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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: Aluminum Co. of America

PO BOX 150

Massena, NY 13662

Reference Number: 11-08082

Project: HAP Metals, Hex Chromium

Report Date: 6/22/11

Date Received:

Reviewed by:

5/27/11

Sample Description:

Lab Number: 17595

Solid - 446B 5/2/2011 Sample Date: 5/2/11

Collected By: N. Polarolo

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

7440-41-7 BERYLLIUM ND 0.04 0.04 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-38-2 ARSENIC 13.9 0.5 0.5 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-43-9 CADMIUM 0.78 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-47-3 CHROMIUM 0.39 0.3 0.3 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-92-1 LEAD 7.4 0.12 0.12 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-96-5 MANGANESE 0.54 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-02-0 NICKEL 157 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7782-49-2 SELENIUM ND 1.0 1.0 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-36-0 ANTIMONY 0.23 0.1 0.1 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-48-4 COBALT 1.08 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/10/11 LJH HEXCRS-110610 Sample Description:

Lab Number: 17596

Solid - 446B 5/3/2011 Sample Date: 5/3/11

Collected By: N. Polarolo

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

7440-41-7 BERYLLIUM 0.4 0.04 0.04 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-38-2 ARSENIC 29.4 0.5 0.5 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-43-9 CADMIUM 1.1 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-47-3 CHROMIUM 0.54 0.3 0.3 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-92-1 LEAD 10.6 0.12 0.12 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-96-5 MANGANESE 0.58 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-02-0 NICKEL 257 .024 .024 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7782-49-2 SELENIUM ND 1.0 1.0 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-36-0 ANTIMONY 0.22 0.1 0.1 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-48-4 COBALT 1.8 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/10/11 LJH HEXCRS-110610

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: 6/22/11

11-08082

Data Report

Sample Description:

Lab Number: 17597

Solid - 446B 5/4/2011 Sample Date: 5/4/11

Collected By: N. Polarolo

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

7440-41-7 BERYLLIUM 0.59 0.04 0.04 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-38-2 ARSENIC 33.5 0.5 0.5 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-43-9 CADMIUM 1.47 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-47-3 CHROMIUM 0.49 0.3 0.3 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-92-1 LEAD 13 0.12 0.12 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-96-5 MANGANESE 0.85 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-02-0 NICKEL 405 0.24 .024 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7782-49-2 SELENIUM ND 1.0 1.0 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-36-0 ANTIMONY 0.59 0.1 0.1 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-48-4 COBALT 2.55 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/10/11 LJH HEXCRS-110610 Sample Description:

Lab Number: 17598

Solid - 446B 5/5/2011 Sample Date: 5/5/11

Collected By: N. Polarolo

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

7440-41-7 BERYLLIUM 0.29 0.04 0.04 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-38-2 ARSENIC 15.9 0.5 0.5 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-43-9 CADMIUM 1.15 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-47-3 CHROMIUM 0.42 0.3 0.3 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-92-1 LEAD 10.3 0.12 0.12 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-96-5 MANGANESE 0.51 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-02-0 NICKEL 161 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7782-49-2 SELENIUM ND 1.0 1.0 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-36-0 ANTIMONY 0.3 0.1 0.1 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-48-4 COBALT 1.06 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/10/11 LJH HEXCRS-110610 Sample Description:

Lab Number: 17599

Solid - 446B 5/6/2011 Sample Date: 5/6/11

Collected By: N. Polarolo

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

7440-41-7 BERYLLIUM 0.34 0.04 0.04 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-38-2 ARSENIC 18.4 0.5 0.5 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-43-9 CADMIUM 1.27 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-47-3 CHROMIUM 0.48 0.3 0.3 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-92-1 LEAD 10.5 0.12 0.12 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7439-96-5 MANGANESE 0.57 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-02-0 NICKEL 189 0.24 0.24 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

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: 6/22/11

11-08082

Data Report

7782-49-2 SELENIUM ND 1.0 1.0 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-36-0 ANTIMONY 0.33 0.1 0.1 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

7440-48-4 COBALT 1.27 0.05 0.05 mg/Kg 1.00 6020A/3051 6/9/11 MVP 6020_110609

18540-29-9 HEXAVALENT CHROMIUM ND 0.0025 0.0025 ug/g 5.00 218.6 6/10/11 LJH HEXCRS-110610 Sample Description:

Lab Number: 17600

Water - E77 Wetscrubber WA Sample Date: 5/26/11

Collected By: N. Polarolo

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

7440-48-4 COBALT 0.004 0.002 0.0001 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

18540-29-9 HEXAVALENT CHROMIUM ND IM 0.250 0.050 0.043 ug/L 5.00 218.6 6/10/11 LJH HEXCRS-110610 7440-41-7 BERYLLIUM 0.0008 0.0008 0.00004 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7440-47-3 CHROMIUM ND 0.006 0.0003 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7439-96-5 MANGANESE 0.039 0.020 0.001 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7440-02-0 NICKEL 0.168 0.020 0.001 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7440-38-2 ARSENIC 0.050 0.010 0.0005 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7782-49-2 SELENIUM 0.169 0.100 0.005 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7440-36-0 ANTIMONY ND 0.010 0.0005 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7440-43-9 CADMIUM ND 0.005 0.00025 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

7439-92-1 LEAD 0.014 0.010 0.0005 mg/L 20.00 6020A/3015 6/20/11 MVP 6020_110620

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