Although some state and federal agencies and other entities have guidance documents regarding soil background, there is not one comprehensive and widely accepted guidance document that summarizes the state of the science on this topic. This ITRC guidance document is intended to fill the gap by providing a comprehensive defensible framework for establishing and using soil background in risk assessments. It focuses on the process of establishing defensible background concentrations of naturally occurring or anthropogenic ambient chemicals to be used for risk assessment at contaminated sites.
#Bioavailability of Contaminants in Soil
#SoilBackgroundandRiskAssessment

2021-04-28

(SRR-1)

Sustainable Resilient Remediation (SRR) is an optimized solution to cleaning up and reusing a hazardous waste site that limits negative environmental impacts, maximizes social and economic benefits, and creates resilience against increasing threats. The objective of this SRR guidance is to provide resources for regulators, stakeholders, consultants and responsible parties to help integrate sustainability and resilience practices into remediation projects.

2021-03-01

(HCB-1)

Cyanobacteria are microscopic, photosynthetic organisms that are found naturally in all aquatic environments. Under certain conditions, cyanobacteria can multiply and become very abundant, discoloring the water throughout a water body or accumulating at the surface; these occurrences are known as blooms. This ITRC guidance discusses key aspects of harmful cyanobacterial blooms management that waterbody managers and other interested parties should consider as they respond to these events.

2020-12-01

(VIM-1)

Technical Resources for Vapor Intrusion Mitigation (VIM) is designed to aid state regulators in understanding various mitigation strategies, how they are installed and fundamentally work, and what factors to consider as part of the review process. This document is intended to guide regulators and project managers through the critical elements of selection, design, implementation, and operation of VIM.

2020-10-27

(ISM-1-Clarifications)

An updated ITRC guidance (ISM-2) was developed and posted in the fall of 2020. The ISM-2 Update Team clarified inappropriate or inconsistent information in ISM-1 is as seen in the attached statement.  Please review this document before downloading the ISM-1 PDF.

2020-10-27

(ISM-2)

This updated Incremental Sampling Methodology (ISM-2) web-based document builds upon the 2012 version (ISM-1) and reflects advancements in technology in the ensuing eight years.  ISM-type investigation methods have evolved, and regulators have gained more experience in the application of ISM in the field and in the laboratory. The original 2009 survey of regulators and industry environmental experts was updated with current information on ISM practices to measure progress and understand what obstacles are still being encountered.

This document is formatted as a website that is not meant to be printed. You can access the web document at any time from the ITRC website or you can bookmark the link. If you would like to print, please enter the document website and then use the "Print" button to print. Some of the web-based documents allow you to print either the entire document or a subsection.

The updated document includes multiple examples of site scenarios for DU designation and the collection of ISM samples under different field conditions. A separate section on the use of ISM investigation methods to support human health and ecological risk assessments has been added and the simulations in the original appendices have been updated and include a recent study on Student t and Chebyshev discussion of UCL. Current case studies are summarized to provide insight into the potential applications, benefits, and challenges of the approach from recent sites.

2020-07-28

(IDSS-2)

This updated web-based document offers an interactive learning experience, containing embedded links to supplementary documents and resources designed to help develop an effective, integrated strategy to manage remediation of sites contaminated with chlorinated solvents.

2020-06-01

(RCT-1)

This document includes a brief overview of risk communication, walks through the steps in developing a communication plan and stakeholder outreach activities, presents an overview of risk communication concepts, applies these principles in case studies, and includes various tools to facilitate risk communication plan development. The Additional Information section includes various tools to facilitate risk communication plan development and stakeholder outreach activities. This toolkit is applicable to current, immediate, and emerging environmental issues and concerns. Tools are generally applicable to environmental issues and concerns. This toolkit will be updated with links to case studies published by future ITRC teams.

2020-04-02

(14DX-1)

ITRC has developed a resources to summarize the latest science and emerging technologies for 1,4-Dioxane.

2020-02-01

(OIS-ISRP-1)

Comprehensive guidance on common in situ remediation challenges, including remedial design, implementation, and monitoring.