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ia/39J22102 19:53 209862065 i3ESCAL PAGE 26 <br /> July 15, 2002 Lab ID : STIL33297 <br /> Bescal Inc. Customer : 3-14704 <br /> Quality Control - Organic <br /> Constituent Rfetbod Date/ID j Type Units Conc. QC Daae l DQO Note <br /> 1,:,4 Tnmcthylberuene 524.2 OW01 2002:A209 Bs ug/L 1U.0U 103' 90-Idl ` <br /> B57 ug/L 10,00 110% 9t-lul <br /> j BSRPD ug/L 4.5% I s 30.0 <br /> +24.2 07'01RDJ2 A ;00-CCV ug/L 10.00 ?8.otf '0-13U <br /> i ! <br /> 1,3,5-Trimethylbtnzene i $24.2 07/Ul/200::A209 Blark ug/L ND 4 6,5 <br /> 3S ug/L 10.00 !07;r 39-157 <br /> ! BSD ug/L lo.0.1 109 A 89-157 <br /> BSRPD ug/L 2.05. s 16.2 <br /> 524.2 07/01:21X1':A 00-CCV ug/L li).00 102k 111-130 <br /> Vinyl Chloride 525.2 07roi12002%Jk209 Blank ug/L ND Z0.5 <br /> BS ub/L lU 0 128% 77.171 <br /> BSD ug/L 10.00 122% 77-171 <br /> BSRPD ug/L 4.8% 513.6 <br /> $24.2 07/Cl/20(P-:A 00-CCV ugiL 10.U0 117% 70-130 <br /> Xylenes m,p 524.2 1)7:0U2002.A209 Blank ug/L ND X0.5 <br /> BS ugiL 2Q.tn) n.u% 82-J45 <br /> BSD ug.'L 20,00 97.2's 72-145 <br /> BSRPD ug/L 4.7( 518.0 <br /> 521.2 07;01l2002:A 00-CCV ug1L 20.00 8745;, 10.130 <br /> F,xplanatioas <br /> 360 CCV shove Az—aptance Range (AR). Samples whi.h were non detect for this analyte were accepted' <br /> 410 Relative Percent Difference wD) not within Maximum Allowable Value (MAN". Data was accepted <br /> based on the LCS or CCN' recovery. <br /> 435 Sample matri-, ii%, be affe%tnng this artalyte. Data was accepitd based on its LCS or CCV recovery. <br /> �i 560 Surrogate pereenl recrveries not w!thin tree Acceptance Range (A3) due to suspected matrix interferences. <br /> Definitions <br /> Blank Method Blank - Prepared to verify that the preparation, process is not contributing eontarnir,at!pn to else samples. <br /> LCS Laboratory Control Standard/Samrle - Prepared to verifv that the preparation pnxess is not affecting analyte <br /> recovery. <br /> MSIMSD Matrix Spines - A random satnpte is spiked with a known amount of artalytt. The recoverio are an indicatioll 0 <br /> how that sample matrix affects analvte recovery, <br /> r35%ASD Blank Spikes - A blank is spiked with a krwwt; amount of analyte. it is prcparcJ to 'verify that the preparation <br /> process is not affecting Analyte reccive-y. <br /> Dup Duplicate Sample - A random sample with ca_h batch is prepared and analyzed in doplic%t(e. The reiativc per_-ent <br /> difference is an indi_ation of precUion f,)r the reparatioA and anal 4is. <br /> lCe Initial Caiibration Blank - Ana!yaed to verify the instrument baseline is within m(cria. <br /> ICV initial Calibration VeriGcabon Analyzed to verify the instrument calibratr.rn is within criteria. <br /> CCB Continuing Calibration Blanc Analyzed to veri`y the instrument baseline is within criteria. <br /> CCV Continuing Calibration Verifl:atlon - Analyzed to verify the instrument calibrnion is within criteria. <br /> ND Nondetect - Result was bduw the DQO Ilsted for the analyte, <br /> ¢14 : High Sample Background - Spike urnenu•ation was less ltun one forth of One sample cunccntratlon. <br /> DQO Dam Quality Objectiv_ - Thi; is the crarria against which the quality corrirol data i5 compared. <br /> STK233297: Quality Control Page 15 <br />