Authors: Victor Medina & Mike Eberle | Décembre 21, 2022

Summary

Many users of Legacy C-8 Aqueous Film Forming Foams (AFFF) are considering changing to foams to minimize release of PFOA, PFOS and 8:2 FTS. Modern C-6 AFFF and fluorine free foams (FFF) are replacement options. FFF is preferable from an environmental perspective, but current FFF formulations are inferior in firefighting characteristics to legacy C-8 AFFF and modern C-6 AFFF. In replacing the legacy C-8 foam, equipment decontamination is recommended. The process should be carefully planned and PFAS contaminated residuals properly managed.

Background

Legacy (AFFF) used for firefighting are a significant source of poly-, perfluoroalkyl substances (PFAS) in the environment. Key PFAS from these foams are discussed below:

  • Perfluorooctanoic acid (PFOA) and Perfluorooctanesulfonic acid (PFOS), which are long-chain C8 PFAS, have been the initial focus of regulatory criteria setting and some states have enforceable drinking water standards ranging from 8 to 70 nanograms per liter (ng/L). In 2022, the U.S. Environmental Protection Agency (EPA) issued lifetime drinking water health advisories of 0.0004 and 0.020 ng/L for PFOA & PFOS, respectively, and the EPA is expected to propose enforceable maximum contaminant levels (MCLs) for PFOA and PFOS in the near future.
  • 8:2-fluorotelomer sulfonate (8:2 FTS) is another long-chain C-8 PFAS that is currently not regulated in drinking water but readily transforms into PFOA.

AFFF is applied to fires via firefighting equipment. This includes fire extinguishers, firefighting vehicles and fixed systems (e.g., foam gun systems used to contain fires around tanks and fuel storage areas and foam dispersing systems). AFFF concentrate is placed in these devices and foam is generated by mixing the concentrate with water/air under pressure using specialized nozzles.

With current and expected regulation, many entities are exploring the process to replace their legacy AFFF (C-8) with other short-chain AFFF (C-6 fluorotelomer sulfonates) or fluorine free foams (FFF). This requires removal of the legacy AFFF and decontamination of the firefighting equipment. Cost analyses indicate that it is generally much less expensive to decontaminate firefighting equipment than it is to replace it. However, some replacement foams may differ in density/viscosity, which may require replacement of pumps, valves and/or nozzles, which would increase the decontamination costs. Very small systems and fire extinguishers would likely be less expensive to simply replace.

TRC reviewed processes and data from industrial decontamination efforts and papers/reports and studied research conducted by the Department of Defense Strategic Environmental Research & Development Program/Environmental Security Technology Certification Program (SERDP/ESTCP) to develop recommendations.

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Legacy AFFF Properties

Properties of legacy AFFF that make it very effective for fire suppression include:

  • The ability of the AFFF to form a thin, but stable, film on the water interface that smothers the fire. This film also prevents reignition
  • Viscosity and density similar to water, allowing for easy pumping and dispersal

Replacement Foams

There are two options available to replace legacy AFFF concentrate. (1) Modern Fluorotelomer AFFF, also called C-6 foam, uses short-chain fluorotelomer sulfonates and (2) Fluorine Free Foams (FFF) that use a variety of fluorine free organic surfactants. The table below compares these replacement options and legacy AFFF.

Replacement Foams Versus Legacy AFFF
Characteristics C-8 Legacy AFF Modern C- 6 AFFF FFF
Environmental Concerns High environmental concerns. Contains PFOA/PFOS or compounds that may transform to these compounds. Uncertain environmental concern. Does not contain or transform to PFOS/PFOA. Can transform to perfluoroheptanoic acid (PFHpA) that is regulated in several states. Very little environmental concern associated with PFAS but foam contains higher concentrations of hydrocarbon surfactants that could pose a risk if released to surface water. Overall concerns much lower than C-8 Legacy or C-6 AFFF.
Effectiveness of Suppressing Fuel/ Chemical Fires Excellent Comparable to C-8 Legacy AFFF Inferior to C-8/C-6 foams
Ability of Foams to Prevent Fire Reignition Excellent Comparable to C-8 Legacy AFFF Inferior to C-8/C-6 foams
Compatibility of Foams with Existing Firefighting Equipment Fully Compatible Highly compatible. Similar density and viscosity to C-8 Legacy AFFF

Low compatibility. Most have high viscosity and greater density. Existing pumps, valves and nozzles may need to be replaced.

 

From an environmental perspective, FFFs are preferential because of the uncertainty of the toxic characteristics of shorter chain C-6 PFAS compounds. In terms of fire suppression, modern C-6 fluorotelomer AFFF performs comparably to that of the C-8 legacy foams. FFFs may have utility for sites with isolated chemical fire hazards where longer extinguishing times are acceptable. However, most chemical fires will require replacement foams with extinguishing characteristics that C-6 fluorotelomer foams exhibit. There is substantial investment into the development of FFF, so it is possible that improved products will be available in the future. When switching foams, check for compatibility to existing pumps, valves and nozzles.

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Foam Removal and Decontamination

Foam removal and decontamination should be carefully planned. This includes estimating waste volumes (AFFF concentrate, flushes and rinsates), worker protection, sufficient storage capacity for residuals, leak minimization processes and eventual management and disposal of collected residuals.

The first step for replacement is removal of the legacy foam from the equipment. The foam can be removed via drains at low points in the system, and the removal should be carefully managed to minimize accidental releases.

