The old Santa Cruz Sentinel building might soon become home of an Internet service provider and environmental group. The Silicon Valley/San Jose Business Journal reports that the new owners of the 44-year-old, 55,000-square-foot building at 207 Church St. are submitting plans to the city to subdivide the building into spaces for at least four tenants. The Sentinel vacated the downtown building in 2007 for an office park in Scotts Valley. Two years later, top management wished they were back downtown again.