A nonprofit organization may make an election that is effective on the day on which the Secretary determines that the organization is an employing unit by submitting to the Secretary a written notice of the election not later than 30 days after the determination. A nonprofit organization that makes an election under this subsection shall continue to be liable for reimbursement payments: for at least 1 year; and until it submits a termination of the election under subsection (b) of this section. After termination of an election a nonprofit organization shall continue to be liable for the amount of regular and work sharing benefits and 50% of extended benefits that are attributable to base period wages paid during the period of its election. To terminate an election under this section, an employer shall submit to the Secretary a written notice of termination at least 30 days before the beginning of the calendar year for which the termination first shall be effective. A nonprofit organization that has been paying contributions may make an election by submitting to the Secretary a written notice of the election at least 30 days before the beginning of a calendar year. A nonprofit organization that makes an election under this subsection shall continue to be liable for reimbursement payments: for at least 2 calendar years; and until it submits a termination of the election under paragraph (3) of this subsection. To terminate an election under this section, a nonprofit organization shall submit to the Secretary a written notice of termination at least 30 days before the beginning of the calendar year for which the termination first shall be effective. The earned rating record of a nonprofit organization that elects to make reimbursement payments shall continue to be charged for regular and work sharing benefits and 50% of extended benefits that are attributable to base period wages paid during the period in which it paid contributions. The Secretary: for good cause may extend the period within which a nonprofit organization may submit a notice of election or notice of termination of election; and may allow an election to be retroactive. In accordance with regulations adopted to carry out this title, the Secretary shall notify each nonprofit organization of any determination that the Secretary makes about: its status as an employing unit; or the effective date of an election or termination of election. A determination by the Secretary under subsection (f) of this section is final and not subject to appeal unless, within 30 days after the determination is sent to the employer, a nonprofit organization requests a review determination in accordance with § 8–604 of this subtitle.