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minimum slope stability factor of safety as required in Section 9- 1415.2(k)(4); (6) Fill Slopes. Fill slopes shall be constructed consistent with recommendations from a qualified civil/geotechnical engineer based upon site-specific geologic conditions; m. FENCING: Fencing four (4) feet in height consisting of not less than three (3) strands of barbed wire, or an approved equivalent, shall be placed around the excavation area where slopes steeper than two (2) feet horizontal to one (1) foot vertical are maintained. Six (6) foot high security fencing or art approved equivalent shall be required where slopes steeper than two (2) feet horizontal to one (1) foot vertical are created, if the proximity of such slopes to residential uses or other uses involving a concentration of people so warrants. (Development Title Section 9- 1415.3[1]) n. SCREENING AND LANDSCAPING: Screening consistent with Chapter 9-1020 is required. (Development Title Section 9-1415.3[m]). o. EXCAVATION/RECLAMATION SCHEDULE: The reclamation plan shall show the phases of excavation. Reclamation on one phase of an excavation shall be initiated prior to the start of the next excavation phase. The final reclamation of any phase of excavation shall be completed within two years of the commencement of the reclamation process. Excavation shall be limited so that at any point of time a maximum of one phase is being reclaimed while one phase is being excavated. (Development Title Section 9-1415.3[0]) p. TIME LIMITATION: The Quarry Excavation Permit shall expire four (4) years from the date of approval. q. ANNUAL INSPECTION REPORTS: Annual inspections of the excavation shall be conducted by the County to ensure compliance with the conditions of the permit and the reclamation plan. The County may use professional services as provided for in Section 9-240.11. The consultant shall be selected by San Joaquin County. Upon completion of the annual inspection, the person in charge of the mining operation shall submit to the State Geologist and the County a report which shall contain all the information as required by Section 2207 of the Public Resources Code. The cost of the inspection shall be paid by the mine operator. Additional inspections may be conducted, but the cost of additional inspections shall be paid for by the mine operator only if non-compliance with the conditions of the Quarry Excavation Permit or the reclamation plan is found. (Development Title Section 9- 1415.3[q]) r. PERFORMANCE GUARANTEE: In order to ensure reclamation of the site, compliance with conditions of approval, and compliance with County and state mining regulations, the applicant shall provide performance guarantees as a condition of the issuance of the Quarry Excavation Permit. The amount and form of the guarantee shall be subject to annual review and approval by the County and the state, and the amount shall be adequate to ensure reclamation of disturbed land and/or land to be disturbed during a given phase. The annual review of the financial guarantee shall be coordinated with the annual inspection and approval of successive reclamation security so that the guarantee includes the amount of disturbed land plus the amount of land estimated to be disturbed during the next 12 s