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Industrial Developments International,Inc. Massie Park UST Removal Page 3 results of analyses and a copy of the chain-of-custody record for the soil samples are included in Appendix r B. TABLE 1—Soil Sample Laboratory Results (April 9,2002 TPH TPH-D B T E X Gasoline Total G OG enates Lead Detection 1.0 5.0 0.005 0.005 0.005 0.010 0.005-0.050 5.0 Limits: mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg Sample I.D. 3523D-TK1-8' ND ND ND ND ND ND ND 9.6 3523D-WP-0-6"&3523D-EP-0-6" ND ND ND ND ND ND ND 31 Notes: Gasoline tes include meth 1 tertiary-butyl ether E, Oxygens y (MTB ) tertiary-butanol, mg/kg=milligram&3dlogmm=parts per million(ppm) di-isopropyl ether(RIPE),ethyl tertiary-butyl ether(ET13E),and tertiary-amyl- ND=not detected at or above laboratory detection limits methyl ether(TAME). Soil sample lead concentrations exceeding the laboratory reported detection limits are common in the region. Previous work conducted by Condor includes soil sampling for lead analysis at locations that were subsequently approved as school sites by the California Department of Toxic Substances Control (DTSC). The lead concentrations in soil samples collected from some of these sites were as high as 45, 55, and 42 mg/kg. Additionally, the Kearney Foundation Special Report Background Concentrations of Trace and Major Elements in California Soils indicates that typical background levels of lead in California soils can be as high as 97.1 mg/kg. The lead concentrations in the soil samples collected at the site are not indicative of contamination in association with the UST and are indicative of naturally occurring background soil lead concentrations. 6.0 CONCLUSIONS AND RECOMMENDATIONS Based on the field observations and soil sample data indicating that no release of tank contents occurred and that none of the requested analytes were detected at or above the laboratory reported detection limits in any of the soil samples collected at the site, except lead, Condor recommends that the site receive no further action status from SJCEHD. 7.0 LIMITATIONS ,ss, Condor developed the interpretations and conclusions presented herein in accordance with generally accepted principles and practice. Conclusions presented in this report are professional opinions based on limited information obtained at the time of our site visits. Condor has endeavored to determine as much as ` practical about the site using conventional practices given our scope of services. Condor makes no representation as to the subsurface conditions at locations or times other than those sampled by our employees and reported in this document. If any changes are made or errors found in the information utilized in this report, the interpretations and conclusions contained herein shall not be considered valid unless the changes are reviewed by Condor and either appropriately modified or re-approved in writing- 49% riting.iCONDOR