After sitting vacant and unfinished for more than 13 years, demolition crews began preliminary site work April 27 to tear down the Berkman Plaza II high-rise Downtown. Steve Pece, president of demolition contractor Pece of Mind Environmental Inc., said his crews have “boots on the ground” to demolish the 18-story structure through its contract with the property’s likely developer, Jacksonville Riverfront Revitalization LLC. Pece said April 27 that workers won’t start taking down the shell structure for three to four weeks as crews put in erosion control measures, expand fencing and clean up loose debris at the site floor by floor.