Wednesday, June 29th • 2:00pm (EST)
Presenter: Chase Gerbig, Senior Engineer
Contaminated historic fill presents a unique risk to anyone acquiring, developing, or liable for a contaminated property. Specifically, it may not be identified in ASTM International Phase I environmental site assessments. Due to the disperse nature of contaminated historic fill, it may not be identified in preliminary site investigations either. When encountered unexpectedly, this type of fill can be more costly to address than other “traditional” sources of environmental contamination.
What is contaminated historic fill? In short, it’s dirty dirt. Generally speaking, contaminated historic fill is a catchall term used to describe contaminated material deposited to raise the elevation at a site. The material was contaminated at the source of the fill; therefore, the contaminants in the fill are unrelated to activity at the site where it was deposited.
Real estate development and remediation projects, particularly in cities that have industrial legacies, frequently encounter contaminated historic fill and have to manage the material. When contaminated fill is identified ahead of time and strategies are in place to manage the material, it can be handled rather painlessly. However, when the fill shows up as a surprise over the course of unrelated site work, it can have far ranging financial and schedule implications.
Through several case studies, this webinar will discuss types of contaminated historic fill and how to identify its sources, typical contaminants, and most importantly, strategies Roux Associates has used to help clients manage risks and costs associated with contaminated historic fill.