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 all but four states, the age of majority is 18 years; in Alaska and Nebraska, the age of majority is 19 years, and in Pennsylvania and Mississippi the age of majority is 21 years. Although the age of majority in Mississippi is 21 years, this state does allow an 18 year old to provide consent for his or her own health care. Laws that affect the minor's right to consent to medical care have been developed under the precedent of parental autonomy.