Remediation Video: Migrating Plume Treatment with PlumeStop™

Regenesis Remediation Services (RRS™) recently worked on a site in the Southeast that was contaminated with high levels of TCE. RRS used a combined remedies approach to treat the contamination. PlumeStop™ was applied to stop the TCE plume from migrating off-site while 3-D Microemulsion®, CRS® and BDI® Plus were used to treat the source contamination.

In this video, RRS Project Manager Steve Barnes discusses the application approach and how the different products complement each other to reach the remediation goals of the project. Click here to view the video.

Case Studies from Chlorinated Solvent Remediation Webinar Now Available

A graph from one of the case studies featured in the recent webinar. The data suggested insufficient bacteria were present to promote accelerated reductive dechloriation. Consequently, the bioaugmentation substrate BDI Plus was applied within the ERD treatment area.
A graph from one of the case studies featured in the recent webinar. The data suggested insufficient bacteria were present to promote accelerated reductive dechloriation. Consequently, the bioaugmentation substrate BDI Plus was applied within the ERD treatment area.

On February 18, REGENESIS hosted a webinar titled “In Situ Remediation Strategies for Chlorinated Solvents in Groundwater”. Special guest Steven Sittler, Senior Project Manager at KERAMIDA Inc., presented case studies and discussed how enhanced reductive dechlorination and bioaugmentation were used on-site.

During the presentation, Mr. Sittler stressed the importance of the “3 D’s” – Donor, DHC and Distribution. On many of the sites he has worked on, Mr. Sittler used 3-D Microemulsion for the donor product and BDI Plus as the dehalococcoides sp. However, he emphasized that distribution is equally as important as the products. “It doesn’t matter how good the products are if you can’t get them where they need to be. So it’s very important to have a good partner…and to have a good understanding of what is happening on-site,” he says.

A selection of the case studies presented by Mr. Sittler have now been published in full on our website.  To access each case study, please click this links below.

Featured Case Studies

$1 Million Dollar Savings for Insurance Funded Remediation Project through Use of In Situ Chemical Oxidation and Enhanced Reductive Dechlorination

Combined Remedies Approach (Dual Phase Extraction, ISCO and ERD) Lead to Rapid Results on a Guaranteed Cost to Closure Project in Indiana

Combined Remedies Treatment Results in a $650,000 Cost Savings for End User

 

New REGENESIS Project Profiles Available Online

REGENESIS recently updated our online Project Profile library. From brownfields to Department of Defense pay-for-performance sites, the Project Profile library highlights our most recent remediation projects.  Below are a few examples of our latest Project Profiles. To view the entire library, click here.

ORC® Advanced Pellets Utilized as Part of Combined Remedy Approach at Ohio Brownfields ProjectBrownfield 1

The site, a former cordage and twine factory in Ohio, was closed in 2004 after 125 years of operation. The city and developer secured $1.98 million in brownfields funding through the Clean Ohio Revitalization Fund (CORF). These funds were secured for demolition and remediation activities at the site included but not limited to asbestos removal, underground storage tank removal, and contaminated soil excavation and demolition activities.

 

Chlorinated Solvents in Soil, Gas, and Groundwater Remediated at Former Manufacturing Facility

Blog Post 2

The site, a former industrial magnet manufacturing facility in Ohio, received a $2.34 million Clean Ohio Revitalization Fund grant through the Ohio Department of Development in 2011. Site investigation activities identified chlorinated VOCs in groundwater and vapors above the state regulatory limits. Using a combined approach of ERD with vapor mitigation addressed the immediate risk of vapor intrusion and the long-term risk of groundwater impacts. By implementing this strategy, the site was allowed to be redeveloped as an apartment complex roughly 6 months following the groundwater treatment. “No Further Action” status and covenant not to sue letter was granted in 2013. The site currently operates as a residential apartment complex.

 

1,4-Dioxane and 1,1-DCE in Fractured Bedrock Treated with ISCOBlog Post 3

A former manufacturing facility in New Jersey was contaminated with 1,1-DCE, 1,1-DCA, and 1,4-dioxane in the fractured bedrock aquifer. Previous pump and treat activities were successful at containing and reducing 1,4-dioxane concentrations; however, off-site transportation and disposal of recovery water was expensive. PersulfOx ISCO was selected as a lower-cost alternative that could combat 1,4-dioxane contamination in situ.

 

 

Redeveloped DOD Site Treated with Turn-Key ISCO Remediation

Blog Post 4Regenesis Remediation Services (RRS) was contracted to remediate this former DOD facility. Perchlorethene (PCE) levels of 400 ppb were treated with in situ chemical oxidation (ISCO) employing PersulfOx Catalyzed Persulfate technology. The application included two injection events which involved working within an active parking area of an operating business. The original site design included utilizing direct-push injections, but RRS readjusted the plan in the field after product surfacing was observed in one area that was under construction. Despite the redesign, the application was completed ahead of schedule and under budget.

