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h . HEALTH CONSIDERATIONS : This quant' 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 hand washing facilities on or near the approved toilets . ( Development Title Section 9- 1415 . 3 [i]) i . 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 . 3 [j ]) ( 1 ) Temporary Cut Slopes at Setback Lings . Temporary cut slopes (i . e . , for limited periods of time , slopes that are in the process of extraction prior to being backfilled) at setback lines shall not exceed one (1 ) foot horizontal to one ( 1 ) foot vertical , except that temporary cut slopes at setback lines to a maximum of one half ( 1 /2) of a foot horizontal to one ( 1 ) foot vertical may be maintained if site- specific geologic and engineering analysis demonstrate through a slope stability analysis that the proposed temporary cut slopes will have a minimum slope stability factor of safety as required in Section 9- 1415 . 3 (k) (4) . However, in the event that there are existing structures on the adjacent property (or the immediate potential for structures on the adjacent property) , the excavation shall at no time be closer to the property line than a line projected on a slope of one ( 1 ) to one ( 1 ) from the property line to the toe of slope . (2) Final Slopes . Final cut and/or fill slopes shall not exceed two (2) feet horizontal to one ( 1 ) foot vertical . (3) Fill Slopes . Fill slopes shall be constructed consistent with recommendations from a qualified civil/geotechnical engineer based upon site-specific geologic conditions ; j . 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 an 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 ]) k . SCREENING AND LANDSCAPING : Screening consistent with Chapter 9- 1020 is required . (Development Title Section 9- 1415 . 3 [m]) ( 1 ) The landscaped area shall be ten ( 10) feet wide . Adequate setback for maintenance shall be required , and sight distance at road intersections shall not be impaired . A row of crop trees satisfies this requirement . L 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] )