PFAS Detected in Drinking Water Supply: New Jersey

PFAS Detected in Drinking Water Supply: New Jersey PFAS Detected in Drinking Water Supply: New Jersey OUR CHALLENGE Per- and polyfluoroalkyl substances (PFAS) were detected in a potable water supply well.  Meanwhile, the regulatory agency was contemplating drinking water standards for PFAS in the low...

Former DDT Manufacturing Facility Site Investigation: Oregon

Former DDT Manufacturing Facility Site Investigation: Oregon Former DDT Manufacturing Facility Site Investigation: Oregon OUR CHALLENGE DDT and related chemicals from historical pesticide manufacturing and other sources were found in river sediments at the Portland Harbor Superfund site.  Early in the project, little was known...

In Situ Groundwater Remediation: California

In Situ Groundwater Remediation: California In Situ Groundwater Remediation: California OUR CHALLENGE PCE from a former industrial laundry had contaminated groundwater beneath an active commercial building and neighboring properties.  The regulator and neighbors had concerns about whether the investigation and...

Stormwater Source Control: Willamette River, Oregon

Stormwater Source Control: Willamette River, Oregon 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. ...

Berry’s Creek Study Area RI/FS: New Jersey

Berry’s Creek Study Area RI/FS: New Jersey Berry’s Creek Study Area RI/FS: New Jersey OUR CHALLENGE The Berry’s Creek Study Area is a 12-square-mile watershed located in the Hackensack River Meadowlands in New Jersey.  Historical industrial and urban development of the study area’s waterways and wetlands...

Groundwater Treatment for Automated Control System Upgrade: Texas

Groundwater Treatment for Automated Control System Upgrade: Texas Groundwater Treatment Automated Control System Upgrade OUR CHALLENGE Our client was using an outdated, 1990s-era control system for automated operation of its groundwater treatment system.  Pieces of the control system were no longer manufactured, and we were unable...

Lower Passaic River RI/FS: New Jersey

Lower Passaic River RI/FS: New Jersey Lower Passaic River RI/FS: New Jersey OUR CHALLENGE The Lower Passaic River has a long history of industrialization, leading to elevated levels of dioxin and other contaminants throughout the 17-mile study area.  The urban setting presents substantial engineering...

Risk Assessment and Remediation: Texas

Risk Assessment and Remediation: Texas Risk Assessment and Remediation: Texas OUR CHALLENGE At the Greens Bayou site near the busy Houston ship channel, our client faced legal and regulatory action to address past releases of hazardous substances—including DDT and PCBs—from historical operations.  Concerns...

Stormwater Treatment System at a Sawmill: California

Stormwater Treatment System at a Sawmill: California Stormwater Treatment System at a Sawmill: California OUR CHALLENGE At our client’s sawmill in northern California, chemical oxygen demand (COD), biochemical oxygen demand (BOD), total suspended solids (TSS), and zinc all exceeded general industrial stormwater permit...