### Lab Client Sample Particle Tare Gross Net Volume Concentration ID ID Site Date Size Wt.(mg) Wt.(mg) Wt.(μg) (m3)* (μg/m3) Comments 08-T4479 HS-082308 Winkelman 8/23/08 PM10 145.697 146.053 356 21.73 16.38 08-T4481 HS-082908 Winkelman 8/29/08 PM10 144.042 144.243 201 21.70 9.26 08-T4482 HS-090108 Winkelman 9/1/08 PM10 142.610 142.812 202 21.96 9.20 08-T4484 HS-090408 Winkelman 9/4/08 PM10 150.546 150.895 349 21.78 16.02 08-T4485 HS-090708 Winkelman 9/7/08 PM10 149.339 149.559 220 21.73 10.13 08-T4759 HS-091208 Winkelman 9/12/08 PM10 148.355 149.138 783 22.11 35.42 08-T4760 HS-091808 Winkelman 9/18/08 PM10 146.903 147.159 256 22.02 11.63 08-T5229 HS-092408 Winkelman 9/24/08 PM10 147.811 148.039 228 21.85 10.43 08-T5230 HS-093008 Winkelman 9/30/08 PM10 146.070 146.507 437 21.91 19.94 08-T5231 HS-100608 Winkelman 10/6/08 PM10 148.335 148.724 389 22.42 17.35 08-T4469 MY-091208 Hayden 9/12/08 PM10 148.707 149.608 901 22.14 40.70 08-T4470 MY-091808 Hayden 9/18/08 PM10 149.765 150.405 640 22.06 29.01 08-T4471 MY-092408 Hayden 9/24/08 PM10 149.842 150.604 762 21.92 34.77 08-T4472 MY-093008 Hayden 9/30/08 PM10 149.631 150.875 1244 21.91 56.77 08-T4459 MY-100608 Hayden 10/6/08 PM10 145.029 145.764 735 22.46 32.73

* - Volumes are in STP 

## CH2M HILL ASARCO Hayden Gravimetric DataClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4479 Client ID: HS-082308 Site: Winkelman Sample Date: 8/23/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 356. ± 10. 14.83 ± 1.541

XRF Na 5.336 ± 1.120 1.499 ± 0.3174 0.2223 ± 0.0517 Mg 1.448 ± 0.3413 0.4066 ± 0.0965 0.0603 ± 0.0154 Al 6.056 ± 0.4667 1.701 ± 0.1395 0.2523 ± 0.0319 Si 16.35 ± 1.049 4.593 ± 0.3216 0.6813 ± 0.0809 * P 0.0667 ± 0.0260 0.0187 ± 0.0073 0.0028 ± 0.0011 S 15.30 ± 0.7854 4.298 ± 0.2515 0.6375 ± 0.0717 Cl 2.051 ± 0.1186 0.5761 ± 0.0370 0.0855 ± 0.0099 K 3.879 ± 0.2034 1.090 ± 0.0648 0.1616 ± 0.0183 Ca 7.059 ± 0.3786 1.983 ± 0.1200 0.2941 ± 0.0334 Ti 0.6000 ± 0.0328 0.1685 ± 0.0104 0.0250 ± 0.0028 * V 0.0000 ± 0.0090 0.0000 ± 0.0025 0.0000 ± 0.0004 * Cr 0.0000 ± 0.0056 0.0000 ± 0.0016 0.0000 ± 0.0002 Mn 0.0915 ± 0.0102 0.0257 ± 0.0029 0.0038 ± 0.0006 Fe 5.329 ± 0.2689 1.497 ± 0.0865 0.2220 ± 0.0249 * Co 0.0000 ± 0.0294 0.0000 ± 0.0083 0.0000 ± 0.0012 * Ni 0.0452 ± 0.0215 0.0127 ± 0.0060 0.0019 ± 0.0009 Cu 2.253 ± 0.1232 0.6329 ± 0.0389 0.0939 ± 0.0107 Zn 0.4136 ± 0.0373 0.1162 ± 0.0110 0.0172 ± 0.0023 * Ga 0.0000 ± 0.0136 0.0000 ± 0.0038 0.0000 ± 0.0006 * Ge 0.0000 ± 0.0102 0.0000 ± 0.0029 0.0000 ± 0.0004 As 0.2215 ± 0.0452 0.0622 ± 0.0128 0.0092 ± 0.0021 Se 0.0520 ± 0.0102 0.0146 ± 0.0029 0.0022 ± 0.0005 Br 0.0362 ± 0.0090 0.0102 ± 0.0026 0.0015 ± 0.0004 * Rb 0.0147 ± 0.0102 0.0041 ± 0.0029 0.0006 ± 0.0004 Sr 0.0497 ± 0.0124 0.0140 ± 0.0035 0.0021 ± 0.0006 * Y 0.0000 ± 0.0147 0.0000 ± 0.0041 0.0000 ± 0.0006 * Zr 0.0102 ± 0.0170 0.0029 ± 0.0048 0.0004 ± 0.0007 * Mo 0.0362 ± 0.0237 0.0102 ± 0.0067 0.0015 ± 0.0010 * Pd 0.0000 ± 0.0170 0.0000 ± 0.0048 0.0000 ± 0.0007 * Ag 0.0000 ± 0.0158 0.0000 ± 0.0044 0.0000 ± 0.0007 * Cd 0.0181 ± 0.0147 0.0051 ± 0.0041 0.0008 ± 0.0006 * In 0.0000 ± 0.0158 0.0000 ± 0.0044 0.0000 ± 0.0007 * Sn 0.0158 ± 0.0203 0.0044 ± 0.0057 0.0007 ± 0.0009 * Sb 0.0000 ± 0.0226 0.0000 ± 0.0063 0.0000 ± 0.0009 * Ba 0.0215 ± 0.0282 0.0060 ± 0.0079 0.0009 ± 0.0012 * La 0.0045 ± 0.0316 0.0013 ± 0.0089 0.0002 ± 0.0013 * Hg 0.0000 ± 0.0215 0.0000 ± 0.0060 0.0000 ± 0.0009 Pb 0.7345 ± 0.0520 0.2063 ± 0.0157 0.0306 ± 0.0037

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4481 Client ID: HS-082908 Site: Winkelman Sample Date: 8/29/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 201. ± 10. 8.375 ± 0.9354

