SELECT MAX(first_elected) FROM table_name_37 WHERE counties_represented = "baltimore county, howard" AND committee = "environmental matters (vice-chair)"
Ketika Baltimore County, Howard diwakili, apa yang pertama kali terpilih ketika Komite adalah masalah lingkungan (Wakil Ketua)?
CREATE TABLE table_name_37 (first_elected INTEGER, counties_represented VARCHAR, committee VARCHAR)