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? AG?1J' ..... <br />Labor- a or es <br />CASE NARRATWE / CONFORMANCE SUMMARY <br />Client: Contour Consulting Engineering Job NO D18515 <br />Site: GCC Report Dat 11/ 11/201010:07:06A <br />On 10/27/2010, five (5) samples, 0 Trip Blanks, and 0 Field Blanks were received at Accutest Mountain States (AMS) at a temperature <br />of 5.2°C. The samples were intact and properly preserved, unless noted below. An AMS Job Number of D18515 was assigned to <br />the project. The lab sample IDs, client sample IDs, and dates of sample collection are detailed in the report's Results Summary. <br />Specified quality control criteria were achieved for this job except as noted below. For more information, please refer to the analytical <br />results and QC summary pages. <br />Metals By Method EPA 200.7 <br />Matrix AQ Batch ID: MP3272 <br />All samples were digested and analyzed within the recommended method holding time. <br />' The method blank for this batch meets method specific criteria. <br />¦ Samples D18522-1MSD, D18522-IMS, and D18522-1MSD were used as the QC samples for the metals analysis. <br />The matrix spike (MS) recoveries of Boron and Sodium are outside control limits. The spice amounts are low relative to the <br />sample amounts. Refer to the lab control or spike blank for recovery information. <br />Matrix AQ Batch ID: MP3275 <br />All samples were digested and analyzed within the recommended method holding time. <br />a The method blank for this batch meets method specific criteria. <br />Samples D18515-2FMS and D18515-2FMSD were used as the QC samples for the metals analysis. <br />' Metals By Method EPA 200.8 <br />Matrix AQ Batch ID: MP3290 <br />All samples were digested and analyzed within the recommended method holding time. <br />' The method blank for this batch meets method specific criteria. <br />¦ Samples D18497-IMS and D18497-1MSD were used as the QC samples for the metals analysis. <br />' ¦ The matrix spike (MS) recovery of Selenium is outside control limits. The spike amount is low relative to the sample amount. <br />Refer to the lab control or spike blank for recovery information. <br />¦ MP3290-MB1 for Cadmium: All sample results < RL or >10x method blank concentration. <br />I Matrix AQ Batch ID: MP3296 <br />¦ All samples were digested and analyzed within the recommended method holding time. <br />¦ The method blank for this batch meets method specific criteria. <br />' ¦ Samples D18626-11MS and D18626-11MSD were used as the QC samples for the metals analysis. <br />Metals By Method EPA 245.1 <br />' Matrix AQ Batch ID: MP3293 <br />All samples were digested and analyzed within the recommended method holding time. <br />¦ The method blank for this batch meets method specific criteria. <br />Samples D18504-IMS and D18504-1MSD were used as the QC samples for the Mercury analysis. <br />Thursday, November 11, 2010 <br />Page 1 of3 <br />Elm 5 of 64 <br />ACCUTE8T. <br />D18515