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AETC 5068 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 and aqueous samples and associated field quality control (QC) samples collected from the Camp Stanley Storage Activity (CSSA) under AETC DO5068 during the period from March 16 through March 26, 2001.  Samples in the following laboratory Sample Delivery Groups (SDGs) were analyzed for volatile organic compounds (VOCs) and metals:

8405

8440

8468

8512

    Field quality control samples collected were trip blanks, 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 QC samples were analyzed for volatiles.

    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.

VOLATILES

General

    These SDGs consisted of forty-one (41) samples, including twenty-seven (27) environmental soil samples, three field duplicates, three sets of MS/MSDs, two equipment blanks and three trip blanks.  The samples were collected on March 16, 19 and 21, 2001 and were analyzed for a reduced list of VOCs, which included 1,1-dichloroethene, carbon tetrachloride, chloroform, cis-1,2-dichloroethene, tetrachloroethene, trans-1,2-dichloroethene, and trichloroethene. 

    The VOC analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 8260B. Except as indicated in this report, all samples were analyzed following the procedures outlined in the AFCEE QAPP.

    It should be noted that the samples collected on 3/24/2001 for volatile analysis were not used due to insufficient sample volume.  All samples were recollected on 4/05/2001 and were analyzed in SDG 8615 (AETC DO5068-#14) for volatiles only.

Accuracy

    Accuracy was evaluated using the percent recovery (%R) obtained from the MS/MSD and LCS samples and the surrogate spikes.  Samples AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0) and AOC42-SB05 (15.0-16.0) were analyzed as MS/MSD samples for this data package.

    All MS/MSD, LCS and surrogate %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

AOC42-SS04 (0.5-1.0)

AOC42-SS04 (0.5-1.0) FD

AOC42-SB02 (7.0-8.0)

AOC42-SB02 (7.0-8.0) FD

AOC42-SB05 (15.0-16.0)

AOC42-SB05 (15.0-16.0) FD

All MS/MSD and 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:

·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection or analysis.

    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.

·        All instrument performance check criteria were met.

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source verification criteria were met.

·        All internal standard criteria were met.

    There were four method blanks, two equipment blanks and three trip blanks associated with the VOC analyses in this data package.  All blanks were free of VOCs 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 VOC results for the samples in these SDGs were considered usable.  The completeness for the VOC portion of these SDGs is 100%, which meets the minimum acceptance criteria of 90%.

ICP METALS

General

    These SDGs consisted of forty-five (45) samples, including thirty (30) environmental soil samples, four field duplicates, four sets of MS/MSDs and three equipment blanks.  The samples were collected on March 16, 19, 21 and 26, 2001 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 USEPA SW846 Method 6010B. 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 AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0), AOC42-SB05 (15.0-16.0) and AOC43-SS03 (0.5-1.0) were analyzed as MS/MSD samples for this data package.

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

 

Sample ID

Analyte

MS %R

MSD %R

QC Criteria

AOC42-SB02 (7.0-8.0)

Chromium

Nickel

74

72

(75)

73

75-125%

AOC42-SB05 (15.0-16.0)

Barium

Chromium

Nickel

72

73

74

69

69

70

75-125%

AOC43-SS03 (0.5-1.0)

Barium

Nickel

73

74

(75)

(75)

75-125%

( ) indicates the recovery met QC criteria.

    The barium, chromium and nickel results for the samples from the same site and collected at a similar depth as the non-compliant MS/MSDs 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

AOC42-SS04 (0.5-1.0)

AOC42-SS04 (0.5-1.0) FD

AOC42-SB02 (7.0-8.0)

AOC42-SB02 (7.0-8.0) FD

AOC42-SB05 (15.0-16.0)

AOC42-SB05 (15.0-16.0) FD

AOC43-SS03 (0.5-1.0)

AOC43-SS03 (0.5-1.0) FD

    All MS/MSD RPDs were within acceptance criteria.

