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S E C 0 R <br /> Ms Vicki McCartney <br /> January 29, 2004 <br /> • Page 3 <br /> a <br /> QUARTERLY RESULTS SUMMARY <br /> Current Phase of Project Monitoring/Interim Remediation <br /> Groundwater Monitoring Wells <br /> Sampled MW-1 R, MW-2R, MW-3 through MW-10, and VW-1 w= <br /> Sampling Frequency Sampled Quarterly <br /> Groundwater Monitoring <br /> Frequency Quarterly <br /> Is Free Product (FP) Present <br /> Onsite No <br /> Current Remediation Techniques Migration control via weekly vacuum truck groundwater <br /> extraction <br /> Volume of Groundwater Extracted <br /> this quarter 38,480 gallons <br /> Total Volume of Groundwater <br /> Extracted 958,180 gallons (since August 2000) <br /> Approximate Depth to ^�— <br /> Groundwater 13 72 to 15 36 ft <br /> Shallow Groundwater <br /> Flow/Gradient Northeast at 0 001 ft/ft <br /> . This report presents our understanding of existing conditions at the subject site The conclusions <br /> contained herein are based on the analytical results, and professional judgment in accordance with y, <br /> current standards of professional practice, no other warranty is expressed or implied SECOR <br /> assumes no responsibility for data reported by other consultants or contractors <br /> Should you have any questions or concerns regarding these activities, please feel free to contact <br /> Rusty Benkosky at (916) 861-0400, extension 229 <br /> Sincerely, , <br /> SECOR International Incorporated <br /> i k*v( <br /> Kristen Flesoras E. <br /> Project Scientist <br /> No:C 068399 <br /> * ft 12191!06 <br /> usty Benkosky, P ���` <br /> O� <br /> Senior Engineer CA <br /> q� <br /> %ConocoPhdhps\Tosco Marketing1111931QMR140MR03 Final doc <br /> a <br />