Specifications include, but are not limited to: HVAC System Cleaning Specification and Requirements The Vendor shall be responsible for the removal of visible surface contaminants and deposits from within the HVAC system in strict accordance with these specifications. The vendor shall exercise special care to prevent any damage to the equipment, electrical motors of systems, ceiling tiles, and the building from water and/or chemicals resulting from the cleaning process. HVAC System Inspections and Site Preparations Before the commencement of any cleaning work, the HVAC system cleaning Vendor shall perform a visual inspection of the HVAC system to determine appropriate methods, tools, and equipment required to satisfactorily complete this project. Damaged system components found during the inspection shall be documented and brought to the attention of BCSO. The vendor shall ensure that all dampers are marked to identify the original position before commencing work. All components will be returned to their original setting upon completion of the cleaning process. Damper repair or replacement is not a part of this contract. Site Evaluation and Preparations The vendor shall conduct a site evaluation and establish a specific, coordinated plan that details how each area of the building will be protected during the various phases of the project. Duct System Cleaning 1. Vendors shall clean all components of the air conveyance system including all interior surfaces of the facility's air distribution system that service conditioned spaces and/or occupied zones. This includes the entire heating, air-conditioning, and ventilation system from the points where air enters the system, to the final point of discharge before entering the conditioned environment. The return air grilles, return air ducts to the AHU, the interior surfaces of the AHU, mixing boxes, coil compartments, condensate drain pans, supply air ducts, fans, fan housings, fan blades, turning vanes, filters, filter housings, reheat coils, cooling coils, flexible ductwork, and supply diffusers are all considered part of the HVAC system. To properly remove lint, hair, fungi, dirt, and other foreign materials and residues from the HVAC system. 2. The cleaning procedures shall be accompanied using specialized equipment, (i.e., high efficiency vacuum system utilizing HEPA filters, high-pressure washers, duct brushes, etc.), as required. Special attention shall be taken while cleaning to prevent high levels of microbial contaminants from becoming airborne and disseminated into occupied areas. All effluent shall be removed and disposed of by the Vendor. HEPA filtration with 99.97% collection efficiency for 0.3-micron size (or greater) particles shall be used. When the collection equipment is exhausted outside the building, mechanical cleaning operations shall be undertaken only with particulate collection equipment in place, including adequate filtration to contain debris removed from the HVAC system. When the particulate collection equipment is exhausted outside the building, precautions shall be taken to locate the equipment downwind and away from all air intakes and other points of entry into the building. All interior equipment, furniture, files, and material shall be adequately covered and protected as necessary to prevent damage. Any damaged fixtures, equipment, or systems shall be repaired, if possible, or replaced with equal equipment at no cost to BCSO. 3. The vendor shall use materials, chemicals, and equipment that are in their original containers. No open or used containers will be allowed. 4. Vendor shall during decontamination, maintain certified respirators, safety glasses, and clothing according to the OSHA respiratory protection standards. 5. Vendor shall be responsible for unclogging and thoroughly cleaning the HVAC duct system components including reheat coils, supply registers, dampers, VAV boxes, turning vanes, etc., fouled by dust and other contaminants