There are currently no existing requirements for the decontamination of firefighting equipment at the federal level. TRC recommends that decontamination be conducted because residual C-8 foam in the system could result in mixing with the replacement foam and the subsequent release of C-8 PFAS to the environment when the new foam is applied. After draining the entire system of AFFF concentrate:

  • Conduct a foam flush, which is a rinse, or series of rinses, until foaming is no longer found in the rinsate.
  • Remove and replace disposable elements like bladders and hoses.
  • Consider conducting detailed, focused cleaning of valves, elbows, flanges and other elements that may be resistant to the flushing process or removing and replacing these.
  • Conduct triple or quadruple rinse to remove the majority of legacy PFAS contaminants. Each rinse should recirculate from 45 minutes to 1 hour before discharging and collecting.
  • The foam flush and rinsate water could be treated onsite to reduce the volume needed for disposal. Potential treatments include granular activated carbon (GAC), ion exchange (IX) or foam fractionation (FF).
  • Take care to minimize any leaks or accidental releases of the foam flush/rinsate. Collected rinsates should be stored with secondary containment prior to treatment or disposal.
  • Laboratory analysis of the final rinsate is an option, but is often not practical because of the need to return the firefighting equipment to service. Further, there are no established standards or advisories to meet.
  • Contaminated residuals (AFFF concentrate, rinsates, spent treatment media, etc.) should be managed appropriately.

Studies have shown that legacy PFAS can partition on surfaces in the firefighting equipment, including stainless steel materials. These can be released over time, causing “rebound.” If this is a concern, consider the following:

  • Commercially available additives can be used to improve the AFFF decontamination.
  • Solvents like methanol/ethanol or non-foaming surfactants could also be used to enhance decontamination efficiencies, although added solvents must be considered in the evaluation of disposal options.
  • For legacy C-8-based foams, heated water can be used to improve the mass transfer from the surfaces to the rinsate water.

Flushing Process Options

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Disposal of Residuals

Responsible disposal of the residuals should be conducted. As part of the planning process, discussed in the Foam Removal and Decontamination section, volumes of residuals should be estimated as part of the planning process and these estimates can be used to estimate disposal costs. Approaches for residuals management include incineration and landfilling with onsite methods under development. TRC can assist with making appropriate selections.

How Can TRC help?

If changeout of C-8 foam is desired, then TRC can assist in recommending a suitable foam replacement and develop plans for foam removal and equipment decontamination. TRC can assist in finding a quality contractor to conduct the foam removal and equipment decontamination and can develop plans to manage residuals from legacy foam removal and equipment decontamination. Contact our experts below to learn more.

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Les biphényles polychlorés (BPC) sont des produits chimiques organiques synthétiques composés d’atomes de carbone, d’hydrogène et de chlore sur le cycle biphényle.

GettyImages-635974362
Nouvelles

TRC fait l’acquisition de Paustenbach & Associates, un chef de file en toxicologie, en science de l’exposition et en évaluation des risques

août 27, 2024

Paustenbach & Associates élargira les capacités de TRC dans les domaines de l’évaluation des risques pour la santé et du soutien aux litiges.

01-how-to-reduce-the-risk-of-pfas-exposure
Aperçus

How to Reduce the Risk of PFAS Exposure

août 3, 2024

Per- and polyfluoroalkyl substances (PFAS) consist of nearly 3,000 different chemicals. The various chemicals can adversely affect human health and the environment.

image-271111
Ressources

Gestion de la prolifération d’algues nuisibles (HAB)

août 2, 2024

Renseignez-vous sur les répercussions des proliférations d’algues nuisibles et sur les déclencheurs réglementaires connexes pour la déclaration, l’orientation et l’action.

GettyImages-537115811-min
Livres blancs/rapports

Traitement des SPFA pour permettre l’utilisation bénéfique des sédiments dragués touchés

juillet 18, 2024

Environ 200 à 300 millions de verges cubes de sédiments sont draguées chaque année par le US Army Corps of Engineers (USACE) et d’autres intérêts fédéraux (USEPA, 2007).

GettyImages-1164931989
Mises à jour réglementaires

À venir à vous rapidement – Les dernières nouvelles sur rcra et PFAS Règlements

mars 1, 2024

L’EPA a publié son projet de règle pour l’inscription de SPFA spécifiques en tant que constituants dangereux en vertu de la Loi sur la conservation et la récupération des ressources (RCRA).

Maysville_ribbon_cutting-original
Nouvelles

TRC aide une petite ville à rétablir l’approvisionnement en eau potable

février 13, 2024

Maysville s’est tourné vers TRC, une société mondiale de conseil, d’ingénierie et de gestion de la construction de premier plan, pour obtenir de l’aide.

01-the-effects-of-pfas-on-human-health-upscaled
Aperçus

Les effets des SPFA sur la santé humaine

février 1, 2024

Il est essentiel de comprendre ce que les SPFA font au corps, car elles peuvent nuire à la santé humaine. Apprenez-en plus sur les effets des SPFA sur la santé avec les sociétés TRC dès aujourd’hui.

Chimneys_smoke
Aperçus

Défis associés au transport atmosphérique des SPFA

janvier 12, 2024

La présence de SPFA dans l’air pose de multiples défis en ce qui concerne l’identification des sources, les méthodes d’analyse et la façon de gérer les émissions atmosphériques en tant que préoccupation potentielle pour la santé.

EPA-Rule-Impacts-PFAS-TRI-Reporting
Mises à jour réglementaires

La nouvelle règle de l’EPA a une incidence sur la déclaration des PFAS TRI et les notifications aux fournisseurs

novembre 20, 2023

Ce que les installations touchées doivent savoir au sujet de l’applicabilité, des changements apportés aux rapports et des échéances

Paper_Factory-157182023-scaled-1
Aperçus

L’importance des SPFA dans l’atmosphère

novembre 13, 2023

Comprendre les préoccupations et se préparer aux problèmes potentiels

data-validation-versus-data-usability-assessments
Aperçus

Validation des données par rapport aux évaluations de la convivialité des données

octobre 19, 2023

La collecte de données environnementales est un processus qui comprend diverses étapes et phases

30192ab4-natural_gas-958847718
Mises à jour réglementaires

EPA Proposes Changes to Air Emissions Reporting Requirements (AERR)

août 30, 2023

The EPA is proposing updates to their Air Emissions Reporting Requirements (AERR) through amendments to 40 CFR Parts 2 and 51.

