(a) Notwithstanding any other provision of law, any person 18 years of age or over who is convicted of a violation of Section 11380, in addition to the punishment imposed for that conviction, shall receive an additional punishment as follows:

1. (1) If the offense involved phencyclidine (PCP), methamphetamine, lysergic acid diethylamide (LSD), or any analog of these substances and occurred upon the grounds of, or within, a church or synagogue, a playground, a public or private youth center, a child day care facility, or a public swimming pool, during hours in which the facility is open for business, classes, or school-related programs, or at any time when minors are using the facility, the defendant shall, as a full and separately served enhancement to any other enhancement provided in paragraph (3), be punished by imprisonment in the state prison for one year.
2. (2) If the offense involved phencyclidine (PCP), methamphetamine, lysergic acid diethylamide (LSD), or any analog of these substances and occurred upon, or within 1,000 feet of, the grounds of any public or private elementary, vocational, junior high school, or high school, during hours that the school is open for classes or school-related programs, or at any time when minors are using the facility where the offense occurs, the defendant shall, as a full and separately served enhancement to any other enhancement provided in paragraph (3), be punished by imprisonment in the state prison for two years.
3. (3) If the offense involved a minor who is at least four years younger than the defendant, the defendant shall, as a full and separately served enhancement to any other enhancement provided in this subdivision, be punished by imprisonment in the state prison for one, two, or three years, at the discretion of the court.