Page 1 of 3

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 Warrick Operations

P O Box 10

Newburgh, IN 47629

Reference Number: 11-08428

Project: HAP Metals, Hex Chromium

Report Date: 6/21/11

Date Received:

Reviewed by:

6/6/11

Sample Description:

Lab Number: 18314

May 9 Sample Date: 5/9/11

Collected By: C Allen

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

7440-41-7 BERYLLIUM 0.2 0.08 0.08 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-38-2 ARSENIC 14.2 1.0 1.0 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-43-9 CADMIUM 1.3 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-47-3 CHROMIUM 1.9 0.6 0.6 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-92-1 LEAD 14 0.24 0.24 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-96-5 MANGANESE 0.5 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-02-0 NICKEL 172 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7782-49-2 SELENIUM ND 2 2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-36-0 ANTIMONY 2 0.4 0.4 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-48-4 COBALT 1.8 0.2 0.2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

18540-29-9 HEXAVALENT CHROMIUM 0.0051 0.0025 0.0025 ug/g 5.00 218.6 6/17/11 LJH HEXCR-110617 Sample Description:

Lab Number: 18315

May 10 Sample Date: 5/10/11

Collected By: C Allen

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

7440-41-7 BERYLLIUM 0.2 0.08 0.08 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-38-2 ARSENIC 10.6 1.0 1.0 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-43-9 CADMIUM 1.4 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-47-3 CHROMIUM 1.8 0.6 0.6 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-92-1 LEAD 15 0.24 0.24 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-96-5 MANGANESE ND 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-02-0 NICKEL 149 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7782-49-2 SELENIUM ND 2 2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-36-0 ANTIMONY 2.3 0.4 0.4 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-48-4 COBALT 1.3 0.2 0.2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

18540-29-9 HEXAVALENT CHROMIUM 0.0070 0.0025 0.0025 ug/g 5.00 218.6 6/17/11 LJH HEXCR-110617

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
Page 2 of 3

Reference Number:

Report Date: 6/21/11

11-08428

Data Report

Sample Description:

Lab Number: 18316

May 11 Sample Date: 5/11/11

Collected By: C Allen

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

7440-41-7 BERYLLIUM 0.2 0.08 0.08 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-38-2 ARSENIC 10.4 1.0 1.0 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-43-9 CADMIUM 1.3 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-47-3 CHROMIUM 2.0 0.6 0.6 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-92-1 LEAD 13.5 0.24 0.24 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-96-5 MANGANESE 1.2 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-02-0 NICKEL 155 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7782-49-2 SELENIUM ND 2 2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-36-0 ANTIMONY 1.8 0.4 0.4 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-48-4 COBALT 1.3 0.2 0.2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

18540-29-9 HEXAVALENT CHROMIUM 0.0079 0.0025 0.0025 ug/g 5.00 218.6 6/17/11 LJH HEXCR-110617 Sample Description:

Lab Number: 18317

May 12 Sample Date: 5/12/11

Collected By: C Allen

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

7440-41-7 BERYLLIUM 0.2 0.08 0.08 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-38-2 ARSENIC 13.9 1.0 1.0 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-43-9 CADMIUM 1.6 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-47-3 CHROMIUM 1.6 0.6 0.6 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-92-1 LEAD 15.3 0.24 0.24 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-96-5 MANGANESE ND 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-02-0 NICKEL 124 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7782-49-2 SELENIUM ND 2 2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-36-0 ANTIMONY 2.3 0.4 0.4 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-48-4 COBALT 1.2 0.2 0.2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

18540-29-9 HEXAVALENT CHROMIUM 0.0046 0.0025 0.0025 ug/g 5.00 218.6 6/17/11 LJH HEXCR-110617 Sample Description:

Lab Number: 18318

May 13 Sample Date: 5/13/11

Collected By: C Allen

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

7440-41-7 BERYLLIUM 0.2 0.08 0.08 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-38-2 ARSENIC 13.1 1.0 1.0 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-43-9 CADMIUM 1.4 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-47-3 CHROMIUM 2.1 0.6 0.6 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-92-1 LEAD 14.7 0.24 0.24 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7439-96-5 MANGANESE ND 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-02-0 NICKEL 181 0.5 0.5 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

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
Page 3 of 3

Reference Number:

Report Date: 6/21/11

11-08428

Data Report

7782-49-2 SELENIUM ND 2 2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-36-0 ANTIMONY 1.8 0.4 0.4 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

