Archive for the ‘What’s Hot’ Category

Large-scale Engineered Phytoremediation Project Completed

Tuesday, July 22nd, 2014

TEA, Inc. recently implemented a large-scale Engineered_PhytoremediationSM system at an active industrial site.  Phytoremediation was selected as the preferred remedial strategy to prevent migration of elevated mercury concentrations in groundwater into a nearby water body.  The objective of the Engineered_PhytoremediationSM system is to influence the existing hydraulic gradient of shallow groundwater using evapotranspiration by selected plant species in order to maintain potentiometric flow toward the south, away from the adjacent water body.  The area of concern is a former landfill that was previously capped to eliminate contaminant exposure from soils beneath the cap, and to control rainwater recharge and surface run-off.  The Engineered_PhytoremediationSM system consists of 271 TreeWell® units installed directly through the cap over a one acre area.  By using the TreeWell® system, the designers minimized the impact to the landfill’s protective cap while eliminating the possibility of rainwater percolation.  Two different plant species (Salt Bush and Afghan Pine) were selected for use in the system based upon results of a phytoremediation pilot study performed at the site.  Eleven new monitoring wells were installed which, in addition to seven existing monitoring wells, will  provide the necessary monitoring well network to evaluate the hydraulic influence the Engineered_PhytoremediationSM system will have on the site groundwater gradient.  Much of the installation was performed at night due to the extreme heat during the summer months.

For more information on TEA’s Engineered_PhytoremediationSM program, please contact Ron Gestler at rgestler@teainconline.com or 925-207-9452.

Installation of Engineered-Phytoremediation system.

Installation of Engineered-Phytoremediation system.

Installation of TreeWell® unit directly through the landfill cap.

Installation of TreeWell® unit directly through the landfill cap.

Newly completed Engineered-Phytoremediation system (August, 2013).

Newly completed Engineered-Phytoremediation system (August, 2013).

Plants thrive at Engineered-Phytoremediation system (May, 2014).

Plants thrive at Engineered-Phytoremediation system (May, 2014).

 

 

35,000 Gallons of EZVI Injected at Industrial Site

Thursday, July 17th, 2014

 

Emulsified zero-valent iron (EZVI) was selected as the cost effective remedy to destroy a long-term, continuing source area for groundwater PCE contamination at an active manufacturing chemical facility in the Western US.  In March 2014, a subsurface investigation, led by TEA, Inc. (TEA), was conducted in order to delineate the locations of source material.  The EZVI volume and vertical target zones were designed using the data from a membrane interface probe (MIP) survey.  Based on site specific information, a custom formulation of the EZVI was manufactured by RemQuest. The subsurface delivery was strategically targeted within the 9000 sq ft source area at depths ranging between 30-50 feet below ground surface (bgs).  The EZVI was injected by TEA’s strategic partner and specialty injection contractor, Innovative Environmental Technologies, Inc. (IET), according to the agency approved TEA remedial plan.  Temporary injection points were completed using a direct push Geo-probe to position IET’s proprietary injection tip at the designed depths.  The drilling service was provided by EMCON, a TEA subsidiary company.  Performance monitoring is being conducted to validate the success of the EZVI remedy.  This project exemplifies TEA’s collaborative approach that utilized a team of environmental technology experts and highly specialized service providers to eliminate this potential environmental liability for the client.

 

Have questions about EZVI or interested in learning more?  Contact Dr. Greg Booth, for more information at 225-767-3880 or gbooth@teainconline.com.

 

 

PCB Remediation Technology Gaining Momentum

Friday, March 16th, 2012

The environmental industry is very well aware of the challenges involved in the remediation of polychlorinated biphenyls (PCBs). NASA and Scientific Specialists, Inc. (located at the University of Central Florida) have developed a revolutionary product to extract and destroy PCBs in-situ (in place). This patented product is called activated metal treatment system or AMTS, and was first developed to treat painted surfaces. TEA, Inc. was the first licensee of this technology and is currently performing several laboratory studies for clients to determine efficacy, as well as developing new formulations to treat a variety of impacted media. Although there is no silver bullet to eliminate the PCB problem nationwide, AMTS is proving to be a viable technology providing outstanding results. Laboratory and field-scale tests have demonstrated the removal of > 94% of total PCBs from various industrial paints within three weeks.

Please contact Dr. Greg Booth for additional information (gbooth@teainconline.com or 225-767-3880).

New Products Division

Tuesday, May 24th, 2011

RemQuest is the newly established products division of TEA, Inc. The goal in forming RemQuest was to focus on the marketing of our current products and the research and development of new remediation products that fit with our commitment to green and sustainable remediation. RemQuest offers a variety of products focused on the destruction of environmental contaminants in place (in-situ), utilizing natural processes and eliminating the need for contaminant transfer in obtaining remediation goals.

The objective at RemQuest is to seamlessly interact with environmental consultants and other end users of remediation products to enhance their remediation capabilities and optimize the effectiveness of their remedial designs.

Click on this link (www.remquestonline.com) to visit the RemQuest website for additional information, or contact Mr. Wes Theriot at 225-767-3819 or wtheriot@remquestonline.com.

EnPhySys Implemented at Active Chemical Plant

Tuesday, May 24th, 2011

TEA, Inc. recently implemented an ENGINEERED_PHYTOREMEDIATIONSM pilot study (EnPhySysSM) at an active chemical facility on the West coast. The plantation consists of 80 trees, including 13 different species. The purpose of the pilot study is to evaluate and select a species of tree(s) to hydraulically control groundwater at the site. The trees were planted in closed bottom TreeWell® units with metered water supplies. The observed transpiration rates and viability of the various species of trees will be used to design a full scale ENGINEERED_PHYTOREMEDIATIONSM  system to affect hydraulic control of groundwater. TEA, Inc. is one of the few remediation companies able to fully implement an ENGINEERED_PHYTOREMEDIATIONSM project at an active industrial/chemical facility. The TEA, Inc. team was able to meet the stringent safety and health requirements set forth by OSHA, Cal OSHA and the client.

To learn more about the benefits of EnPhySysSM, please contact Mr. Wes Theriot at 225-767-3819 or wtheriot@teainconline.com.