* Expected concentration is below the revised ML Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Draft  December 2000 B 6 Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Antimony 46750 1 Reagent Water 0.0000 0.0000 Outlying Laboratory Antimony 46751 1 Reagent Water 0.0000 0.0000 Outlying Laboratory Antimony 46752 1 Reagent Water 1.0000 0.6190 Outlying Laboratory Antimony 46753 1 Reagent Water 1.0000 0.6800 Outlying Laboratory Antimony 46754 1 Reagent Water 5.0000 3.7500 Outlying Laboratory Antimony 46755 1 Reagent Water 5.0000 3.8800 Outlying Laboratory Antimony 46774 1 Reagent Water 20.0000 17.1000 Outlying Laboratory Antimony 46775 1 Reagent Water 20.0000 16.9000 Outlying Laboratory Antimony 46776 1 Unfiltered Effluent 10.0000 9.7600 Outlying Laboratory Antimony 46777 1 Unfiltered Effluent 10.0000 9.6000 Outlying Laboratory Antimony 46778 1 Filtered Effluent 1.0000 1.0900 Outlying Laboratory Antimony 46779 1 Filtered Effluent 1.0000 0.9940 Outlying Laboratory Possible contamination1 Antimony 46780 1 Filtered Freshwater 0.1241 0.1240 Outlying Laboratory Antimony 46781 1 Filtered Freshwater 0.1241 0.1190 Outlying Laboratory Antimony 47285 1 Filtered Freshwater 0.2041 0.2000 Outlying Laboratory Antimony 47286 1 Filtered Freshwater 0.2441 0.2260 Outlying Laboratory Possible contamination1 Antimony 47287 1 Filtered Freshwater 0.4041 0.3720 Outlying Laboratory Possible contamination2 Antimony 47288 1 Filtered Freshwater 0.5041 0.4660 Outlying Laboratory Possible contamination2 Antimony 47289 1 Filtered Freshwater 0.8041 0.7460 Outlying Laboratory Antimony 47290 1 Filtered Freshwater 1.0041 0.9420 Outlying Laboratory Antimony 47291 1 Reagent Water 0.1000 0.0338 Outlying Laboratory Antimony 47292 1 Reagent Water 0.1200 0.0957 Outlying Laboratory Antimony 46504 2 Filtered Freshwater 0.1241 0.1588 Antimony 46505 2 Filtered Freshwater 0.1241 0.1116 Antimony 46506 2 Filtered Effluent 1.0000 0.9923 Antimony 46507 2 Filtered Effluent 1.0000 1.0330 Antimony 46509 2 Unfiltered Effluent 10.0000 9.0020 Antimony 46510 2 Reagent Water 0.0000  0.0041 Antimony 46511 2 Reagent Water 0.0000  0.0158 Antimony 46512 2 Reagent Water 1.0000 0.6302 Antimony 46513 2 Reagent Water 1.0000 0.6413 Antimony 46514 2 Reagent Water 5.0000 4.2280 Antimony 46515 2 Reagent Water 5.0000 4.2610 Antimony 46516 2 Reagent Water 20.0000 18.9000 Antimony 46517 2 Reagent Water 20.0000 18.4100 Antimony 47231 2 Filtered Freshwater 0.2041 0.2013 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 7 Draft  December 2000 Antimony 47232 2 Filtered Freshwater 0.2441 0.2331 Antimony 47233 2 Filtered Freshwater 0.4041 0.3645 Antimony 47234 2 Filtered Freshwater 0.5041 0.4666 Antimony 47235 2 Filtered Freshwater 0.8041 0.7920 Antimony 47236 2 Filtered Freshwater 1.0041 0.9939 Antimony 47237 2 Reagent Water 0.1000 0.0461 Antimony 47238 2 Reagent Water 0.1200 0.0518 Antimony 46722 3 Filtered Freshwater 0.1241 0.1300 Antimony 46723 3 Filtered Freshwater 0.1241 0.1246 Antimony 46724 3 Filtered Effluent 1.0000 1.0195 Antimony 46725 3 Filtered Effluent 1.0000 0.9876 Antimony 46726 3 Unfiltered Effluent 10.0000 9.0936 Antimony 46727 3 Unfiltered Effluent 10.0000 9.2436 Antimony 46728 3 Reagent Water 0.0000 0.0027 Antimony 46729 3 Reagent Water 0.0000 0.0017 Antimony 46730 3 Reagent Water 1.0000 0.6640 Antimony 46731 3 Reagent Water 1.0000 0.7064 Antimony 46732 3 Reagent Water 5.0000 3.9114 Antimony 46733 3 Reagent Water 5.0000 3.9958 Antimony 46734 3 Reagent Water 20.0000 16.1164 Antimony 46735 3 Reagent Water 20.0000 16.3849 Antimony 47213 3 Filtered Freshwater 0.2041 0.2053 Antimony 47214 3 Filtered Freshwater 0.2441 0.2454 Antimony 47215 3 Filtered Freshwater 0.4041 0.3884 Antimony 47216 3 Filtered Freshwater 0.5041 0.4765 Antimony 47217 3 Filtered Freshwater 0.8041 0.7639 Antimony 47218 3 Filtered Freshwater 1.0041 0.9755 Antimony 47219 3 Reagent Water 0.1000 0.0426 Antimony 47220 3 Reagent Water 0.1200 0.1099 Antimony 46594 4 Reagent Water 0.0000 0.0260 Antimony 46595 4 Reagent Water 0.0000 0.0240 Antimony 46596 4 Reagent Water 20.0000 16.5480 Antimony 46597 4 Reagent Water 20.0000 16.6010 Antimony 46598 4 Reagent Water 5.0000 4.1680 Antimony 46599 4 Reagent Water 5.0000 4.1230 Antimony 46600 4 Reagent Water 1.0000 0.6990 Antimony 46601 4 Reagent Water 1.0000 0.7120 Antimony 46602 4 Filtered Freshwater 0.1241 0.1410 Antimony 46603 4 Filtered Freshwater 0.1241 0.1380 Antimony 46604 4 Filtered Effluent 1.0000 0.9800 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 8 Antimony 46605 4 Filtered Effluent 1.0000 1.1340 Antimony 46606 4 Unfiltered Effluent 10.0000 8.7510 Antimony 46607 4 Unfiltered Effluent 10.0000 8.9420 Antimony 47239 4 Filtered Freshwater 0.2041 0.2070 Antimony 47240 4 Filtered Freshwater 0.2441 0.2460 Antimony 47241 4 Filtered Freshwater 0.4041 0.3880 Antimony 47242 4 Filtered Freshwater 0.5041 0.4820 Antimony 47243 4 Filtered Freshwater 0.8041 0.7440 Antimony 47244 4 Filtered Freshwater 1.0041 0.9060 Antimony 47245 4 Reagent Water 0.1000 0.0500 Antimony 47246 4 Reagent Water 0.1200 0.0620 Antimony 46532 5 Filtered Freshwater 0.1241 0.1102 Antimony 46533 5 Filtered Freshwater 0.1241 0.1050 Antimony 46535 5 Filtered Effluent 1.0000 1.0284 Antimony 46536 5 Unfiltered Effluent 10.0000 10.5392 Concentration > cal range Antimony 46537 5 Unfiltered Effluent 10.0000 9.7860 Concentration > cal range Antimony 46538 5 Reagent Water 0.0000  0.0132 Antimony 46539 5 Reagent Water 0.0000  0.0108 Antimony 46702 5 Reagent Water 1.0000 0.6278 Antimony 46703 5 Reagent Water 1.0000 0.6425 Antimony 46704 5 Reagent Water 5.0000 4.1322 Antimony 46705 5 Reagent Water 5.0000 4.1184 Antimony 46706 5 Reagent Water 20.0000 18.7491 Concentration > cal range Antimony 46707 5 Reagent Water 20.0000 18.6683 Concentration > cal range Antimony 47223 5 Filtered Freshwater 0.2041 0.1984 Antimony 47224 5 Filtered Freshwater 0.2441 0.2290 Antimony 47225 5 Filtered Freshwater 0.4041 0.3728 Antimony 47226 5 Filtered Freshwater 0.5041 0.4789 Antimony 47227 5 Filtered Freshwater 0.8041 0.7774 Antimony 47228 5 Filtered Freshwater 1.0041 0.9871 Antimony 47229 5 Reagent Water 0.1000 0.0691 Antimony 47230 5 Reagent Water 0.1200 0.0424 Antimony 46554 6 Filtered Effluent 1.0000 1.0240 Antimony 46555 6 Filtered Effluent 1.0000 1.1957 Antimony 46556 6 Filtered Freshwater 0.1241 0.2055 Antimony 46557 6 Filtered Freshwater 0.1241 0.1388 Antimony 46558 6 Reagent Water 0.0000 0.0115 Antimony 46559 6 Reagent Water 0.0000 0.0131 Antimony 46560 6 Unfiltered Effluent 10.0000 9.9574 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 9 Draft  December 2000 Antimony 46561 6 Unfiltered Effluent 10.0000 9.6147 Antimony 46562 6 Reagent Water 1.0000 0.7091 Antimony 46563 6 Reagent Water 1.0000 0.6579 Antimony 46564 6 Reagent Water 5.0000 4.4013 Antimony 46565 6 Reagent Water 5.0000 4.5073 Antimony 46566 6 Reagent Water 20.0000 19.0607 Antimony 46567 6 Reagent Water 20.0000 19.0956 Antimony 47247 6 Filtered Freshwater 0.2041 0.2307 Antimony 47248 6 Filtered Freshwater 0.2441 0.2563 Antimony 47249 6 Filtered Freshwater 0.4041 0.4046 Antimony 47250 6 Filtered Freshwater 0.5041 0.4759 Antimony 47251 6 Filtered Freshwater 0.8041 0.7725 Antimony 47252 6 Filtered Freshwater 1.0041 0.9653 Antimony 47253 6 Reagent Water 0.1000 0.0971 Antimony 47254 6 Reagent Water 0.1200 0.1484 Antimony 46846 7 Reagent Water 0.0000  0.0017 Antimony 46847 7 Reagent Water 0.0000  0.0006 Antimony 46848 7 Reagent Water 1.0000 0.6017 Antimony 46849 7 Reagent Water 1.0000 0.5732 Antimony 46850 7 Reagent Water 5.0000 3.7466 Antimony 46851 7 Reagent Water 5.0000 3.7478 Antimony 46852 7 Reagent Water 20.0000 18.0506 Antimony 46853 7 Reagent Water 20.0000 18.1348 Antimony 46854 7 Filtered Effluent 1.0000 1.1239 Antimony 46855 7 Filtered Effluent 1.0000 1.0088 Antimony 46856 7 Filtered Freshwater 0.1241 0.1419 Antimony 46857 7 Filtered Freshwater 0.1241 0.1326 Antimony 47267 7 Unfiltered Effluent 10.0000 9.8225 Antimony 47268 7 Unfiltered Effluent 10.0000 9.9053 Antimony 47269 7 Filtered Freshwater 0.2041 0.2136 Antimony 47270 7 Filtered Freshwater 0.2441 0.2490 Antimony 47271 7 Filtered Freshwater 0.4041 0.3957 Antimony 47272 7 Filtered Freshwater 0.5041 0.4948 Antimony 47273 7 Filtered Freshwater 0.8041 0.7850 Antimony 47274 7 Filtered Freshwater 1.0041 0.9860 Antimony 47275 7 Reagent Water 0.1000 0.0564 Antimony 47276 7 Reagent Water 0.1200 0.1016 Antimony 46540 8 Filtered Effluent 1.0000 1.0597 Antimony 46541 8 Filtered Effluent 1.0000 1.0647 Antimony 46542 8 Unfiltered Effluent 10.0000 9.9690 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 10 Antimony 46543 8 Unfiltered Effluent 10.0000 9.8699 Antimony 46544 8 Reagent Water 20.0000 18.4290 Antimony 46545 8 Reagent Water 20.0000 18.7830 Antimony 46546 8 Filtered Freshwater 0.1241 0.1514 Antimony 46547 8 Filtered Freshwater 0.1241 0.1352 Antimony 46548 8 Reagent Water 0.0000 0.0409 Antimony 46549 8 Reagent Water 0.0000 0.0109 Antimony 46550 8 Reagent Water 1.0000 0.6547 Antimony 46551 8 Reagent Water 1.0000 0.6252 Antimony 46552 8 Reagent Water 5.0000 3.8980 Antimony 46553 8 Reagent Water 5.0000 3.8641 Antimony 47259 8 Filtered Freshwater 0.2041 0.2939 Antimony 47260 8 Filtered Freshwater 0.2441 0.2723 Antimony 47261 8 Filtered Freshwater 0.4041 0.4069 Antimony 47262 8 Filtered Freshwater 0.5041 0.4886 Antimony 47263 8 Filtered Freshwater 0.8041 0.7861 Antimony 47264 8 Filtered Freshwater 1.0041 0.9654 Antimony 47265 8 Reagent Water 0.1000 0.0662 Antimony 47266 8 Reagent Water 0.1200 0.0992 Cadmium 46750 1 Reagent Water 0.0000 0.0000 Cadmium 46751 1 Reagent Water 0.0000 0.0000 Cadmium 46752 1 Reagent Water 0.1000 0.0672 Cadmium 46753 1 Reagent Water 0.1000 0.0786 Cadmium 46754 1 Reagent Water 1.0000 0.9460 Cadmium 46755 1 Reagent Water 1.0000 0.8640 Cadmium 46774 1 Reagent Water 10.0000 8.6700 Cadmium 46775 1 Reagent Water 10.0000 8.7400 Cadmium 46776 1 Unfiltered Effluent 0.5000 0.4620 Cadmium 46777 1 Unfiltered Effluent 0.5000 0.4940 Cadmium 46778 1 Filtered Effluent 0.3000 0.3040 Cadmium 46779 1 Filtered Effluent 0.3000 0.2910 Cadmium 46780 1 Filtered Freshwater 0.2500 0.2080 Cadmium 46781 1 Filtered Freshwater 0.2500 0.2180 Cadmium 47285 1 Filtered Freshwater 0.0000 0.0000 Cadmium 47286 1 Filtered Freshwater 0.0000 0.0001 Cadmium 47287 1 Filtered Freshwater 0.0400 0.0224 Cadmium 47288 1 Filtered Freshwater 0.0500 0.0576 Cadmium 47289 1 Filtered Freshwater 0.1200 0.1190 Cadmium 47290 1 Filtered Freshwater 0.1400 0.1510 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 11 Draft  December 2000 Cadmium 47291 1 Reagent Water 0.0500 0.0469 Cadmium 47292 1 Reagent Water 0.0600 1.8400 Cadmium 46504 2 Filtered Freshwater 0.2500 0.2926 Cadmium 46505 2 Filtered Freshwater 0.2500 0.2465 Cadmium 46506 2 Filtered Effluent 0.3000 0.1854 Cadmium 46507 2 Filtered Effluent 0.3000 0.2856 Cadmium 46508 2 Unfiltered Effluent 0.5000 0.4082 Cadmium 46509 2 Unfiltered Effluent 0.5000 0.4050 Cadmium 46510 2 Reagent Water 0.0000 0.0170 Cadmium 46511 2 Reagent Water 0.0000 0.0123 Cadmium 46512 2 Reagent Water 0.1000 0.1233 Cadmium 46513 2 Reagent Water 0.1000 0.1166 Cadmium 46514 2 Reagent Water 1.0000 1.0400 Cadmium 46515 2 Reagent Water 1.0000 1.0600 Cadmium 46516 2 Reagent Water 10.0000 9.8920 Cadmium 46517 2 Reagent Water 10.0000 9.9640 Cadmium 47231 2 Filtered Freshwater 0.0000  0.0634 Cadmium 47232 2 Filtered Freshwater 0.0000 0.0042 Cadmium 47233 2 Filtered Freshwater 0.0400 0.0582 Cadmium 47234 2 Filtered Freshwater 0.0500 0.0699 Cadmium 47235 2 Filtered Freshwater 0.1200 0.1212 Cadmium 47236 2 Filtered Freshwater 0.1400 0.1466 Cadmium 47237 2 Reagent Water 0.0500 0.0678 Cadmium 47238 2 Reagent Water 0.0600 0.0785 Cadmium 46722 3 Filtered Freshwater 0.2500 0.2497 Cadmium 46723 3 Filtered Freshwater 0.2500 0.2538 Cadmium 46724 3 Filtered Effluent 0.3000 0.3243 Cadmium 46725 3 Filtered Effluent 0.3000 0.3054 Cadmium 46726 3 Unfiltered Effluent 0.5000 0.5163 Cadmium 46727 3 Unfiltered Effluent 0.5000 0.5320 Cadmium 46728 3 Reagent Water 0.0000 0.0038 Cadmium 46729 3 Reagent Water 0.0000 0.0031 Cadmium 46730 3 Reagent Water 0.1000 0.0987 Cadmium 46731 3 Reagent Water 0.1000 0.0981 Cadmium 46732 3 Reagent Water 1.0000 0.9950 Cadmium 46733 3 Reagent Water 1.0000 0.9564 Cadmium 46734 3 Reagent Water 10.0000 10.0214 Cadmium 46735 3 Reagent Water 10.0000 9.9182 Cadmium 47213 3 Filtered Freshwater 0.0000 0.0040 Cadmium 47214 3 Filtered Freshwater 0.0000 0.0048 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 12 Cadmium 47215 3 Filtered Freshwater 0.0400 0.0424 Cadmium 47216 3 Filtered Freshwater 0.0500 0.0635 Cadmium 47217 3 Filtered Freshwater 0.1200 0.1281 Cadmium 47218 3 Filtered Freshwater 0.1400 0.1426 Cadmium 47219 3 Reagent Water 0.0500 0.0541 Cadmium 47220 3 Reagent Water 0.0600 0.0633 Cadmium 46594 4 Reagent Water 0.0000 0.0050 Cadmium 46595 4 Reagent Water 0.0000  0.0010 Cadmium 46596 4 Reagent Water 10.0000 10.0840 Cadmium 46597 4 Reagent Water 10.0000 10.1590 Cadmium 46598 4 Reagent Water 1.0000 1.0180 Cadmium 46599 4 Reagent Water 1.0000 1.0490 Cadmium 46600 4 Reagent Water 0.1000 0.1100 Cadmium 46601 4 Reagent Water 0.1000 0.0980 Cadmium 46602 4 Filtered Freshwater 0.2500 0.2750 Cadmium 46603 4 Filtered Freshwater 0.2500 0.2600 Cadmium 46604 4 Filtered Effluent 0.3000 0.1990 Cadmium 46605 4 Filtered Effluent 0.3000 0.3680 Cadmium 46606 4 Unfiltered Effluent 0.5000 0.3690 Cadmium 46607 4 Unfiltered Effluent 0.5000 0.3580 Cadmium 47239 4 Filtered Freshwater 0.0000  0.0090 Cadmium 47240 4 Filtered Freshwater 0.0000  0.0070 Cadmium 47241 4 Filtered Freshwater 0.0400 0.0320 Cadmium 47242 4 Filtered Freshwater 0.0500 0.0530 Cadmium 47243 4 Filtered Freshwater 0.1200 0.1140 Cadmium 47244 4 Filtered Freshwater 0.1400 0.1320 Cadmium 47245 4 Reagent Water 0.0500 0.0470 Cadmium 47246 4 Reagent Water 0.0600 0.0600 Cadmium 46532 5 Filtered Freshwater 0.2500 0.3067 Cadmium 46533 5 Filtered Freshwater 0.2500 0.3099 Cadmium 46534 5 Filtered Effluent 0.3000 0.3996 Cadmium 46535 5 Filtered Effluent 0.3000 0.4038 Cadmium 46536 5 Unfiltered Effluent 0.5000 0.6642 Cadmium 46537 5 Unfiltered Effluent 0.5000 0.6992 Cadmium 46538 5 Reagent Water 0.0000 0.0895 Cadmium 46539 5 Reagent Water 0.0000 0.0715 Cadmium 46702 5 Reagent Water 0.1000 0.1595 Cadmium 46703 5 Reagent Water 0.1000 0.1717 Cadmium 46704 5 Reagent Water 1.0000 0.9707 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 13 Draft  December 2000 Cadmium 46705 5 Reagent Water 1.0000 1.0440 Cadmium 46706 5 Reagent Water 10.0000 9.1160 Cadmium 46707 5 Reagent Water 10.0000 9.3767 Cadmium 47223 5 Filtered Freshwater 0.0000 0.0420 Cadmium 47224 5 Filtered Freshwater 0.0000 0.0360 Cadmium 47225 5 Filtered Freshwater 0.0400 0.1028 Cadmium 47226 5 Filtered Freshwater 0.0500 0.1133 Cadmium 47227 5 Filtered Freshwater 0.1200 0.1829 Cadmium 47228 5 Filtered Freshwater 0.1400 0.1926 Cadmium 47229 5 Reagent Water 0.0500 0.0977 Cadmium 47230 5 Reagent Water 0.0600 0.1210 Cadmium 46554 6 Filtered Effluent 0.3000 0.3644 Outlying Laboratory Cadmium 46555 6 Filtered Effluent 0.3000 0.3490 Outlying Laboratory Cadmium 46556 6 Filtered Freshwater 0.2500 0.2666 Outlying Laboratory Cadmium 46557 6 Filtered Freshwater 0.2500 0.2657 Outlying Laboratory Cadmium 46558 6 Reagent Water 0.0000 0.0088 Outlying Laboratory Cadmium 46559 6 Reagent Water 0.0000 0.0148 Outlying Laboratory Cadmium 46560 6 Unfiltered Effluent 0.5000 0.5390 Outlying Laboratory Cadmium 46561 6 Unfiltered Effluent 0.5000 0.5277 Outlying Laboratory Cadmium 46562 6 Reagent Water 0.1000 0.1240 Outlying Laboratory Cadmium 46563 6 Reagent Water 0.1000 0.1038 Outlying Laboratory Cadmium 46564 6 Reagent Water 1.0000 1.0202 Outlying Laboratory Cadmium 46565 6 Reagent Water 1.0000 1.1519 Outlying Laboratory Cadmium 46566 6 Reagent Water 10.0000 10.0737 Outlying Laboratory Cadmium 46567 6 Reagent Water 10.0000 10.1802 Outlying Laboratory Cadmium 47247 6 Filtered Freshwater 0.0000 0.0132 Outlying Laboratory Cadmium 47248 6 Filtered Freshwater 0.0000 0.0157 Outlying Laboratory Cadmium 47249 6 Filtered Freshwater 0.0400 0.0349 Outlying Laboratory Cadmium 47250 6 Filtered Freshwater 0.0500 0.0640 Outlying Laboratory Cadmium 47251 6 Filtered Freshwater 0.1200 0.1414 Outlying Laboratory Cadmium 47252 6 Filtered Freshwater 0.1400 0.1570 Outlying Laboratory Cadmium 47253 6 Reagent Water 0.0500 0.0558 Outlying Laboratory Cadmium 47254 6 Reagent Water 0.0600 0.0977 Outlying Laboratory Cadmium 46846 7 Reagent Water 0.0000  0.0348 Cadmium 46847 7 Reagent Water 0.0000  0.0347 Cadmium 46848 7 Reagent Water 0.1000 0.0726 Cadmium 46849 7 Reagent Water 0.1000 0.0598 Cadmium 46850 7 Reagent Water 1.0000 0.9869 Cadmium 46851 7 Reagent Water 1.0000 0.9937 Cadmium 46852 7 Reagent Water 10.0000 10.0357 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 14 Cadmium 46853 7 Reagent Water 10.0000 10.1000 Cadmium 46854 7 Filtered Effluent 0.3000 0.1585 Cadmium 46855 7 Filtered Effluent 0.3000 0.1832 Cadmium 46856 7 Filtered Freshwater 0.2500 0.2298 Cadmium 46857 7 Filtered Freshwater 0.2500 0.2180 Cadmium 47267 7 Unfiltered Effluent 0.5000 0.4040 Cadmium 47268 