### 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 Alcoa Warrick Operations Client Name:

## P O Box 10 Newburgh, IN 47629 11-08428 Reference Number: 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 C Allen 

### Collected By: Analyzed 

## Parameter Result PQL Units Comment Method AnalystBatch 

### CAS ID# DF MDL MRL BERYLLIUM mg/Kg 0.08 

### 0.2 6020A/3051 6/14/11 MVP 6020_110614 7440-41-7 1.00 0.08 ARSENIC mg/Kg 1.0 

### 14.2 6020A/3051 6/14/11 MVP 6020_110614 7440-38-2 1.00 1.0 CADMIUM mg/Kg 0.5 

### 1.3 6020A/3051 6/14/11 MVP 6020_110614 7440-43-9 1.00 0.5 CHROMIUM mg/Kg 0.6 

### 1.9 6020A/3051 6/14/11 MVP 6020_110614 7440-47-3 1.00 0.6 LEAD mg/Kg 0.24 

### 14 6020A/3051 6/14/11 MVP 6020_110614 7439-92-1 1.00 0.24 MANGANESE mg/Kg 0.5 

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

### 172 6020A/3051 6/14/11 MVP 6020_110614 7440-02-0 1.00 0.5 SELENIUM mg/Kg 2 

### ND 6020A/3051 6/14/11 MVP 6020_110614 7782-49-2 1.00 2 ANTIMONY mg/Kg 0.4 

### 2 6020A/3051 6/14/11 MVP 6020_110614 7440-36-0 1.00 0.4 COBALT mg/Kg 0.2 

### 1.8 6020A/3051 6/14/11 MVP 6020_110614 7440-48-4 1.00 0.2 HEXAVALENT CHROMIUM ug/g 0.0025 

### 0.0051 218.6 6/17/11 LJH HEXCR-110617 18540-29-9 5.00 0.0025 

### Sample Description: Lab Number:18315 May 10 Sample Date:5/10/11 C Allen 

### Collected By: Analyzed 

## Parameter Result PQL Units Comment Method AnalystBatch 

### CAS ID# DF MDL MRL BERYLLIUM mg/Kg 0.08 

### 0.2 6020A/3051 6/14/11 MVP 6020_110614 7440-41-7 1.00 0.08 ARSENIC mg/Kg 1.0 

### 10.6 6020A/3051 6/14/11 MVP 6020_110614 7440-38-2 1.00 1.0 CADMIUM mg/Kg 0.5 

### 1.4 6020A/3051 6/14/11 MVP 6020_110614 7440-43-9 1.00 0.5 CHROMIUM mg/Kg 0.6 

### 1.8 6020A/3051 6/14/11 MVP 6020_110614 7440-47-3 1.00 0.6 LEAD mg/Kg 0.24 

### 15 6020A/3051 6/14/11 MVP 6020_110614 7439-92-1 1.00 0.24 MANGANESE mg/Kg 0.5 

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

### 149 6020A/3051 6/14/11 MVP 6020_110614 7440-02-0 1.00 0.5 SELENIUM mg/Kg 2 

### ND 6020A/3051 6/14/11 MVP 6020_110614 7782-49-2 1.00 2 ANTIMONY mg/Kg 0.4 

### 2.3 6020A/3051 6/14/11 MVP 6020_110614 7440-36-0 1.00 0.4 COBALT mg/Kg 0.2 

### 1.3 6020A/3051 6/14/11 MVP 6020_110614 7440-48-4 1.00 0.2 HEXAVALENT CHROMIUM ug/g 0.0025 

### 0.0070 218.6 6/17/11 LJH HEXCR-110617 18540-29-9 5.00 0.0025



## 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 C Allen 

### Collected By: Analyzed 

## Parameter Result PQL Units Comment Method AnalystBatch 

### CAS ID# DF MDL MRL BERYLLIUM mg/Kg 0.08 

### 0.2 6020A/3051 6/14/11 MVP 6020_110614 7440-41-7 1.00 0.08 ARSENIC mg/Kg 1.0 

### 10.4 6020A/3051 6/14/11 MVP 6020_110614 7440-38-2 1.00 1.0 CADMIUM mg/Kg 0.5 

### 1.3 6020A/3051 6/14/11 MVP 6020_110614 7440-43-9 1.00 0.5 CHROMIUM mg/Kg 0.6 

### 2.0 6020A/3051 6/14/11 MVP 6020_110614 7440-47-3 1.00 0.6 LEAD mg/Kg 0.24 

### 13.5 6020A/3051 6/14/11 MVP 6020_110614 7439-92-1 1.00 0.24 MANGANESE mg/Kg 0.5 

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

