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07/15/05 FRI 17:13 FAX Q008 <br /> July 15, 2005 Lab ID STK534793 it <br /> St. Michaelis Preschool Customer : 3-13411 <br /> Quality Control - Organic <br /> Constituent Method Date/10 Type Units Conc. QC Data DQO Note <br /> t DBCP 504.1 07/02/2005:A203 Blank ug/L ND c0.01 <br /> LCS ug1L 0.2949 98.5% 70.130 <br /> BS ug/L 0.2949 1 102% 70-130 <br /> BSD ug/L 0.2949 0.D% 70-130 435 <br /> F( BSRPD ug/L 0.30 50.0100 <br /> 504.1 07106/2005:G F0:33 <br /> CV uglL 5.012 103% 70-130 <br /> CV ug/L 5.012 105% 70-130 <br /> F1t3•hihromoprupanc Surrogate 504.1', 0710212005:A203 k ug/L 0.5868 89.9% 70-130 <br /> ug/L 0.5868 87.076 70-130 <br /> uSIL 05868 66.5% 70-130 <br /> BSD ug/L 0.5968 1.5% 70-130 560 <br /> 504.1 07/06/2005:0 02-CCV ug/L 9.975 87.7% 70-130 <br /> 03-CCV ug/L 9.975 99.2%, 70.130 <br /> B74planatiof7s <br /> 435 Sample matrix may be affecting this analyre• Data was accepted based on the LCS or CCY recovery. <br /> 560 Surrogate percent recoveries not within the Accepranae Range (AP) due to suspcated matrix interferences. <br /> ![ <br /> "} Dnitiotts <br /> 131 13Jank : Method $fenlc - Prepared m verify that the prcparalion pmccss is not contributing contamination to the samples. <br /> LCS Laboratory Control Standard(Sample - Prepared to verify that the preparation process is not affecting aaalyu <br /> recovery. <br /> M5/MSD Matrix Spikes - A random sample is spiked with a known amount of aoaly[e. The recoveries are an indication a <br /> how 03at sampic matrix affects analyte recovery. <br /> Fit BS/BSD ; Blank Spikes - A blank is spiked with a known amount of analyte. It is prcparnd to verify that the preparation <br /> procosS is not affecting analyte recovery. <br /> CCB Continuing Calibration Blank - Analyzed to verify the instrumcnr baseline is within criteria. <br /> CCV ; Continuing Calibration Verification - Analyzed to verify the instrument calibration i% within criteria. <br /> ND Non-detect - Result was below the DQO listed for the analyte. <br /> DQO Data Quality Objective - This is the criteria against which the quality control data is compared. <br /> R <br /> F_: <br /> FSTIC534793: Quality Control Page 2 <br /> �` 07/15/2005 FRI 17:07 [TX/RX NU 67021 Q008 <br />