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identify those materials/furnishings prior to the completion of the City's CEQA review <br />and project approval, that have formaldehyde emission rates that contribute to indoor <br />concentrations that exceed cancer and non -cancer guidelines, so that alternative lower <br />emitting materials/furnishings may be selected and/or higher minimum outdoor air <br />ventilation rates can be increased to achieve acceptable indoor concentrations and <br />incorporated as mitigation measures for this project. <br />Pre -Construction Building Material/Furnishing Formaldehyde Emissions Assessment <br />This formaldehyde emissions assessment should be used in the environmental review <br />under CEQA to assess the indoor formaldehyde concentrations from the proposed <br />loading of building materials/furnishings, the area -specific formaldehyde emission rate <br />data for building materials/furnishings, and the design minimum outdoor air ventilation <br />rates. This assessment allows the applicant (and the City) to determine, before the <br />conclusion of the environmental review process and the building materials/furnishings <br />are specified, purchased, and installed, if the total chemical emissions will exceed cancer <br />and non -cancer guidelines, and if so, allow for changes in the selection of specific <br />material/furnishings and/or the design minimum outdoor air ventilations rates such that <br />cancer and non -cancer guidelines are not exceeded. <br />1.) Define Indoor Air Qualily 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 <br />separate zone. For IAQ Zones with the same construction material/furnishings and design <br />minimum outdoor air ventilation rates. (e.g. hotel rooms, apartments, condominiums, <br />etc.) the formaldehyde emission rates need only be assessed for a single IAQ Zone of that <br />type. <br />2.) Calculate Material/Furnishing Loading. For each IAQ Zone, determine the building <br />material and furnishing loadings (e.g., in of material/m2 floor area, units of <br />furnishings/m2 floor area) from an inventory of all potential indoor formaldehyde <br />sources, including flooring, ceiling tiles, furnishings, finishes, insulation, sealants, <br />MOM <br />