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

Parent Sample ID / FD

Analyte

RPD

QC Criteria

AOC42-SB02 (7.0-8.0) / FD

Barium

Zinc

55.4

86.2

£ 20%

AOC42-SB05 (15.0-16.0) / FD

Barium

Nickel

89.2

43.7

£ 20%

AOC43-SS03 (0.5-1.0) / FD

Barium

20.6

£ 20%

    The barium, nickel and zinc 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:

·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection and analysis.

    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. 

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source verification criteria were met.

·        All serial dilution criteria were met.

·        All post digestion spike criteria were met.

    There were four method blanks, three equipment blanks and calibration blanks associated with the metal 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 forty-five (45) samples, including thirty (30) environmental soil samples, four field duplicates, four sets of MS/MSDs and three equipment blanks.  The samples were collected on March 16, 19, 21 and 26, 2001 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.

Accuracy

    Accuracy was evaluated using the %R obtained from the MS/MSD and LCS samples.  Samples AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0), AOC42-SB05 (15.0-16.0) and AOC43-SS03 (0.5-1.0) were analyzed as MS/MSDs for these SDGs.

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

Sample ID

Analyte

MS %R

MSD %R

QC Criteria

AOC42-SB02 (7.0-8.0)

Arsenic

60

(77)

74-120%

AOC42-SB05 (15.0-16.0)

Arsenic

26

(91)

74-120%

( ) indicates the recovery met QC criteria.

    The arsenic results for the samples from the same site and collected at a similar depth as MS/MSD were flagged “M” to indicate a matrix effect was present.

    The 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

AOC42-SS04 (0.5-1)

AOC42-SS04 (0.5-1) FD

AOC42-SB02 (7-8)

AOC42-SB02 (7-8) FD

AOC42-SB05 (15-16)

AOC42-SB05 (15-16) FD

AOC43-SS03 (0.5-1)

AOC43-SS03 (0.5-1) FD

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

Sample ID

Analyte

RPD

QC Criteria

AOC42-SB05 (15.0-16.0)

Arsenic

36

£15%

    The arsenic results for all associated samples were previously flagged “M” due to the failing MS recovery.  Therefore, no additional corrective action was necessary.

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

Parent Sample ID / FD

Analyte

RPD

QC Criteria

AOC42-SB02 (7.0-8.0) / FD

Arsenic

30.8

£15%

AOC42-SB05 (15.0-16.0) / FD

Arsenic

43.0

£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:

·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection and analysis.

    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. 

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source verification criteria were met.

·        All dilution test criteria were met.

·        All post digestion spike criteria were met.

    There were three method blanks, three 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 forty-five (45) samples, including thirty (30) environmental soil samples, four field duplicates, four sets of MS/MSDs and three equipment blanks.  The samples were collected on March 16, 19, 21 and 26, 2001 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.

Accuracy

    Accuracy was evaluated using the %R obtained from the MS/MSD and LCS samples.  Samples AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0), AOC42-SB05 (15.0-16.0) and AOC43-SS03 (0.5-1.0) were analyzed as MS/MSDs for these SDGs.

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

Sample ID

Analyte

MS %R

MSD %R

QC Criteria

AOC42-SS04 (0.5-1.0)

Cadmium

78

62

80-122%

AOC42-SB02 (7.0-8.0)

Cadmium

68

(92)

80-122%

AOC42-SB05 (15.0-16.0)

Cadmium

74

(85)

80-122%

 ( ) indicates the recovery met QC criteria.

    The cadmium results for the samples from the same site and collected at a similar depth as the MS/MSDs 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

AOC42-SS04 (0.5-1.0)

AOC42-SS04 (0.5-1.0) FD

AOC42-SB02 (7.0-8.0)

AOC42-SB02 (7.0-8.0) FD

AOC42-SB05 (15.0-16.0)

AOC42-SB05 (15.0-16.0) FD

AOC43-SS03 (0.5-1.0)

AOC43-SS03 (0.5-1.0) FD

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

Sample ID

Analyte

RPD

QC Criteria

AOC42-SB02 (7.0-8.0)

Cadmium

28

£15%

    The cadmium results for all associated samples were previously flagged “M” due to the failing MS recovery.  Therefore, no additional corrective action was necessary.

