ARCHIVED REPORTS_1993_1 - Laserfiche WebLink

Home Browse Search

S. Summary The landfill would be developed in six phases expd�ng south of the existing landfill,ll,then atop the existing landfill. This fill sequence would allow for maximum settling of the existing landfill before filling on top of it and for more information to be gathered regarding expansions atop of old landfills. Fill would extend up to 150 feet above the mean sea level. Key design features for the expanded landfill include a composite liner system, a leachate collection and removal system (LCRS),a surface water control system,including the realignment of Little Johns Creek,and a landfill gas control system. The project would provide for approximately 38 years of additional landfill capacity,accepting an average of about 1,160 cubic yards of waste per day. The landfill would continue to be owned and operated by the City of Stockton. A private contractor,Gambi Enterprises,operates the landfill for the City. Up to seven staff members(with the scale operator being a City employee) would operate the facility,which would be open from about 6 a.m.to 3 p.m.,Monday through Friday. The scare operator would screen waste loads by asking questions and visually inspecting incoming loads. Should they visually detect drums,barrels,or other prohibited or dangerous wastes,the load would be rejected. Once the waste is dumped by the contract or permitted hauler,the landfill operating crew would push layers of waste two feet thick or less onto the working face and compact it with a bulldozer. A the end of each working day, six inches of soil would be placed on top of the waste. To control dust at the site,landfill operators would use a water truck to apply water to the waste on the basis of visual observations of dust levels. A balance will be made between keeping dust levels down and keeping the generation of excess leachate to a minimum. Once an individual landfill cell has reached its capacity,a one foot layer of sand/gravel/till material would be placed over the cell. This soil layer would serve as an intermediate cover and become the working surface for placement of the next lift of refuse. The landfill final cover (landfill cap) would be installed no later than 15 months after placement of the final lift. The landfill cap would include landscaping with non-native grasses. As required by the California Integrated Waste Management Board(CIWMB)and the State Water Resources Control Board(SWRCB),the City of Stockton Department of Public Works would maintain and monitor the site for a minimum of 30 years after the landfill has been closed or for as long as the waste poses a threat to public health and safety and the environment. SA