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`wl <br /> storage ponds or surface discharge points were located on the subject property. When a vat was <br /> drained it was piped through the treatment system and into the sewer. <br /> SOIL SAMPLING/BORINGS <br /> Soil samples were first collected in January 1987 by Kleinfelder. They collected 3 samples at <br /> depths of 5, 10, and 15 feet deep adjacent to the pickle factory on the west side of the Stockton <br /> District Office site at,103 North E Street (Table 1). The only documentation regarding these <br /> samples is an inter-office memo from Dan Barber of Teichert Aggregates in Sacramento to Bob <br /> Hamel dated April 30, 1987. Dan starts "Pursuant to your request of December 1986, I <br /> instructed Kleinfelder..." He also states "the high level of aluminum ions contained in the soil <br /> reflect alum used in the pickling process." This conclusion proved to be incorrect as discussed <br /> below. <br /> Further evaluation of the aluminum levels indicates that they are at the low end of the measured <br /> range of concentrations for native soils (Dragon and Chiasson, 1991) and are simply reflective <br /> CD <br /> of the ubiquitous aluminosilicates in any mineral soil. <br /> MONITORING WELLS <br /> Wells MW6 through MW8 were installed in November 1989, and wells MW9 through MW11 <br /> were installed in March 1990 for the petroleum hydrocarbon investigation in the eastern portion <br /> of the property ('fables 2 and 3). <br /> Soils encountered during the overdrilling MW6 consisted of silty sand (52-53.5), silt (53.5-58), <br /> sand (58-65) and silt (65-82). MW7 consisted of silty clay to clayey silt with minor sand (1.5- <br /> 58.5), silty sand (58.5-61.5), silt (61.5-71), silty sand (71-73.5) and silt (73.5-77.5). MW8 <br /> consisted of silty clay to clayey silt with minor sand (1-29), sand (35.5-40), clayey silt to silt <br /> (40-75.5), silty sand and sand (75.5-79), and silt (79-85). <br /> REPORT OF SODIUM IN UPPER SOILS <br /> Twelve soil samples were collected on January 19, 1990 and analyzed using the Western States <br /> Salinity Test. Three samples were collected from each test hole at depths of 6, 18, and 30 <br /> inches, and three background samples were collected from a planter area along Weber St. east <br /> of the site (Table 4). Near surface soil in some areas onsite was apparently enriched in calcium, <br /> magnesium, sodium and chloride. This is consistent with incidental surface spillage of brine. <br /> gro mdu\teichcrAsitehist 2 <br />