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Solutions for Complex Sites
Brad Carlson Cascade Technical Services
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The Main Idea
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Moving On From Monitoring Wells
• Monitoring Wells (MWs) yield depth-integrated, flow-weighted averaged data, with no vertical distribution of contaminants in the screened interval.
• Monitoring wells are holes in the ground that can lie. • MWs and 5 foot soil cores do not define the small
scale heterogeneities controlling contaminant transport.
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Real-Time Measurement Systems
The High Resolution Tools for Site Characterization
Real-Time Decision Making and Information Sharing
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HRSC System Setup
Three components:
• -DPT/Probe rig
• -Tool String
• -Data collection equipment
Setup is similar to all real time measurement systems…
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Electrical Conductivity EC Probe
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The (MIP) Membrane Interface Probe System
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The (MIP) Membrane Interface Probe System
•Screening Tool with semi-quantitative capabilities •Lab grade Detectors
• PID (BTEX) • ECD (CVOC’s) • XSD (CVOC’s) • FID
•Standard Practice ASTM Method D7352-07
FID
PID
ECD
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Example MIP Log
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Leogane,Haiti
Permeability ?
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•Point Methods
•Profile Methods
HPT Permeability Testing
Average Data CPT SLUG
Specific Data HPT Waterloo APS
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HPT Permeability Testing
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HPT - Average Path versus Actual Path
Permeability Average
Point Method
Permeability Actual
Profile Methods
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• Advance probe at constant rate
• Inject water at low flow rate
• Measure formation pressure response
2 cm/sec
The Hydraulic Profiling Tool (HPT) System
16 EC HPT Press Flow Corr HPT
Pressure Est K Abs Hydro
Pressure
Depth to GW
HPT Log
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Dissipation – Static Water Level
8.08ft
8.02ft
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MiHPT – “Your Can Run But You Can’t Hide”
• Providing the Whole Picture – Lithology: Electrical Conductivity
(EC) – VOC Mass: Membrane Interface
Probe (MIP) – Hydraulic Conductivity: Hydraulic
Profiling Tool (HPT) • 3 Tools – One Boring
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MiHPT LOG
Storage
Transport
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Cone Penetrometer Testing - CPT
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CPT log
Sleeve Friction
Tip Pressure Lithology
Description
Friction Ratio
Pore Pressure
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The UVOST System Ultraviolet Optical Screening Tool
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Potential LIF Characterization Sites
• Leaking Underground Storage Tanks
• Pipelines
• Refineries
• Fueling Areas
• Automobile Service Locations
• Lagoons and Waste Ponds
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NAPL concentration
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The UVOST/LIF System
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Fortunately all PAH non-aqueous phase liquids or NAPLs Fluoresce
short UV
long UV
kero
sene
ga
solin
e di
esel
oi
l
PAH fluorescence is a way to detect them by their “glow”
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Example of Fluorescence
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Each Aliphatic Solvent yield a fairly unique wavelength/time matrix (WTM)
Diesel
Jet
Motor O
il
Gas
Laser Induced Fluorescence (LIF) Concepts
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UVOST/LIF Logs
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HRSC High Resolution Site Characterization
State-of-the art analysis and visualization. Targeted Injection Plans
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Evolution of HRSC 3D Imaged Source Area – PID > 1 x 106 microvolts
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MVS – HRSC Integration • Conceptual
Site Model (CSM) development Well Screen Zones
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HRSC Injection Planning
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The Main Idea
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Questions