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Lodi City Landfill November 16,2011
<br /> North of Awani Drive,Lodi,California Project No. 104690061
<br /> Their report provided a site history section based on discussions with the representatives of the
<br /> City of Lodi. It was indicted that the refuse disposal of the City of Lodi was contracted to an in-
<br /> dependent firm called Sanitary City Disposal, California Waste Removal Company. Foundation
<br /> Engineers contacted staff at the waste disposal company and learned that the site had been used
<br /> as a "non putressible dry garbage dump from approximately 1935 to 1955, and that intermittent
<br /> activity at the dump since 1955 had occurred."The person interviewed from the waste disposal
<br /> company indicated that to the best of his knowledge, only grass clippings, tree limbs, leaves
<br /> "and the like"had been dumped on the site when it was "under the control of the municipality."
<br /> Foundation Engineers also interviewed persons in the community of Lodi who reported that the
<br /> site had been used to dispose foundry wastes, household garbage, construction wastes, etc.
<br /> Foundation Engineers noted that most of the site history they obtained was based on personal
<br /> interviews with little documented information.
<br /> Foundations Engineers indicated that at the time of their investigation, the site had an undulating
<br /> topography with approximately 20 to 30 feet variation in elevation, and a large mound near the
<br /> central portion of the property. It was stated, "Surface debris in the form of leaves, tree limbs,
<br /> glass, trash, and chunks of concrete and asphalt were noted."The majority of the site was reported
<br /> to be covered by light to moderate concentrations of dry weeds and grass, which varied in height
<br /> from 12 to 24 inches.A large storm drain box was observed at the southwest comer of the property.
<br /> Foundation Engineers advanced eleven borings within and outlying the wastes to depths ranging
<br /> from 20 to 45 feet below ground surface (bgs) and seven test pits were excavated to depths up to
<br /> 18 feet bgs. Their report indicated the fill soils contain various amounts of organic matter, tree
<br /> limbs, grass clippings, leaves, debris, (lenses of organic materials), gravels, rocks, concrete,
<br /> waste construction materials, metal, glass, etc. The boring logs were included in the report, how-
<br /> ever, test pit logs were absent from the report copy. Boring logs reviewed indicated the presence
<br /> of the following subsurface materials in no particular order: gravel, trash, rock, organic trash and
<br /> debris, grasses, clippings, glass, wood, paper, rocks, asphalt chunks, dry garbage, leaves, and
<br /> wire. Most borings indicated soils and wastes as saturated at depths of 7 to 27 feet bgs and
<br /> groundwater was encountered at depths of 10 to 30 feet bgs. Boring No. 2 located on the top of
<br /> the mound indicated fill/wastes were present to a depth of 25 feet bgs.
<br /> In March 1983, J.H. Kleinfelder &Associates (Kleinfelder) prepared a report titled "Soils In-
<br /> vestigation, Residential Development, Lodi, California." The report presented the results of a
<br /> soils investigation performed for a proposed residential development at Awani and Mokelumne
<br /> Drives in Lodi as part of a planned construction project to consist of developing six residential
<br /> lots. The purpose of the investigation was to evaluate surface and subsurface conditions and pro-
<br /> vide recommendations for types of foundations, slab-on-grade floors, and site preparation and
<br /> grading. Their investigation included excavating four test pits within and outlying the wastes to
<br /> depths of approximately 18 feet bgs. The report indicated intermittent debris was encountered at
<br /> various locations; that the debris was minimal and increased with depths beginning around
<br /> 10 feet bgs. The debris consisted of concrete, asphalt, some wood, glass, and metal. Backhoe Pit
<br /> No. 2 was placed near the center of Lot 1 and revealed a very high organic content from the sur-
<br /> face to the maximum depth of 18 feet bgs.
<br /> 104690061 x final.a« 5 ,Nl*/7YL1&*Q1ar
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