R2022-188 Resolution Authorizing Amendment No. 3 for Professional Engineering Services Agreement with Northwater Consulting for Lake Decatur Watershed Management Plan, City Project 2019-38 (2)

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Lake Decatur Watershed Management Plan—Phase IV Scope of Services&Budget During previous phases, special projects and initiatives were identified that could generate significant water quality benefits to the lake and watershed. This task includes advancement of some of these projects, including the identification of opportunities and grants to leverage funding for implementation. These projects included: 1. Upper lake and Big/Long Creek floating wetland system. 2. Specialty crops,fertilizer field trials,treatment wetland and erosion control at the DeWitt well field. 3. Conservation practices on City-owned farmland. 4. Carbon and water quality trading pilot program. 5. Development of sediment dewatering basin to forward opportunities that generate revenue for watershed improvements and grant "match." a. Production agriculture and organic crops. b. Conservation and innovation. c. Marketing and outreach initiatives(i.e. locally sourced products). This task is available to support further advancement of some or all of these projects on an opportunity basis. These project opportunities all require coordination and synthesis between the City, stakeholders, landowners, regulators, and the private sector. In Phase IV, a special project priority is to advance feasibility analyses, develop cost estimates, and explore funding opportunities for the anchored floating wetland concept. Task 4.8, Section 319 BMP Engineering & Design Northwater will provide survey, engineering and design services under Phase IV for up to four BMP projects. A preliminary list of projects is outlined below, however,the specific projects are subject to amendment. • This task includes up to four projects o The Atkins property(Bluffs subwatershed)terraces and grade control structures o The Bendsen property(Friends Creek subwatershed)wetland/pond o The Jacobs property(Bluffs subwatershed) ponds and dry dams o The City-funded DeWitt wellfield terrace BMP project(not Section 319) This task is not intended to include survey,design and engineering services for special projects (Task 4.6)or 2023 City- funded BMP projects. For completion of ongoing 2022 City-funded BMP projects, Northwater will utilize remaining budget from Task 3.6 of Phase III.