FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

7-1 THE OF` iNOCHLORINE PESTICIDES .' Twlj' Hig EPA METHOD 8081 LABORATORY CONTROL SPIKE ff LA 80 RAT0RIES , I NC . FRE SNO/MCOESTO/ISALA/BAKERS FIELD/SALINAS QUALITY CONTROL REPORT Analyzed By: Dara P. Vongkhampha Reviewed By: Joseph A. Ureno Date of Extraction: 02/24/2003 Date of Analysis: 02/25/2003 Twining Laboratories, Inc. Run ID Number: 022503 Sample Matrix: Soil Spike ID: WS 1823 COC Number: 70300847.1-14 Constituent Method Blank Laboratory Laboratory Laboratory Acceptable Laboratory Laboratory Relative Concentration Control Spike Control Spike Control Spike Percent Control Spike Control Spike Percenr'' (mg/kg) Concentration Recovery Duplicate Recovery Percent Duplicate Difference, Level (mg/kg) Recovery Range Recovery Percent (%) (mg/kg) (mg/kg) (%) (%} Recovery Low High (%) Lindane(Gamma-BHC) 0.000 0.042 0.040 0.035 52 1 130 95.2 83.3 13 Heptachlor 0.001 0.042 0.040 0.033 63 120 95.2 78.6 19 Dieldrin 0.000 0.042 0.039 0.035 58 120 92.9 83.3 11 Endrin 0.000 0.042 0.047 0.048 83 165 112 114 2.1 EXPLANATIONS ND Non-Detectable; the target analyte was not found above the detectable limit for reporting purposes(DLR). mg/kg milligrams per kilogram,parts per million(ppm)concentration units. Method Blank: The method blank is used to determine if method analytes or other interferences are present in the laboratory environment, the reagents or equpiment. Laboratory Control Spike: A laboratory control spike is generated by adding the target analyte(s)into a relatively inert matrix(sodium sulfatjor distilled water). The laboratory control sample is analyzed exactly like a sample,and its purpose is to determine the methodology is controlled and the laboratory is capable of making precise and accurate measurements.