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- j?ie w7 Etii iroiiniental Nenvoi k <br /> J <br /> PAGE 7 <br /> 1 <br /> i <br /> ' AEN (CALIFORNIA) <br /> QUALITY CONTROL REPORT <br /> ' AEN JOB NUMBER 9509322 <br /> CLIENT PROJECT ID D-101 CONRADY <br /> Quality Control Summary <br /> ' All laboratory quality control parameters were found to be within established <br /> limits <br /> i <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 results , <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 QC data are advisory <br /> Method Blank An analytical control consisting of all reagents, internal standards, andlsurrogate standards <br /> I ' carried through the entire analytical process Used to monitor laboratory background and reagent contamination. <br /> ' Not Detected (ND) Not detected at or above the reporting Limit. <br /> Relative Percent Difference (RPD): An indication of method precision based on duplicate analysis <br /> I I I <br /> Reporting Limit (RL): The Lowest concentration routinely determined during laboratory operations. The RL is <br /> ' generaU y'1 +to'11Q times the Method Detection Limitl(MDL) Reporting Limits are matrix, method, and analyte I <br /> I + <br /> I dependent and take`,intolaccount any dilutions Iier'formed,as part)ofI the analysis., tl II I <br /> ' I ' I I it I i , I I <br /> IIl <br /> Surrogates*, 0rganicicoinpounds witch are similar to analyteslof interest in chemicallbehavior„but are not found I I <br /> in environmental' samples IIISurrIogates are added to all blanks, c`alib�ation and check standards, samples, and <br /> spiked IIsamplles ,(Surrogate recovery is (monitored' as an' indication' Iof acceptable sample preparation and <br />'j instrumental'performance <br /> I <br /> D• Surrogates diluted out. <br /> I` ' Indicates <br /> ILII E # I'I +Indicates result outside of established laboratory QC limits <br /> 1 II I I 1I EIIII,Iy,I '' l i 1I'I E I I i i + � 1, I <br /> ISI <br /> I V I�E�I I 4 U I I+I, iI II t ,6h1 <br /> I it Ill'I I 'I iI iI II I I '�I I ill Il�I If l �r IIVi� ''�'I Ir I'I II II iI�I II l I� IiI 7V !t �IIi I I (III f�hll�Il' I'�kl i 1'IIE�'111 IiI�I+I AI ,Ili <br />