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Geological?ecFinics Inc. Page 6 <br /> Rehrig Pacific Inc. <br /> Phase II ESA Report <br /> Project No.: 709.2 <br /> January 4, 1999 <br /> TPH-G= <br /> total petroleum hydrocarbons—as gasoline <br /> * = Solvents have chemical specific detection limits <br /> ' ND =non detect <br /> The lab data reports are attached in Appendix A. <br /> 4.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Conclusions <br /> The lab tests results are summarized below: <br /> ' 1. Former Above Ground Storage Tank Area: <br /> • HB-4 - soil contained trace concentrations of motor oil @ 6.5 ft <br /> 2. Former Underground Storage Tank Area: <br /> ' • HB-8 - contained trace concentrations of motor oil @ 6.5 ft <br /> 3. Waste Storage Area—around the boiler house (HB-9): <br /> • shallow soil contamination in the oil stained areas northwest, north, and northeast of <br /> the boil house <br /> ' • moderate diesel to a depth of approximately 4 to 5 ft <br /> • the 5.5 ft sample was clean <br /> 4. Drum Storage Area: <br /> ' • HB-10—did not contain solvents <br /> 5. Former Paint Shed Area: <br /> • GP-3 - contained trace concentrations of xylene in the groundwater sample <br /> ' 6. Trash Compactor Area (HB-7): <br /> • shallow soil contamination in the graveled areas north of the trash compactor <br /> • contains moderate concentrations of motor oil @ 1 ft, the 3 foot sample was clean <br /> 7. Former Storage & Cleaning Area: <br /> ' • GP-2—soil contained trace concentrations of motor oil @ 6.5 ft <br /> • groundwater contamination as follows: <br /> ❑ GP-1 — contained elevated concentrations of motor oil and trace concentrations of <br /> ' xylene <br /> ❑ GP-2 - contained elevated concentrations of motor oil and trace concentrations of <br /> ethyl benzene and xylene <br /> 8. Warehouse Area: <br /> • SB-1 —soil @ 10 ft contained: <br /> ❑ elevated concentrations of diesel <br /> ❑ moderate concentrations of motor oil <br /> • SB-2 <br /> ❑ 1.5 ft soil sample did not contain solvents <br /> ❑ 10 ft soil sample did not contain diesel, motor oil, or solvents <br /> ' Given the data gathered during this soil testing and presented above, Geological Technics <br /> Inc. concludes the following: <br /> 1. Of the eight areas investigated, seven of them contained contamination as reviewed <br /> ' below: <br /> • AST—trace concentration of motor oil @ 6.5 ft <br /> • UST-trace concentration of motor oil @ 6.5 ft <br /> ' 0 Waste Storage (boiler house)—moderate concentrations of diesel @ 1 ft <br />