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1819 <br />Striker Avenue, Suite 8 <br />ID(91U <br />®1a <br />Sacramento, CA 95834 <br />Sequoia Analytical <br />Analytical <br />6) 921-9600 <br />FAX (916) 921 -0 100 <br />'Date <br />Conventional Chemistry Parameters by APHA/EPA Methods/Quality Control <br />Sequoia Analytical <br />- Petaluma <br />'Date <br />RPD <br />Spike Sample <br />QC <br />Reporting Limit Recov. RPD <br />Analyte <br />Analyzed Level Result <br />Result <br />Units Recov. Limits % Limit <br />% Notes* <br />Batch: 0011221 <br />Date Prepared: 1/28/00 <br />Extraction Method: General Preparation <br />Blank <br />0011221-BLKI <br />Cyanide (total) <br />1/28/00 <br />ND <br />mg/l 0.0100 <br />U <br />'LCS <br />0011221 -BSI <br />Cyanide (total) <br />1/28/00 0.200 <br />0.186 <br />mg/1 80.0-120 93.0 <br />Matrix Spike <br />0011221-MS1 P001573-01 <br />Cyanide (total) <br />1/28/00 0.200 0.00239 <br />0.189 <br />mg/1 75.0-125 93.3 <br />Matrix Spike Dup <br />0011221-MSD1 P001573-01 <br />Cyanide (total) <br />1/28/00 0.200 0.00239 <br />0.178 <br />mg/1 75.0-125 87.8 20.0 <br />6.07 <br />Batch: 0011249 <br />Date Prepared: 1/28/00 <br />Extraction Method: General Preparation <br />Blank <br />0011249-BLK1 <br />Sulfide <br />1/28/00 <br />ND <br />mg/l 0.500 <br />U <br />LCS <br />0011249 -BS 1 <br />Sulfide <br />1/28/00 1.58 <br />1.58 <br />mg/1 80.0-120 100 <br />LCS Dup <br />0011249-BSD1 <br />' <br />Sulfide <br />1/28/00 1.58 <br />1.54 <br />mg/l 80.0-120 97.5 20.0 <br />2.53 <br />' <br />Sequoia Analytical - Sacramento <br />*Refer to end of report for text of notes and definitions. <br />' <br />Page 15 of 16 <br />