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City of Redwood City (0011239.02)vi Woodard & Curran, Inc. <br />Sanitary Sewer Capacity Master Plan November 2023 <br />MH Manhole <br />NAVD88 North American Vertical Datum of 1988 <br />NGVD29 National Geodetic Vertical Datum of 1929 <br />NOAA National Oceanic and Atmospheric Administration <br />NRCS Natural Resources Conservation Service <br />PDWF Peak Dry Weather Flow <br />PF Peaking Factor: ratio of peak flow to average flow <br />PS Pump Station <br />PVC Polyvinyl Chloride (Pipe) <br />PWWF Peak wet weather flow: the peak flow during a given storm event from dry weather flow plus <br />infiltration and inflow. <br />RDI&I Rainfall-dependent infiltration and inflow: the infiltration and inflow into a sewer system <br />directly related to a rainfall event. RDI/I may cause rapid, short-term peak flows in the sewer <br />system that recede after the rainfall has ended. <br />R&R Rehabilitation and Replacement <br />RWQCB Regional Water Quality Control Board, San Francisco Bay Region <br />SCS Soil Conservation Service <br />SECAP System Evaluation and Capacity Assurance Plan <br />SFR Single Family Residential <br />SMD Sewer Maintenance District <br />SSMP Sewer System Management Plan <br />SSO Sanitary Sewer Overflow <br />Subcatchment An area tributary to a modeled manhole, used for estimating a flow load to the model (also <br />called a “sewershed”). <br />Surcharge The hydraulic condition in a sewer pipeline in which the elevation of the hydraulic gradeline <br />(water level) is above the crown (top) of the pipe. Under such a condition, the water in the <br />pipe rises into the manholes and could overflow onto the ground if the hydraulic gradeline <br />exceeds the elevation of the manhole rims. <br />SVCW Silicon Valley Clean Water <br />SWRCB State Water Resources Control Board <br />TM Technical Memorandum <br />USDA U.S. Department of Agriculture <br />VCP Vitrified Clay Pipe <br />VFD Variable Frequency Drive <br />WWF Wet weather flow: the flow during rainfall periods, composed on base wastewater flow, wet <br />season groundwater infiltration, and rainfall-dependent I/I. <br />WWPF Wet Weather Peaking Factor <br />WWTP Wastewater Treatment Plant <br />ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A <br />REV: 07-14-25 LF <br /> <br />Page 88 of 317