ATON was retained by Green Street St. Louis, a local commercial real estate development company with deep roots in the development of underutilized and environmentally impaired property, to aid in the remediation of two Brownfield sites in St. Louis. The combined properties were machining facilities which housed multiple in-ground hydraulic lifts and USTs, petroleum product warehouses and rail spurs. With the end use in mind, the remediation was managed to meet those goals. The project included the conducting environmental site assessments, hazardous building inspections, the development of a Comprehensive Remedial Action Plan to address all contamination onsite including specifications for asbestos and lead-based paint abatement, the design/construction of innovative engineered barriers, oversight during hazardous materials abatement and final confirmation sampling. Historical data indicated soil and groundwater contamination above Missouri Department of Natural Resources (MDNR) Missouri Risk-Based Corrective Action (MRBCA) Default Target Levels (DTLs) and Tier I Residential and Non-Residential Risk-Based Target Levels (RBTLs). The primary contaminants of concern identified at the properties consisted of asbestos, lead-based paint, lead and arsenic in soil, and total petroleum hydrocarbons, volatile organic compounds and semi-volatiles organic compounds. Also, there were some waste piles onsite which contained asbestos. Two underground storage tanks were also removed. These properties were ultimately developed into a recreation facility, a dog-walking bar and a local brewery with residential units included. With ATON's expertise in finding effective remedial solutions, Green Street has been recognized by the City of St. Louis with multiple development awards. This development represents a major accomplishment in getting Brownfield sites back into productive reuse for the community and its stakeholders.
