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i) Organize and facilitate one (1)virtual workshop (up to 2 hours)with City <br /> stakeholders, including operations and maintenance staff. <br /> ii) The purpose of this workshop is to present the identified operational vulnerabilities, <br /> discuss the conceptual mitigation strategies, and collaboratively prioritize the <br /> improvements based on risk and operational impact. <br /> iii) A summary of the workshop,which may be in the form of meeting minutes or <br /> presentation slides, will be provided to document the discussion and the final <br /> prioritized list of mitigations. <br /> c) A separate technical memorandum will be developed to summarize the results of this <br /> task. <br /> 11)SUSTAINABLE LANDSCAPE MANAGEMENT <br /> a) Lake Decatur Protection Analysis: <br /> i) Define Pollutants of Concern: The analysis will begin by defining the "pollution" to <br /> be addressed. This will focus on non-point source pollutants typically associated with <br /> site runoff, such as sediment(Total Suspended Solids-TSS)and nutrients(e.g., <br /> phosphorus). <br /> b) Develop Alternatives: Develop and compare up to two (2) conceptual alternatives for <br /> passive vegetated stormwater management and surface water protection improvements <br /> along the site's drainage paths to Lake Decatur.Alternatives may include, but are not <br /> limited to, vegetated buffers, bioswales, native prairie plantings, stormwater wetland <br /> features, infiltration areas, or other passive landscape-based best management practices. <br /> The alternatives will be developed at a conceptual level to support planning, cost <br /> estimating, and discussion with the City. <br /> i) Alternative 1:Develop a conceptual passive vegetated stormwater management <br /> alternative focused on reducing sediment, nutrient, and general non-point source <br /> pollutant loading from site runoff prior to discharge toward Lake Decatur.The <br /> alternative will include a general description of the proposed approach, anticipated <br /> benefits, planning-level siting considerations, and conceptual-level implementation <br /> requirements. <br /> ii) Alternative 2:Develop a second conceptual passive vegetated stormwater <br /> management alternative that provides a different level of treatment intensity, <br /> footprint, maintenance approach, or integration with site aesthetics/security. The <br /> alternative will include a general description of the proposed approach, anticipated <br /> benefits,planning-level siting considerations, and conceptual-level implementation <br /> requirements. <br /> c) Security Enhancements through Landscape Design: <br /> i) Provide input on how the proposed landscape design can be used to enhance physical <br /> site security, incorporating principles of Crime Prevention Through Environmental <br /> Design(CPTED). <br /> ii) Considerations will include the use of low-growing, dense, or thorny vegetation to <br /> create stand-off barriers near the perimeter fence and the maintenance of clear <br /> sightlines from the main plant buildings. <br /> d) Conceptual Costing: <br /> i) For each of the Lake Decatur protection alternatives, develop a conceptual-level <br /> (AACE Class 5) cost estimate. <br /> 9 <br />