The Corps provides an appeal process for its wetland delineation reviews. After completing our delineation of the wetlands at Port Sonoma in southern Sonoma County, Corps staff decided that the wetlands which had appeared in the Port’s dredged materials basins should be considered jurisdictional. We had defined these wetlands as non-jurisdictional as the ponds are in active use. Taking jurisdiction over these ponds would have a chilling use on all upland disposal of dredged materials as any disposal would exhibit wetland characteristics within a few weeks of disposal. We appealed the jurisdictional determination and the appeals officer ruled in our favor; the Corps had not provided a reasonable explanation of their decisions in this case.