user: Question: When baltimore county, howard are represented, what's the first elected when the committee is environmental matters (vice-chair)?
Columns: ['District', 'Counties Represented', 'Delegate', 'Party', 'First Elected', 'Committee']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['09.1 9A', 'Howard', 'Bates, Gail H. Gail H. Bates', 'Republican', 2002.0, 'Appropriations']
SQL:

assistant: SELECT "First Elected" FROM "Table" WHERE "Counties Represented" = 'baltimore county, howard' AND "Committee" = 'environmental matters (vice-chair)';