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[AOC 36]
The following data validation summary report covers environmental soil samples and associated field quality control (QC) samples collected from Camp Stanley Storage Activity (CSSA) during the period January 10 and 11, 2000 for the Area of Concern (AOC) investigation. The samples were analyzed for a reduced list of volatile organic compounds (VOCs), which included 1,1-dichloroethene, cis-1,2-dichloroethene, trans-1,2-dichloroethene, tetrachloroethene and trichloroethene. The samples were assigned to the following laboratory Sample Delivery Groups (SDGs):
4442 4443 4444
Field quality control samples collected were trip blanks; equipment blanks; matrix spike/matrix spike duplicates (MS/MSD); and field duplicates. All field quality control samples were analyzed for VOCs.
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.
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 the guidelines in the AFCEE QAPP were met.
These SDGs consisted of forty (40) samples, including thirty (30) environmental soil samples, three field duplicate soil samples, one matrix spike/matrix spike duplicate set, two equipment blank samples and three trip blank samples. The samples were collected on January 12, 2000 and were analyzed for volatile organic compounds (VOCs).
The VOC analyses were performed using United States Environmental Protection Agency (USEPA) SW846 Method 8260B. Except where indicated in this report, all samples for these SDGs were analyzed following the procedures and protocols outlined in the AFCEE QAPP. All samples collected were prepared and analyzed within the holding times required by the method.
Accuracy was evaluated using the %R results for the MS/MSD samples; LCS samples; and surrogate spikes. Sample AOC38-SS15 (1.5-2.0) was used as the MS/MSD sample in these SDGs.
All MSMSD, LCS and surrogate %Rs were within acceptance criteria.
Precision was evaluated using the Relative Percent Difference (RPD) results obtained from MS/MSD results; and the field duplicate analyte values. Sample AOC38-SS15 (1.5-2.0) was used as the MS/MSD sample in these SDGs. Sample AOC36-SS100 (0-0.5) was the field duplicate of sample AOC36-SS10 (0-0.5). Sample AOC38-SS101 (1.5-2) was the field duplicate of sample AOC38-SS15 (1.5-2). Sample AOC38-SS102 (1-1.5) was the field duplicate of sample AOC38-SS21 (1-1.5).
All MS/MSD and field duplicate RPDs were within acceptance criteria.
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 these SDGs were usable. The completeness for these SDGs is 100.0% compared to the minimum acceptance limit of 90%.
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 chain-of-custody (COC) and analytical procedures described in the AFCEE QAPP. All samples were prepared and analyzed within the holding time required by the method.
There were four method blanks, two equipment blanks and three trip blanks associated with the VOC analyses in these SDGs. All blanks were free of VOCs above the RL.