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Data Verification Report
for Packages 5017 and 5122

ITS Rework Data Verification Summary Report

for soil samples collected from

Camp Stanley Storage Activity

Boerne, Texas

Data Verification by: Michelle Wolfe and Katherine LaPierre

Parsons ES

INTRODUCTION

The following data verification summary report covers environmental soil samples and field quality control (QC) samples collected from the Camp Stanley Storage Activity (CSSA) under ITS rework on March 23 and 24, 2000. Samples in the following laboratory Sample Delivery Groups (SDGs) were analyzed for metals:

5017

5122

 

Field quality control samples collected were equipment blanks, matrix spike/matrix spike duplicates (MS/MSD), and field duplicates.  No ambient blanks were collected for this project.  During the initiation of this project, it was determined that ambient blanks were not necessary due to the absence of a source at the site.  All field quality control samples were analyzed for the same parameters as their associated samples.

All samples were collected by Parsons Engineering Science (Parsons ES) and analyzed by O'Brien & Gere Laboratories, Inc. (OBG) following the procedures outlined in the AFCEE QAPP, version 3.0.

EVALUATION CRITERIA

The data submitted by the laboratory has been reviewed and verified following the guidelines outlined in the AFCEE QAPP, version 3.0.  Information reviewed in the data packages include sample results; the summary of laboratory quality control results; case narratives; raw data; and chain-of-custody (COC) forms.  The analyses and findings presented in this report are based on the reviewed information and whether the guidelines in the AFCEE QAPP were met. 

ICP METALS

General

These SDGs consisted of thirty-four (34) samples, including twenty-four (24) environmental soil samples, four field duplicates, two sets of MS/MSD samples and two equipment blanks.  The samples were collected on March 23 and 24, 2000 and were analyzed for a reduced list of ICP metals, which included barium, chromium, copper, nickel and zinc.

The ICP metals analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 6010B. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

It should be noted that many of the soil samples in these SDGs were analyzed at a 5X dilution due to the high concentration of calcium present.

Accuracy

Accuracy was evaluated using the percent recovery (%R) obtained from the MS/MSD and LCS samples.  Samples RW-B25-SS03(0-0.5) and RW-B8-SB02(0.5-1) were analyzed as MS/MSD samples for these SDGs.

All MS/MSD %Rs were within acceptance criteria except for the following:

Parent Sample ID

Analyte MS %R MSD %R QC Criteria
RW-B25-SS03 (0-0.5) Zinc 68 64 75-125%
RW-B8-SB02 (0.5-1) Barium
Copper
Zinc
-108
754
-79.3
-134
-297
-141
75-125%

The barium, copper and zinc results for the samples from site B25 and B8, collected at a similar depth as the MS/MSDs, were flagged �M� to indicate a matrix effect (low bias) was present.

All LCS %Rs were within acceptance criteria.

Precision

Precision was evaluated using the Relative Percent Difference (RPD) obtained from the MS/MSD concentrations and the field duplicate analyte values. The following samples were collected and analyzed as field duplicates:

Parent Sample ID Field Duplicate ID
RW-B25-SS03 (0-0.5) RW-B25-SS03 (0-0.5) FD

RW-B26-SB02 (0.5-1)

RW-B26-SB02 (0.5-1) FD
RW-B8-SB02 (0.5-1) RW-B8-SB02 (0.5-1) FD
RW-B8-SB03 (8-8.5) RW-B8-SB03 (8-8.5) FD

All MS/MSD RPDs were within acceptance criteria except for the following:

Parent Sample ID

Analyte RPD QC Criteria
RW-B8-SB02 (0.5-1) Copper
Zinc
131
51
Less than or equal to 20%

The copper and zinc results in the associated samples were previously flagged �M� due to the failing MS/MSD recoveries, so no additional corrective action was necessary.

All field duplicate RPDs were within acceptance criteria except for the following:

Parent Sample / Duplicate

Collected Analyte RPD QC Criteria
RW-B25-SS03 (0-0.5) / FD 3/23/00 Barium 23.2 Less than or equal to 20%
RW-B8-SB02 (0.5-1) / FD 3/23/00 Barium
Copper
Nickel
Zinc
35.6
131
162
126
Less than or equal to 20%
RW-B8-SB03 (8-8.5) / FD 3/24/00 Barium 60.5 Less than or equal to 20%

The barium, copper, nickel and zinc results for all samples collected on the same sampling date as the non-compliant field duplicate pairs were considered estimated and flagged �J� if detected above the RL.  The �J� flag was not applied if the result was below the RL (flagged �F�) or if the result was previously flagged �M� due to the failing MS/MSD since both the �F� flag and the �M� flag supercede the �J� flag in the AFCEE QAPP flag hierarchy.

Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represents actual site conditions.  Representativeness has been evaluated by:

All samples in these SDGs were analyzed following the COC and the analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding time required by the method.   

Parent Sample ID

Collected Analyte RPD QC Criteria
RW-B8-SB02 (0.5-1) / FD 3/23/00 Nickel 11.7 Less than or equal to 10%

All associated nickel results were previously flagged �J� due to the failing field duplicate RPD, so no additional corrective action was necessary.

 There were three method blanks, two equipment blanks and numerous calibration blanks associated with the ICP metals analyses in these SDGs.  All blanks were free of any metals above the RL.

Completeness

Completeness has been evaluated by comparing the total number of samples collected with the total number of samples with valid analytical data. 

All ICP metals results for the samples in these SDGs were considered usable.  The completeness for the ICP metals portion of these SDGs is 100%, which meets the minimum acceptance criteria of 90%.

ARSENIC

General

These SDGs consisted of thirty-four (34) samples, including twenty-four (24) environmental soil samples, four field duplicates, two sets of MS/MSD samples and two equipment blanks.  The samples were collected on March 23 and 24, 2000 and were analyzed for arsenic.

The arsenic analyses were performed using USEPA SW846 Method 7060A. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

It should be noted that several samples in these SDGs were analyzed at a dilution based on the ICP screening results.  This is an approved variance for the OBG laboratory.

Accuracy

Accuracy was evaluated using the %R obtained from the MS/MSD and LCS samples. Samples RW-B25-SS03(0-0.5) and RW-B8-SB02(0.5-1) were analyzed as MS/MSD samples for these SDGs.

All MS/MSD %Rs were within acceptance criteria except for the following:

Parent Sample ID

Analyte MS %R MSD %R QC Criteria
RW-B8-SB02 (0.5-1) Arsenic 122 187 74-120%

The arsenic results for the samples from site B8 collected at a similar depth as the MS/MSD were flagged �M� to indicate a matrix effect (high bias) was present.

All LCS %Rs were within acceptance criteria.

Precision

Precision was evaluated using the RPD obtained from the MS/MSD concentrations and the field duplicate analyte values. The following samples were collected and analyzed as field duplicates:

Parent Sample ID Field Duplicate ID
RW-B25-SS03 (0-0.5) RW-B25-SS03 (0-0.5) FD

RW-B26-SB02 (0.5-1)

RW-B26-SB02 (0.5-1) FD
RW-B8-SB02 (0.5-1) RW-B8-SB02 (0.5-1) FD
RW-B8-SB03 (8-8.5) RW-B8-SB03 (8-8.5) FD

All MS/MSD RPDs were within acceptance criteria.

All filed duplicate RPDs were within acceptance criteria except for the following:

Parent Sample ID

Collected Analyte RPD QC Criteria
RW-B25-SS03 (0-0.5) / FD 3/23/00 Arsenic 20.3 Less than or equal to 15%
RW-B8-SB02 (0.5-1) / FD 3/23/00 Arsenic 22.3 Less than or equal to 15%
RW-B8-SB03 (8-8.5) / FD 3/24/00 Arsenic 40.0 Less than or equal to 15%

The arsenic results for all samples collected on the same date as the non-compliant field duplicate pairs were considered estimated and flagged �J� if detected above the RL.  The �J� flag was not applied if the result was below the RL (flagged �F�) or if the result was previously flagged �M� due to the failing MS/MSD since both the �F� flag and the �M� flag supercede the �J� flag in the AFCEE QAPP flag hierarchy.

Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represents actual site conditions.  Representativeness has been evaluated by:

All samples in these SDGs were analyzed following the COC and the analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding time required by the method.

There were three method blanks, two equipment blanks and numerous calibration blanks associated with the arsenic analyses in these SDGs.  All blanks were free of any arsenic above the RL.

Completeness

Completeness has been evaluated by comparing the total number of samples collected with the total number of samples with valid analytical data. 

