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Enthalpy Analytical Narrative Summary <br />Company <br />Job No. <br />Client ID. <br />Enthalpy Analytical, Orange, CA <br />0824-1274 <br />EO-514512 <br />5. QC Notes <br />The HRMS system displayed mass resolving power of at least 10,000 during the analysis. <br />Labeled standard recovery values in the Ongoing Precision Recovery (OPR) and method blank <br />(MB) were acceptable. Native recovery values in the OPR were acceptable. <br />GC Resolution parameters were met for TCDD and TCDF. <br />EPA Method 8290A Solid samples were extracted within 30 days, and extracts analyzed within <br />45 days. <br />6. Reporting Notes <br />The results presented in this report are representative of the samples as provided to the <br />laboratory. <br />Solid results are reported on a dry weight basis. “As Is” results are available upon request. <br />The TEQ was calculated and reported using I-TEF and WHO-2005 TEF, calculated by <br />multiplying the concentration for each 2,3,7,8-substituted PCDD/F by its toxic equivalency factor <br />(TEF). The Totals and Detection Limits have been included in the report. The TEQ is reported <br />with and without EMPCs included. Additionally, the TEQ may be reported with non-detects <br />treated as having a concentration of zero, a concentration of one-half the EDL, and/or a <br />concentration equal to the EDL. <br />These analyses met the requirements of the TNI Standard. Any deviations from the <br />requirements of the reference method or TNI Standard have been stated above. <br />Enthalpy Analytical, LLC in Wilmington NC is accredited by the Louisiana Department of <br />Environmental Quality to the 2009 TNI Standard under certificate number 05075. <br />EU 0824-1274 Page 4 of 20 77 of 95