7 Unfiltered Effluent 0.5000 0.3690 Cadmium 47269 7 Filtered Freshwater 0.0000  0.0373 Cadmium 47270 7 Filtered Freshwater 0.0000  0.0370 Cadmium 47271 7 Filtered Freshwater 0.0400  0.0008 Cadmium 47272 7 Filtered Freshwater 0.0500 0.0108 Cadmium 47273 7 Filtered Freshwater 0.1200 0.0816 Cadmium 47274 7 Filtered Freshwater 0.1400 0.1053 Cadmium 47275 7 Reagent Water 0.0500 0.0162 Cadmium 47276 7 Reagent Water 0.0600 0.0222 Cadmium 46540 8 Filtered Effluent 0.3000 0.2916 Cadmium 46541 8 Filtered Effluent 0.3000 0.2988 Cadmium 46542 8 Unfiltered Effluent 0.5000 0.4775 Cadmium 46543 8 Unfiltered Effluent 0.5000 0.4846 Cadmium 46544 8 Reagent Water 10.0000 9.4199 Cadmium 46545 8 Reagent Water 10.0000 9.5763 Cadmium 46546 8 Filtered Freshwater 0.2500 0.2322 Cadmium 46547 8 Filtered Freshwater 0.2500 0.2185 Cadmium 46548 8 Reagent Water 0.0000  0.0208 Cadmium 46549 8 Reagent Water 0.0000  0.0170 Cadmium 46550 8 Reagent Water 0.1000 0.0840 Cadmium 46551 8 Reagent Water 0.1000 0.0857 Cadmium 46552 8 Reagent Water 1.0000 0.9206 Cadmium 46553 8 Reagent Water 1.0000 0.9097 Cadmium 47259 8 Filtered Freshwater 0.0000  0.0218 Cadmium 47260 8 Filtered Freshwater 0.0000  0.0203 Cadmium 47261 8 Filtered Freshwater 0.0400 0.0127 Cadmium 47262 8 Filtered Freshwater 0.0500 0.0194 Cadmium 47263 8 Filtered Freshwater 0.1200 0.0942 Cadmium 47264 8 Filtered Freshwater 0.1400 0.1121 Cadmium 47265 8 Reagent Water 0.0500 0.0207 Cadmium 47266 8 Reagent Water 0.0600 0.0349 Copper 46750 1 Reagent Water 0.0000 0.0000 Outlying Laboratory Copper 46751 1 Reagent Water 0.0000 0.0000 Outlying Laboratory Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 15 Draft  December 2000 Copper 46752 1 Reagent Water 0.5000 0.4490 Outlying Laboratory Copper 46753 1 Reagent Water 0.5000 0.4420 Outlying Laboratory Copper 46754 1 Reagent Water 2.0000 1.7700 Outlying Laboratory Copper 46755 1 Reagent Water 2.0000 1.8000 Outlying Laboratory Copper 46774 1 Reagent Water 20.0000 17.9000 Outlying Laboratory Copper 46775 1 Reagent Water 20.0000 18.1000 Outlying Laboratory Copper 46776 1 Unfiltered Effluent 15.1000 14.8000 Outlying Laboratory Copper 46777 1 Unfiltered Effluent 15.1000 14.4000 Outlying Laboratory Copper 46778 1 Filtered Effluent 13.8000 14.0000 Outlying Laboratory Copper 46779 1 Filtered Effluent 13.8000 13.0000 Outlying Laboratory Copper 46780 1 Filtered Freshwater 1.0300 0.9110 Outlying Laboratory Copper 46781 1 Filtered Freshwater 1.0300 0.9870 Outlying Laboratory Copper 47285 1 Filtered Freshwater 1.5300 1.4400 Outlying Laboratory Copper 47286 1 Filtered Freshwater 1.7300 1.6900 Outlying Laboratory Copper 47287 1 Filtered Freshwater 2.5300 2.4000 Outlying Laboratory Copper 47288 1 Filtered Freshwater 3.0300 2.8800 Outlying Laboratory Copper 47289 1 Filtered Freshwater 4.5300 4.3400 Outlying Laboratory Copper 47290 1 Filtered Freshwater 5.0300 4.7200 Outlying Laboratory Copper 47291 1 Reagent Water 0.2000 0.1750 Outlying Laboratory Copper 47292 1 Reagent Water 0.2400 0.2460 Outlying Laboratory Copper 46504 2 Filtered Freshwater 1.0300 6.2910 Copper 46505 2 Filtered Freshwater 1.0300 1.4400 Copper 46506 2 Filtered Effluent 13.8000 13.8600 Copper 46507 2 Filtered Effluent 13.8000 13.1800 Copper 46508 2 Unfiltered Effluent 15.1000 15.5200 Copper 46509 2 Unfiltered Effluent 15.1000 15.2000 Copper 46510 2 Reagent Water 0.0000 0.1589 Copper 46511 2 Reagent Water 0.0000 0.1326 Copper 46512 2 Reagent Water 0.5000 1.0490 Copper 46513 2 Reagent Water 0.5000 0.8788 Copper 46514 2 Reagent Water 2.0000 2.2070 Copper 46515 2 Reagent Water 2.0000 2.1410 Copper 46516 2 Reagent Water 20.0000 19.9900 Copper 46517 2 Reagent Water 20.0000 20.2300 Copper 47231 2 Filtered Freshwater 1.5300 1.8150 Copper 47232 2 Filtered Freshwater 1.7300 1.8170 Copper 47233 2 Filtered Freshwater 2.5300 2.5870 Copper 47234 2 Filtered Freshwater 3.0300 3.2650 Copper 47235 2 Filtered Freshwater 4.5300 4.5170 Copper 47236 2 Filtered Freshwater 5.0300 5.1440 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 16 Copper 47237 2 Reagent Water 0.2000 0.4544 Copper 47238 2 Reagent Water 0.2400 0.2860 Copper 46722 3 Filtered Freshwater 1.0300 1.0159 Copper 46723 3 Filtered Freshwater 1.0300 1.0749 Copper 46724 3 Filtered Effluent 13.8000 14.6823 Copper 46725 3 Filtered Effluent 13.8000 15.2322 Copper 46726 3 Unfiltered Effluent 15.1000 17.6339 Copper 46727 3 Unfiltered Effluent 15.1000 16.2906 Copper 46728 3 Reagent Water 0.0000 0.0323 Copper 46729 3 Reagent Water 0.0000 0.0481 Copper 46730 3 Reagent Water 0.5000 0.6168 Copper 46731 3 Reagent Water 0.5000 0.6020 Copper 46732 3 Reagent Water 2.0000 2.1453 Copper 46733 3 Reagent Water 2.0000 3.2563 Copper 46734 3 Reagent Water 20.0000 19.4746 Copper 46735 3 Reagent Water 20.0000 19.7283 Copper 47213 3 Filtered Freshwater 1.5300 1.5634 Copper 47214 3 Filtered Freshwater 1.7300 1.6089 Copper 47215 3 Filtered Freshwater 2.5300 2.2561 Copper 47216 3 Filtered Freshwater 3.0300 2.8573 Copper 47217 3 Filtered Freshwater 4.5300 3.9508 Copper 47218 3 Filtered Freshwater 5.0300 4.3348 Copper 47219 3 Reagent Water 0.2000 0.3242 Copper 47220 3 Reagent Water 0.2400 0.2824 Copper 46594 4 Reagent Water 0.0000 0.0440 Copper 46595 4 Reagent Water 0.0000 0.0260 Copper 46596 4 Reagent Water 20.0000 21.0530 Copper 46597 4 Reagent Water 20.0000 21.3540 Copper 46598 4 Reagent Water 2.0000 2.1880 Copper 46599 4 Reagent Water 2.0000 2.2190 Copper 46600 4 Reagent Water 0.5000 1.1720 Copper 46601 4 Reagent Water 0.5000 0.5570 Copper 46602 4 Filtered Freshwater 1.0300 1.2270 Copper 46603 4 Filtered Freshwater 1.0300 1.2380 Copper 46604 4 Filtered Effluent 13.8000 16.1150 Copper 46605 4 Filtered Effluent 13.8000 17.7950 Individual Outlier Copper 46606 4 Unfiltered Effluent 15.1000 17.5450 Possible contamination2 Copper 46607 4 Unfiltered Effluent 15.1000 20.1940 Possible contamination2 Copper 47239 4 Filtered Freshwater 1.5300 1.7160 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 17 Draft  December 2000 Copper 47240 4 Filtered Freshwater 1.7300 1.8940 Copper 47241 4 Filtered Freshwater 2.5300 2.7240 Copper 47242 4 Filtered Freshwater 3.0300 3.4490 Copper 47243 4 Filtered Freshwater 4.5300 5.8480 Copper 47244 4 Filtered Freshwater 5.0300 5.2620 Copper 47245 4 Reagent Water 0.2000 2.0470 Copper 47246 4 Reagent Water 0.2400 0.9950 Copper 46532 5 Filtered Freshwater 1.0300 1.1891 Possible contamination1 Copper 46533 5 Filtered Freshwater 1.0300 8.0865 Individual Outlier Possible contamination1 Copper 46535 5 Filtered Effluent 13.8000 14.4274 Possible contamination1 Copper 46536 5 Unfiltered Effluent 15.1000 18.9784 Possible contamination1 Copper 46537 5 Unfiltered Effluent 15.1000 17.9623 Possible contamination1 Copper 46538 5 Reagent Water 0.0000 0.5282 Possible contamination1 Copper 46539 5 Reagent Water 0.0000 0.6445 Possible contamination1 Copper 46702 5 Reagent Water 0.5000 0.5643 Possible contamination1 Copper 46703 5 Reagent Water 0.5000 0.6304 Possible contamination1 Copper 46704 5 Reagent Water 2.0000 1.9111 Possible contamination1 Copper 46705 5 Reagent Water 2.0000 1.8558 Possible contamination1 Copper 46706 5 Reagent Water 20.0000 18.6020 Possible contamination1 Copper 46707 5 Reagent Water 20.0000 18.8151 Possible contamination1 Copper 47223 5 Filtered Freshwater 1.5300 1.7400 Possible contamination1 Copper 47224 5 Filtered Freshwater 1.7300 5.4500 Possible contamination1 Copper 47225 5 Filtered Freshwater 2.5300 2.5788 Possible contamination1 Copper 47226 5 Filtered Freshwater 3.0300 3.6508 Possible contamination1 Copper 47227 5 Filtered Freshwater 4.5300 4.3961 Possible contamination1 Copper 47228 5 Filtered Freshwater 5.0300 4.7973 Possible contamination1 Copper 47229 5 Reagent Water 0.2000 0.6310 Possible contamination1 Copper 47230 5 Reagent Water 0.2400 0.4641 Copper 46554 6 Filtered Effluent 13.8000 12.7543 Copper 46555 6 Filtered Effluent 13.8000 13.7450 Copper 46556 6 Filtered Freshwater 1.0300 1.3090 Copper 46557 6 Filtered Freshwater 1.0300 1.1262 Copper 46558 6 Reagent Water 0.0000 0.1286 Copper 46559 6 Reagent Water 0.0000 0.3061 Copper 46560 6 Unfiltered Effluent 15.1000 17.4718 Copper 46561 6 Unfiltered Effluent 15.1000 14.4560 Copper 46562 6 Reagent Water 0.5000 0.5794 Copper 46563 6 Reagent Water 0.5000 0.6422 Copper 46564 6 Reagent Water 2.0000 2.2046 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 18 Copper 46565 6 Reagent Water 2.0000 3.5277 Copper 46566 6 Reagent Water 20.0000 18.5092 Copper 46567 6 Reagent Water 20.0000 43.9433 Individual Outlier Copper 47247 6 Filtered Freshwater 1.5300 1.6680 Copper 47248 6 Filtered Freshwater 1.7300 1.8756 Copper 47249 6 Filtered Freshwater 2.5300 2.4713 Copper 47250 6 Filtered Freshwater 3.0300 2.9969 Copper 47251 6 Filtered Freshwater 4.5300 4.3591 Copper 47252 6 Filtered Freshwater 5.0300 4.5801 Copper 47253 6 Reagent Water 0.2000 0.3025 Copper 47254 6 Reagent Water 0.2400 0.5329 Copper 46846 7 Reagent Water 0.0000 0.0161 Copper 46847 7 Reagent Water 0.0000 0.0160 Copper 46848 7 Reagent Water 0.5000 0.4596 Copper 46849 7 Reagent Water 0.5000 0.4643 Copper 46850 7 Reagent Water 2.0000 1.9044 Copper 46851 7 Reagent Water 2.0000 1.8799 Copper 46852 7 Reagent Water 20.0000 18.5410 Copper 46853 7 Reagent Water 20.0000 18.9762 Copper 46854 7 Filtered Effluent 13.8000 14.6566 Copper 46855 7 Filtered Effluent 13.8000 14.7489 Copper 46856 7 Filtered Freshwater 1.0300 1.0672 Copper 46857 7 Filtered Freshwater 1.0300 1.0314 Copper 47267 7 Unfiltered Effluent 15.1000 15.1818 Copper 47268 7 Unfiltered Effluent 15.1000 15.3126 Copper 47269 7 Filtered Freshwater 1.5300 1.4750 Copper 47270 7 Filtered Freshwater 1.7300 1.6631 Copper 47271 7 Filtered Freshwater 2.5300 2.3944 Copper 47272 7 Filtered Freshwater 3.0300 2.8477 Copper 47273 7 Filtered Freshwater 4.5300 4.1560 Copper 47274 7 Filtered Freshwater 5.0300 4.6702 Copper 47275 7 Reagent Water 0.2000 0.1925 Copper 47276 7 Reagent Water 0.2400 0.2383 Copper 46540 8 Filtered Effluent 13.8000 13.8010 Copper 46541 8 Filtered Effluent 13.8000 13.6680 Copper 46542 8 Unfiltered Effluent 15.1000 15.4382 Copper 46543 8 Unfiltered Effluent 15.1000 15.5194 Copper 46544 8 Reagent Water 20.0000 18.1127 Copper 46545 8 Reagent Water 20.0000 18.5166 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 19 Draft  December 2000 Copper 46546 8 Filtered Freshwater 1.0300 1.0520 Copper 46547 8 Filtered Freshwater 1.0300 1.0250 Copper 46548 8 Reagent Water 0.0000 0.0173 Copper 46549 8 Reagent Water 0.0000 0.0180 Copper 46550 8 Reagent Water 0.5000 0.4540 Copper 46551 8 Reagent Water 0.5000 0.4798 Copper 46552 8 Reagent Water 2.0000 1.7638 Copper 46553 8 Reagent Water 2.0000 1.8114 Copper 47259 8 Filtered Freshwater 1.5300 1.4739 Copper 47260 8 Filtered Freshwater 1.7300 1.6273 Copper 47261 8 Filtered Freshwater 2.5300 2.3142 Copper 47262 8 Filtered Freshwater 3.0300 2.8229 Copper 47263 8 Filtered Freshwater 4.5300 4.0287 Copper 47264 8 Filtered Freshwater 5.0300 4.5219 Copper 47265 8 Reagent Water 0.2000 0.1719 Copper 47266 8 Reagent Water 0.2400 0.2100 Lead 46750 1 Reagent Water 0.0000 0.0004 Outlying Laboratory Lead 46751 1 Reagent Water 0.0000 0.0035 Outlying Laboratory Lead 46752 1 Reagent Water 0.1000 0.0790 Outlying Laboratory Lead 46753 1 Reagent Water 0.1000 0.0832 Outlying Laboratory Lead 46754 1 Reagent Water 0.5000 0.4540 Outlying Laboratory Lead 46755 1 Reagent Water 0.5000 0.4510 Outlying Laboratory Lead 46774 1 Reagent Water 5.0000 4.2700 Outlying Laboratory Lead 46775 1 Reagent Water 5.0000 4.2600 Outlying Laboratory Lead 46776 1 Unfiltered Effluent 1.0557 0.9680 Outlying Laboratory Lead 46777 1 Unfiltered Effluent 1.0557 0.9730 Outlying Laboratory Lead 46778 1 Filtered Effluent 0.5000 0.5310 Outlying Laboratory Lead 46779 1 Filtered Effluent 0.5000 0.4870 Outlying Laboratory Lead 46780 1 Filtered Freshwater 0.2000 0.1570 Outlying Laboratory Lead 46781 1 Filtered Freshwater 0.2000 0.2200 Outlying Laboratory Lead 47285 1 Filtered Freshwater 0.0128 0.0160 Outlying Laboratory Lead 47286 1 Filtered Freshwater 0.0128 0.0131 Outlying Laboratory Lead 47287 1 Filtered Freshwater 0.0528 0.0487 Outlying Laboratory Lead 47288 1 Filtered Freshwater 0.0628 0.1090 Outlying Laboratory Possible contamination2 Lead 47289 1 Filtered Freshwater 0.3128 0.2690 Outlying Laboratory Lead 47290 1 Filtered Freshwater 0.6328 0.3220 Outlying Laboratory Lead 47291 1 Reagent Water 0.0300 0.0366 Outlying Laboratory Lead 47292 1 Reagent Water 0.0360 0.0271 Outlying Laboratory Lead 46504 2 Filtered Freshwater 0.2000 0.3806 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 20 Lead 46505 2 Filtered Freshwater 0.2000 0.4883 Individual Outlier Lead 46506 2 Filtered Effluent 0.5000 0.6331 Lead 46507 2 Filtered Effluent 0.5000 0.7302 Lead 46508 2 Unfiltered Effluent 1.0557 1.1380 Lead 46509 2 Unfiltered Effluent 1.0557 1.1410 Lead 46510 2 Reagent Water 0.0000 0.1292 Lead 46511 2 Reagent Water 0.0000 0.0541 Lead 46512 2 Reagent Water 0.1000 0.2634 Individual Outlier Lead 46513 2 Reagent Water 0.1000 0.1817 Lead 46514 2 Reagent Water 0.5000 0.6876 Lead 46515 2 Reagent Water 0.5000 0.5714 Lead 46516 2 Reagent Water 5.0000 5.1920 Lead 46517 2 Reagent Water 5.0000 5.0520 Lead 47231 2 Filtered Freshwater 0.0128 0.0852 Lead 47232 2 Filtered Freshwater 0.0128 0.0770 Lead 47233 2 Filtered Freshwater 0.0528 0.1464 Lead 47234 2 Filtered Freshwater 0.0628 0.2292 Lead 47235 2 Filtered Freshwater 0.3128 0.3636 Lead 47236 2 Filtered Freshwater 0.6328 0.5197 Lead 47237 2 Reagent Water 0.0300 0.1964 Lead 47238 2 Reagent Water 0.0360 0.0852 Lead 46722 3 Filtered Freshwater 0.2000 0.2403 Lead 46723 3 Filtered Freshwater 0.2000 0.2358 Lead 46724 3 Filtered Effluent 0.5000 0.6978 Lead 46725 3 Filtered Effluent 0.5000 0.6215 Lead 46726 3 Unfiltered Effluent 1.0557 1.2198 Lead 46727 3 Unfiltered Effluent 1.0557 1.1774 Lead 46728 3 Reagent Water 0.0000 0.0103 Lead 46729 3 Reagent Water 0.0000 0.0145 Lead 46730 3 Reagent Water 0.1000 0.1167 Lead 46731 3 Reagent Water 0.1000 0.1194 Lead 46732 3 Reagent Water 0.5000 0.5013 Lead 46733 3 Reagent Water 0.5000 0.5341 Lead 46734 3 Reagent Water 5.0000 4.9543 Lead 46735 3 Reagent Water 5.0000 5.0154 Lead 47213 3 Filtered Freshwater 0.0128 0.0437 Lead 47214 3 Filtered Freshwater 0.0128 0.0486 Lead 47215 3 Filtered Freshwater 0.0528 0.0835 Lead 47216 3 Filtered Freshwater 0.0628 0.1106 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 21 Draft  December 2000 Lead 47217 3 Filtered Freshwater 0.3128 0.3460 Lead 47218 3 Filtered Freshwater 0.6328 0.3924 Lead 47219 3 Reagent Water 0.0300 0.0605 Lead 47220 3 Reagent Water 0.0360 0.0519 Lead 46594 4 Reagent Water 0.0000 0.0070 Lead 46595 4 Reagent Water 0.0000 0.0040 Lead 46596 4 Reagent Water 5.0000 5.1970 Lead 46597 4 Reagent Water 5.0000 5.2670 Lead 46598 4 Reagent Water 0.5000 0.5160 Lead 46599 4 Reagent Water 0.5000 0.5170 Lead 46600 4 Reagent Water 0.1000 0.1060 Lead 46601 4 Reagent Water 0.1000 0.1030 Lead 46602 4 Filtered Freshwater 0.2000 0.2200 Lead 46603 4 Filtered Freshwater 0.2000 0.2220 Lead 46604 4 Filtered Effluent 0.5000 0.5650 Lead 46605 4 Filtered Effluent 0.5000 0.7330 Lead 46606 4 Unfiltered Effluent 1.0557 1.0530 Lead 46607 4 Unfiltered Effluent 1.0557 1.0840 Lead 47239 4 Filtered Freshwater 0.0128 0.0280 Lead 47240 4 Filtered Freshwater 0.0128 0.0310 Lead 47241 4 Filtered Freshwater 0.0528 0.0690 Lead 47242 4 Filtered Freshwater 0.0628 0.0820 Lead 47243 4 Filtered Freshwater 0.3128 0.3540 Lead 47244 4 Filtered Freshwater 0.6328 0.3860 Lead 47245 4 Reagent Water 0.0300 0.0670 Lead 47246 4 Reagent Water 0.0360 0.0390 Lead 46532 5 Filtered Freshwater 0.2000 0.3552 Possible contamination1 Lead 46533 5 Filtered Freshwater 0.2000 0.2326 Possible contamination1 Lead 46534 5 Filtered Effluent 0.5000 0.5874 Possible contamination1 Lead 46535 5 Filtered Effluent 0.5000 0.5899 Possible contamination1 Lead 46536 5 Unfiltered Effluent 1.0557 1.7818 Possible contamination1 Lead 46537 5 Unfiltered Effluent 1.0557 2.7456 Individual Outlier Possible contamination1 Lead 46538 5 Reagent Water 0.0000 0.0594 Possible contamination1 Lead 46539 5 Reagent Water 0.0000 0.1421 Possible contamination1 Lead 46702 5 Reagent Water 0.1000 0.1596 Possible contamination1 Lead 46703 5 Reagent Water 0.1000 0.1953 Possible contamination1 Lead 46704 5 Reagent Water 0.5000 0.4931 Possible contamination1 Lead 46705 5 Reagent Water 0.5000 0.5157 Possible contamination1 Lead 46706 5 Reagent Water 5.0000 4.7988 Possible contamination1 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 22 Lead 46707 5 Reagent Water 5.0000 4.8011 Possible contamination1 Lead 47223 5 Filtered Freshwater 0.0128 0.0630 Possible contamination1 Lead 47224 5 Filtered Freshwater 0.0128 0.1640 Possible contamination1 Lead 47225 5 Filtered Freshwater 0.0528 0.0958 Possible contamination1 Lead 47226 5 Filtered Freshwater 0.0628 0.0835 Possible contamination1 Lead 47227 5 Filtered Freshwater 0.3128 0.4236 Possible contamination1 Lead 47228 5 Filtered Freshwater 0.6328 0.3797 Possible contamination1 Lead 47229 5 Reagent Water 0.0300 0.1422 Possible contamination1 Lead 47230 5 Reagent Water 0.0360 0.1253 