All arsenic results for the samples in these SDGs were considered usable.  The completeness for the arsenic portion of these SDGs is 100%, which meets the minimum acceptance criteria of 90%.

CADMIUM

General

These SDGs consisted of thirty-four (34) samples, including twenty-four (24) environmental soil samples, four field duplicates, two sets of MS/MSD samples and two equipment blanks.  The samples were collected on March 23 and 24, 2000 and were analyzed for cadmium.

The cadmium analyses were performed using USEPA SW846 Method 7131A. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

It should be noted that several samples in these SDGs were analyzed at a dilution based on the ICP screening results.  This is an approved variance for the OBG laboratory.

Accuracy

Accuracy was evaluated using the %R obtained from the MS/MSD and LCS samples. Samples RW-B25-SS03(0-0.5) and RW-B8-SB02(0.5-1) were analyzed as MS/MSD samples for these SDGs.

All MS/MSD %Rs were within acceptance criteria except for the following:

Parent Sample ID

Analyte MS %R MSD %R QC Criteria
RW-B8-SB02 (0.5-1) Cadmium (100) 38 80-122%

( ) indicates the %R met QC criteria.

The cadmium results for the samples from site B8 collected at a similar depth as the MS/MSD were flagged �M� to indicate a matrix effect (high bias) was present.

All LCS %Rs were within acceptance criteria.

Precision

Precision was evaluated using the RPD obtained from the MS/MSD concentrations and the field duplicate analyte values. The following samples were collected and analyzed as field duplicates:

Parent Sample ID Field Duplicate ID
RW-B25-SS03 (0-0.5) RW-B25-SS03 (0-0.5) FD

RW-B26-SB02 (0.5-1)

RW-B26-SB02 (0.5-1) FD
RW-B8-SB02 (0.5-1) RW-B8-SB02 (0.5-1) FD
RW-B8-SB03 (8-8.5) RW-B8-SB03 (8-8.5) FD

All MS/MSD RPDs were within acceptance criteria.

All field duplicate RPDs were within acceptance criteria except for the following:

Parent Sample ID

Collected Analyte RPD QC Criteria
RW-B26-SB02 (0.5-1) / FD 3/23/00 Cadmium 136 Less than or equal to 15%
RW-B8-SB02 (0.5-1) / FD 3/23/00 Cadmium 43.9 Less than or equal to 15%

The cadmium results for all samples collected on the same date as the non-compliant field duplicate pairs were considered estimated and flagged �J� if detected above the RL.  The �J� flag was not applied if the result was below the RL (flagged �F�) or if the result was previously flagged �M� due to the failing MS/MSD since both the �F� flag and the �M� flag supercede the �J� flag in the AFCEE QAPP flag hierarchy.  The results were flagged �R� in the associated samples if non-detect.

Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represents actual site conditions.  Representativeness has been evaluated by:

All samples in these SDGs were analyzed following the COC and the analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding time required by the method.

There were three method blanks, two equipment blanks and numerous calibration blanks associated with the cadmium analyses in these SDGs.  All blanks were free of any cadmium above the RL.

Completeness

Completeness has been evaluated by comparing the total number of samples collected with the total number of samples with valid analytical data. 

Four of the thirty cadmium results for the samples in these SDGs were considered unusable.  The completeness for the cadmium portion of these SDGs is 86.7%, which does not meet the minimum acceptance criteria of 90%. 

LEAD

General

These SDGs consisted of thirty-four (34) samples, including twenty-four (24) environmental soil samples, four field duplicate soil samples, two sets of matrix spike/matrix spike duplicate samples and two equipment blank samples.  The samples were collected on March 23 and 24, 2000 and analyzed for lead.

The lead analyses were performed using USEPA SW846 Method 7421. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

It should be noted that several samples in these SDGs were analyzed at a dilution based on the ICP screening results.  This is an approved variance for the OBG laboratory.

Accuracy

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Samples RW-B25-SS03 (0-0.5�) and RW-B8-SB02 (0.5-1�) were used as the MS/MSD samples for these SDGs.

The MS/MSD %Rs were within acceptance criteria except for the following:

Parent Sample ID

Analyte MS %R MSD %R QC Criteria
RW-B8-SB02 (0.5-1) Lead -23800 25460 74-124%

The lead results for the samples from site B8 collected at a similar depth as the MS/MSD were flagged �M� to indicate a matrix effect (high bias) was present.

