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Client: ECOS Environmental&Disaster Restoration,Inc. QC BATCH REPORT <br /> Work Order: 21052477 <br /> Project: 7911 Upper River Rd. <br /> Batch ID: 177827 Instrument ID O&G Method: SW9071B <br /> MBLK Sample ID: MBLK-177827-177827 Units:mg/Kg Analysis Date:6/2/2021 12:45 PM <br /> Client ID: Run ID: O&G_210602B SegNo:7452620 Prep Date: 6/2/2021 DF: 1 <br /> SPK Ref Control RPD Ref RPD <br /> Analyte Result PQL SPK Val Value %REC Limit Value %RPD Limit Qual <br /> Oil and Grease U 180 <br /> LCS Sample ID: LCS-177827-177827 Units:mg/Kg Analysis Date:612/2021 12:45 PM <br /> Client ID: Run ID: O&G 210602E SegNo:7452619 Prep Date: 6/2/2021 DF: 1 <br /> SPK Ref Control RPD Ref RPD <br /> Analyte Result PQL SPK Val Value %REC Limit Value %RPD Limit Qual <br /> Oil and Grease 1616 180 1600 0 101 78-114 0 <br /> MS Sample ID: 21052476-01A MS Units:mg/Kg Analysis Date:6/2/2021 12:45 PM <br /> Client ID: Run ID: O&G_210602B SegNo:7452609 Prep Date: 6/2/2021 DF: 1 <br /> SPK Ref Control RPD Ref RPD <br /> Analyte Result PQL SPK Val Value %REC Limit Value %RPD Limit Qual <br /> Oil and Grease 1668 180 1600 168 93.8 75-125 0 <br /> MSD Sample ID: 21052476-01A MSD Units:mg/Kg Analysis Date:6/2/2021 12:45 PM <br /> Client ID: Run ID: O&G_210602B SegNo:7452610 Prep Date: 6/2/2021 DF:1 <br /> SPK Ref Control RPD Ref RPD <br /> Analyte Result PQL SPK Val Value %REC Limit Value %RPD Limit Qual <br /> Oil and Grease 1676 180 1600 168 94.2 75-125 1668 0.478 25 <br /> The following samples were analyzed in this batch: 21052477-01A 21052477-02A 21052477-03A <br /> 21052477-04A <br /> Note: See Qualifiers Page for a list of Qualifiers and their explanation. <br /> QC Page:8 of 11 <br />