Fig. 1. Breakthrough curves for a conservative tracer (Cl^–) and LSB, ADB, and PMB colloids eluted from intact (a) Maury, (b) Woolper, and (c) Bruno soil monoliths (C, effluent concentration; C_o, influent concentration; ADB, aerobically digested biosolid; LSB, lime-stabilized biosolid; PMB, poultry manure biosolid).