 

 

Sequential Anaerobic and Aerobic Treatment of Chlorinated Solvents to MCLs Blog Post 5

The site is located in the South Carolina Coastal Plain and is a former light industrial facility. Baseline concentrations of total chlorinated VOCs – which included tetrachloroethene (PCE) and daughter products plus 1,1-dichloroethene (DCE) – were as high as 2,000 ug/L in the near-source groundwater. The treatment involved sequential anaerobic and aerobic treatment using HRC® and ORC® Advanced.

Award-Winning Project on Bioremediation of PCE DNAPL Featured in Pollution Engineering Magazine

Regenesis was featured in the February 2014 issue of Pollution Engineering magazine.

A noteworthy REGENESIS project was recently featured in an issue of Pollution Engineering magazine. The article highlighted the remediation of an active dry cleaning facility that was contaminated with high levels of PCE including DNAPL. This award-winning project provides a strong case for the performance and cost savings that can be realized through the use of injectable, controlled-release hydrogen substrates to facilitate in-situ, enhanced anaerobic biodegradation. When considering the overall performance, cost savings, ability to maintain ongoing commercial site operations, minimal site disturbance and low health and safety risk, this approach was proven to be highly effective. Overall, the project surpassed the expectations of the client, exceeded the project sign-off goals proposed to the regulators and achieved site closure in January of 2013.

Click here to read our latest contribution to Pollution Engineering magazine.

Advanced Site Characterization and Combined In-Situ Chemical Oxidation (ISCO) / Enhanced Bioremediation Achieve 90% Mass Removal at Large Petroleum Site

An on-site storage tank released 5,000 gallons (19,000 liters) of petroleum hydrocarbons at a site in Northern Ontario, Canada. The project was managed and completed by Vertex, a Canadian environmental remediation company, specializing in in-situ treatment.

In order to strategically pinpoint the location of hydrocarbon mass and most effectively target the delivery of remedial reagents, Vertex deployed advanced site characterization using a membrane interface probe (MIP) and laser induced fluorescence(LIF). Based on the detailed data derived from these advanced tools and the analytical data, Vertex designed and implemented an aggressive in-situ remedial action plan based on reagent injection. To effectively treat the contaminants, Vertex chose to use a combined technologies approach by integrating in-situ chemical oxidation (ISCO) and enhanced aerobic bioremediation through the application of RegenOx® and ORC Advanced®, two widely used and proven reagents from REGENESIS.

The application of these products was completed using temporary injection points that were injected using both bottom-up and top-down injection methods at depths ranging between 9 ft. (3 m) and 78 ft. (26 m) below ground surface. In total, over 441,000 lbs.(200,000 kg) of remedial reagents (RegenOx and ORC Advanced) were injected into the subsurface over a two year period. This approach resulted in significant mass reductions across the site and a 90% petroleum hydrocarbon decrease (from 240,000 ug/L to < 1400 ug/L) in one of the most highly impacted wells.

 

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Regenesis Remediation Services (RRS) Completes In Situ Remediation Project Adjacent to Lambeau Field Home of the Green Bay Packers

The Regenesis Remediation Services (RRS) injection support trailer with Lambeau Field in the backdrop

Regenesis Remediation Services (RRS) recently completed an in situ remediation project at a site adjacent to Lambeau Field, home of the NFL’s Green Bay Packers. The environmental cleanup effort was focused on chlorinated solvent contamination in groundwater which resulted from operations at a former auto repair facility and accompanying parts degreasing processes.

Chlorinated solvents such as perchloroethene (PCE) and trichloroethene (TCE) are particularly effective at removing organics such as oil, grease and dirt from metal surfaces. Unfortunately, spills and the improper handling/disposal of chlorinated solvents can pose a threat to human health due to resulting groundwater and soil contamination. At this site in particular, a relatively old chlorinated solvent release resulted in groundwater contamination leading to an exceedance of the state regulatory Preventive Action Limit (PAL). The experienced application team at RRS was contracted to treat the source area through the application of two proven and cost-effective in situ remediation technologies, 3-D Microemulsion®, an injectable electron donor and Bio-Dechlor INOCULUM® PLUS, a specialized bioaugmentation culture. These technologies are designed to stimulate naturally occurring biological communities which in turn anaerobically degrade problematic chlorinated solvents.

At this site RRS teamed with a local direct-push contractor to apply 3D Microemulsion and BDI Plus into a silty-clay subsurface from 7’ to 15’ below ground surface. This in situ remediation project was approved and permitted by the State of Wisconsin, Department of Natural Resources. In the photo you can see the custom RRS injection trailer which houses specialized equipment used for mixing, batching and applying a range of Regenesis’ remediation amendments.

For more information about Regenesis Remediation Services contact Scott Mullin at smullin@regenesis.com  or by phone at 630-319-0836.

