Dan Pesce, interim director of the Waterbury Development Corp., said he expects to begin work at some point this year. If that happens, he’s confident the field could be ready for use next spring. The state gave Waterbury $2 million to clean away the rubble, leaving behind a Brobdingnagian concrete foundation at the close of the cleanup in 2016. In 2018, the Connecticut State Bond Commission agreed to borrow $3 million so the city could build a ballfield on the site. Pesce said hopes to begin advertising for a contractor in early June and launch construction sometime this construction season. He expects construction to move swiftly given the relatively basic work involved.