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f [ L. _I Z— 1 '7� 1t .P a _ 1 f 1 ♦ 1 a 1' t !. F l <br /> NLrx4_ TOTAL RECOVERABLE PETROLEUM HYDROCARBON <br /> T*7XING STANDARD METHOD 5520F <br /> A B 0 R A T 0 R I E 5 N C LABORATORY CONTROL SPIKE <br /> FRESNO/MODESTO/VISAUA/SAKERSFEELD/SAUNAS QUALITY CONTROL REPORT <br /> Analyzed By:John Aguirre Reviewed By: S.SHARMASARKAR,Ph.D. <br /> Date of Extraction:2126103 Date of Analysis: 2/26103 <br /> Twining Laboratories,Inc.Run ID Number:TLIR022603 Sample Matrix:Soil <br /> Spike ID:WS 1832 <br /> ►; Constituent Method Blank Laboratory Laboratory Laboratory Acceptable Laboratory Laboratory Relative <br /> Concentration Control Spike Control Spike Control Percent Control Spike Control Spike Percent <br /> (mg/kg) Concentration Recovery Spike Recovery Percent Duplicate Difference <br /> Level (mg/kg) Duplicate Range Recovery Percent (%) <br /> (mg/kg) Recovery (%) (0/n) Recovery - <br /> (mg/kg) Low High (%) <br /> TRPH 0.00 500 553 551 70 130 111 110 0.38 <br /> EXPLANATIONS: <br /> Non-Detectable,the target analyte was not found above the detectable limit for reporting purposes(DLR), r <br /> mg/kg milligrams per kilograms,parts per million(ppm)concentration units. <br /> Method Blank: The method blank is used to determine if method analytes or other interferences are present in the laboratory <br /> environment,the reagents or equpiment. <br /> Laboratory Control Spike: A laboratory control spike is generated by adding the target analyte(s)into a relatively inert matrix(sodium sulfate or <br /> distilled water). The laboratory control sample is analyzed exactly like a sample,and its purpose is to determine whethe <br /> the methodology is controlled and the laboratory is capable of making precise and accurate measurements. <br />