 

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

Sample ID / FD

Analyte

RPD

QC Criteria

AOC43-SS03 (0.5-1.0) / FD

Cadmium

16.6

£15%

The cadmium results for all samples collected on the same date as the non-compliant field duplicate pair 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”) since the “F” flag supercedes 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:

·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection and analysis.

    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. 

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source verification criteria were met.

·        All serial dilution criteria were met.

·        All post digestion spike criteria were met.

    There were three method blanks, three equipment blanks and numerous calibration blanks associated with the lead 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. 

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

LEAD

General

    These SDGs consisted of forty-five (45) samples, including thirty (30) environmental soil samples, four field duplicates, four sets of MS/MSDs, and three equipment blanks.  The samples were collected on March 16, 19, 21 and 26, 2001 and were 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 obtained from the MS/MSD and LCS samples.  Samples AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0), AOC42-SB05 (15.0-16.0) and AOC43-SS03 (0.5-1.0) were analyzed as MS/MSDs for these SDGs.

    Several MS/MSD %Rs were outside acceptance criteria as follows:

Sample ID

Analyte

MS %R

MSD %R

QC Criteria

AOC42-SS04 (0.5-1.0)

Lead

239

222

74-124%

AOC42-SB02 (7.0-8.0)

Lead

37

59

74-124%

AOC42-SB05 (15.0-16.0)

Lead

56

(78)

74-124%

AOC43-SS03 (0.5-1.0)

Lead

71

(101)

74-124%

( ) indicates the recovery met QC criteria.

    The lead results for the samples from the same site and collected at a similar depth as the MS/MSDs 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

AOC42-SS04 (0.5-1)

AOC42-SS04 (0.5-1) FD

AOC42-SB02 (7-8)

AOC42-SB02 (7-8) FD

AOC42-SB05 (15-16)

AOC42-SB05 (15-16) FD

AOC43-SS03 (0.5-1)

AOC43-SS03 (0.5-1) FD

All MS/MSD and 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:

·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection and analysis.

    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. 

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source verification criteria were met.

·        All dilution test criteria were met except for the following:

Date

Sample ID

%D

QC Criteria

4/9/01

AOC42-SB04 (14.0-14.5)

15.3%

£10%

4/10/01

AOC42-SB01 (14.5-15.0)

15.5%

£10%

    The lead results for all samples analyzed in the same batch as the non-compliant dilution tests were considered estimated and flagged “J” if 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 a failing MS/MSD since both the “F” flag and the “M” flag supercede the “J” flag in the AFCEE QAPP flag hierarchy.

·        All post digestion spike criteria were met except for the following:

Date

Sample ID

%R

QC Criteria

4/10/01

AOC42-SB01 (14.5-15.0)

83

85-115%

The lead results for all samples analyzed in the same batch were previously flagged “J” due to the non-compliant dilution test.  Therefore, no additional corrective action was necessary.

    There were three method blanks, three 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 forty-five (45) samples, including thirty (30) environmental soil samples, four field duplicates, four sets of MS/MSDs, and three equipment blanks.  The samples were collected on March 16, 19, 21 and 26, 2001 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 AOC42-SS04 (0.5-1.0), AOC42-SB02 (7.0-8.0), AOC42-SB05 (15.0-16.0) and AOC43-SS03 (0.5-1.0) were analyzed as MS/MSDs for these SDGs.

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

Sample ID

Analyte

MS %R

MSD %R

QC Criteria

AOC42-SS04 (0.5-1.0)

Mercury

46

52

77-120

    The mercury results for the samples from the same site and 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

AOC42-SS04 (0.5-1.0)

AOC42-SS04 (0.5-1.0) FD

AOC42-SB02 (7.0-8.0)

AOC42-SB02 (7.0-8.0) FD

AOC42-SB05 (15.0-16.0)

AOC42-SB05 (15.0-16.0) FD

AOC43-SS03 (0.5-1.0)

AOC43-SS03 (0.5-1.0) FD

    All MS/MSD and field 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:

    ·        Comparing the COC procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining field and laboratory blanks for cross contamination of samples during collection and analysis.

    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.

·        All initial calibration criteria were met.

