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AL county.All three may be used by the seven cities Rec clables Sorted at Site in San Joaquin County and residents of the yunincorporated area.However,due to the loca- ® tion of the new facility, most of the users are Irlm from the north county,including the nearby city ME Ir W�Q U RIMI U0118 3 a wiml jAmpmh A 9dft1L�m miWd1h nAwlk of Lodi and portions of the city of Stockton. Most of the waste from Lodi passes through a aMANIMIMEN ® private recycling center in Lodi.Waste from this center goes directly to the landfill. All other H113W 1AIMIdf waste arriving at the landfill goes through the materials recovery facility. The 516 million project is being financed The recent opening of San Joaquin County's new landfill culminated a permitting process through the sale of bonds that will be repaid that started in 1985 and was complicated by the California Integrated Waste Manage- over time by gate fees at the landfill and recy- ment Act of 1989. The act rewrote the state's waste management law to emphasize source cling center. reduction and recycling. In this article, Tom Horton,San Joaquin County's solid waste The 320-acre site,eight miles east of Lodi manager, explains why his landfill is unique. in eastern San Joaquin County,was previously dry grazing land.The landfill will be sheltered By Tom Horton landfills to be permitted in California in the last from the road with a 105-acre wildlife refuge 15 years. It represents an innovative approach and wetlands area that is under development. he days of disposing refuse in a hole in that is going to be copied throughout the United The wetlands portion will consist of four acres the ground — frequently termed a States because it has a materials recovery facility of vernal pools and 12 acres of marsh and dump—are gone forever.Laws and on site to reclaim recyclable materials. wetlands. The wetlands are being created by requirements imposed by the federal In California,municipal-type landfills are excavating low areas, seeding and filling the and state government have forced local officials classified as Class III landfills. They handle ponds with water pumped from wells.Creation to develop sophisticated and specific types of common residential,commercial and industrial of the refuge was a mitigation measure to offset facilities to handle refuse so that it doesn't waste that is non-toxic and non-hazardous. impacts created by placing the landfill on the contaminate the soil and create a hazard for Class II landfills,like the one in nearby Calaveras property.This area will provide a habitat for a future generations. County,accept municipal-type waste and other variety of bird life and animals common to the The North County Recycling Center and non-hazardous waste that is not allowed at a Central Valley. Sanitary Landfill that recently opened in San Class III site. This may include high moisture The landfill site, -.vhich has a capacity of Joaquin County reflects this philosophy. We waste and contaminated soil that is not toxic. 7.2 million tons of refuse and a life expectancy have gone to great lengths—with the coopera- Class I landfills may accept toxic and hazardous of 40 years,is being developed in stages.There tion and support of our Board of Supervisors— waste. Even though our new site is a Class III will be a series of 10 excavated pits that vary in to protect the environment with a state-of-the- facility,it incorporates design features such as size.Each pit should last about four years;we are art landfill. leachate collection and removal systems that are using the first one now. Our facility,which exceeds the latest state required for Class I and Class 11 landfills. Each pit will slope at least 35 feet and rise requirements,is one of the few municipal-type This landfill is one of three owned by the as a hill on the horizon to 65 feet above ground. Because the hills will be planted with vegetation after completion,they will not look like a land- fill site,but appear much like the rolling hills of the area. Each pit will have a leachate collection and removal system that includes two feet of soil at the bottom of the pit.Below the soil is a textile filter. Below the filter is a drainage liner, and then a plastic liner 60 millimeters thick (in comparison,a strong garbage bag is about 1.5 millimeters thick).Finally,below this liner is a six-inch thick clay liner.There will be monitor- ing devices throughout the area to detect any problems. The bottom of each pit will be sloped so that moisture can collect in one area and be °s� q removed for treatment.Because of this protec- tion,coupled with the fact that our landfill is in San Joaquin County is developing wetlands at the landfill. an area with an extremely low water table and 14 Callfomla County January/February 1992