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.7-1) 71 110�1 '=_11 7� 1.7 1 <br /> } <br /> rHE TOTAL PETROLEUM HYDROCARBON: Diesel <br /> TIVInfivuEPA METHOD 8015 <br /> EST. I N C . LABORATORY CONTROL SPIKE <br /> FRE SNO/M0DEST0/VISALIA/BAKtRSFIELD/SALINAS QUALITY CONTROL REPORT <br /> Analyzed By: Dara P. VongkhamphalFernando Baguinguito Reviewed By J. Ureno <br /> Date of Extraction:2126103 Date of Analysis2127/03 <br /> Twining Laboratories, Inc. Run ID Number: TL022703 Sample Matrix:Soil <br /> Spike ID: WS-181 Q <br /> Constituent Method Blank Laboratory Laboratory Laboratory Acceptable Laboratory Laboratory Relativ._ <br /> Concentration Control Spike Control Spike Control Spike Percent Control Spike Control Spike Percent <br /> (mg/Kg) Concentration Recovery Duplicate Recovery Range Percent Duplicate Difference <br /> Level (mg/Kg) Recovery (%) Recovery Percent (%} <br /> (mg/Kg) (mg/Kg) Low Higb (%) Recovery <br /> L__ _ .— I I I I - <br /> (a/0 <br /> TPH: Diesel 0.0 25.0 21.6 20.4 70% 1130% 86.3% 81.6% 5.6% <br /> EXPLANATIONS: <br /> ND Non-Detectable; the target analyte was not found above the detectable limit for reporting purposes <br /> (DLR)- <br /> g/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 environment, <br /> 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 whether <br /> the methodology is controlled and the laboratory is capable of making precise and accurate measurements. <br />