Possible contamination1 Lead 46554 6 Filtered Effluent 0.5000 0.6123 Lead 46555 6 Filtered Effluent 0.5000 0.6286 Lead 46556 6 Filtered Freshwater 0.2000 0.2493 Lead 46557 6 Filtered Freshwater 0.2000 0.2500 Lead 46558 6 Reagent Water 0.0000 0.0208 Lead 46559 6 Reagent Water 0.0000 0.0291 Lead 46560 6 Unfiltered Effluent 1.0557 1.1253 Lead 46561 6 Unfiltered Effluent 1.0557 1.1737 Lead 46562 6 Reagent Water 0.1000 0.1160 Lead 46563 6 Reagent Water 0.1000 0.1135 Possible contamination2 Lead 46564 6 Reagent Water 0.5000 0.5201 Lead 46565 6 Reagent Water 0.5000 2.4625 Individual Outlier Lead 46566 6 Reagent Water 5.0000 5.0285 Lead 46567 6 Reagent Water 5.0000 6.3171 Individual Outlier Lead 47247 6 Filtered Freshwater 0.0128 0.0603 Possible contamination1 Lead 47248 6 Filtered Freshwater 0.0128 0.1225 Possible contamination2 Lead 47249 6 Filtered Freshwater 0.0528 0.0890 Possible contamination1 Lead 47250 6 Filtered Freshwater 0.0628 0.1112 Possible contamination2 Lead 47251 6 Filtered Freshwater 0.3128 0.3379 Lead 47252 6 Filtered Freshwater 0.6328 0.3967 Lead 47253 6 Reagent Water 0.0300 0.0528 Possible contamination1 Lead 47254 6 Reagent Water 0.0360 0.0777 Possible contamination1 Lead 46846 7 Reagent Water 0.0000 0.0051 Lead 46847 7 Reagent Water 0.0000 0.0052 Lead 46848 7 Reagent Water 0.1000 0.0996 Lead 46849 7 Reagent Water 0.1000 0.0974 Lead 46850 7 Reagent Water 0.5000 0.4792 Lead 46851 7 Reagent Water 0.5000 0.4807 Lead 46852 7 Reagent Water 5.0000 4.8454 Lead 46853 7 Reagent Water 5.0000 4.8580 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 23 Draft  December 2000 Lead 46854 7 Filtered Effluent 0.5000 0.5339 Lead 46855 7 Filtered Effluent 0.5000 0.5326 Lead 46856 7 Filtered Freshwater 0.2000 0.2166 Lead 46857 7 Filtered Freshwater 0.2000 0.2143 Lead 47267 7 Unfiltered Effluent 1.0557 0.8502 Lead 47268 7 Unfiltered Effluent 1.0557 0.8549 Lead 47269 7 Filtered Freshwater 0.0128 0.0280 Lead 47270 7 Filtered Freshwater 0.0128 0.0278 Lead 47271 7 Filtered Freshwater 0.0528 0.0678 Possible contamination1 Lead 47272 7 Filtered Freshwater 0.0628 0.0791 Possible contamination1 Lead 47273 7 Filtered Freshwater 0.3128 0.3156 Lead 47274 7 Filtered Freshwater 0.6328 0.3653 Lead 47275 7 Reagent Water 0.0300 0.0375 Lead 47276 7 Reagent Water 0.0360 0.0366 Lead 46540 8 Filtered Effluent 0.5000 0.6138 Lead 46541 8 Filtered Effluent 0.5000 0.5709 Lead 46542 8 Unfiltered Effluent 1.0557 1.1202 Lead 46543 8 Unfiltered Effluent 1.0557 1.1145 Lead 46544 8 Reagent Water 5.0000 4.8273 Lead 46545 8 Reagent Water 5.0000 4.9817 Lead 46546 8 Filtered Freshwater 0.2000 0.2203 Lead 46547 8 Filtered Freshwater 0.2000 0.2217 Lead 46548 8 Reagent Water 0.0000  0.0016 Lead 46549 8 Reagent Water 0.0000 0.0004 Lead 46550 8 Reagent Water 0.1000 0.0943 Lead 46551 8 Reagent Water 0.1000 0.0921 Lead 46552 8 Reagent Water 0.5000 0.4677 Lead 46553 8 Reagent Water 0.5000 0.4772 Lead 47259 8 Filtered Freshwater 0.0128 0.0180 Lead 47260 8 Filtered Freshwater 0.0128 0.0211 Lead 47261 8 Filtered Freshwater 0.0528 0.0550 Lead 47262 8 Filtered Freshwater 0.0628 0.0670 Lead 47263 8 Filtered Freshwater 0.3128 0.2972 Lead 47264 8 Filtered Freshwater 0.6328 0.3550 Lead 47265 8 Reagent Water 0.0300 0.0239 Lead 47266 8 Reagent Water 0.0360 0.0290 Nickel 46750 1 Reagent Water 0.0000 0.0000 Nickel 46751 1 Reagent Water 0.0000 0.0000 Nickel 46752 1 Reagent Water 1.0000 0.9190 Nickel 46753 1 Reagent Water 1.0000 0.8190 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 24 Nickel 46754 1 Reagent Water 10.0000 8.9500 Nickel 46755 1 Reagent Water 10.0000 8.8200 Nickel 46774 1 Reagent Water 100.0000 87.1000 Concentration > cal range Nickel 46775 1 Reagent Water 100.0000 86.9000 Concentration > cal range Nickel 46776 1 Unfiltered Effluent 8.0000 7.5900 Nickel 46777 1 Unfiltered Effluent 8.0000 7.6000 Nickel 46778 1 Filtered Effluent 7.0000 7.1100 Nickel 46779 1 Filtered Effluent 7.0000 6.5200 Nickel 46780 1 Filtered Freshwater 6.0000 5.1800 Nickel 46781 1 Filtered Freshwater 6.0000 5.7500 Nickel 47285 1 Filtered Freshwater 0.3100 0.4940 Nickel 47286 1 Filtered Freshwater 0.3100 0.5130 Nickel 47287 1 Filtered Freshwater 1.6100 1.7200 Nickel 47288 1 Filtered Freshwater 1.8100 1.8800 Nickel 47289 1 Filtered Freshwater 3.3100 3.2800 Nickel 47290 1 Filtered Freshwater 4.0100 3.8600 Nickel 47291 1 Reagent Water 0.5000 0.4200 Nickel 47292 1 Reagent Water 0.6000 0.5230 Nickel 46504 2 Filtered Freshwater 6.0000 6.9970 Outlying Laboratory Nickel 46505 2 Filtered Freshwater 6.0000 6.7370 Outlying Laboratory Nickel 46506 2 Filtered Effluent 7.0000 7.0590 Outlying Laboratory Nickel 46507 2 Filtered Effluent 7.0000 7.3030 Outlying Laboratory Nickel 46508 2 Unfiltered Effluent 8.0000 7.6590 Outlying Laboratory Possible contamination1 Nickel 46509 2 Unfiltered Effluent 8.0000 7.8510 Outlying Laboratory Nickel 46510 2 Reagent Water 0.0000 0.0303 Outlying Laboratory Nickel 46511 2 Reagent Water 0.0000 0.0256 Outlying Laboratory Nickel 46512 2 Reagent Water 1.0000 1.4040 Outlying Laboratory Nickel 46513 2 Reagent Water 1.0000 0.9972 Outlying Laboratory Nickel 46514 2 Reagent Water 10.0000 10.1900 Outlying Laboratory Nickel 46515 2 Reagent Water 10.0000 10.6900 Outlying Laboratory Nickel 46516 2 Reagent Water 100.0000 98.7800 Outlying Laboratory Nickel 46517 2 Reagent Water 100.0000 99.2600 Outlying Laboratory Nickel 47231 2 Filtered Freshwater 0.3100 0.8529 Outlying Laboratory Nickel 47232 2 Filtered Freshwater 0.3100 0.7177 Outlying Laboratory Nickel 47233 2 Filtered Freshwater 1.6100 1.9840 Outlying Laboratory Nickel 47234 2 Filtered Freshwater 1.8100 2.2680 Outlying Laboratory Nickel 47235 2 Filtered Freshwater 3.3100 3.7520 Outlying Laboratory Nickel 47236 2 Filtered Freshwater 4.0100 4.4710 Outlying Laboratory Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 25 Draft  December 2000 Nickel 47237 2 Reagent Water 0.5000 0.5463 Outlying Laboratory Nickel 47238 2 Reagent Water 0.6000 0.6395 Outlying Laboratory Nickel 46722 3 Filtered Freshwater 6.0000 6.1251 Nickel 46723 3 Filtered Freshwater 6.0000 5.8139 Nickel 46724 3 Filtered Effluent 7.0000 6.6059 Nickel 46725 3 Filtered Effluent 7.0000 6.3867 Nickel 46726 3 Unfiltered Effluent 8.0000 7.0975 Nickel 46727 3 Unfiltered Effluent 8.0000 7.1137 Nickel 46728 3 Reagent Water 0.0000 0.0069 Nickel 46729 3 Reagent Water 0.0000 0.0152 Nickel 46730 3 Reagent Water 1.0000 0.9903 Nickel 46731 3 Reagent Water 1.0000 0.9264 Nickel 46732 3 Reagent Water 10.0000 9.2682 Nickel 46733 3 Reagent Water 10.0000 9.3891 Nickel 46734 3 Reagent Water 100.0000 91.9907 Nickel 46735 3 Reagent Water 100.0000 94.0182 Nickel 47213 3 Filtered Freshwater 0.3100 0.6528 Nickel 47214 3 Filtered Freshwater 0.3100 0.6711 Nickel 47215 3 Filtered Freshwater 1.6100 1.6941 Nickel 47216 3 Filtered Freshwater 1.8100 1.9425 Nickel 47217 3 Filtered Freshwater 3.3100 3.1383 Nickel 47218 3 Filtered Freshwater 4.0100 3.5813 Nickel 47219 3 Reagent Water 0.5000 0.4731 Nickel 47220 3 Reagent Water 0.6000 0.5952 Nickel 46594 4 Reagent Water 0.0000 0.0010 Nickel 46595 4 Reagent Water 0.0000 0.0030 Nickel 46596 4 Reagent Water 100.0000 97.5750 Nickel 46597 4 Reagent Water 100.0000 97.7140 Nickel 46598 4 Reagent Water 10.0000 10.2880 Individual Outlier Nickel 46599 4 Reagent Water 10.0000 9.9170 Nickel 46600 4 Reagent Water 1.0000 0.9670 Nickel 46601 4 Reagent Water 1.0000 0.9890 Nickel 46602 4 Filtered Freshwater 6.0000 6.2400 Nickel 46603 4 Filtered Freshwater 6.0000 6.1380 Nickel 46604 4 Filtered Effluent 7.0000 6.8580 Nickel 46605 4 Filtered Effluent 7.0000 7.1600 Nickel 46606 4 Unfiltered Effluent 8.0000 8.9260 Nickel 46607 4 Unfiltered Effluent 8.0000 8.7740 Nickel 47239 4 Filtered Freshwater 0.3100 0.6570 Nickel 47240 4 Filtered Freshwater 0.3100 0.6600 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 26 Nickel 47241 4 Filtered Freshwater 1.6100 1.9240 Nickel 47242 4 Filtered Freshwater 1.8100 2.1060 Nickel 47243 4 Filtered Freshwater 3.3100 3.5990 Nickel 47244 4 Filtered Freshwater 4.0100 4.1060 Nickel 47245 4 Reagent Water 0.5000 1.5430 Nickel 47246 4 Reagent Water 0.6000 0.6310 Nickel 46532 5 Filtered Freshwater 6.0000 6.9102 Possible contamination1 Nickel 46533 5 Filtered Freshwater 6.0000 6.2185 Possible contamination1 Nickel 46534 5 Filtered Effluent 7.0000 6.9976 Possible contamination1 Nickel 46535 5 Filtered Effluent 7.0000 7.0286 Possible contamination1 Nickel 46536 5 Unfiltered Effluent 8.0000 9.0821 Possible contamination1 Nickel 46537 5 Unfiltered Effluent 8.0000 8.5336 Possible contamination1 Nickel 46538 5 Reagent Water 0.0000 3.3073 Possible contamination1 Nickel 46539 5 Reagent Water 0.0000  0.0714 Nickel 46702 5 Reagent Water 1.0000 0.8445 Possible contamination1 Nickel 46703 5 Reagent Water 1.0000 0.9866 Possible contamination1 Nickel 46704 5 Reagent Water 10.0000 9.0384 Possible contamination1 Nickel 46705 5 Reagent Water 10.0000 9.3564 Possible contamination1 Nickel 46706 5 Reagent Water 100.0000 91.7845 Concentration > cal range Nickel 46707 5 Reagent Water 100.0000 92.9108 Concentration > cal range Nickel 47223 5 Filtered Freshwater 0.3100 0.9110 Possible contamination1 Nickel 47224 5 Filtered Freshwater 0.3100 3.1600 Possible contamination1 Nickel 47225 5 Filtered Freshwater 1.6100 2.0831 Possible contamination1 Nickel 47226 5 Filtered Freshwater 1.8100 2.3118 Possible contamination1 Nickel 47227 5 Filtered Freshwater 3.3100 3.5877 Possible contamination1 Nickel 47228 5 Filtered Freshwater 4.0100 4.2850 Possible contamination1 Nickel 47229 5 Reagent Water 0.5000 0.4734 Nickel 47230 5 Reagent Water 0.6000 0.5540 Possible contamination1 Nickel 46554 6 Filtered Effluent 7.0000 4.5314 Individual Outlier Nickel 46555 6 Filtered Effluent 7.0000 5.1111 Nickel 46556 6 Filtered Freshwater 6.0000 5.6038 Nickel 46557 6 Filtered Freshwater 6.0000 4.6596 Nickel 46558 6 Reagent Water 0.0000 0.0312 Nickel 46559 6 Reagent Water 0.0000 0.2107 Nickel 46560 6 Unfiltered Effluent 8.0000 6.6759 Nickel 46561 6 Unfiltered Effluent 8.0000 5.3956 Nickel 46562 6 Reagent Water 1.0000 0.8887 Nickel 46563 6 Reagent Water 1.0000 0.9097 Nickel 46564 6 Reagent Water 10.0000 8.9976 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 27 Draft  December 2000 Nickel 46565 6 Reagent Water 10.0000 9.4099 Nickel 46566 6 Reagent Water 100.0000 87.9207 Nickel 46567 6 Reagent Water 100.0000 89.4755 Nickel 47247 6 Filtered Freshwater 0.3100 0.0000 Nickel 47248 6 Filtered Freshwater 0.3100 0.0000 Nickel 47249 6 Filtered Freshwater 1.6100 1.0149 Nickel 47250 6 Filtered Freshwater 1.8100 1.1366 Nickel 47251 6 Filtered Freshwater 3.3100 2.4122 Nickel 47252 6 Filtered Freshwater 4.0100 3.0205 Nickel 47253 6 Reagent Water 0.5000 0.4697 Nickel 47254 6 Reagent Water 0.6000 0.8110 Nickel 46846 7 Reagent Water 0.0000 0.0077 Nickel 46847 7 Reagent Water 0.0000 0.0025 Nickel 46848 7 Reagent Water 1.0000 0.9141 Nickel 46849 7 Reagent Water 1.0000 0.9261 Nickel 46850 7 Reagent Water 10.0000 9.3127 Nickel 46851 7 Reagent Water 10.0000 9.1843 Nickel 46852 7 Reagent Water 100.0000 90.3164 Nickel 46853 7 Reagent Water 100.0000 92.2033 Nickel 46854 7 Filtered Effluent 7.0000 6.9029 Nickel 46855 7 Filtered Effluent 7.0000 6.8971 Nickel 46856 7 Filtered Freshwater 6.0000 5.7563 Nickel 46857 7 Filtered Freshwater 6.0000 5.7324 Nickel 47267 7 Unfiltered Effluent 8.0000 7.3304 Nickel 47268 7 Unfiltered Effluent 8.0000 7.4195 Nickel 47269 7 Filtered Freshwater 0.3100 0.4790 Nickel 47270 7 Filtered Freshwater 0.3100 0.4592 Nickel 47271 7 Filtered Freshwater 1.6100 1.6675 Nickel 47272 7 Filtered Freshwater 1.8100 1.8115 Nickel 47273 7 Filtered Freshwater 3.3100 3.1570 Nickel 47274 7 Filtered Freshwater 4.0100 3.8903 Nickel 47275 7 Reagent Water 0.5000 0.4378 Nickel 47276 7 Reagent Water 0.6000 0.5348 Nickel 46540 8 Filtered Effluent 7.0000 6.9385 Nickel 46541 8 Filtered Effluent 7.0000 6.7290 Nickel 46542 8 Unfiltered Effluent 8.0000 7.6763 Nickel 46543 8 Unfiltered Effluent 8.0000 7.7658 Nickel 46544 8 Reagent Water 100.0000 92.6188 Nickel 46545 8 Reagent Water 100.0000 91.9590 Nickel 46546 8 Filtered Freshwater 6.0000 6.0458 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 28 Nickel 46547 8 Filtered Freshwater 6.0000 5.8885 Nickel 46548 8 Reagent Water 0.0000 0.0083 Nickel 46549 8 Reagent Water 0.0000 0.0055 Nickel 46550 8 Reagent Water 1.0000 0.9131 Nickel 46551 8 Reagent Water 1.0000 0.9435 Nickel 46552 8 Reagent Water 10.0000 9.1786 Nickel 46553 8 Reagent Water 10.0000 9.1672 Nickel 47259 8 Filtered Freshwater 0.3100 0.6062 Nickel 47260 8 Filtered Freshwater 0.3100 0.6288 Nickel 47261 8 Filtered Freshwater 1.6100 1.8047 Nickel 47262 8 Filtered Freshwater 1.8100 1.9671 Nickel 47263 8 Filtered Freshwater 3.3100 3.2257 Nickel 47264 8 Filtered Freshwater 4.0100 3.9768 Nickel 47265 8 Reagent Water 0.5000 0.4448 Nickel 47266 8 Reagent Water 0.6000 0.5525 Selenium 46750 1 Reagent Water 0.0000 0.0000 Selenium 46751 1 Reagent Water 0.0000 0.0000 Selenium 46752 1 Reagent Water 5.0000 5.6400 Selenium 46753 1 Reagent Water 5.0000 5.3500 Selenium 46754 1 Reagent Water 20.0000 22.4000 Selenium 46755 1 Reagent Water 20.0000 22.3000 Selenium 46774 1 Reagent Water 100.0000 107.0000 Concentration > cal range Selenium 46775 1 Reagent Water 100.0000 111.0000 Concentration > cal range Selenium 46776 1 Unfiltered Effluent 6.0000 9.9700 Selenium 46777 1 Unfiltered Effluent 6.0000 11.0000 Selenium 46778 1 Filtered Effluent 5.0000 8.8700 Selenium 46779 1 Filtered Effluent 5.0000 8.6700 Selenium 46780 1 Filtered Freshwater 4.0000 3.7900 Selenium 46781 1 Filtered Freshwater 4.0000 4.1900 Selenium 47285 1 Filtered Freshwater 0.3810 0.2890 Selenium 47286 1 Filtered Freshwater 0.3810 0.1760 Selenium 47287 1 Filtered Freshwater 0.9810 0.9890 Selenium 47288 1 Filtered Freshwater 1.1810 1.0400 Selenium 47289 1 Filtered Freshwater 1.9810 1.4000 Selenium 47290 1 Filtered Freshwater 2.3810 2.2900 Selenium 47291 1 Reagent Water 1.0000 0.9430 Selenium 47292 1 Reagent Water 1.2000 1.0700 Selenium 46504 2 Filtered Freshwater 4.0000 3.9550 Selenium 46505 2 Filtered Freshwater 4.0000 3.5530 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 29 Draft  December 2000 Selenium 46506 2 Filtered Effluent 5.0000 7.2890 Selenium 46507 2 Filtered Effluent 5.0000 7.5030 Selenium 46508 2 Unfiltered Effluent 6.0000 8.4000 Selenium 46509 2 Unfiltered Effluent 6.0000 9.1760 Selenium 46510 2 Reagent Water 0.0000 0.4753 Selenium 46511 2 Reagent Water 0.0000 0.2495 Selenium 46512 2 Reagent Water 5.0000 4.5400 Selenium 46513 2 Reagent Water 5.0000 5.9650 Selenium 46514 2 Reagent Water 20.0000 18.7500 Selenium 46515 2 Reagent Water 20.0000 19.3300 Selenium 46516 2 Reagent Water 100.0000 95.3600 Selenium 46517 2 Reagent Water 100.0000 96.5400 Selenium 47231 2 Filtered Freshwater 0.3810 0.1495 Selenium 47232 2 Filtered Freshwater 0.3810  0.2973 Selenium 47233 2 Filtered Freshwater 0.9810 0.0069 Selenium 47234 2 Filtered Freshwater 1.1810 1.4730 Selenium 47235 2 Filtered Freshwater 1.9810 1.3650 Selenium 47236 2 Filtered Freshwater 2.3810 1.2640 Selenium 47237 2 Reagent Water 1.0000 0.9426 Selenium 47238 2 Reagent Water 1.2000 0.6453 Selenium 46722 3 Filtered Freshwater 4.0000 3.7678 Selenium 46723 3 Filtered Freshwater 4.0000 3.9146 Selenium 46724 3 Filtered Effluent 5.0000 8.0103 Selenium 46725 3 Filtered Effluent 5.0000 8.1828 Selenium 46726 3 Unfiltered Effluent 6.0000 9.4909 Selenium 46727 3 Unfiltered Effluent 6.0000 9.7532 Selenium 46728 3 Reagent Water 0.0000 0.0862 Selenium 46729 3 Reagent Water 0.0000  0.1122 Selenium 46730 3 Reagent Water 5.0000 5.0323 Selenium 46731 3 Reagent Water 5.0000 4.9782 Selenium 46732 3 Reagent Water 20.0000 20.9289 Selenium 46733 3 Reagent Water 20.0000 21.1048 Selenium 46734 3 Reagent Water 100.0000 113.2210 Selenium 46735 3 Reagent Water 100.0000 113.7347 Selenium 47213 3 Filtered Freshwater 0.3810 0.1444 Selenium 47214 3 Filtered Freshwater 0.3810 0.1777 Selenium 47215 3 Filtered Freshwater 0.9810 0.7959 Selenium 47216 3 Filtered Freshwater 1.1810 1.1142 Selenium 47217 3 Filtered Freshwater 1.9810 2.0142 Selenium 47218 3 Filtered Freshwater 2.3810 2.2558 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 30 Selenium 47219 3 Reagent Water 1.0000 1.1618 Selenium 47220 3 Reagent Water 1.2000 1.3055 Selenium 46594 4 Reagent Water 0.0000  0.0010 Selenium 46595 4 Reagent Water 0.0000 0.0100 Selenium 46596 4 Reagent Water 100.0000 106.7670 Selenium 46597 4 Reagent Water 100.0000 106.0850 Selenium 46598 4 Reagent Water 20.0000 21.1320 Selenium 46599 4 Reagent Water 20.0000 21.1440 Selenium 46600 4 Reagent Water 5.0000 5.0620 Selenium 46601 4 Reagent Water 5.0000 4.9660 Selenium 46602 4 Filtered Freshwater 4.0000 3.7410 Selenium 46603 4 Filtered Freshwater 4.0000 3.7900 Selenium 46604 4 Filtered Effluent 5.0000 6.2770 Selenium 46605 4 Filtered Effluent 5.0000 6.3980 Selenium 46606 4 Unfiltered Effluent 6.0000 7.3640 Selenium 46607 4 Unfiltered Effluent 6.0000 7.6150 Selenium 47239 4 Filtered Freshwater 0.3810 0.1020 Selenium 47240 4 Filtered Freshwater 0.3810 0.1380 Selenium 47241 4 Filtered Freshwater 0.9810 0.6450 Selenium 47242 4 Filtered Freshwater 