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• April 01, 2004 Lab 1D STK431881 <br /> Ground Zero Analysis Customer 3-14996 <br /> Quality Control - Organic <br /> Constituent Method Date/ID Type Units Conc QC Data DQO Note <br /> 12 Dichlorabenzene-d4 Surrogate 5242 03/23/2004 A209 BS ug/L 1000 98 1% 70-130 <br /> BSD ug/L 1000 955% 70-130 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 104% 70-130 <br /> Dichlorodifluoromethane 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 71 8% 32-250 <br /> BSD ug/L 1000 52 4% 32-250 <br /> BSRPD ug/L 313% 516 4 410 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 97 6% 70-130 <br /> 1,1-Dtchloroethane 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS u.-/L 1000 117% 75-I42 <br /> BSD ug/L 1000 1I5% 75-142 <br /> BSRPD ug/L 1 1% 518 7 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 122% 70-130 <br /> 1,2 Dtchloroethane 5242 03/23/2004 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 108% 73-153 <br /> BSD ug/L 1000 110% 73-153 <br /> BSRPD ug/L 20% 523 6 <br /> 5242 03/23/2004 A 00-ccv u,-/L 1000 128% 70-130 <br /> 1 I-Dtchloroethylene 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS I u R/L 1000 102% 56-163 <br /> BSD ug/L 1000 94 8% 56-163 <br /> BSRPD ug/L 75% 524 0 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 106% 70-130 <br /> cts-1,2-Dtchloroethylene 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 85 1% 76-148 <br /> BSD ug/L 1000 877% 76-148 <br /> BSRPD ug/L 28% 530 2 <br /> 5242 03/23/2004 A a0-ccv ug/L 1000 979% 70-130 <br /> trans-1,2-Dtchloroethylene 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 99 1% 82-133 <br /> BSD ug/L 1000 96 1% 82-133 <br /> BSRPD ug/L 3 1% s23 3 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 103% 70-I30 <br /> Dichloromethane 5242 03/23/2004 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 102% 77-144 <br /> BSD u.-/L 1000 101% 77-144 <br /> BSRPD ug/L 07% 521 3 <br /> 5242 03/23/2004 A 00-ccv ug/L 1000 115% 70-130 <br /> 1 2 Dtchloropropane 5242 03/23/2004 A209 Blank uglL ND <0 5 <br /> • Report continued on nett page <br /> STK431881 Quality Control Page 4 <br />