Emily (Ahlemeyer) Pulcher
Staff Chemical Engineer
Burns & McDonnell Engineering Company
Emily is a staff chemical engineer located in St. Louis, Missouri in the Remediation department at Burns & McDonnell. She is a graduate of the Energy, Environmental & Chemical Engineering program at Washington University in St. Louis and a current student in the Environmental Engineering master’s program at Missouri University of Science & Technology. Emily’s professional experience includes remediation system design and operation, statistical analysis, fate and transport evaluations, hydraulic modeling, site investigation, air permitting and emissions studies, and multi-media environmental compliance support. Emily has supported remediation projects evaluating and implementing a variety of treatment approaches, including both in-situ and ex-situ technologies. Treatment technologies have included hydraulic containment, chemical oxidation/reduction, biodegradation, thermal, stabilization, and phytoremediation.
Assessment of Phytoremediation Processes and Vapor Intrusion Evaluation through Urban Tree Species at a Residential Chlorinated VOC Site
A phytoremediation treatability study was conducted to evaluate groundwater plume treatment via phytovolatilization (plant uptake and transpiration of groundwater contamination), phytodegradation (plant uptake and degradation of groundwater contamination), and/or rhizodegradation (microbial contaminant degradation within the soil root zone) within a variety of trees at a site with groundwater impacted by PCE, TCE, and their breakdown products. Tree core samples were collected from over 40 existing mature trees at the site and analyzed for the constituents above. These constituents were detected in tree cores from multiple locations and varying tree species. The treatability study results indicated that the existing trees on-site uptake contaminant mass from both the saturated and vadose zones. This presentation will address sample collection techniques, analytical results, and how these data will be used to assess full-scale remedial alternatives.