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, <br /> Union Ice Company - Weber Street <br /> Phase II- Report of Findings <br /> Page 8 <br /> CO-EFFICIENT OF T RA E <br /> WELL THEIS JACOB <br /> NA 4.1 X E-2 <br /> 3 2.8 x E-3 <br /> 4S 3.6 x E-3 <br /> 75 7.6 x E-4 6.1 x E-4 <br /> 9 6.6 x E-4 4 0 x E-4 <br /> There is amazing consistency between the calculated aquifer properties at each well, <br /> when calculated by the three different metho(is. However, the aquifer properties at each <br /> well vary greatly from those measured at adjacent wells. The grain size characteristics <br /> and thickness of Sand 1 vary greatly across the site. it is not surprising then, that the <br /> aquifer properties of this sand would vary greatly across the site. Because of this fact, it <br /> would not be proper to assign an average T and S to the Sand t aquifer at this site. <br /> REMEDIAL EXCAVATION/SOILS CONTAMINATION <br /> r <br /> During February of 1993, the soils which were contaminated by the LUST release, a <br /> this site, were removed for remediation by re-excavation, Approximately 2,000 yards} <br /> of soil were removed from the excavation. <br /> The limits of the contaminated soils to be excavated were defined by exploratory <br /> trenching and side wall sampling. The general outline of the contamination had been <br /> defined by was <br /> tted to San Joaquin Countyeifore. A report n June of 1990�e�ling the results of <br /> this survey as <br /> subm <br /> A map acid cross sections of the explorato:y trench is presented on Plates 4, 5 and 6. A <br /> map of the remedial excavati:n is presented as Plate 7. <br /> Definition of the limits of the contaminated soils was complicated, somewhat, by soil <br /> discoloration due to the presence of native and human deposited carbonaceous material <br /> -- - -- <br /> --- <br /> (peat and woad debris) Found during the course of the excavation.Because of this, a <br /> large number o€ sidewal! samples-were-ta-ken-to_define-the-contamination limits. - <br /> tabular summary of the sample results is presented in'fable 2. <br /> ��� nna„�1AR11 <br />