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tieti eurofins Calscience Work Order Narrative Page 3 of 10 Work Order: 17-12-1281 Page 1 of 1 Condition Upon Receipt: Samples were received under Chain -of -Custody (COC) on 12/15/17. They were assigned to Work Order 17-12-1281. Unless otherwise noted on the Sample Receiving forms all samples were received in good condition and within the recommended EPA temperature criteria for the methods noted on the COC. The COC and Sample Receiving Documents are integral elements of the analytical report and are presented at the back of the report. Holding Times: All samples were analyzed within prescribed holding times (HT) and/or in accordance with the Calscience Sample Acceptance Policy unless otherwise noted in the analytical report and/or comprehensive case narrative, if required. Any parameter identified in 40CFR Part 136.3 Table II that is designated as "analyze immediately" with a holding time of <= 15 minutes (40CFR-136.3 Table Il, footnote 4), is considered a "field" test and the reported results will be qualified as being received outside of the stated holding time unless received at the laboratory within 15 minutes of the collection time. Quality Control: All quality control parameters (QC) were within established control limits except where noted in the QC summary forms or described further within this report. Subcontractor Information: a U s Unless otherwise noted below (or on the subcontract form), no samples were subcontracted. v Additional Comments: Air - Sorbent-extracted air methods (EPA TO -4A, EPA TO -10, EPA TO -13A, EPA TO -17): Analytical results are converted from mass/sample basis to mass/volume basis using client -supplied air volumes. Solid - Unless otherwise indicated, solid sample data is reported on a wet weight basis, not corrected for % moisture. All QC results are always reported on a wet weight basis. 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501