Construction Site Chemical Recovery

Several dozen bottles of liquid bromine were uncovered during initial site grading at a new shopping center development. The bottles of bromine had been buried on the site by a previous landowner, which operated a swimming pool supply store. In addition to the bromine, several other pool related chemicals and debris were also buried.

The initial emergency response conducted by SES included regulatory notification, preparation of a site safety plan, site reconnaissance, and exploratory trenching to determine the vertical and lateral extent of buried debris and chemical storage containers. A high-capacity air handling system was installed to maintain cross ventilation through the "hot zone". The chemical containers were then separated from the debris and over-packed for disposal. All work was conducted in Level B PPE.

Natural Gas Vapor Release at Elementary School

A broken natural gas feed line beneath an elementary school resulted in the accumulation of gas vapor beneath and within the school building. School Board officials contracted SES to remediate the situation.

SES cored through the floor of the building and obtained soil vapor samples to map the natural gas extent. The results of this work were used to design a remediation system to extract natural gas vapor from beneath the school building. The remediation system included nine extraction wells, and 13 monitor ports to measure subgrade vacuum influence and natural gas levels. Complete site remediation was accomplished in 3 days, at which point students and staff were allowed to re-enter the building.

Regional Petroleum Spill Response

SES manages emergency spill response programs for several regional petroleum marketers. Emergency spill response programs include:

• Spill Prevention Control and Countermeasure (SPCC) plan development;
   
• Regulatory agency notification/ interaction;
   
• Coordination of containment and recovery of fuel product;
   
• Report documentation, and;
   
•  Follow-up procedures.