SU0007861 - Laserfiche WebLink

Home Browse Search

Draft Environmental Impact Report Page II-17 Forward Inc. Landfill Expansion be designed to divert the water to the storm water collection basin in the southwest corner of the Austin Road Landfill unit. All waste at the proposed Forward Landfill would be separated from the north and south branches of Littlejohns Creek by a levee system or other acceptable method designed to protect the site from a 100-year flood event. • The project includes channel reconfiguration and localized flood protection berms to isolate the landfill surfaces from floodwaters. • The project design shall also include provision of replacement floodplain area and storage volume in an easement along the relocated Littlejohns Creek. • The channel and floodplain storage easement are designed to accommodate the 100-year,24-hour storm. The design would also include a three-foot freeboard. N o additional measures are required. F.2. Uncontrolled Proposed as Part of the Project: Less than erosion from soil The current Forward Landfill drainage control structures and monitoring would Significant stockpiles and landfill continue to be implemented to inhibit erosion and sedimentation in the surfaces,or inadvertent expansion areas. Proposed structural controls include the drainage control spills of refuse or other system and daily cover. Operational controls include maintenance of the substances onsite, could drainage system by keeping ditches clear of debris and excessive vegetation, and contaminate surface making needed repairs to drainage structures. Corrective measures would be water. implemented if inspections show excessive erosion or damage to drainage channels. Eroded areas would be mitigated by removing loose debris followed by replacement,regrading, and compacting the area. Monitoring and protection against sediment from entering the Littlejohns Creek channel would be implemented, including the diversion of part of Littlejohns Creek farther away from the landfilled area. • In order to minimize sediment transport to the Littlejohns Creek,landfill slopes, ridgetops, and peripheral areas would be revegetated to inhibit erosion. No additional measures are required. tw t . ' aw, 00 fW Alp twp a= .dam