9652d347-01-how-does-pfas-contamination-impact-the-environment
Aperçus

How Does PFAS Contamination Impact the Environment?

août 11, 2023

PFAS are widely used in the production of numerous products. Some PFAS chemicals are the by-product of manufacturing processes. As a result, PFAS contamination is widespread, with PFAS being found nearly everywhere in the world.

c408d779-01-keeping-up-with-pfas-regulatory-updates
Ressources

Keeping Up With PFAS Regulatory Updates

août 1, 2023

Since the early 2000s, the United States Environmental Protection Agency (EPA) has implemented regulations to reduce PFAS exposure and protect public health.

db903ba8-risk-management-1440x1328-1
Ressources

Identifying EHS Risks and Providing Solutions During Due Diligence

juillet 28, 2023

Due diligence is a comprehensive and systematic investigation or research process conducted to assess the merits, risks and potential of a business opportunity or investment.

602366d6-coal-fired-power-plant-smoke-stacks-platte-river-casper-wyoming-wind-turbines-821028416-1440x960-1
Ressources

Air Quality Services

juillet 28, 2023

TRC is a leader in providing comprehensive air services to help clients achieve compliance and sustainability goals.

GettyImages-1468482800
Ressources

PFAS Reporting Requirements

juillet 25, 2023

PFAS are found in consumer products worldwide, including nonstick cookware, firefighting foams, cosmetics, personal care products and cleaning solutions.

7bc65fae-bridge-girder-steel-framework-172201793
Aperçus

Understanding Microplastics in Sediments

juillet 21, 2023

The accumulation of plastic pollution in the environment has rapidly increased in recent decades. Microplastics (MP) are very small pieces of plastic that come from a variety of sources.

plastic-trash-on-blue-background
Aperçus

California Advances Plastic Packaging Law

juillet 7, 2023

As rulemaking deadlines and compliance timeframes approach, how will your organization be impacted?

1587587f-airport-919763570
Livres blancs/rapports

Helping Airports Identify and Mitigate PFAS Risks

mai 30, 2023

This white paper focuses on some unique strategies and situations we have encountered at some airport sites.

82267620-pfas-webinar-graphic-1-1440x958-1
Ressources

PFAS Regulatory Landscape

mai 3, 2023

This presentation describes PFAS regulations across the U.S., EPA Health Advisories and Regional Screening Levels (RSLs) and various Federal Laws that regulate PFAS in some form.

a6136fa8-gettyimages-1138436992
Mises à jour réglementaires

EPA Finds Trichloroethylene Presents Unreasonable Risk in Final Risk Evaluation

avril 6, 2023

On Jan 9, 2023, the United States Environmental Protection Agency (EPA) revised the Toxic Substance Control Act (TSCA) to reflect a new risk determination for trichloroethylene (TCE).

088350fb-man-filling-a-glass-of-filtered-water-right-from-the-tap-in-the-kitchen-1368715188-1
Aperçus

Utilisation proposée d’un indice de danger pour le Règlement national sur l’eau potable primaire (NPDWR) sur les SPFA

avril 4, 2023

La LCM et la MCLG proposées pour les quatre SPFA, LE PFNA, le PFHxS, le GenX et le PFBS considèrent leur toxicité comme additif. L’EPA a proposé un IH de 1,0 en tant que MCL et MCLG pour les quatre SPFA combinés.

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Ressources

PFAS Groundwater Sampling

mars 28, 2023

Per- and Poly-fluoroalkyl substances are a diverse group of man-made chemicals and are becoming an increasing environmental concern.

dc763c72-trc-epa-perchlorate-limits-drinking-water
Mises à jour réglementaires

Proposed MCLGs and MCLs for PFAS

mars 15, 2023

Final Regulatory Determination for Contaminants on the Fourth Drinking Water Contaminant Candidate List

48ecc693-laboratory-safety-1440x810-1

QA and Chemistry Services

février 23, 2023

TRC offers many QA and Chemistry services including data usability assessments, limited and full data validation reports, quality assurance project plan preparation, selection of appropriate analytical methodologies and laboratory audits.

2298c6c7-water-drains-through-pipes-1254342538-1440x925-1

PFAS Fate and Transport

février 23, 2023

Understanding PFAS properties and behavior is key to effective detection and remediation.

c3965908-stream-flowing-through-forest-1021703630-1440x960-1
Ressources

PFAS Fate and Transport: Conceptual Site Models

février 23, 2023

The conceptual site model describes site-specific sources, release and transport mechanisms, exposure media, exposure points, exposure pathways and routes and potential human and/or ecological receptor populations.

d7d3306b-firefighter-148304859-1440x960-1
Ressources

PFAS: Data Collection and Analysis Part 2

février 23, 2023

There are many PFAS-related challenges, such as changing regulations, toxicology, fate and transport, analytical methods, remediation, public perception and more.

6a7dcb76-pfaswebinar-1440x960-1
Ressources

PFAS: Sampling and Analysis Part 1

février 23, 2023

Sampling and analysis of Per- and poly-fluoroalkyl substances (PFAS) requires specific techniques and analytical tools to ensure data quality.

