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S E C O R <br /> r' Ms Vicki McCartney <br /> May 26, 2004 <br /> Page 3 <br /> QUARTERLY RESULTS SUMMARY <br /> Current Phase of Protect -Monitoring/interim Remediation <br /> Groundwater Monitoring Wells <br /> Sampled MW-1 R, MW-2R, MW-3 through MW-10, and VW-1 <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 59,500 gallons <br /> Total Volume of Groundwater <br /> Extracted 983,900 gallons since August 2000 <br /> Approximate Depth to <br /> Groundwater 12 28 to 13 92 ft <br /> Shallow Groundwater <br /> f=low/Gradient East-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 <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 /> Gavan Heinrich at(916)861-0400, extension 248 <br /> Sincerely, <br /> SECOR International Incorporated <br /> 6MIA&*"� <br /> Kristen Flesoras <br /> Project Scientist aED GFOt <br /> /P At GAVAN <br /> Gavan E Heinrich, R G , No 7572 <br /> Senior Geologist <br /> 1 IConocoPhillipslTosco Marketing111193101AM10MRo4 Final doc <br />