1.1810 0.9580 Selenium 47243 4 Filtered Freshwater 1.9810 1.8240 Selenium 47244 4 Filtered Freshwater 2.3810 2.1020 Selenium 47245 4 Reagent Water 1.0000 0.8750 Selenium 47246 4 Reagent Water 1.2000 1.2170 Selenium 46532 5 Filtered Freshwater 4.0000 3.8992 Selenium 46533 5 Filtered Freshwater 4.0000 3.9011 Selenium 46534 5 Filtered Effluent 5.0000 8.0251 Selenium 46535 5 Filtered Effluent 5.0000 7.4642 Selenium 46536 5 Unfiltered Effluent 6.0000 7.9873 Selenium 46537 5 Unfiltered Effluent 6.0000 7.6959 Selenium 46538 5 Reagent Water 0.0000  0.0605 Selenium 46539 5 Reagent Water 0.0000 0.1500 Selenium 46702 5 Reagent Water 5.0000 4.5147 Selenium 46703 5 Reagent Water 5.0000 4.4402 Selenium 46704 5 Reagent Water 20.0000 17.8544 Selenium 46705 5 Reagent Water 20.0000 18.3850 Selenium 46706 5 Reagent Water 100.0000 89.2289 Concentration > cal range Selenium 46707 5 Reagent Water 100.0000 91.3304 Concentration > cal range Selenium 47223 5 Filtered Freshwater 0.3810 0.4310 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 31 Draft  December 2000 Selenium 47224 5 Filtered Freshwater 0.3810 0.0000 Selenium 47225 5 Filtered Freshwater 0.9810 1.4480 Selenium 47226 5 Filtered Freshwater 1.1810 1.4273 Selenium 47227 5 Filtered Freshwater 1.9810 2.2191 Selenium 47228 5 Filtered Freshwater 2.3810 2.6318 Selenium 47229 5 Reagent Water 1.0000 1.6423 Selenium 47230 5 Reagent Water 1.2000 1.7892 Selenium 46554 6 Filtered Effluent 5.0000 24.8955 Outlying Laboratory Selenium 46555 6 Filtered Effluent 5.0000 27.6746 Outlying Laboratory Possible contamination1 Selenium 46556 6 Filtered Freshwater 4.0000 27.4137 Outlying Laboratory Possible contamination1 Selenium 46557 6 Filtered Freshwater 4.0000 23.3279 Outlying Laboratory Selenium 46558 6 Reagent Water 0.0000 20.6772 Outlying Laboratory Selenium 46559 6 Reagent Water 0.0000 20.3840 Outlying Laboratory Selenium 46560 6 Unfiltered Effluent 6.0000 35.2663 Outlying Laboratory Possible contamination1 Selenium 46561 6 Unfiltered Effluent 6.0000 26.0733 Outlying Laboratory Selenium 46562 6 Reagent Water 5.0000 24.9791 Outlying Laboratory Selenium 46563 6 Reagent Water 5.0000 24.8939 Outlying Laboratory Possible contamination1 Selenium 46564 6 Reagent Water 20.0000 37.9875 Outlying Laboratory Possible contamination1 Selenium 46565 6 Reagent Water 20.0000 39.8635 Outlying Laboratory Possible contamination1 Selenium 46566 6 Reagent Water 100.0000 110.3332 Concentration > cal range Selenium 46567 6 Reagent Water 100.0000 110.4997 Concentration > cal range Selenium 47247 6 Filtered Freshwater 0.3810 19.7109 Outlying Laboratory Possible contamination1 Selenium 47248 6 Filtered Freshwater 0.3810 19.0204 Outlying Laboratory Possible contamination1 Selenium 47249 6 Filtered Freshwater 0.9810 20.3957 Outlying Laboratory Possible contamination1 Selenium 47250 6 Filtered Freshwater 1.1810 20.7004 Outlying Laboratory Possible contamination1 Selenium 47251 6 Filtered Freshwater 1.9810 21.1349 Outlying Laboratory Possible contamination1 Selenium 47252 6 Filtered Freshwater 2.3810 20.6159 Outlying Laboratory Possible contamination1 Selenium 47253 6 Reagent Water 1.0000 21.7354 Outlying Laboratory Possible contamination1 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 32 Selenium 47254 6 Reagent Water 1.2000 20.3721 Outlying Laboratory Possible contamination1 Selenium 46846 7 Reagent Water 0.0000 0.0101 Selenium 46847 7 Reagent Water 0.0000 0.0261 Selenium 46848 7 Reagent Water 5.0000 4.3423 Selenium 46849 7 Reagent Water 5.0000 4.1599 Selenium 46850 7 Reagent Water 20.0000 18.1392 Selenium 46851 7 Reagent Water 20.0000 18.1058 Selenium 46852 7 Reagent Water 100.0000 89.5153 Selenium 46853 7 Reagent Water 100.0000 91.3544 Selenium 46854 7 Filtered Effluent 5.0000 5.5799 Selenium 46855 7 Filtered Effluent 5.0000 5.4285 Selenium 46856 7 Filtered Freshwater 4.0000 3.4203 Selenium 46857 7 Filtered Freshwater 4.0000 3.5249 Selenium 47267 7 Unfiltered Effluent 6.0000 6.5611 Selenium 47268 7 Unfiltered Effluent 6.0000 6.5048 Selenium 47269 7 Filtered Freshwater 0.3810 0.1985 Selenium 47270 7 Filtered Freshwater 0.3810 0.2125 Selenium 47271 7 Filtered Freshwater 0.9810 0.7142 Selenium 47272 7 Filtered Freshwater 1.1810 0.8711 Selenium 47273 7 Filtered Freshwater 1.9810 1.5490 Selenium 47274 7 Filtered Freshwater 2.3810 2.0332 Selenium 47275 7 Reagent Water 1.0000 0.8322 Selenium 47276 7 Reagent Water 1.2000 0.9676 Selenium 46540 8 Filtered Effluent 5.0000 5.3906 Selenium 46541 8 Filtered Effluent 5.0000 5.7788 Selenium 46542 8 Unfiltered Effluent 6.0000 6.3760 Selenium 46543 8 Unfiltered Effluent 6.0000 6.4850 Selenium 46544 8 Reagent Water 100.0000 92.8644 Selenium 46545 8 Reagent Water 100.0000 97.3893 Selenium 46546 8 Filtered Freshwater 4.0000 3.4754 Selenium 46547 8 Filtered Freshwater 4.0000 3.6753 Selenium 46548 8 Reagent Water 0.0000 0.1219 Selenium 46549 8 Reagent Water 0.0000 0.1280 Selenium 46550 8 Reagent Water 5.0000 4.6020 Selenium 46551 8 Reagent Water 5.0000 4.9030 Selenium 46552 8 Reagent Water 20.0000 19.0698 Selenium 46553 8 Reagent Water 20.0000 18.7166 Selenium 47259 8 Filtered Freshwater 0.3810 0.2646 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 33 Draft  December 2000 Selenium 47260 8 Filtered Freshwater 0.3810 0.2360 Selenium 47261 8 Filtered Freshwater 0.9810 0.8178 Selenium 47262 8 Filtered Freshwater 1.1810 1.0490 Selenium 47263 8 Filtered Freshwater 1.9810 1.8828 Selenium 47264 8 Filtered Freshwater 2.3810 2.1701 Selenium 47265 8 Reagent Water 1.0000 1.0135 Selenium 47266 8 Reagent Water 1.2000 1.2068 Silver 46750 1 Reagent Water 0.0000 0.0000 Silver 46751 1 Reagent Water 0.0000 0.0000 Silver 46752 1 Reagent Water 0.1000 0.0000 Silver 46753 1 Reagent Water 0.1000 0.0000 Silver 46754 1 Reagent Water 1.0000 0.0370 Silver 46755 1 Reagent Water 1.0000 0.0357 Silver 46774 1 Reagent Water 10.0000 6.7900 Silver 46775 1 Reagent Water 10.0000 6.5800 Silver 46776 1 Unfiltered Effluent 2.8800 1.2000 Silver 46777 1 Unfiltered Effluent 2.8800 1.1400 Silver 46778 1 Filtered Effluent 0.4780 0.3550 Silver 46779 1 Filtered Effluent 0.4780 0.3270 Possible contamination1 Silver 46780 1 Filtered Freshwater 0.2000 0.0974 Silver 46781 1 Filtered Freshwater 0.2000 0.0934 Silver 47285 1 Filtered Freshwater 0.0000 0.0052 Silver 47286 1 Filtered Freshwater 0.0000 0.0000 Silver 47287 1 Filtered Freshwater 0.0700 0.0109 Silver 47288 1 Filtered Freshwater 0.0800 0.0221 Silver 47289 1 Filtered Freshwater 0.3000 0.0546 Silver 47290 1 Filtered Freshwater 0.3600 0.1100 Silver 47291 1 Reagent Water 0.2000 0.0000 Silver 47292 1 Reagent Water 0.2400 0.0000 Silver 46504 2 Filtered Freshwater 0.2000 0.1545 Silver 46505 2 Filtered Freshwater 0.2000 0.1189 Silver 46506 2 Filtered Effluent 0.4780 0.3787 Silver 46507 2 Filtered Effluent 0.4780 0.3816 Silver 46508 2 Unfiltered Effluent 2.8800 1.2830 Silver 46509 2 Unfiltered Effluent 2.8800 1.3120 Silver 46510 2 Reagent Water 0.0000 0.0020 Silver 46511 2 Reagent Water 0.0000  0.0009 Silver 46512 2 Reagent Water 0.1000 0.0091 Silver 46513 2 Reagent Water 0.1000 0.0038 Silver 46514 2 Reagent Water 1.0000 0.3276 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 34 Silver 46515 2 Reagent Water 1.0000 0.3034 Silver 46516 2 Reagent Water 10.0000 9.3500 Silver 46517 2 Reagent Water 10.0000 9.4880 Silver 47231 2 Filtered Freshwater 0.0000 0.0052 Silver 47232 2 Filtered Freshwater 0.0000 0.0021 Silver 47233 2 Filtered Freshwater 0.0700 0.0139 Silver 47234 2 Filtered Freshwater 0.0800 0.0269 Silver 47235 2 Filtered Freshwater 0.3000 0.0289 Silver 47236 2 Filtered Freshwater 0.3600 0.0618 Silver 47237 2 Reagent Water 0.2000 0.0347 Silver 47238 2 Reagent Water 0.2400 0.0139 Silver 46722 3 Filtered Freshwater 0.2000 0.1929 Silver 46723 3 Filtered Freshwater 0.2000 0.1901 Silver 46724 3 Filtered Effluent 0.4780 0.4471 Silver 46725 3 Filtered Effluent 0.4780 0.4172 Silver 46726 3 Unfiltered Effluent 2.8800 1.3798 Silver 46727 3 Unfiltered Effluent 2.8800 1.3991 Silver 46728 3 Reagent Water 0.0000 0.0003 Silver 46729 3 Reagent Water 0.0000 0.0010 Silver 46730 3 Reagent Water 0.1000 0.0870 Silver 46731 3 Reagent Water 0.1000 0.0908 Silver 46732 3 Reagent Water 1.0000 0.9276 Silver 46733 3 Reagent Water 1.0000 0.8484 Silver 46734 3 Reagent Water 10.0000 10.0446 Silver 46735 3 Reagent Water 10.0000 9.9293 Silver 47213 3 Filtered Freshwater 0.0000 0.0028 Silver 47214 3 Filtered Freshwater 0.0000 0.0015 Silver 47215 3 Filtered Freshwater 0.0700 0.0636 Silver 47216 3 Filtered Freshwater 0.0800 0.0640 Silver 47217 3 Filtered Freshwater 0.3000 0.2361 Silver 47218 3 Filtered Freshwater 0.3600 0.3016 Silver 47219 3 Reagent Water 0.2000 0.1611 Silver 47220 3 Reagent Water 0.2400 0.2192 Silver 46594 4 Reagent Water 0.0000 0.0050 Outlying Laboratory Silver 46595 4 Reagent Water 0.0000 0.0050 Outlying Laboratory Silver 46596 4 Reagent Water 10.0000 9.9770 Outlying Laboratory Silver 46597 4 Reagent Water 10.0000 10.1060 Outlying Laboratory Silver 46598 4 Reagent Water 1.0000 0.9000 Outlying Laboratory Silver 46599 4 Reagent Water 1.0000 0.9400 Outlying Laboratory Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 35 Draft  December 2000 Silver 46600 4 Reagent Water 0.1000 0.0970 Outlying Laboratory Silver 46601 4 Reagent Water 0.1000 0.0840 Outlying Laboratory Silver 46602 4 Filtered Freshwater 0.2000 0.1910 Outlying Laboratory Silver 46603 4 Filtered Freshwater 0.2000 0.2040 Outlying Laboratory Silver 46604 4 Filtered Effluent 0.4780 0.4720 Outlying Laboratory Silver 46605 4 Filtered Effluent 0.4780 0.5090 Outlying Laboratory Silver 46606 4 Unfiltered Effluent 2.8800 1.5160 Outlying Laboratory Silver 46607 4 Unfiltered Effluent 2.8800 1.4980 Outlying Laboratory Silver 47239 4 Filtered Freshwater 0.0000 0.0420 Outlying Laboratory Silver 47240 4 Filtered Freshwater 0.0000 0.0090 Outlying Laboratory Silver 47241 4 Filtered Freshwater 0.0700 0.0800 Outlying Laboratory Silver 47242 4 Filtered Freshwater 0.0800 0.0940 Outlying Laboratory Silver 47243 4 Filtered Freshwater 0.3000 0.2930 Outlying Laboratory Silver 47244 4 Filtered Freshwater 0.3600 0.3580 Outlying Laboratory Silver 47245 4 Reagent Water 0.2000 0.1560 Outlying Laboratory Silver 47246 4 Reagent Water 0.2400 0.2280 Outlying Laboratory Silver 46532 5 Filtered Freshwater 0.2000 0.1265 Possible contamination1 Silver 46533 5 Filtered Freshwater 0.2000 0.1113 Possible contamination1 Silver 46534 5 Filtered Effluent 0.4780 0.3230 Possible contamination1 Silver 46535 5 Filtered Effluent 0.4780 0.3182 Possible contamination1 Silver 46536 5 Unfiltered Effluent 2.8800 1.6205 Possible contamination1 Silver 46537 5 Unfiltered Effluent 2.8800 1.4659 Possible contamination1 Silver 46538 5 Reagent Water 0.0000 0.0576 Silver 46539 5 Reagent Water 0.0000 0.0540 Silver 46702 5 Reagent Water 0.1000 0.0542 Silver 46703 5 Reagent Water 0.1000 0.0515 Silver 46704 5 Reagent Water 1.0000 0.0935 Silver 46705 5 Reagent Water 1.0000 0.0713 Silver 46706 5 Reagent Water 10.0000 8.8829 Silver 46707 5 Reagent Water 10.0000 8.4280 Silver 47223 5 Filtered Freshwater 0.0000 0.0460 Silver 47224 5 Filtered Freshwater 0.0000 0.0450 Silver 47225 5 Filtered Freshwater 0.0700 0.0640 Silver 47226 5 Filtered Freshwater 0.0800 0.0671 Silver 47227 5 Filtered Freshwater 0.3000 0.0972 Silver 47228 5 Filtered Freshwater 0.3600 0.0880 Silver 47229 5 Reagent Water 0.2000 0.0510 Silver 47230 5 Reagent Water 0.2400 0.0510 Silver 46554 6 Filtered Effluent 0.4780 0.4657 Silver 46555 6 Filtered Effluent 0.4780 0.4473 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 36 Silver 46556 6 Filtered Freshwater 0.2000 0.1373 Silver 46557 6 Filtered Freshwater 0.2000 0.1275 Silver 46558 6 Reagent Water 0.0000 0.0105 Silver 46559 6 Reagent Water 0.0000 0.0078 Silver 46560 6 Unfiltered Effluent 2.8800 1.4265 Silver 46561 6 Unfiltered Effluent 2.8800 1.4569 Silver 46562 6 Reagent Water 0.1000 0.0107 Silver 46563 6 Reagent Water 0.1000 0.0082 Silver 46564 6 Reagent Water 1.0000 0.3156 Silver 46565 6 Reagent Water 1.0000 0.3295 Silver 46566 6 Reagent Water 10.0000 10.4827 Silver 46567 6 Reagent Water 10.0000 10.2625 Silver 47247 6 Filtered Freshwater 0.0000 0.0115 Silver 47248 6 Filtered Freshwater 0.0000 0.0217 Silver 47249 6 Filtered Freshwater 0.0700 0.0189 Silver 47250 6 Filtered Freshwater 0.0800 0.0178 Silver 47251 6 Filtered Freshwater 0.3000 0.0637 Silver 47252 6 Filtered Freshwater 0.3600 0.0508 Silver 47253 6 Reagent Water 0.2000 0.0879 Silver 47254 6 Reagent Water 0.2400 0.0697 Silver 46846 7 Reagent Water 0.0000 0.0096 Silver 46847 7 Reagent Water 0.0000 0.0038 Silver 46848 7 Reagent Water 0.1000 0.0019 Silver 46849 7 Reagent Water 0.1000 0.0040 Silver 46850 7 Reagent Water 1.0000 0.0061 Silver 46851 7 Reagent Water 1.0000 0.0027 Silver 46852 7 Reagent Water 10.0000 8.5905 Silver 46853 7 Reagent Water 10.0000 8.9060 Silver 46854 7 Filtered Effluent 0.4780 0.3379 Silver 46855 7 Filtered Effluent 0.4780 0.3065 Silver 46856 7 Filtered Freshwater 0.2000 0.0637 Silver 46857 7 Filtered Freshwater 0.2000 0.0646 Silver 47267 7 Unfiltered Effluent 2.8800 1.2007 Silver 47268 7 Unfiltered Effluent 2.8800 1.3045 Silver 47269 7 Filtered Freshwater 0.0000 0.0107 Silver 47270 7 Filtered Freshwater 0.0000 0.0080 Silver 47271 7 Filtered Freshwater 0.0700 0.0200 Silver 47272 7 Filtered Freshwater 0.0800 0.0261 Silver 47273 7 Filtered Freshwater 0.3000 0.0453 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 37 Draft  December 2000 Silver 47274 7 Filtered Freshwater 0.3600 0.0396 Silver 47275 7 Reagent Water 0.2000  0.0015 Silver 47276 7 Reagent Water 0.2400  0.0005 Silver 46540 8 Filtered Effluent 0.4780 0.3964 Silver 46541 8 Filtered Effluent 0.4780 0.2275 Silver 46542 8 Unfiltered Effluent 2.8800 1.0881 Silver 46543 8 Unfiltered Effluent 2.8800 1.2143 Silver 46544 8 Reagent Water 10.0000 7.7363 Silver 46545 8 Reagent Water 10.0000 7.3608 Silver 46546 8 Filtered Freshwater 0.2000 0.0826 Silver 46547 8 Filtered Freshwater 0.2000 0.0839 Silver 46548 8 Reagent Water 0.0000 0.0177 Silver 46549 8 Reagent Water 0.0000 0.0126 Silver 46550 8 Reagent Water 0.1000 0.0015 Silver 46551 8 Reagent Water 0.1000 0.0012 Silver 46552 8 Reagent Water 1.0000 0.0012 Silver 46553 8 Reagent Water 1.0000 0.0960 Silver 47259 8 Filtered Freshwater 0.0000 0.0022 Silver 47260 8 Filtered Freshwater 0.0000 0.0017 Silver 47261 8 Filtered Freshwater 0.0700 0.0142 Silver 47262 8 Filtered Freshwater 0.0800 0.0171 Silver 47263 8 Filtered Freshwater 0.3000 0.0380 Silver 47264 8 Filtered Freshwater 0.3600 0.0448 Silver 47265 8 Reagent Water 0.2000 0.0014 Silver 47266 8 Reagent Water 0.2400 0.0000 Thallium 46750 1 Reagent Water 0.0000 0.0000 Thallium 46751 1 Reagent Water 0.0000 0.0000 Thallium 46752 1 Reagent Water 0.1000 0.0838 Thallium 46753 1 Reagent Water 0.1000 0.0888 Thallium 46754 1 Reagent Water 0.5000 0.4290 Thallium 46755 1 Reagent Water 0.5000 0.4330 Thallium 46774 1 Reagent Water 2.0000 1.7600 Thallium 46775 1 Reagent Water 2.0000 1.7300 Thallium 46776 1 Unfiltered Effluent 0.9000 0.7830 Thallium 46777 1 Unfiltered Effluent 0.9000 0.7750 Thallium 46778 1 Filtered Effluent 0.2000 0.1830 Thallium 46779 1 Filtered Effluent 0.2000 0.1720 Thallium 46780 1 Filtered Freshwater 0.0600 0.0496 Thallium 46781 1 Filtered Freshwater 0.0600 0.0544 Thallium 47285 1 Filtered Freshwater 0.0010 0.0000 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 38 Thallium 47286 1 Filtered Freshwater 0.0010 0.0000 Thallium 47287 1 Filtered Freshwater 0.0210 0.0168 Thallium 47288 1 Filtered Freshwater 0.0240 0.0175 Thallium 47289 1 Filtered Freshwater 0.1010 0.0867 Thallium 47290 1 Filtered Freshwater 0.1210 0.1050 Thallium 47291 1 Reagent Water 0.0400 0.0345 Thallium 47292 1 Reagent Water 0.0500 0.0457 Thallium 46504 2 Filtered Freshwater 0.0600 0.0670 Thallium 46505 2 Filtered Freshwater 0.0600 0.0590 Thallium 46506 2 Filtered Effluent 0.2000 0.2092 Thallium 46507 2 Filtered Effluent 0.2000 0.1841 Thallium 46508 2 Unfiltered Effluent 0.9000 0.8521 Thallium 46509 2 Unfiltered Effluent 0.9000 0.9424 Thallium 46510 2 Reagent Water 0.0000 0.0012 Thallium 46511 2 Reagent Water 0.0000 0.0002 Thallium 46512 2 Reagent Water 0.1000 0.0962 Thallium 46513 2 Reagent Water 0.1000 0.0999 Thallium 46514 2 Reagent Water 0.5000 0.5734 Individual Outlier Thallium 46515 2 Reagent Water 0.5000 0.4985 Thallium 46516 2 Reagent Water 2.0000 2.0030 Thallium 46517 2 Reagent Water 2.0000 2.0140 Thallium 47231 2 Filtered Freshwater 0.0010 0.0086 Thallium 47232 2 Filtered Freshwater 0.0010 0.0012 Thallium 47233 2 Filtered Freshwater 0.0210 0.0229 Thallium 47234 2 Filtered Freshwater 0.0240 0.0305 Thallium 47235 2 Filtered Freshwater 0.1010 0.1041 Thallium 47236 2 Filtered Freshwater 0.1210 0.1190 Thallium 47237 2 Reagent Water 0.0400 0.0502 Thallium 47238 2 Reagent Water 0.0500 0.0500 Thallium 46722 3 Filtered Freshwater 0.0600 0.0620 Thallium 46723 3 Filtered Freshwater 0.0600 0.0600 Thallium 46724 3 Filtered Effluent 0.2000 0.2019 Thallium 46725 3 Filtered Effluent 0.2000 0.2119 Thallium 46726 3 Unfiltered Effluent 0.9000 0.9219 Thallium 46727 3 Unfiltered Effluent 0.9000 0.9505 Thallium 