Shortly before Christmas 2000, in cooperation with the Baltimore Orioles, The Maryland Stadium Authority replaced the playing field at Camden Yards. While in the course of laying new drainage pipes, petroleum-contaminated soils were encountered. ALWI was retained and rapidly responded with an investigation and immediate corrective action to address newfound petroleum contamination of both soils and groundwater beneath the playing field and adjacent seating structures. It was necessary to complete the work expeditiously before the Holiday, so that the new playing field could be sodded before the onset of cold winter conditions.
On the day following discovery of the release, we used direct-push soil borings to delineate the horizontal and vertical extent of residual contamination remaining from demolition of previous paint shop that existed on site prior to ballpark construction a decade earlier. Our OSHA-trained field geologists logged, collected, screened and sampled soil and water matrices for laboratory analysis. Our regulatory affairs managers simultaneously negotiated accelerated site characterization and closure protocols with City of Baltimore and Maryland Department of the Environment officials.
On Christmas Eve, we remained deployed to coordinate the simultaneous work of drillers, geologists, structural engineers, excavators and analytical laboratories in excavating a temporary sump and performing a short-duration, high-volume, rapid-response pump-and-treat groundwater remediation program. Before New Years, we represented the owner in manifesting the excavated soils for disposal and in securing final regulatory closure for the site and the groundwater remediation project that had been completed. When the 2001 baseball season opened and to this day, the new playing field displays none of the vegetative stress that is the hallmark of petroleum contamination in the root zone, partially because of the impermeable membrane installed below the field at our recommendation.