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 11-08082

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110609 ANTIMONY 1.08 1.00 mg/L 6020A 108 70-130 LFB

ARSENIC 0.98 1.00 mg/L 6020A 98 70-130

BERYLLIUM 1.03 1.00 mg/L 6020A 103 85-115

CADMIUM 0.95 1.00 mg/L 6020A 95 70-130

CHROMIUM 1.03 1.00 mg/L 6020A 103 70-130

COBALT 0.99 1.00 mg/L 6020A 99 85-115

LEAD 0.98 1.00 mg/L 6020A 98 70-130

MANGANESE 1.01 1.00 mg/L 6020A 101 70-130

NICKEL 1.00 1.00 mg/L 6020A 100 70-130

SELENIUM 0.98 1.00 mg/L 6020A 98 70-130

6020_110620 ANTIMONY 0.051 0.050 mg/L 6020A 102 70-130 LFB

ARSENIC 0.051 0.050 mg/L 6020A 102 70-130

BERYLLIUM 0.056 0.050 mg/L 6020A 112 70-130

CADMIUM 0.051 0.050 mg/L 6020A 102 70-130

CHROMIUM 0.051 0.050 mg/L 6020A 102 70-130

COBALT 0.050 0.050 mg/L 6020A 100 70-130

LEAD 0.050 0.050 mg/L 6020A 100 70-130

MANGANESE 0.052 0.050 mg/L 6020A 104 70-130

NICKEL 0.052 0.050 mg/L 6020A 104 70-130

SELENIUM 0.051 0.050 mg/L 6020A 102 70-130

HEXCRS-110610 HEXAVALENT CHROMIUM 48.6 50 ug/L 218.6 97 85-115 LFB

% 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 11-08082

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110609 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

6020_110620 ANTIMONY ND mg/L 6020A 0.00050 LRB

ARSENIC ND mg/L 6020A 0.00050

BERYLLIUM ND mg/L 6020A 0.00250

CADMIUM ND mg/L 6020A 0.00050

CHROMIUM ND mg/L 6020A 0.00250

COBALT ND mg/L 6020A 0.00050

LEAD ND mg/L 6020A 0.00050

MANGANESE ND mg/L 6020A 0.00250

NICKEL ND mg/L 6020A 0.00050

SELENIUM ND mg/L 6020A 0.00250

HEXCRS-110610 HEXAVALENT CHROMIUM ND ug/L 218.6 0.00000 LRB Filter Blank

% 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 11-08082

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110609 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

6020_110620 ANTIMONY ND mg/L 6020A 0.00050 MB

ARSENIC ND mg/L 6020A 0.00050

BERYLLIUM ND mg/L 6020A 0.00050

CADMIUM ND mg/L 6020A 0.00050

CHROMIUM ND mg/L 6020A 0.00250

COBALT ND mg/L 6020A 0.00050

LEAD ND mg/L 6020A 0.00050

MANGANESE ND mg/L 6020A 0.00250

NICKEL ND mg/L 6020A 0.00050

SELENIUM ND mg/L 6020A 0.00250

HEXCRS-110610 HEXAVALENT CHROMIUM ND ug/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 11-08082

Batch Analyte Result Value Units Method Recovery Limits Comment

True %

Type*

QC

Qualifier

6020_110609 ANTIMONY 0.041 0.040 mg/L 6020A 103 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 0.039 0.040 mg/L 6020A 98 70-130

COBALT 0.038 0.040 mg/L 6020A 95 85-115

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

MANGANESE 0.038 0.040 mg/L 6020A 95 70-130

NICKEL 0.038 0.040 mg/L 6020A 95 70-130

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

6020_110620 ANTIMONY 0.036 0.040 mg/L 6020A 90 70-130 QCS

ARSENIC 0.038 0.040 mg/L 6020A 95 70-130

BERYLLIUM 0.038 0.040 mg/L 6020A 95 70-130

CADMIUM 0.038 0.040 mg/L 6020A 95 70-130

CHROMIUM 0.037 0.040 mg/L 6020A 93 70-130

COBALT 0.036 0.040 mg/L 6020A 90 70-130

LEAD 0.037 0.040 mg/L 6020A 93 70-130

MANGANESE 0.038 0.040 mg/L 6020A 95 70-130

NICKEL 0.038 0.040 mg/L 6020A 95 70-130

SELENIUM 0.038 0.040 mg/L 6020A 95 70-130

HEXCRS-110610 HEXAVALENT CHROMIUM 690 668 ug/L 218.6 103 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.