This report presents the results of a study that reviewed problems associated with the removal of lead-based bridge paints. The overall objectives of the project were: (1) to identify the severity of toxicity and pollution resulting from the removal of lead-based paint during bridge cleaning operations; and (2) to evaluate available techniques for removal, containment, and recovery of lead-based bridge paints and recommend improved techniques. Fulfillment of the first objective was accomplished by determining the environmental pollution and toxicity associated with the removal and disposal of lead paint; by identifying the environmental regulations that pertain to the removal of lead paint from bridges; and by describing the environmental test methods for lead paint residues. The second objective was met through technical and cost evaluations of techniques that have been used to remove, contain, and recover the debris generated during the removal of paints from bridges and other steel structures, concepts for improvements of existing techniques, and evaluation of new techniques under development. (Author).
Abstract