7440-48-4 COBALT 1.5 0.2 0.2 mg/Kg 1.00 6020A/3051 6/14/11 MVP 6020_110614

18540-29-9 HEXAVALENT CHROMIUM 0.0076 0.0025 0.0025 ug/g 5.00 218.6 6/17/11 LJH HEXCR-110617

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
Page 1 of 4

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

Report Date: 06/22/11

QUALITY CONTROL REPORT

Reference Number:

SAMPLE INDEPENDENT

Laboratory Fortified Blank 11-08428

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110614 ANTIMONY 0.971 1.00 mg/L 6020A 97 70-130 LFB

ARSENIC 0.969 1.00 mg/L 6020A 97 70-130

BERYLLIUM 0.965 1.00 mg/L 6020A 97 85-115

CADMIUM 0.952 1.00 mg/L 6020A 95 70-130

CHROMIUM 0.963 1.00 mg/L 6020A 96 70-130

COBALT 0.960 1.00 mg/L 6020A 96 85-115

LEAD 0.956 1.00 mg/L 6020A 96 70-130

MANGANESE 0.985 1.00 mg/L 6020A 99 70-130

NICKEL 0.952 1.00 mg/L 6020A 95 70-130

SELENIUM 0.958 1.00 mg/L 6020A 96 70-130

% Recovery = (Result of Analysis)/(True Value) * 100

NA = Indicates % Recovery could not be calculated.

LFB: Laboratory Fortified Blank, an aliquot of reagent matrix to which known quantities of method analytes are added in the lab. The LFB is analyzed exactly like a sample, and its purpose is to 

determine whether method performance is within accepted control limits.

QCS: Quality Control Sample, a solution containing known concentrations of method analytes which is used to fortify an aliquot of reagent matrix. The QCS is obtained from an external source and 

is used to check lab performance.

*Notation:

FORM: QC Independent

MB or LRB: Method Blank or Laboratory Reagent Blank, an aliquot of reagent matrix is analyzed exactly like a sample, and its purpose is to determine if there is background contamination.
Page 2 of 4

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

Report Date: 06/22/11

QUALITY CONTROL REPORT

Reference Number:

SAMPLE INDEPENDENT

Laboratory Reagent Blank 11-08428

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110614 ANTIMONY ND mg/L 6020A 0.00000 LRB

ARSENIC ND mg/L 6020A 0.00000

BERYLLIUM ND mg/L 6020A 0.00200

CADMIUM ND mg/L 6020A 0.00000

CHROMIUM ND mg/L 6020A 0.00000

COBALT ND mg/L 6020A 0.00000

LEAD ND mg/L 6020A 0.00000

MANGANESE ND mg/L 6020A 0.00000

NICKEL ND mg/L 6020A 0.00000

SELENIUM ND mg/L 6020A 0.00000

HEXCR-110617 HEXAVALENT CHROMIUM ND ng/L 218.6 0.00000 LRB

% Recovery = (Result of Analysis)/(True Value) * 100

NA = Indicates % Recovery could not be calculated.

LFB: Laboratory Fortified Blank, an aliquot of reagent matrix to which known quantities of method analytes are added in the lab. The LFB is analyzed exactly like a sample, and its purpose is to 

determine whether method performance is within accepted control limits.

QCS: Quality Control Sample, a solution containing known concentrations of method analytes which is used to fortify an aliquot of reagent matrix. The QCS is obtained from an external source and 

is used to check lab performance.

*Notation:

FORM: QC Independent

MB or LRB: Method Blank or Laboratory Reagent Blank, an aliquot of reagent matrix is analyzed exactly like a sample, and its purpose is to determine if there is background contamination.
Page 3 of 4

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

Report Date: 06/22/11

QUALITY CONTROL REPORT

Reference Number:

SAMPLE INDEPENDENT

Method Blank 11-08428

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110614 ANTIMONY ND mg/L 6020A 0.00000 MB

ARSENIC ND mg/L 6020A 0.00030

BERYLLIUM ND mg/L 6020A 0.00200

CADMIUM ND mg/L 6020A 0.00030

CHROMIUM ND mg/L 6020A 0.00030

COBALT ND mg/L 6020A 0.00000

LEAD ND mg/L 6020A 0.00030

MANGANESE ND mg/L 6020A 0.00030

NICKEL ND mg/L 6020A 0.00030

SELENIUM ND mg/L 6020A 0.00030

HEXCR-110617 HEXAVALENT CHROMIUM ND ng/L 218.6 0.00000 MB

% Recovery = (Result of Analysis)/(True Value) * 100

NA = Indicates % Recovery could not be calculated.

LFB: Laboratory Fortified Blank, an aliquot of reagent matrix to which known quantities of method analytes are added in the lab. The LFB is analyzed exactly like a sample, and its purpose is to 

determine whether method performance is within accepted control limits.

