Geosyntec’s “virtual risk assessment” reduced the amount of soil needing to be excavated at the site, resulting in a potential savings to CSXT of more than $1M.
Brownfields Site Remediation and Redevelopment at a Former Railyard Facility
Add Brownfields Site Remediation and Redevelopment at a Former Railyard Facility Project to QuikQual
At the 97-acre Lakeland yard, the Florida Department of Environmental Protection (FDEP) had informed CSX Transportation (CSXT) that the FDEP would issue a Consent Order unless CSXT submitted a Supplemental Contamination Assessment Report (CAR) by December 2003 that addressed soil and groundwater contamination from metals (primarily arsenic) and petroleum hydrocarbons throughout the site. CSXT retained Geosyntec in October 2003 to review technical documents from seven previous environmental investigations, develop a coherent site assessment strategy, and prepare a Supplemental CAR. The yard is a listed Florida Brownfields site with high redevelopment potential. In May 2004, CSXT requested Geosyntec to develop remedial strategies and cost estimates for potential redevelopment of the property.
Geosyntec’s Scope of Services
Within 45 days of being retained, Geosyntec was able to analyze nearly 17 years of field and laboratory data, develop a field sampling program in support of a previously completed CAR (prepared by others), and prepare the Supplemental CAR. The submittal allowed CSXT to avoid the Consent Order. In addition, during review of the site data, we observed a close correlation between the elevated metals and turbidity levels, and recommended to CSXT that the wells be carefully re-developed and re-sampled. This effort reduced the number of wells where metals concentrations were substantially above background from 18 to two, and eliminated the need for active remediation.
In late 2005, Geosyntec completed a "virtual risk assessment" where quantities of soil containing arsenic levels greater than 3 times the FDEP’s Soil Cleanup Target Levels (SCTLs) were hypothetically removed and replaced with clean soil. We then calculated a new site-wide average soil concentration, using the 95 percent Upper Confidence Limit (UCL), that was less than the current SCTL.
Geosyntec’s "virtual risk assessment" reduced the amount of soil that would need to be excavated at the site, resulting in a potential savings to CSXT of more than $1M.