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March 30, 20Q5 Lab ID STK53I969 <br />' Ground Zero Analysis Customer 3-14996 <br /> Quality Control - Organic <br /> F' Constituent Method Date/ID Type Units Cone QC Data DQO Note <br /> I 1 2 Dichlorobenzene d4-Surrogate 524 2 03/23/2005 A209 BS ug/L 1000 129`,0 70-I30 <br /> BSD ug/L 1000 112% 70-130 <br /> 5242 03/23/2005 A 00-CCV ug/L 1090 119% 70-130 <br />' Dichlorodifluoromethane 5242 03/23/2005 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 56 610 47-143 <br /> BSD ug/L 1000 514% 47-[43 <br /> BSRPD ug/L 9 60,0 533 5 <br />' 5242 03/23/2005 A 00-CCV ug/L 1000 793% 70-130 <br /> 1,1-Dlchloraedlane 5242 03/23/2005 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 77 6% 48-170 <br />' BSD ug1L 10 00 730% 48-170 <br /> BSRPD ug/L 61% 521 2 <br /> 5242 03/23/2005 A 00 CCV uglL 1000 74 70 70-130 <br />' 1 2-Dichloroethane 5242 03/23/2005 A209 Blank ug/L ND <0 a <br /> BS u,-/L 1000 126 '0 60-160 <br /> BSD ug/L 1000 105% 60-160 <br />'• BSRPD ug/L 18 0% 524 2 <br /> 5242 03/23/2005 A 00-CCV ug/L 1000 110% 70-130 <br /> 1,1-Dichloroethylene 5242 03/23/2005 A209 Blank ug/L ND <05 <br /> BS ug/L 10 00 847% 41-183 <br /> BSD ug/L 1000 824% 41-183 <br /> BSRPD ug/L 2 8% 519 3 <br />' <br /> 5242 03/23/2005 A 00-CCV ug/l, 10 00 83 6% 70-130 <br /> cis-I 2-Dichloroethvlene 5242 03/23/2005 A209 Blank ug/L ND <0 5 <br /> BS ug/L 10 00 87 7% 55-156 <br /> BSD ug/L 10 00 83 1;0 55-156 <br /> BSRPD ug/L 547a 526 8 <br /> 5242 03/23/2005 A 00-CCV ug/L 10 00 845% 70-130 <br /> trans-1,2-Dichloroethylene 5242 03/23/2005 A209 Blank ug/L NO <0 5 <br /> BS ug/L 10 00 827% 42-177 <br /> BSD ug/L 10 00 800% 42-177 <br /> BSRPD ug/L 3 4575 520 4 <br />' 5242 03/23/2005 A00 CCV ug/L 10 00 80 1% 70-130 <br /> Dichloromethane 5242 03/23/2005 A209 Blank ug/L NO <0 5 <br /> BS ug/L 1000 111% 62-161 <br />' BSD ug/L 1000 944% 62 161 <br /> BSRPD ug/L 1601. :519 3 <br /> 5242 03/23/2005 A 00-CCV ug/L 1000 100% 70-130 <br />' 1 2-Dichloropro pane 5242 03/23/2005 A209 Blank ug/L ND <05 <br /> Report continued on next page <br /> STK531969 QiJalitY Control Paye 4 <br />