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© 2004-2016 DKF Solutions Group, LLC. All rights reserved. OERP Page 6 UNTREATED OR PARTIALLY TREATED WASTEWATER: Any volume of waste discharged from the sanitary sewer system upstream of a wastewater treatment plant headworks. WATERS OF THE STATE: Waters of the State (or waters of the United States) means any surface water, including saline waters, within the boundaries of California. In case of a sewage spill, storm drains are considered to be waters of the State unless the sewage is completely contained and returned to the wastewater collection system and that portion of the storm drain is cleaned. 4. State Regulatory Requirements for Element 6, Overflow Emergency Response Plan General Waste Discharge Requirement (GWDR) The collection system agency shall develop and implement an overflow emergency response plan that identifies measures to protect public health and the environment. At a minimum, this plan must include the following: (a) Proper notification procedures so that the primary responders and regulatory agencies are informed of all SSOs in a timely manner; (b) A program to ensure appropriate response to all overflows; (c) Procedures to ensure prompt notification to appropriate regulatory agencies and other potentially affected entities (e.g. health agencies, regional water boards, water suppliers, etc.) of all SSOs that potentially affect public health or reach the waters of the State in accordance with the Monitoring and Reporting Program (MRP). All SSOs shall be reported in accordance with this MRP, the California Water Code, other State Law, and other applicable Regional Water Board Waste Discharge Requirements or National Pollutant Discharge Elimination System (NPDES) permit requirements. The Sewer System Management Plan should identify the officials who will receive immediate notification; (d) Procedures to ensure that appropriate staff and contractor personnel are aware of and follow the Emergency Response Plan and are appropriately trained; (e) Procedures to address emergency operations, such as traffic and crowd control and other necessary response activities; and (f) A program to ensure that all reasonable steps are taken to contain untreated wastewater and prevent discharge of untreated wastewater to Waters of the United States and minimize or correct any adverse impact on the environment resulting from the SSOs, including such accelerated or additional monitoring as may be necessary to determine the nature and impact of the discharge. The Sewer System Management Plan and critical supporting documents are available to the public on the City’s website: www.redwoodcity.org 5. Goals The City’s goals with respect to responding to SSOs are: • Work safely; • Respond quickly to minimize the volume of the SSO; • Eliminate the cause of the SSO; • Prevent sewage system overflows or leaks from entering the storm drain system or receiving waters to the maximum extent practicable; • Contain the spilled wastewater to the extent feasible; • Minimize public contact with the spilled wastewater; • Mitigate the impact of the SSO; • Meet the regulatory reporting requirements; • Evaluate the causes of failure related to certain SSOs; and • Revise response procedures resulting from the debrief and failure analysis of certain SSOs. 6.2.A. - Page 100