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Anti :aft Ei7vironnrental Nenvw k <br /> RECT.-I" nrT - '9r, <br /> PAGE 17 <br /> ' AEN (CALIFORNIA) <br /> QUALITY CONTROL REPORT <br /> ' AEN JOB NUMBER 9509293 <br /> I' CLIENT PROJECT ID - <br /> Quality Control and Project Summar <br /> All laboratory quality control parameters were found to be within established <br /> ' limits <br /> I <br /> Definitions 1 ' <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 Icompounds and <br /> sub,ected to the entire analytical procedure Matrix spike and matrix spike duplicate OC data are advisory. <br /> ' I 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 /> ' Not Detected (ND)- Not detected at or above the reporting limit <br /> Relative Percent Difference (RPD): An indication of method precision based on dupLicate analysts <br /> Reporting Limit NO: The Lowest concentration routinely determined during laboratory operations The RL is I IL <br /> generally 11,to 10 times the Method Detection Limit CMDL). Reporting limits are matrix, method, and analyte I i <br /> dependent and take�,,tnto accountanydilutions perfofrml as part of the analysts I� <br /> Surrogates: Organic compounds which arelsimil'ar to analytes of interest,in chemical:behavior, but are not found <br /> to environmental sampLes.ilESurrogateslare added to aLL blanks„ calibration'and check standards,, samplt3s,1and' I' <br /> F ' spiked samples. SurrogatesIreeovery Its monitoredl as en indication of, accfeptable1satplel prepar`lation and <br /> I instrumental performance: 'I I! 1 r E I ! `II I I I III i ' 41 i II 1 I 1 ' <br /> 1 ( I Ilf 11 I i I 1 I f 1 <br /> I f <br /> D SUrr or 'dl Luted outI ,f 1 1 ��� LI Il� !'il�� �11'I�I Ilil !I �I I I' � 'i� li �f llililll�i�1 % <br /> III gateS k,l '!,�'1 1 I�I I i I l ,EI�1 I I I Indicates result outside of estabLishedI laboratory OC Limits I <br /> I� <br /> I II II <br /> 'i I k[k''I II1I <br /> I i I li}Ilr� 1 Il llrl� ��IEt,I �I�II �� Elif I II L'I G,�I' ILII II 4'i i�Ill a �} Ill I� ^ I I Itltlli�} Ilxr II�I� <br />