46728 3 Reagent Water 0.0000 0.0001 Thallium 46729 3 Reagent Water 0.0000 0.0002 Thallium 46730 3 Reagent Water 0.1000 0.1005 Thallium 46731 3 Reagent Water 0.1000 0.0968 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 39 Draft  December 2000 Thallium 46732 3 Reagent Water 0.5000 0.4960 Thallium 46733 3 Reagent Water 0.5000 0.5049 Thallium 46734 3 Reagent Water 2.0000 2.0253 Thallium 46735 3 Reagent Water 2.0000 2.0039 Thallium 47213 3 Filtered Freshwater 0.0010 0.0009 Thallium 47214 3 Filtered Freshwater 0.0010 0.0009 Thallium 47215 3 Filtered Freshwater 0.0210 0.0208 Thallium 47216 3 Filtered Freshwater 0.0240 0.0243 Thallium 47217 3 Filtered Freshwater 0.1010 0.1028 Thallium 47218 3 Filtered Freshwater 0.1210 0.1211 Thallium 47219 3 Reagent Water 0.0400 0.0394 Thallium 47220 3 Reagent Water 0.0500 0.0489 Thallium 46594 4 Reagent Water 0.0000 0.0010 Thallium 46595 4 Reagent Water 0.0000 0.0010 Thallium 46596 4 Reagent Water 2.0000 1.8130 Thallium 46597 4 Reagent Water 2.0000 1.8310 Thallium 46598 4 Reagent Water 0.5000 0.4510 Thallium 46599 4 Reagent Water 0.5000 0.4500 Thallium 46600 4 Reagent Water 0.1000 0.0890 Thallium 46601 4 Reagent Water 0.1000 0.0830 Thallium 46602 4 Filtered Freshwater 0.0600 0.0520 Thallium 46603 4 Filtered Freshwater 0.0600 0.0530 Thallium 46604 4 Filtered Effluent 0.2000 0.1730 Thallium 46605 4 Filtered Effluent 0.2000 0.3200 Individual Outlier Thallium 46606 4 Unfiltered Effluent 0.9000 0.7610 Thallium 46607 4 Unfiltered Effluent 0.9000 0.7680 Thallium 47239 4 Filtered Freshwater 0.0010 0.0000 Thallium 47240 4 Filtered Freshwater 0.0010 0.0010 Thallium 47241 4 Filtered Freshwater 0.0210 0.0180 Thallium 47242 4 Filtered Freshwater 0.0240 0.0200 Thallium 47243 4 Filtered Freshwater 0.1010 0.0880 Thallium 47244 4 Filtered Freshwater 0.1210 0.1050 Thallium 47245 4 Reagent Water 0.0400 0.0360 Thallium 47246 4 Reagent Water 0.0500 0.0400 Thallium 46532 5 Filtered Freshwater 0.0600 0.0551 Thallium 46533 5 Filtered Freshwater 0.0600 0.0537 Thallium 46534 5 Filtered Effluent 0.2000 0.1961 Thallium 46535 5 Filtered Effluent 0.2000 0.1948 Thallium 46536 5 Unfiltered Effluent 0.9000 1.0243 Thallium 46537 5 Unfiltered Effluent 0.9000 0.9540 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 40 Thallium 46538 5 Reagent Water 0.0000  0.0050 Thallium 46539 5 Reagent Water 0.0000  0.0056 Thallium 46702 5 Reagent Water 0.1000 0.0917 Thallium 46703 5 Reagent Water 0.1000 0.0877 Thallium 46704 5 Reagent Water 0.5000 0.4848 Thallium 46705 5 Reagent Water 0.5000 0.4820 Thallium 46706 5 Reagent Water 2.0000 2.0090 Thallium 46707 5 Reagent Water 2.0000 2.0679 Thallium 47223 5 Filtered Freshwater 0.0010 0.0000 Thallium 47224 5 Filtered Freshwater 0.0010 0.0000 Thallium 47225 5 Filtered Freshwater 0.0210 0.0131 Thallium 47226 5 Filtered Freshwater 0.0240 0.0155 Thallium 47227 5 Filtered Freshwater 0.1010 0.0977 Thallium 47228 5 Filtered Freshwater 0.1210 0.1202 Thallium 47229 5 Reagent Water 0.0400 0.0358 Thallium 47230 5 Reagent Water 0.0500 0.0387 Thallium 46554 6 Filtered Effluent 0.2000 0.2119 Thallium 46555 6 Filtered Effluent 0.2000 0.2188 Thallium 46556 6 Filtered Freshwater 0.0600 0.0680 Thallium 46557 6 Filtered Freshwater 0.0600 0.0640 Thallium 46558 6 Reagent Water 0.0000 0.0041 Thallium 46559 6 Reagent Water 0.0000 0.0039 Thallium 46560 6 Unfiltered Effluent 0.9000 0.9264 Thallium 46561 6 Unfiltered Effluent 0.9000 0.9030 Thallium 46562 6 Reagent Water 0.1000 0.1005 Thallium 46563 6 Reagent Water 0.1000 0.0966 Thallium 46564 6 Reagent Water 0.5000 0.4782 Thallium 46565 6 Reagent Water 0.5000 0.4851 Thallium 46566 6 Reagent Water 2.0000 1.9235 Thallium 46567 6 Reagent Water 2.0000 1.9254 Thallium 47247 6 Filtered Freshwater 0.0010 0.0116 Thallium 47248 6 Filtered Freshwater 0.0010 0.0080 Thallium 47249 6 Filtered Freshwater 0.0210 0.0266 Thallium 47250 6 Filtered Freshwater 0.0240 0.0269 Thallium 47251 6 Filtered Freshwater 0.1010 0.1056 Thallium 47252 6 Filtered Freshwater 0.1210 0.1229 Thallium 47253 6 Reagent Water 0.0400 0.0425 Thallium 47254 6 Reagent Water 0.0500 0.0609 Thallium 46846 7 Reagent Water 0.0000 0.0002 Outlying Laboratory Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 41 Draft  December 2000 Thallium 46847 7 Reagent Water 0.0000 0.0001 Outlying Laboratory Thallium 46848 7 Reagent Water 0.1000 0.1051 Outlying Laboratory Thallium 46849 7 Reagent Water 0.1000 0.1042 Outlying Laboratory Thallium 46850 7 Reagent Water 0.5000 0.5151 Outlying Laboratory Thallium 46851 7 Reagent Water 0.5000 0.5243 Outlying Laboratory Thallium 46852 7 Reagent Water 2.0000 2.1066 Outlying Laboratory Thallium 46853 7 Reagent Water 2.0000 2.1338 Outlying Laboratory Thallium 46854 7 Filtered Effluent 0.2000 0.2089 Outlying Laboratory Thallium 46855 7 Filtered Effluent 0.2000 0.2067 Outlying Laboratory Thallium 46856 7 Filtered Freshwater 0.0600 0.0695 Outlying Laboratory Thallium 46857 7 Filtered Freshwater 0.0600 0.0673 Outlying Laboratory Thallium 47267 7 Unfiltered Effluent 0.9000 0.9770 Outlying Laboratory Thallium 47268 7 Unfiltered Effluent 0.9000 0.9665 Outlying Laboratory Thallium 47269 7 Filtered Freshwater 0.0010 0.0013 Outlying Laboratory Thallium 47270 7 Filtered Freshwater 0.0010 0.0008 Outlying Laboratory Thallium 47271 7 Filtered Freshwater 0.0210 0.0218 Outlying Laboratory Thallium 47272 7 Filtered Freshwater 0.0240 0.0245 Outlying Laboratory Thallium 47273 7 Filtered Freshwater 0.1010 0.1050 Outlying Laboratory Thallium 47274 7 Filtered Freshwater 0.1210 0.1298 Outlying Laboratory Thallium 47275 7 Reagent Water 0.0400 0.0423 Outlying Laboratory Thallium 47276 7 Reagent Water 0.0500 0.0500 Outlying Laboratory Thallium 46540 8 Filtered Effluent 0.2000 0.1887 Thallium 46541 8 Filtered Effluent 0.2000 0.1904 Thallium 46542 8 Unfiltered Effluent 0.9000 0.8704 Thallium 46543 8 Unfiltered Effluent 0.9000 0.8559 Thallium 46544 8 Reagent Water 2.0000 1.8590 Thallium 46545 8 Reagent Water 2.0000 1.9596 Thallium 46546 8 Filtered Freshwater 0.0600 0.0611 Thallium 46547 8 Filtered Freshwater 0.0600 0.0594 Thallium 46548 8 Reagent Water 0.0000 0.0000 Thallium 46549 8 Reagent Water 0.0000 0.0000 Thallium 46550 8 Reagent Water 0.1000 0.0970 Thallium 46551 8 Reagent Water 0.1000 0.0995 Thallium 46552 8 Reagent Water 0.5000 0.4630 Thallium 46553 8 Reagent Water 0.5000 0.4665 Thallium 47259 8 Filtered Freshwater 0.0010 0.0006 Thallium 47260 8 Filtered Freshwater 0.0010 0.0000 Thallium 47261 8 Filtered Freshwater 0.0210 0.0179 Thallium 47262 8 Filtered Freshwater 0.0240 0.0206 Thallium 47263 8 Filtered Freshwater 0.1010 0.0911 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 42 Thallium 47264 8 Filtered Freshwater 0.1210 0.1097 Thallium 47265 8 Reagent Water 0.0400 0.0352 Thallium 47266 8 Reagent Water 0.0500 0.0429 Zinc 46750 1 Reagent Water 0.0000 0.0713 Zinc 46751 1 Reagent Water 0.0000 0.2800 Zinc 46752 1 Reagent Water 0.5000 0.4650 Zinc 46753 1 Reagent Water 0.5000 0.4740 Zinc 46754 1 Reagent Water 5.0000 4.4600 Zinc 46755 1 Reagent Water 5.0000 4.5800 Zinc 46774 1 Reagent Water 50.0000 43.2000 Zinc 46775 1 Reagent Water 50.0000 43.4000 Zinc 46776 1 Unfiltered Effluent 48.0100 48.5000 Zinc 46777 1 Unfiltered Effluent 48.0100 48.2000 Zinc 46778 1 Filtered Effluent 43.8250 45.8000 Zinc 46779 1 Filtered Effluent 43.8250 41.0000 Zinc 46780 1 Filtered Freshwater 1.5000 1.2800 Zinc 46781 1 Filtered Freshwater 1.5000 1.4000 Zinc 47285 1 Filtered Freshwater 0.9743 0.8690 Zinc 47286 1 Filtered Freshwater 0.9743 0.7900 Zinc 47287 1 Filtered Freshwater 1.1043 0.9050 Zinc 47288 1 Filtered Freshwater 1.3043 1.3700 Zinc 47289 1 Filtered Freshwater 1.7943 1.6300 Zinc 47290 1 Filtered Freshwater 2.1943 2.0000 Zinc 47291 1 Reagent Water 2.0000 1.8900 Zinc 47292 1 Reagent Water 2.4000 2.3600 Zinc 46504 2 Filtered Freshwater 1.5000 4.3210 Zinc 46505 2 Filtered Freshwater 1.5000 2.3680 Zinc 46506 2 Filtered Effluent 43.8250 44.3000 Zinc 46507 2 Filtered Effluent 43.8250 42.7000 Zinc 46508 2 Unfiltered Effluent 48.0100 49.4400 Zinc 46509 2 Unfiltered Effluent 48.0100 50.5500 Zinc 46510 2 Reagent Water 0.0000 0.6914 Zinc 46511 2 Reagent Water 0.0000 0.4415 Zinc 46512 2 Reagent Water 0.5000 4.0300 Zinc 46513 2 Reagent Water 0.5000 1.1550 Zinc 46514 2 Reagent Water 5.0000 6.0460 Zinc 46515 2 Reagent Water 5.0000 5.6360 Zinc 46516 2 Reagent Water 50.0000 51.0000 Zinc 46517 2 Reagent Water 50.0000 51.3700 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 43 Draft  December 2000 Zinc 47231 2 Filtered Freshwater 0.9743 1.9980 Zinc 47232 2 Filtered Freshwater 0.9743 1.3810 Zinc 47233 2 Filtered Freshwater 1.1043 1.4150 Zinc 47234 2 Filtered Freshwater 1.3043 1.8460 Zinc 47235 2 Filtered Freshwater 1.7943 2.1890 Zinc 47236 2 Filtered Freshwater 2.1943 2.5790 Zinc 47237 2 Reagent Water 2.0000 3.0660 Zinc 47238 2 Reagent Water 2.4000 2.8680 Zinc 46722 3 Filtered Freshwater 1.5000 1.5506 Zinc 46723 3 Filtered Freshwater 1.5000 1.3816 Zinc 46724 3 Filtered Effluent 43.8250 42.7116 Zinc 46725 3 Filtered Effluent 43.8250 44.2443 Zinc 46726 3 Unfiltered Effluent 48.0100 49.6040 Zinc 46727 3 Unfiltered Effluent 48.0100 49.7807 Zinc 46728 3 Reagent Water 0.0000 0.0697 Zinc 46729 3 Reagent Water 0.0000 0.1315 Zinc 46730 3 Reagent Water 0.5000 0.7130 Zinc 46731 3 Reagent Water 0.5000 0.6415 Zinc 46732 3 Reagent Water 5.0000 4.9954 Zinc 46733 3 Reagent Water 5.0000 5.8975 Zinc 46734 3 Reagent Water 50.0000 52.5187 Zinc 46735 3 Reagent Water 50.0000 51.9073 Zinc 47213 3 Filtered Freshwater 0.9743 1.0036 Zinc 47214 3 Filtered Freshwater 0.9743 0.9580 Zinc 47215 3 Filtered Freshwater 1.1043 0.9369 Zinc 47216 3 Filtered Freshwater 1.3043 1.1144 Zinc 47217 3 Filtered Freshwater 1.7943 2.0570 Zinc 47218 3 Filtered Freshwater 2.1943 2.0747 Zinc 47219 3 Reagent Water 2.0000 2.1609 Zinc 47220 3 Reagent Water 2.4000 2.6430 Zinc 46594 4 Reagent Water 0.0000  0.2020 Zinc 46595 4 Reagent Water 0.0000  0.2190 Zinc 46596 4 Reagent Water 50.0000 50.4520 Zinc 46597 4 Reagent Water 50.0000 50.7220 Zinc 46598 4 Reagent Water 5.0000 4.9730 Zinc 46599 4 Reagent Water 5.0000 4.9380 Zinc 46600 4 Reagent Water 0.5000 0.2510 Zinc 46601 4 Reagent Water 0.5000 0.2380 Zinc 46602 4 Filtered Freshwater 1.5000 1.4320 Possible contamination1 Zinc 46603 4 Filtered Freshwater 1.5000 1.1660 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 44 Zinc 46604 4 Filtered Effluent 43.8250 44.9860 Zinc 46605 4 Filtered Effluent 43.8250 45.2430 Zinc 46606 4 Unfiltered Effluent 48.0100 50.6250 Zinc 46607 4 Unfiltered Effluent 48.0100 52.3870 Zinc 47239 4 Filtered Freshwater 0.9743 0.5140 Zinc 47240 4 Filtered Freshwater 0.9743 0.4470 Zinc 47241 4 Filtered Freshwater 1.1043 0.6370 Zinc 47242 4 Filtered Freshwater 1.3043 0.9220 Zinc 47243 4 Filtered Freshwater 1.7943 1.6130 Zinc 47244 4 Filtered Freshwater 2.1943 1.8390 Zinc 47245 4 Reagent Water 2.0000 3.2120 Zinc 47246 4 Reagent Water 2.4000 2.0620 Zinc 46532 5 Filtered Freshwater 1.5000 3.5617 Outlying Laboratory Possible contamination1 Zinc 46533 5 Filtered Freshwater 1.5000 14.3135 Outlying Laboratory Possible contamination1 Zinc 46534 5 Filtered Effluent 43.8250 60.3392 Outlying Laboratory Possible contamination1 Zinc 46535 5 Filtered Effluent 43.8250 40.1084 Concentration > cal range Zinc 46536 5 Unfiltered Effluent 48.0100 59.7132 Concentration > cal range Zinc 46537 5 Unfiltered Effluent 48.0100 53.4459 Concentration > cal range Zinc 46538 5 Reagent Water 0.0000 1.7024 Outlying Laboratory Possible contamination1 Zinc 46539 5 Reagent Water 0.0000 4.5007 Outlying Laboratory Possible contamination1 Zinc 46702 5 Reagent Water 0.5000 2.1957 Outlying Laboratory Possible contamination1 Zinc 46703 5 Reagent Water 0.5000 3.4642 Outlying Laboratory Possible contamination1 Zinc 46704 5 Reagent Water 5.0000 5.7298 Outlying Laboratory Possible contamination1 Zinc 46705 5 Reagent Water 5.0000 6.3932 Outlying Laboratory Possible contamination1 Zinc 46706 5 Reagent Water 50.0000 47.7843 Concentration > cal range Zinc 46707 5 Reagent Water 50.0000 48.1602 Concentration > cal range Zinc 47223 5 Filtered Freshwater 0.9743 19.9924 Outlying Laboratory Possible contamination1 Zinc 47224 5 Filtered Freshwater 0.9743 2.6400 Outlying Laboratory Possible contamination1 Zinc 47225 5 Filtered Freshwater 1.1043 2.2861 Outlying Laboratory Possible contamination1 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment B 45 Draft  December 2000 Zinc 47226 5 Filtered Freshwater 1.3043 2.8336 Outlying Laboratory Possible contamination1 Zinc 47227 5 Filtered Freshwater 1.7943 3.3408 Outlying Laboratory Possible contamination1 Zinc 47228 5 Filtered Freshwater 2.1943 3.6014 Outlying Laboratory Possible contamination1 Zinc 47229 5 Reagent Water 2.0000 3.7071 Outlying Laboratory Possible contamination1 Zinc 47230 5 Reagent Water 2.4000 4.2327 Outlying Laboratory Possible contamination1 Zinc 46554 6 Filtered Effluent 43.8250 43.3113 Zinc 46555 6 Filtered Effluent 43.8250 47.8295 Zinc 46556 6 Filtered Freshwater 1.5000 2.1583 Zinc 46557 6 Filtered Freshwater 1.5000 1.5672 Zinc 46558 6 Reagent Water 0.0000 0.2636 Zinc 46559 6 Reagent Water 0.0000 0.4230 Zinc 46560 6 Unfiltered Effluent 48.0100 62.0914 Individual Outlier Zinc 46561 6 Unfiltered Effluent 48.0100 48.8716 Zinc 46562 6 Reagent Water 0.5000 0.7293 Zinc 46563 6 Reagent Water 0.5000 0.8695 Zinc 46564 6 Reagent Water 5.0000 4.8052 Zinc 46565 6 Reagent Water 5.0000 6.4784 Zinc 46566 6 Reagent Water 50.0000 45.8536 Zinc 46567 6 Reagent Water 50.0000 59.8960 Zinc 47247 6 Filtered Freshwater 0.9743 1.0932 Zinc 47248 6 Filtered Freshwater 0.9743 1.6887 Zinc 47249 6 Filtered Freshwater 1.1043 1.1470 Zinc 47250 6 Filtered Freshwater 1.3043 1.4080 Zinc 47251 6 Filtered Freshwater 1.7943 1.8281 Zinc 47252 6 Filtered Freshwater 2.1943 2.2378 Zinc 47253 6 Reagent Water 2.0000 2.1349 Zinc 47254 6 Reagent Water 2.4000 2.7856 Zinc 46846 7 Reagent Water 0.0000  0.0374 Zinc 46847 7 Reagent Water 0.0000  0.0397 Zinc 46848 7 Reagent Water 0.5000 0.4118 Zinc 46849 7 Reagent Water 0.5000 0.4133 Zinc 46850 7 Reagent Water 5.0000 4.6699 Zinc 46851 7 Reagent Water 5.0000 4.5940 Zinc 46852 7 Reagent Water 50.0000 46.6399 Zinc 46853 7 Reagent Water 50.0000 46.6981 Zinc 46854 7 Filtered Effluent 43.8250 42.9109 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 2. Field Sample Results Analyte Sample Number Lab Matrix Expected Concentration ( µ g/ L) Amount Comment Draft  December 2000 B 46 Zinc 46855 7 Filtered Effluent 43.8250 42.8596 Zinc 46856 7 Filtered Freshwater 1.5000 1.3056 Zinc 46857 7 Filtered Freshwater 1.5000 1.2636 Zinc 47267 7 Unfiltered Effluent 48.0100 45.5374 Zinc 47268 7 Unfiltered Effluent 48.0100 46.2510 Zinc 47269 7 Filtered Freshwater 0.9743 0.7638 Zinc 47270 7 Filtered Freshwater 0.9743 0.7708 Zinc 47271 7 Filtered Freshwater 1.1043 0.8760 Zinc 47272 7 Filtered Freshwater 1.3043 1.0735 Zinc 47273 7 Filtered Freshwater 1.7943 1.4933 Zinc 47274 7 Filtered Freshwater 2.1943 1.8992 Zinc 47275 7 Reagent Water 2.0000 1.7942 Zinc 47276 7 Reagent Water 2.4000 2.1073 Zinc 46540 8 Filtered Effluent 43.8250 42.8472 Zinc 46541 8 Filtered Effluent 43.8250 45.3330 Zinc 46542 8 Unfiltered Effluent 48.0100 49.5120 Zinc 46543 8 Unfiltered Effluent 48.0100 48.7990 Zinc 46544 8 Reagent Water 50.0000 44.7807 Zinc 46545 8 Reagent Water 50.0000 50.4607 Zinc 46546 8 Filtered Freshwater 1.5000 4.6312 Possible contamination2 Zinc 46547 8 Filtered Freshwater 1.5000 3.8415 Possible contamination2 Zinc 46548 8 Reagent Water 0.0000 1.1251 Possible contamination1 Zinc 46549 8 Reagent Water 0.0000 0.9461 Zinc 46550 8 Reagent Water 0.5000 0.6587 Zinc 46551 8 Reagent Water 0.5000 1.0679 Possible contamination1 Zinc 46552 8 Reagent Water 5.0000 4.4630 Possible contamination2 Zinc 46553 8 Reagent Water 5.0000 4.4245 Possible contamination2 Zinc 47259 8 Filtered Freshwater 0.9743 0.6552 Zinc 47260 8 Filtered Freshwater 0.9743 0.8136 Zinc 47261 8 Filtered Freshwater 1.1043 1.0597 Possible contamination1 Zinc 47262 8 Filtered Freshwater 1.3043 1.1635 Possible contamination1 Zinc 47263 8 Filtered Freshwater 1.7943 1.3807 Possible contamination1 Zinc 47264 8 Filtered Freshwater 2.1943 1.7278 Possible contamination1 Zinc 47265 8 Reagent Water 2.0000 1.6577 Possible contamination1 Zinc 47266 8 Reagent Water 2.4000 2.0357 Possible contamination1 1Sample result is less than five times an associated blank result that is higher than the revised MDL. 2Sample result is between five and ten times an associated blank result that is higher than the revised MDL. Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B B 47 Draft  December 2000 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Draft  December 2000 B 48 Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments Sb 46504 2 Freshwater 0.50000 0.66600 0.67510 Sb 46507 2 Filtered Effluent 5.00000 5.36800 5.30200 Sb 46508 2 Unfiltered Effluent 30.00000 38.40000 39.28000 Sb 46533 5 Freshwater 0.06000 0.18800 0.16100 Incorrect spiking level Sb 46534 5 Filtered Effluent 1.20000 NR NR Sb 46537 5 Unfiltered Effluent 0.20000 10.00490 10.02850 Sample > high std, Incorrect spiking level Sb 46540 8 Filtered Effluent 4.00000 5.32460 5.43900 Sb 46543 8 Unfiltered Effluent 8.00000 18.23900 18.37400 Incorrect spiking level Sb 46544 8 Reagent Water 50.00000 73.05000 77.47500 Sample > high std Sb 46547 8 Freshwater 1.00000 0.9904 1.12970 Incorrect spiking level Sb 46552 8 Reagent Water 5.00000 8.81430 9.09030 Sb 46555 6 Filtered Effluent 5.06600 6.16310 NR Sb 46556 6 Freshwater 0.50100 0.66650 NR Sb 46560 6 Unfiltered Effluent 50.37300 60.80580 NR Incorrect spiking level Sb 46602 4 Freshwater 30.00000 27.49600 28.52000 Incorrect spiking level Sb 46605 4 Filtered Effluent 30.00000 29.35700 29.53900 Incorrect spiking level Sb 46606 4 Unfiltered Effluent 40.00000 46.69000 46.37200 Sb 46722 3 Freshwater 0.25000 0.41516 0.40604 Sb 46724 3 Filtered Effluent 0.83300 1.81551 1.76042 Incorrect spiking level Sb 46726 3 Unfiltered Effluent 15.00000 22.05490 22.12027 Sample > high std Sb 46776 1 Unfiltered Effluent 25.00000 37.10000 37.30000 Sb 46779 1 Filtered Effluent 1.00000 2.08000 2.15000 Sb 46780 1 Freshwater 1.00000 1.26000 1.25000 Incorrect spiking level Sb 46855 7 Filtered Effluent 5.00000 6.78910 6.20430 Sb 46856 7 Freshwater 5.00000 5.22960 5.22980 Incorrect spiking level Sb 47213 3 Freshwater 0.25000 0.48044 0.48619 Sb 47223 5 Freshwater 0.06000 0.24946 0.25177 Incorrect spiking level Sb 47231 2 Freshwater 1.00000 1.21400 1.23700 Sb 47239 4 Freshwater 30.00000 28.23400 28.61700 Incorrect spiking level Sb 47268 7 Unfiltered Effluent 5.00000 15.26020 15.22170 Incorrect spiking level Cd 46504 2 Freshwater 1.00000 1.31200 1.37200 Cd 46507 2 Filtered Effluent 0.90000 1.23300 1.27200 Cd 46508 2 Unfiltered Effluent 1.00000 1.36200 1.55900 Cd 46533 5 Freshwater 0.30000 0.59849 0.61586 Incorrect spiking level Cd 46534 5 Filtered Effluent 0.30000 0.70712 0.65900 Incorrect spiking level Cd 46537 5 Unfiltered Effluent 1.00000 1.36099 1.12498 Cd 46540 8 Filtered Effluent 1.00000 1.25810 1.26240 Cd 46543 8 Unfiltered Effluent 2.00000 2.32460 2.34800 Cd 46544 8 Reagent Water 50.00000 59.74590 61.94750 Incorrect spiking level Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments B 49 Draft  December 2000 Cd 46547 8 Freshwater 0.25000 0.47980 0.47800 Cd 46552 8 Reagent Water 1.25000 2.12950 2.17620 Cd 46555 6 Filtered Effluent 2.07300 2.76780 NR Incorrect spiking level Cd 46556 6 Freshwater 2.03800 2.60300 NR Incorrect spiking level Cd 46560 6 Unfiltered Effluent 4.00500 5.16080 NR Incorrect spiking level Cd 46602 4 Freshwater 30.00000 31.03900 31.28600 Incorrect spiking level Cd 46605 4 Filtered Effluent 30.00000 30.37900 30.20400 Incorrect spiking level Cd 46606 4 Unfiltered Effluent 2.00000 2.42200 2.47400 Incorrect spiking level Cd 46722 3 Freshwater 0.25000 0.47483 0.47955 Cd 46724 3 Filtered Effluent 0.83300 1.11517 1.09906 Cd 46726 3 Unfiltered Effluent 1.66700 2.13707 2.12629 Cd 46776 1 Unfiltered Effluent 1.00000 1.56000 1.50000 Cd 46779 1 Filtered Effluent 1.00000 1.28000 1.28000 Cd 46780 1 Freshwater 1.00000 1.27000 1.23000 Incorrect spiking level Cd 46855 7 Filtered Effluent 5.00000 5.16680 5.19450 Incorrect spiking level Cd 46856 7 Freshwater 5.00000 5.37660 5.31360 Incorrect spiking level Cd 47213 3 Freshwater 0.25000 0.26045 0.26184 Cd 47223 5 Freshwater 0.30000 0.34679 0.34020 Cd 47231 2 Freshwater 3.00000 2.73800 2.68300 Incorrect spiking level Cd 47239 4 Freshwater 30.00000 30.79800 31.05500 Incorrect spiking level Cd 47268 7 Unfiltered Effluent 5.00000 5.44840 5.46780 Incorrect spiking level Cu 46504 2 Freshwater 20.00000 30.60000 30.08000 Cu 46507 2 Filtered Effluent 50.00000 67.45000 66.04000 Sample > high std Cu 46508 2 Unfiltered Effluent 50.00000 68.38000 69.03000 Cu 46533 5 Freshwater 30.00000 36.20700 30.39800 Cu 46534 5 Filtered Effluent 0.60000 NR NR Cu 46537 5 Unfiltered Effluent 2.00000 21.13220 19.24933 Incorrect spiking level, Possible contamination1 Cu 46540 8 Filtered Effluent 21.00000 32.06890 31.11890 Cu 46543 8 Unfiltered Effluent 22.00000 33.58530 34.17510 Cu 46544 8 Reagent Water 50.00000 63.83030 68.14100 Sample > high std Cu 46547 8 Freshwater 0.25000 1.26160 1.28250 Incorrect spiking level Cu 46552 8 Reagent Water 1.25000 2.95670 3.00510 Incorrect spiking level Cu 46555 6 Filtered Effluent 50.36800 58.83320 NR Cu 46556 6 Freshwater 5.04000 5.96880 NR Cu 46560 6 Unfiltered Effluent 45.34700 57.15260 NR Cu 46602 4 Freshwater 30.00000 31.87400 31.93400 Incorrect spiking level Cu 46605 4 Filtered Effluent 30.00000 46.58600 46.03500 Cu 46606 4 Unfiltered Effluent 80.00000 98.74500 97.71000 Cu 46722 3 Freshwater 5.00000 4.92250 5.04088 Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments Draft  December 2000 B 50 Cu 46724 3 Filtered Effluent 15.00000 29.47470 29.33254 Cu 46726 3 Unfiltered Effluent 15.00000 30.40590 29.97278 Sample > high std, Incorrect spiking level Cu 46776 1 Unfiltered Effluent 25.00000 38.50000 38.10000 Cu 46779 1 Filtered Effluent 25.00000 36.20000 36.30000 Cu 46780 1 Freshwater 1.00000 2.01000 1.96000 Cu 46855 7 Filtered Effluent 5.00000 19.49870 19.33470 Incorrect spiking level Cu 46856 7 Freshwater 5.00000 5.55870 5.61690 Cu 47213 3 Freshwater 4.00000 5.14713 5.10406 Sample > high std Cu 47223 5 Freshwater 0.60000 2.11824 2.12930 Incorrect spiking level Cu 47231 2 Freshwater 5.00000 6.65700 6.69100 Cu 47239 4 Freshwater 30.00000 32.37900 32.06900 Incorrect spiking level Cu 47268 7 Unfiltered Effluent 5.00000 19.84730 20.04080 Incorrect spiking level Pb 46504 2 Freshwater 1.50000 1.83300 1.85900 Pb 46507 2 Filtered Effluent 6.00000 6.31900 6.43700 Incorrect spiking level Pb 46508 2 Unfiltered Effluent 5.00000 5.83600 6.00100 Pb 46533 5 Freshwater 0.15000 0.36858 0.36114 Incorrect spiking level Pb 46534 5 Filtered Effluent 0.15000 0.72938 0.73001 Incorrect spiking level Pb 46537 5 Unfiltered Effluent 0.50000 2.68804 2.03289 Incorrect spiking level, Possible contamination1 Pb 46540 8 Filtered Effluent 1.00000 1.65550 1.62380 Pb 46543 8 Unfiltered Effluent 2.00000 3.08900 3.11640 Pb 46544 8 Reagent Water 50.00000 53.86860 57.38300 Sample > high std, Incorrect spiking level Pb 46547 8 Freshwater 0.25000 0.48220 0.49970 Pb 46552 8 Reagent Water 1.25000 1.74170 1.75740 Pb 46555 6 Filtered Effluent 2.61300 3.56030 NR Pb 46556 6 Freshwater 1.04100 1.40000 NR Pb 46560 6 Unfiltered Effluent 5.04300 6.72090 NR Pb 46602 4 Freshwater 30.00000 30.33200 30.48700 Incorrect spiking level Pb 46605 4 Filtered Effluent 30.00000 29.48200 29.42900 Incorrect spiking level Pb 46606 4 Unfiltered Effluent 5.00000 6.02200 5.90100 Pb 46722 3 Freshwater 0.25000 0.47231 0.47460 Pb 46724 3 Filtered Effluent 0.83300 1.43216 1.42094 Pb 46726 3 Unfiltered Effluent 1.66700 2.96845 2.84953 Pb 46776 1 Unfiltered Effluent 1.00000 1.96000 1.98000 Pb 46779 1 Filtered Effluent 1.00000 1.45000 1.48000 Pb 46780 1 Freshwater 1.00000 1.18000 1.18000 Incorrect spiking level Pb 46855 7 Filtered Effluent 5.00000 5.30240 5.33680 Incorrect spiking level Pb 46856 7 Freshwater 5.00000 5.13580 5.15180 Incorrect spiking level Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments B 51 Draft  December 2000 Pb 47213 3 Freshwater 0.25000 0.29194 0.29363 Pb 47223 5 Freshwater 0.15000 0.20901 0.20639 Pb 47231 2 Freshwater 1.50000 1.40300 1.39900 Incorrect spiking level Pb 47239 4 Freshwater 30.00000 29.93000 30.31800 Incorrect spiking level Pb 47268 7 Unfiltered Effluent 5.00000 4.68640 4.74020 Incorrect spiking level Ni 46504 2 Freshwater 20.00000 26.07000 26.51000 Ni 46507 2 Filtered Effluent 20.00000 25.80000 25.25000 Ni 46508 2 Unfiltered Effluent 20.00000 27.98000 28.34000 Ni 46533 5 Freshwater 3.00000 8.78263 8.90238 Incorrect spiking level Ni 46534 5 Filtered Effluent 3.00000 9.46807 9.50236 Incorrect spiking level Ni 46537 5 Unfiltered Effluent 10.00000 13.90000 13.20000 Ni 46540 8 Filtered Effluent 11.00000 17.08750 16.70990 Ni 46543 8 Unfiltered Effluent 12.00000 18.42300 18.39400 Ni 46544 8 Reagent Water 50.00000 140.55300 144.31170 Sample > high std, Incorrect spiking level Ni 46547 8 Freshwater 5.25000 10.96610 11.05030 Incorrect spiking level Ni 46552 8 Reagent Water 11.25000 20.22080 20.41270 Ni 46555 6 Filtered Effluent 40.66500 41.73010 NR Incorrect spiking level Ni 46556 6 Freshwater 39.41600 41.85090 NR Incorrect spiking level Ni 46560 6 Unfiltered Effluent 36.17900 41.05830 NR Incorrect spiking level Ni 46602 4 Freshwater 30.00000 34.88600 35.44400 Ni 46605 4 Filtered Effluent 30.00000 35.11100 33.58600 Ni 46606 4 Unfiltered Effluent 40.00000 47.98000 48.01700 Ni 46722 3 Freshwater 10.00000 14.94980 15.18900 Ni 46724 3 Filtered Effluent 10.00000 14.47040 14.53703 Ni 46726 3 Unfiltered Effluent 10.00000 15.35150 14.90455 Sample > high std Ni 46776 1 Unfiltered Effluent 25.00000 31.00000 30.70000 Ni 46779 1 Filtered Effluent 25.00000 30.00000 29.80000 Ni 46780 1 Freshwater 11.00000 16.50000 16.20000 Ni 46855 7 Filtered Effluent 5.00000 11.78900 11.62450 Incorrect spiking level Ni 46856 7 Freshwater 5.00000 10.15630 10.22660 Incorrect spiking level Ni 47213 3 Freshwater 4.00000 4.09522 4.11498 Ni 47223 5 Freshwater 3.00000 3.63898 3.65862 Ni 47231 2 Freshwater 3.00000 3.70900 3.81300 Ni 47239 4 Freshwater 30.00000 29.25600 30.04200 Incorrect spiking level Ni 47268 7 Unfiltered Effluent 5.00000 11.94710 12.05380 Incorrect spiking level Se 46504 2 Freshwater 20.00000 24.88000 24.28000 Incorrect spiking level Se 46507 2 Filtered Effluent 30.00000 37.96000 37.76000 Se 46508 2 Unfiltered Effluent 30.00000 39.92000 37.91000 Se 46533 5 Freshwater 3.00000 6.89461 6.26332 Incorrect spiking level Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments Draft  December 2000 B 52 Se 46534 5 Filtered Effluent 3.00000 10.08730 9.86675 Incorrect spiking level Se 46537 5 Unfiltered Effluent 10.00000 12.17660 10.83706 Se 46540 8 Filtered Effluent 20.00000 24.88270 24.98520 Se 46543 8 Unfiltered Effluent 40.00000 42.94000 43.62500 Incorrect spiking level Se 46544 8 Reagent Water 50.00000 145.28700 150.13680 Incorrect spiking level Se 46547 8 Freshwater 5.00000 8.72800 8.89340 Se 46552 8 Reagent Water 25.00000 43.70890 43.57400 Se 46555 6 Filtered Effluent 40.21700 70.50910 NR Se 46556 6 Freshwater 19.59000 42.25390 NR Incorrect spiking level Se 46560 Unfiltered Effluent 49.96700 78.79980 NR Se 46602 4 Freshwater 30.00000 33.78100 34.82000 Incorrect spiking level Se 46605 4 Filtered Effluent 30.00000 37.09100 36.45200 Se 46606 4 Unfiltered Effluent 40.00000 49.42100 48.49200 Incorrect spiking level Se 46722 3 Freshwater 5.00000 9.27212 9.30843 Se 46724 3 Filtered Effluent 16.66700 25.08210 24.56035 Se 46726 3 Unfiltered Effluent 33.33300 46.75420 44.56386 Se 46776 1 Unfiltered Effluent 25.00000 37.80000 36.80000 Se 46779 1 Filtered Effluent 25.00000 33.10000 34.10000 Se 46780 1 Freshwater 11.00000 16.80000 18.00000 Se 46855 7 Filtered Effluent 5.00000 10.75750 10.19860 Incorrect spiking level Se 46856 7 Freshwater 5.00000 8.00300 7.87230 Se 47213 3 Freshwater 5.00000 5.82826 5.85295 Se 47223 5 Freshwater 3.00000 2.61802 2.66777 Se 47231 2 Freshwater 20.00000 18.19000 19.86000 Incorrect spiking level Se 47239 4 Freshwater 30.00000 31.62400 31.20600 Incorrect spiking level Se 47268 7 Unfiltered Effluent 5.00000 11.12110 11.39860 Incorrect spiking level Ag 46504 2 Freshwater 0.50000 0.57790 0.60240 Ag 46507 2 Filtered Effluent 1.50000 1.68100 1.74700 Ag 46508 2 Unfiltered Effluent 5.00000 6.09200 6.05800 Ag 46533 5 Freshwater 0.30000 0.42385 0.41300 Ag 46534 5 Filtered Effluent 0.30000 0.58482 0.59225 Incorrect spiking level Ag 46537 5 Unfiltered Effluent 1.00000 2.05768 2.06904 Incorrect spiking level Ag 46540 8 Filtered Effluent 1.00000 1.28370 1.33170 Ag 46543 8 Unfiltered Effluent 2.00000 2.98640 3.03120 Ag 46544 8 Reagent Water 50.00000 57.92000 57.33130 Sample > high std, Incorrect spiking level Ag 46547 8 Freshwater 0.25000 0.34080 0.39010 Ag 46552 8 Reagent Water 1.25000 1.26840 1.24430 Incorrect spiking level Ag 46555 6 Filtered Effluent 2.03700 2.67120 NR Ag 46556 6 Freshwater 4.96300 5.71270 NR Incorrect spiking level Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments B 53 Draft  December 2000 Ag 46560 6 Unfiltered Effluent 4.97400 6.77840 NR Ag 46602 4 Freshwater 30.00000 31.95000 32.32000 Incorrect spiking level Ag 46605 4 Filtered Effluent 30.00000 31.81000 31.95500 Incorrect spiking level Ag 46606 4 Unfiltered Effluent 1.00000 2.54300 2.51400 Incorrect spiking level Ag 46722 3 Freshwater 0.25000 0.43178 0.42855 Ag 46724 3 Filtered Effluent 0.83300 1.20005 1.18966 Ag 46726 3 Unfiltered Effluent 1.66700 2.85547 2.80148 Ag 46776 1 Unfiltered Effluent 1.00000 2.15000 2.17000 Ag 46779 1 Filtered Effluent 1.00000 1.17000 1.23000 Ag 46780 1 Freshwater 1.00000 1.10000 1.08000 Incorrect spiking level Ag 46855 7 Filtered Effluent 5.00000 5.15150 5.16810 Incorrect spiking level Ag 46856 7 Freshwater 5.00000 5.04890 5.06850 Incorrect spiking level Ag 47213 3 Freshwater 0.25000 0.24888 0.25035 Ag 47223 5 Freshwater 0.30000 0.36322 0.35513 Ag 47231 2 Freshwater 3.00000 2.68400 2.71400 Incorrect spiking level Ag 47239 4 Freshwater 30.00000 32.20000 32.17000 Incorrect spiking level Ag 47268 7 Unfiltered Effluent 5.00000 6.19960 6.21590 Tl 46504 2 Freshwater 0.30000 0.36230 0.38350 Tl 46507 2 Filtered Effluent 1.00000 1.25200 1.23200 Incorrect spiking level Tl 46508 2 Unfiltered Effluent 4.00000 5.13800 5.11300 Tl 46533 5 Freshwater 0.06000 0.13174 0.12431 Tl 46534 5 Filtered Effluent 0.06000 0.27980 0.27765 Incorrect spiking level Tl 46537 5 Unfiltered Effluent 0.20000 1.12679 1.06809 Incorrect spiking level Tl 46540 8 Filtered Effluent 0.40000 0.61770 0.59670 Tl 46543 8 Unfiltered Effluent 0.80000 1.63210 1.67530 Incorrect spiking level Tl 46544 8 Reagent Water 50.00000 48.86510 52.97590 Sample > high std, Incorrect spiking level Tl 46547 8 Freshwater 0.10000 0.16930 0.17060 Tl 46552 8 Reagent Water 0.50000 0.97730 0.99430 Tl 46555 6 Filtered Effluent 1.01700 1.39560 NR Tl 46556 6 Freshwater 0.25200 0.36340 NR Tl 46560 6 Unfiltered Effluent 5.02700 6.67280 NR Incorrect spiking level Tl 46602 4 Freshwater 30.00000 26.97500 27.00900 Incorrect spiking level Tl 46605 4 Filtered Effluent 30.00000 25.45500 25.86600 Incorrect spiking level Tl 46606 4 Unfiltered Effluent 4.00000 4.37400 4.35800 Incorrect spiking level Tl 46722 3 Freshwater 0.25000 0.31796 0.32170 Tl 46724 3 Filtered Effluent 0.83300 1.11400 1.11939 Tl 46726 3 Unfiltered Effluent 1.66700 2.57114 2.65728 Tl 46776 1 Unfiltered Effluent 1.00000 1.81000 1.82000 Tl 46779 1 Filtered Effluent 1.00000 1.16000 1.15000 Incorrect spiking level Results of the Interlaboratory Validation Study of EPA Method 1638 Appendix B Table 3: Matrix Spike ( MS) and Matrix Spike Duplicate ( MSD) Results Analyte Field Sample Number Lab Matrix Water Spike Level ( µ g/ L) MS Amount ( µ g/ L) MSD Amount ( µ g/ L) Comments Draft  December 2000 B 54 Tl 46780 1 Freshwater 1.00000 1.10000 1.07000 Incorrect spiking level Tl 46855 7 Filtered Effluent 5.00000 5.56780 5.55920 Incorrect spiking level Tl 46856 7 Freshwater 5.00000 5.40260 5.43650 Incorrect spiking level Tl 47213 3 Freshwater 0.25000 0.25262 0.26162 Incorrect spiking level Tl 47223 5 Freshwater 0.06000 0.06604 0.07559 Tl 47231 2 Freshwater 0.60000 0.56500 0.53640 Incorrect spiking level Tl 47239 4 Freshwater 30.00000 26.43400 27.03200 Incorrect spiking level Tl 47268 7 Unfiltered Effluent 5.00000 6.42950 6.41260 Incorrect spiking level Zn 46504 2 Freshwater 10 13.4 13.95 Zn 46507 2 Filtered Effluent 200 255.6 257.5 Zn 46508 2 Unfiltered Effluent 100 162.6 163.3 Zn 46533 5 Freshwater 75 80.414 75.911 Incorrect spiking level Zn 46534 5 Filtered Effluent 75 114.657 120.643 Zn 46537 5 Unfiltered Effluent 5 61.9461 54.91673 Incorrect spiking level Zn 46540 8 Filtered Effluent 54 89.9293 89.6455 Zn 46543 8 Unfiltered Effluent 58 95.062 96.355 Possible contamination1 Zn 46544 8 Reagent Water 50 93.8834 98.25 Zn 46547 8 Freshwater 1 5.4825 4.9435 Incorrect spiking level Zn 46552 8 Reagent Water 5 9.408 9.3926 Zn 46555 6 Filtered Effluent 101.182 145.687 NR Zn 46556 6 Freshwater 9.956 12.0011 NR Zn 46560 6 Unfiltered Effluent 90.389 150.34 NR Zn 46602 4 Freshwater 30 31.501 31.551 Incorrect spiking level Zn 46605 4 Filtered Effluent 30 74.413 73.988 Incorrect spiking level Zn 46606 4 Unfiltered Effluent 100 147.955 148.982 Zn 46722 3 Freshwater 2.5 3.51249 3.48278 Zn 46724 3 Filtered Effluent 100 142.046 138.908 Zn 46726 3 Unfiltered Effluent 100 144.966 142.37 Zn 46776 1 Unfiltered Effluent 50 95.7 95.4 Sample > high std Zn 46779 1 Filtered Effluent 50 88.2 88 Sample > high std Zn 46780 1 Freshwater 11 12 11.7 Incorrect spiking level Zn 46855 7 Filtered Effluent 5 48.0539 47.8124 Incorrect spiking level Zn 46856 7 Freshwater 5 5.8806 5.8837 Zn 47213 3 Freshwater 2.5 3.64438 3.13855 Zn 47223 5 Freshwater 75 77.844 63.122 Zn 47231 2 Freshwater 5 7.016 7.175 Zn 47239 4 Freshwater 30 30.892 31.204 Incorrect spiking level Zn 47268 7 Unfiltered Effluent 5 51.0495 51.5702 Incorrect spiking level 1 Results may be elevated due to contamination noted in the accompanying QC samples B 55 Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 Antimony 1 IPR 0.05 0.060 0.059 0.067 0.073