XRF * Na 0.7605 ± 0.6972 0.3784 ± 0.3474 0.0317 ± 0.0292 * Mg 0.4486 ± 0.2328 0.2232 ± 0.1163 0.0187 ± 0.0099 Al 1.815 ± 0.1740 0.9029 ± 0.0975 0.0756 ± 0.0105 Si 5.009 ± 0.3311 2.492 ± 0.2062 0.2087 ± 0.0250 P 0.0802 ± 0.0215 0.0399 ± 0.0109 0.0033 ± 0.0010 S 10.77 ± 0.5537 5.359 ± 0.3834 0.4488 ± 0.0505 * Cl 0.0000 ± 0.0282 0.0000 ± 0.0141 0.0000 ± 0.0012 K 1.101 ± 0.0644 0.5476 ± 0.0421 0.0459 ± 0.0053 Ca 3.044 ± 0.3458 1.515 ± 0.1878 0.1268 ± 0.0192 Ti 0.1412 ± 0.0102 0.0703 ± 0.0062 0.0059 ± 0.0007 * V 0.0000 ± 0.0056 0.0000 ± 0.0028 0.0000 ± 0.0002 * Cr 0.0000 ± 0.0056 0.0000 ± 0.0028 0.0000 ± 0.0002 * Mn 0.0124 ± 0.0079 0.0062 ± 0.0039 0.0005 ± 0.0003 Fe 1.366 ± 0.1107 0.6797 ± 0.0646 0.0569 ± 0.0073 * Co 0.0000 ± 0.0181 0.0000 ± 0.0090 0.0000 ± 0.0008 * Ni 0.0260 ± 0.0192 0.0129 ± 0.0096 0.0011 ± 0.0008 Cu 0.1944 ± 0.0237 0.0967 ± 0.0127 0.0081 ± 0.0013 * Zn 0.0429 ± 0.0203 0.0214 ± 0.0102 0.0018 ± 0.0009 * Ga 0.0000 ± 0.0124 0.0000 ± 0.0062 0.0000 ± 0.0005 * Ge 0.0079 ± 0.0090 0.0039 ± 0.0045 0.0003 ± 0.0004 * As 0.0000 ± 0.0090 0.0000 ± 0.0045 0.0000 ± 0.0004 * Se 0.0158 ± 0.0079 0.0079 ± 0.0040 0.0007 ± 0.0003 * Br 0.0000 ± 0.0079 0.0000 ± 0.0039 0.0000 ± 0.0003 * Rb 0.0147 ± 0.0090 0.0073 ± 0.0045 0.0006 ± 0.0004 Sr 0.0373 ± 0.0113 0.0186 ± 0.0057 0.0016 ± 0.0005 * Y 0.0000 ± 0.0136 0.0000 ± 0.0067 0.0000 ± 0.0006 * Zr 0.0000 ± 0.0158 0.0000 ± 0.0079 0.0000 ± 0.0007 * Mo 0.0226 ± 0.0226 0.0112 ± 0.0113 0.0009 ± 0.0009 * Pd 0.0000 ± 0.0158 0.0000 ± 0.0079 0.0000 ± 0.0007 * Ag 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * Cd 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * In 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * Sn 0.0000 ± 0.0192 0.0000 ± 0.0096 0.0000 ± 0.0008 * Sb 0.0215 ± 0.0226 0.0107 ± 0.0113 0.0009 ± 0.0009 * Ba 0.0000 ± 0.0192 0.0000 ± 0.0096 0.0000 ± 0.0008 * La 0.0260 ± 0.0147 0.0129 ± 0.0073 0.0011 ± 0.0006 * Hg 0.0090 ± 0.0192 0.0045 ± 0.0096 0.0004 ± 0.0008 * Pb 0.0271 ± 0.0249 0.0135 ± 0.0124 0.0011 ± 0.0010

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4482 Client ID: HS-090108 Site: Winkelman Sample Date: 9/ 1/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 202. ± 10. 8.417 ± 0.9392

XRF * Na 1.083 ± 0.7413 0.5359 ± 0.3679 0.0451 ± 0.0312 * Mg 0.5548 ± 0.2475 0.2747 ± 0.1233 0.0231 ± 0.0106 Al 1.545 ± 0.1627 0.7647 ± 0.0890 0.0644 ± 0.0093 Si 4.869 ± 0.3232 2.410 ± 0.1996 0.2029 ± 0.0244 P 0.1175 ± 0.0237 0.0582 ± 0.0121 0.0049 ± 0.0011 S 12.52 ± 0.6418 6.198 ± 0.4417 0.5217 ± 0.0586 * Cl 0.0113 ± 0.0305 0.0056 ± 0.0151 0.0005 ± 0.0013 K 1.368 ± 0.0780 0.6774 ± 0.0511 0.0570 ± 0.0066 Ca 1.400 ± 0.1186 0.6931 ± 0.0680 0.0583 ± 0.0076 Ti 0.1695 ± 0.0113 0.0839 ± 0.0070 0.0071 ± 0.0008 * V 0.0000 ± 0.0056 0.0000 ± 0.0028 0.0000 ± 0.0002 * Cr 0.0000 ± 0.0056 0.0000 ± 0.0028 0.0000 ± 0.0002 Mn 0.0305 ± 0.0079 0.0151 ± 0.0040 0.0013 ± 0.0004 Fe 1.780 ± 0.0915 0.8811 ± 0.0629 0.0742 ± 0.0083 * Co 0.0000 ± 0.0192 0.0000 ± 0.0095 0.0000 ± 0.0008 * Ni 0.0068 ± 0.0192 0.0034 ± 0.0095 0.0003 ± 0.0008 Cu 0.8407 ± 0.0542 0.4162 ± 0.0338 0.0350 ± 0.0042 Zn 0.2542 ± 0.0294 0.1259 ± 0.0158 0.0106 ± 0.0016 * Ga 0.0000 ± 0.0124 0.0000 ± 0.0062 0.0000 ± 0.0005 * Ge 0.0000 ± 0.0090 0.0000 ± 0.0045 0.0000 ± 0.0004 As 0.1966 ± 0.0294 0.0973 ± 0.0153 0.0082 ± 0.0015 * Se 0.0203 ± 0.0090 0.0101 ± 0.0045 0.0008 ± 0.0004 * Br 0.0045 ± 0.0079 0.0022 ± 0.0039 0.0002 ± 0.0003 * Rb 0.0045 ± 0.0090 0.0022 ± 0.0045 0.0002 ± 0.0004 * Sr 0.0136 ± 0.0113 0.0067 ± 0.0056 0.0006 ± 0.0005 * Y 0.0000 ± 0.0136 0.0000 ± 0.0067 0.0000 ± 0.0006 * Zr 0.0136 ± 0.0158 0.0067 ± 0.0078 0.0006 ± 0.0007 * Mo 0.0418 ± 0.0226 0.0207 ± 0.0112 0.0017 ± 0.0010 * Pd 0.0000 ± 0.0158 0.0000 ± 0.0078 0.0000 ± 0.0007 * Ag 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * Cd 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * In 0.0000 ± 0.0147 0.0000 ± 0.0073 0.0000 ± 0.0006 * Sn 0.0000 ± 0.0192 0.0000 ± 0.0095 0.0000 ± 0.0008 * Sb 0.0124 ± 0.0226 0.0062 ± 0.0112 0.0005 ± 0.0009 * Ba 0.0000 ± 0.0192 0.0000 ± 0.0095 0.0000 ± 0.0008 * La 0.0237 ± 0.0158 0.0117 ± 0.0079 0.0010 ± 0.0007 * Hg 0.0000 ± 0.0192 0.0000 ± 0.0095 0.0000 ± 0.0008 Pb 0.3684 ± 0.0362 0.1824 ± 0.0200 0.0153 ± 0.0022

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4484 Client ID: HS-090408 Site: Winkelman Sample Date: 9/ 4/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 349. ± 10. 14.54 ± 1.513

XRF * Na 0.4938 ± 0.3243 0.1415 ± 0.0930 0.0206 ± 0.0137 Mg 1.527 ± 0.3650 0.4374 ± 0.1053 0.0636 ± 0.0165 Al 8.268 ± 0.6204 2.369 ± 0.1903 0.3445 ± 0.0431 Si 25.58 ± 1.633 7.330 ± 0.5128 1.066 ± 0.1265 * P 0.0757 ± 0.0271 0.0217 ± 0.0078 0.0032 ± 0.0012 S 17.03 ± 0.8735 4.879 ± 0.2867 0.7095 ± 0.0797 * Cl 0.1153 ± 0.0384 0.0330 ± 0.0110 0.0048 ± 0.0017 K 3.936 ± 0.4226 1.128 ± 0.1253 0.1640 ± 0.0241 Ca 7.378 ± 0.6486 2.114 ± 0.1955 0.3074 ± 0.0409 Ti 0.8475 ± 0.0452 0.2428 ± 0.0147 0.0353 ± 0.0040 * V 0.0000 ± 0.0124 0.0000 ± 0.0036 0.0000 ± 0.0005 * Cr 0.0102 ± 0.0068 0.0029 ± 0.0019 0.0004 ± 0.0003 Mn 0.0949 ± 0.0113 0.0272 ± 0.0033 0.0040 ± 0.0006 Fe 8.041 ± 0.4045 2.304 ± 0.1334 0.3350 ± 0.0375 * Co 0.0000 ± 0.0407 0.0000 ± 0.0117 0.0000 ± 0.0017 * Ni 0.0463 ± 0.0249 0.0133 ± 0.0071 0.0019 ± 0.0011 Cu 2.882 ± 0.1548 0.8256 ± 0.0503 0.1201 ± 0.0136 Zn 0.2746 ± 0.0316 0.0787 ± 0.0093 0.0114 ± 0.0017 * Ga 0.0000 ± 0.0158 0.0000 ± 0.0045 0.0000 ± 0.0007 * Ge 0.0000 ± 0.0113 0.0000 ± 0.0032 0.0000 ± 0.0005 As 0.2373 ± 0.0328 0.0680 ± 0.0096 0.0099 ± 0.0017 * Se 0.0249 ± 0.0102 0.0071 ± 0.0029 0.0010 ± 0.0004 Br 0.0508 ± 0.0102 0.0146 ± 0.0029 0.0021 ± 0.0005 * Rb 0.0000 ± 0.0113 0.0000 ± 0.0032 0.0000 ± 0.0005 Sr 0.0644 ± 0.0136 0.0185 ± 0.0039 0.0027 ± 0.0006 * Y 0.0294 ± 0.0170 0.0084 ± 0.0049 0.0012 ± 0.0007 * Zr 0.0316 ± 0.0203 0.0091 ± 0.0058 0.0013 ± 0.0009 * Mo 0.0542 ± 0.0282 0.0155 ± 0.0081 0.0023 ± 0.0012 * Pd 0.0215 ± 0.0181 0.0062 ± 0.0052 0.0009 ± 0.0008 * Ag 0.0000 ± 0.0170 0.0000 ± 0.0049 0.0000 ± 0.0007 * Cd 0.0226 ± 0.0170 0.0065 ± 0.0049 0.0009 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0049 0.0000 ± 0.0007 * Sn 0.0452 ± 0.0226 0.0130 ± 0.0065 0.0019 ± 0.0010 * Sb 0.0000 ± 0.0260 0.0000 ± 0.0074 0.0000 ± 0.0011 * Ba 0.0000 ± 0.0350 0.0000 ± 0.0100 0.0000 ± 0.0015 * La 0.0147 ± 0.0384 0.0042 ± 0.0110 0.0006 ± 0.0016 * Hg 0.0000 ± 0.0237 0.0000 ± 0.0068 0.0000 ± 0.0010 Pb 0.3910 ± 0.0407 0.1120 ± 0.0121 0.0163 ± 0.0024

