Renown Health Contractor Work Standard | Page 26
    
 • Negative air machines , when used , must be left running 24 / 7 to maintain negative air in a contained construction area .
 • Containment must be air tight ( as much as possible ) with or without negative air machine to control dust
 • Demolition always requires containment – barriers and filtered exhaust
 • Pulling cable – E . C . U . or equivalent in sensitive ( high risk ) areas
 • Sanding / drywall – need dust collecting HEPA vacuums or wet sanding
 • Flooring – may require containment and air monitoring in sensitive area