78285eb8-trc-maysville-epa
Mises à jour réglementaires

EPA Announces $2 Billion in Funding to Address Emerging Contaminants in Drinking Water

février 14, 2023

Environmental Protection Agency Administrator Michael Regan announced $2 Billion in infrastructure funding to help the nation’s rural water supplies.

Sluice Gate Water Canal
Mises à jour réglementaires

EPA Publishes Effluent Guidelines Program Plan 15

février 14, 2023

The EPA announced updated effluent limitations guidelines under Plan 15, focusing on the evaluation and rulemaking process for per- and polyfluoroalkyl substances (PFAS) discharges.

c76f9026-trc-wisconsin-pfas-regulations
Ressources

PFAS: Remedial Approaches

février 8, 2023

Remediating Per- and poly-fluoroalkyl substances (PFAS) from the soil and water requires effective techniques and innovative technologies. TRC’s experts are well versed in several remediation strategies intended to remove PFAS and prevent re-exposure.

eadbdd0b-detail-of-white-smoke-polluted-sky-167231386-1440x960-1
Ressources

PFAS in Air: The Basics

février 8, 2023

Per- and poly-fluoroalkyl substances (PFAS) are a group of synthetic chemicals resistant to heat, water and oil. PFAS are widely detected in air as well as water and soil.

hands of business person working on computer
Mises à jour réglementaires

TRI PFAS Reporting Requirements Continue to Expand

janvier 25, 2023

The list of PFAS for TRI reporting has increased to a total of 189 for reporting year 2023.

9dd39045-hands-with-microplastics-on-the-beach-1150805328-1440x910-2
Ressources

Emerging Contaminants- Microplastics, HABs and Cannabis

janvier 9, 2023

Microplastics, harmful algal blooms (HABs) and cannabis/hemp can present health and safety concerns.

37306316-gettyimages-1169840024-1440x960-1
Ressources

Chlorinated Solvents 101

janvier 9, 2023

Chlorinated solvents are present in industrial chemicals and can post risks to the environment and human health.

244a0020-river-dam-535457994
Aperçus

PFAS on the Move: Fate and Transport in Sediment

janvier 3, 2023

PFAS tend to sorb to sediment particles and organic matter, which settle at the bottom of a waterbody, creating a reservoir of PFAS that can cycle in the environment for decades.

78179437-fire-truck-182819377-e1671572308266
Aperçus

Equipment Decontamination and Replacement of Legacy Aqueous Film Forming Foams

Décembre 21, 2022

Legacy AFFF used for firefighting are a significant source of PFAS in the environment. With current and expected regulation, many entities are looking for replacements.

Run-off pipes discharging water
Mises à jour réglementaires

PFAS Discharges in NPDES Permits

Décembre 19, 2022

In a follow-up to the EPA Office of Water’s April 28, 2022 memo, EPA released “Part 2″, providing guidance for the NPDES permitting/pretreatment program as it relates to restricting discharges of PFAS to water bodies.

230b3427-fill-the-airplane-with-fire-fighting-foam-613905646-1440x960-1
Ressources

PFAS: The Basics

Décembre 14, 2022

Per- and poly-fluoroalkyl substances (PFAS) are a group of synthetic chemicals resistant to heat, water and oil. These persistent chemicals have been found to be ubiquitous toxins in our environment.

7f19ecbc-abstract-pattern-of-aged-pvc-pipe-with-sun-lights-836200296-1440x858-1
Ressources

Petroleum Hydrocarbons 101

Décembre 14, 2022

This presentation defines petroleum hydrocarbons and covers the range of products and constituents that comprise petroleum hydrocarbons.

aerial-view-oil-refinery
Ressources

Advanced NAPL Site Characterization Tools

Décembre 14, 2022

Advanced NAPL site characterization tools can improve site understanding and remediation performance.

041c4e0b-hazardous-materials-and-waste-1440x960-1
Ressources

What is TSCA and Why Should I Care?

Décembre 1, 2022

This presentation provides a historical background on TSCA, regulatory requirements, regulated industries and regulated substances.

seattle-wa
Mises à jour réglementaires

Washington State Establishes PFAS Cleanup Levels

septembre 21, 2022

The Washington State Department of Ecology (Ecology) recently published a list of 6 PFAS compounds that now have soil and groundwater cleanup levels

gettyimages
Mises à jour réglementaires

New National Emerging Contaminants Research Initiative

septembre 12, 2022

The Executive Office of the President of the United States announced a National Emerging Contaminant Research Initiative

dd616e09-epa-strategic-plan-blog-e1655220362970
Mises à jour réglementaires

EPA Issues Proposed Rule Designating PFOA and PFOS as Hazardous Substances

septembre 7, 2022

The EPA has issued a pre-publication version of a proposed rule to designate two PFAS compounds as hazardous substances under CERCLA.

414c44a5-stacks2
Ressources

EPA PFAS Strategic Roadmap: Where Are We?

août 3, 2022

In 2021, the United States Environmental Protection Agency (EPA) announced the Agency’s PFAS Strategic Roadmap.

e81273b4-pfas-forensics-2
Aperçus

PFAS Forensics – Identify the Source of PFAS

juillet 8, 2022

Forensics and source identification is necessary to detect the unique PFAS chemical signatures

columbia-river-gorge
Mises à jour réglementaires

Five New PFAS Added to EPA Regional Screening Levels (RSLs)

juin 24, 2022

EPA announced the addition of five new PFAS to the list of Regional Screening Levels (RSLs)

environmental-protectioin-agency-epa-washington-dc
Mises à jour réglementaires

EPA Announces Updated Drinking Water Health Advisories for Four PFAS Chemicals: PFOS, PFOA, PFBS, & GenX

juin 24, 2022

On June 15, 2022, the EPA released updated Health Advisory Levels for four per- and polyfluoroalkyl substances (PFAS) in drinking water

04d8ea53-wastewater_photo
Aperçus

Integrating Sustainability, Digital Connectivity and Design Optimization in Wastewater Treatment Systems

juin 20, 2022

Some organizations rarely think about water and wastewater treatment, until there is a problem. American industry depends on the ability to treat wastewater discharges while complying with regulatory standards and addressing emerging contaminants. If wastewater treatment fails, our environment is negatively impacted, and companies are exposed to shutdowns, delays and fines.

