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� v <br /> 0 <br /> A S S D C I A T E S I N C <br /> November 4, 1998 <br /> 13099 <br /> Mr Harlin Knoll <br />' San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Street, Third Floor <br /> Stockton, California 95202 <br />' Subject Additional Subsurface Investigation at Ripon Unified School District 304 North Acacia <br /> Avenue, Ripon, California <br /> Dear Mr Knoll <br /> ATC Associates, Inc has completed a Subsurface Investigation of the above referenced site The <br /> attached report summarizes our activities and findings Additional investigation activities appear <br /> to be necessary to delineate the vertical extent of petroleum hydrocarbon Impacted soil and the <br /> horizontal extent of petroleum hydrocarbon impacted groundwater <br /> If you should have any questions or comments regarding this report or our recommendations, please <br /> feel free to call us at your convenience at (209) 579-2221 <br /> Respectfully submitted, <br /> ATC Associates Inc <br /> 1D.ESS14 <br />' Drew Van Allen JEANN ' <br /> Staff Scientist H C YSirY <br /> al cc1,3 <br /> m <br /> Exp --J 2--LT2 f <br /> 1 <br />' Jeanne Homsey, j, CIVIL <br /> CA Registered Civil Engineer No 47410 ��. OF C ilu\tQ� <br />' Cc Mr Leo Zuber, Ripon Unified School District <br /> Mr Mark List, RWQCB <br /> 1 <br /> e <br />