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DAMES & MOO RE <br /> [MMA DAMES&MOORE GROUP COMVNY <br /> 231 Main Street,Suite 600 <br /> June 15, 1998 San Francisco,CA 9.4107-1917 <br /> Job No. 31581-129-043 -415 8-41 5 888 22 9 9261261 Tel <br /> Fax <br /> Ms. Theresa Dye <br /> Fremont Investment & Loan <br /> 200 California Street, 5th Floor <br /> San Francisco, CA 94111 <br /> Report <br /> Phase II Investigation <br /> 15700 South McKinley Avenue <br /> Lathrop, California <br /> Dear Ms. Dye: <br /> INTRODUCTION AND BACKGROUND <br /> Dames & Moore performed a Phase I Environmental Site Assessment for the above-referenced <br /> property (Figure 1) and presented the findings in our May 27, 1998 report. This investigation <br /> identified potential environmental concerns at the property associated with an underground clarifier <br /> formerly utilized for truck washdown water and the practice of spray painting metal building frames <br /> above bare soil. The soil surrounding the underground clarifier was investigated by Advanced <br /> GeoEnvironmental in October 1997. Eight soil borings were advanced adjacent to the clar.fier and <br /> evaporation pond. Hydrocarbon-impacted soil was encountered near the receiving end of the <br /> clarifier at a depth of five feet below ground surface (bgs). One soil sample from boring 133 was <br /> impacted by 350 parts per million(ppm)Total Petroleum Hydrocarbons as gasoline(TPH-gasoline), <br /> 10,000 ppm TPH-diesel, and 0.094 ppm tetrachloroethene (PCE). These constituents were not <br /> detected in the sample collected at a depth of 10 feet in the same boring. These constituents were <br /> only detected in one other boring at low levels, 1.6 ppm TPH-diesel and 0.045 ppm PCE. This <br /> investigation, however, did not include sampling of groundwater,which is relatively shallow in the <br /> site vicinity. Our Phase I report recommended additional subsurface investigation to evaluate the <br /> potential impacts to groundwater near the clarifier and the potential impacts to shallow soil from <br /> spray painting. <br /> SCOPE OF SERVICES <br /> To evaluate the concerns described above,Dames &Moore performed the following specific tasks: <br /> • Advanced one soil boring (B-9) using a direct-push drilling rig, operated by Vironex Inc., <br /> of Hayward, California, to groundwater adjacent to the underground clarifier/evaporation <br /> pond area, Figures 2 and 3. Soil samples were continuously cored and screened in the field <br /> ` for organic vapors. A detailed field log of soil lithologies was maintained. One grab <br /> oundwater sample was collected through a hydropunch screen inserted into the borehole <br /> fJM013\17REMONTIATHRON.RPT <br /> Offices Worldwide <br /> L._ <br />