 In August 2016, work began on a Time-Critical Removal Action in the Kalamazoo River upstream of the Otsego Township Dam and the M-89 bridge, which was completed in August 2018.Georgia-Pacific submitted the draft Area 4 site investigation report in Sept. 2017 - Area 4 is the Kalamazoo River between the Otsego Township Dam and Trowbridge Dam.This document shows where and how soil and sediment sampling was conducted in Area 4 of the river.