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4485 Client ID: HS-090708 Site: Winkelman Sample Date: 9/ 7/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 220. ± 10. 9.167 ± 1.007

XRF * Na 0.3876 ± 0.2735 0.1762 ± 0.1246 0.0161 ± 0.0115 Mg 1.026 ± 0.2915 0.4664 ± 0.1342 0.0428 ± 0.0129 Al 4.903 ± 0.3808 2.229 ± 0.2006 0.2043 ± 0.0259 Si 12.87 ± 0.8226 5.850 ± 0.4588 0.5363 ± 0.0636 * P 0.0170 ± 0.0226 0.0077 ± 0.0103 0.0007 ± 0.0009 S 12.74 ± 0.6543 5.789 ± 0.3971 0.5306 ± 0.0597 * Cl 0.0000 ± 0.0328 0.0000 ± 0.0149 0.0000 ± 0.0014 K 2.298 ± 0.1243 1.045 ± 0.0738 0.0958 ± 0.0109 Ca 4.436 ± 0.2520 2.017 ± 0.1467 0.1848 ± 0.0213 Ti 0.3616 ± 0.0203 0.1644 ± 0.0119 0.0151 ± 0.0017 * V 0.0000 ± 0.0079 0.0000 ± 0.0036 0.0000 ± 0.0003 * Cr 0.0000 ± 0.0068 0.0000 ± 0.0031 0.0000 ± 0.0003 Mn 0.0554 ± 0.0102 0.0252 ± 0.0048 0.0023 ± 0.0005 Fe 3.556 ± 0.1808 1.616 ± 0.1102 0.1482 ± 0.0166 * Co 0.0000 ± 0.0260 0.0000 ± 0.0118 0.0000 ± 0.0011 * Ni 0.0373 ± 0.0237 0.0170 ± 0.0108 0.0016 ± 0.0010 Cu 0.7650 ± 0.0508 0.3477 ± 0.0280 0.0319 ± 0.0038 Zn 0.1356 ± 0.0260 0.0616 ± 0.0121 0.0056 ± 0.0012 * Ga 0.0000 ± 0.0147 0.0000 ± 0.0067 0.0000 ± 0.0006 * Ge 0.0000 ± 0.0113 0.0000 ± 0.0051 0.0000 ± 0.0005 * As 0.0633 ± 0.0215 0.0288 ± 0.0098 0.0026 ± 0.0009 * Se 0.0102 ± 0.0102 0.0046 ± 0.0046 0.0004 ± 0.0004 * Br 0.0282 ± 0.0102 0.0128 ± 0.0047 0.0012 ± 0.0004 * Rb 0.0079 ± 0.0113 0.0036 ± 0.0051 0.0003 ± 0.0005 * Sr 0.0260 ± 0.0136 0.0118 ± 0.0062 0.0011 ± 0.0006 * Y 0.0203 ± 0.0158 0.0092 ± 0.0072 0.0008 ± 0.0007 * Zr 0.0000 ± 0.0192 0.0000 ± 0.0087 0.0000 ± 0.0008 * Mo 0.0000 ± 0.0271 0.0000 ± 0.0123 0.0000 ± 0.0011 * Pd 0.0000 ± 0.0181 0.0000 ± 0.0082 0.0000 ± 0.0008 * Ag 0.0011 ± 0.0170 0.0005 ± 0.0077 0.0000 ± 0.0007 * Cd 0.0192 ± 0.0170 0.0087 ± 0.0077 0.0008 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0077 0.0000 ± 0.0007 * Sn 0.0023 ± 0.0226 0.0010 ± 0.0103 0.0001 ± 0.0009 * Sb 0.0000 ± 0.0249 0.0000 ± 0.0113 0.0000 ± 0.0010 * Ba 0.0000 ± 0.0249 0.0000 ± 0.0113 0.0000 ± 0.0010 * La 0.0339 ± 0.0260 0.0154 ± 0.0118 0.0014 ± 0.0011 * Hg 0.0023 ± 0.0226 0.0010 ± 0.0103 0.0001 ± 0.0009 Pb 0.1616 ± 0.0328 0.0734 ± 0.0153 0.0067 ± 0.0015

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M Hill Report Number: 08-361

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Lab ID: 08-T4759 Client ID: HS-091208 Site: Winkelman Sample Date: 9/12/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 783. ± 10. 32.62 ± 3.289

