We deem it controlling on this issue in the present case. Port of Willapa Harbor v. Nelson Crab Oyster Co., 15 Wn.2d 515, 131 P.2d 155 (1942), cited by appellant in support of his argument, is distinguishable on its facts. [2] Appellant next asserts that, even if respondents are not estopped from asserting the defense of ultra vires in this case, appellant should recover on the theory of an implied or quasi contract.