QCS: Quality Control Sample, a solution containing known concentrations of method analytes which is used to fortify an aliquot of reagent matrix. The QCS is obtained from an external source and 

is used to check lab performance.

*Notation:

FORM: QC Independent

MB or LRB: Method Blank or Laboratory Reagent Blank, an aliquot of reagent matrix is analyzed exactly like a sample, and its purpose is to determine if there is background contamination.
Page 4 of 4

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

Report Date: 06/22/11

QUALITY CONTROL REPORT

Reference Number:

SAMPLE INDEPENDENT

Quality Control Sample 11-08428

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110614 ANTIMONY 0.039 0.040 mg/L 6020A 98 70-130 QCS

ARSENIC 0.040 0.040 mg/L 6020A 100 70-130

BERYLLIUM 0.039 0.040 mg/L 6020A 98 85-115

CADMIUM 0.039 0.040 mg/L 6020A 98 70-130

CHROMIUM 0.040 0.040 mg/L 6020A 100 70-130

COBALT 0.039 0.040 mg/L 6020A 98 85-115

LEAD 0.040 0.040 mg/L 6020A 100 70-130

MANGANESE 0.040 0.040 mg/L 6020A 100 70-130

NICKEL 0.039 0.040 mg/L 6020A 98 70-130

SELENIUM 0.039 0.040 mg/L 6020A 98 70-130

HEXCR-110617 HEXAVALENT CHROMIUM 682 668 ng/L 218.6 102 85-115 QCS

% Recovery = (Result of Analysis)/(True Value) * 100

NA = Indicates % Recovery could not be calculated.

LFB: Laboratory Fortified Blank, an aliquot of reagent matrix to which known quantities of method analytes are added in the lab. The LFB is analyzed exactly like a sample, and its purpose is to 

determine whether method performance is within accepted control limits.

QCS: Quality Control Sample, a solution containing known concentrations of method analytes which is used to fortify an aliquot of reagent matrix. The QCS is obtained from an external source and 

is used to check lab performance.

*Notation:

FORM: QC Independent

MB or LRB: Method Blank or Laboratory Reagent Blank, an aliquot of reagent matrix is analyzed exactly like a sample, and its purpose is to determine if there is background contamination.
Page 1 of 2

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 QUALITY CONTROL REPORT 11-08428

Duplicate, Matrix Spike/Matrix Spike Duplicate and Confirmation Result Report Report Date: 6/22/2011

Reference Number:

SAMPLE DEPENDENT

Duplicate

Duplicate QC

Batch Sample Analyte Result Result Units %RPD Limits Qualifier Type Comments

6020_110614

 18235 ARSENIC 3.27 3.39 mg/Kg 3.6 0-50 DUP

 18235 CHROMIUM 0.69 0.69 mg/Kg 0.0 0-50 DUP

 18235 NICKEL 71.5 75.6 mg/Kg 5.6 0-50 DUP

 18235 LEAD 7.25 7.3 mg/Kg 0.7 0-50 DUP

 18235 COBALT 0.51 0.51 mg/Kg 0.0 0-20 DUP

 18240 BERYLLIUM 0.64 0.68 mg/Kg 6.1 0-20 DUP

 18240 ARSENIC 125 131 mg/Kg 4.7 0-50 DUP

 18240 CADMIUM 2.1 2.1 mg/Kg 0.0 0-50 DUP

 18240 CHROMIUM 9.8 10.2 mg/Kg 4.0 0-50 DUP

 18240 MANGANESE 8.0 8.4 mg/Kg 4.9 0-50 DUP

 18240 LEAD 59.5 62 mg/Kg 4.1 0-50 DUP

 18240 ANTIMONY 5.4 5.9 mg/Kg 8.8 0-50 DUP

 18240 COBALT 8.3 9.0 mg/Kg 8.1 0-20 DUP

 18314 BERYLLIUM 0.2 0.2 mg/Kg 0.0 0-20 DUP

 18314 ARSENIC 14.2 14.2 mg/Kg 0.0 0-50 DUP

 18314 CADMIUM 1.3 1.3 mg/Kg 0.0 0-50 DUP

 18314 CHROMIUM 1.9 1.9 mg/Kg 0.0 0-50 DUP

 18314 MANGANESE 0.5 0.5 mg/Kg 0.0 0-50 DUP

 18314 NICKEL 172 171 mg/Kg 0.6 0-50 DUP

 18314 LEAD 14 14 mg/Kg 0.0 0-50 DUP

 18314 ANTIMONY 2 1.9 mg/Kg 5.1 0-50 DUP

 18314 COBALT 1.8 1.8 mg/Kg 0.0 0-20 DUP

HEXCR-110617

 18318 HEXAVALENT CHROMIUM 0.0076 0.0086 ug/g 12.3 0-20 DUP

Matrix Spike (MS)/Matrix Spike Duplicate (MSD) analyses are used to determine the accuracy (MS) and precision (MSD) of a analytical method in a given sample matrix. Therefore, the usefulness of this report is limited to samples of 

similar matrices analyzed in the same analytical batch.

