Good idea to document determination. - Particularly if you conclude you are not subject to the rule. - Not a rule requirement. See Section 2.4 of SPCC guidance document. http://www.epa.gov/emergencies/docs/oil/spcc/guidance/2_Applicability.pdf.
The age of consent is eighteen. With parental consent, parties can marry at age seventeen with the exception that if one party does not have a parent who resides in the state and one party has been a resident in Oregon for at least six months, then no permission is necessary.
In 1880, the age of consent was set at 10 or 12 in most states, with the exception of Delaware where it was 7. The ages of consent were raised across the U.S. during the late 19th century and the early 20th century. By 1920 ages of consent generally rose to 16-18 and small adjustments to these laws occurred after 1920.