XRF * Na 1.746 ± 1.231 0.2230 ± 0.1572 0.0727 ± 0.0518 Mg 7.415 ± 0.8554 0.9470 ± 0.1099 0.3090 ± 0.0472 Al 36.54 ± 2.724 4.667 ± 0.3530 1.523 ± 0.1899 Si 91.19 ± 6.007 11.65 ± 0.7815 3.800 ± 0.4550 P 0.1605 ± 0.0362 0.0205 ± 0.0046 0.0067 ± 0.0016 S 9.443 ± 0.5006 1.206 ± 0.0658 0.3935 ± 0.0445 * Cl 0.1107 ± 0.0396 0.0141 ± 0.0051 0.0046 ± 0.0017 K 13.30 ± 0.6803 1.699 ± 0.0895 0.5542 ± 0.0622 Ca 25.07 ± 1.283 3.202 ± 0.1688 1.045 ± 0.1174 Ti 1.953 ± 0.0994 0.2494 ± 0.0131 0.0814 ± 0.0091 * V 0.0305 ± 0.0237 0.0039 ± 0.0030 0.0013 ± 0.0010 * Cr 0.0158 ± 0.0079 0.0020 ± 0.0010 0.0007 ± 0.0003 Mn 0.5458 ± 0.0305 0.0697 ± 0.0040 0.0227 ± 0.0026 Fe 20.85 ± 1.044 2.663 ± 0.1376 0.8687 ± 0.0972 * Co 0.0000 ± 0.0927 0.0000 ± 0.0118 0.0000 ± 0.0039 * Ni 0.0011 ± 0.0237 0.0001 ± 0.0030 0.0000 ± 0.0010 Cu 1.622 ± 0.1345 0.2071 ± 0.0174 0.0676 ± 0.0088 Zn 0.2452 ± 0.0305 0.0313 ± 0.0039 0.0102 ± 0.0016 * Ga 0.0000 ± 0.0158 0.0000 ± 0.0020 0.0000 ± 0.0007 * Ge 0.0147 ± 0.0113 0.0019 ± 0.0014 0.0006 ± 0.0005 * As 0.0542 ± 0.0237 0.0069 ± 0.0030 0.0023 ± 0.0010 * Se 0.0079 ± 0.0113 0.0010 ± 0.0014 0.0003 ± 0.0005 Br 0.0407 ± 0.0102 0.0052 ± 0.0013 0.0017 ± 0.0005 Rb 0.0723 ± 0.0124 0.0092 ± 0.0016 0.0030 ± 0.0006 Sr 0.1503 ± 0.0170 0.0192 ± 0.0022 0.0063 ± 0.0009 * Y 0.0181 ± 0.0170 0.0023 ± 0.0022 0.0008 ± 0.0007 Zr 0.0689 ± 0.0215 0.0088 ± 0.0027 0.0029 ± 0.0009 * Mo 0.0000 ± 0.0282 0.0000 ± 0.0036 0.0000 ± 0.0012 * Pd 0.0000 ± 0.0192 0.0000 ± 0.0025 0.0000 ± 0.0008 * Ag 0.0192 ± 0.0181 0.0025 ± 0.0023 0.0008 ± 0.0008 * Cd 0.0000 ± 0.0170 0.0000 ± 0.0022 0.0000 ± 0.0007 * In 0.0000 ± 0.0181 0.0000 ± 0.0023 0.0000 ± 0.0008 * Sn 0.0633 ± 0.0249 0.0081 ± 0.0032 0.0026 ± 0.0011 * Sb 0.0034 ± 0.0271 0.0004 ± 0.0035 0.0001 ± 0.0011 * Ba 0.0893 ± 0.0610 0.0114 ± 0.0078 0.0037 ± 0.0026 * La 0.0000 ± 0.0667 0.0000 ± 0.0085 0.0000 ± 0.0028 * Hg 0.0249 ± 0.0237 0.0032 ± 0.0030 0.0010 ± 0.0010 Pb 0.1978 ± 0.0339 0.0253 ± 0.0043 0.0082 ± 0.0016

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M Hill Report Number: 08-361

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Lab ID: 08-T4760 Client ID: HS-091808 Site: Winkelman Sample Date: 9/18/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 256. ± 10. 10.67 ± 1.145

XRF * Na 0.2780 ± 0.2859 0.1086 ± 0.1118 0.0116 ± 0.0120 Mg 1.521 ± 0.3232 0.5941 ± 0.1284 0.0634 ± 0.0149 Al 7.386 ± 0.5514 2.885 ± 0.2431 0.3077 ± 0.0384 Si 20.61 ± 1.311 8.051 ± 0.6009 0.8588 ± 0.1018 * P 0.0000 ± 0.0237 0.0000 ± 0.0093 0.0000 ± 0.0010 S 13.40 ± 0.6893 5.235 ± 0.3381 0.5584 ± 0.0628 * Cl 0.0000 ± 0.0316 0.0000 ± 0.0124 0.0000 ± 0.0013 K 3.231 ± 0.1706 1.262 ± 0.0829 0.1346 ± 0.0152 Ca 7.278 ± 0.3887 2.843 ± 0.1881 0.3033 ± 0.0344 Ti 0.5752 ± 0.0316 0.2247 ± 0.0152 0.0240 ± 0.0027 * V 0.0000 ± 0.0090 0.0000 ± 0.0035 0.0000 ± 0.0004 * Cr 0.0000 ± 0.0068 0.0000 ± 0.0026 0.0000 ± 0.0003 Mn 0.1062 ± 0.0113 0.0415 ± 0.0047 0.0044 ± 0.0006 Fe 6.195 ± 0.4509 2.420 ± 0.1999 0.2581 ± 0.0319 * Co 0.0000 ± 0.0350 0.0000 ± 0.0137 0.0000 ± 0.0015 * Ni 0.0124 ± 0.0226 0.0049 ± 0.0088 0.0005 ± 0.0009 Cu 1.886 ± 0.1051 0.7367 ± 0.0501 0.0786 ± 0.0090 Zn 0.3390 ± 0.0339 0.1324 ± 0.0142 0.0141 ± 0.0020 * Ga 0.0000 ± 0.0136 0.0000 ± 0.0053 0.0000 ± 0.0006 * Ge 0.0000 ± 0.0102 0.0000 ± 0.0040 0.0000 ± 0.0004 As 0.1028 ± 0.0316 0.0402 ± 0.0125 0.0043 ± 0.0014 * Se 0.0000 ± 0.0090 0.0000 ± 0.0035 0.0000 ± 0.0004 Br 0.0271 ± 0.0090 0.0106 ± 0.0036 0.0011 ± 0.0004 * Rb 0.0147 ± 0.0113 0.0057 ± 0.0044 0.0006 ± 0.0005 * Sr 0.0271 ± 0.0124 0.0106 ± 0.0049 0.0011 ± 0.0005 * Y 0.0079 ± 0.0158 0.0031 ± 0.0062 0.0003 ± 0.0007 * Zr 0.0181 ± 0.0181 0.0071 ± 0.0071 0.0008 ± 0.0008 * Mo 0.0102 ± 0.0260 0.0040 ± 0.0102 0.0004 ± 0.0011 * Pd 0.0181 ± 0.0181 0.0071 ± 0.0071 0.0008 ± 0.0008 * Ag 0.0294 ± 0.0170 0.0115 ± 0.0066 0.0012 ± 0.0007 * Cd 0.0000 ± 0.0158 0.0000 ± 0.0062 0.0000 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0066 0.0000 ± 0.0007 * Sn 0.0622 ± 0.0226 0.0243 ± 0.0089 0.0026 ± 0.0010 * Sb 0.0000 ± 0.0249 0.0000 ± 0.0097 0.0000 ± 0.0010 * Ba 0.0215 ± 0.0294 0.0084 ± 0.0115 0.0009 ± 0.0012 * La 0.0000 ± 0.0316 0.0000 ± 0.0124 0.0000 ± 0.0013 * Hg 0.0000 ± 0.0215 0.0000 ± 0.0084 0.0000 ± 0.0009 Pb 0.4531 ± 0.0407 0.1770 ± 0.0173 0.0189 ± 0.0025

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M Hill Report Number: 08-361

=======================================================================

Lab ID: 08-T5229 Client ID: HS-092408 Site: Winkelman Sample Date: 9/24/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 228. ± 10. 9.500 ± 1.037

