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putressible dry garbage dump from approximately 1935 to 1955, �ind that intermittent <br /> activity at the dump since 1955 had occurred."The site is also usod by the homeless as <br /> a temporary "camp". A letter from August 1977 indicated that the !;ite was no longer <br /> being used except for the temporary storage of street sweepings, broken concrete and <br /> pavement, and other miscellaneous debris. The lateral extent of the waste disposal site <br /> is described as currently undeveloped, graded land, roughly rectangular in shape that <br /> occurs south of the bend in the Mokelumne River. <br /> The exact amount of refuse accepted at this site is uncertain. According to a 1982 <br /> engineering study of the site, it appears the northern most portion of the site was <br /> determined to be unsuitable for building due to a high concentration of organic matter. <br /> The study did not include any gas readings to determine explosive= gas concentrations <br /> (if any). A September 1988 preliminary workplan from Kleinfelder stated that <br /> approximately 25,000 cubic yards of waste was disposed of at thE! site based on their <br /> assessment. <br /> The San Joaquin County (EHD/LEA) is asking for assistance frond the State to <br /> determine whether wastes disposed of at the site pose a threat to public health and the <br /> environment with respect to landfill gas (LFG) generation -and potential offsite <br /> migration. It should be noted that the site does not have a LFG m:)nitoring network. <br /> Other areas of concern include hazards associated with the city-wide soil vapor survey <br /> project(s). And the possible residual wastes associated with former industrial waste <br /> ponds and former underground storage tanks (UST). <br /> Due to regulatory changes, the site does not currently comply witli California Code of <br /> Regulations, Title 22, and Title 27 Sections 20921 and 20923 gaE monitoring (perimeter <br /> monitoring network). Therefore, a gas monitoring network and program is warranted to <br /> assess the potential off-site migration of landfill decomposition gasses. <br /> Lodi City Landfill 4 January 2012 <br /> Site Safety and Health Plan <br />