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QUOua nterra <br /> Environmental <br /> Services <br /> CASE NARRATIVE <br /> QUANTERRA PROJECT.NUMBER 4923974 ) <br /> } Semivolatile Organics Method 8270 , # <br /> :;. Sample SB-02 (3.5-4) has one surrogate recovery that is slightly high; Re-injection confirms <br /> this result. The sample is not detected for all compounds and there is. no affect on the r <br /> reported data. <br /> TPH Diesel 7. <br /> Sample SB-42 (3.5-4) has a high surrogate recovery due to the contribution from an unknown <br /> hydrocarbon present in the sample. f <br /> Metals ' <br /> The matrix spike recovery for selenium is slight1v low. As the laboratory control sample is i <br /> acceptable this low bias is attributed to sample matrix. vI <br /> There were no other anomalies associated with this report. <br /> .k <br /> x _ <br /> I� <br /> L <br />