GettyImages-528582638-1
Vidéos

Webinar Reply: Minnesota’s PFAS Monitoring Plan

juin 13, 2022

Minnesota’s PFAS Monitoring Plan: Other Test Method (OTM) 45 for Measuring PFAS Air Emissions

industrial-engineers-inspecting-fuel-tank
Mises à jour réglementaires

Worst Case Discharges of Hazardous Substances – Proposed Rule

mai 25, 2022

In compliance with the Clean Water Act (CWA), the U.S. Environmental Protection Agency (EPA) recently proposed a new rule for onshore non-transportation-related facilities requiring specified facilities to plan for worst case discharges (WCDs) of CWA hazardous substances that could cause substantial harm to the environment.

water-drains-through-pipes
Mises à jour réglementaires

PFAS Discharges and NPDES Permits

mai 25, 2022

On April 28, 2022, the U.S. Environmental Protection Agency’s (EPA) Office of Water released a memo addressing the use of National Pollutant Discharge Elimination System (NPDES) permits to restrict per- and poly-fluoroalkyl substances (PFAS) discharges to water bodies.

fraser-river-british-columbia
Mises à jour réglementaires

EPA Proposes Aquatic Life Criteria for PFOA and PFOS

mai 25, 2022

On May 3, 2022, under the Clean Water Act (CWA), the United States Environmental Protection Agency (USEPA) proposed the first aquatic life criteria for both short-term and long-term toxic effects from Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS).

ehs-digital-technology
Mises à jour réglementaires

SEC Releases New Proposed Rules Requiring Public Companies to Disclose Climate Risks

avril 12, 2022

On March 21, 2022, the U.S. Securities and Exchange Commission (SEC) issued its proposed rules for The Enhancement and Standardization of Climate-Related Disclosures for Investors which would require public companies in the U.S. to disclose information in their annual financial reports.

c7217b33-gettyimages-656586730
Aperçus

Per‐ and Polyfluoroalkyl Substances in Environmental Sampling Products: Fact or Fiction?

mars 29, 2022

Can per‐ and polyfluoroalkyl substances (PFAS) be transferred from the common field and other commercial products during sampling?

99d56c01-microsoftteams-image-64
Aperçus

Evaluation of the Effects of PFAS Soil Adsorption and Transformation

mars 29, 2022

A study to to evaluate the effect of divalent cations on the adsorption of per- and polyfluoroalkyl substances (PFAS) onto soil particles.

c76c5552-business-people-meeting-conference-seminar-concept-507180820
Aperçus

PFAS Experts Symposium 2: An Update on Advances in Chemical Analysis of PFAS

mars 23, 2022

A recap of how the analysis of per‐ and polyfluoroalkyl substances (PFAS) has evolved since the first PFAS Experts Symposium in 2019.

fbb49cc4-business-people-listening-to-the-public-speaker-1131145949
Aperçus

PFAS Experts Symposium: Regulations and Technologies

mars 23, 2022

The scientific, engineering, regulatory, and legal communities assembled for the PFAS Experts Symposium in Arlington, Virginia to discuss issues related to per‐ and polyfluoroalkyl substances (PFAS).

Gloved hand holding glass beaker full of water.
Aperçus

Draft Environmental Protection Agency (EPA) Method 1633: A Data User’s Perspective

mars 15, 2022

A review of Draft EPA Method 1633, Analysis of Per‐and Polyfluoroalkyl Substances (PFAS) in Aqueous, Solid, Biosolids, and Tissue Samples by LC‐MS/MS

glass-chemical-containers
Mises à jour réglementaires

PFOA & PFOS As CERCLA Hazardous Substances: What Does This Mean and How Can You Be Prepared?

février 17, 2022

A plan to designate two per- and polyfluoroalkyl substances (PFAS) as “hazardous substances” under CERCLA was recently submitted by the EPA.

esa-standard
Mises à jour réglementaires

New Phase I ESA Standard Will Affect Environmental Due Diligence

janvier 25, 2022

After years of review, revisions and discussions, the new ASTM E1527 Phase I Environmental Site Assessment (Phase I ESA) standard has been published. The new standard includes updates to definitions, clarifications on processes and requirements, and guidance for emerging contaminants.

epa-perchlorate-limits-drinking-water
Mises à jour réglementaires

Fifth Unregulated Contaminant Monitoring Rule Lists 29 PFAS

janvier 21, 2022

EPA published fifth Unregulated Contaminant Monitoring Rule as required every five years and 29 of the 30 contaminants listed are PFAS.

water-beaker
Aperçus

Need help collecting PFAS samples for NJDEP deadline December 15?

octobre 7, 2021

NJDES Category B or L Industrial Permit holders – If you haven’t obtained your first PFAS sample yet, time is running out. All New Jersey Pollutant Discharge Elimination System (NJDES) Category B or L Industrial Permit holders are required by the New Jersey Department of Environmental Projection (NJDEP) to collect two representative effluent samples, taken 30 days apart, to be analyzed for PFAS by an approved laboratory and submitted to them by December 15, 2021.

