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Fellows Street Drainage Design December 10,2012 JFNow f0 FNew TASK 3: DRAINAGE DESIGN As noted in the modeling scope description, the runoff-conveyance model will help us develop an integrated solution to the drainage issues on Fellows Street. Currently, CBA has done runoff calculations to estimate runoff for the Fellows-Ireland intersection and to size inlets along the intersection. Our modeling will link all contributing areas —street runoff from Fellows, Ireland, Walter, Barbie and Chippewa and any other areas that ultimately contribute drainage to these streets into one model.The modeling will help us select and properly size the Best Management Practices (BMPs)for each problem area. Although we have not pre-selected the BMPs per se,we are prepared to recommend and/or design vegetated swales, bioretention basins, rain gardens, permeable paving systems, drywells, and so on, as needed. Our proposed design sequence will be to develop/help develop concept designs for Part 1 and 2 of design; establish buy-in and/or revise as needed.Test designs with our proposed conditions model and revise again as needed. Our drainage designs will meet or exceed City standards for runoff control and conveyance. Subtasks include: a. Part 1:Assist CBA with Fellows/Ireland intersection drainage design b. Part 2: Drainage design outside of Fellows/Ireland intersection c. Proposed conditions model d. Concept Designs Deliverables: 1. Part 1 Concept Design sketches 2. Part 2 Concept Design sketches TASK 4: CONSTRUCTION DOCUMENTS For Part 1, advising on the CBE intersection design, we have assumed CBE will develop the construction documents and that we will provide drainage design advice.This scope and budget includes our submittal of sketches, some limited details in CAD and sample specifications for Part 1 to CBE. For Part 2, we have assumed that as the design engineer, we will deliver the entire design documentation for the Fellows Street problem areas outside of the Fellows-Ireland intersection.We have also assumed that we will deliver the Part 2 design deliverables both in hardcopy and electronic format(CAD and WORD documents).The electronic format will allow CBE to efficiently incorporate our design into their complete construction documents.We will also include an engineer's estimate of costs for our Part 2 design. Lastly, we will provide a maintenance plan to the City for the BMPs that we design on this project. Subtasks include: a. 50%design drawings b. 95%design drawings c. Final construction documents d. Maintenance Plan Deliverables: 1. Part 1—concept drawings, example details and specifications 2. Part 2—50%design drawings, hardcopy and CAD files 3. Part 2—95%design drawings, hardcopy and CAD files 4. Part 2— 100% design drawings, hardcopy and CAD files 5. Part 2—specifications 6. Part 2—Engineer's estimate of costs 7. Part 1 and Part 2— Maintenance plans 8. File#0811208.00 www.cardnojfnew,com