Geologic & Hydrogeologic
Geologic and hydrogeologic principles provide the scientific foundation for understanding subsurface conditions, groundwater flow, and contaminant behavior in both natural and engineered environments. These principles are essential for conducting environmental assessment, remediation planning efforts, infrastructure development, or long-term resource management. Subsurface systems are inherently heterogeneous. Recognizing and characterizing geologic heterogeneity is critical to realistic interpretation of subsurface data and model results.
AA GeoEnvironmental offers independent geological and hydrological review services that emphasize technical reliability, scientific validity, and clear interpretation.
Our geological reviews focus on:
- Site stratigraphy and lithologic descriptions.
- Soil and rock classifications and depositional environments.
- Structural features (faults, fractures, bedding, discontinuities).
- Lateral and vertical heterogeneity and its implications.
- Consistency between boring logs, geophysical data, and interpretations.
Hydrological and Hydrogeological evaluate:
- Aquifer characterization and conceptual site models.
- Groundwater flow direction and recharge/discharge mechanisms.
- Hydraulic properties (e.g., conductivity, transmissivity, storativity).
- Interaction between surface water, vadose zone, and groundwater.
- Monitoring network design and data interpretation.
The conclusions drawn from geologic and hydrologic studies are profoundly influenced by the quality of the data and the nuances of its interpretation. AA GeoEnvironmental conducts an assessment of: completeness and representativeness of subsurface data, appropriate use of field and laboratory results, handling of uncertainty, data gaps and assumptions, and integration of multiple data sources into a coherent framework.
Our technical reviews help highlight conceptual inconsistencies, unsupported assumptions, oversimplification of complex systems, strengths/limitations, and uncertainties.
What this Service Is
- Review and interpretation of geologic and hydrologic investigations.
- Evaluation of scientific methods, assumptions, and conclusions.
- Support for technically defensible documentation.
- Applicable to environmental, infrastructure, and water-resource projects.
What this Service Is Not
- Field investigation, sampling, or drilling services.
- Regulatory permitting or approval.
- Legal, compliance, or decision-making authority.
Clients maintain sole responsibility for the implementation and compliance to regulatory standards.