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CASE NARRATIVE / CONFORMANCE SUMMARY <br /> Client: Cemex Job No: D82159 <br /> Site: Lyons Quarry TR-15 Kiln Baghouses Dust Report Date 5/10/2016 1.57:19 PM <br /> On 04/29/2016, 1 sample(s).0 Tnp Blank(s),and 0 Field Blank(s)were received at Accutest Mountain States(AMS)at a <br /> temperature of 14 2°C.The samples were intact and properly preserved,unless noted below. An AMS Job Number of D82159 was <br /> assigned to the project The lab sample ID,client sample ID,and date of sample collection are detailed in the report's Results <br /> Summary. <br /> Specified quality control criteria were achieved for this job except as noted below. For more information,please refer to the <br /> analytical results and QC summary pages <br /> Metals By Method SW846 6010C <br /> Matrix: LEACHATE Batch ID: MP18610 <br /> = All samples were digested and analyzed within the recommended method holding time <br /> = All method blanks for this batch meet method specific criteria. <br /> = Sample(s) D82159-1BMS,D82159-IBMSD,D82159-1BSDL were used as the QC samples for the metals analysts <br /> = The blank spike(BS)recovery(s)of Selenium are outside control limits All sample results<RL <br /> = The matrix spike(MS)and matrix spike duplicate(MSD)recovery(s)of Arsenic,Selenium,Silver are outside control limits. <br /> Spike recovery indicates possible matrix interference and/or sample nonhomogeneity <br /> = The serial dilution RPD(s)for Chromium are outside control limits for sample MP18610-SD1 Probable cause due to sample <br /> homogeneity. <br /> = MP18610-SD1 for Chromium.Serial dilution indicates possible matrix interference <br /> Matrix: SO Batch ID: MPI8619 <br /> ■ All samples were digested and analzyed within the recommended method holding time. <br /> = All method blanks for this batch meet method specific criteria. <br /> = Sample(s) D82159-1MS,D82159-1MSD,D82159-1SDL were used as the QC samples for the metals analysis. <br /> = The matrix spike(MS)recovery(s)of Antimony,Chromium,Nickel,Uranium are outside control limits Spike recovery <br /> indicates possible matrix interference and/or sample nonhomogeneity. <br /> = The matrix spike duplicate(MSD)recovery(s)of Lead,Antimony,Chromium,Nickel,Uranium are outside control limits. <br /> Probable cause due to matrix interference <br /> = The RPD(s)for the MS and MSD recoveries of Thallium are outside control limits for sample MP18619-S2 High RPD due to <br /> possible sample matrix or nonhomogeneity. <br /> = The serial dilution RPD(s)for Thallium,Arsenic.Cadmium,Lead,Molybdenum,Chromium,Nickel,Selenium are outside <br /> control limits for sample MP18619-SD1. Percent difference acceptable due to low initial sample concentration(<50 times <br /> IDL). <br /> = MP18619-SD1 for Cadmium,Chromium,Lead,Molybdenum,Nickel,and Selenium:Serial dilution indicates possible matrix <br /> interference <br /> = D82159-1 for Molybdenum:Elevated reporting hmit(s)due to matrix interference <br /> = MP 18619-MB 1 for Thallium:All sample results<RL or>10x MB concentration <br /> Metals By Method SW846 7470A <br /> Matrix: LEACHATE Batch ID: MP18612 <br /> = All samples were digested and analyzed within the recommended method holding time. <br /> = All method blanks for this batch meet method specific criteria <br /> = Sample(s) D82159-1BMS,D82159-1BMSD were used as the QC samples for the metals analysis. <br /> Tuesday,May 10,2016 Page 1 of 2 <br /> SGACCUTEST <br /> D82159 <br />