Laserfiche WebLink
LABORATORY CONTROL SAMPLE <br /> QUALITY CONTROL REPORT <br /> for <br /> Hydrocarbons <br /> Analyzed by: M. Langroodi, B—Meadows Reviewed by: C. Loukas R. Stafford <br /> Sample Matrix: Water Spiked Sample ID: Spiking Water <br /> QC Sample ID: 110194 S-BTEX 110194 S-TPHG-Range 102894 S-TPHD-Range <br /> Twining Laboratories, Inc. Examination Number: 694-6418.1-6 <br /> Constituent Method LCS LCS LCS LCS LCS RPD <br /> Blank Expected Result Dup. % Rec Dup. % <br /> Result Conc. (ug/L) Result % Rec. <br /> (ug/L) (ug/L) (ug/L) <br /> Benzene ND 20 20 19 100 95 5 <br /> Toluene ND 20 20 20 100 100 0 <br /> Ethylbenzene ND 20 19 19 95 1 95 0 <br /> Xylenes ND 60 58 58 97 97 0 <br /> TPH-Gasoline Range ND 204 208 211 102 103 1 <br /> TPH-Diesel Range ND 400 285 324 71 81 13 <br /> EXPLANATIONS: <br /> Method Blank: The method blank is used to determine if method analytes or other <br /> interferences are present in the laboratory environment, the reagents or <br /> apparatus. <br /> Laboratory Control Sample(LCS): A laboratory control sample is generated by spiking the analyte into a <br /> relatively inert matrix (clean sand or blank water). The laboratory control <br /> sample is analyzed exactly like a sample, and its purpose is to determine <br /> whether the methodology is in control and whether the laboratory is <br /> capable of making accurate and precise measurements. <br /> RPD: Relative Percent Difference. <br /> ND: None Detected <br /> Dup: Duplicate <br /> TPH: Total Petroleum Hydrocarbons <br /> ug/L: micrograms per Liter (parts per billion) <br /> Rev. 3 8194 <br /> {QCBTEX.WAT) <br />