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GeoAv4alytical Laboratories, c. <br /> 1405 Kansas Avenue Modesto, CA 95351 Phone (209) 572-0900 Fax (209) 572-0916 <br /> CERTIFICATE OF ANALYSIS <br /> Report# N100-11 <br /> 7 Date: 4/19/02 <br /> Thorpe OilDate Rec'd: 4/10/02 <br /> PO Box 357 Project: Stockton Fire Station-Sonora St. Date Started: 4/16/02 <br /> Lodi CA 95241 Date Completed.-4/18/02 <br /> PO# <br />' Date Sampled: 4/10/02 <br /> Sampler: R.Chrun/R.Azevedo <br /> Sample ID Lab ID RL Method Analyte Results :Units <br /> Soil Sample#1 North@4' N200889 1.0 3550 LUFT Diesel ND mg/Kg ' <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit 0,6 <br /> o-Terphenyl 1.00 0.961 96.1 70-130 <br /> i <br /> I <br /> k Tank @11' N200890 1.0 3550 LUFT Diesel ND mg/Kg <br /> 10 { 'Motor Oil V TM <br /> Surrogate Amnt Spiked Amnt Recovered %Recovery QC Limit% ; <br /> o-Terphenyl 1.00 0.900 90 70-130 <br /> Stockpile#1 N200891 1.0 3550 LUFT Diesel* 16 mg/Kg <br /> Surrogate Amnt Spiked Amrit Recovered %Recovery QC Limit% <br /> o-Terphenyl 1.00 1.05 105 70-130 <br /> *Weathered <br /> Stockpile#2 N200892 1.0 3550 LUFT ' Diesel* 7.1 mg/Kg <br /> 10 Motor Oil 83 <br /> Surrogate Amnt Spiked" Amnt Recovered %Recovery QC Limit 0r6 ' <br /> o-Terphenyl 1.00 1.11 111 70-130 <br /> *Weathered <br /> I <br /> Stockpile#3 N200893 1.0 3550 LUFT Diesel* 56 mg/Kg <br /> 10 e Motor Oil. <br /> Surrogate Arent Spiked Amnt Recovered %Recovery QC Limit% i <br /> o-Terphenyl 1.00 2.18** 218 70-130 <br /> *Weathered <br /> **Surrogate elevated due to high Diesel background. <br /> rego Mer l�dis Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />