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E C 0 R <br /> • 7-Eleven Store Number 19976 <br /> Fuel System Upgrade Report <br /> August 7, 2003 <br /> Page 6 <br /> SUMMARY AND CONCLUSIONS <br /> Fuel system upgrade work at the site included the removal of three 10,000-gallon USTs, <br /> replacement of product line piping, and the installation of a 15,000-gallon and 10,000-gallon UST <br /> Soil samples collected beneath the dispenser and product line did not contain TPHg, benzene, or <br /> MtBE above laboratory reporting limits Sod samples collected beneath the USTs contained <br /> maximum concentrations of benzene (0 0087 mg/kg, T2N@13'), TPHg (9 3 mg/kg, T1 N@13'), MtBE <br /> (3 3 mg/kg, TIN@13'), and TBA (18 mg/kg, T1N@13') Based on soil analytical results, the highest <br /> concentrations of hydrocarbons adsorbed to soil appear to be located In the northeastern corner of <br /> the UST pit <br /> Sincerely, <br /> SECOR International Incorporated <br /> JaffAuchterlonle <br /> Senior Geologist <br /> Li'D.Gi}6J v <br /> John Bower, R G <br /> cipal Geologist P <br /> �OF CAL�F� <br /> BPC <br /> v; <br /> Attachments Figure 1 -Site Location Map <br /> Figure 2 -Soil Sample Concentration Map <br /> Table 1 - Fuel System Upgrade Sall Sample Analytical Results <br /> Table 2-Stockpile Soil Sample Analytical Results <br /> Attachment A-- Field Notes <br /> Attachment B-Waste Disposal Documentation <br /> Attachment C- Certified Analytical Reports and Chain-of-Custody Documentation <br /> cc Mr John Wainwright, SECORIMr Ken Hilliard, 7-Eleven, Inc <br /> 19976 Fuel Line&USTs Upgrade Report1 doc S1=COR International Incorporated <br />