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SECTICN 2- SITE OPERATIONS PLAN Page 2-22 precipitation and drainage control facilities shall be completed to prevent erosion or flooding of the facility and to prevent surface drainage from contacting or percolating through wastes. a During the rainy season, a minimum one-foot thickness of low permeability cover shall be maintained over all but the active disposal area of the landfill unit. The active disposal area shall be confined to the smallest area practicable based on the anticipated quantity of waste discharge and other waste management facility operations. 2.3.2 Disposal Operations Prudent road maintenance is critical during times of hedvy or prolonged rainfall to keep the landfill operating smoothly. One road grader or "blade" should be operating almost continuously during these times, stripping loose mud and removing ruts from all unpaved access roads. Temporary access roads on the landfill should be covered with an all-weather material surface. Suitable on-site material excavated during the course of the year may be stock-piled until needed, and/or the operation of the borrow pit could be managed so that suitable material is exposed an available at the start of the rainy season. Alternatively, off-site materials, such as sand, gravel and crushed construction debris, could be used for construction of trafficable road surfaces. Prior to the rainy season, a dumping pad should be constructed adjacent to the portion of the landfill to be used during the anticipated wet weather. The dumping pad is to be constructed of a suitable all-weather surface (such as asphalt paving or rubble). Incoming trucks will dump their loads on the dumping pad and then landfill equipment will move the waste into the current active cell of the landfill. 2.3.3 Stormwater Run-Off In order to reduce the amount of water entering the leachate collection system, an aggressive stormwater run-off management program is required. Under this program, a combination of berms, diversion ditches and other drainage structures (as required)will be used to divert run-off from areas of the landfill that have received intermediate cover into the stormwater collection system. This will require high quality control in the placement and maintenance of any inter- mediate cover, so that it is properly graded and that it is free of litter and refuse. 2.4 INSPECTION AND MAINTENANCE 2.4.1 Stormwater Maintenance A regular inspection and maintenance plan is needed for efficient performance of the on-site stormwater drainage facilities. The intent of the stormwater maintenance plan is to provide satisfactory quality and flow controls for the system. The major components of the stormwater system are ditches, pipes/culverts, detention basins, berms, and oillwater separators. The maintenance requirements for these components are described below and summarized in Table 2-3. Stormwater facilities should be inspected during major storms to assure proper functioning of system. R.W.Bec,va Assoczas C4 of Stockton !S11.002