adminsitrative page 25684 · a laboratory control spike (lcs) was used for quality assurance....
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1Adminsitrative Record Page 25684
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2Adminsitrative Record Page 25685
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3Adminsitrative Record Page 25686
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64443 M L Johnson ESJWQC r1.doc
EPA method 619
Triazine Herbicides
Revised report: April 9, 2012
The report was revised to remove all detections for Sample ID: 545BSAAE-GR.
Analyst and reviewer error caused the incorrect reporting of several analytes that were
outside retention time windows and did not meet confirmation criteria.
Sample Preparation:
The water samples were extracted according to EPA method 619. All holding
times were met.
Sample Analysis Information:
The samples were analyzed for Triazine Herbicides according to EPA method 619
using a Hewlett Packard GC equipped with an NPD.
Quality Control/Assurance
Spike Recovery
A laboratory control spike (LCS) was used for quality assurance. All spike
recoveries met acceptance criteria.
Sample 545XCCART-GR,MS was designated by the client for MS/MSD
analysis. All MS/MSD acceptance criteria were met.
Method blanks
No target compound was detected at or above the reporting level.
Surrogates
Surrogate recoveries are summarized on the form 2 & 8. All surrogate
recoveries were within control limits.
Calibration
The initial and continuing calibrations were performed according to the
method. All calibration acceptance criteria were met.
Summary:
No problem was encountered. The data generated are acceptable.
Adminsitrative Record Page 25688
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64443 M L Johnson ESJWQC r1.doc
EPA method 8141A
Organophosphorous Compounds
Revised report: April 9, 2012
The report was revised to remove all detections for Sample ID: 545BSAAE-GR.
Analyst and reviewer error caused the incorrect reporting of several analytes that were
outside retention time windows and did not meet confirmation criteria.
Sample Preparation:
The water samples were extracted according to EPA method 3510C. All holding
times were met.
Sample Analysis Information:
The samples were analyzed for Organophosphorous Pesticides according to EPA
method 8141A using a Hewlett Packard GC equipped with an NPD.
Quality Control/Assurance
Spike Recovery
A Laboratory control spike (LCS) was used for quality assurance.
Dimethoate recovered below the 68% lower control limit in the LCS at 55.6%.
All other spike recoveries met acceptance criteria.
Sample 545XCCART-GR,MS was designated by the client for MS/MSD
analysis. All MS/MSD acceptance criteria were met.
Method blanks
No target compound was detected at or above the reporting level.
Surrogates
Surrogate recoveries are summarized on the form 2 & 8. All surrogate
recoveries were within control limits.
Calibration
The initial and continuing calibrations were performed according to the
method. All calibration acceptance criteria were met.
Summary:
No other problem was encountered.
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8Adminsitrative Record Page 25691
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10Adminsitrative Record Page 25693
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14Adminsitrative Record Page 25697
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15Adminsitrative Record Page 25698
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20Adminsitrative Record Page 25703
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22Adminsitrative Record Page 25705
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25Adminsitrative Record Page 25708
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27Adminsitrative Record Page 25710
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30Adminsitrative Record Page 25713
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36Adminsitrative Record Page 25719
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37Adminsitrative Record Page 25720
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38Adminsitrative Record Page 25721
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39Adminsitrative Record Page 25722
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40Adminsitrative Record Page 25723
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41Adminsitrative Record Page 25724
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42Adminsitrative Record Page 25725
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43Adminsitrative Record Page 25726
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44Adminsitrative Record Page 25727
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45Adminsitrative Record Page 25728
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47Adminsitrative Record Page 25730
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48Adminsitrative Record Page 25731
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50Adminsitrative Record Page 25733
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