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S E C ® R <br /> Petroleum hydrocarbons and fuel oxygenates were not detected above laboratory reporting limits in <br /> groundwater samples from borings GP-4 through GP-7 <br /> Groundwater monitoring has been performed since August 1998 First quarter 2003 groundwater <br /> monitoring reported high concentrations ( 10,000 ppb) of TPHg in wells, MW-5, MW-7, and MW-8 <br /> The highest concentrations of benzene (16 ppb) and MtBE (260 ppb) were found in wells MW-8 and <br /> MW-6, respectively Groundwater flow was to the northwest with a gradient of approximately 0 005 ; <br /> to 0 006 ft/ft (Attachment 1) Depth to groundwater ranged from 13 35 (MW-5) to 14 70 (MW-7) feet <br /> bgs (Attachment 1) <br /> RECENT QUARTER ACTIVITIES (First Quarter 2003) <br /> 1 Performed quarterly groundwater monitoring and sampling (GRI) <br /> 2 Prepared and submitted a quarterly summary report <br /> 3 Prepared and submitted "Results of Additional Site Assessment', dated February 12, 2003 <br /> NEXT QUARTER ACTIVITIES (Second Quarter 2003) <br /> 1 Prepare and submit a quarterly summary report <br /> • 2 Perform quarterly groundwater monitoring and sampling (GRI) <br /> CHARACTE RIZATIONIR EM E DIAL STATUS <br /> Soil contamination delineated? Yes <br /> Dissolved groundwater delineated? In all direction except Northeast.of well <br /> MW-12 <br /> 4 <br /> Free product delineated? N/A <br /> Soil remediation in progress? No <br /> Start? NIA <br /> Anticipated completion date? NIA <br /> CONSULTANT SECOR International Incorporated <br /> t <br />