Webinars

Complete 2018 webinar schedule coming soon, please sign up for our e-mail list for notifications. To view our previous webinars, visit our Remediation On-Demand Webinars page. 

Per- and Polyfluoroalkyl Substances (PFAS)

 TBD*
12pm CDT 

Presenter:
Mr. Brian Hoye, Emerging Contaminant Expert, Burns & McDonnell

Bio: 
Mr. Brian Hoye, PG is a Sr. Geologist and Project Manager who has served on and managed a variety of environmental projects for private-sector and DoD clientele. His practice has focused on emerging contaminants, new environmental regulations, and innovative site characterization techniques.  He is a core member of Burns & Mac Remediation Practice and leads their Per- and Polyfluoroalkyl Substances (PFAS) Technical Group.

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Combined Remedies Webinar Series

Achieving remediation site closures can be challenging, time-consuming, and costly. Treatment train approaches or combined remedies are often a practical means to address difficult remediation sites. The optimal approach to soil and groundwater clean-up often requires the use of multiple technologies either sequentially or concurrently to achieve the most cost-effective approach throughout the entire life cycle of cleanup at a project site.

Carus is excited to announce our upcoming webinar series, Combined Remedies. We are fortunate to bring to you five industry experts presenting on various combined remedy topics throughout the upcoming months. Join us for one, two, or all of our 30-minute webinars.

 

Combined Remedies Series

Treatment Train for Remediation of NAPL and BTEX in Shallow, Silty Clay Soil

 

Thursday, October 18, 2018
2 pm CDT

Presenter:
Brian D. Symons, P.E., Senior Technology Manager, Foth Infrastructure & Environment LLC

Summary:
The Site in Davenport, IA is a petroleum fueling facility. Previous investigations of the site revealed that shallow groundwater (4 to 15 ft below ground) in a silty clay aquifer contained BTEX above the Iowa DNR regulatory standards for soil and groundwater. This presentation will introduce Site remediation efforts completed to date and present the benefits realized by evaluating and implementing a treatment train of technologies at the site: free product recovery, hydrogen peroxide injection, air sparge/soil vapor extraction, Oxygen BioChem (OBC™) injection, and vacuum-enhanced recovery.

Groundwater analytical results indicated that the OBC™ injection remedy is working, but rapid BTEX reductions will be hard to achieve based on the low permeability of the aquifer and limited to no preferential pathways. However, given the aquifer conditions, mass removal through sulfate-enhanced anaerobic reductive biodegradation is possibly higher than any other in-situ technology would be able to achieve.

Biography:
Brian Symons has 32 years of civil and environmental engineering experience in hazardous waste site  remediation; treatment technologies (especially thermal treatment alternatives); “innovative” treatment technologies; negotiations with USEPA and state, county, and local regulatory agencies; litigation support and technical consulting.  His career started in the laboratory in 1985 as an engineer supporting treatability studies in development of regulatory guidance.  He has evaluated engineering feasibility, prepared detailed engineering designs and specifications for environmental remediation including innovative design, computing, and field methods.  Most recently, Brian has been working as a Senior Technology Manager mentoring other environmental professionals and organizing corporate and project technical efforts.

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Combined Remedies Series

VOC and Hexavalent Chromium Site Successfully Treated With Combined Remedies

November 1, 2018
2 pm CDT

Presenter:
Mr. Bruce Bruso, Environmental Services, Inc.

Summary:

In the 1950s and 60s, the property at 3033 West Walnut Street was being utilized as plating operation for Electro-coatings.  Following shut down of operations, the soils within the area of the operation were found to be contaminated with Hexavalent Chrome and chlorinated VOCs (e.g., PCE, TCE, etc.).  Results of a site characterization indicated approximately 14,400 tons of impacted soil to a depth of 40 feet.  VOC contaminated soils were expected to be less than 7,700 ppm.

The Wisconsin Department of Natural Resources (WDNR) elected to remediate the site under a publicly funded approach.  Two separate bid options were evaluated: 1) Treat metals in-place, Excavate and remove VOC soils as hazardous and incinerate; 2) Treat metals soils in-place and perform in situ hot-air treatment on VOC soils to lower/ eliminate contamination levels to meet a non-hazardous classification for off-site disposal.  In order to meet the State’s treatment level, site soils had to be treated to less than 5 mg/l TCLP, Leachable Chrome, 14 ppm for PCE and 5 ppm for TCE.  Bid option 2 was selected due to cost savings.

Biography:

Mr. Bruce Bruso is President & CEO of CBA Environmental Services, Inc. Bruce earned his B.S. in Environmental Engineering and maintains several certifications such as Certified Hazardous Materials, Hazardous Materials Response Team, Certified EMT, PA Sewage Enforcement, and more. He has over 25 years’ experience developing and implementing technology to improve the efficiency of the power generation industry and the performance of the environmental services industry. During Bruce’s Senior Project Manager experience, he managed four Superfund sites including Pennsylvania’s first recorded Government Remedial Action (State Superfund) cleanup. Bruce has developed numerous written Standard Operating Procedures (SOP’s) for chemical spill response and crisis management for General Industry, U.S. Army, U.S. Air Force, Department of Corrections and PA State Police.