All LCS %Rs were within acceptance criteria.

Precision

Precision was evaluated using the RPD obtained from the MS/MSD concentrations and the field duplicate analyte values. The following samples were collected and analyzed as field duplicates:

Parent Sample ID Field Duplicate ID
RW-B25-SS03 (0-0.5) RW-B25-SS03 (0-0.5) FD
RW-B26-SB02 (0.5-1) RW-B26-SB02 (0.5-1) FD
RW-B8-SB02 (0.5-1) RW-B8-SB02 (0.5-1) FD
RW-B8-SB03 (8-8.5) RW-B8-SB03 (8-8.5) FD

All MS/MSD RPDs were within acceptance criteria except for the following:

Parent Sample ID

Analyte RPD QC Criteria
RW-B8-SB02 (0.5-1) Lead 68 Less than or equal to 25%

The lead results in the associated samples were previously flagged �M� due to the failing MS/MSD recoveries, so no additional corrective action was necessary.

All field duplicate RPDs were within acceptance criteria.

Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represents actual site conditions.  Representativeness has been evaluated by:

All samples in these SDGs were analyzed following the COC and the analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding time required by the method.

There were three method blanks, two equipment blanks and numerous calibration blanks associated with the lead analyses in these SDGs.  All blanks were free of any lead above the RL.

Completeness

Completeness has been evaluated by comparing the total number of samples collected with the total number of samples with valid analytical data. 

All lead results for the samples in these SDGs were considered usable.  The completeness for the lead portion of these SDGs is 100%, which meets the minimum acceptance criteria of 90%.

MERCURY

General

These SDGs consisted of thirty-four (34) samples, including twenty-four (24) environmental soil samples, four field duplicates, two sets of MS/MSD samples and two equipment blanks.  The samples were collected on March 23 and 24, 2000 and were analyzed for mercury.

The mercury analyses were performed using USEPA SW846 Method 7471A for soils and 7470A for waters. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

Accuracy

Accuracy was evaluated using the %R obtained from the MS/MSD and LCS samples. Samples RW-B25-SS03(0-0.5) and RW-B8-SB02(0.5-1) were analyzed as MS/MSD samples for these SDGs.

All MS/MSD %Rs were within acceptance criteria except for the following:

Parent Sample ID

Analyte MS %R MSD %R QC Criteria
RW-B8-SB02 (0.5-1) Mercury 74 124 77-120%

The mercury results for the samples from site B8 collected at a similar depth as the MS/MSD were flagged �M� to indicate a matrix effect was present.

All LCS %Rs were within acceptance criteria.

Precision

Precision was evaluated using the RPD obtained from the MS/MSD concentrations and the field duplicate analyte values. The following samples were collected and analyzed as field duplicates:

Parent Sample ID Field Duplicate ID
RW-B25-SS03 (0-0.5) RW-B25-SS03 (0-0.5) FD
RW-B26-SB02 (0.5-1) RW-B26-SB02 (0.5-1) FD
RW-B8-SB02 (0.5-1) RW-B8-SB02 (0.5-1) FD
RW-B8-SB03 (8-8.5) RW-B8-SB03 (8-8.5) FD

All MS/MSD RPDs were within acceptance criteria except for the following:

Parent Sample ID

Analyte RPD QC Criteria
RW-B8-SB02 (0.5-1) Mercury 51 Less than or equal to 25%

The mercury results in the associated samples were previously flagged �M� due to the failing MS/MSD recoveries, so no additional corrective action was necessary.

All field duplicate RPDs were within acceptance criteria.

Representativeness

Representativeness expresses the degree to which sample data accurately and precisely represents actual site conditions.  Representativeness has been evaluated by:

All samples in these SDGs were analyzed following the COC and the analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding time required by the method.

There were three method blanks, two equipment blanks and numerous calibration blanks associated with the mercury analyses in these SDGs.  All blanks were free of any mercury above the RL.

Completeness

Completeness has been evaluated by comparing the total number of samples collected with the total number of samples with valid analytical data. 

All mercury results for the samples in these SDGs were considered usable.  The completeness for the mercury portion of these SDGs is 100%, which meets the minimum acceptance criteria of 90%.