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Burlington WA

Corporate Office

1620 S Walnut St - 98233

800.755.9295 $ 360.757.1400 Bellingham WA

Microbiology 805 Orchard Dr Ste 4 - 98225

360.671.0688 Portland OR

Microbiology/Chemistry 9150 SW Pioneer Ct Ste W- 97070

503.682.7802 Data Report

Client Name: Alcoa, Inc.-Wenatchee Works

6200 Malaga/Alcoa Hwy

Malaga, WA 98828

Reference Number: 11-08102

Project: HAP Metals, Hex Chromium

Report Date: 6/21/11

Date Received:

Reviewed by:

5/31/11

Sample Description:

Lab Number: 17639

5/16 Ore Sample Date: 5/16/11

Collected By: David G. Hulse

CAS ID# Parameter Result PQL MRL MDL Units DF Method Analyzed Analyst Batch Comment

7440-41-7 BERYLLIUM ND 0.08 0.08 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-38-2 ARSENIC 27 1.0 1.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-43-9 CADMIUM 1.5 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-47-3 CHROMIUM ND 0.6 0.6 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-92-1 LEAD 9.0 0.24 0.24 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-96-5 MANGANESE ND 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-02-0 NICKEL 85 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7782-49-2 SELENIUM ND 2.0 2.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-36-0 ANTIMONY 0.9 0.4 0.4 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-48-4 COBALT 0.7 0.2 0.2 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/16/11 LJH HEXCR-110616 Sample Description:

Lab Number: 17640

5/17 Ore Sample Date: 5/17/11

Collected By: David G. Hulse

CAS ID# Parameter Result PQL MRL MDL Units DF Method Analyzed Analyst Batch Comment

7440-41-7 BERYLLIUM 0.08 0.08 0.08 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-38-2 ARSENIC 25.6 1.0 1.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-43-9 CADMIUM 2.0 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-47-3 CHROMIUM ND 0.6 0.6 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-92-1 LEAD 11 0.24 0.24 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-96-5 MANGANESE ND 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-02-0 NICKEL 133 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7782-49-2 SELENIUM ND 2.0 2.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-36-0 ANTIMONY 1.03 0.4 0.4 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-48-4 COBALT 3.1 0.2 0.2 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/16/11 LJH HEXCR-110616

If you have any questions concerning this report contact Lawrence Henderson at the above phone number.

Form: cRslt_2.rpt

PQL = Practical Quantitation Limit is the lowest level that can be achieved within specified limits of precision and accuracy during routine laboratory operating conditions.

Notes:

ND = Not detected above the listed practical quantitation limit (PQL) or not above the Method Detection Limit (MDL), if requested. D.F. - Dilution Factor
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Reference Number:

Report Date: 6/21/11

11-08102

Data Report

Sample Description:

Lab Number: 17641

5/18 Ore Sample Date: 5/18/11

Collected By: David G. Hulse

CAS ID# Parameter Result PQL MRL MDL Units DF Method Analyzed Analyst Batch Comment

7440-41-7 BERYLLIUM 0.09 0.08 0.08 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-38-2 ARSENIC 30 1.0 1.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-43-9 CADMIUM 2.0 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-47-3 CHROMIUM ND 0.6 0.6 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-92-1 LEAD 11 0.24 0.24 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-96-5 MANGANESE 0.5 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-02-0 NICKEL 121 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7782-49-2 SELENIUM ND 2.0 2.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-36-0 ANTIMONY 0.8 0.4 0.4 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-48-4 COBALT 1.0 0.2 0.2 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

18540-29-9 HEXAVALENT CHROMIUM 0.0033 0.0025 0.0025 ug/g 5.00 218.6 6/16/11 LJH HEXCR-110616 Sample Description:

Lab Number: 17642

5/19 Ore Sample Date: 5/19/11

Collected By: David G. Hulse

CAS ID# Parameter Result PQL MRL MDL Units DF Method Analyzed Analyst Batch Comment

7440-41-7 BERYLLIUM 0.08 0.08 0.08 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-38-2 ARSENIC 17 1.0 1.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-43-9 CADMIUM 1.5 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-47-3 CHROMIUM ND 0.6 0.6 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-92-1 LEAD 8.7 0.24 0.24 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-96-5 MANGANESE 0.5 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-02-0 NICKEL 89 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7782-49-2 SELENIUM ND 2.0 2.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-36-0 ANTIMONY 1.1 0.4 0.4 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-48-4 COBALT 0.8 0.2 0.2 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

18540-29-9 HEXAVALENT CHROMIUM 0.0034 0.0025 0.0025 ug/g 5.00 218.6 6/16/11 LJH HEXCR-110616 Sample Description:

Lab Number: 17643

5/20 Ore Sample Date: 5/20/11

Collected By: David G. Hulse

CAS ID# Parameter Result PQL MRL MDL Units DF Method Analyzed Analyst Batch Comment

7440-41-7 BERYLLIUM 0.09 0.08 0.08 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-38-2 ARSENIC 25 1.0 1.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-43-9 CADMIUM 2.2 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-47-3 CHROMIUM ND 0.6 0.6 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-92-1 LEAD 13 0.24 0.24 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7439-96-5 MANGANESE 0.7 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-02-0 NICKEL 150 0.5 0.5 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

Form: cRslt_2.rpt

PQL = Practical Quantitation Limit is the lowest level that can be achieved within specified limits of precision and accuracy during routine laboratory operating conditions.

Notes:

ND = Not detected above the listed practical quantitation limit (PQL) or not above the Method Detection Limit (MDL), if requested. D.F. - Dilution Factor
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Reference Number:

Report Date: 6/21/11

11-08102

Data Report

7782-49-2 SELENIUM ND 2.0 2.0 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-36-0 ANTIMONY 0.9 0.4 0.4 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

7440-48-4 COBALT 1.2 0.2 0.2 mg/Kg 20.00 6020A/3051 6/13/11 MVP 6020_110613

18540-29-9 HEXAVALENT CHROMIUM 0.0026 0.0025 0.0025 ug/g 5.00 218.6 6/16/11 LJH HEXCR-110616

Form: cRslt_2.rpt

PQL = Practical Quantitation Limit is the lowest level that can be achieved within specified limits of precision and accuracy during routine laboratory operating conditions.

Notes:

ND = Not detected above the listed practical quantitation limit (PQL) or not above the Method Detection Limit (MDL), if requested. D.F. - Dilution Factor