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Union Ice Company <br /> 425 North Union Street, Stockton, California <br /> i <br /> Quarterly Groundwater Report (October, 1993) <br /> i <br /> i <br /> i <br /> Narrative <br /> iOn October 7, 1993, WHF, Inc , in conjunction with HKM, Inc , conducted field <br /> measurements, well pumping and groundwater sampling on four groundwater morntonng <br /> iwells located at this site (Figure 2) <br /> Groundwater elevations were taken prior to pumping (Table 2) Each well was evacuated <br /> i by means of a steam cleaned, stainless steel bladder-type pump At least 3 well volumes <br /> were pumped from each well During the 3 volume pump down of each well, samples <br /> were collected to measure the field pH, electrical conducta"7ty and temperature (Table 3) <br /> Once stability was achieved and a minimum of 3 well volumes were removed, the samples <br /> were collected, labeled and chilled in an ice chest with Blue Icem <br /> IThe samples were then logged on a Chain of Custody form and transported to Geo <br /> Monitor, Inc , a State certified laboratory located in Hesperia, California The analysis <br /> requested for the water samples were EPA method 602 for BTX&E compounds and EPA <br /> method GCFID 3550/8015 for Diesel The analytical results are listed in Table 1 of this <br /> report <br /> Groundwater elevations (Table 2) were used from these four monitoring wells to <br /> construct a groundwater gradient map (Figure 2) The gradient has not changed <br /> I significantly (N60°E at 0 0025 ft/ft) since the July 1993 sampling event (N50°E at 0 0026 <br /> ft/ft) Since the last quarter, the water table has dropped 1 64 feet across the site <br /> I All samples analyzed Non-Detect for all tested compounds The reported contaminants <br /> recorded last quarter were Xylenes at 0 9 ,ug/kg in MW-1 and Ethyl Benzene at 0 6 ,ug/kg <br /> in MW-2 <br /> The above represents our best professional opinion as to environmental conditions at this <br /> site These opinions were derived using data at hand, and using standards of care common <br /> to the environmental consulting community in Northern California Additional work or <br /> sampling at this site may generate data that could lead to a change of opinion regarding <br /> site conditions or appropriate site remediation procedures, or both <br />