The Augusta Planning Board has unanimously approved construction of the city’s first mosque. The Islamic Society of Greater Augusta, a nonprofit group founded in 2009, won approval from the board Tuesday to build a 1,230-square-foot mosque, with seating for 70 people and parking for 21 cars, on a dead-end street on the city’s east side. More than 60 people attended the meeting. No one spoke against the measure, which won support from the city’s Roman Catholic, Unitarian, and Jewish clergy. Islamic Society treasurer Jeremy Wadleigh told the Kennebec Journal that the active Muslim community in the area includes about 15 families.