Join GZA At Battelle 2022
The Twelfth International Conference on Remediation of Chlorinated and Recalcitrant Compounds will be held May 22nd to May 26th, 2022. Here's where you can find and meet GZA!
8:00am to Noon, Sunday May 22nd
This course will present the Interstate Technology and Regulatory Council (ITRC) Optimizing Injection Strategies and In Situ Remediation Performance Technical Regulatory Guidance document as a 4-hour short course. The training will guide remediation practitioners through the design and implementation of successful in situ remedies, how to quickly identify and diagnose poor performance, and the optimization of under-performing remedies. The audience includes state and federal regulators, environmental professionals, and stakeholders.
On display Sunday 6:00pm to Tuesday 1:00pm, with presentations Monday 4:30pm to 6:30pm.
A4. Combined Remedies and Treatment Trains
From 1961 to 1983, a steel fabrication business utilized a sub-grade vapor degreaser in a manufacturing business that was located in a dense industrial/residential neighborhood in Newark, New Jersey. Following facility closure and building demolition in 2003,soil and groundwater was found to be impacted with tetrachloroethene (PCE), trichloroethene (TCE), and their degradation products. Soil, which contained concentrations of TCE and PCE up to 4,080 mg/kg and 36 mg/kg, respectively, were not beyond the property boundary.Groundwater delineation was complex due to TCE and PCE coming onto the site from at least three offsite upgradient or side-gradient sources. Because of this, defining site cleanup goals was challenging.
On display Wednesday 7:00am to Thursday 1:00pm, with presentations Wednesday 4:30pm to 6:30pm.
C10. Climate Resilience and Site Remediation
The Site operated as an aircraft parts manufacturing and metal plating facility (B.H. Aircraft) from approximately 1964 to 2000, at Farmingdale, New York. It included several buildings used for machine shops, acid etching, metal plating, press room, paint spraying, wastewater treatment, and a large network of on-site drywell and leaching pool structures. During the previous investigations VOC contamination was detected in soil, soil gas and groundwater and metal was detected in groundwater. The objective was voluntarily clean-up the Site under the New York State Brownfield Cleanup Program (BCP) for potential tax credits for reimbursements on redevelopment and remediation costs. The full-scale design incorporated sustainable remediation practices through design and construction, and it was completed on a fast track to avail maximum tax credits within the time limit.
Join us for this platform session Wednesday at 2:15 in Primrose D.
Historical chlorinated solvents (cVOC) were released during the period of the mid-1950 through mid-1990’s resulted in contamination of low permeable glacial fluvial and deltaic lobe deposits (fine sand, silt and ¼ to 2” desiccated clays). The cVOC release (TCE = 6- to 10 mg/L) was located on a hydraulic divide which bifurcated the cVOCs into three distinct 200-foot-wide plumes that discharge 3,500 feet downgradient, to adjacent wetland. Given maturity of the plumes, the greatest mass is present in the fine sand unit; however, significant mass was sorbed into the lower permeable units.
To remediate these 3,500-foot-long plumes to meet drinking water quality, would be cost prohibitive. Therefore, a state negotiated remedy was designed to target the removal of those contaminant zones with the greatest mass using chemical oxidants followed by a long-term groundwater MNA program.
On display Wednesday 7:00am to Thursday 1:00pm, with presentations Wednesday 4:30pm to 6:30pm.
D9. Managing Chromium Contaminated Sites.
An industrial facility utilized metal finishing process lines (sulfuric acid, nitric acid and chromic acid) which were located adjacent to a degreaser pit. The process wastewater was directed to historic cypress holding tanks and then a wastewater treatment plant where it was treated with sodium metabisulfate to control oxidation-reduction potential and lime and/or sulfuric acid to control ph. Over 50-years, hexavalent chromium (Cr+6) and cVOC spills/leaks resulted in releases to the subsurface which was located over a hydraulic groundwater divide. This resulted in two bifurcated co-mingled plumes that migrated over 3,000 feet.
On display Wednesday 7:00am to Thursday 1:00pm, with presentations Wednesday 4:30pm to 6:30pm.
E8. In Situ PFAS Treatment Approaches
A municipal fire department trained with Aqueous Film Forming Foams (AFFF) on an elementary school’s sports field, on two separate occasions. An investigation 7 to 13- years later, identified that the soil in one field was impacted with PFAS soil concentrations greater than 500 µg/Kg which was below the applicable direct contact/dermal criteria but exceeded the soil leaching criteria. Groundwater concentrations below the source reported concentration of PFAS at 17,000 ng/L, exceeding the states criteria of 70 ng/L in both the overburden and bedrock. Abutting residential water supply wells were sample and their concentrations were below the 70 ng/L criteria.
Marc Hudock, LSRP
Richard Desrosiers, PG, LEP
