Data Validation Summary Report

Data Validation Summary Report - O'Brien & Gere Laboratory 5295

For AOC 65 Samples Collected from CSSA, Boerne,TX

Data Validator: Michelle Wolfe

Introduction

The following data validation summary report covers environmental soil and aqueous samples and associated field quality control (QC) samples collected from the Camp Stanley Storage Activity AOC 65 (under AETC contract) on April 7, 2000. The samples in the following Sample Delivery Group (SDG) were analyzed for volatile organic compounds (VOCs) and metals:

5295

Field quality control samples collected were trip blank, equipment blank, matrix spike/matrix spike duplicates (MS/MSD); and field duplicates. The trip blank was analyzed for VOCs only. All other field quality control samples were analyzed for the same parameters as their associated samples.

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

Evaluation Criteria

The data submitted by the laboratory has been reviewed and validated 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 narrative; raw data; and chain-of-custody forms. The analyses and findings presented in this report are based on the reviewed information, and whether guidelines in the AFCEE QAPP were met.

VOC SDG 5295

General

This SDG consisted of seven (7) samples, including two (2) confirmation environmental soil samples, one field duplicate soil sample, one set of matrix spike/matrix spike duplicate samples, one equipment blank sample and one trip blank sample. The samples were collected on April 7, 2000 and analyzed for volatile organic compounds (VOCs).

VOC analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 8260B. All samples for this SDG were collected and analyzed following the procedures and protocols outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding time required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples; LCS samples; and surrogate spikes. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample in this SDG.

All MS/MSD %Rs were within acceptance criteria except for as follows:

Sample AOC65-Pit 1 (0-0.5�)

Analyte

MS %R

MSD %R

1,1,1,2-tetrachloroethane

tetrachloroethene

vinyl chloride

110

167

62-108

61-135

36-144

- The %R was compliant.

The results for the non-compliant analytes in the samples from the same site and with similar matrix as the MS/MSD sample were flagged �M� to indicate a matrix effect was present.

All LCS %Rs were within acceptance criteria except for as follows:

Sample AOC65-Pit 1 (0-0.5�)

Analyte	LCS %R	QC
1,1,1,2-tetrachloroethane	116	62-108

No action was necessary since there were no positive hits of 1,1,1,2-tetrachloroethane in the associated samples.

All surrogate %Rs were within acceptance criteria.

Precision Results

Precision was evaluated using the Relative Percent Difference (RPD) results obtained from MS/MSD %Rs; and the field duplicate analyte values. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample in this SDG. Sample AOC65-Pit 1 (0-0.5�) FD was the field duplicate of sample AOC65-Pit 1 (0-0.5�).

All MS/MSD RPDs were within acceptance criteria except for as follows:

Sample AOC65-Pit 1 (0-0.5�)

Analyte	RPD	QC
vinyl chloride	33	30

The vinyl chloride results for the non-compliant analytes in the samples from the same site and with similar matrix as the MS/MSD sample were flagged �M� to indicate a matrix effect was present.

All field duplicate RPDs were within acceptance criteria except for tetrachloroethene (33.7% R). The tetrachloroethene positive results in the associated samples collected on the same day as the field duplicate pair were considered estimated and flagged �J�.

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 for the samples in this SDG were 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 field and laboratory blanks for cross contamination of samples during sample collection or analysis.

All samples in this SDG were collected and analyzed following the sampling, chain-of-custody (COC) and analytical procedures described in the AFCEE QAPP. All samples were prepared and analyzed within the holding time required for the analysis.

	All instrument performance check criteria were met.
	All initial calibration criteria were met.
	All continuing calibration criteria were met.
	All second source verification criteria were met.
	All internal standard criteria were met.

There were two method blanks, one equipment blank, and one trip blank associated with the VOC analyses in this SDG. All blanks were free of VOCs above the RL.

Metals (BY 6010B) SDG 5295

General

This SDG consisted of six (6) samples, including two (2) environmental soil samples, one field duplicate soil sample, one set of matrix spike/matrix spike duplicate samples and one equipment blank sample. The samples were collected on April 7, 2000 and analyzed for metals; barium, chromium, copper, nickel and zinc.

The barium, chromium, copper, nickel and zinc analyses were performed using USEPA SW846 Method 6010B. All samples for this SDG were analyzed following the procedures outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding time required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample for this SDG.

All MS/MSD and LCS %Rs were within acceptance criteria.

