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" e <br /> - c• Ij 'y a " <br /> ,.t <br /> J� <br /> P,C : <br /> (FROM POTMAPS DATED 01/02, <br /> 03/02, 07/02, 06/03 & 08/04) <br /> MODELED EXTENT OF BENZENE PLUME *THE ABOVE DEPICTION OF THE MAXIMUM EXTENT OF BENZENE <br /> EXCEEDING TIER 1 GRO (5 ug/L).* EXCEEDING THE TIER 1 GROUNDWATER REMEDIATION OBJECTIVE <br /> PROPOSED ORDINANCE AREA (GRO) IS BASED ON 360° MODELING USING RBCA EQUATIONS <br /> R12/R26 AND USING REQUIRED SITE—SPECIFIC PARAMETERS. <br /> BASE MAP OBTAINED FROM MACON COUNTY GEOGRAPHIC INFORMATION SYSTEM, MAP DATE 2009. <br /> MODELED GROUNDWATER PLUME Project No.: SCALE:207009 AS <br /> BIGFOOT SHELL#151 Drawing File: SHOWN <br /> — <br /> Corporate Office R 501 NORTH MAIN STREET 207009_6.dwg FIGURE: <br /> � � Regional Offices Regional Office <br /> Indianapolis, Indiana Louisville, Kentucky Springfield, Illinois <br /> (317) 871-4090 Cincinnati, Ohio (217) 585-9517 DECATUR, ILLINOIS <br /> � Date: <br /> 6/25/2009 <br />