### 155 6020A/3051 6/14/11 MVP 6020_110614 7440-02-0 1.00 0.5 SELENIUM mg/Kg 2 

### ND 6020A/3051 6/14/11 MVP 6020_110614 7782-49-2 1.00 2 ANTIMONY mg/Kg 0.4 

### 1.8 6020A/3051 6/14/11 MVP 6020_110614 7440-36-0 1.00 0.4 COBALT mg/Kg 0.2 

### 1.3 6020A/3051 6/14/11 MVP 6020_110614 7440-48-4 1.00 0.2 HEXAVALENT CHROMIUM ug/g 0.0025 

### 0.0079 218.6 6/17/11 LJH HEXCR-110617 18540-29-9 5.00 0.0025 

### Sample Description: Lab Number:18317 May 12 Sample Date:5/12/11 C Allen 

### Collected By: Analyzed 

## Parameter Result PQL Units Comment Method AnalystBatch 

### CAS ID# DF MDL MRL BERYLLIUM mg/Kg 0.08 

### 0.2 6020A/3051 6/14/11 MVP 6020_110614 7440-41-7 1.00 0.08 ARSENIC mg/Kg 1.0 

### 13.9 6020A/3051 6/14/11 MVP 6020_110614 7440-38-2 1.00 1.0 CADMIUM mg/Kg 0.5 

### 1.6 6020A/3051 6/14/11 MVP 6020_110614 7440-43-9 1.00 0.5 CHROMIUM mg/Kg 0.6 

### 1.6 6020A/3051 6/14/11 MVP 6020_110614 7440-47-3 1.00 0.6 LEAD mg/Kg 0.24 

### 15.3 6020A/3051 6/14/11 MVP 6020_110614 7439-92-1 1.00 0.24 MANGANESE mg/Kg 0.5 

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

### 124 6020A/3051 6/14/11 MVP 6020_110614 7440-02-0 1.00 0.5 SELENIUM mg/Kg 2 

### ND 6020A/3051 6/14/11 MVP 6020_110614 7782-49-2 1.00 2 ANTIMONY mg/Kg 0.4 

### 2.3 6020A/3051 6/14/11 MVP 6020_110614 7440-36-0 1.00 0.4 COBALT mg/Kg 0.2 

### 1.2 6020A/3051 6/14/11 MVP 6020_110614 7440-48-4 1.00 0.2 HEXAVALENT CHROMIUM ug/g 0.0025 

### 0.0046 218.6 6/17/11 LJH HEXCR-110617 18540-29-9 5.00 0.0025 

### Sample Description: Lab Number:18318 May 13 Sample Date:5/13/11 C Allen 

### Collected By: Analyzed 

## Parameter Result PQL Units Comment Method AnalystBatch 

### CAS ID# DF MDL MRL BERYLLIUM mg/Kg 0.08 

### 0.2 6020A/3051 6/14/11 MVP 6020_110614 7440-41-7 1.00 0.08 ARSENIC mg/Kg 1.0 

### 13.1 6020A/3051 6/14/11 MVP 6020_110614 7440-38-2 1.00 1.0 CADMIUM mg/Kg 0.5 

### 1.4 6020A/3051 6/14/11 MVP 6020_110614 7440-43-9 1.00 0.5 CHROMIUM mg/Kg 0.6 

### 2.1 6020A/3051 6/14/11 MVP 6020_110614 7440-47-3 1.00 0.6 LEAD mg/Kg 0.24 

### 14.7 6020A/3051 6/14/11 MVP 6020_110614 7439-92-1 1.00 0.24 MANGANESE mg/Kg 0.5 

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

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

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

SELENIUM mg/Kg 2 

### ND 6020A/3051 6/14/11 MVP 6020_110614 7782-49-2 1.00 2 ANTIMONY mg/Kg 0.4 

### 1.8 6020A/3051 6/14/11 MVP 6020_110614 7440-36-0 1.00 0.4 COBALT mg/Kg 0.2 

### 1.5 6020A/3051 6/14/11 MVP 6020_110614 7440-48-4 1.00 0.2 HEXAVALENT CHROMIUM ug/g 0.0025 

### 0.0076 218.6 6/17/11 LJH HEXCR-110617 18540-29-9 5.00 0.0025

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



## 06/22/11 Report Date: 

# QUALITY CONTROL REPORT Reference Number: 

# SAMPLE INDEPENDENT

11-08428 Laboratory Fortified Blank

Comment Recovery Method Units Value Result Analyte Batch Limits True % Type* QC Qualifier 

