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0 <br />0 <br />0© <br />Client Project ID: <br />Lab Order: 08-4900 CASE NARRATIVE <br />this analyte is within limits and the laboratory control spike (LCS) recoveries are within QC limits, <br />showing the analysis is in control. There are no other anomalies to report. WIC M <br />RADIOCHEMISTRY <br />These tests are not yet complete ; results will be reported as soon as they are received from Hazen <br />Research. CMS <br />Results were reported on 8/14/08. CMS <br />ADDENDUM 8122108 <br />As requested, Anion/ Cation Balances were calculated for all samples. <br />The balances on 08-4900-01 and 08-4900-04 showed poor closures due to elevated results on the <br />alkalinity tests. Those elevated levels were caused by doing that test on "as received" samples rather <br />than on filtered samples. The high suspended solids in those samples were partially dissolved as the pH <br />became more acidic during the alkalinity titration, consuming acid and. giving high results. <br />The alkalinity results are estimated to be 2 X higher than if the analyses were done on filtered samples. <br />This was estimated by comparing the measured TDS and the calculated TDS (sum of the anions and <br />cations). Correcting for this extra alkalinity, the Ion Balance closures would be 4.58 % difference (08- <br />4900-01) and 3.00 % difference (084900-04). <br />The Ion Balances on the other samples were acceptable, and the measured and calculated TDS values <br />agreed well for those samples. <br />6,6?L " <br />Carl Smits, Technical Director, Evergreen Analytical, Inc <br />Print Date: 8/222108