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Storm Drain Master Plan Phase 2 I RFP No. 1 as -02 ° Scope of Work Based on the City's requests in the RFP and our experience with similar projects, we recommend the following scope of work: TASK 1 — Review and Research Task 1.1 Review Phase 1 City Storm Drain Master Plan (2015 SDMP) Michael Baker will review the City of Santa Ana Storm Drain Master Plan (2015 SDMP). Data review will include location of known flooded areas, design criteria, hydrology methodology, hydraulic analysis, and prioritization criteria. This task can be completed efficiently since the Michael Baker staff are familiar with the watershed, methodology and constraints within the City of Santa Ana local and regional drainage systems. Task 1.2 Review of Facilities Michael Baker will perform a qualitative review of the priority proposed storm drain system from the 2015 SDMP and identify locations for alternative drainage improvements. This task will require an above- ground field assessment and inspection of existing City owned facilities (parks, City owned vacant lands, schools if desired, etc.). This inventory will include drainage facilities (storm drain lines and channel) throughout the City. Michael Baker will work directly with the City to identify and re- evaluate the priority improvement projects previously identified in the 2015 SDMP. The investigation will identify locations for potential LID flood storage improvements facilities. The collected data will be mapped using GIS and provided to the City. To facilitate the inspection process, Michael Baker will coordinate with the City and the local communities impacted by the field review prior to performing the work. Coordination may include notifying residents and providing educational information about the value of data being collected. A memo summarizing the 2015 SDMP methodology and guidelines will be prepared for City review. This document will serve as an initial reference framework for future decisions as work progresses and unique opportunities are encountered for flood reduction. Deliverables: 1. Inventory Log of All Data Collected 2. Technical Memo highlighting potential projects and alternative solutions TASK 2A — Alternative Improvements Expected Value Conversion Task 2A.1 2015 SDMP Proposed Facility Evaluation Michael Baker will re- evaluate the proposed drainage systems identified in the 2015 SDMP including the recommended improvements list and develop a table highlighting the construction constraints and cost - to- benefit comparison for each project. Construction constraints will be a high -level analysis based on the available utility data provided by the City and street classifications. Project benefits will be valued based on locations of flooding history and theoretical estimation from the hydraulic modeling based on the tributary drainage area to each system. A tabulated matrix will be provided that summarizes this task. Page 1 9 INTERNATIONAL 20C_23