### 97 6020_110614 ANTIMONY 

### 0.971 1.00 mg/L 6020A LFB 70-130 

### 97 ARSENIC 

### 0.969 1.00 mg/L 6020A 70-130 

### 97 BERYLLIUM 

### 0.965 1.00 mg/L 6020A 85-115 

### 95 CADMIUM 

### 0.952 1.00 mg/L 6020A 70-130 

### 96 CHROMIUM 

### 0.963 1.00 mg/L 6020A 70-130 

### 96 COBALT 

### 0.960 1.00 mg/L 6020A 85-115 

### 96 LEAD 

### 0.956 1.00 mg/L 6020A 70-130 

### 99 MANGANESE 

### 0.985 1.00 mg/L 6020A 70-130 

### 95 NICKEL 

### 0.952 1.00 mg/L 6020A 70-130 

### 96 SELENIUM 

### 0.958 1.00 mg/L 6020A 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



## 06/22/11 Report Date: 

# QUALITY CONTROL REPORT Reference Number: 

# SAMPLE INDEPENDENT

11-08428 Laboratory Reagent Blank

Comment Recovery Method Units Value Result Analyte Batch Limits True % Type* QC Qualifier 6020_110614 ANTIMONY 

### ND mg/L 6020A LRB 0.00000 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-110617HEXAVALENT CHROMIUM 

### ND ng/L 218.6 LRB 0.00000

% 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



## 06/22/11 Report Date: 

# QUALITY CONTROL REPORT Reference Number: 

# SAMPLE INDEPENDENT

11-08428 Method Blank

Comment Recovery Method Units Value Result Analyte Batch Limits True % Type* QC Qualifier 6020_110614 ANTIMONY 

### ND mg/L 6020A MB 0.00000 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-110617HEXAVALENT CHROMIUM 

### ND ng/L 218.6 MB 0.00000

% 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



## 06/22/11 Report Date: 

# QUALITY CONTROL REPORT Reference Number: 

# SAMPLE INDEPENDENT

11-08428 Quality Control Sample

Comment Recovery Method Units Value Result Analyte Batch Limits True % Type* QC Qualifier 

### 98 6020_110614 ANTIMONY 

### 0.039 0.040 mg/L 6020A QCS 70-130 

### 100 ARSENIC 

### 0.040 0.040 mg/L 6020A 70-130 

### 98 BERYLLIUM 

### 0.039 0.040 mg/L 6020A 85-115 

### 98 CADMIUM 

### 0.039 0.040 mg/L 6020A 70-130 

### 100 CHROMIUM 

### 0.040 0.040 mg/L 6020A 70-130 

### 98 COBALT 

### 0.039 0.040 mg/L 6020A 85-115 

### 100 LEAD 

### 0.040 0.040 mg/L 6020A 70-130 

### 100 MANGANESE 

### 0.040 0.040 mg/L 6020A 70-130 

### 98 NICKEL 

### 0.039 0.040 mg/L 6020A 70-130 

### 98 SELENIUM 

### 0.039 0.040 mg/L 6020A 70-130



### 102 HEXCR-110617HEXAVALENT CHROMIUM 

### 682 668 ng/L 218.6 QCS 85-115

% 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 of2 

## 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



## 11-08428 

# QUALITY CONTROL REPORT Report Date: 

# Duplicate, Matrix Spike/Matrix Spike Duplicate and Confirmation Result Report 6/22/2011 Reference Number: 

# SAMPLE DEPENDENT



# Duplicate Duplicate QC Comments

Qualifier Limits %RPD Units Result Result Analyte Sample Batch Type 

### 6020_11061418235ARSENIC mg/Kg DUP 3.27 3.39 3.6 0-50 18235CHROMIUM mg/Kg DUP 0.69 0.69 0.0 0-50 18235NICKEL mg/Kg DUP 71.5 75.6 5.6 0-50 18235LEAD mg/Kg DUP 7.25 7.3 0.7 0-50 18235COBALT mg/Kg DUP 0.51 0.51 0.0 0-20 18240BERYLLIUM mg/Kg DUP 0.64 0.68 6.1 0-20 18240ARSENIC mg/Kg DUP 125 131 4.7 0-50 18240CADMIUM mg/Kg DUP 2.1 2.1 0.0 0-50 18240CHROMIUM mg/Kg DUP 9.8 10.2 4.0 0-50 18240MANGANESE mg/Kg DUP 8.0 8.4 4.9 0-50 18240LEAD mg/Kg DUP 59.5 62 4.1 0-50 18240ANTIMONY mg/Kg DUP 5.4 5.9 8.8 0-50 18240COBALT mg/Kg DUP 8.3 9.0 8.1 0-20 18314BERYLLIUM mg/Kg DUP 0.2 0.2 0.0 0-20 18314ARSENIC mg/Kg DUP 14.2 14.2 0.0 0-50 18314CADMIUM mg/Kg DUP 1.3 1.3 0.0 0-50 18314CHROMIUM mg/Kg DUP 1.9 1.9 0.0 0-50 18314MANGANESE mg/Kg DUP 0.5 0.5 0.0 0-50 18314NICKEL mg/Kg DUP 172 171 0.6 0-50 18314LEAD mg/Kg DUP 14 14 0.0 0-50 18314ANTIMONY mg/Kg DUP 2 1.9 5.1 0-50 18314COBALT mg/Kg DUP 1.8 1.8 0.0 0-20 

