The enormity and complexity of the scientific and engineering challenges posed by per- and polyfluoroalkyl substances (PFAS) cannot be overstated. More than 10,000 chemicals meet the varied definitions of PFAS. Their detection in the environment is widespread, and...
On April 10, 2024, U.S. Environmental Protection Agency (EPA) announced its final National Primary Drinking Water Regulations for the following six per- and polyfluoroalkyl substances (PFAS): perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS),...
Recent peer reviewed studies have explored the potential for some per-and polyfluoroalkyl substances (PFAS) to volatilize from groundwater and soil and enter indoor air via the vapor intrusion (VI) pathway. This research is in its early stages, emphasizing the need...
Supplemental environmental projects (SEPs) provide one means of addressing environmental violations in alignment with the Biden Administration’s comprehensive environmental justice (EJ) strategy. SEPs were explicitly endorsed by Attorney General Merrick Garland as a...
On Friday, the U.S. Department of the Interior (DOI) announced proposed changes to certain methods used to assess natural resource damages for hazardous substance releases under the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA)...
The Benthic Zone newsletter is the place where Integral scientists and engineers share their expertise, running the gamut of topics related to investigation, forensic evaluation, modeling, and remediation of contaminated sediment. Take a look under the water with us. ...
Poster presented at AEHS West Conference, March 20–23, 2023, San Diego, California In 2021, a daycare center serving a disadvantaged community in Oakland, California was closed due to concerns about potentially unsafe levels of volatile organic compounds in the...
Additional contributions by Louise Venne (louise.venne@woodplc.com), Phil Pauquette (phil.pauquette@woodplc.com), and Cynthia Draper (cynthia.draper@woodplc.com) (Wood, Kennesaw, GA, USA) Poster presented at Battelle Sediments Conference, Jan 9-12, 2023, Austin,...
A group of more than 30 researchers and professionals—including R. Jeffrey Davis, principal in Integral’s water resource management practice—authored a report urging collective action to preserve the Great Salt Lake from catastrophic collapse. The report details the...
Additional contribution by Kathryn Purcell (Port of San Francisco) Poster presented at Battelle Sediments Conference, Jan 9-12, 2023, Austin, Texas Background/Objectives Policies and regulations that govern dredging, the placement of fill, and other in-water work...
It used to be all about glass—glass was too heavy, too expensive, and too dangerous to you or others if it fractured—so we invented plastics—strong, lightweight, less expensive. Half of all plastics ever made have been made in the last 17 years. It is estimated almost...
Abstract The burrowing ghost shrimp Neotrypaea californiensis and Neotrypaea gigas, are recognized primarily from soft-sediment intertidal mudflats of estuaries and coastal lagoons in the northeastern Pacific from southern Alaska to Baja California. Individual...
Abstract Marine renewable energy (ME) projects in the United States must complete a wide range of environmental permitting activities focused on evaluating the potential interactions between the technology and the environment (endangered species, habitats and human...
Remediation of contaminated sediment sites often involves the dredging and disposal of sediment and debris. It is well documented that surface sediment remaining after environmental dredging operations contains elevated contaminant levels. These postdredging...
Introduction Polychlorinated biphenyls (PCBs) are contaminants of concern in many industrial waterways because of their prevalent historical use and persistent nature in sediment and soil. In urban waterways with multiple industrial sources, costly remediation is...
Abstract Determining the amount of restoration needed to compensate the public for injury to natural resources is central to estimating natural resource damages (NRDs). Formal restoration scaling methods have not considered environmental justice to date. The...
Abstract Determining the scale of restoration needed to compensate the public for injuries to natural resources is central to estimating natural resource damages for unpermitted releases of contamination. This paper discusses the inclusion of environmental justice in...
Do you need to address coastal hazards related to sea level rise and climate change? Integral’s Coastal ADAPT is a state-of-the-science approach that informs adaptation planning and facilitates community involvement in decision-making. Developing robust sea level rise...