In May 2009, Northern Environmental merged with Bonestroo and now operates under the Bonestroo brand. For additional details on the firm, please see Bonestroo's profile. Northern Environmental, founded during 1988, was a privately owned environmental consulting and engineering firm headquartered in Mequon, Wisconsin, with branch offices throughout the Upper Midwest. After quickly establishing ourselves as a leading environmental and engineering firm, we developed the reputation of being a client-friendly, full-service environmental consulting and engineering firm servicing the entire Upper Midwest.