OPR 0.05 0.1321 0.036

Antimony 2 OPR 0.06 0.048 0.068

IPR 0.23 0.213 0.204 0.227 0.221

OPR 0.23 0.241 0.216 0.197 0.180 0.178 0.187 0.197 0.193

Antimony 3 IPR 0.1 0.112 0.108 0.113 0.108

OPR 0.1 0.109 0.111 0.113

Antimony 4 IPR 0.06 0.072 0.087 0.087 0.074 0.064 0.065 0.074 0.068 0.108 0.079 0.080 0.078

OPR 53 4.829 4.779 4.901 4.832 4.927

Antimony 5 OPR 0.06 0.078 0.063 0.059 0.084 0.072 0.062 0.060 0.070 0.093

OPR 0.23 0.108

IPR 0.33 0.337 0.069 0.065 0.352 0.343 0.350 0.340 0.338

Antimony 62 IPR 0.061 0.064 0.068 0.071 0.067 0.070 0.062

Antimony 7 IPR 0.04 0.041 0.042 0.040 0.040

OPR 0.04 0.035 0.075 0.038

Antimony 8 IPR 0.53 0.530 0.518 0.549 0.546

OPR 0.53 0.525 0.431 0.449

Cadmium 1 IPR 0.2 0.187 0.196 0.202 0.215

OPR 0.3 0.260          Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 56 OPR 0.553 0.615

