MOBILITY OF LEAD LEACHED FROM SHOTGUN PELLETS IN SPODIC SOILS, PINE BARRENS, NJ

The New Jersey Pine Barrens is a nature preserve created to protect water quality in the recharge area of the Kirkwood-Cohansey aquifer. However, shooting ranges in this area could contaminate groundwater with Pb leached from spent shot. Corroded shot were recovered from the O horizon of the acidic haplaquod soil. Samples were taken through the soil profile from a shooting range and an uncontaminated location. Using the sequential extraction method of Tessier et al. (1979), Pb and other trace metals were extracted from the samples in order to determine speciation and distribution with depth in the profile. Pb is associated with the organic and hydrous ferric oxide (HFO) fractions, where it may be biologically available. Thin sections will be examined to interpret soil micromorphology and determine the amount of illuviation and physical translocation of soil materials.