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B. Requirements for securing equipment likely to topple or undergo severe damage during an earthquake including procedures to avoid topple of furniture and small equipment, C. Communication protocol during and following an earthquake, D. Location of emergency equipment and first aid, E. Transportation routes, (2) 4.7.4: Earthquake Preparedness and Response Plan. Prior to commencement of mining, the applicant staff shall complete an Earthquake Preparedness and Response Plan (EPRP) to address worker safety and plant operation status during and following a major earthquake. The EPRP shall be included or become a supplementary document to the standard site health and safety plan. The EPRP shall be prepared, implemented, and self-monitored by the applicant. The EPRP shall include pre-earthquake and post-earthquake preparedness requirements for the facility that include : A. Emergency evacuation routes to clear people of unsafe equipment and buildings, B. Requirements for securing equipment likely to topple or undergo severe damage during an earthquake including procedures to avoid topple of furniture and small equipment, C. Communication protocol during and following an earthquake, D. Location of emergency equipment and first aid, E. Transportation routes, F. List of on-site contacts, G. Procedures to locate and account for on-site personnel, H. List of current phone numbers for San Joaquin County sheriff and fire prevention, and City of Tracy Fire and Rescue, and I. Post-earthquake facility structure and quarry pit inspections. (3) The EPRP shall be provided to all employees and a copy shall be provided to local fire and rescue departments as well as to the facility file at the County of San Joaquin Community Development Department. The applicant shall update and redistribute when information changes or revisions are necessary. y. HYDROLOGY AND WATER QUALITY (1) 4.8.1a: Excavation/Groundwater Separation. The project applicant, shall, at no time, extend the depth of excavation below the depth of the water table and shall maintain a vertical separation between the water table and the active mining surface. Determination of the water table depth shall be based on historic regional groundwater levels for the unconfined aquifer. The vertical separation shall be determined appropriate by a California-certified hydrogeologist or civil engineer but shall not be less than five feet. (2) 4.8.1b: Groundwater Elevation Monitoring Schedule. The applicant shall monitor groundwater to ensure that the vertical separation between the nearest groundwater surface and the lowest point of the active excavation and reclaimed phases is maintained as required by the California-certified hydrogeologist and at no less than five feet. The groundwater levels shall be monitored on-site prior to and during all phases of excavation, prior to the initiation of excavation for each phase, and in the reclaimed phases. Groundwater shall be continually monitored in the active mining area on a bimonthly basis, within a week following each large rainstorm from October through April, and monthly during the remainder of the year. Conditions of Approval -7 - QX-01-0002