Contractors working on the high school renovation and expansion project are expected to begin demolishing the Dunn Wing the week of July 15, according to town manager Wayne P. Marquis. The razing is anticipated to take about 30 days. “Having the demolition completed before the students get back to school is an important development,” Marquis said. “We weren’t certain that would happen. But we’ve been assured that not only will it be demolished by the week of Aug. 15, but the materials will be removed from the site.” Contractors are able to proceed with the demolition because renovation of the academic wing and construction of the new three-story science wing are now substantially completed. On June 28, the building inspector issued a certificate of occupancy for both facilities. The Dunn Wing had been serving as swing space while the work was ongoing. Marquis said workers were expected to begin removing asbestos from the Dunn Wing last week, setting the stage for the demolition. Contractors this summer will also be renovating and expanding the auditorium.