XRF * Na 0.4226 ± 0.2689 0.1854 ± 0.1182 0.0176 ± 0.0113 * Mg 0.5345 ± 0.2802 0.2344 ± 0.1233 0.0223 ± 0.0119 Al 4.131 ± 0.3300 1.812 ± 0.1651 0.1721 ± 0.0220 Si 12.09 ± 0.7740 5.303 ± 0.4115 0.5038 ± 0.0598 * P 0.0000 ± 0.0226 0.0000 ± 0.0099 0.0000 ± 0.0009 S 12.66 ± 0.6498 5.551 ± 0.3748 0.5273 ± 0.0593 * Cl 0.0000 ± 0.0305 0.0000 ± 0.0134 0.0000 ± 0.0013 K 2.062 ± 0.1119 0.9045 ± 0.0631 0.0859 ± 0.0098 Ca 5.873 ± 0.5424 2.576 ± 0.2634 0.2447 ± 0.0333 Ti 0.3074 ± 0.0181 0.1348 ± 0.0099 0.0128 ± 0.0015 * V 0.0147 ± 0.0068 0.0064 ± 0.0030 0.0006 ± 0.0003 * Cr 0.0000 ± 0.0068 0.0000 ± 0.0030 0.0000 ± 0.0003 Mn 0.0531 ± 0.0102 0.0233 ± 0.0046 0.0022 ± 0.0005 Fe 3.309 ± 0.1684 1.451 ± 0.0975 0.1379 ± 0.0155 * Co 0.0000 ± 0.0249 0.0000 ± 0.0109 0.0000 ± 0.0010 * Ni 0.0260 ± 0.0226 0.0114 ± 0.0099 0.0011 ± 0.0009 Cu 1.070 ± 0.0960 0.4693 ± 0.0469 0.0446 ± 0.0060 Zn 0.2927 ± 0.0316 0.1284 ± 0.0150 0.0122 ± 0.0018 * Ga 0.0000 ± 0.0136 0.0000 ± 0.0059 0.0000 ± 0.0006 * Ge 0.0023 ± 0.0102 0.0010 ± 0.0045 0.0001 ± 0.0004 * As 0.0486 ± 0.0260 0.0213 ± 0.0114 0.0020 ± 0.0011 * Se 0.0124 ± 0.0090 0.0055 ± 0.0040 0.0005 ± 0.0004 Br 0.0486 ± 0.0102 0.0213 ± 0.0046 0.0020 ± 0.0005 * Rb 0.0203 ± 0.0113 0.0089 ± 0.0050 0.0008 ± 0.0005 Sr 0.0396 ± 0.0124 0.0173 ± 0.0055 0.0016 ± 0.0005 * Y 0.0079 ± 0.0158 0.0035 ± 0.0069 0.0003 ± 0.0007 * Zr 0.0000 ± 0.0181 0.0000 ± 0.0079 0.0000 ± 0.0008 * Mo 0.0000 ± 0.0260 0.0000 ± 0.0114 0.0000 ± 0.0011 * Pd 0.0000 ± 0.0181 0.0000 ± 0.0079 0.0000 ± 0.0008 * Ag 0.0475 ± 0.0170 0.0208 ± 0.0075 0.0020 ± 0.0007 * Cd 0.0000 ± 0.0158 0.0000 ± 0.0069 0.0000 ± 0.0007 * In 0.0000 ± 0.0158 0.0000 ± 0.0069 0.0000 ± 0.0007 Sn 0.0859 ± 0.0237 0.0377 ± 0.0105 0.0036 ± 0.0011 * Sb 0.0316 ± 0.0249 0.0139 ± 0.0109 0.0013 ± 0.0010 * Ba 0.0136 ± 0.0249 0.0059 ± 0.0109 0.0006 ± 0.0010 * La 0.0350 ± 0.0237 0.0154 ± 0.0104 0.0015 ± 0.0010 * Hg 0.0373 ± 0.0226 0.0164 ± 0.0099 0.0016 ± 0.0010 Pb 0.3390 ± 0.0362 0.1487 ± 0.0171 0.0141 ± 0.0021

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M Hill Report Number: 08-361

=======================================================================

Lab ID: 08-T5230 Client ID: HS-093008 Site: Winkelman Sample Date: 9/30/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 437. ± 10. 18.21 ± 1.868

XRF * Na 0.3774 ± 0.3345 0.0864 ± 0.0766 0.0157 ± 0.0140 * Mg 0.8283 ± 0.3311 0.1895 ± 0.0759 0.0345 ± 0.0142 Al 4.468 ± 0.3695 1.022 ± 0.0877 0.1862 ± 0.0242 Si 14.69 ± 0.9515 3.362 ± 0.2309 0.6121 ± 0.0729 * P 0.0000 ± 0.0316 0.0000 ± 0.0072 0.0000 ± 0.0013 S 42.12 ± 2.138 9.637 ± 0.5366 1.755 ± 0.1968 * Cl 0.0000 ± 0.0508 0.0000 ± 0.0116 0.0000 ± 0.0021 K 2.975 ± 0.3492 0.6808 ± 0.0814 0.1240 ± 0.0191 Ca 10.67 ± 0.5571 2.442 ± 0.1392 0.4447 ± 0.0502 Ti 0.4192 ± 0.0237 0.0959 ± 0.0059 0.0175 ± 0.0020 * V 0.0000 ± 0.0079 0.0000 ± 0.0018 0.0000 ± 0.0003 * Cr 0.0000 ± 0.0068 0.0000 ± 0.0016 0.0000 ± 0.0003 Mn 0.0791 ± 0.0102 0.0181 ± 0.0024 0.0033 ± 0.0005 Fe 3.793 ± 0.1921 0.8681 ± 0.0482 0.1581 ± 0.0177 * Co 0.0000 ± 0.0260 0.0000 ± 0.0059 0.0000 ± 0.0011 * Ni 0.0237 ± 0.0215 0.0054 ± 0.0049 0.0010 ± 0.0009 Cu 0.3684 ± 0.0328 0.0843 ± 0.0077 0.0153 ± 0.0021 Zn 0.1074 ± 0.0237 0.0246 ± 0.0055 0.0045 ± 0.0011 * Ga 0.0000 ± 0.0136 0.0000 ± 0.0031 0.0000 ± 0.0006 * Ge 0.0034 ± 0.0102 0.0008 ± 0.0023 0.0001 ± 0.0004 * As 0.0000 ± 0.0102 0.0000 ± 0.0023 0.0000 ± 0.0004 * Se 0.0170 ± 0.0090 0.0039 ± 0.0021 0.0007 ± 0.0004 Br 0.0576 ± 0.0090 0.0132 ± 0.0021 0.0024 ± 0.0004 * Rb 0.0181 ± 0.0102 0.0041 ± 0.0023 0.0008 ± 0.0004 Sr 0.0599 ± 0.0124 0.0137 ± 0.0029 0.0025 ± 0.0006 * Y 0.0316 ± 0.0147 0.0072 ± 0.0034 0.0013 ± 0.0006 * Zr 0.0226 ± 0.0181 0.0052 ± 0.0041 0.0009 ± 0.0008 * Mo 0.0113 ± 0.0249 0.0026 ± 0.0057 0.0005 ± 0.0010 * Pd 0.0147 ± 0.0170 0.0034 ± 0.0039 0.0006 ± 0.0007 * Ag 0.0079 ± 0.0158 0.0018 ± 0.0036 0.0003 ± 0.0007 * Cd 0.0068 ± 0.0158 0.0016 ± 0.0036 0.0003 ± 0.0007 * In 0.0000 ± 0.0158 0.0000 ± 0.0036 0.0000 ± 0.0007 Sn 0.0712 ± 0.0226 0.0163 ± 0.0052 0.0030 ± 0.0010 * Sb 0.0000 ± 0.0237 0.0000 ± 0.0054 0.0000 ± 0.0010 * Ba 0.0192 ± 0.0271 0.0044 ± 0.0062 0.0008 ± 0.0011 * La 0.0045 ± 0.0282 0.0010 ± 0.0065 0.0002 ± 0.0012 * Hg 0.0226 ± 0.0215 0.0052 ± 0.0049 0.0009 ± 0.0009 * Pb 0.0497 ± 0.0271 0.0114 ± 0.0062 0.0021 ± 0.0011

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M Hill Report Number: 08-361

=======================================================================

Lab ID: 08-T5231 Client ID: HS-100608 Site: Winkelman Sample Date: 10/ 6/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 389. ± 10. 16.21 ± 1.674

