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<br />The laboratory qualifiers used to report results were as follows: <br /> <br />J = indicates an estimated value where the concentration of the analyte is less than the concentration at <br /> which test accuracy has been demonstrated (LOQ) but greater than the reporting limit (RDL) <br />N = authentic recovery in the OPR is not within method or contract control limits <br />U = identifies a compound that was not detected <br />B = analyte found in the associated blank <br />V = surrogate recovery was not within method specifications <br /> <br />Results were reported with concentration units of nanograms per litre (ng/L). Concentration and detection limits were <br />reported to three significant figures. Analysis results for each sample are provided on Analysis Report forms 1A and <br />2. <br /> <br /> <br />QA/QC NOTES <br /> <br />The samples and QC samples were analyzed in one analysis batch and was carried intact through the entire <br />analytical process. The sample data were reviewed and evaluated in relation to the batch QC samples. <br /> <br />· Sample analyte concentrations are not blank corrected and should be evaluated with the laboratory <br />procedural blank results considered. <br />· By virtue of the isotope dilution/internal standard quantification procedures, data are recovery corrected for <br />possible losses during extraction and clean up. <br />· All linearity, calibration verification, OPR, precision, laboratory procedural blank, and labeled compound <br />recovery specifications were met with the following exceptions: <br /> <br />The analyte 6:2 FTS was detected in the Lab Blank (SGS AXYS ID: WG72387-101). Data are not blank corrected. <br />Blank data should be taken into consideration when evaluating sample data. <br /> <br />Percent recovery of several analytes in the OPR and OPR duplicate (SGS AXYS ID: WG72387-102 and -103, <br />respectively) were outside the contract nominal limits but within the SGS AXYS method limit. The analytes were <br />flagged with an ‘N’. <br /> <br />The Relative Percent Difference (RPD) value of above 20% was observed for analyte MeFOSAA between the <br />OPR and OPR duplicate (SGS AXYS ID: WG72387-102 and -103, respectively). Overall, there was good <br />agreement in target analyte concentrations between the samples. <br /> <br />Percent recovery of labeled compound D5-EtFOSAA in the sample Lino Lakes Well No. 3 (SGS AXYS ID: L33032- <br />2) was below the contract nominal limit and was flagged with a ‘V’. As the isotope dilution method of quantification <br />produces data that are recovery corrected, the variances from the method acceptance criteria are deemed not to <br />affect the quantification of the analytes. Percent labeled compound recoveries are used as a general method <br />performance indicator only. <br /> <br />ANALYTICAL DISCUSSION <br /> <br />No analytical difficulty was encountered. <br /> <br />DATA PACKAGE <br /> <br />This data package was assigned a unique data package identification workgroup: DPWG72695. This ID is shown <br />on the front page of the data package. Included in the data package following this narrative report are the following <br />documents: <br /> <br />· Method summary <br />· Sample ‘Correlation Table’ <br />· Sample receiving documentation <br />· Sample data reports (in order of SGS AXYS Sample ID) <br />· Laboratory QC data reports <br />· Instrumental QC data reports (organized by analysis date) <br />www.axysanalytical.com <br />Page 4 of 94