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1111c ' !r ill; � '� � 11 r�lrlllc r'IC11 '� r l!4 r 'i <br /> PAGE 3 <br /> AEN (CALIFORNIA) <br /> QUALITY CONTROL REPORT <br /> AEI JOB NUMBER 9603099 <br /> CLIENT PROJECT IO R 603 <br /> Quality Control .,and Project Summary <br /> All laboratory quality control parameters were found to be within established <br /> limits <br /> Definitions <br /> Laboratory Control Sample (LCS)/Method Spike(s) Control samples of known composition LCS and Method Spike <br /> data are used to validate batch analytical resutts <br /> Matrix Spike(s) Aliquot of a sample (aqueous or solid) with added quantities of specific compounds and <br /> subjected to the entire analytical procedure Matrix spike and matrix spike duplicate CC data are advisory <br /> Method Blank An analytical control consisting of all reagents, internal standards, and surrogate standards <br /> carried through the entire analytical process Used -c monitor {aboratory background and reagent contamznat on <br /> kot Detected (ND) Not detec-ed at or a__ a E:;-sting Eim3t <br /> Relative Percenr Difterence (RPD) An indication of method precision based on duplicate analysis <br /> Reporting Limit (RL) The lowest concentration routinely determined during laboratory operations The RL is <br /> generally 1 to 10 times the Method Detection Limit (MDL) Reporting limits are matrix, method, and analyte <br /> dependent and take into account any dilutions performed as part of the analysis <br /> Surrogates Organic comnounric uhtrh ara s+T gar to analytes or inreresr in cnemical behavior, but are not found <br /> in environmental samples Surrogates are added to all blanks, calibration and check standards, samples, and <br /> Spiked samples Surrogate recovery is monitored as an indication of acceptable sample preparation and <br /> Instrumental performance <br /> . D Surrogates diluted out <br /> # Indicates result outside of established laboratory CC limits <br />