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incorporated as mitigation measures fur this project_ <br />Pre -Construction Building Material/Fumishing Formaldehyde Emissions Assessment. <br />This formaldehyde emissions assessment should be used in the environmental review under <br />CEQA to assess the indoor formaldehyde concentrations from the proposed loading of <br />building materials/furnishings, the area -specific formaldehyde emission rate data for <br />building materials/furnishings, and the design minimum outdoor air ventilation rates. This <br />assessment allows the applicant (and the City) to determine before the conclusion of the <br />environmental review process and the building materials/furnishings are specified, <br />purchased, and installed if the total chemical emissions will exceed cancer and non -cancer <br />guidelines, mid if so, allow for changes in the selection of specific material/furnishings <br />andior the design minimum outdoor air ventilations rates such that cancer and non -cancer <br />guidelines are not. exceeded. <br />1.) Defune Indoor Air Ouality Zones. Divide the building into separate indoor air quality <br />zones, (IAQ Zones). IAQ Zones are defined as areas of well -mixed air. Thus, each <br />ventilation system with recirculating air is considered a single zone, and each room or <br />group of rooms where air is not recirculated (e.g. 100%outdoor air) is considered a separate <br />zone. For IAQ Zones with the same construction matenal/fumishings and design minimum <br />outdoor air ventilation rates. (e.g. hotel rooms, apartments, condominiums, etc,) the <br />formaldehyde emission rates need only be assessed for a single IAQ Zone of that type. <br />2.) Calculate MateriallFumishing Loading. For cacti IAQ Zone, determine the building <br />material and furnishing loadings (e.g., mz of matenallm' floor area, units of fumishings/m' <br />floor area) from an inventory of all potential indoor formaldehyde sources, including <br />flooring, ceiling tiles., furnishings, finishes, insulation, sealants, adhesives, and any <br />products constructed with composite wood products containing urea -formaldehyde resins <br />(e.g, plywood, medium density fiberboard, particleboard} <br />3 ) Calculate the Formaldehyde Emission Rate. For each building material, calculate the <br />fomialdehyde emission rate (µg/h) from the product of the area -specific formaldehyde <br />6of19 <br />22 <br />75C-43 <br />