XRF * Na 2.740 ± 1.016 0.7044 ± 0.2618 0.1142 ± 0.0438 Mg 2.923 ± 0.4509 0.7515 ± 0.1175 0.1218 ± 0.0224 Al 15.42 ± 1.125 3.965 ± 0.3068 0.6427 ± 0.0796 Si 40.79 ± 2.606 10.49 ± 0.7221 1.700 ± 0.2017 * P 0.0407 ± 0.0271 0.0105 ± 0.0070 0.0017 ± 0.0011 S 9.632 ± 0.5028 2.476 ± 0.1441 0.4013 ± 0.0453 Cl 0.2644 ± 0.0407 0.0680 ± 0.0106 0.0110 ± 0.0020 K 5.364 ± 0.2780 1.379 ± 0.0798 0.2235 ± 0.0252 Ca 13.89 ± 1.101 3.570 ± 0.2974 0.5787 ± 0.0738 Ti 0.8870 ± 0.0463 0.2280 ± 0.0133 0.0370 ± 0.0042 * V 0.0000 ± 0.0124 0.0000 ± 0.0032 0.0000 ± 0.0005 * Cr 0.0124 ± 0.0068 0.0032 ± 0.0017 0.0005 ± 0.0003 Mn 0.1254 ± 0.0124 0.0322 ± 0.0033 0.0052 ± 0.0007 Fe 9.424 ± 0.4735 2.423 ± 0.1367 0.3927 ± 0.0439 * Co 0.0000 ± 0.0463 0.0000 ± 0.0119 0.0000 ± 0.0019 * Ni 0.0497 ± 0.0249 0.0128 ± 0.0064 0.0021 ± 0.0011 Cu 1.111 ± 0.0994 0.2856 ± 0.0266 0.0463 ± 0.0062 Zn 0.6656 ± 0.0723 0.1711 ± 0.0191 0.0277 ± 0.0041 * Ga 0.0011 ± 0.0158 0.0003 ± 0.0041 0.0000 ± 0.0007 * Ge 0.0000 ± 0.0124 0.0000 ± 0.0032 0.0000 ± 0.0005 As 0.3300 ± 0.0384 0.0848 ± 0.0101 0.0137 ± 0.0021 * Se 0.0226 ± 0.0113 0.0058 ± 0.0029 0.0009 ± 0.0005 Br 0.0384 ± 0.0113 0.0099 ± 0.0029 0.0016 ± 0.0005 * Rb 0.0215 ± 0.0124 0.0055 ± 0.0032 0.0009 ± 0.0005 Sr 0.0915 ± 0.0158 0.0235 ± 0.0041 0.0038 ± 0.0008 * Y 0.0000 ± 0.0170 0.0000 ± 0.0044 0.0000 ± 0.0007 * Zr 0.0396 ± 0.0215 0.0102 ± 0.0055 0.0016 ± 0.0009 * Mo 0.0396 ± 0.0282 0.0102 ± 0.0073 0.0016 ± 0.0012 * Pd 0.0000 ± 0.0192 0.0000 ± 0.0049 0.0000 ± 0.0008 * Ag 0.0011 ± 0.0181 0.0003 ± 0.0046 0.0000 ± 0.0008 * Cd 0.0113 ± 0.0170 0.0029 ± 0.0044 0.0005 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0044 0.0000 ± 0.0007 * Sn 0.0667 ± 0.0237 0.0171 ± 0.0061 0.0028 ± 0.0010 * Sb 0.0000 ± 0.0260 0.0000 ± 0.0067 0.0000 ± 0.0011 * Ba 0.0124 ± 0.0373 0.0032 ± 0.0096 0.0005 ± 0.0016 * La 0.0000 ± 0.0407 0.0000 ± 0.0105 0.0000 ± 0.0017 * Hg 0.0000 ± 0.0249 0.0000 ± 0.0064 0.0000 ± 0.0010 Pb 0.4814 ± 0.0452 0.1237 ± 0.0120 0.0201 ± 0.0028

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

=======================================================================

Lab ID: 08-T4469 Client ID: MY-091208 Site: Hayden Sample Date: 9/12/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 901. ± 10. 37.54 ± 3.777

XRF * Na 2.149 ± 1.367 0.2385 ± 0.1518 0.0896 ± 0.0577 Mg 9.593 ± 1.049 1.065 ± 0.1170 0.3997 ± 0.0592 Al 43.18 ± 3.259 4.792 ± 0.3656 1.799 ± 0.2254 Si 109.6 ± 7.307 12.17 ± 0.8221 4.568 ± 0.5490 P 0.1390 ± 0.0384 0.0154 ± 0.0043 0.0058 ± 0.0017 S 10.92 ± 0.8181 1.212 ± 0.0918 0.4549 ± 0.0568 Cl 0.1785 ± 0.0429 0.0198 ± 0.0048 0.0074 ± 0.0019 K 15.91 ± 0.8147 1.766 ± 0.0925 0.6629 ± 0.0745 Ca 31.56 ± 1.613 3.503 ± 0.1831 1.315 ± 0.1477 Ti 2.701 ± 0.1367 0.2997 ± 0.0155 0.1125 ± 0.0126 * V 0.0655 ± 0.0316 0.0073 ± 0.0035 0.0027 ± 0.0013 * Cr 0.0226 ± 0.0090 0.0025 ± 0.0010 0.0009 ± 0.0004 Mn 0.6825 ± 0.0362 0.0758 ± 0.0041 0.0284 ± 0.0032 Fe 27.49 ± 1.377 3.051 ± 0.1566 1.146 ± 0.1281 * Co 0.0000 ± 0.1198 0.0000 ± 0.0133 0.0000 ± 0.0050 * Ni 0.0599 ± 0.0249 0.0066 ± 0.0028 0.0025 ± 0.0011 Cu 2.874 ± 0.2237 0.3189 ± 0.0251 0.1197 ± 0.0152 Zn 0.3085 ± 0.0328 0.0342 ± 0.0037 0.0129 ± 0.0019 * Ga 0.0000 ± 0.0158 0.0000 ± 0.0018 0.0000 ± 0.0007 * Ge 0.0000 ± 0.0113 0.0000 ± 0.0013 0.0000 ± 0.0005 As 0.1311 ± 0.0282 0.0145 ± 0.0031 0.0055 ± 0.0013 * Se 0.0170 ± 0.0102 0.0019 ± 0.0011 0.0007 ± 0.0004 Br 0.0554 ± 0.0102 0.0061 ± 0.0011 0.0023 ± 0.0005 Rb 0.0972 ± 0.0136 0.0108 ± 0.0015 0.0040 ± 0.0007 Sr 0.2023 ± 0.0181 0.0224 ± 0.0020 0.0084 ± 0.0011 * Y 0.0000 ± 0.0170 0.0000 ± 0.0019 0.0000 ± 0.0007 Zr 0.0848 ± 0.0215 0.0094 ± 0.0024 0.0035 ± 0.0010 * Mo 0.0045 ± 0.0271 0.0005 ± 0.0030 0.0002 ± 0.0011 * Pd 0.0000 ± 0.0192 0.0000 ± 0.0021 0.0000 ± 0.0008 * Ag 0.0023 ± 0.0181 0.0003 ± 0.0020 0.0001 ± 0.0008 * Cd 0.0452 ± 0.0181 0.0050 ± 0.0020 0.0019 ± 0.0008 * In 0.0000 ± 0.0181 0.0000 ± 0.0020 0.0000 ± 0.0008 * Sn 0.0328 ± 0.0237 0.0036 ± 0.0026 0.0014 ± 0.0010 * Sb 0.0000 ± 0.0260 0.0000 ± 0.0029 0.0000 ± 0.0011 * Ba 0.1503 ± 0.0791 0.0167 ± 0.0088 0.0063 ± 0.0034 * La 0.0000 ± 0.0870 0.0000 ± 0.0097 0.0000 ± 0.0036 * Hg 0.0000 ± 0.0237 0.0000 ± 0.0026 0.0000 ± 0.0010 Pb 0.3266 ± 0.0384 0.0362 ± 0.0043 0.0136 ± 0.0021

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

=======================================================================

Lab ID: 08-T4470 Client ID: MY-091808 Site: Hayden Sample Date: 9/18/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 640. ± 10. 26.67 ± 2.699

