Synergistic Strategies for Direct-Push HRSC in Remedial Actions
This presentation was given at the AEHS 36th Annual International Conference on Soils, Sediments, Water, and Energy on October 20, 2020, at UMASS, Amherst, Massachusetts.
http://www.aehsfoundation.org/east-coast-conference.aspx
Session 05: Synergistic Technology Applications for Soil, Groundwater, and Sediment
Day: Tuesday, October 20, 2020
Time: 10:00 AM - 1:30 PM
Location: Room 2
Session Type: Platform Session
PE 459 LECTURE 2- natural gas basic concepts and properties
Synergistic Strategies for Direct-Push HRSC in Remedial Actions
1. High-Resolution Site Characterization (HRSC):
Eric W. Garcia, PG, CEG, CHG
Principal Hydrogeologist
Synergistic Strategies for
Direct-Push HRSC in Remedial Actions
36th Annual International Conference on
Soils, Sediments, Water, and Energy
October 19-23, 2020
11. • Fast, Continuous, Real-time Profiling
• High Resolution – 0.05 ft (1.5 cm)
• Digital Output
DP High-
Resolution Site
Characterization
(HRSC)
12. DP HRSC is NOT
• A Replacement for Discrete Analytical Sampling
DP HRSC CAN
• Compliment & Improve Discrete Analytical Sampling
Define Preferential Sample Locations
High-Resolution Site Characterization (HRSC)
13. Benefits:
• Reduced IDW’s
• Better Analytical Data Quality (Selection)
• Better Analytical Data Definition (Data Density)
• Reduction in Iterative Events (Project Time)
Time = $$
High-Resolution Site Characterization (HRSC)
14. HRSC Technology Selection
The Right Tool for the Right Job!
• Understand the Objective
• Differentiate Target from Matrix
• Efficient Use of Field Resources
High-Resolution Site Characterization (HRSC)
15. Return to the Basics
NUS, MLE & MWH
• No Unique Solution
• Multiple Lines of Evidence
• Multiple Working Hypotheses
High-Resolution Site Characterization (HRSC)
16. Data Progression
• Physical Sample Collection & Analysis
• HRSC Data Collection
• Real-Time Decisions
• Physical Sample Collection & Analysis
HRSC Data Management, Modeling, Analysis/Analytics
17. “Traditional” Methodology
30 Borings, 10 Wells, 5 Years
120 Soil & 200 GW Samples = 320 Data Points
COST?
>$100K
cost/datapoint ≥ $315
HRSC Data Density Example
18. DP HRSC Methodology
10 DP Locations to 50 Feet (3 Days)
10 Locations x 20 Samples/Foot x 7 Channels =
>70,000 Data Points
COST?
>$25K
cost/datapoint ≥ $0.35
HRSC Data Density Example
19. HRSC Data Collection
• Data Volume & Management
• Physical Sample Collection
• HRSC Data
• MiHPT (100’s KB per boring)
• OIP (1 GB per boring)
HRSC Data Management, Modeling, Analysis/Analytics
20. HRSC Data Collection
• Analysis (Past to Present)
• Modeling – Volumetrics, Target ID
• Trend Analysis
• QA/QC
• Analytics (Future)
• Modeling – Predictive
• AI, Machine Learning, DL
• Feature Identification
• Model Development
HRSC Data Management, Modeling, Analysis/Analytics
32. OIP-UV
Purpose:
• UV induced fluorescence of NAPL
hydrocarbons in soil.
Method:
• UV light directed at the soil
• Hydrocarbons present fluoresce.
• An Image of the soil is captured.
• Analyzed for fluorescence.
• Visible light images may also be obtained.
33. OIP-G
Purpose:
• Green light induced fluorescence of NAPL
hydrocarbons in soil.
Method:
• Green light directed at the soil
• Hydrocarbons present fluoresce.
• An Image of the soil is captured.
• Analyzed for fluorescence.
• IR light images may also be obtained.
36. Goals:
• Verify Emplacement of Remedial Compounds
• Quantify Additional Effort
DP HRSC Use in Remedial Action & QA/QC
37. Verify Emplacement of Remedial Compounds
• Pre & Post Injection Survey – Transect or Grid
• Changes in Pore Space Characteristics
• Pore Water Chemistry (EC, TDS, etc…)
• Pore Space Permeability
• Tracer/Fracture Delineation
DP HRSC Use in Remedial Action & QA/QC
38. Changes in Pore Space Characteristics
• Pore Water Chemistry (EC, TDS, etc…)
• Pore Space Permeability
• Tracer/Fracture Delineation
DP HRSC Use in Remedial Action & QA/QC
39. Changes in Pore Space Characteristics
• Pore Water Chemistry (EC, TDS, etc…)
• ISCO (e.g. Fenton’s Reagent) EC>>1000 mS/m
DP HRSC Use in Remedial Action & QA/QC