Episode 648: Eugenia Mirica, PhD - Franco Seif, PE - Joe Spurgeon, PhD - Sampling Surface Char in Residential Properties
Posted: Fri Dec 10, 2021 8:15 pm
Show Resources:
Show Discussion:
12:01:31 From Derrick A. Denis : Wildfire smoke residue is a "hot" topic. Very punny Joe.
12:03:42 From Lukas Jenkins (Edifice Rx) : Aliquot
12:03:57 From Lukas Jenkins (Edifice Rx) : Composite
12:03:59 From scott vanetten : composite
12:04:28 From cliff zlotnik : Trivia: According to the US EPA 2014a: US EPA 2016, name the sampling method where several samples are physically mixed together into a larger sample?
12:05:04 From cliff zlotnik : derrick denis was first correct answer, please send ypur contact info to czlotnik@cs.com
12:20:09 From Derrick A. Denis : Char is partially burned plant material with visible cellular properties.
12:20:42 From Derrick A. Denis : Soot is "charcoal" or high carbon burned material.
12:21:01 From Derrick A. Denis : Ash is salt left over after complete combustion of carbon.
12:34:56 From Terry Sopher : “ash & soot not detected…” Is that perhaps due to: (1) time since last wildfire; (2) sampling method not as appropriate for soot or ash as for char?
12:46:53 From Terry Sopher : Re variance in INTERIOR char between houses & within any 1 house & also vis a vis exterior char: Aren’t there numerous important variables that could account for variances? e.g., whether house had attic ventilation; whether house interior was ‘sealed’ during fire;
12:48:50 From Terry Sopher : oops, not finished re variables: ‘relative leakiness’ of house; type of HVAC system & filtration system or absence of filtration; time elapsed between fire termination & sampling; etc etc?
12:51:12 From Terry Sopher : What are studies such as these used for: insurance claims? assessment of health impacts; need for remediation type, extent etc?
12:59:56 From Terry Sopher : Are there studies re to what extent char, ash, soot get airborne & stay airborne due to a person moving around inside a sample location, opening/closing doors, etc? What about sampling in/on surfaces that are more ‘hidden’, out-of=the-way, etc?
13:08:37 From Terry Sopher : Basic Question: why does it matter—of what importance—to know whether residue is char, ash or soot?
13:19:22 From Debra : Yay Terry!
13:19:33 From Terry Sopher : Thanks all for this session
12:01:31 From Derrick A. Denis : Wildfire smoke residue is a "hot" topic. Very punny Joe.
12:03:42 From Lukas Jenkins (Edifice Rx) : Aliquot
12:03:57 From Lukas Jenkins (Edifice Rx) : Composite
12:03:59 From scott vanetten : composite
12:04:28 From cliff zlotnik : Trivia: According to the US EPA 2014a: US EPA 2016, name the sampling method where several samples are physically mixed together into a larger sample?
12:05:04 From cliff zlotnik : derrick denis was first correct answer, please send ypur contact info to czlotnik@cs.com
12:20:09 From Derrick A. Denis : Char is partially burned plant material with visible cellular properties.
12:20:42 From Derrick A. Denis : Soot is "charcoal" or high carbon burned material.
12:21:01 From Derrick A. Denis : Ash is salt left over after complete combustion of carbon.
12:34:56 From Terry Sopher : “ash & soot not detected…” Is that perhaps due to: (1) time since last wildfire; (2) sampling method not as appropriate for soot or ash as for char?
12:46:53 From Terry Sopher : Re variance in INTERIOR char between houses & within any 1 house & also vis a vis exterior char: Aren’t there numerous important variables that could account for variances? e.g., whether house had attic ventilation; whether house interior was ‘sealed’ during fire;
12:48:50 From Terry Sopher : oops, not finished re variables: ‘relative leakiness’ of house; type of HVAC system & filtration system or absence of filtration; time elapsed between fire termination & sampling; etc etc?
12:51:12 From Terry Sopher : What are studies such as these used for: insurance claims? assessment of health impacts; need for remediation type, extent etc?
12:59:56 From Terry Sopher : Are there studies re to what extent char, ash, soot get airborne & stay airborne due to a person moving around inside a sample location, opening/closing doors, etc? What about sampling in/on surfaces that are more ‘hidden’, out-of=the-way, etc?
13:08:37 From Terry Sopher : Basic Question: why does it matter—of what importance—to know whether residue is char, ash or soot?
13:19:22 From Debra : Yay Terry!
13:19:33 From Terry Sopher : Thanks all for this session