09:00:22 From  Dana DELEON  to  Everyone:
	Yes!
09:00:25 From  Angela Tagnani  to  Everyone:
	Good Morning!
09:01:18 From  Dev Murali  to  Everyone:
	Good afternoon
09:02:37 From  Kelly Francisco  to  Everyone:
	Good afternoon from New Jersey!
09:06:39 From  Marielle Larson (she/her) UW PSI  to  Everyone:
	Here's the website that Andy just mentioned, which includes the recording and slides from the symposium in January
	https://www.pugetsoundinstitute.org/about/cross-program-contaminant-working-group/
09:13:59 From  Jillian Adair, EPAR3  to  Everyone:
	I am not seeing the presentation. Is that just on my end?
	09:14:09 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
		Replying to "I am not seeing the ..."
	
		I can see it.
	09:14:18 From  Annie Simpson (she/her), WA State Dept of Ecology  to  Everyone:
		I can see it as well.
	09:14:47 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
		I do not see the speaker’s cursor/pointer though.
09:16:15 From  Greg Allen, EPA Chesapeake Bay Program  to  Everyone:
	DC DOEE is doing amazing work on PCB remediation planning in the Anacostia. Dev Murali and George Onyullo with lots of help from Uphal Gosh at UMD Baltimore
09:18:35 From  Marielle Larson (she/her) UW PSI  to  Everyone:
	We'll have time for questions after each case study, so please feel free to add questions to the Q&A in the meantime
09:19:31 From  Nadine Benoit, OMECP  to  Marielle Larson (she/her) UW PSI(Direct Message):
	I have to leave shortly, but this look super interesting. looking forward to the slides
09:20:58 From  Marielle Larson (she/her) UW PSI  to  Nadine Benoit, OMECP(Direct Message):
	Thanks for joining Nadine, I'll let you know once the slides are posted to the website
09:21:33 From  Kevin Parrett  to  Everyone:
	What are typical PCB concentrations in suspended sediments from LBC?
09:21:58 From  James West  to  Everyone:
	Can anyone provide a ref. for the 2022 USFWS small fish studies? Or the range of [PCB] in mummichogs/killifish?
09:23:08 From  Andrew James (UW)  to  Everyone:
	Similar request for a reference for the UMBC passive sampler study.
09:24:03 From  Dev Murali  to  Everyone:
	https://restoretheanacostiariver.com/library
09:25:48 From  Dev Murali  to  Everyone:
	Look for the fishable folder to access 2022 USFWS report and passive sampler for the UMBC report and Tributary Study for the USGS SIR 2016 report
09:30:16 From  Kevin Parrett  to  Everyone:
	How are NDs handled in calculating total PCBs with this forensics graph?
09:32:39 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Have you looked at building materials in the area as a possible source of PCBs?
09:34:23 From  Debra Williston  to  Everyone:
	We find metal recyclers are source of PCBs.
09:38:17 From  James West  to  Everyone:
	Agree with Debra Williston -- some of the greatest [PCB] we see in fish are near car crusher/scrapyards
09:39:09 From  Dev Murali  to  Everyone:
	In the tributaries, there was a 20-fold difference in mean total PCBs in BK and a 15-fold difference in MC. Mean total PCBs were highest in LB1 and LB2 (both near source areas under investigation) and lower at LB1.5 (remote from these areas). Mean concentrations at LB1 ranged from 313 to 1110 parts per billion (ppb) wet weight, varying between species and sampling year. PCB homologs were enriched in di-, tr-, and tetra-chlorinated congeners in LB fish, suggesting current releases of PCBs. Lower total mean PCB concentrations (47.9 to 76.5 ppb) were detected in NW and NE forage fish. These findings are consistent with those from investigations of suspended sediments, passive samplers, and freshwater mussels. Together these provide a weight of evidence implicating LB as a continuing source of PCBs to the tidal Anacostia.
	
