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RL83 Data Verification Summary Report

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Data Verifiers: Michelle Wolfe & Tammy Chang

Introduction

The following data verification summary report covers environmental soil samples and associated field quality control (QC) samples collected from the Camp Stanley (under RL83) on January 25, 2001. The samples in following laboratory Sample Delivery Group (SDG) were analyzed for TCLP metals including antimony, arsenic, barium, beryllium, cadmium, chromium, lead, nickel, selenium, silver, vanadium, and mercury:

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Field quality control samples collected were trip blanks; matrix spike/matrix spike duplicates (MS/MSD); and field duplicates. 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 APPL, Inc. following 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 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.

TCLP Metals SDG 34458

General

This SDG consisted of twelve (12) confirmation environmental soil sample. Samples were collected on January 25, 2001 and analyzed for TCLP metals. One sample was analyzed for TCLP cadmium. One sample was analyzed for TCLP chromium. Three samples were analyzed for TCLP lead. Two samples were analyzed for TCLP barium. Five samples were analyzed for TCLP antimony, arsenic, barium, beryllium, cadmium, chromium, lead, nickel, selenium, silver and vanadium.

The TCLP extractions were performed using United States Environmental Protection Agency (USEPA) SW846 Method 1311. The metal 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 times required by the method.

Accuracy

Accuracy was evaluated using the %R result of the LCS sample.

Most of the LCS %Rs were within acceptance criteria except for as follows:

010222ALCS
Analyte	LCS %R	QC (%)
Barium	190.4	75-125

The barium result in the associated samples was considered estimated and flagged �J�.

Precision

Precision can not be determined since there was no duplicate analysis involved in this SDG.

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 the analysis.

All samples in this SDG were analyzed following the chain-of-custody forms (COCs) and analytical procedures described in the AFCEE QAPP. All samples were prepared and analyzed with the holding times required for the analysis.

	All initial and continuing calibration criteria were met.
	All second source calibration criteria were met.
	All interference check criteria were met.
	The antimony, arsenic, beryllium, cadmium, chromium, nickel, selenium, silver and vanadium results for the sample chosen for the dilution test were less than the reporting limit. Therefore, the dilution test results were not applicable for these analytes. The dilution test was met for lead. The dilution test result was outside acceptance criteria for barium as follows:

Sample DD-SIFT 04 (0.5-1.0)
Analyte	%D	QC (%)
Barium	15.0	10

The barium results in the associated samples was considered estimated and flagged �J�.

All post digestion spike criteria were met.

There was one method blank and several calibration blanks associated with the metal analyses in this SDG. All calibration blanks were free of any metals above the RL. The method blank, 01022A-BLK, contained 0.233 mg/l of barium. No further action was needed since the barium results were already flagged �J� due to non-compliant LCS %Rs and dilution test %D.

TCLP Mercury SDG 34668

General

This SDG consisted of six (6) confirmation environmental soil samples. The sample was collected on January 25, 2001 and analyzed for TCLP mercury.

The TCLP extractions were performed using United States Environmental Protection Agency (USEPA) SW846 Method 1311. The mercury analyses were performed using USEPA SW846 Method 7470A. 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.