NA = Indicates %RPD could not be calculated

%RPD = Relative Percent Difference

Only Duplicate sample with detections are listed in this report
Page 2 of 2

Reference Number: 11-08428

Report Date: 6/22/2011

Matrix Spike Duplicate

Spike Spike Spike Percent Recovery QC

Batch Sample Analyte Result Result Result Conc Units MS MSD Limits %RPD Limits Qualifier Type Comments

6020_110614

 18235 BERYLLIUM ND 99.7 100 mg/Kg 100 70-130 NA 0-50 LFM

 18235 ARSENIC 3.27 105.5 100 mg/Kg 102 70-130 NA 0-50 LFM

 18235 CADMIUM ND 102.5 100 mg/Kg 103 70-130 NA 0-50 LFM

 18235 CHROMIUM 0.69 101 100 mg/Kg 100 70-130 NA 0-50 LFM

 18235 MANGANESE ND 112 100 mg/Kg 112 70-130 NA 0-50 LFM

 18235 NICKEL 71.5 185 100 mg/Kg 114 70-130 NA 0-50 LFM

 18235 LEAD 7.25 118 100 mg/Kg 111 70-130 NA 0-50 LFM

 18235 SELENIUM ND 102 100 mg/Kg 102 70-130 NA 0-50 LFM

 18235 ANTIMONY ND 114 100 mg/Kg 114 70-130 NA 0-50 LFM

 18235 COBALT 0.51 115 100 mg/Kg 114 70-130 NA 0-50 LFM

 18240 BERYLLIUM 0.64 100.8 100 mg/Kg 100 70-130 NA 0-50 LFM

 18240 ARSENIC 125 223 100 mg/Kg 98 70-130 NA 0-50 LFM

 18240 CADMIUM 2.1 102 100 mg/Kg 100 70-130 NA 0-50 LFM

 18240 CHROMIUM 9.8 106 100 mg/Kg 96 70-130 NA 0-50 LFM

 18240 MANGANESE 8.0 121 100 mg/Kg 113 70-130 NA 0-50 LFM

 18240 LEAD 59.5 162 100 mg/Kg 103 70-130 NA 0-50 LFM

 18240 SELENIUM ND 104 100 mg/Kg 104 70-130 NA 0-50 LFM

 18240 ANTIMONY 5.4 115 100 mg/Kg 110 70-130 NA 0-50 LFM

 18240 COBALT 8.3 121 100 mg/Kg 113 70-130 NA 0-50 LFM

 18314 BERYLLIUM 0.2 96.3 96 mg/Kg 100 70-130 NA 0-50 LFM

 18314 ARSENIC 14.2 113 96 mg/Kg 103 70-130 NA 0-50 LFM

 18314 CADMIUM 1.3 98 96 mg/Kg 101 70-130 NA 0-50 LFM

 18314 CHROMIUM 1.9 100 96 mg/Kg 102 70-130 NA 0-50 LFM

 18314 MANGANESE 0.5 115 96 mg/Kg 119 70-130 NA 0-50 LFM

 18314 NICKEL 172 284 96 mg/Kg 117 70-130 NA 0-50 LFM

 18314 LEAD 14 122 96 mg/Kg 113 70-130 NA 0-50 LFM

 18314 SELENIUM ND 102 96 mg/Kg 106 70-130 NA 0-50 LFM

 18314 ANTIMONY 2 114 96 mg/Kg 117 70-130 NA 0-50 LFM

 18314 COBALT 1.8 118 96 mg/Kg 121 70-130 NA 0-50 LFM

HEXCR-110617

 18237 HEXAVALENT CHROMIUM ND 0.0133 0.0125 ug/g 106 70-130 NA 0-50 LFM

 18318 HEXAVALENT CHROMIUM 0.0076 0.0217 0.0149 ug/g 95 70-130 NA 0-50 LFM

Matrix Spike (MS)/Matrix Spike Duplicate (MSD) analyses are used to determine the accuracy (MS) and precision (MSD) of a analytical method in a given sample matrix. Therefore, the usefulness of this report is limited to samples of 

similar matrices analyzed in the same analytical batch.

NA = Indicates %RPD could not be calculated

%RPD = Relative Percent Difference

Only Duplicate sample with detections are listed in this report