·        All initial and continuing calibration verification criteria were met.

·        All second source calibration criteria were met.

    There were three method blanks, three equipment blanks and numerous calibration blanks associated with the lead 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%.

DO5068 DATA VERIFICATION SUMMARY REPORT
for explosives samples collected from

camp stanley storage activity

Boerne, TEXAS

Data Verifiers: Laura Kelley and Sandra Dover

Parsons ES

INTRODUCTION

    The following data verification summary report covers environmental soil samples collected from the Camp Stanley Storage Activity (DO5068) on March 16, 2001.  The samples from the following Sample Delivery Group (SDG) were analyzed for explosives:

01C-0048-02

 

 

    Field quality control sample collected was a field duplicate sample.  All field quality control samples were analyzed for the same parameters as their associated samples. Equipment blank (EB-01, collected on 3-16-01) was analyzed and reported in SDG 00C-0048-01.

    All samples were collected by Parsons Engineering Science (Parsons ES) and analyzed for explosives by DataChem Laboratories following procedures outlined in the AFCEE QAPP, version 3.0.  Target analytes include: 1,3,5-trinitrobenzene, 1,3-dinitrobenzene, 2,4,6-trinitrotoluene, 2,4-dinitrotoluene, 2,6-dinitrotoluene, 2-nitrotoluene, 3-nitrotoluene, 4-nitrotoluene, HMX, nitrobenzene, RDX and tetryl.

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 includes sample results; the summary of laboratory quality control results; case narrative; raw data; chain-of-custody forms and cooler or container information checklists.  The analyses and findings presented in this report are based on the reviewed information, and whether guidelines in the AFCEE QAPP were met. 
EXPLOSIVES SDG 01C-0048-02

General

    This SDG consisted of nine (9) samples, including eight (8) environmental soil samples and one field duplicate sample.  The samples were collected on March 16, 2001 and analyzed for explosives.

    The explosives analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 8330.  All samples for this SDG were analyzed following the procedures in the AFCEE QAPP.  All samples collected were prepared and analyzed within the holding times required by the method.

Accuracy

    Accuracy was evaluated using the %R results for the MS/MSD samples, LCS sample, and surrogate spikes.  Sample AOC42-SS04 was used as the MS/MSD sample for this SDG.

    The MS/MSD, LCS, and surrogate spike %Rs were within acceptance criteria.

Precision

    Precision was evaluated using the Relative Percent Difference (RPD) results obtained from MS/MSD values and the field duplicate values.  Sample AOC42-SS04 was used as the MS/MSD for this SDG.  There was one field duplicate pair analyzed in this SDG.  Sample AOC42-SS04 was collected in duplicate and analyzed as a field duplicate.

All MS/MSD and field duplicate RPDs were within acceptance criteria.

Completeness

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

    All results were considered usable.  The completeness for this SDG is 100% compared to the minimum acceptance limit of 90%.

Representativeness

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

    ·        Comparing the chain-of-custody procedures to those described in the AFCEE QAPP;

·        Comparing actual analytical procedures to those described in the AFCEE QAPP;

·        Evaluating holding times; and

·        Examining laboratory blanks for cross contamination of samples during analysis.

    All samples in this SDG were analyzed following the chain-of-custody (COC) and analytical procedures described in the AFCEE QAPP.  All samples were prepared and analyzed within the holding times required for the analysis.  The average of three injections for each initial calibration standard was used to establish the linearity check.

·        All initial and continuing calibration criteria were met.

·        All second source calibration criteria were met.

·        Second column confirmation was not required since all sample results were non-detect.

    There was one method blank and one equipment blank associated with the explosive analyses in this SDG.  Both blanks were free of any target compounds above the RL. 

    The equipment blank, EB-01 (03/16/01), was analyzed in a different analytical batch (SDG 00C-0048-01).  This equipment blank contained a low level of 1,3,5-trinitrotoluene between the MDL and RL.  This compound was flagged with an “F” as required by the AFCEE QAPP.  No action was required for the equipment blanks since all associated soil samples were non-detect.

    All data are considered usable and all flags are correct according to AFCEE QAPP, version 3.0.