Solutions for Complex Sites - Alabama · •Profile Methods . HPT Permeability Testing . Average...

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

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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

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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