1999 MAY - Laserfiche WebLink

~..~ shall not exceed the normal angle of repose of the excavated materials, and shall not exceed one foot (1') horizon- tal to one foot (1') vertical. C. Temporary cut slopes steeper than one foot (1') horizontal to one foot (1' ) vertical shall be no closer to a property line than twenty five feet (25') plus the vertical depth of the cut, shall be no closer to a public street right of way than fifty feet (50') plus the vertical depth of the cut, and shall be no closer to a stream or channel than one hun- dred feet (100') plus the vertical depth of the cut. D. The excavation of a pit or quarry shall be conducted in such a manner as to prevent accumulation of polluted water or natural seepage to the maxi- mum extent possible, but not preclud- ing the use of pits for recharge purpos- es. E. Dikes and other barriers and drainage structures shall be provided where necessary to prevent silting of drainage channels or storm drains in the area surrounding the excavation. F. Where required by the Commis- sion, final cut slopes shall be treated to prevent erosion, topsoil shall be re- placed on such slopes to support vege- tation and suitable groundcover shall be planted and maintained for a period sufficient to provide vegetation of a density and groundholding capacity that will prevent erosion. G. Material used for refilling a pit or quarry, including overburden removed from elsewhere on the site, shall be of a quality determined suitable to prevent contamination of the groundwater either 18.52.100 during operations or upon completion or termination of operations. H. Quarry or pit excavations that penetrate near or into awater-bearing stratum shall be conducted in such a manner that such stratum will not be subject to pollution or contamination either during operations or subsequent to termination. The Commission may prescribe the maximum depth of a pit or quarry in relation to the depth of any aquifer described and defined in publi- cations of the State Department of Water Resources. I. Fencing shall be provided and maintained surrounding all areas being excavated to prevent unauthorized access in accord with the requirements and specifications of the Public Works Department. Such fencing shall be lo- cated no closer than ten feet (10') from the top edge of a proposed cut slope. J. All reasonable control measures shall be employed to reduce dust in the processing and transportation opera- tions. Haulage roads shall be paved, oiled or watered, and shall be main- tained in a dust-free condition. Access roads shall have pavement at least twenty four feet (24') wide and shall extend from the public street to the permanent public scale but not less than five hundred feet (500' ). K. Vehicles hauling excavated mate- rial shall be loaded in such a manner as to prevent spilling the material while in transit. The Commission may designate which public streets may be used in hauling excavated material, and may prohibit the use of any other street. L. No explosives shall be used 543 (Pleasanton 5-99)