XRF * Na 1.572 ± 1.104 0.2456 ± 0.1725 0.0655 ± 0.0465 Mg 4.739 ± 0.6068 0.7405 ± 0.0955 0.1975 ± 0.0321 Al 16.28 ± 1.214 2.544 ± 0.1938 0.6785 ± 0.0846 Si 44.92 ± 2.918 7.018 ± 0.4689 1.872 ± 0.2232 * P 0.0825 ± 0.0294 0.0129 ± 0.0046 0.0034 ± 0.0013 S 18.05 ± 1.321 2.820 ± 0.2111 0.7519 ± 0.0932 Cl 0.2237 ± 0.0441 0.0350 ± 0.0069 0.0093 ± 0.0021 K 7.808 ± 0.4023 1.220 ± 0.0657 0.3253 ± 0.0366 Ca 14.17 ± 1.127 2.214 ± 0.1794 0.5904 ± 0.0754 Ti 1.745 ± 0.0893 0.2726 ± 0.0146 0.0727 ± 0.0082 * V 0.0147 ± 0.0215 0.0023 ± 0.0034 0.0006 ± 0.0009 Cr 0.0249 ± 0.0079 0.0039 ± 0.0012 0.0010 ± 0.0003 Mn 0.2531 ± 0.0170 0.0396 ± 0.0027 0.0105 ± 0.0013 Fe 16.00 ± 0.8023 2.500 ± 0.1313 0.6667 ± 0.0746 * Co 0.0000 ± 0.0723 0.0000 ± 0.0113 0.0000 ± 0.0030 * Ni 0.0249 ± 0.0237 0.0039 ± 0.0037 0.0010 ± 0.0010 Cu 3.305 ± 0.1763 0.5164 ± 0.0287 0.1377 ± 0.0156 Zn 0.9955 ± 0.0655 0.1556 ± 0.0105 0.0415 ± 0.0050 * Ga 0.0000 ± 0.0158 0.0000 ± 0.0025 0.0000 ± 0.0007 * Ge 0.0000 ± 0.0113 0.0000 ± 0.0018 0.0000 ± 0.0005 As 0.2972 ± 0.0633 0.0464 ± 0.0099 0.0124 ± 0.0029 Se 0.0350 ± 0.0102 0.0055 ± 0.0016 0.0015 ± 0.0004 * Br 0.0181 ± 0.0102 0.0028 ± 0.0016 0.0008 ± 0.0004 * Rb 0.0271 ± 0.0113 0.0042 ± 0.0018 0.0011 ± 0.0005 Sr 0.0588 ± 0.0136 0.0092 ± 0.0021 0.0024 ± 0.0006 * Y 0.0000 ± 0.0158 0.0000 ± 0.0025 0.0000 ± 0.0007 * Zr 0.0520 ± 0.0192 0.0081 ± 0.0030 0.0022 ± 0.0008 * Mo 0.0407 ± 0.0260 0.0064 ± 0.0041 0.0017 ± 0.0011 * Pd 0.0000 ± 0.0181 0.0000 ± 0.0028 0.0000 ± 0.0008 * Ag 0.0249 ± 0.0170 0.0039 ± 0.0026 0.0010 ± 0.0007 * Cd 0.0475 ± 0.0170 0.0074 ± 0.0027 0.0020 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0026 0.0000 ± 0.0007 * Sn 0.0610 ± 0.0237 0.0095 ± 0.0037 0.0025 ± 0.0010 * Sb 0.0294 ± 0.0260 0.0046 ± 0.0041 0.0012 ± 0.0011 * Ba 0.0463 ± 0.0542 0.0072 ± 0.0085 0.0019 ± 0.0023 * La 0.0000 ± 0.0599 0.0000 ± 0.0094 0.0000 ± 0.0025 * Hg 0.0000 ± 0.0226 0.0000 ± 0.0035 0.0000 ± 0.0009 Pb 1.110 ± 0.0701 0.1734 ± 0.0113 0.0462 ± 0.0055 Bi 0.4317 ± 0.0520 0.0674 ± 0.0082 0.0180 ± 0.0028

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

=======================================================================

Lab ID: 08-T4471 Client ID: MY-092408 Site: Hayden Sample Date: 9/24/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 762. ± 10. 31.75 ± 3.202

XRF * Na 0.7548 ± 0.4407 0.0991 ± 0.0578 0.0315 ± 0.0186 Mg 2.631 ± 0.5221 0.3452 ± 0.0687 0.1096 ± 0.0244 Al 19.87 ± 1.490 2.607 ± 0.1986 0.8277 ± 0.1035 Si 55.18 ± 3.617 7.241 ± 0.4841 2.299 ± 0.2749 * P 0.0000 ± 0.0294 0.0000 ± 0.0039 0.0000 ± 0.0012 S 19.35 ± 1.424 2.539 ± 0.1898 0.8061 ± 0.1001 Cl 0.3232 ± 0.0520 0.0424 ± 0.0068 0.0135 ± 0.0026 K 12.49 ± 0.6384 1.639 ± 0.0865 0.5203 ± 0.0584 Ca 12.61 ± 1.022 1.655 ± 0.1358 0.5254 ± 0.0676 Ti 1.274 ± 0.0655 0.1671 ± 0.0089 0.0531 ± 0.0060 * V 0.0192 ± 0.0170 0.0025 ± 0.0022 0.0008 ± 0.0007 Cr 0.0282 ± 0.0079 0.0037 ± 0.0010 0.0012 ± 0.0003 Mn 0.2023 ± 0.0147 0.0265 ± 0.0020 0.0084 ± 0.0010 Fe 17.67 ± 0.8859 2.319 ± 0.1202 0.7364 ± 0.0824 * Co 0.0000 ± 0.0791 0.0000 ± 0.0104 0.0000 ± 0.0033 * Ni 0.0000 ± 0.0260 0.0000 ± 0.0034 0.0000 ± 0.0011 Cu 11.65 ± 0.5921 1.529 ± 0.0803 0.4854 ± 0.0545 Zn 2.251 ± 0.1277 0.2954 ± 0.0172 0.0938 ± 0.0108 * Ga 0.0000 ± 0.0215 0.0000 ± 0.0028 0.0000 ± 0.0009 * Ge 0.0000 ± 0.0124 0.0000 ± 0.0016 0.0000 ± 0.0005 As 0.5322 ± 0.0938 0.0698 ± 0.0123 0.0222 ± 0.0045 Se 0.0870 ± 0.0124 0.0114 ± 0.0016 0.0036 ± 0.0006 * Br 0.0192 ± 0.0124 0.0025 ± 0.0016 0.0008 ± 0.0005 Rb 0.0407 ± 0.0124 0.0053 ± 0.0016 0.0017 ± 0.0005 Sr 0.0848 ± 0.0147 0.0111 ± 0.0019 0.0035 ± 0.0007 * Y 0.0000 ± 0.0181 0.0000 ± 0.0024 0.0000 ± 0.0008 * Zr 0.0305 ± 0.0203 0.0040 ± 0.0027 0.0013 ± 0.0009 Mo 0.2226 ± 0.0305 0.0292 ± 0.0040 0.0093 ± 0.0016 * Pd 0.0000 ± 0.0192 0.0000 ± 0.0025 0.0000 ± 0.0008 * Ag 0.0362 ± 0.0181 0.0047 ± 0.0024 0.0015 ± 0.0008 * Cd 0.0497 ± 0.0181 0.0065 ± 0.0024 0.0021 ± 0.0008 * In 0.0000 ± 0.0181 0.0000 ± 0.0024 0.0000 ± 0.0008 * Sn 0.0644 ± 0.0249 0.0085 ± 0.0033 0.0027 ± 0.0011 Sb 0.0893 ± 0.0271 0.0117 ± 0.0036 0.0037 ± 0.0012 Ba 0.1480 ± 0.0463 0.0194 ± 0.0061 0.0062 ± 0.0020 * La 0.0000 ± 0.0508 0.0000 ± 0.0067 0.0000 ± 0.0021 * Hg 0.0000 ± 0.0260 0.0000 ± 0.0034 0.0000 ± 0.0011 Pb 3.032 ± 0.1627 0.3979 ± 0.0220 0.1263 ± 0.0143 Bi 0.8226 ± 0.0780 0.1080 ± 0.0103 0.0343 ± 0.0047

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

=======================================================================

Lab ID: 08-T4472 Client ID: MY-093008 Site: Hayden Sample Date: 9/30/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 1,244. ± 10. 51.83 ± 5.200

