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June 5, 2018 Lab ID : 5TK1835413 <br />Barajas Tree Farm Customer :3-16297 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/lD Type <br />Units <br />Cone. QC Data <br />DQO <br />Note <br />Metals <br />Zinc <br />3050 <br />04/27/18:204807amb PDS <br />mj& <br />40.00 -10.5% <br />75-125 <br />430 <br />Mercury <br />7471 <br />05104/18:205153AC Blank <br />mg/kg <br />ND <br /><0.03 <br />LCS <br />mg/kg <br />0.2500 97.8% <br />85-115 <br />MS <br />mg/kg <br />0.2500 76.8% <br />75-125 <br />(SP 1805339-001) MSD <br />mg/k& <br />0.2500 98.8% <br />75-125 <br />MSRPD <br />MRAR <br />0.2500 10.8% <br />—<20 <br />Wet Chem <br />% Solids <br />25400 04t26/18:204773jmg Blank % ND <0.1 <br />1 <br />1 11842-001 % 1.00/0 23.9 <br />Definition <br />PDS <br />PDS failed, matrix - Post Digestion Spike (PDS) not within Acceptance Range (AR) because of matrix interferences affecting this <br />analyte. Data was accepted based on the LCS recovery. <br />[CV <br />Initial Calibration Verification - Analyzed to verify the ins calibration is within criteria. <br />ICB, <br />Initial Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />CCV <br />Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />CCB <br />Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank <br />Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />LCS <br />Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br />Ms <br />Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries ate an indication of how that sample <br />matrix affects analyte recovery. <br />MSD <br />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The recoveries <br />are an indication of bow that sample matrix affects analyte recovery. <br />Dup <br />: Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />indication of precision for the preparation and analysis. <br />MSRPD <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />and analysis. <br />ND <br />Non -detect - Result was below the DQO fisted for the analyte. <br /><'14 <br />High Sample Background - Spike concentration was less than one forth of the sample concentration. <br />DQO <br />Data Objective - This is the criteria against which the quality control data is E!2Mp!ad. <br />Explanation <br />'22L1g; <br />360 <br />CCV above Acceptance Range (AK). Samples which were non detect for this analyte were accepted. <br />430 <br />Post Digestion Spike (PDS) not within Acceptance Range (AR) because of matrix interferences affecting this analyte. Data was <br />accepted based on the LCS recovery. <br />435 <br />: Sa le matrix ma be affectin this analyte. Data was acc tedbased on the LCS or CCV =2nM. <br />Page 7 of 7 <br />