RegenOx® Remediates Diesel-contaminated Soil at Katmai National Park and Preserve, Alaska

In 2007, Katmai National Park personnel discovered hydrocarbon contamination near the subsurface of Naknek Lake while acquiring sand to replace a septic system.  According to the National Park Service (NPS), from 1975 to 1993, the NPS made deliveries of diesel fuel to this area and filled fuel tanks by way of a fill port. The diesel contamination was likely associated with these fueling activities.  To remediate the site, the NPS mixed and applied 1,000 pounds of RegenOx, physically breaking down diesel hydrocarbon chains in the soil.  After treatment with RegenOx, concentrations of diesel-range organics were reduced by approximately 90% across the stockpile.  Read more about this case here.

New Case Summary: PersulfOx Remediates Chlorinated Compounds at Massachusetts Industrial Site

In late 2012, chlorinated compounds were discovered in shallow groundwater at a former industrial site in Attleboro, Massachusetts. With groundwater VOC concentrations as high as 85,000 ug/L, environmental engineers needed an aggressive remediation solution. They chose in situ chemical oxidation using PersulfOx to treat a 35’ long X 35’ wide X 15’ deep area. Regenesis’ new ISCO technology—PersulfOx—is an all-in-one catalyzed persulfate that reduces health and safety risks associated with traditional persulfate application.  PersulfOx’s built-in activation simplifies logistics and field application, thereby decreasing cost. After 7 months of treatment with PersulfOx, one treatment well revealed an 81% reduction in VOCs and another showed a 99% reduction. To read more about this case, please click here: PersulfOx Case Summary – Industrial Site Massachusetts

New Groundwater and Soil Remediation Summaries Now Available

Don’t have the time or fortitude to sift through several pages of text, graphs and charts? Check out an abbreviated version of our traditional case studies in a format that focuses on the important things most people want to know. These new Remediation Project Summaries provide a condensed but meaningful glimpse into a range of remediation applications, technology performance and project outcomes.

The current list of Project Summaries includes:

  • RegenOx® In Situ Chemical Oxidation Treats TPHd at DoD Site with Sensitive Underground Infrastructure
  • 3-D Microemulsion® Barrier Application Enhances Rate of Dechlorination at Landfill Site
  • Integrated Site Remediation Approach Results in a 96% Reduction in Chlorinated Solvents
  • Enhanced Microbial Activity post-RegenOx® Treatment at Four Dry Cleaner Sites
  • 3-D Microemulsion® Reduces Chlorinated Solvents by 92% over a Period of 1 Year
  • Integrated Site Remediation Approach around Sensitive Underground Infrastructure Treats Petroleum Hydrocarbons at Historical Landmark

 

If you or a colleague would like to have your project featured on our Project Summaries page or as a Case Study please contact us at casestudies@regenesis.com.

To be in alerted to the addition of project summaries or case studies as they are posted please join our mailing list.

REGENESIS provides advanced technologies for groundwater resources, including specialty soil and groundwater remediation products. If you’re unsure of the condition of your site, you can request a free site evaluation from REGENESIS. For more information, follow us on Twitter, “Like” us on Facebook and subscribe to our YouTube channel. Also, keep up with our blog for all the latest updates.

Case-Study: Cleaning Up Chlorinated Solvents at a Dry Cleaning Facility

By Bryan Vigue, Vice-President of Marketing REGENESIS

I recently came across a compelling case study on long-term and effective chlorinated solvent treatment at a property in the mid-west. The subject site was a dry cleaning facility which produced a chlorinated hydrocarbon plume in groundwater containing both tetrachloroethene (PCE) and trichloroethene (TCE) with concentrations as high as 700 ug/L. The subsurface was somewhat complex consisting of silty clay with intermittent sand stringers underlain by a clay till confining layer. Additionally this site was identified to have a high sulfate environment (~100 mg/L) which can be a potential inhibitor for enhanced bioremediation.

The remediation approach undertaken was enhanced anaerobic bioremediation which required a controlled-release carbon source to drive the sequential biodegradation of PCE and TCE.  3-D Microemulsion®, a 3 stage, controlled-release electron donor with enhanced distribution characteristics was selected and injected at several locations on the site.

The results were positive as 3-D Microemulsion overcame the high sulfate levels and resulted in a strong reducing environment quite favorable for anaerobic biodegradation. Sampling at almost 2 years after the application of 3-D Microemulsion indicated sustained reducing conditions and reduction of chlorinated solvents by 83% to 98% in all impacted wells. The site is currently pending regulatory closure. For a more information visit https://regenesis.com/regenesis-resource-center/case-studies/cs-detail.aspx?ID=149.

REGENESIS provides advanced technologies for groundwater resources, including specialty soil and groundwater remediation products. If you’re unsure of the condition of your site, you can request a free site evaluation from REGENESIS. For more information, follow us on Twitter, “Like” us on Facebook and subscribe to our YouTube channel. Also, keep up with our blog for all the latest updates.