XRF * Na 0.0000 ± 1.839 0.0000 ± 0.1478 0.0000 ± 0.0766 * Mg 1.680 ± 0.7469 0.1351 ± 0.0601 0.0700 ± 0.0319 Al 18.54 ± 1.626 1.491 ± 0.1313 0.7726 ± 0.1028 Si 57.88 ± 4.051 4.653 ± 0.3278 2.412 ± 0.2944 * P 0.0000 ± 0.0972 0.0000 ± 0.0078 0.0000 ± 0.0040 S 89.84 ± 6.749 7.221 ± 0.5457 3.743 ± 0.4682 * Cl 0.2814 ± 0.1729 0.0226 ± 0.0139 0.0117 ± 0.0073 K 11.20 ± 0.5853 0.9005 ± 0.0476 0.4668 ± 0.0527 Ca 21.07 ± 1.096 1.694 ± 0.0892 0.8781 ± 0.0990 Ti 2.170 ± 0.1130 0.1744 ± 0.0092 0.0904 ± 0.0102 * V 0.0848 ± 0.0294 0.0068 ± 0.0024 0.0035 ± 0.0013 Cr 0.0960 ± 0.0136 0.0077 ± 0.0011 0.0040 ± 0.0007 Mn 0.2475 ± 0.0215 0.0199 ± 0.0017 0.0103 ± 0.0014 Fe 54.24 ± 2.715 4.360 ± 0.2211 2.260 ± 0.2527 * Co 0.0000 ± 0.2339 0.0000 ± 0.0188 0.0000 ± 0.0097 * Ni 0.0000 ± 0.0294 0.0000 ± 0.0024 0.0000 ± 0.0012 Cu 91.70 ± 6.518 7.371 ± 0.5273 3.821 ± 0.4688 Zn 17.12 ± 0.8701 1.376 ± 0.0708 0.7133 ± 0.0800 * Ga 0.0000 ± 0.0780 0.0000 ± 0.0063 0.0000 ± 0.0032 * Ge 0.0000 ± 0.0147 0.0000 ± 0.0012 0.0000 ± 0.0006 As 3.730 ± 0.2350 0.2998 ± 0.0190 0.1554 ± 0.0184 Se 1.099 ± 0.0588 0.0884 ± 0.0048 0.0458 ± 0.0052 * Br 0.0000 ± 0.0463 0.0000 ± 0.0037 0.0000 ± 0.0019 Rb 0.1819 ± 0.0181 0.0146 ± 0.0015 0.0076 ± 0.0011 Sr 0.0870 ± 0.0147 0.0070 ± 0.0012 0.0036 ± 0.0007 * Y 0.0655 ± 0.0497 0.0053 ± 0.0040 0.0027 ± 0.0021 Zr 0.1198 ± 0.0215 0.0096 ± 0.0017 0.0050 ± 0.0010 Mo 2.041 ± 0.1074 0.1640 ± 0.0087 0.0850 ± 0.0096 * Pd 0.0000 ± 0.0215 0.0000 ± 0.0017 0.0000 ± 0.0009 Ag 0.2396 ± 0.0249 0.0193 ± 0.0020 0.0100 ± 0.0014 Cd 0.4870 ± 0.0328 0.0392 ± 0.0027 0.0203 ± 0.0024 * In 0.0565 ± 0.0203 0.0045 ± 0.0016 0.0024 ± 0.0009 Sn 0.1458 ± 0.0282 0.0117 ± 0.0023 0.0061 ± 0.0013 Sb 0.1288 ± 0.0305 0.0104 ± 0.0025 0.0054 ± 0.0014 Ba 0.7029 ± 0.0836 0.0565 ± 0.0067 0.0293 ± 0.0046 * La 0.0000 ± 0.0893 0.0000 ± 0.0072 0.0000 ± 0.0037 * Hg 0.0000 ± 0.0328 0.0000 ± 0.0026 0.0000 ± 0.0014 Pb 23.22 ± 1.170 1.867 ± 0.0952 0.9676 ± 0.1083 Bi 7.154 ± 0.5435 0.5751 ± 0.0439 0.2981 ± 0.0374

* - Concentration is less than three times the uncertaintyClient: C033 - CH2M HILL Report Number: 08-361

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Lab ID: 08-T4459 Client ID: MY-100608 Site: Hayden Sample Date: 10/ 6/08 Filter Lot #: 8070002 Volume: 24.00 +- 2.400 m3 Deposit Area: 11.3 cm2 Size Fraction: PM10

Analyte μg/filter percent μg/m3

Gravimetry Net Mass 735. ± 10. 30.62 ± 3.091

XRF * Na 0.5345 ± 0.4023 0.0727 ± 0.0547 0.0223 ± 0.0169 Mg 5.421 ± 0.6678 0.7375 ± 0.0914 0.2259 ± 0.0358 Al 22.83 ± 1.703 3.106 ± 0.2355 0.9511 ± 0.1187 Si 61.34 ± 4.015 8.345 ± 0.5579 2.556 ± 0.3055 * P 0.0282 ± 0.0294 0.0038 ± 0.0040 0.0012 ± 0.0012 S 13.29 ± 0.9820 1.808 ± 0.1358 0.5537 ± 0.0688 Cl 0.5119 ± 0.0520 0.0696 ± 0.0071 0.0213 ± 0.0030 K 9.164 ± 0.4712 1.247 ± 0.0663 0.3818 ± 0.0429 Ca 17.35 ± 0.8927 2.360 ± 0.1256 0.7227 ± 0.0813 Ti 2.026 ± 0.1028 0.2757 ± 0.0145 0.0844 ± 0.0095 * V 0.0701 ± 0.0249 0.0095 ± 0.0034 0.0029 ± 0.0011 * Cr 0.0192 ± 0.0068 0.0026 ± 0.0009 0.0008 ± 0.0003 Mn 0.2983 ± 0.0192 0.0406 ± 0.0027 0.0124 ± 0.0015 Fe 23.28 ± 1.166 3.167 ± 0.1644 0.9699 ± 0.1085 * Co 0.0000 ± 0.1017 0.0000 ± 0.0138 0.0000 ± 0.0042 * Ni 0.0452 ± 0.0226 0.0061 ± 0.0031 0.0019 ± 0.0010 Cu 6.009 ± 0.3108 0.8176 ± 0.0437 0.2504 ± 0.0282 Zn 0.7594 ± 0.0531 0.1033 ± 0.0074 0.0316 ± 0.0039 * Ga 0.0000 ± 0.0147 0.0000 ± 0.0020 0.0000 ± 0.0006 * Ge 0.0000 ± 0.0102 0.0000 ± 0.0014 0.0000 ± 0.0004 As 0.2271 ± 0.0350 0.0309 ± 0.0048 0.0095 ± 0.0017 Se 0.0396 ± 0.0102 0.0054 ± 0.0014 0.0016 ± 0.0005 Br 0.0497 ± 0.0090 0.0068 ± 0.0012 0.0021 ± 0.0004 * Rb 0.0249 ± 0.0113 0.0034 ± 0.0015 0.0010 ± 0.0005 Sr 0.1220 ± 0.0147 0.0166 ± 0.0020 0.0051 ± 0.0008 * Y 0.0011 ± 0.0147 0.0002 ± 0.0020 0.0000 ± 0.0006 Zr 0.0757 ± 0.0181 0.0103 ± 0.0025 0.0032 ± 0.0008 Mo 0.1164 ± 0.0260 0.0158 ± 0.0035 0.0048 ± 0.0012 * Pd 0.0000 ± 0.0181 0.0000 ± 0.0025 0.0000 ± 0.0008 * Ag 0.0045 ± 0.0170 0.0006 ± 0.0023 0.0002 ± 0.0007 * Cd 0.0102 ± 0.0158 0.0014 ± 0.0022 0.0004 ± 0.0007 * In 0.0000 ± 0.0170 0.0000 ± 0.0023 0.0000 ± 0.0007 * Sn 0.0000 ± 0.0215 0.0000 ± 0.0029 0.0000 ± 0.0009 * Sb 0.0000 ± 0.0249 0.0000 ± 0.0034 0.0000 ± 0.0010 * Ba 0.0960 ± 0.0622 0.0131 ± 0.0085 0.0040 ± 0.0026 * La 0.0000 ± 0.0678 0.0000 ± 0.0092 0.0000 ± 0.0028 * Hg 0.0011 ± 0.0215 0.0002 ± 0.0029 0.0000 ± 0.0009 Pb 0.4791 ± 0.0418 0.0652 ± 0.0058 0.0200 ± 0.0026

* - Concentration is less than three times the uncertainty