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EXHIBIT C - MITIGATION MONITORING PROGRAM <br />June 2023 C-19 SF Bay Fiber Optic Cables Project <br /> <br /> <br /> <br />1  Maintain a complete list of agencies (with their telephone numbers) to be <br />2 notified of potential hazardous material spills, including but not limited to, <br />3 the CSLC’s 24-hour emergency notification number and the California <br />4 Governor’s Office of Emergency Services (Cal OES) contact number. <br /> <br />5 Spill Contingency and Hazardous Materials Offshore Plan <br />6 For offshore activities involving work vessels, the primary work vessel (cable-lay <br />7 vessel) will be required to carry onboard a minimum 400 feet of sorbent boom, <br />8 five bales of sorbent pads at least 18 inches by 18 inches square, and a small, <br />9 powered vessel for rapid deployment to contain and clean up any small <br />10 hazardous material spill or sheen on the water surface. The Spill Contingency <br />11 and Hazardous Materials Offshore Plan (SCHMOP) shall provide for the <br />12 immediate call out of additional spill containment and clean-up resources in the <br />13 event of an incident that exceeds the rapid clean-up capability of the on-site <br />14 work force. These offshore measures may be provided as part of a separate <br />15 SCHMOP or combined with the terrestrial plan (SCHMTP) as described above. <br /> <br />16 Location: Terrestrial and marine Project areas <br />17 Monitoring/Reporting Action: All plans to be submitted to CSLC at least 30 days <br />18 prior to start of construction <br />19 Effectiveness Criteria: Implementation of this MM will reduce the potential for a <br />20 release of hazardous materials to the environment. <br />21 Responsible Party: Applicant <br />22 Timing: Before and during construction <br /> <br />23 <br />24 <br /> <br />25 MM HAZ-2: Prepare and Implement an Inadvertent Return Contingency Plan. A <br />26 Final Inadvertent Return Contingency Plan (either one report that describes a <br />27 plan for both terrestrial and marine areas or separate reports for each area) <br />28 shall be submitted to CSLC staff for review and approval at least 30 days before <br />29 starting construction in terrestrial and marine areas. The plan(s) must include the <br />30 following: <br /> <br />31  Measures to stop work, maintain appropriate control materials on-site, <br />32 contain and remove drilling mud before demobilization, prevent further <br />33 migration of drilling mud into the waterbody, and notify all applicable <br />34 authorities in the case of an inadvertent return of any size. <br />Potential Impact: Hazards and hazardous materials – Impacts from horizontal <br />directional drilling (HDD) activities <br />DocuSign Envelope ID: 8D8CF2E2-DF6D-4A11-B610-2B1544DD7C30