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In this webinar we were pleased to have as a special guest speaker Lori E. Riker, P.E., Sr. Project Manager at Benchmark Civil/Environmental Engineering & Geology. Her presentation discussed adapting a remedy to achieve site closure for a challenging, century-old, New York Brownfield site. She was joined by Alana Miller, Northeast District Technical Manager at REGENESIS, who shared how in-situ technologies were adapted for a remedial solution at this site.

Highlights of this free webinar:

  • CVOCs impacting groundwater at a former manufacturing site in New York formed a narrow plume migrating off-site

  • PlumeStop colloidal activated carbon technology applied as a fast and permanent remedy to replace a pump-and-treat system that had operated from 2004-2018

  • Successful site performance data for six sampling events resulted in decommissioning of pump-and-treat system and site regulatory closure from NYSDEC

At a former metals manufacturing facility in Western New York, a narrow CVOC plume was migrating off-site. Over 30 million gallons of CVOC-impacted groundwater were treated between 2004 and 2018 using a pump-and-treat system. Since the site owner was interested in implementing a fast and permanent remedy, an in situ application of PlumeStop colloidal activated carbon (with electron donor, and bioaugmentation substrates) was completed in 2017 by REGENESIS Remediation Services (RRS). Performance monitoring was conducted through June 2021. Following the application, CVOC concentrations were reduced from as high as 500 micrograms per liter (µg/L) at baseline to below one ug/L in the source area and downgradient performance monitoring wells for six consecutive sampling events. Based on these results, the pump-and-treat system was decommissioned, and the site was granted closure by the NYSDEC in August 2021, after nearly 20 years of investigation and remediation.

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About the Presenters:

REGENESIS Webinar with special guest presenter Lori Riker, P.E.
Sr. Project Manager, Benchmark Civil/Environmental Engineering & Geology, PLLC
Lori Riker has over 27 years of environmental and civil engineering experience in environmental consulting focusing on industrial regulatory compliance and permitting as well as remedial investigation, design, and implementation under various state and federal cleanup programs, with an emphasis on Brownfield Cleanup Program sites. Ms. Riker has been with Benchmark for 19 years starting as a Project Engineer. Prior to that, she worked at Malcolm Pirnie in Orchard Park, NY and Environ Corporation in Princeton, NJ. Ms. Riker has been a registered Professional Engineer in the State of NY since 1999.

REGENESIS Remediation Solutions Alana Miller
Northeast District Manager, REGENESIS
Alana Miller has four years of experience in the environmental industry and holds a Bachelor of Science in Civil and Environmental Engineering from Princeton University. Her experience includes field and laboratory research with the Princeton Environmental Institute where she studied methane emissions from abandoned oil and gas wells. Alana also worked as an environmental consultant for LANGAN on brownfield projects across New York City. In her current position as Northeast District Manager for REGENESIS, Alana works with environmental consulting and engineering firms to develop remedial approaches by offering design, application, and performance review services for in-situ groundwater and soil remediation.