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September 12, 2003 Lab ID STK335002 <br /> Sierra Organics Co. Customer : 3-14810 <br /> Quality Control - Inorganic <br /> [::Constituent Method Date/ Type Units Cone. QC Data DQO :N:ote <br /> Metals <br /> Lead 6010B 08/27/2003:A 02-CCB mg/L ND <0.01 <br /> 02-CCV mg/L 1.000 108% 90-110 <br /> 03-CCB mg/L ND <0.01 <br /> 03-CCV mg/L 1.000 109% 90-110 <br /> Mercury 7471A 09/05/2003:A212 Blank mg/kg ND <0.03 <br /> LCS mg/kg 0.2778 107% 85-115 <br /> MS mg/kg 0.2778 92.5% 75-125 <br /> (SP 309144-01) MSD mg/kg 0.2778 91.3% 75-125 <br /> MSRPD mg/kg 1.2% S 20 <br /> 7471A 09/05/2003:A 01-CCB ug/L ND <0.1 <br /> 01-CCV ug/L 4.167 98.6% 90-110 <br /> 02-CCB ug/L ND <0.1 <br /> 02-CCV ug/L 4.167 104% 90-110 <br /> Nickel 3050B 08/20/2003:B209 Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 103% 85-115 <br /> PDS mg/kg 40.00 89.4% 75-125 <br /> MS mg/kg 40.00 95.1% 75-125 <br /> (SP 308716-03) MSD mg/kg 40.00 94.3% 75.125 <br /> MSRPD mg/kg 0.7% -s20 <br /> 6010B 08/27/2003:A 02-CCB mg/L ND <0.01 <br /> 02-CCV mg/L 1.000 101% 90-110 <br /> 03-CCB mg/L ND <0.01 <br /> 03-CCV mg/L 1.000 104% 90-110 <br /> Selenium 30" 08/20/2003:B209 Blank mg/kg ND <0.5 <br /> LCS mg/kg 40.00 104% 85-115 <br /> PDS mg/kg 40.00 97.2% 75-125 <br /> MS mg/kg 40.00 95.6% 75-125 <br /> (SP 308716-03) MSD mg/kg 40.00 93,7% 75-125 <br /> MSRPD mg/kg 119% :520 <br /> 6010B 09/04/2003:C 01-CCB mgt ND <0.01 <br /> 01-CCV mg/L 1.000 102% 90-110 <br /> 02-CCB mg/L ND <0.01 <br /> 02-CCV mg/L 1.000 102% 90-110 <br /> Zinc 3050B 1 08/20/2003:B209 Blank mg/kg ND <1 <br /> LCS mg/kg 40.00 114% 85-115 <br /> PDS mg/kg 40.00 98.2% 75-125 <br /> MS mg/kg 40.00 914% 75-125 <br /> (SP 308716-03) MSD mg/kg 40.00 106% 75-125 <br /> MSRPD mg/kg 3.6% <20 <br /> 6010B 08/27/2003:A 02-CCB m L ND <0.02 <br /> 02-CCV mg/L 1.000 110%, 90-110 <br /> 03-CCB mg/L ND <0.02 <br /> 03-CCV mg/L 1.000 109% 90-110 <br /> Explanations and definitions are continued on next page... <br /> STK335002: Quality Control Page 2 <br />