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h. REMOVAL OF TOPSOIL: The topsoil may be removed from the site. (Development Title Section 9- 1415.3[g]) i. WEED CONTROL: If noxious weeds are on the site, operations shall be in accordance with instructions from the Agricultural Commissioner of San Joaquin County. (Development Title Section 9-1415.3[h]) j. HEALTH CONSIDERATIONS: This quarry excavation shall: (1) Not cause health or sanitary hazards and shall not create conditions which will cause the breeding or increase of mosquitoes, rodents, or other pests. (2) Provide an approved potable water supply for all employees. (3) Provide approved toilets for all employees (chemical toilets are acceptable). (4) Provide handwashing facilities on or near the approved toilets. (Development Title Section 9- 1415.3[i]) k. SETBACKS No excavation shall take place within twenty-five (25) feet of any property line or right- of-way (nor within the allowed slopes adjacent to said twenty-five (25) foot setback), unless the elevation prior to excavation is more than that of the abutting property, in which case the elevation within said twenty-five (25) foot setback shall at no time be less than that of the abutting property, at the property line. (Development Title Section 9-1415.3b]) I. SLOPES: The following provisions do not apply to temporary interior cut slopes (i.e., working slopes that do not fall within any of the criteria listed below). Temporary interior cut slopes shall comply with the Cal OSHA Code of Regulations and/or the Federal OSHA Code of Regulations as applicable. (Development Title Section 9-1415.3[k]) (1) Terracing Required. All slopes over fifty (50) feet in height shall be terraced with a maximum vertical distance between terraces of fifty(50)feet. Each terrace or bench shall be a minimum of twelve(12)feet wide. (2) Terrace Drainage. Drainage plans with calculations shall be submitted for approval to Development Services Division for all terraces as part of the Reclamation Plan. A. Terraces for reclaimed final slopes shall be sloped back towards the fill and be designed such that runoff is directed to collection points where it can enter catch basins and be conveyed via pipes or other acceptable conveyance to the toe of slope. The spacing of collection points shall be no greater than 1,500 feet, with each reclaimed final slope face that has terracing shall have a minimum of one (1) down drain The method of transporting the water along the flow line of the terrace to the down drain, so as to prevent erosion and possible slope failure, shall be approved by the Development Services Division. B. The method of drainage of terraces for temporary slopes at setback lines shall be submitted to Development Services division for approval. (3) Slope Stability Factors of Safety. When required in this Title to provide site-specific geologic and engineering slope stability analysis, the following minimum slope stability factors of safety shall apply: A. A minimum factor of safety of 1.5 against static deep-seated failure. Conditions of Approval -2 - PA-0500403