Indoor Air Quality Studies
|Vent-Free Gas Logs
Thirty-five homes were equipped with new vent-free gas logs for a user
satisfaction survey. Ten were chosen for an extensive IAQ evaluation of
particles, CO, CO2, NO, NO2, moisture, temperature
increases and selected air toxics.
|California Residential Indoor Air Quality Study |
Approximately 300 homes were randomly selected throughout the state of
California using utility customer databases. 48-hour indoor and outdoor
concentrations were collected for CO, NO2, benzene, toluene,
formaldehyde, radon and methane. Data were also collected for air exchange
rates, appliance use patterns and housing characteristics. Several new
monitoring methodologies were evaluated. Results were used to assist gas
utilities in preventing IAQ problems and in developing exposure models.
Nitrogen Dioxide Residential Indoor
Air Quality and Exposure Studies
A series of studies were conducted over several years for the Southern
California Gas Company and the Gas Research Institute. Phase I characterized
the indoor NO2 concentrations of 600 homes in Southern California.
Passive samplers were deployed in the kitchen, bedroom and outside of each
home for three one-week periods. Phase II was a detailed follow-up effort to
determine the impact of gas fired wall and floor furnaces in 500 additional
homes. Phase III involved personal monitoring for over 600 individuals during
a 1-year period. Results were used to evaluate regulatory programs and the
role of residential gas appliances on indoor air quality.