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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> *Client: EMCON Service Request: 5990100€ <br /> Project: Teichert&Sons-Stockton/201790-002.007 Date Collected: NA <br /> Sample Matrix: Soil Date Received: NA <br /> Date Extracted: NA <br /> Date Analyzed: NA <br /> Surrogate Recovery Summary <br /> Fuel Oxygenates <br /> Prep Method: NONE Units: PERCENT <br /> Analysis Method: 8260 Basis: NA <br /> Test P e r c e n t R e c o v e r y <br /> Sample Name Lab Code Notes Dibromofluoromethane Toluene-D8 4-Bromofluorobenzene <br /> SP-IA/B 59901001-025 94 105 109 <br /> SP-2A/B S9901001-026 94 105 112 <br /> SP-3AB S9901001-027 93 107 98 <br /> SP-4AB S9901001-028 92 107 95 <br /> S P-5AB 59901001-029 93 106 98 <br /> SP-6A/B S9901001-030 93 104 109 <br /> SP-7AB S9901001-031 92 104 114 <br /> SP-8AB 59901001-032 92 104 113 <br /> SP-9AB S9901001-033 92 104 114 <br /> SP-10A/B 59901001-034 92 104 116 <br /> P B-11A59901001-035 92 104 114 <br /> -12AB 59901001-036 93 104 112 <br /> Method Blank 5990402-SBI 93 105 ill <br /> EPA Acceptance Limits: 80-120 81-117 74-121 <br />