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Alii CQii Eiii L Oiii7zei7tal Nettt,oi k <br /> PAGE 7 <br /> 1 <br /> 1 <br /> ' AEN (CALIFORNIA) <br /> QUALITY CONTROL REPORT <br /> AEN JOB NUMBER 9507006 <br /> CLIENT PROJECT ID CONRADY <br /> Quality Control and Project Summary. <br /> ' All laboratory quality control parameters were found to be within established <br /> limits <br /> Definitions <br /> 1 Laboratory Control Sample (LCB)/Method Spike(s) Control samples of known composition. LC5 and Method Spike <br /> data are used to validate batch analytical results. <br /> ' I 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 OC 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 to monitor laboratory background and reagent contamination <br /> 1 I <br /> Not Detected (ND) Not detected at or above the reporting limit <br /> 1 r ! I <br /> Relative Percent Difference (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 /> � <br /> Surrogates [OrgaI pounds whichnic compounds similar to analytes of interest in chemical behavior, but are not found <br /> in environmentalle <br /> rsamps' surrogates are added to all. blanks, calibration end check standards, samples, and <br /> spiked Isamptei 1' Is urrogate recovery is monitored as an indication of (acceptable sample preparation and' <br /> instrumantai 'performance <br /> t <br /> I!'Il 11 e <br /> D- Su rrogates(dilutedlout ' t i 11 I <br /> #- indicates result outside of established laboratory OC, Limits'. I I I I If Ili o € I <br /> I ulll�l <br /> I I ! <br /> 1 I ! I r I <br /> I I I I I <br /> k1' I r� <br /> `EE <br /> r r �V I i SRI r� I t r i V � I I I II iI ply � II rl Ir V I I tl i I � V u +SII i � v <br /> i�I <br />