Fig. 3. Concentration of 1,2-dibromo-3-chloropropane (DBCP) (minimum detection limit [MDL] at 0.01 µg L^-1) in wells sampled in three different townships, in (A) T/R/S-14S22E23, (B) T/R/S-13S21E16, and (C) T/R/S-15S23E26. Wells were sampled after agricultural use was suspended in 1979