Region 4 Triad Sites

Several sites within the Southeast have used or are currently using the Triad approach to site cleanup. Links are provided to the national Triad site map and site profiles for each Triad site in Region 4.

Systematic Planning
Real-Time Measurements
Dynamic Work Strategies

Ross Metals Site, Rossville, TN

Complete characterization of lead in soil in a single mobilization
Excavation of lead-contaminated soil completed in real-time guided by field analytical results
Completion of a methods applicability study designed to assess variability associated with sample preparation methods
Development and application of field-based action levels using x-ray fluorescence (XRF)
Collaborative use of field-based methods and fixed laboratory methods to manage sampling and analytical uncertainty
Collaborative use of field-based methods and decision support tools to limit decision and overall project uncertainty
Expedited Characterization and Excavation of Lead in Soil Using X-Ray Fluorescence (XRF), Ross Metals Site, Rossville, TN
More Region 4 Site Information

Callaway Drum Recycling Site, Auburndale, Florida

Systematic planning used detailed information from a sister facility to fill in operational history data gaps and select compound-specific, real-time measurement technologies
A dynamic field investigation located and determined the magnitude of multiple source areas containing chlorinated solvents and petroleum compounds in soil and groundwater in a single mobilization
Field-based methods and fixed laboratory methods were used collaboratively to manage sampling and analytical uncertainty, increasing sample coverage at the Site without significantly increasing costs
Dynamic Work Strategy Using a Total Vapor Analyzer and Colorimetric Methods for Detection of Chlorinated Solvents and Petroleum Constituents at the Callaway Drum Recycling Site, Auburndale, Florida

Avon Park Air Force Range, Florida

Use of microextraction techniques to allow rapid and cost effective analysis of PAHs.
Collaborative use of microextraction analysis, field kits and fixed laboratory data to manage sampling and analytical uncertainty.
Increased data density allowed regulatory team members make more confident decisions regarding the level of characterization at each site.
Use of Fast Turnaround Laboratory Analysis and Field Test Kits to Delineate a Broad Range of Contaminants in Soil and Groundwater at Four Sites in a Single Mobilization, Avon Park Air Force Range, Florida

MacDill Air Force Base Area of Concern 82, Florida

Microextraction techniques allowed rapid and cost effective analysis of chlordane and other pesticides.
Increased data density allowed regulatory team members to make more confident decisions regarding the level of characterization.
The Triad-based approach allowed MacDill Air Force Base (MAFB) to proceed from project planning to the development of a site remedy in 6 months.
The Triad-based investigation leveraged a partnership and social capital already established between MAFB and the regulators.
Use of a Microextraction Gas Chromatography Method to Delineate Chlordane in Soil at MacDill Air Force Base Area of Concern 82, Florida

Seymour Johnson Air Force Base, Goldsboro, North Carolina

This project demonstrated that significant cost savings can be achieved even at a project that is small in scope using the Triad approach ($9,000 total remedial action cost).
Removal of jet-fuel contaminated soils was directed using real-time field measurement of soil headspace. The Conceptual Site Model was simultaneously refined, and the location for in situ treatment of groundwater was adjusted during the same field program to address previously unknown areas of impact.
Use of a Hand-held Vapor Monitor to Guide Soil Excavation and Groundwater Treatment at a Site Contaminated with Jet Fuel (Area of Concern 33), Seymour Johnson Air Force Base, Goldsboro, North Carolina