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i <br /> 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 /> Listed below are the results from the referenced analyses performed on two (2) soil samples <br /> collected on 6/11/99 and received on 6117199 After appropriate dilution, samples were plated <br /> onto Trypticase Soy Agar (TSA, for general microbial enumeration) and Minimal Salts Agar <br /> (MSA) supplemented with 500 ppm gasoline as sole carbon substrate Media were prepared <br /> at ambient pH Cultures were incubated under aerobic conditions at room temperature for six <br /> (6) days prior to enumeration Physicochemical analyses were performed utilizing the HACH <br /> Spectrophotometric System in accordance with manufacturer's specifications <br /> RESULTS <br /> Parameter MWS-25 EWl-2-5 <br /> pH 8 0 7 9 <br /> Nitrate-N (ppm) 6 0 100 <br /> Nitrate (ppm) 26 4 440 <br /> Ammonia-N (ppm) 7 0 8 0 <br /> Ammonium (ppm) 9 1 104 <br /> Ortho-Phosphate (ppm) 28 2 126 <br /> Potassium (ppm) 87 105 <br /> % Moisture 209% 18 1 % <br /> I <br /> Gen Micr Enum <br /> (CFU X 1051gr) 010 3 4 <br /> Sel Micr Enum <br /> (CFU X 1051gr) 0 01 003 <br /> f % Blodegraders 10% 080% <br /> ND, Not detected at limit of 0 1 ppm 1 10 2 dilution <br /> 1 United States Office Asta-Pacific Office <br /> 6245 Bristol Parkway#249 2nd Floor #162 Tung-An Street,Ta-An District <br /> 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 />