we get to the real problem. with the insight to solve it.
DISCOVER HOWwe get to the real problem. with the insight to solve it.
DISCOVER HOWWe provide science and engineering insight, strategy, and project delivery for health, environmental, and natural resource challenges — past and present.
The services you need to get the right job done right
From analysis and assessment to negotiation and design, we have the services — and the team — to deliver the best solutions each and every time.
How? Our team of toxicologists, engineers, geoscientists, marine scientists, chemists, data scientists, and others skillfully blend technical expertise with big-picture context and insight.
The services you need to get the right job done right
From analysis and assessment to negotiation and design, we have the services — and the team — to deliver the best solutions each and every time.
How? Our team of toxicologists, engineers, geoscientists, marine scientists, chemists, data scientists, and others skillfully blend technical expertise with big-picture context and insight.
RECENT NEWS & ARTICLES
Marcia Greenblatt Authors Article on Groundwater Permitting and the Clean Water Act in Law 360
Could your groundwater discharge require a permit under the Clean Water Act? Integral Consulting Principal Marcia Greenblatt, Ph.D., P.E., explains the technical issues and challenges that you may need to address, pending the outcome of a Supreme Court decision on a...
read moreCome Join Us! Explore Opportunities with Integral at Duke University Career Fair
Integral Consulting Inc.’s Ann Bradley and Chris Stevens will host a booth at the Duke University first-annual Nic Explore Career Options (ECO) event, held on November 14. This career fair is sponsored by the Nicholas School of the Environment, which offers academic...
Environmental Forensics: What is it? Where did it come from? And is it mine?
Questions about the sources of chemicals in the environment can be addressed through forensic methods. Integral scientists Andrew Nicholson, Ph.D., and Dreas Nielsen will teach an environmental forensics course as part of the certification requirements for licensed...
Pesticides, Products, and Firefighting Foams: Integral Presents on Risk at SETAC
Integral Consulting scientists are sharing the results of studies and new approaches for risk assessment at the 40th annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC). Held in Toronto, Canada, on November 3–7, 2019, the conference...
CASE STUDY
Stormwater Source Control: Willamette River, Oregon
OUR CHALLENGE
At the inactive Arkema facility, part of the Portland Harbor Superfund site, DDT from past manufacturing remained in upland soil and was potentially vulnerable to transfer to the river via stormwater. The Oregon Department of Environmental Quality (DEQ) and EPA required stormwater source control measures meet both federal criteria for sediment cleanup under CERCLA and state ambient water quality standards under the Clean Water Act—an ambitious challenge.
OUR APPROACH
Our design goal was to eliminate DDT in all stormwater discharge to the Willamette River from the 55-acre site utilizing a passive treatment system—a previously unproven standard. Our system design included decommissioning of existing stormwater lines, temporary capping of DDT-impacted soils, and stormwater detention and sand filtration prior to discharge to the river.
OUR IMPACT
System operation has been a success—100 percent of site stormwater is treated, and DDT effluent concentrations have decreased more than 96 percent (meeting the goal of 50 nanograms per liter). The system requires little O&M and no power. DEQ featured the system and collaborative effort in a Portland Harbor source control video.