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J* H. KLEINFELDER &ASSOCIATES <br /> File: 5-1008-21/12:337 <br /> Revised: July 8, 1986 <br /> Page 2 <br /> i <br /> time was operated by the City of Lodi. The County of San Joaquin <br /> operated a landfill on the adjacent parcel to the west. The <br /> solid waste was incinerated and . covered • in trenches. Early <br /> records do * not -identify the exact •location .and depth of these <br /> early trenches. Available information indicates that some <br /> trenches extended onto the PG&E right-of-way which crosses the <br /> City of Lodi property. <br /> The County of San Joaquin leased the City of Lodi property <br /> in January of 1975 and assumed the responsibility for operating <br /> both landfill areas. By this time, the solid waste was no longer <br /> being ' incinerated, and a cut and cover operation had been <br /> established. Compaction of the solid waste was achieved using a <br /> dozer. The solid waste trenches were excavated to a 50-foot <br /> depth with the excavated materials being used for cover. The <br /> county planned to add lifts of solid waste to an average <br /> elevation of 118 feet, approximately 20 feet above the existing <br /> ground elevation. The landfill received solid waste from the <br /> public and .contract carriers. The nature of the solid waste was <br /> typically domestic refuse, commercial refuse, tires, <br /> construction, and demolition waste. The landfill is not <br /> permitted to receive hazardous wastes. <br /> Recent operations at the landfill are similar to past <br /> operations with some improvements as mentioned below. The solid <br /> waste is compactedto a greater degree by a compactor. The daily <br /> cover material is applied carefully to avoid wasting soil. The <br /> operators have added soil cover and graded the top of the <br /> landfill to inhibit .ponding and avoid percolation through the <br /> landfill. <br /> Water quality monitoring •is currently being conducted it the <br /> site to comply with Waste Discharge Requirements issued by the <br /> Regional Water Resources Control Board. As per these <br /> requirements, four wells in the vicinity of the landfill have ° <br /> been sampled and analyzed on a quarterly basis since 1980. <br /> Results of these tests are summarized on Table 2. <br /> The four wells which have been monitored since 1980 are: <br /> o Well No. 1 -- Sawyer, 15250 East Barney Lane <br /> o Well No. 2 -- San Joaquin County Migrant Labor Camp, <br /> 14320 East Harney Lane <br /> o Well No. 3 -- Goehring, workshop located at the <br /> southwest corner of Harney Lane Landfill <br />