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A. Keith Kaufman, M.S. <br />' Consultant in Environmental Biotechnology <br /> . Serving Industry Government,Academia and the Legal Profession <br />' July 2, 1999 <br />' TO Mr Tim Cuellar (Advanced GeoEnvironmental, Inc ) <br /> FROM A Keith Kaufman <br />' Subject Results of Physicochemical and Microbiological Analyses of Two (2) Soil <br /> Samples (Sierra Lumber) <br /> 1 <br /> Listed below are the results from the referenced analyses performed on two (2) soil samples <br />' collected on 6/11,99 and rece,ved on 6117199 After appropriate dilution, samples were <br /> plated onto TSA and MSA supplemented with 500 ppm of gasoline as sole carbon substrate <br /> Media were prepared at ambient pH Cultures were incubated under aerobic conditions at <br /> room temperature for six (6) days prior to enumeration Physicochemical analyses were <br /> performed in accordance with previously described protocol <br /> Parameter MW8-25 EW 1-25 <br /> • pH 80 7 9 <br /> Nitrate-N (ppm) 60 100 <br /> Nitrate (ppm) 264 440 <br /> Ammonia-N (ppm) 70 80 <br /> Ammonium (ppm) 9 1 104 <br /> Ortho-P (ppm) 282 126 <br /> Potassium (ppm) 87 105 <br /> % Moisture 209 181 <br /> Gen Micr Enum <br /> (CFU X 105/gr) 010 34 <br /> Sel Micr Enum <br /> (CFU X 102/gr) 001 003 <br /> % Biodegraders 10% 080% <br /> r <br /> ND, Not detected at limit of 0 1 ppm/10 Z dilution <br /> CFU, Colony-forming Units Iviable cells) <br />` United States Office Asia-Pacific Office <br /> E <br /> 6245 Bnsiol Parkway#249 2nd Floor,#162 Tung-An Street,Ta-An Distnct Culver City CA 90230 Taipei,Taiwan R O C <br /> (310)822-9385 (310)577-9364[FAX] 886-2-378-3751 886-2-378-3752[FAX) <br />