DBCP residue studies in soil and well water from two south carolina peach orchards

Soil samples collected from a peach orchard near a well containing 1 pg kg^?1 1,2-dibromo-3chloropropane (DBCP) (contaminated) and from a peach orchard with a well containing 0.1 pg kg^?1 DBCP (uncontaminated) contained less than 0.1 gg kg^?1 and 0.5 μg kg^?1 DBCP residue, respectively. Soil profiles did not explain the presence of DBCP in the contaminated well. However, a possible spill of DBCP approximately 30 m from the contaminated well may have contaminated the well water. Soil samples taken at the site of the possible spill contained high concentrations of DBCP in the upper meter and at 6.1 m where the water table was encountered. The data indicate that the water contamination resulted from this spill of DBCP and not from normal agricultural use.