in the analysis. The map will clearly <br />indicate what areas are not included in the analysis due to not having <br />changed over the analysis timeframe. <br /> <br />. A table outlining land use in modeled areas for three conditions: 1988, <br />2004, and 2020. <br /> <br />. A table comparing TSS and phosphorus loadings and water volume at all <br />evaluation points across the three time frames. <br /> <br />. A table outlining assumptions on the treatment capacity of ponds, <br />wetlands and other BMPs. <br /> <br />. GIS shapefiles for sub-watershed boundaries and evaluation points. 'i <br /> <br />Items we assume are performed by City or County staff in Task J: <br /> <br />· Collect electronic GIS tiles as identified in task 1. <br /> <br />. Identify constructed pond locations. <br /> <br />· Identify drainage patterns and routing in cases where the City's storm <br />sewer base mapping is not clear in this regard. <br /> <br />. Identify areas that have developed since 1988 and what stormwater <br />design standards were applied to these areas when they developed. <br /> <br />. Identify gravel mining areas currently in operation within the City limits. <br /> <br />. Assist in correlating among 2020 guided land use categories, existing land <br />use or zoning, and 1988 land use. <br /> <br />.tt Bonestroo <br /> <br />7 <br />