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© 2004-2016 DKF Solutions Group, LLC. All rights reserved. OERP Page 17 9.2 Water Quality Sampling and Testing Water quality sampling and testing is required for Category 1 SSOs of 50,000 gallons or greater to determine the extent and impact of the SSO. The water quality sampling procedures must be implemented within 48 hours and include the following: • The first responders should call to have samples collected as soon as possible after the discovery and mitigation of the SSO event. o For Impacted Creeks/Channels: Storm Drain Maintenance Leader Pager: (650) 216-0731 Cell: (650) 740-7450 o For Impacted Lagoons: Storm Drain Maintenance Utilities Specialist Pager: (650) 216-0730 Cell: (650) 740-7451 • The water quality samples should be collected from upstream of the spill, from the spill area, and downstream of the spill in flowing water (e.g. creeks). The water quality samples should be collected near the point of entry of the spilled sewage. • The samples shall then be brought to the San Mateo County Environmental Health Lab. 9.3 Water Quality Monitoring Plan The City Water Quality Monitoring Plan will be implemented immediately upon discovery of any Category 1 SSO of 50,000 gallons or more in order to assess impacts from SSOs to surface waters. The SSO Water Quality Monitoring Program will: 1. Contain protocols for water quality monitoring. 2. Account for spill travel time in the surface water and scenarios where monitoring may not be possible (e.g. safety, access restrictions, etc.) 3. Require water quality analyses for ammonia and bacterial indicators to be performed by an accredited or certified laboratory. 4. Require monitoring instruments and devices used to implement the SSO Water Quality Monitoring Program to be properly maintained and calibrated, including any records to document maintenance and calibration, as necessary, to ensure their continued accuracy. 5. Within 48 hours of the City becoming aware of the SSO, require water quality sampling for ammonia and total and fecal coliform. 6. Observe proper chain of custody procedures. 9.4 SSO Technical Report The City will submit an SSO Technical Report to the CIWQS Online SSO Database within 45 calendar days of the SSO end date for any SSO in which 50,000 gallons or greater are spilled to surface waters. The Public Works Supervisor will supervise and prepare this report. This report, which does not preclude the Water Boards from requiring more detailed analyses if requested, shall include at a minimum, the following: Causes and Circumstances of the SSO: • Complete and detailed explanation of how and when the SSO was discovered. • Diagram showing the SSO failure point, appearance point(s), and final destination(s). 6.2.A. - Page 111