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ENVIRONMENTAL Analytical Chemists January 30, 1997 INORGANIC Quality Assurance Report for sample: 730422 Luhdorff & Scaimanin, Consulting Enginee 500 First Street Woodland CA 95695 BATCH BLANK QA/QC CALIBRATION QA/QC METHOD QA/QC Constituent ID Method Units DLR Result NOTE Type Conc. % REC AR NOTE Type Conc. % REC % REC AR % DIF MAV NOTE Calcium OD 2A 200.7 mg/L 1.0 NO CCV 20.0 101 90-110 MS 20.0 103 100 75-125 1.5 20.0 Magnesium OD 2A 200.7 mg/L 1.0 ND CCV 20.0 106 90-110 Ms 20.0 107 103 75-125 1.9 20.0 Potassium OD 2A 200.7 mg/L 1.0 ND CCV 20.0 97.4 90-110 M5 20.0 110 109 75-125 0.4 20.0 Sodium OD 2A 200.7 mg/L 1.0 ND CCV 20.0 98.7 90-110 MS 20.0 240 326 75-125 5:3 20.0 405 Boron OD 2A 200.7 mg/L 0.10 ND CCV 0.500 1OZ 90-110 M5 0.500 96.6 77.0 75-125 1.5 20.0 Copper OD 2A 200.7 ug/L 50 ND CCV 500 99.8 90-110 MS 500 99.1 97.5 75-125 1.3 20.0 Iron OD 2A 200.7 ug/L 50 ND CCV 500 99.4 90-110 MS 500 89.5 98.3 75-125 8.0 20.0 Manganese 00 2A 200,7 ug/L 30 ND CCV 500 101 90-110 M5 500 98.8 99.4 75-125 0.5 20,0 Zinc 00 2A 200.7 ug/L 50 ND CCV 500 102 90-110 MS 500 105 103 75-125 1.9 20.0 FGL ID = 19970122 ND => Not Detected at ar above DLR. DLR => Detection Limit for Reporting purposes. N/A => Not Applicable NOTE => See note indicated below. Notes: 405 Matrix Spike (MS) not within the Acceptance Range (AR) and/or Relative Percent Difference (RPD) not within the Maximum Allowable Value (MAV) because of low concentrations of the spike or sample. Batch qualified based on the LCS, CCV or ICV recovery. FGLENVIRO ENTA INC CJ:jgc Charles Jo son, B.S. , QA/QC Officer Corporate Offices&Laboratory Office&Laboratory Field Office P.O.Box 2721853 Corporation Street 2500 Stagecoach Road Visalia,California Santa Paula,CA 93061-0272 Stockton,CA 95215 TEL:(209)734-9473 TEL:(805)659-0910 TEL:(209)942-0181 Mobile:(209)737-2399