DNAPL stands for dense non-aqueous phase liquid. It refers to a group of liquid organic compounds that are denser than water and have low solubility in water. DNAPLs include various chlorinated solvents, such as trichloroethylene (TCE), perchloroethylene (PCE), and carbon tetrachloride, as well as other organic compounds. When released into the environment, DNAPLs can migrate through the subsurface and accumulate in soil and groundwater, posing a risk to human health and the environment. DNAPL contamination is often challenging to remediate due to the complex subsurface distribution and behavior of DNAPLs. DNAPL remediation typically involves a combination of technologies, such as source zone treatment and solute plume management. Source zone treatment involves treating the DNAPL source area, where the highest concentrations of DNAPL are present, using in situ or ex situ remediation technologies, such as chemical reduction or oxidation, thermal treatment, or bioremediation. Plume management involves treating the dissolved phase plume, using technologies such as chemical reduction or bioremediation.
Overview & Services
Remediation Roundup New Jersey Agenda
- Identification of Data Gaps (60 min)
- Quantitative High Resolution Site Characterization (qHRSC) and 3D Modeling – Duane Guilfoil, President, AST Environmental, Inc.
- Working Smarter Not Harder to Characterize Fractured Bedrock (0.5 CECs) – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- In Situ Remediation Technologies for VOCs (60 min)
- Trap and Treat Approach – Petroleum Hydrocarbon Remediation (0.5 CECs) – Duane Guilfoil, President, AST Environmental, Inc.
- Trap and Treat Approach – Solvent Remediation (0.5 CECs) – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- Shielding Against Vapor Intrusion Using Spray-Applied Barrier Technology (30 min) – Matt Geary, Technical Sales Manager, Environmental Products, CETCO
- Heavy Metals Treatment with Abiotically Synthesized Iron Sulfides (30 min) – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- Remediation of PFAS Using Patented Adsorbent Technology (30 min) – Matt Geary, Technical Sales Manager, Environmental Products, CETCO
- Emplacement of Slurries Using High-Energy Injection (90 min)
- Remediation Success with the Trap and Treat Approach (0.5 CECs) – Duane Guilfoil, President, AST Environmental, Inc.
- GeoTAP Method: Overcoming Unconsolidated DPT Refusal with Pre-Drill (0.5 CECs) – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- Unlocking the Secrets to Fractured Bedrock Injection (0.5 CECs) – Duane Guilfoil, President, AST Environmental, Inc.
Remediation Roundup North Carolina Agenda
Morning Session 10:00 am to 12:00 pm
- Data Gaps – Identification and Resolution: Quantitative High Resolution Site Characterization (QHRSC) and 3D Modeling – Nathan Thacker, Senior Geologist, AST Environmental, Inc.; David Heicher, Founder, GeoImaging Systems, LLC )
- Conventional sampling program limitations and benefits of high-density sampling for in situ remediation
- Implementing a high-density soil and groundwater sampling program in the field
- Qualitative HRSC tools, methods and data interpretation
- Integrating high-density data with other information sources (historical data, qualitative screening tools, geophysical surveys) to refine the CSM
- Development of 3D data visualizations and refinement of legacy conceptual site models.
- In-Situ Remedial Technologies: VOCs and Petroleum Hydrocarbon Remediation Using In Situ Products – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- Trap & Treat Technologies – Technology, selection, speciated data, and key design parameters
- Differences and drawbacks among various activated carbon platforms – slurries vs liquids
- How is Trap & Treat more than just sequestration?
- Vapor Intrusion Mitigation: Shielding Against Vapor Intrusion Using Spray-Applied Barrier Technology – Matt Geary, Technical Sales Manager, Environmental Products, CETCO
- Spray applied Gas Vapor Barrier technology including the latest diffusion coefficients for COCs and a discussion of the EVOH technology in the Liquid Boot Plus system.
Catered Lunch Provided: 12:00 to 1:00 pm
Afternoon Session 1:00 pm to 4:00 pm
- In-Situ Remedial Technologies: Heavy Metals Treatment with Abiotically Synthesized Iron Sulfides – Derek Pizarro, CPG, Sr. Product Mgr., AST Environmental, Inc.
- Mackinawite Structured Iron Sulfides
- Metal and mixed metal treatment chemistries
- Remediation applications and examples
- GeoTAP and hexavalent chromium case study
- Coal ash bench study
- Primer on Environmental Liability and Emerging Legal Issues
- Background on types of environmental liability, due diligence standards and Phase I ESAs
- Overview of risk-based remediation standards and institutional controls
- Update on regulation of PFAS and other emerging compounds
- In Situ Remedial Technologies: Remediation of PFAS Using Patented Adsorbent Technology – Matt Geary, Technical Sales Manager, Environmental Products, CETCO
- Fluoro-Sorb® Adsorbent technology – A review of university data, case studies and deployment methods.
- Full spectrum binding across the spectrum of PFAS, including PFOA, PFOS, PFHxS, and PFNA
- Impact by co-contaminants in the waste stream, such as gasoline- and diesel-range hydrocarbons, chlorinated solvents, natural organic matter (NOM), salinity, and pH, in comparison to other PFAS adsorbents.
- In Situ Amendment Delivery Methods: Emplacement of Slurries Using High-Energy Injection and Soil Mixing Methods – Nathan Thacker & Derek Pizarro, AST Environmental, Inc.
- Optimized emplacement methods in overburden, transition zone, saprolite, and bedrock geologies
- Design variables: Injection point spacing, flow rate and pressure, slurry volumes
- Injection systems, tooling
- Quality control, performance monitoring
- The Consultant’s Perspective: Assembling the [Puzzle] Pieces for your Project – Lydia Ross, PE, GEI Consultants
- Discussion will highlight available tools and resources and share lessons learned through practical applications of in situ remedial technologies at 100s of sites
- Pitfalls and tips
- Provide tangible takeaways that can be implemented throughout the project life-cycle to increase efficacy and help you achieve your remedial goals
- Wrap-up and Final Q&A – Panel Style Discussion
GWPNC Social at Primal Brewery – 4 pm to 7 pm Sponsored by AST Environmental & CETCO
Join us at Primal Brewery, located next door to the workshop venue for complimentary locally crafted brews at the GWPNC Social – a chance to network, debrief and discuss the day’s learnings in a casual setting.