How to Improve the Air Quality in Your Home and Car During Wildfire Season   The smoke season over the past four years has kept us very busy measuring and mitigating wildfire smoke in the air we breathe. On top of California’s extended drought, this year has also delivered extreme heat and massive lighting storms

How HVAC Systems Help Reduce Potential COVID-19 Exposure: As the economy begins to reopen and we return to our buildings, what role do building ventilation systems play in reducing our risks of infection? Infection via inhalation or contact with droplets is well understood at this point. Another potential exposure route being discussed is exposure via

With growing concern about the spread of Coronavirus (COVID-19), we at HBS (Healthy Building Science) want our clients and community to know we are taking precautionary measures to ensure their safety, health, and well-being as a top priority.  In addition to our standard Health and Safety Program at HBS, our staff has been instructed to

Fire Proof Building The past few summers I’ve been caught somewhat off guard by how vulnerable I feel when dry winds are blowing and smoke fills the sky. I remember very clearly being on the roof, with a mask on, cleaning out gutters and small piles of leaves. As an industrial hygienist, I know harm

Air Quality Index (AQI) and You During the 2018 Paradise Fire smoke wave, many in the Bay Area obsessively checked online for air quality information and updates. Here is an overview of a handful of real-time air quality websites I found helpful and how they compare. Keep in mind that climate change plus newer and cheaper

DIY Box Fan Filter & Air Quality Experiment Here in San Francisco and surrounding areas kids are stuck indoors during this smoke wave caused by our wild fires with little or no air filtration. In San Francisco the school buildings are older and are not setup to have building wide air filtration. Nor can cash-strapped

5 Interesting Things About EMF (Electromagnetic Fields): There are 5 different types of “EMF” that are commonly tested in buildings: low frequency magnetic fields low frequency electric fields “dirty electricity”, “high-voltage transients” or “electrical noise” radio frequency (RF) radiation alpha, beta and gamma ionizing radiation Each of the above types of radiation originates from unique

6 Tips for Water Quality and Water Testing: Source matters – One of the most important variables in water quality is the source. Does the water come from an open water source like a lake or reservoir? Is it treated and delivered to a site via the municipal or county water service? Is it a spring

Home Lead Testing There are DIY home lead test kits available online and in some hardware stores, but the more reliable way of evaluating a home and its contents for lead risks is to hire a lead inspector. A lead inspector may utilize bulk sampling, which is destructive and will leave holes in materials, or

Bay Area Air Quality Among Worst In Nation As an industrial hygienist it came as a surprise that the American Lung Association recently ranked Bay Area air quality among the worst in nation for air pollution and particulates. Unhealthy levels of pollution were found in numerous parts of the country, but the San Francisco Bay