Interpretation-of-Waters-of-the-United-States-WOTUS-Reverts-to-Pre-2015-Regulatory-Definition-1
Mises à jour réglementaires

Interpretation of “Waters of the United States” (WOTUS) Reverts to Pre-2015 Regulatory Definition

septembre 29, 2021

Environmental Protection Agency (EPA) and U.S. Army Corps of Engineers (ACOE) revert to pre-2015 regulatory program definition of “Waters of the United States.”

8b0162b3-epa-solicits-comments-on-pfas-discharges
Mises à jour réglementaires

EPA Solicits Comments on PFAS Discharges in Five Point Source Categories

septembre 23, 2021

EPA solicits comments in five point source categories (PSCs) in the manufacture, use, treatment and discharge of PFAS.

a2aa90df-gettyimages-1263264401
Mises à jour réglementaires

PFAS Air Emissions Standards and Trends for Summer 2021

août 17, 2021

Environmental impacts of PFAS in ambient air leads to states implementing PFAS air-related thresholds.

GettyImages-1145592947-1
Aperçus

Cryptocurrency: The Environmental Threats and Opportunities

août 9, 2021

Cryptocurrency (also known as crypto) is taking the fintech industry by storm, despite the economic experts who still dismiss it as a viable form of currency. Although often criticized for this volatility, whistleblowers are also further shining a light on the severe toll that these digital currencies are taking on the environment.

GettyImages-2145498657
Livres blancs/rapports

TRC Colorado PFAS Regulatory Update

juillet 21, 2021

Update on Colorado’s recent policies and plans to regulate new and historical discharges of per- and polyfluoroalkyl substances (PFAS) into the environment.

599dbb6e-oil-ref-chem-plant-900px-1
Mises à jour réglementaires

2021 EPA TRI Reporting Requirements for Natural Gas Processing Facilities

juillet 12, 2021

Indication EPA finalizing a rule to add natural gas extraction or processing plants to EPCRA Toxics Release Inventory (TRI) reporting.

GettyImages-1147016023
Aperçus

Implementing bioremediation at environmental cleanup sites: TRC experts weigh in at leading industry conference

mai 17, 2021

TRC experts make several presentations at the Battelle conference about innovative approaches they have developed for implementing and monitoring bioremediation and the use of naturally-occurring or deliberately-introduced micro-organisms to break down environmental pollutants.

PFAS-Compounds-and-the-Toxics-Release-Inventory
Vidéos

PFAS Compounds & Toxics Release Inventory

avril 26, 2021

The National Defense Authorization Act of 2020 added 172 PFAS compounds to the list of chemicals that must be evaluated for reporting.

140de023-trc-pfas-sampling-advisory-on-aqueous-samples
Aperçus

PFAS Sampling Advisory on Aqueous Samples

avril 1, 2021

Advisory on collecting aqueous samples (e.g., groundwater, wastewater, stormwater, etc.) for PFAS analysis.

GettyImages-1367487978-1
Mises à jour réglementaires

Interim Guidance on Destruction and Disposal of PFAS & Materials Containing PFAS

février 19, 2021

Interim Guidance from EPA identifies 6 materials that use or manufacture PFAS and approaches for disposal.

GettyImages-1472604391
Aperçus

EPA Issues PFAS Air Emissions Draft Test Method OTM-45

février 5, 2021

First Air Emissions Draft Test for the Measurement of Selected Per- and Polyfluorinated Alkyl Substances from Stationary Sources

9dd39045-hands-with-microplastics-on-the-beach-1150805328-1440x910-1
Ressources

Microplastics Fate and Transport

janvier 31, 2021

This presentation discusses the fate and transport of microplastics and provides case studies of microplastic sampling projects.

GettyImages-2149301695-1
Mises à jour réglementaires

EPA continues to aggressively address PFAS wastewater with two new strategies

janvier 4, 2021

EPA takes steps toward PFAS wastewater and storm water permitting, and analytical methods for testing.

GettyImages-1359159050
Vidéos

PFAS at Metal-Plating Facilities: Environmental Management and Regulatory Developments

novembre 13, 2020

TRC is a national leader in per- and poly-fluoroalkyl substances (PFAS) characterization, research and technical consulting.

GettyImages-525440707-a
Nouvelles

TRC Companies Inc. Acquires 1Source Safety and Health

novembre 11, 2020

TRC Companies (« TRC”), a leading technology-driven provider of end-to-end engineering, consulting and construction management solutions, has acquired 1Source Safety and Health, a firm that provides management consulting services in areas such as indoor air quality, asbestos management, industrial hygiene and safety management systems.

Snipe at the edge of the swamp

Ecological Risk of PFAS from AFFF-Impacted Sites

juin 30, 2020

The facts on evaluating exposure to wildlife

49d320b3-refinery-at-sunset-637140248-b

TRC’s Reporting Tool Can Help Identify New PFAS under the TRI

mai 19, 2020

While utilities often work in technical silos, NERC auditors are trained to cross check compliance evidence and data between interrelated standards.

6c6dfc87-trc-microplastics-drinking-water
Aperçus

World Health Organization Examines Danger of Microplastics in Drinking Water

novembre 5, 2019

There’s growing concern that microscopic plastic particles could be having a detrimental effect on drinking water quality.

GettyImages-177551521
Aperçus

Michigan Steps Up Fight Against PFAS Contamination

mai 8, 2018

Michigan is cracking down on PFAS contamination with a pair of new regulatory actions aimed at protecting the state’s water supply.

5b2769f1-tire-wear
Aperçus

Environmental Impacts of Tire Wear: The Issue of 6PPD-Q

octobre 3, 2023

The best management practices for preventing 6PPD-Q from entering nearby streams include street sweeping, flow control through mitigation techniques and treatment.

fbc268c2-past_www_header
Ressources

Le rapport 2023 sur le taux d’eau et d’eaux usées en Virginie est maintenant disponible

juillet 24, 2023

La réussite d’une évaluation technique de l’impraticabilité est la collecte de données solides, la documentation et la communication efficace des conditions du site et du potentiel de restauration des eaux souterraines.

