OUR SERVICES
AVIATION ENVIRONMENTAL & PFAS SERVICES
Complete PFAS & Contaminated-Soil Solutions
Built for the Aviation Industry
Every airport has a different operational history, regulatory landscape, and construction schedule. That’s why Division 31 GEO delivers turn-key programs as well as on‑demand services that plug in exactly where your project needs support.
Airports can engage us through flexible service options - from full program delivery to selectable service components tailored to a single phase of work. Whether you need investigation, design, construction support, remediation, or long‑term monitoring, our team integrates seamlessly with:
- Airport management and operations
- Prime engineering consultants
- General contractors
- ARFF and maintenance leadership
- Environmental compliance teams
We are versatile, well‑resourced, and capable of supporting airports of every size, from major hubs to rural GA facilities. Our aviation group can serve as your project lead, sub‑consultant, or site manager of record, engaging at any stage of the project lifecycle.
SERVICES
COMPLIMENTARY INITIAL CONSULTATION
Your first step - at no cost.
We begin with a structured 60–90 minute consultation to understand your airport’s PFAS concerns, regulatory drivers, and project needs.
What’s Included
- Review of existing data and reports
- Discussion of regulatory context
- Identification of potential PFAS source areas
- Preliminary strategy and cost‑range discussion
- Determination of fit and next steps
SITE VISIT, INTERVIEW & AIRFIELD WALKTHROUGH
Site Visit & Operational Interview
Ground‑truthing your airport’s PFAS story.
Our team conducts an on‑site walkthrough to map operational history, interview key staff, and identify potential source areas.
What We Do On‑Site
- ARFF, fueling, and maintenance interviews
- Review of historical operations and construction
- Mapping of PFAS and co‑contaminant zones
- Identification of utilities, drainage, and soil pathways
- Integration with capital improvement plans
PHASE I, II, AND III ENVIRONMENTAL INVESTIGATION
Aviation-specific PFAS and contaminated-soil characterization.
We deliver comprehensive, multi-phase investigations tailored to airport operations and regulatory requirements.
Capabilities
- Phase I: Records review, interviews, reconnaissance
- Phase II: Soil, groundwater, stormwater, sediment, air sampling
- Phase III: Delineation, mass estimation, remedial planning
- EPA Method 1633 and advanced analytical coordination
- 3D visualization of PFAS distribution and migration
CONCEPTUAL SITE MODEL (CSM) DEVELOPMENT
The foundation of every defensible PFAS strategy.
Our CSMs integrate operational history, hydrogeology, soil chemistry, and fate‑and‑transport modeling to create a clear, defensible understanding of PFAS behavior at your airport.
What We Deliver
- Airport‑specific PFAS source mapping
- Soil and groundwater migration pathways
- Receptor and exposure pathway analysis
- Integration with geotechnical data
- Basis for design, permitting, and regulatory negotiation
REMEDIATION PLANNING & PROPOSAL DEVELOPMENT
Clear, actionable, and aligned with airport operations.
We develop detailed scopes, cost estimates, and remedial strategies tailored to your airport’s constraints and regulatory requirements.
Includes
- Evaluation of soil management alternatives
- Avoidance, minimization, treatment, disposal pathways
- Cost modeling and value engineering
- FAA and AIP integration
- Regulatory coordination
PRE-CONSTRUCTION TESTING & VALIDATION
Know what you’re digging into - before you dig.
We perform targeted pre‑construction sampling to validate PFAS concentrations, confirm soil classifications, and prevent costly surprises.
Services
- Pre-design soil sampling
- Waste profiling
- Hot-spot confirmation
- Construction contingency planning
- PFAS-aware earthwork guidance
PERMITTING & REGULATORY SUBMITTALS
We navigate the regulatory maze so you don’t have to.
Our team prepares all required PFAS-related regulatory documents and coordinates directly with agencies.
Capabilities
- Work plans and sampling plans
- Remedial action plans
- Closure documentation
- Risk assessments
- Institutional controls
- Regulatory negotiation
CONSTRUCTION, REMEDIATION & FIELD EXECUTION
Turn-key or integrated with your contractor.
We support or lead PFAS-aware construction and remediation activities with minimal disruption to airport operations.
Field Services
- Real‑time field screening
- Waste segregation & stockpile management
- Containment cell construction
- Stabilization/solidification
- Soil washing & thermal treatment coordination
- Stormwater controls
PROGRESS TESTING & VERIFICATION
Ensuring your remediation is working - every step of the way.
We provide ongoing sampling and analysis to verify performance and adjust strategies as needed.
Includes
- Verification sampling
- Waste profiling
- Treatment performance monitoring
- Adaptive management recommendations
COMPLETION, CLOSEOUT & LONG-TERM MONITORING
From project completion to long-term compliance.
We deliver full closeout documentation and long-term monitoring programs that keep airports compliant and prepared for future development.
Services
- As‑built documentation
- Closure reports
- Groundwater monitoring networks
- Stormwater and sediment monitoring
- Institutional control verification
- Annual PFAS strategy sessions
Turn-Key or On‑Demand - D31 GEO Delivers What Your Airport Needs, When You Need It
Every airport project is different. Some require full-scale investigation and remediation. Others need rapid construction support, regulatory strategy, or targeted PFAS soil management. That’s why D31 GEO offers flexible service options and selectable service components that match your operational, regulatory, and budget requirements.
Whether we’re leading the entire program or supporting a single phase, our aviation specialists deliver:
- On‑demand services that integrate with your engineering and construction teams
- Turn-key PFAS and contaminated‑soil solutions from discovery through closure
- Selectable service components for investigation, design, construction, remediation, or monitoring
- Aviation-specific expertise that protects operations and reduces project risk
- Seamless coordination with FAA, AIP requirements, and airport safety protocols
From major commercial hubs to small GA airports, heliports, and military airfields, D31 GEO provides the clarity, certainty, and technical depth needed to keep your projects moving - safely, efficiently, and in full compliance.