MIAMI — Herndon, Va.-based Cambridge Development Group will break ground on a $47 million regional testing laboratory for the Drug Enforcement Agency in February. The Government Services Administration has signed a 20-year lease for the property, which will be located in the Beacon Lakes Business Park in Miami. DEA South Fl., a joint venture between Galaxy Investments and Halle Enterprises, has already purchased 9 acres of land for the development. Gary McGlynn of NorthMarq Capital arranged construction financing for the project through M&T Bank. Construction is expected to take 15 months.