9497ca4d-gettyimages-1294228598
Mises à jour réglementaires

EPA Issues Clarification of Free Product Removal Requirements

juin 20, 2023

EPA recently clarified requirements for LNAPL recovery and remediation.

9dd39045-hands-with-microplastics-on-the-beach-1150805328
Aperçus

Microplastics ITRC Guidance Document and Training Available Soon!

février 23, 2023

Microplastic particles have been found in nearly every corner of the globe, but health effects and toxicity are only beginning to be understood. Because of their ubiquitous nature, microplastics present a challenge in both accurate sampling and source attribution. Microplastics are emerging as an environmental issue that regulators and industry will be increasingly focusing on in the coming years.

54f295dc-comprehensive-air-quality-assistance-photo
Ressources

Vapor Intrusion Assessment and Mitigation Case Study

février 23, 2023

Keys to a successful technical impracticability evaluation are sound data collection, documentation and effective communication of site conditions and groundwater restoration potential.

48ecc693-laboratory-safety-1440x810-1

QA and Chemistry Services

février 23, 2023

TRC offers many QA and Chemistry services including data usability assessments, limited and full data validation reports, quality assurance project plan preparation, selection of appropriate analytical methodologies and laboratory audits.

busy-open-plan-office
Ressources

Odor Evaluation Services

février 23, 2023

TRC is nationally recognized as an expert in the field of odor measurement, identification, modeling and control engineering. This presentation includes an overview of odor properties, odor evaluation, modeling and odor thresholds and outlines the four sensory properties: detectability, intensity, character and hedonic tone.

2298c6c7-water-drains-through-pipes-1254342538-1440x925-1

PFAS Fate and Transport

février 23, 2023

Understanding PFAS properties and behavior is key to effective detection and remediation.

c3965908-stream-flowing-through-forest-1021703630-1440x960-1
Ressources

PFAS Fate and Transport: Conceptual Site Models

février 23, 2023

The conceptual site model describes site-specific sources, release and transport mechanisms, exposure media, exposure points, exposure pathways and routes and potential human and/or ecological receptor populations.

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Ressources

PFAS: Data Collection and Analysis Part 2

février 23, 2023

There are many PFAS-related challenges, such as changing regulations, toxicology, fate and transport, analytical methods, remediation, public perception and more.

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Ressources

PFAS: Sampling and Analysis Part 1

février 23, 2023

Sampling and analysis of Per- and poly-fluoroalkyl substances (PFAS) requires specific techniques and analytical tools to ensure data quality.

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Mises à jour réglementaires

EPA Announces $2 Billion in Funding to Address Emerging Contaminants in Drinking Water

février 14, 2023

Environmental Protection Agency Administrator Michael Regan announced $2 Billion in infrastructure funding to help the nation’s rural water supplies.

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Ressources

PFAS: Remedial Approaches

février 8, 2023

Remediating Per- and poly-fluoroalkyl substances (PFAS) from the soil and water requires effective techniques and innovative technologies. TRC’s experts are well versed in several remediation strategies intended to remove PFAS and prevent re-exposure.

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Ressources

PFAS in Air: The Basics

février 8, 2023

Per- and poly-fluoroalkyl substances (PFAS) are a group of synthetic chemicals resistant to heat, water and oil. PFAS are widely detected in air as well as water and soil.

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Ressources

Metals 101

février 8, 2023

Metals are naturally occurring elements in the Earth’s crust that enter the environment through natural processes. They can be found in groundwater, soil and sediment. The trophic transfer of these elements in aquatic and terrestrial food chains has important implications for wildlife and human health.

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Ressources

Risk Communication Challenges for Emerging Issues

février 8, 2023

Risk communication is the exchange of real-time information, advice and opinions between experts and people facing threats to their health, economic or social well-being.

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Ressources

Green and Sustainable Remediation

janvier 9, 2023

Green and sustainable remediation (GSR) can optimize remedial activities, minimize environmental footprints and reduce social and economic impacts.

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Ressources

Emerging Contaminants- Microplastics, HABs and Cannabis

janvier 9, 2023

Microplastics, harmful algal blooms (HABs) and cannabis/hemp can present health and safety concerns.

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Ressources

Chlorinated Solvents 101

janvier 9, 2023

Chlorinated solvents are present in industrial chemicals and can post risks to the environment and human health.

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Aperçus

Equipment Decontamination and Replacement of Legacy Aqueous Film Forming Foams

Décembre 21, 2022

Legacy AFFF used for firefighting are a significant source of PFAS in the environment. With current and expected regulation, many entities are looking for replacements.

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Ressources

PFAS: The Basics

Décembre 14, 2022

Per- and poly-fluoroalkyl substances (PFAS) are a group of synthetic chemicals resistant to heat, water and oil. These persistent chemicals have been found to be ubiquitous toxins in our environment.

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Ressources

Petroleum Hydrocarbons 101

Décembre 14, 2022

This presentation defines petroleum hydrocarbons and covers the range of products and constituents that comprise petroleum hydrocarbons.

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Ressources

Advanced NAPL Site Characterization Tools

Décembre 14, 2022

Advanced NAPL site characterization tools can improve site understanding and remediation performance.

