The graph model for conflict resolution is employed to study systematically the bargaining that took place during the appeal of an environmental control order. Uniroyal Chemicals Ltd. appealed the order issued following the discovery of significant levels of the carcinogen NDMA in the water supply of the town of Elmira, Canada. NDMA was a by-product of Uniroyal's production process, but direct evidence of discharges from these processes into the aquifer was lacking. These environmental negotiations were analyzed as a strategic conflict using the decision support system GMCR. The formal modeling and analysis were carried out while the negotiations were in process; the results of the study can now be compared to the actual outcome.<<ETX>>