This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is not otherwise associated with Lawrence Berkeley National Laboratory, unless specifically identified as a Berkeley Lab staff member.
After getting a Ph.D. in astrophysics from City University of New York, Dr. Wallace spent 27 years in research at the US EPA. Dr. Wallace's main focus was determining human exposure to air pollution He played a key role in the TEAM Studies (Total Exposure Assessment Methodology) which involved using personal monitors in large scale field studies in multiple US cities. Dr. Wallace's work was able to show that indoor sources of VOCs provided 2-5 times the exposure due to outdoor sources. Dr. Wallace's work with the TEAM studies also identified the personal cloud, or Pigpen Effect, which increases personal exposure of PM10 by 50% above either indoor or outdoor concentrations.
From about 1996, Dr. Wallace became interested in ultrafine particles (UFPs). Starting with measurements in his own home under an EPA internal grant, Dr. Wallace continued, after retirement, to study UFPs as a Guest Researcher at NIST under Dr. Andrew Persily. Their work indicated the importance of cooking as a source of UFPs. Dr. Wallace is also a consultant to Environment Canada and Health Canada, helping with PM (including UFP) field studies in multiple Canadian cities under the direction of Amanda Wheeler.
Having been born in San Francisco and with a daughter and two grandsons there, Dr. Wallace has recently returned to the area and looks forward to sharing experiences with friends at Stanford and perhaps LBL!