55 gal steel drum reported by resident via Lauderdale co EMA. Drum located behind waterfront residence on shorline of TN river near confluence of TN & Elk Rivers. Drum exposed while water level low. EPA OSC sampled drum. Appears to be mineral spirits or other stripper type liquid. Approx. 2/3 rds full. Sample to be analyzed and eventually disposed of through R4 ERRS contractor. ADEM assited in site investigation and will help coordinate future ERRS site visit for drum pickup.