Or. Rev. Stat. § 308A.465
(1) Land that is receiving conservation easement special assessment shall be inspected by a holder periodically to ensure that:
(2)
(4) The county assessor shall disqualify the land from conservation easement special assessment upon:
(5) If, pursuant to subsection (4)(g) of this section, the county assessor disqualifies land for conservation easement special assessment upon the act of recording a subdivision plat, the land may requalify for conservation easement special assessment upon:
(6) Upon disqualification, the county assessor shall compute an additional tax under ORS 308A.700 to 308A.733. [2007 c.809 §7]
ADDITIONAL TAXES, PROCEDURES APPLICABLE TO CERTAIN LAND SPECIAL ASSESSMENT PROGRAMS