Subject to paragraphs (2) and (3) of this subsection, a member may retire with a normal service retirement allowance if, on or before the date of retirement, the member: has at least 25 years of eligibility service; is at least 62 years old; or is at least 60 years old and has transferred to the Local Fire and Police System from the Employees’ Retirement System. To retire under this subsection, a member shall complete and submit a written application to the Board of Trustees on the form that the Board of Trustees provides stating the date when the member desires to retire. A member may not retire before the first day of the month after employment ends. Except as provided in subsections (c) and (d) of this section, on retirement under this section, a member is entitled to receive a normal service retirement allowance that equals the number of years of the member’s creditable service multiplied by: 1% of the member’s average final compensation that is not in excess of the Social Security integration level; and 5% of the member’s average final compensation that exceeds the Social Security integration level. This subsection applies to a member: who has not transferred from the Employees’ Retirement System; and whose employer does not contribute to Social Security. On retirement under this section, a member is entitled to receive a normal service retirement allowance that equals the number of years of the member’s creditable service multiplied by 1.5% of the member’s average final compensation. This subsection applies to a member who has transferred from the Employees’ Retirement System. On retirement under this section, a member is entitled to receive a normal service retirement allowance that equals: 2% of the member’s average final compensation multiplied by each year of the member’s first 30 years of creditable service; and 1% of the member’s average final compensation multiplied by each year of creditable service in excess of 30 years.