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
Join Integral at Ocean Renewable Energy Conference 2019
Integral Principal Craig Jones, Ph.D., and Senior Consultant Grace Chang, Ph.D., will attend the Ocean Renewable Energy Conference (OREC) 2019 on September 11 and 12 in Portland, Oregon. Meet with them to learn more about Integral’s innovative tools that support the...
read moreTiers for Fears: Applying Fit-for-Purpose Risk Assessment in Environmental Stewardship
Being a good environmental steward involves understanding the environmental hazards of products or materials and reducing potential risk to humans and wildlife. But how do you refine understanding and predict the risk? Is there a tiered risk methodology? Integral...
Integral Consulting Named to List of Top Environmental Firms
Science and engineering firm Integral Consulting Inc. was recently named to Engineering News Record’s list of Top 200 Environmental Firms worldwide. To be selected, firms are ranked by their percentage of gross revenue from environmental services in eight market...
What’s that sound? Integral Presents on State-of-the-Art Acoustic Tool at EWTEC
Monitoring underwater sound is critical for evaluating potential environmental effects of marine renewable energy projects. Yet, underwater noises generated by marine and hydrokinetic energy devices, mammals, boats, and fish are often poorly characterized. ...
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.