With the legalization of marijuana, some black-market growers are abandoning their illegal cannabis grow operations. Grow ops, often set up in rented properties, can leave a mess for landlords to clean up. Many of these properties are also put up for sale and then become the responsibility of the homebuyer. Identifying a grow-op is often

5 interesting things about EMF (Electromagnetic Fields): There are actually 5 different types of “EMF” that are commonly tested in buildings: low frequency magnetic fields (https://healthybuildingscience.com/2013/10/23/magnetic-fields-emf-consulting/) low frequency electric fields “dirty electricity” or “high-voltage transients” or “electrical noise” radio frequency (RF) radiation alpha, beta and gamma ionizing radiation Each of the above types of radiation

Dirty Electricity from LEDs Many folks interested high fidelity sound systems or low-EMF environments want to minimize electromagnetic interference (AKA: EMI, High-Voltage Transients, Electrical Noise, and Dirty Electricity) from lighting systems. Compact fluorescent lightbulbs (CFLs) – the curly pig tail variety with some mercury in them – are notoriously “dirty” and create significant EMI. As the

Air Quality Problems in the EPA’s San Francisco LEED EBOM Building IAQ Issues in a LEED Building Part ONE At the end of February 2016, NBC ran a segment investigating whether the EPA region 9 building, at 75 Hawthorne Street in downtown San Francisco, was a Sick Building. All answers pointed to yes. In the

During one of my many presentations on Building Enclosure Commissioning to architecture firms, I had a question from a concerned architect that I think echoes the concern in many professionals’ minds about mold. The architect in question was wondering if there is any way to guarantee “on paper” that mold will never occur in an

House Plants Can Contribute to Healthier Indoor Environments We spend about 90% of our time indoors. While inside, we are exposed to a variety of indoor air pollutants. Reducing or removing these pollutants and creating an optimal indoor environment is important to our health and well- being. House plants reduce VOCs and are an easy

WELL BUILDING STANDARD – How to apply to any project There is a new green certification in town. It is called the WELL Building Standard and it targets the ways in which buildings can enhance occupant health. Indicative of the increasing emphasis on how work areas are designed (i.e., Google, Facebook, Air Bnb, Linkedin), the

LEEDv4 IAQ Testing Requirements Industrial hygienists across the US have been watching the USGBC as they’ve updated the Indoor Air Quality (IAQ) Testing Credit for Post-Construction. LEEDv4 IAQ Testing requirements have changed since LEEDv2009. Many health and healthy building advocates hoped they would lower the allowable levels of formaldehyde, but due to industry uproar that did

Design as Therapy In the world of building we have control over what comes into contact with our senses. What we see, hear, smell & feel can all be addressed during the design of the building. For the most part these sensory cues are perceived subconsciously and exist in the background. But there are some

BECx provides Energy Efficient Building and Savings For Facility Managers Building Enclosure (or Envelope) Commissioning (BECx for short) originated in Canada in the 80’s and came to the US in the 90’s. The General Services Administration and the US Army were amongst the early adopters. They started commissioning enclosures on their building projects in 2006. Since