### HEXCR-110617 18318HEXAVALENT CHROMIUM ug/g DUP 0.0076 0.0086 12.3 0-20



### 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 of2 

### Reference Number:

## 11-08428 Report Date:

## 6/22/2011 

# Matrix Spike Duplicate QC Spike Spike Spike Percent Recovery Comments Qualifier Limits %RPD Batch SampleAnalyte Result Result Result Conc Units MS MSD Limits Type 

### 6020_110614 100 18235BERYLLIUM mg/Kg 100 70-130 LFM ND 99.7 NA 0-50 102 18235ARSENIC mg/Kg 100 70-130 LFM 3.27 105.5 NA 0-50 103 18235CADMIUM mg/Kg 100 70-130 LFM ND 102.5 NA 0-50 100 18235CHROMIUM mg/Kg 100 70-130 LFM 0.69 101 NA 0-50 112 18235MANGANESE mg/Kg 100 70-130 LFM ND 112 NA 0-50 114 18235NICKEL mg/Kg 100 70-130 LFM 71.5 185 NA 0-50 111 18235LEAD mg/Kg 100 70-130 LFM 7.25 118 NA 0-50 102 18235SELENIUM mg/Kg 100 70-130 LFM ND 102 NA 0-50 114 18235ANTIMONY mg/Kg 100 70-130 LFM ND 114 NA 0-50 114 18235COBALT mg/Kg 100 70-130 LFM 0.51 115 NA 0-50 100 18240BERYLLIUM mg/Kg 100 70-130 LFM 0.64 100.8 NA 0-50 98 18240ARSENIC mg/Kg 100 70-130 LFM 125 223 NA 0-50 100 18240CADMIUM mg/Kg 100 70-130 LFM 2.1 102 NA 0-50 96 18240CHROMIUM mg/Kg 100 70-130 LFM 9.8 106 NA 0-50 113 18240MANGANESE mg/Kg 100 70-130 LFM 8.0 121 NA 0-50 103 18240LEAD mg/Kg 100 70-130 LFM 59.5 162 NA 0-50 104 18240SELENIUM mg/Kg 100 70-130 LFM ND 104 NA 0-50 110 18240ANTIMONY mg/Kg 100 70-130 LFM 5.4 115 NA 0-50 113 18240COBALT mg/Kg 100 70-130 LFM 8.3 121 NA 0-50 100 18314BERYLLIUM mg/Kg 96 70-130 LFM 0.2 96.3 NA 0-50 103 18314ARSENIC mg/Kg 96 70-130 LFM 14.2 113 NA 0-50 101 18314CADMIUM mg/Kg 96 70-130 LFM 1.3 98 NA 0-50 102 18314CHROMIUM mg/Kg 96 70-130 LFM 1.9 100 NA 0-50 119 18314MANGANESE mg/Kg 96 70-130 LFM 0.5 115 NA 0-50 117 18314NICKEL mg/Kg 96 70-130 LFM 172 284 NA 0-50 113 18314LEAD mg/Kg 96 70-130 LFM 14 122 NA 0-50 106 18314SELENIUM mg/Kg 96 70-130 LFM ND 102 NA 0-50 117 18314ANTIMONY mg/Kg 96 70-130 LFM 2 114 NA 0-50 121 18314COBALT mg/Kg 96 70-130 LFM 1.8 118 NA 0-50 

### HEXCR-110617 106 18237HEXAVALENT CHROMIUM ug/g 0.0125 70-130 LFM ND 0.0133 NA 0-50 95 18318HEXAVALENT CHROMIUM ug/g 0.0149 70-130 LFM 0.0076 0.0217 NA 0-50



### 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