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Paragon Analytics <br />INORGANICS CASE NARRATIVE <br />CEMEX, Inc. <br />A and C Pit <br />Order Number - 0607003 <br />1. This report consists oft liquid samples. <br />2. The samples were received cool and intact on 07/01/06. The temperature of the <br />samples upon receipt was 8.0° Celsius. <br />3. The samples were prepared for analysis based on Methods for the Chemical <br />Analysis of Waters and Wastes (MCAWW), May 1994 procedures. <br />4. The samples were analyzed following MCAWW procedures for the following <br />methods: <br />Anal e Method SOP # <br />pH 150.1 112b Rev 15 <br />Specific conductance 120.1 1128 Rev 8 <br />5. All standards and solutions were used within their recommended shelf life. <br />6. The samples were prepared and analyzed within the established hold time for each <br />analysis. <br />All in house quality control procedures were followed, as described below. <br />7. General quality control procedures. <br />All initial and continuing calibration verifications (ICV(CCV) associated with <br />each analytical batch were within the acceptance criteria for the requested <br />analyzes. This indicates a valid calibration and stable instrument conditions. <br />8. Matrix specific quality control procedures. <br />Sample 0607003-3 was designated as the quality control sample for each analysis. <br />Similazity of matrix and therefore relevance of the QC results should not be <br />automatically inferred for any sample other than the native sample selected for <br />QC. <br />^ A sample duplicate was prepared and analyzed with each batch. All guidance <br />criteria for precision were met. <br />