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City of San Leandro Sewer System Management Plan Volume I RDI/I Rainfall -dependent infiltration and inflow RWQCB Regional Water Quality Control Board SCADA Supervisory Control and Data Acquisition SHECAP Sewer Hydraulic Evaluation and Capacity Assessment Plan SOP Standard Operating Procedure SSMP Sewer System Management Plan SSO Sanitary Sewer Overflow SWRCB State of California Water Resources Control Board UPC Uniform Plumbing Code TM Technical Memorandum WDR Waste Discharge Requirements WPCP Water Pollution Control Plant Background The State Water Resources Control Board (SWRCB) requires that all public wastewater collection system agencies in California with more than one mile of sewer pipe be regulated under General Waste Discharge Requirements (WDR). The WDR mandates that the City prepare an SSMP following the guidelines set forth in the WDR and report SSOs using an electronic reporting system. In addition the San Francisco Bay Regional Water Quality Control Board (RWQCB) requires that the SSMP incorporate the guidelines in the SSMP Development Guide prepared by the RWQCB in cooperation with the Bay Area Clean Water Agencies (BACWA). In July 2009, the City of San Leandro City Council approved the first version of the City of San Leandro Sewer System Management Plan (SSMP). The SSMP was prepared in compliance with requirements of both the State Water Resources Control Board (SWRCB) Order No. 2006-0003, and the SWRCB Order No. WQO 2013-0058, amending the Monitoring and Reporting Program for Statewide General Waste Discharge Requirements for Sanitary Sewer Systems. City of San Leandro Sewer System Management Plan City Service Area and Sewer System The City of San Leandro (the City) is located in Alameda County and is surrounded by Oakland to the north, San Lorenzo and Hayward to the south, San Francisco Bay to the west, with open space preserves and Castro Valley to the east. As of 2013, the City has a population of approximately 88,000 based on estimates from the U. S. Census Bureau. The City covers approximately 13 square miles with a population density of 6,750 persons per square mile. The City is substantially built out and experienced an overall decrease in industry over the last fifteen years. The City's sewer system consists of approximately130 miles of pipe, ranging from 6 inches to 42 inches in diameter, and 13 remote lift stations. The sewers in the City system range in age from Page 14