1.2 Scope of Services All proposals must be made on the basis of an either meet or exceed the requirements contained herein. All Proposers must be able to provide professional civil and other specialty engineering services to design the Redbud Trail Drainage Improvements located in the area of Dogwood Trail Drive and Redbud Trail Drive, Germantown, Tennessee. Specialists may include civil, hydraulic and hydrologic specialists, permitting and regulatory compliance, estimating services, construction observation and inspection and others as needed to fulfill the requirements of the project. . 1.3 Project Description The Dogwood Forest Subdivision has experienced recurring flooding issues, notably during 2-year rain events. This is attributed to the existing drainage system's inadequate design and performance, dating back to the late 1970s. This project aims to address ongoing flooding concerns within the Dogwood Forest Subdivision, specifically impacting properties along Dogwood Trail Drive and Redbud Trail Drive. The primary focus of the project is to complete a comprehensive evaluation of the existing drainage system to identify deficiencies and develop a revised design to effectively mitigate flooding risks. The project objectives include, improving drainage capacity and efficiency, minimizing flood risks, and enhancing the quality of life in the affected areas. The project will include the following: A. Data Collection: This involves assembling and reviewing data, system planning which will include surveying, locating outfall locations and background information. 1. The types of information to consider include: a. Watershed, land use (existing and expected future), and soils maps b. Flood histories and high water mark elevations, descriptions and performance data for existing drainage systems c. Utility plans and descriptions d. Existing right-of-way and property boundary information for easements 6 e. Federal, state, and local regulations. B. Agency/Stakeholder Coordination: This may involve coordination with internal offices as well as regulatory and other invested agencies. Several jurisdictions and agencies may need to speak into the design of the system. Involving these jurisdictions and agencies early in the design process is essential to designing a system that will suit the needs of all who have an interest in the system. a. Permitting with TDEC and other governmental entities C. Preliminary Concept Development: This involves preliminary layouts for the repaired/modified stormwater drainage system alternatives and conceptual cost estimate. D. Concept Refinement (hydrologic and hydraulic design): This involves the process of moving from preliminary to final design. This may consist of: 1. The types of information to consider include: a. Sizing modified system components (e.g. intakes, manholes, and pipes). b. Repaired/Modified System layout (schematic) c. Computing and reviewing the hydraulic grade line. d. Revising and recalculating until a satisfactory stormwater drainage system repair/improvement is achieved. e. Updating a more definitive opinion of probable construction costs. E. Finalizing Design Documentation: This involves finalizing documentation for the design files and construction plans. Documentation includes the information and resources used to complete the first 4 steps of the design process as well as information related to construction and operation of the system. F. Public Engagement: Assist the City in presenting project design information, set expectations for the project outcomes, and in gaining Construction Access from residents G. Bid Preparation H. Construction Administration: RFI reviews and approvals, progress meetings, pay request review and approval, etc I. Construction Engineering and Inspection