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Combined Remedies Series

In Situ Chemical Oxidation of PCE in an Urban Setting Using Sodium Permanganate and a Surfactant for the Source Areas and Permanganate for the Dissolved Plume

December 6, 2018
2 pm CDT

Presenters:
Mr. Karnam Ramanand, Brown and Caldwell & Mr. Kevin Dyson, Brown and Caldwell

Summary:

Groundwater and soil at a one-third acre urban location (Site) is impacted with tetrachloroethene (PCE) and there are multiple lines of evidence indicating the likely presence of dense non-aqueous phase liquid (DNAPL). The Site is surrounded with commercial businesses and residences and therefore safety was a significant concern while implementing remediation. The primary health threat posed by the Site has been the detection of elevated levels of PCE in the indoor air of adjacent commercial buildings caused by the vapor intrusion pathway. The remedial objectives for the Site are to reduce PCE concentrations in soil and groundwater and eliminate the threat posed by vapor intrusion. The remedy selected was in situ chemical oxidation (ISCO) treatment using sodium permanganate (NaMnO4) and a surfactant in the source areas, and NaMnO4 only for the dissolved plume.

As part of the pre-design investigation; 1) the permanganate native oxidant demand (PNOD) was calculated, 2) a treatability study was conducted to confirm NaMnO4 effectiveness on PCE and to screen and select an ideal surfactant, and 3) a clean water pilot test was performed to determine the aquifer’s capacity to accept injection water. Full-scale design consists of three rounds of injections with the first injections delivering approximately 51,000 pounds (lbs.) of NaMnO4 (40% strength) and 2,000 lbs. of surfactant (35% strength) into the soils and groundwater in the summer of 2017. Approximately 44,000 gallons of 5% to 20% NaMnO4 and surfactant were delivered into the groundwater through 108 Geoprobe®-driven injection points. The injections were carried out safely with no ISCO breakouts to the ground surface, utilities or basements of adjacent buildings. The distribution of NaMnO4 in groundwater as monitored by a colorimeter or visual field kit revealed adequate distribution and that oxidant had dispersed (as planned) under several impacted buildings via migration with groundwater.

The first round of oxidant injections revealed promising results. Before the injections, 12 of the 17 monitoring wells sampled exceeded the site cleanup standard of 50 μg/L for PCE. Following 7 months of injections, PCE exceedance was limited to two of these 17 wells. At 10 months post-injection, a slight rebound was observed and the number of wells with PCE exceedance increased to four. The overall decrease in PCE concentrations in groundwater across the Site has coincided with a significant decrease in the vapor concentrations (monitored as part of sub-slab depressurization system), thus helping to meet the key objective of mitigating the vapor intrusion concerns. A second injection event was conducted in the summer of 2018 and these results are being reviewed for presentation. It is anticipated that a total of three rounds of injections will be required to remediate the Site.

Biographies:

Karnam Ramanand is a Managing Scientist at Brown and Caldwell. His focus last 24 years has been on the areas of in situ remediation including chemical oxidation, chemical reduction, and bioremediation, emerging contaminants, subsurface microbiology, biofiltration, and industrial water treatment chemistry. Karnam has a PhD from Central Rice Research Institute in India in Soil Science and Microbiology and worked as a post-doctoral fellow at University of Oklahoma. He has published over 35 papers and reviewed articles for journals. Working with New Jersey DEP, Karnam authored the technical guidance document “In Situ Remediation: Design Considerations and Performance Monitoring” published in 2017. As a member of the ITRC's team, he is currently learning and working on the technical document "Optimizing In Situ Remediation Performance and Injection Strategies."

 

With over 20 years of design-construct remediation experience, Kevin leads the Remediation Design-Construct business at BC and combines his real-world design and construction implementation experience with a vast network of civil and environmental engineers, scientists and geologists. Kevin has delivered projects ranging from hazardous/non-hazardous soil excavation and disposal, dewatering and ground water treatment, soil vapor extraction and air sparging, in-situ chemical oxidation and reduction, enhanced bioremediation and thermal remediation to innovative delivery techniques such as hydraulic, pneumatic and permeability enhancement fracturing programs.

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RemRXTM Controlled Oxidant Release Polymers

November 15, 2018
2pm CST 

Presenter:
Dr. Alexis Wells Carpenter, AxNano, LLC

Summary:

AxNano, LLC develops advanced material technologies for the environmental industry.  RemRxTM products are focused on new amendments for surface and groundwater remediation.  This patented technology decreases cost while increasing contaminant removal - restoring our water resources. Specifically, AxNano is commercializing RemRxTM CRP, a controlled release product which can deliver sustained doses of oxidants directly into contaminated zones. Through the elimination of contaminant rebounding, which plagues a majority of remediation projects, sustained delivery gives lower remediation project cost and  faster site closure.  To expedite product acceptance and future sales channels, AxNano is developing strategic teaming opportunities with established entities in the environmental remediation space.  This webinar will provide information on this new class of ISCO amendments, feasibility testing, and status of product development.

Biography:

Dr. Carpenter has a Ph.D. in Chemistry from UNC-Chapel Hill where her dissertation focused on manipulating particle formulations for controlled drug delivery, and two-year post-doctoral experience in the Superfund Research Center and Department of Environmental Engineering at Duke University developing zero-valent iron technologies for in situ remediation and enhanced wastewater treatment. Dr. Carpenter has 10 years’ experience in design and synthesis of nanomaterials, with 5 years’ experience specific to environmental applications. Dr. Carpenter joined AxNano in 2015 and has served as Research Scientist and PI on multiple programs. Dr. Carpenter manages AxNano’s RemRxTM  product development and application support.

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