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1 <br /> i <br /> January 21, 2005 Lab ID STK438872 <br /> Ground Zero Analysis 1 Customer 3-14996 <br /> Quality Control - Organic <br /> 1 Constituent Method Date/ID Type Units Conc QC Data DQO Note <br /> 2 Chlorotoluene 5242 12/30/2004 A209 BS ug/L 1000 927% 64-131 <br /> 1 BSD ug/L 1000 92 a% 64-131 <br /> BSRPD ug/L 106% X21 6 <br /> 5242 12/30/2004 A 00-CCv ug/L 1000 103% 70-130 <br /> 1 4-Chlorotoluene 5242 12/30/2004 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 83 5% 67-129 <br /> BSD ug/L 1000 949% 67-129 <br /> BSRPD ug/ 127% X20 2 <br /> 1 5242 12/30/2004 A 00-CCv ug/L 1000 103% 70-130 <br /> Di-tsopropvl ether (DIPE) 5242 12/30/2004 A209 Blank ug/L ND <3 <br /> 1 BS ug/L 1000 55 6% 54-152 <br /> BSD ug/L 1000 70 1% 54-152 <br /> BSRPD ug/L 1 5 s3 00 <br /> 524 2 12/30/2004 A 00-CCv ug/L 1000 71 0% 70-130 <br /> 1 Dtbromochloromethane 5242 12/30/2004 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 97 0% 70-128 <br /> BSD ug/L 1000 121% 70-128 <br /> BSRPD ug/L 224% 522 8 <br /> 5242 12/30/2004 A 00-CCv ug/L 1000 109` 70-130 <br /> Dibromomethane 5242 12/30/2004 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 88 5% 70-134 <br /> BSD ug/L 1000 122% 70-134 <br /> BSRPD ug/L 318% 5261 410 <br /> 1 <br /> 5242 12/30/2004 A 00-CCv ug/L 1000 96 7% 70 130 <br /> 1 2 Dichlorobenzene 5242 12/30/2004 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 86 9% 67-133 <br /> 1 BSD ug/L 1000 98 9% 67-133 <br /> BSRPD ug/L 129% 519 8 <br /> 5242 12/30/2004 A 00 CCv ug/L 1000 104% 70 130 <br /> 1 1 3-Dichlorobenzene 5242 12/30/2004 A209 Blank ug/L ND --05 <br /> BS ug/L 1000 893% 68-125 <br /> BSD ug/L 1000 98 8% 68-125 <br /> BSRPD ug/L to 1% 519 0 <br /> 1 5242 12/30/2004 A 00-CCv ug/L 10 00 109% 70-130 <br /> l 4 Dichlorobenzene 5242 12/30/2004 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 90 1% 65-132 <br />' BSD ug/L 1000 105% 65-132 <br /> BSRPD uglL 15 5% 520 2 <br /> 5242 12/30/2004 A 00 CCv ug/L 1000 107% 70-130 <br /> 1 2 Dichlnraba neem d4 Surrogate 524 2 12/30/2004 A209 Blank ug/L 1000 72 9% 70-130 <br /> Report fontmued on next page <br /> 1 STK438872 Quality Control Page 3 <br />