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Mises à jour réglementaires

New National Emerging Contaminants Research Initiative

septembre 12, 2022

The Executive Office of the President of the United States announced a National Emerging Contaminant Research Initiative

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Vidéos

Webinar Reply: Minnesota’s PFAS Monitoring Plan

juin 13, 2022

Minnesota’s PFAS Monitoring Plan: Other Test Method (OTM) 45 for Measuring PFAS Air Emissions

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Aperçus

PFAS Experts Symposium 2: An Update on Advances in Chemical Analysis of PFAS

mars 23, 2022

A recap of how the analysis of per‐ and polyfluoroalkyl substances (PFAS) has evolved since the first PFAS Experts Symposium in 2019.

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Aperçus

The Best Process for Transforming Thermal Generation Power Plants

février 9, 2022

Faced with an aging fleet, stricter environmental regulations, reduced costs for natural gas and competition from renewables, more than 600 power plants have been decommissioned in the last 20 years, a pace that will increase with the announced closure of nearly 350 additional plants by 2025.

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Aperçus

Blast from the Past: How TRC Helped a Small UK Village Remove WWII Grenades and Mines from Playground

Décembre 11, 2021

When an straightforward remediation project came to a screeching halt after work crews unearthed live grenades, officials in Weedon Bec turned to TRC.

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Livres blancs/rapports

TRC Colorado PFAS Regulatory Update

juillet 21, 2021

Update on Colorado’s recent policies and plans to regulate new and historical discharges of per- and polyfluoroalkyl substances (PFAS) into the environment.

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Aperçus

Implementing bioremediation at environmental cleanup sites: TRC experts weigh in at leading industry conference

mai 17, 2021

TRC experts make several presentations at the Battelle conference about innovative approaches they have developed for implementing and monitoring bioremediation and the use of naturally-occurring or deliberately-introduced micro-organisms to break down environmental pollutants.

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Nouvelles

TRC to Oversee $104 Million Demolition Project at Los Angeles’ Haynes Generating Station

avril 24, 2021

TRC to dismantle and remove four decommissioned generating units in Long Beach, Calif., to pave way for LADWP’s clean grid initiatives.

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Vidéos

Breakthrough Solutions for Coal Combustion Residuals Compliance

septembre 3, 2020

TRC is your trusted partner, helping to navigate the economic, environmental and regulatory pressures as well as the rapid technological advancements impacting successful coal ash management.

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Ecological Risk of PFAS from AFFF-Impacted Sites

juin 30, 2020

The facts on evaluating exposure to wildlife

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TRC Brings Environmental Services to Manchester with Second UK Office

mars 5, 2020

In continuing to expand our presence in a key British market, TRC is opening our second UK office in Manchester, England

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Nouvelles

TRC and Environmental Partners, Inc. (EPI) have entered into definitive agreement for the sale of EPI’s business

novembre 25, 2019

TRC and Environmental Partners, Inc. (EPI) have entered into definitive agreement for the sale of EPI’s business

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Aperçus

World Health Organization Examines Danger of Microplastics in Drinking Water

novembre 5, 2019

There’s growing concern that microscopic plastic particles could be having a detrimental effect on drinking water quality.

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Aperçus

Why Coal Ash Impoundments and Landfills Make Great Solar Sites

septembre 25, 2019

Hundreds of coal ash sites are set to close over the next decade and could make ideal, low-impact locations for utility-scale solar farms.

Sustainability
Nouvelles

TRC Remediation Project at Roche Nutley Site in New Jersey Wins National Grand Prize for Sustainability

mai 7, 2019

TRC was awarded the 2019 Grand Prize for Environmental Sustainability by the American Academy of Environmental Engineers & Scientists for the cleanup of the former Roche site in Nutley, N.J.

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Aperçus

Groundwater Recharge: How It Affects Your Decisions

mai 30, 2018

Often misunderstood, groundwater recharge rate is an important consideration when assessing groundwater supply or aquifer vulnerability.

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Nouvelles

TRC Acquires Hazmat Assessment Firm American Environmental Consulting

janvier 3, 2018

TRC, a leader in engineering, environmental consulting and construction-management services, announced today that it has acquired American Environmental Consultants, Inc. of Weymouth, Mass., a hazardous materials assessment company.

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Mises à jour réglementaires

EPA to Include CERCLA Sites and RCRA Facilities in Site Remediation NESHAP

juin 23, 2016

EPA has published a proposed rule that would extend the requirements of the Site Remediation National Emission Standards for Hazardous Air Pollutants (NESHAP) regulations to previously exempt soil and groundwater remediation activities under CERCLA and RCRA.

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Médias

Successful Coal Ash Pond Management

juillet 10, 2014

Regulatory requirements, plant retirements, changes to facility operational profiles, environmental liability management and political and social pressures are among the factors driving utilities to close or consider closing their coal ash ponds.

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Victoria Mann

Victor an Environmental Engineer and is TRC’s Technical Director for Water and Wastewater. Victor has 30 years of experience in remediation, water and wastewater treatment. Medina has a M.S. and Ph.D. in Civil/Environmental Engineering from the University of Southern California and is currently based in Jackson, Mississippi. Victor has five patents for innovative environmental technologies and specializes in developing effective solutions to challenging environmental problems. Contact Victor at vmedina@trccompanies.com.

Michael Eberle

Michael Eberle is a Technical Director within TRC in Philadelphia, Pennsylvania. Mr. Eberle is also a member of TRC’s Centers of Research & Expertise (CORE) for in‐situ remediation and treatment train optimization. Mr. Eberle has over 30 years of environmental consulting experience, including over 27 years of experience designing, troubleshooting, and managing the operation of multiphase hydrocarbon product extraction, bioventing, and in‐situ/ex-situ groundwater remediation systems. Additionally, Mr. Eberle is tasked with lending his chemistry background to understanding, characterizing, and tracking emerging chemicals under regulatory scrutiny.