PetroFix Newsletter November 2021

PetroFix Client Spotlight: Stephanie Black

Stephanie Black brings over 25 years of environmental experience in areas including Phase I and Phase II environmental site assessments, Brownfield assessments, and more. As Project Manager for American Environmental Corporation (AEC), a consulting, engineering and contracting firm and valued REGENESIS® client, Ms. Black continues to provide expertise in an array of environmental remediation services. She begins, “In addition to performing environmental site and Brownfield assessments, I’ve managed regulatory compliance audits, permit preparation, and asbestos and lead surveys.  I am also AEC’s Ohio office health and safety coordinator, providing assistance and reviews for site-specific health and safety plans for projects.”

Subscribe to our eNewsletters

Emerging PetroFix Application Approach: Underground Storage Tank (UST) Basin Flood

PetroFix® can be flooded into active tank basins to help address dissolved contamination that may be resident from prior releases and that may be difficult to reach with normal injection approaches.  PetroFix also can be pre-applied to gravels and basin or utility cavities during installation of fuel infrastructure following a previous leak and remediation project, or during scheduled replacement of pipelines and underground storage tanks. This pre-application prevents contamination of clean backfill and reduces the risk and spread of future pollution events. Preventative treatment costs will be low and provide savings by avoiding/reducing the scale of any remedial works needed. PetroFix is a liquid form of activated carbon and so can provide unequalled coverage and coating of bedding materials. It spreads easily, is non-toxic and safe to handle and apply.

Case Study: PetroFix Applied To Active UST Basin, Quickly Meeting Cleanup Goals

This case study reviews an active gasoline station in Colorado where stained soils were discovered during the replacement of the underground storage tank (UST) spill buckets. After considering multiple options, CGRS, a leading environmental consulting firm, developed and implemented an innovative, low-risk, and highly cost-effective treatment program utilizing PetroFix to address the groundwater contamination in situ.

Emerging PetroFix Application Approach: Emergency In-Situ Spill Response

While hydrocarbon spill response methods reduce the immediate impact of a spill, residual risks remain because remaining hydrocarbons can form groundwater plumes that may threaten downgradient receptors or cross property boundaries.   Eventual remediation of these residual risks can be costly because the time between emergency response and formal remedial assessment takes time while contaminants continue to migrate.  Unfortunately, movement of residual contamination over boundaries can result in extra complexity and cost. PetroFix Remediation Fluid can be used in combination with other spill response methods such as excavation as a downgradient properly line barriers preventing plume encroachment (as shown in the figure above) or a trench or excavation surface coatings that reduce the vertical migration and formation of dissolved contamination in situ after a spill.  A case study highlighting the latter scenario is linked below.

Case Study: Fuel Spill From Truck Rollover Receives No Further Action Following PetroFix Application

This case study reviews a semi-truck that was hauling gasoline and diesel and overturned into a dry irrigation ditch in Montana. The diesel tanks ruptured and released fuel into the ditch, impacting the shallow water table with petroleum hydrocarbons (PHCs), including benzene, toluene, ethylbenzene, and xylenes (BTEX). Learn more by downloading the case study.

Emerging PetroFix Application Approach: Permeable Reactive Barriers for Construction Sites

A Permeable Reactive Barriers (PRB) is made by creating a subsurface permeable reactive cell that intersects groundwater flow. The PRB prevents any further migration of pollution in the groundwater by reacting with it through sorption, biological degradation or other processes. Typical installations include: mixing reactive media with soils using augers, soil mixing and piling rigs, replacing existing soils with granular fill mixed with reactive media through trenching, and installation of replaceable reactive media filters/cartridges – normally installed as a funnel-and-gate system using sheet pile or cement slurry walls.  However, PetroFix injected in situ can be a faster and effective alternative to these costly and equipment intensive alternatives while keeping costs low, providing a long-term solution and maximizing development footprint.

Case Study: Remediation of the Largest Train Maintenance Depot in Northern Europe

The Swedish rail authority required that an entirely in situ remediation strategy be implemented across the largest train maintenance depot in northern Europe, located in Hagalund, Sweden. As part of the remedial works, Swedish remediation contractor Envytech installed a network of additional monitoring wells across the site. This was done to better delineate the plume and identify any unknown contamination prior to commencement of remediation. Site investigations identified LNAPL across much of the northern area of the site, which required a revised groundwater remediation strategy. Download the case study to learn more.

Featured Case Study: PetroFix Used to Drive UST Release Across the U.S. 

This case study reviews a retail petroleum station with a petroleum hydrocarbon plume in groundwater originating from the UST pit and extending offsite across a roadway and onto another commercial property. After evaluating a range of remedial options, the environmental consultant CGRS specified PetroFix as the most economically feasible option to quickly remediate the benzene plume and achieve site closure.

Are You Ready To Start Your Project? Get Started Today!

Use our online software to generate an estimate when you need it, visit If you have any questions regarding your design, one of our Technical Solutions Managers would be happy to provide support.