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January 02, 2004 Lab XD STK338052 <br /> Ground Zero Analysis Customer 3-14996 <br /> Quality Control - Organic <br /> Constituent Method Date/ED Type Units Conc. QC Data DQO Note <br /> 1,1 1 2 Tetrachloroethane 5242 12/19/2003 A209 BS ug/L 1000 108% 77-138 <br /> BSD ug/L 1000 990% 77-138 <br /> BSRPD ug/L 8 7% 5 15 8 <br /> 524 2 12/19/2003 A 00-CCV ug/L 1000 97 6% 70-130 <br /> l,l 2,2-Tetrachloroethane 5242 I2119/2003 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 116% 79-147 <br /> BSD ug/L 1000 114% 79-147 <br /> BSRPD ug/L 25% 525 9 <br /> 5242 12/19/2003 A 00-CCV ug/L 1000 100% 70-130 <br /> Tetrachloroethylene 5242 12/19/2003 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 111% 71-136 <br /> BSD ug/L 1000 105% 71-136 <br /> BSRPD ug/L 64% 514 7 <br /> 5242 12/19/2003 A 00-CCV ug/L 1000 105% 70-130 <br /> Toluene 5242 12/19/2003 A209 Blank ug/L ND <05 <br /> . BS ug/L 1000 107% 78-126 <br /> BSD ug/L 1000 996% 78-126 <br /> BSRPD ug/L 7 4`75 --5164 <br /> 5242 12/19/2003 A 00 CCV ug/L 1000 102% 70-130 <br /> 1 2 3-Trtchlorobenzene 524 2 12/19/2003 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 116% 74-151 <br /> BSD ug/L 1000 113% 74-151 <br /> BSRPD ug/L 25% 525 4 <br /> 3242 12/19/2003 A 00 ccv ug/L 1000 105% 70-130 <br /> 1,2,4-Trtchlorobenzene 5242 12/19/2003 A209 Blank ug/L ND <05 <br /> BS ug/L 1000 114% 74-152 <br /> BSD ug/L 1000 109% 74-152 <br /> BSRPD ug/L 44% 521 7 <br /> 5242 12119/2003 A 00-CCV ug/L 1000 105% 70-130 <br /> 1,1,1-Trichloroethane 5242 12/19/2003 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 116% 84-144 <br /> BSD ug/L 1000 109% 84-144 <br /> BSRPD ug/L 60% 5 17 8 <br /> 5242 12/19/2003 A 00-CCV ug/L 1000 113% 70-130 <br /> 1 1,2-Trichloroethane 5242 12/19/2003 A209 Blank ug/L ND <0 5 <br /> BS ug/L 1000 113% 80-132 <br /> BSD ug/L 1000 111% 80-132 <br /> BSRPD ug/L 2 1% 5 20 0 <br /> 5242 12/19/2003 A 00-CCV ug/L 1000 102% 70-130 <br /> Trichloroethvlene 524 2 12/19/2003 A209 Blank ug/L ND <05 <br /> Report continued on next page <br /> STK338052 Quality Control Page 7 <br />