ABSTRACT

This chapter focuses on some individual sites selected from among several dozen wood preserving plant investigations performed since the effective date of the Resource Conservation and Recovery Act regulations. All plants have groundwater contamination that has moved in the downgradient direction of the slope of the water table that covers horizontal areas between one to 13 times the area of the source. Some plants having significant contamination were selected for discussion based on the availability of information, type of preservative, and other factors such as extent of contamination, and soil type. The degree of the problem, however, has ranged from localized conditions at a single monitor well indicating one or more dissolved constituents of a preservative to relatively large areas and to significant depths of free preservative contamination. The contours indicate a water table that mounds in the area of well W-7 which was thought to be caused by the water levels in the ditch and pond 1.