St Helens2014-04-022014-04-022009-10-13https://hdl.handle.net/1794/1510813 pp. Adopted 2009-10-13. Department of Land Conservation and Development Notice of Adopted AmendmentAnnexation of property owned by the City of St. Helens, which abuts the north side of property owned by the Columbia Health District, a proposed future hospital location. Annexation of City property is necessary for annexation of Health District's to be adjacent to City corporate limits.en-USPublic DomainLand UseAdopted Plan