Precision Results

Precision was evaluated using the Relative Percent Difference (RPD) results obtained from MS/MSD results and the field duplicate analyte values. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample in this SDG. Sample AOC65-Pit 1 (0-0.5�) FD was the field duplicate of sample AOC65-Pit 1 (0-0.5�).

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 to be 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 sampling, chain-of-custody (COC) and analytical procedures described in the AFCEE QAPP. All samples were prepared and analyzed within the holding time required for the analysis. Four of the five samples in this SDG were diluted 1 to 5 due to the high calcium in the soil samples.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.
	The chromium, copper and nickel results in the sample chosen for the dilution test were less than the reporting limit. The diluted results for barium and zinc were less than the reporting limit. Therefore, the dilution was not required.
	All recovery test criteria were met.

There were two method blanks, one equipment blank and calibration blanks associated with the metal analyses in this SDG. All blanks were free of any metals above the RL.

Arsenic SDG 5295

General

The arsenic analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 7060A. All samples for this SDG were analyzed following the procedures outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding time required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample for this SDG.

All MS/MSD and LCS %Rs were within acceptance criteria.

Precision Results

Precision was evaluated using the Relative Percent Difference (RPD) results obtained from MS/MSD results and the field duplicate values. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample in this SDG. Sample AOC65-Pit 1 (0-0.5�) FD was the field duplicate of sample AOC65-Pit 1 (0-0.5�).

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 to be 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 field and laboratory blanks for cross contamination of samples during sample collection or 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 time required for the analysis. Some of the samples were analyzed at a dilution. The laboratory used the ICP results to determine if a dilution was required.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.
	The dilution test criteria were met.

There were two method blanks, numerous calibration blanks and one equipment blanks associated with the arsenic analyses in this SDG. All blanks were free of any arsenic above the RL.

Cadmium SDG 5295

General

The cadmium analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 7131. All samples for this SDG were analyzed following the procedures outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding time required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample for this SDG.

All MS/MSD and LCS %Rs were within acceptance criteria.

Precision Results

All MS/MSD and field 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 to be usable. The completeness for this SDG is 100.0% 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 field and laboratory blanks for cross contamination of samples during sample collection or analysis.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.
	The dilution test criteria were met.
	The recovery test criteria were met.

There were two method blanks, numerous calibration blanks and one equipment blanks associated with the cadmium analyses in this SDG. All blanks were free of any cadmium above the RL.

Lead SDG 5295

General

This SDG consisted of six (6) samples, including two (2) environmental soil samples, one field duplicate soil samples, one set of matrix spike/matrix spike duplicate samples and one equipment blank sample. The samples were collected on April 7, 2000 and analyzed for lead.

The lead analyses were performed using USEPA SW846 Method 7421. All samples for this SDG were analyzed following the procedures outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding times required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample for this SDG.

All MS/MSD and LCS %Rs were within acceptance criteria.

Precision Results

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 to be 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 field and laboratory blanks for cross contamination of samples during sample collection or analysis.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.
	The dilution test criteria were met.
	The recovery test criteria were met.

There were two method blanks, numerous calibration blanks and one equipment blanks associated with the lead analyses in this SDG. All blanks were free of any lead above the RL.

Mercury SDG 5295

General

This SDG consisted of six (6) samples, including two (2) environmental soil samples, one field duplicate soil sample, one set of matrix spike/matrix spike duplicate samples and one equipment blanks. The samples were collected on April 7, 2000 and analyzed for mercury.

The mercury analyses were performed using USEPA SW846 Method 7471A. All samples for this SDG were analyzed following the procedures outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding time required by the method.

Accuracy Results

Accuracy was evaluated using the %R results for the MS/MSD samples and LCS sample. Sample AOC65-Pit 1 (0-0.5�) was analyzed as the MS/MSD sample for this SDG.

All MS/MSD and LCS %Rs were within acceptance criteria.

Precision Results

All MS/MSD and field 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 to be 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 field and laboratory blanks for cross contamination of samples during sample collection or analysis.

All samples in this SDG were collected and analyzed following the chain-of-custody (COC) and analytical procedures described in the AFCEE QAPP. All samples were prepared and analyzed within the holding time required for the analysis.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.

There were two method blanks, numerous calibration blanks and one equipment blank associated with the mercury analyses in this SDG. All blanks were free of any mercury above the RL.