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OBOLTON <br />& MENK <br />Real People. Real Solutions. <br />December 5, 2016 <br />City of Orono <br />Attn: Adam Edwards <br />P.O. Box 66 <br />Orono, MN 55232 <br />RE: 2017 Storm Water Assessment <br />Dear Adam: <br />2638 Shadow Lane <br />Suite 200 <br />Chaska, MN 55318-1172 <br />Ph: 19521 448-8838 <br />Fax: (9521448-8805 <br />Bolton-Menk.com <br />As requested, we have prepared a scope of services and fee estimate for completing the 2017 Stormwater <br />Pond Assessment for the City. Based on our understanding of the project, we propose the following <br />scope of work: <br />Stormwater Pond Assessment — French Lake (FR), Lake Classen (LC), Maxwell Bay (MB), and Stubbs <br />Bay (SB) Subwatersheds <br />• Coordinate and meet with City as necessary to review and discuss Pond Assessment procedures <br />and results. <br />• Establish location of all stormwater ponds within subwatersheds on City Parcel Maps through <br />review of City Maps, Record Drawings, and visual inspection. <br />• Establish location of City maintained stormwater ponds within subwatersheds with GIS <br />coordinates. <br />• Delineate watersheds for City maintained stormwater ponds. <br />• Define watershed characteristics for City maintained stormwater ponds. Characteristics shall <br />include impervious surface percentage, time of concentrations, areas, and soil types. <br />• Define pond characteristics for City maintained stormwater ponds. Characteristics shall include <br />design permanent volume, estimated existing permanent volume, outlet design, normal water <br />level, and high water level. <br />• Prepare initial rating of City maintained stormwater ponds within subwatersheds as defined in <br />City's Pond Assessment Program. <br />• Prepare recommendations for pond bathymetric surveys to establish accurate existing permanent <br />volumes based on initial ratings and discussions with City. <br />• Provide layer on City's GIS mapping for data generated from pond assessments. <br />• Perform pond bathymetric surveys per previous recommendations, as allowed by available <br />funding. <br />Assumptions <br />• French Lake (FR), Lake Classen (LC), Maxwell Bay (MB), and Stubbs Bay (SB) Subwatersheds <br />are accurately delineated in the City's Surface Water Management Plan dated January 2011. <br />• No Maps or Plans will be generated as part of this proposal. <br />• No surveys will be performed as part of this proposal. <br />• Wetland delineation services will not be required. <br />H:\ORNO\2017 New Projects\Fee Estimate - 2017 Pond Assessments.docx <br />BoLton & Menk is an <br />