Services

PNW Analytical provides independent environmental data validation and laboratory quality assurance consulting services to support regulatory compliance and data usability.

Services are tailored to meet project-specific requirements, regulatory guidance, and data quality objectives.

LEVELS OF DATA REVIEW

LEVEL II- Screening Validation

Holding time evaluation
Detection and reporting limits
Blank contamination review
Basic QC checks
Identification of major data limitations

LEVEL III - Intermediate Review

Calibration (initial/continuing)
Blanks
LCS/LCSD
Matrix spikes (MS/MSD)
Surrogates & internal standards
Compound identification
Qualifier assignment
Data usability

LEVEL IV - Full Validation

Calibration (initial/continuing)
Blanks
LCS/LCSD
Matrix spikes (MS/MSD)
Surrogates & internal standards
Compound identification
Qualifier assignment
Data usability

Project Specific Validation

Validation approaches tailored to:

DOE requirements
CLP protocols
Project-specific DQOs
Client-defined criteria

Validation approaches are adapted to the specific analytical method, matrix, and project requirements to ensure technically defensible data interpretation.

METHOD SPECIFIC EXPERTISE

Volatile Organic Compounds (VOCs) - EPA 8260

Calibration (%RSD, %D)
Internal standards
Surrogates
Ion ratios and retention time
Blank contamination

Semi-Volatile Organic Compounds (SVOCs) - EPA 8270

Calibration
TIC identification
Surrogates
Matrix effects

Metals - EPA 6010/6020

ICP-OES / ICP-MS
Interference checks
Serial dilution
Matrix spike

Hexavalent Chromium - EPA 7196 / 218.6

Holding times (critical)
Preservation
QC evaluation

Dioxins/Furans - EPA 8290

HRMS criteria
Ion abundance ratios
Isotope dilution

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