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Sincerely, <br />Advanced GeoEnvironmental, Inc. <br />. _ <br />i <br />cito GEoz <br />44, 0 <br />CALVIN F <br />LEE <br />22 October 2003 <br />AGE-NC Project No. 03-1064 <br />Page 4 of 4 <br />(B5-5), 48 mg/kg (B4-5), 16 mg/kg (B4-5),71 mg/kg (B1-5), 45 mg/kg (B5-5), 70 mg/kg <br />(B4-5) and 71 mg/kg (B1-5, B4-5 and B5-5), respectively; in addition, lead was detected in <br />sample B1-5 at a concentration of 6.7 mg/kg. However, the concentrations of metals fell <br />within the range of background concentrations for these metals in California soils ,and well <br />below the total threshold limit concentrations (TTLC) for hazardous waste established by <br />California. <br />The analytical results are summarized in Tables 1, 2, and 3. A copy of the laboratory report (CTEL <br />Laboratory Project Number CT214-0310086) is included in Appendix B. <br />RECOMMENDATIONS <br />Based on the results of historical research and the absence of detectable contaminants in the soil <br />samples, AGE recommends that no further environmental action be taken at the site. <br />LIMITATIONS <br />Our professional services were performed using that degree of care and skill ordinarily exercised by <br />environmental consultants practicing in this or similar localities. The findings were based mainly <br />upon analytical results provided by an independent laboratory. Evaluation of the geologic conditions <br />at the site for the purpose of this investigation was made from a limited number of available data <br />points (i.e. soil samples) and subsurface conditions may vary away from these data points. No other <br />warranty, expressed or implied, is made as to the professional interpretations, opinions and <br />recommendations contained in this report. <br />If you have any questions or require further information, please contact our office at (209) 467-1006. <br />Donna Sexton Calvin F. Lee <br />Staff Geologist Senior Project Geologist <br />California Registered Geologist No. 7327 <br />t Ct. <br />cc: Ms. Lori Duncan, San Joaquin County Environmental Health Department