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for the County in 2015. Model loading for the other SMDs will be developed in a similar manner as that for the City, or taken from previous Master Plans for the SMDs prepared by San Mateo County. The information compiled in the above subtasks will be incorporated into the Task 6 TM on model development, including description of the basis of existing and future model loads, and a digital land use map showing areas of potential new development, infill, and redevelopment that will be used to assign future land uses to specific parcels to develop wastewater flow projections for future scenarios. Deliverables: • GIS files of parcels and associated future land uses. TASK 5 - DEVELOP DESIGN FLOW AND HYDRAULIC CRITERIA Subtask 5.1 - Develop Design Flow Criteria The purpose of this task is to develop the design criteria to be used to compute wastewater flows and analyze system capacity. Design flow criteria include unit base wastewater flow factors applied to residential, commercial, industrial, and institutional land uses; diurnal base wastewater flow patterns; infiltration/inflow parameters; and design rainfall. These criteria will be developed based on the water use and flow monitoring data from the City's system, as well as from the Consultant's master planning experience in other Bay Area systems. The design flow criteria developed in this task will be verified and refined during the model calibration process, as described in Task 6 below. The Consultant will also propose criteria for the design storm to be used for analyzing and determining the required capacity of sewer system facilities. The selection of design storm will take into consideration existing or potential future regulations or regulatory policy on sanitary sewer overflows (SSOs), precedent set by other Bay Area agencies, and published historical rainfall intensity -duration -frequency statistics. The Consultant will make recommendations on revisions or improvements to the City's Sanitary Sewer Standards, Design Criteria (Part VI) and Attachment L. Subtask 5.2 - Develop Hydraulic Criteria The Consultant will identify appropriate hydraulic criteria to be used for assessing the capacity of the system. These criteria include Manning's 'n' factor, maximum d/D values and/or allowable surcharge or minimum freeboard, and minimum and maximum velocities. The criteria will be reviewed and discussed with City staff. Subtask 5.3 - Meeting with Selected City Staff The Consultant will present and discuss information from Tasks 4 & 5. Subtask 5.4 - Prepare TM REV: 01-28-19 PR Page 14 of 21 ATTY/AGR.2019.012/Woodard & Curran