Laserfiche WebLink
from the product certifications of CDPH, BIFA, and other certification programs can be <br />used as an initial estimate of the formaldehyde emission rate. <br />If the actual area -specific emission rates of a building material or furnishing is needed <br />(i.e. the initial emission rates estimates from the product certifications are higher than <br />desired), then that data can be acquired by requesting from the manufacturer the complete <br />chemical emission rate test report. For instance if the complete CDPH emission test <br />report is requested for a CDHP certified product, that report will provide the actual area - <br />specific emission rates for not only the 35 specific VOCs, including formaldehyde, listed <br />in Table 4-1 of the CDPH test method (CDPH, 2017), but also all of the cancer and <br />reproductive/developmental chemicals listed in the California Proposition 65 Safe Harbor <br />Levels (OEHHA, 2017a), all of the toxic air contaminants (TACs) in the California Air <br />Resources Board Toxic Air Contamination List (CARB, 2011), and the 10 chemicals <br />with the greatest emission rates. <br />Alternatively, a sample of the building material or furnishing can be submitted to a <br />chemical emission rate testing laboratory, such as Berkeley Analytical Laboratory <br />(https://berkeleyanalytical.com), to measure the formaldehyde emission rate. <br />4.) Calculate the Total Formaldehyde Emission Rate. For each IAQ Zone, calculate the <br />total formaldehyde emission rate (i.e. µg/h) from the individual formaldehyde emission <br />rates from each of the building material/furnishings as determined in Step 3. <br />5.) Calculate the Indoor Formaldehyde Concentration. For each IAQ Zone, calculate the <br />indoor formaldehyde concentration (µg/m3) from Equation 1 by dividing the total <br />formaldehyde emission rates (i.e. µg/h) as determined in Step 4, by the design minimum <br />outdoor air ventilation rate (in 3/h) for the IAQ Zone. <br />Etotal <br />Cin = (Equation 1) <br />Qoa <br />where: <br />Cin = indoor formaldehyde concentration (µg/m3) <br />Etotal = total formaldehyde emission rate (µg/h) into the IAQ Zone. <br />