Tonkawa Tribe of Oklahoma – Tonkawa, OK – HELP WANTED The Tonkawa Tribe of Oklahoma is soliciting for qualified engineering professionals for an Advance Assistance Project for riverbank stabilization and erosion control. The Scope of work will include field observations, lab testing of soil samples, engineering analyses, a scour analysis, and a current survey resulting in a topographic map, and design documents along with cost estimates and specifications. We are advertising for three contracts; Engineering Study, Survey…