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quantity of lubricating oil within the well. The uppermost ground water beneath the proposed site occurs under partially confined condi- tions within gravelly or silty sands. Depths to ground water beneath the base of planned burial cell excava- tions is generally greater than 100 feet. Capillary rise is estimated to be less than 5 feet. This estimate is based on data in Lohman (1972) correlating the height of capillary rise within the grain size of unconsolidated soil. As would be expected in a generally fine-grained alluvial deposit, permeability of sediments beneath the site is low. In situ and labo- ratory tests were conducted during EMCON's assessment to determine average permeability values of the unsaturated and saturated zones beneath the site. Permeability values in the approximately 100 -foot - thick unsaturated zone range from 1 x 10-6 to 2 x 10-8 centimeters per second (cm/sec). Results of both in situ and laboratory permeability testing are summarized in Table 2, including results of testing con- ducted by J.H. Kleinfelder and Associates (1986) on the proposed and adjacent properties. A slug test performed in Well G-1 indicated a _ hydraulic conductivity of 9 x 10-3 cm/sec for the saturated aquifer material. C. GROUND -WATER QUALITY Ground water in the eastern portion of San Joaquin County is generally of excellent quality with low total dissolved solids (TDS) of 120 to 550 parts per million (ppm). Ground -water chemistry data exists from site assessments conducted by EMCON Associates (1987b) and J.H. Kleinfelder and Associates (1980a, 1980b, and 1986). In addi- tion, chemical testing was conducted by EMCON Associates (1987a) on ground -water samples from wells on and adjacent to the nearby Harney Lane Sanitary Landfill. Results indicate that water from monitoring, domestic, and irrigation wells on and adjacent to the proposed PJ9 9390207.00D 5