Resources

HRSC technical resources

A curated collection of 14 technical resources for high-resolution site characterization — organized by probe technology and topic. Every link goes directly to HRSC-specific content from EPA, ITRC, CLU-IN, and tool manufacturers.

HRSC Guidance

Authoritative guidance on high-resolution site characterization from EPA and ITRC — what it is, how it works, and why it matters.

EPA — High Resolution Site Characterization at Petroleum UST Release Sites (2023)

Comprehensive EPA study demonstrating HRSC saves 9–19% in project costs and reduces remediation timelines by 3.3 years at UST sites.

EPApdf

CLU-IN — What is High-Resolution Site Characterization?

EPA CLU-IN overview of HRSC concepts — scale-appropriate data density, real-time measurement, direct sensing technologies, and how they fit into the Triad approach.

CLU-IN / EPAweb

ITRC — Implementing Advanced Site Characterization Tools (ASCT)

ITRC guidance on selecting and deploying HRSC tools — covers direct push sensors, data management, and real-time decision-making frameworks.

ITRCweb

Geoprobe — Direct Image® Technology Overview

Hub page for all Geoprobe Direct Image probe technologies including OIP, MIP, HPT, EC, and combined tool strings (OIHPT, MIHPT).

Geoprobeweb

Membrane Interface Probe (MIP)

The MIP detects volatile organic compounds in real time using three laboratory-grade detectors — PID, FID, and XSD — for multi-parameter VOC screening downhole.

Geoprobe — Membrane Interface Probe (MIP)

Product page for the MIP system — PID, FID, and XSD detectors for real-time VOC screening at contaminated sites.

Geoprobeweb

Geoprobe — MIP Standard Operating Procedure (SOP)

Official Geoprobe SOP for MIP field operations — system calibration, deployment procedures, and quality control protocols.

Geoprobepdf

Optical Image Profiler (OIP)

The OIP uses LED-induced fluorescence and a downhole camera to detect and image NAPL in situ. Available in UV, green-light (OIP-G), and expanded UV range (OIP-UVR) variants.

Geoprobe — Optical Image Profiler (OIP)

Product page for the OIP system — UV and green-light fluorescence camera for in-situ NAPL detection with real-time downhole imaging.

Geoprobeweb

OIP-G Successfully Detects Coal Tar Fluorescence

Field application of the 520 nm green-light OIP-G system for detecting heavy NAPL compounds like creosote and coal tar that standard UV misses.

Geoprobeweb

Expanded UV Range Creates NAPL Detection Confidence (OIP-UVR)

Field application of the OIP-UVR variant — expanded ultraviolet detection range for lighter-end petroleum NAPLs including jet fuels (JP-4, JP-8, Jet-A).

Geoprobeweb

Hydraulic Profiling & Lithology

The HPT measures formation permeability in real time, while the EC dipole array logs lithology. Both are integrated into OIHPT and MIHPT combined tool strings.

Geoprobe — Hydraulic Profiling Tool (HPT)

Product page for the HPT system — continuous measurement of relative formation permeability and water table estimation during direct push advancement.

Geoprobeweb

Geoprobe — Electrical Conductivity (EC)

Product page for the EC dipole array sensor — continuous lithology logging that distinguishes clay, silt, sand, and gravel in real time.

Geoprobeweb

Geoprobe — Groundwater Profiler

Depth-discrete groundwater sampling tool for collecting representative samples at specific intervals without permanent well installation.

Geoprobeweb

HRSC Data Software

Software tools used to process, visualize, and model HRSC probe data — from field log viewing to 3D contamination modeling.

C Tech — Earth Volumetric Studio (EVS)

Industry-leading 3D environmental visualization software for building contamination models, cross-sections, and depth-slice maps from HRSC probe data.

C Tech Development Corporationweb

Geoprobe — Direct Image Viewer Software

Geoprobe's field log viewing software for Direct Image data — view, process, and export OIP, MIP, HPT, and EC sensor logs.

Geoprobeweb

Have questions about HRSC?

Our team can help you understand which probe configuration is right for your site conditions and contaminants of concern.