Cadmium 2 IPR 0.3 0.320 0.308 0.274 0.273

OPR 0.3 0.314 0.333 0.289 0.303 0.279 0.257 0.333 0.259 0.309 0.305 0.352 0.336

Cadmium 3 IPR 0.1 0.101 0.097 0.095 0.100

OPR 0.1 0.099 0.101 0.104

Cadmium 4 IPR 0.3 0.280 0.320 0.320 0.280 0.310 0.310 0.320 0.300 0.330 0.300 0.310 0.310

OPR 53 5.442 5.425 5.321 5.277 5.370

Cadmium 52 IPR 0.3 0.323 0.345 0.344 0.319 0.346 0.313 0.310 0.345

OPR 0.3 0.339 0.687 0.346 0.331 0.347 0.372 0.382 0.384 0.380 0.378 Cadmium 6 IPR 0.304 0.304 0.304 0.289 0.320 0.364 0.351

Cadmium 7 IPR 0.2 0.169 0.171 0.171 0.169

OPR 0.2 0.170 0.165 0.174

Cadmium 8 IPR 0.125 0.101 0.114 0.115 0.105

OPR 0.125 0.133 0.129 0.110

Copper 12 IPR 0.2 0.209 0.206 0.204 0.193

OPR 0.55 0.505 0.513

Copper 2 IPR 0.6 0.676 0.646 0.862 0.565

OPR 0.6 0.605 0.612 0.842 0.652 0.834 0.737 0.672 0.682

Copper 3 IPR 0.13 0.106 0.100 0.101 0.104       Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 57 OPR 0.13 0.102 0.104 0.096

Copper 4 IPR 0.6 0.650 0.670 0.690 0.710 0.640 0.770 0.780 0.660 0.640 0.810 0.610 0.650

OPR 53 5.508 5.421 5.574 5.481 5.640

Copper 5 IPR 0.6 0.663 0.666 0.690 0.693 1.0901 1.5001 0.901 0.872

OPR 0.6 0.518 3.0651, 4 0.668 0.567 0.558 0.599 0.617 0.626 0.607 0.645 Copper 6 IPR 0.639 0.715 0.670 0.687 0.731 0.726 0.699

Copper 7 IPR 0.4 0.370 0.378 0.376 0.373

OPR 0.4 0.375 0.370 0.360

Copper 8 IPR 0.1253 0.127 0.123 0.126 0.126

OPR 0.1253 0.129 0.164 0.118

Lead 12 IPR 0.05 0.045 0.055 0.045 0.042

OPR 0.15 0.158 0.134

Lead 2 IPR 0.15 0.2441 0.182 0.191 0.190

OPR 0.15 0.159 0.152 0.189 0.155 0.198 0.120 0.130

Lead 3 IPR 0.05 0.048 0.050 0.048 0.048

OPR 0.05 0.047 0.046 0.046

Lead 4 IPR 0.15 0.160 0.170 0.170 0.160 0.160 0.160 0.160 0.160 0.150 0.160 0.160 0.160

OPR 53 5.341 5.397 5.254 5.263 5.144

Lead 5 IPR 0.15 0.196 0.195 0.201 0.205 0.229 0.204 0.215    Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 58 OPR 0.15 0.164 0.7711, 4 0.183 0.176 0.171 0.166 0.168 0.167 0.165 0.172 Lead 6 IPR 0.4743 0.496 0.494 0.474 0.470 0.476 0.482

Lead 7 IPR 0.1 0.099 0.100 0.099 0.098

OPR 0.1 0.099 0.100 0.124

Lead 8 IPR 0.125 0.130 0.126 0.127 0.129

OPR 0.125 0.133 0.137 0.126

Nickel 1 IPR 1 1.060 1.080 1.080 1.050

OPR 2.55 2.480

OPR 5.053 5.030

Nickel 22 IPR 3 2.870 2.868 2.866 2.737

OPR 3 3.156 3.093 2.991 3.008 2.887 2.591 2.845 2.760 2.606 2.562 2.617 2.663

Nickel 3 IPR 0.13 0.095 0.097 0.099 0.097

OPR 0.13 0.102 0.093 0.085

Nickel 4 IPR 3 3.020 3.100 3.090 3.050 3.160 3.190 3.080 3.200 3.230 3.150 3.190 3.140

OPR 5 5.364 5.142 5.295 5.213 5.345

Nickel 5 IPR 3 3.100 3.190 3.220 3.220 2.750 2.820 2.670 2.830

OPR 3 2.830 4.7761 2.680 2.837 2.970 3.075 3.092 3.036 3.018 2.950 Nickel 6 IPR 3.078 3.011 3.179 3.157 3.139 3.194 3.273

Nickel 7 IPR 2 1.924 1.933 1.934 1.892       Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 59 OPR 2 1.878 1.862 1.798

Nickel 8 IPR 0.1253 0.130 0.120 0.128 0.123

OPR 0.1253 0.126 0.153 0.127

Selenium 1 IPR 0.53 0.310 0.516 0.503 0.578

OPR 2.55 3.190

OPR 5.053 6.150

Selenium 2 IPR 3 2.749 2.719 2.974 2.412

OPR 3 3.041 2.529 2.752 3.796 2.604 2.551 2.694 2.552 31.520 1

Selenium 3 IPR 2 2.132 2.062 2.092 2.175

OPR 2 1.983 2.008 2.307

Selenium 4 IPR 3 3.000 3.100 3.000 3.200 3.100 3.300 3.100 3.100 3.200 3.100 2.900 3.000

OPR 5 5.419 5.475 5.274 5.421 5.419

Selenium 5 IPR 3 2.790 3.070 2.800 3.130 2.410 2.410 2.260 2.630

OPR 3 2.900 2.260 2.123 1.850 3.649 3.748 3.099 2.484 2.930 3.670 Selenium 62 IPR 15.0123 16.190 16.041 14.993 16.199 15.334 16.012

Selenium 7 IPR 103 9.591 9.692 9.606 9.440

OPR 103 9.296 9.362 8.964

Selenium 8 IPR 2.5 2.640 2.623 2.516 2.511

OPR 2.5 2.504 2.796 2.649

Silver 1 IPR 0.1 0.100 0.107 0.106 0.101       Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 60 OPR 0.3 0.258

OPR 0.553 0.547

Silver 2 IPR 0.3 0.310 0.308 0.314 0.317

OPR 0.3 0.302 0.307 0.282 0.319 0.285 0.310 0.275 0.280 0.287 0.295 0.288 0.278 0.285 0.291 0.308

Silver 3 IPR 0.1 0.086 0.085 0.085 0.086

OPR 0.1 0.084 0.086 0.090

Silver 42 IPR 0.3 0.280 0.270 0.320 0.290 0.280 0.290 0.390 0.290 0.300 0.300 0.300 0.300

OPR 13 1.017 1.026 1.020

OPR 53 5.240 5.199 5.154 5.336 5.333

Silver 5 IPR 0.3 0.337 0.342 0.363 0.352 0.343 0.350 0.340 0.338

OPR 0.3 0.373 0.392 0.375 0.363 0.366 0.370 0.373 0.368 0.372

OPR 13 0.681

Silver 6 IPR 0.3 0.325 0.330 0.311 0.315 0.330 0.312

Silver 7 IPR 0.2 0.205 0.204 0.198 0.202

OPR 0.2 0.196 0.205 0.198

Silver 8 IPR 0.125 0.138 0.146 0.133 0.122

OPR 0.125 0.130 0.131 0.128

Thallium 12 IPR 0.05 0.055 0.050 0.055 0.048

OPR 0.05 0.050 0.043         Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 61 Thallium 2 IPR 0.06 0.080 0.079 0.084 0.078

OPR 0.06 0.056 0.058 0.053 0.061 0.058 0.054 0.049 0.051 0.043 0.055 0.040 0.042 0.036 0.041

Thallium 3 IPR 0.05 0.051 0.051 0.051 0.052

OPR 0.05 0.051 0.049 0.055

Thallium 4 IPR 0.06 0.056 0.058 0.058 0.058 0.061 0.057 0.058 0.059 0.057 0.060 0.055 0.056

OPR 53 4.679 4.724 4.655 4.629 4.549

Thallium 5 IPR 0.06 0.078 0.075 0.081 0.085 0.068 0.071 0.070 0.075

OPR 0.06 0.073 0.1101 0.080 0.080 0.086 0.065 0.063 0.067 0.063 0.063 Thallium 6 IPR 0.06 0.064 0.064 0.057 0.055 0.055 0.050

Thallium 7 IPR 0.04 0.042 0.041 0.042 0.040

OPR 0.04 0.040 0.042 0.044

Thallium 8 IPR 0.05 0.047 0.052 0.048 0.050

OPR 0.05 0.053 0.057 0.055

Zinc 1 IPR 1 0.899 0.945 0.857 0.916

OPR 1.05 0.964 1.030

Zinc 2 IPR 1.5 2.213 1.915 1.658 1.938

OPR 1.5 1.727 1.728 2.034 1.584 2.231 1.371 1.374 1.420 1.172 1.278 1.353 1.309

Zinc 3 IPR 1 1.026 1.059 1.040 1.029       Table 4: Initial and Ongoing Precision and Recovery Samples Analyte Lab Type Spike Amount ( µ g/ L)

1 2 3 4 5 6 7 8 9 10 B 62 OPR 1 1.047 1.055 1.007

Zinc 4 IPR 1.5 1.790 2.200 2.100 1.600 1.630 1.730 1.690 1.580 1.580 1.520 1.730 1.560

OPR 53 5.128 4.944 5.081 5.064 5.214

Zinc 52 IPR 1.5 1.610 1.670 1.620 1.650 2.570 2.950 3.030 3.030

OPR 1.5 1.220 2.360 1.258 1.280 1.094 1.165 1.205 1.263 1.180

OPR 53 6.039

Zinc 6 IPR 1.525 1.625 1.386 1.314 1.246 1.262 1.418

Zinc 7 IPR 1 0.992 0.979 0.994 0.977

OPR 1 0.942 0.973 1.014

Zinc 8 IPR 0.5 0.585 0.544 0.647 0.539

OPR 0.5 1.9661, 4 0.551 0.606

1 This data point was determined to be an outlier using Grubbs outlier test.

2 This laboratory's data package was rejected for this analyte using Youden's laboratory ranking.

3 These samples were not spiked at one to five times the ML.

4 After contacting the laboratory, it was determined that the elevated concentration was probably due to contamination. B 63 Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 Sb 1 MB 0.000 0.064 0.000 0.000 0.031 0.004 0.024 0.082 0.242 0.076 2 MB  0.006  0.009  0.016  0.019 0.010 0.012  0.004  0.010  0.005  0.018  0.014  0.014         2 CB  0.006 0.000  0.012  0.018  0.014  0.012  0.012  0.008  0.003  0.005 0.001  0.002  0.005 0.006  0.002 0.019

3 MB 0.004 0.006 0.009        3 CB 0.001 0.000 0.005 0.001 0.000 0.001 0.001  0.001  0.001 0.001 0.007 0.001 0.000  0.000

4 MB 0.026 0.020

CB 0.011 0.017 0.017 0.017 0.019 0.013 0.053 0.035 0.018

5 MB 0.028

CB 0.053  0.015  0.014  0.024  0.009  0.010  0.007  0.017  0.009

61 CB 0.043 0.030 0.022 0.013

7 MB 0.023  0.005  0.000

CB 0.000 0.002 0.002 0.005 0.027 0.005

8 MB 0.026  0.010 0.006

CB 0.008 0.034 0.014 0.033  0.008 0.002 0.022

Cd 1 MB 0.000 0.000 0.004 0.000 0.008 0.000 0.000 0.000 0.000 0.000 2 MB 0.011  0.001 0.007 0.006 0.016 0.019  0.016  0.025 0.012  0.003  0.014  0.029  0.004 0.016

CB 0.000 0.047 0.006 0.008 0.018 0.006 0.008 0.024 0.011  0.004 0.018  0.023  0.005 0.028 0.011 0.013  0.034  0.002 0.013  0.007 0.003          Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 64 3 MB  0.001 0.001 0.004

CB 0.001 0.000 0.001 0.000 0.002 0.002 0.000 0.002 0.002  0.001 4 MB 0.004 0.004

CB 0.008 0.013 0.019 0.019 0.019  0.130  0.008 0.022 0.005

51 MB 0.292

CB 0.067 0.069 0.058 0.068 0.035 0.038 0.030 0.064 0.028

6 CB 0.010 0.016 0.011 0.009

7 MB  0.037  0.034  0.033

CB  0.012  0.033  0.031  0.029  0.032  0.022

8 MB  0.004  0.021 0.012

CB  0.024  0.023  0.015  0.023  0.009 0.000 0.006

Cu 11 MB 0.045 0.042 0.037 0.041 0.000 0.057 0.050 0.054 0.068 0.048 2 MB 0.001 0.018  0.008  0.007  0.032  0.037 0.056 0.016 0.034 0.020 0.002 0.009 0.004  0.018

CB  0.001 0.010 0.048  0.040  0.041  0.006 0.000 0.031  0.006 0.004  0.004 0.042 0.001

3 MB  0.001  0.004  0.001

CB  0.002 0.005  0.004  0.003  0.004  0.002 0.000  0.001  0.001  0.002  0.002  0.004  0.003  0.001

4 MB 0.003 2.127

CB 0.012 0.005 0.006 0.001 0.014 0.015 0.014 0.018 0.006

5 MB 6.364

CB  0.073  0.079  0.099  0.109  0.059  0.061  0.058  0.063  0.109  Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 65 6 CB 0.076 0.084 0.055 0.066

7 MB  0.006  0.007  0.006

CB 0.001  0.009  0.009  0.009  0.006 0.001

8 MB  0.004  0.003 0.008

CB 0.001 0.000  0.002 0.002 0.002 0.003 0.006

Pb 11 MB 0.032 0.011 0.030 0.028 0.000 0.010 0.011 0.015 0.024 0.010 2 MB  0.002  0.001  0.000  0.022 0.001  0.002  0.000  0.000  0.013  0.016  0.001  0.015  0.004

CB  0.003 0.001  0.004 0.000  0.001 0.002  0.005  0.007 0.010  0.001 3 MB  0.001  0.002  0.002

CB  0.001  0.001  0.002  0.002  0.001  0.001  0.004  0.004  0.003  0.001  0.002  0.002  0.002  0.001

4 MB 0.003 0.017

CB 0.000 0.004 0.004  0.001  0.003 0.001 0.008 0.005 0.001

5 MB 0.859

CB 0.028  0.085 0.024 0.023 0.018 0.026 0.029 0.018 0.029

6 CB 0.016 0.018 0.016 0.020

7 MB 0.032 0.001 0.002

CB 0.002 0.002 0.004 0.002 0.002 0.004

8 MB  0.006  0.006 0.002

CB  0.004  0.001  0.007  0.007  0.005  0.004 0.001

Ni 1 MB 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 21 MB 0.051 0.797 0.070 0.012 0.378 0.001 0.006 0.042  0.006 0.038 Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 66  0.006 0.004  0.010 1.958

CB 0.011  0.016  0.002  0.011  0.014  0.011  0.004  0.006  0.012  0.017  0.061  0.109  0.002 0.009 0.015 0.010  0.016  0.005 0.013 0.054 0.00

3 MB  0.002 0.001  0.002

CB 0.001 0.003 0.003 0.002 0.001 0.001 0.002 0.000  0.000 0.002  0.002  0.001 0.000  0.001

4 MB 0.002 0.046

CB 0.004 0.006 0.002 0.000 0.005 0.000 0.002 0.003  0.001

5 MB 1.168

CB 0.028  0.122  0.024  0.025  0.086  0.112  0.165  0.000  0.030

6 CB 0.051 0.130 0.039 0.040

7 MB 0.002 0.009 0.010

CB 0.013 0.008 0.009 0.009 0.012 0.012

8 MB 0.001 0.003 0.010

CB 0.005 0.006 0.003 0.005 0.006 0.004 0.005

Se 1 MB 0.000 0.000 0.096 0.019 0.000 0.000 0.092 0.000 0.000 0.153 2 MB  0.187  0.446 0.519 0.180  0.161 0.132 0.071 0.066 0.127

CB 0.112  0.190 0.004 0.210  0.163  0.280  0.242  0.322  0.138  0.058  0.316 0.123 0.516 0.108 0.443 0.059

3 MB  0.036  0.083  0.037

CB  0.066  0.071  0.032  0.092  0.000  0.088  0.047  0.145  0.007  0.015 4 MB  0.024  0.037         Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 67 CB  0.044  0.025 0.051 0.001 0.035 0.017 0.014 0.071 0.047  0.028 5 MB  0.827

CB  0.417 0.012  0.347 0.118  0.126  1.162 0.467 0.505  0.210

61 CB 22.166 19.771 20.057 18.555

7 MB 0.026 0.016  0.027

CB 0.099  0.034  0.012  0.055 0.037 0.095

8 MB 0.111 0.109 0.103

CB 0.036 0.131 0.116 0.063 0.052 0.151 0.032

Ag 1 MB 0.011 0.015 0.017 0.012 0.014 0.000 0.036 0.034 0.144 0.026 2 MB  0.000  0.001  0.002  0.004 0.000  0.002  0.001  0.004  0.000 0.002 0.000 0.002 0.004  0.004  0.002  0.000 0.001 0.003  0.000

CB 0.002 0.000 0.000 0.003  0.001 0.000  0.003  0.000 0.000 0.000 0.001 0.005 0.003  0.001 0.000 0.001 0.000 0.001  0.000 0.001  0.000  0.002  0.003  0.001 0.002 0.010

3 MB  0.003  0.004  0.002

CB  0.001  0.002  0.002  0.001  0.001  0.001  0.002  0.000  0.002  0.001 41 MB 0.005 0.002 0.003 0.004

CB 0.003 0.009 0.009 0.003 0.002 0.000 0.003 0.003 0.002

5 MB 0.391

CB  0.464 0.049 0.048 0.048 0.043 0.046 0.044 0.048 0.045

6 CB 0.010 0.007 0.014 0.012

7 MB 0.003 0.002 0.002

CB 0.004 0.006 0.007 0.008 0.009 0.028     Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 68 8 MB 0.001 0.002 0.005

CB 0.002 0.001 0.001 0.005 0.017 0.004 0.006

Tl 11 MB 0.000 0.000 0.004 0.002 0.000 0.002 0.001 0.001 0.000 0.000 2 MB  0.007  0.001 0.002  0.008  0.010  0.009  0.001 0.002 0.002 0.000  0.001 0.001 0.001 0.004 0.004 0.003 0.001 0.002

CB 0.003 0.004 0.002  0.008 0.002 0.003  0.001  0.003  0.007  0.007 0.003  0.007  0.007  0.010  0.009  0.009  0.008  0.006  0.005 0.002 0.014 0.000 0.002

3 MB 0.000 0.000 0.001

CB  0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.002 4 MB 0.002  0.001

CB  0.001 0.002 0.000  0.001 0.000 0.000  0.001 0.001 0.002

5 MB 0.015

CB 0.003 0.004  0.006 0.004  0.006  0.004  0.004  0.006 0.001

6 CB 0.005 0.007 0.005 0.006

7 MB 0.000 0.000 0.001

CB 0.010 0.005 0.005 0.004 0.004 0.006

8 MB  0.001 0.002 0.003

CB 0.006 0.004 0.005  0.001 0.004 0.000 0.009

Zn 1 MB 0.111 0.096 0.123 0.179 0.008 0.076 0.047 0.009 0.012 0.067 2 MB 0.012 0.007  0.002  0.010  0.018  0.030 0.098 0.020 0.006 0.019 0.002 0.030 0.026 0.033

CB  0.025  0.028  0.016  0.022 0.004  0.007 0.001  0.029 0.012 0.054 Table 5: Method Blank ( MB) and Calibration Blank ( CB) Results Analyte Lab Type 1 2 3 4 5 6 7 8 9 10 B 69  0.012 0.018 0.040  0.012  0.004 0.003  0.012  0.025 0.069  0.016 0.10

3 MB  0.003  0.002  0.009

CB  0.006  0.021  0.018 0.017  0.004  0.005  0.009  0.010  0.009  0.008  0.008  0.011  0.013  0.003

4 MB  0.245 2.127

CB  0.161  0.157  0.429  0.204  0.258  0.387  0.062  0.069 0.043

51 MB 11.418

CB 0.056  0.006  0.017  0.000 0.054 0.035  0.012  0.009 0.017

6 CB 0.248 0.178 0.168 0.138

7 MB 0.016  0.015  0.017

CB  0.018  0.014  0.015  0.009 0.003 0.023

8 MB  0.020 0.040 0.759

CB 0.055 0.066  0.070  0.059  0.045 0.002  0.185