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Entech Analytical Labs,Inc 523 Del Rev avenue, Suite E <br /> . Sunnyvale. CA 94036 <br /> QUALITY CONTROL RESULTS SUNLN ARY <br /> Volatile Organic Compounds <br /> Laboratory Control Sample <br /> QC Batch= SMS000320 Date anal%zed 03/21!00 <br /> Matnr Solid Spiked Sarnole Blank Spike <br /> Units uE kg <br /> I <br /> P ARAMETER Method 4 SA SR SP SP SPD SPD RPD QC LIMITS <br /> ug/kg uzyko ug,ka %R ucrlka o/°R 1ZPD <br /> 11 1-Dtchloroethene I 8240/8260 1 -250 1 ND 1 23 8 1 95 I 259 1 104 1 8 5 1 25 1 65-135 <br /> , <br /> ;Benzene 8240/8260 25 0 ND 23 3 1, 113 299 1120 5 5 25 65-135 <br /> ITrichloroethene 82.1013260 25 0 ND 23 3 1 93 255 102 1 90 35 1 65-135 <br /> Toluene 1 8240/3260 1 25 0 ND -165 1 106 283 1 113 66 1 25 1 65-135 <br /> IChlorobenzene 1 8240/8260 1 25 0 1 ND 1 254 I 102 1 26 1 1 104 1 2 7 1 25 1 65-135 <br /> , <br /> 'Surrogates <br /> 1 , <br /> :Toluene-a3 3240/8260 I 1 105°. 1 103°0 , I 1059/0 ; : I 65-135 <br /> IDtbromoftuoromethane 1 8240/3260 10200 11800 1091)1'0 i 65-135 <br /> 1 1 3240/3260 1 i 102% 1 112% I I 109% 1 1 1 F <br /> ,4-Bromofluorobenzene � 65-135 <br /> 11,2-Dtchloroethane-d4 1 8240/8260 1 1070,. F 13900 1 1 1279% I 1 1 I <br /> b5-135 <br /> a <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA Spike Added <br /> ► SR Sample Result <br /> RPD(%) Duplicate Analysis -Relative Percent Difference <br /> SP Spike Result <br /> SP (%R) Snike%Recovery <br /> SPD Spike Duplicate Result <br /> SPD (°%R) Spike Duplicate%Recovery <br /> NC Not Calculated <br />