(503) 704-6013 dgorman@hevanet.com

Mr. Gorman conducted all hydrologic and hydraulic modeling and grading design to restore wetlands and create off channel fish habitat within the excavation prism of a large scale remediation of petroleum contaminated soil.  He modeled peak flows from various return interval storms, designed low flow and high flow channels through the wetland to convey design flows, designed a storm drainage conveyance system, and designed the finished grade to provide wetland hydrology, support wetland vegetation, and provide rearing habitat for juvenile salmonids.