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IN <br /> .Y'-. 3 K F � 3`= M'..w� ,H `. tt�-r -��3h-s1`�1+�`' � �y .en��a let �� • <br /> F` xfp'.'f i.. �aT„ �—"+. � �. A i,!�� �.?'=i..��'•^" f�'S"y-.rr���..-�� �t''S{ X �" y�'~.y, �¢'i 'L i��.�'i <br /> HYDR E L GIC A5.... iENT WQRK PLATt <br /> M SHELL SEkVICE STATION <br /> 520 WEST CHARTER WAy <br /> STOCKTON, CALIFORNIA <br /> DELTA PROJECT NO. 40-88-586 <br /> ��NTRODUCrtn`N <br /> Delta Environmental Consultants, Inc. (Delta), has been authorized to condu,� an assessment to <br /> evaluate the distribution of petroleum constituents in soils and ground water beneath a Shell service <br /> station at 620 West Charter Way in Stockton, California. The assessment is being conducted in <br /> conjunction with excavation and removal of existing underground storage tanks and installation a;. <br /> new tanks, <br /> _ The assessment is intended to determine whether grow.1 water has been affected by petroleum <br /> constituents detected in soils during a prior investigation in an area surrounding the existing tanks <br /> and pump islands. Results of the prior investigation are contained in the Delta report Pretank <br /> Removal Soil Assessment, dated July 3, I989. Soil and water samples will be collected during the <br /> proposed assessment and submitted to a California-certified laboratory for analysis. <br /> The objectives of this site assessment are to: <br /> • EvaIuate the site hydrogeologic characteristics, <br /> • Determine the depth to ground water underlying the site and determine the local <br /> ._ ground water flow direction, <br /> • Determine the location of nearby water-supply wells, <br /> + Determine the distribution of petroleum hydrocarbon constituents in soils`and th�,' <br /> presence and distribution, if any, in ground water at the site. <br /> • Evaluate the need for additional assessment or remedial action. <br />