Attachment 03 - Cannon Soil Sampling Data Validation Guidance.pdf

Contract No:

Aircraft Fire Training Pond Soil Sampling

September 2024

DATA VALIDATION PROCEDURES

Step

IIa/IIb

Matrix

Analytical

Group

Anticipated Concentration

Level

Validation Criteria

Data Validator (title and organizational affiliation)

IIa/IIb

Soil and Sediment

All Analytical Parameters

Standard

Criteria cited in the SOW, Method and SOP criteria, EPA QA/G8, DOD QSM 5.3, and National Functional Guidelines for Data Validation.

Acronyms:

DOD: Department of Defense EPA: United States Environmental Protection Agency PFAS: per- and polyfluoroalkyl substances QSM: quality systems manual RI: remedial investigation SOP: standard operating procedure

Data Validation

The Contractor Project Team data validation team will validate the laboratory data in accordance with the documents/guidance listed below:

• Current DoD General Data Validation Guidelines, (EDQW 2019)

• Data Validation Guidelines Module 3: Data Validation Procedure for Per- and Polyfluoroalkyl Substances Analysis by QSM Table B-24 (EDQW 2022)

• Guidance on Environmental Data Verification and Data Validation (EPA 2002)

The data validation strategy will be consistent with the applicable guidelines. With the exception of the investigation-derived waste sample, the data validation will consist of 90% Stage 2B validation and 10% Stage 4 validation of each sample delivery group. Field data will also be validated against the SOPs.

Full Data Validation

Full validation (Stage 4) will be completed on 10% of each sample delivery group collected for analysis of the constituents of concern. The data validator will request any missing information needed from the laboratory. Elimination of the data from the review process is not allowed. 90% of all data will be validated to stage 2B, in accordance with the established validation criteria listed in All data packages will consist of sample results, QC summaries, and all raw data

Contract No:

Aircraft Fire Training Pond Soil Sampling

September 2024 associated with the instrument calibration and sample results and QC summaries. During the data validation process, the qualifiers shown below will be applied to the data as applicable.

• U: The analyte was analyzed for but was not detected at or above the reported sample quantitation limit.

• J: The analyte was positively identified; the associated numerical value is the approximate concentration of the analyte in the sample.

• J+: The analyte was positively identified; however, the associated numerical value is likely to be lower than the reported concentration of the analyte in the sample due to positive bias of associated QC or calibration data or attributable to matrix interference.

• J-: The analyte was positively identified; however, the associated numerical value is likely to be higher than the reported concentration of the analyte in the sample due to negative bias of associated QC or calibration data or attributable to matrix interference.

• UJ: The analyte was not detected above the reported sample quantitation limit. However, the reported quantitation limit is approximate and may or may not represent the actual limit of quantitation necessary to measure the analyte accurately and precisely in the sample.

• X: The sample results were affected by serious deficiencies in the ability to analyze the sample and meet quality control criteria. The presence or absence of the analyte cannot be verified. Acceptance or rejection of the data should be decided by the project team (which should include a project chemist), but exclusion of the data is recommended.