	In the mainstem Anacostia, mean total PCBs were lowest in collections from upstream locations BL and DC, ranging from 29.3 to 119 ppb. The remaining Anacostia collections (except Pepco Cove) ha
09:40:48 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	Anybody know what processed material is causing such high concentrations at these kinds of facilities?  Is it mainlysomething processed in the past or ongoing processing?
09:41:17 From  Kevin Parrett  to  Everyone:
	Are these concentrations bedded sediment or suspended sediment?
09:44:10 From  Dev Murali  to  Everyone:
	Concentrations of PCBs, PAHs, and chlorinated pesticides in streamwater are presented for stormflow and low-flow conditions. Average concentrations (in stormflow and low-flow samples) of total PCBs (sum of all congeners, including coelutions) are 5.9 micrograms per kilogram (μg/kg) for NEB, 6.6 μg/kg for NWB, 130 μg/kg for LBDC, 34 μg/kg for Watts Branch, and 69 μg/kg for Hickey Run. Average concentrations of total PAHs (tPAH) (total of nonalkylated and alkylated species) are 2,000 μg/kg for NEB, 3,300 μg/kg for NWB, 2,200 μg/kg for LBDC, 2,400 μg/kg for Watts Branch, and 18,000 μg/kg for Hickey Run. tPAH concentrations amongthe ungaged streams were highest in Nash Run (5,500 μg/kg); concentrations in the other ungaged streams were less than (<) 700 μg/kg.
09:44:21 From  Dev Murali  to  Everyone:
	Loads of tPCB, tPAH (total of alkylated and nonalkylated forms), and pesticides were estimated for each stream by multiplying average contaminant concentrations by the respective sediment loads. Total PCB loads for 2017 were estimated to be 820 grams (g) with 8 percent (60 g) from NEB, 12 percent (95 g) from NWB, 75 percent (590 g) from LBDC, 3 percent (25 g) from Watts Branch, and 2.5 percent (19 g) from Hickey Run. PCB toxicity totaled 3.8×10−3 μg/kg, with the largest contribution (47 percent) derived from LBDC. Total PAH loads (sum of alkylated and nonalkylated forms) for 2017 were estimated to be 89,000 g, with 23 percent (20,000 g) from NEB, 59 percent (52,000 g) from NWB, 11 percent (9,800 g) from LBDC, 2 percent (1,400 g) from Watts Branch, and 6 percent (5,200 g) from Hickey Run. These results indicate that the largest contributor (75 percent) of PCBs to the Anacostia River is LBDC, although it contributes only 15 percent of the sediment and its basin area represents only 10 percent of the area of the
09:51:21 From  Andrew James (UW)  to  Everyone:
	Can you say more about the process water - is water used to clean/rinse the used metals for recycling? or dust control? or some other part of the recycling process?
09:53:09 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Nice work
09:53:21 From  Marielle Larson (she/her) UW PSI  to  Everyone:
	Feel free to continue adding questions to the Q&A. You can also raise your hand to ask a question live
09:57:49 From  jeff stern  to  Everyone:
	Working theory on PCB sources at recyclers is much from electrical switches and wire coatings
10:02:19 From  Kirsti Lipphardt  to  Everyone:
	Amazing work!
10:05:36 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	@Timothy - MDE might have looked at this point of grain size with Conowingo Dam sediments.
10:06:52 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	Replying to "@Timothy - MDE might..."
	
	I’m not sure if it came together in a report, but I know some of the sediments were tested for index properties as well as POPs.
10:07:17 From  Andrew James (UW)  to  Everyone:
	Great presentation. Thank you.
10:16:42 From  Kevin Parrett  to  Everyone:
	Nice set of figures.
10:18:50 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	most of the info Jay is presenting on fish is here: https://www.sfei.org/sites/default/files/biblio_files/2019%20Sport%20Fish%20Report%20-%20FINAL.pdf
10:20:40 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	here is a report on the stormwater recon: https://www.sfei.org/sites/default/files/biblio_files/WY2020%20POC%20Report_FINAL.pdf
10:28:48 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	...and here is a 2019 report on the work around San Leandro Bay: https://www.sfei.org/sites/default/files/biblio_files/San%20Leandro%20Bay%20PCBs%20Phase%203%20Final%20Report%20_0.pdf
10:34:04 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	OK, last one (I think) - this is the report for the area Jay is talking about now (Steinberger Slough): https://www.sfei.org/sites/default/files/biblio_files/Steinberger%20Slough%20Final%20Report%20with%20Cover.pdf
10:41:24 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	I lied: here is the report on the congener/aroclor analysis: https://www.sfei.org/sites/default/files/biblio_files/Advanced%20Data%20Analysis%20PCB%20Congener%20Profiles%20Final%2010-04-19%20Clean%20%281%29.pdf
10:42:07 From  Brandee Era-Miller  to  Everyone:
	How are you moving forward with the GE site?  I'm curious about the regulatory processes.
10:42:57 From  Marielle Larson (she/her) UW PSI  to  Everyone:
	Feel free to raise your hand to ask a question or add them to the Q&A
10:43:57 From  Kevin Parrett  to  Everyone:
	At Portland Harbor Superfund Site, relatively high A1242 was found in sediment near the Schnitzer auto shredding facility.
10:46:33 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Seattle Public Utilities has conducted two pilot studies using University of Washington odor detection dogs for source tracing PCBs.
10:49:59 From  Kat Ridolfi, Integral Consulting  to  Everyone:
	I want to hear more about the dogs!
10:50:37 From  Brandee Era-Miller  to  Everyone:
	bera461@ecy.wa.gov
10:51:03 From  Brandee Era-Miller  to  Everyone:
	Feel free to contact me, Brandee Era-Miller, regarding the PCB sniffing dog.
10:52:01 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Michael.jeffers@seattle.gov we can supply links to our pilot project reports using the detection dogs
10:52:43 From  Lisa Rodenburg  to  Everyone:
	PMF for dummies video:
10:52:45 From  Lisa Rodenburg  to  Everyone:
	https://www.youtube.com/watch?v=ZOdvnZnLVPQ
10:53:49 From  Jay Davis  to  Everyone:
	Thanks Brandee and Michael - Alicia has talked to some folks up there, but it would be good to hear about as many experiences with the method as we can.  I’ll give her your info.
10:55:47 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	https://seattlegov.sharepoint.com/sites/SPU_HUB/SitePages/Watch-part-of-a-BBC-documentary-featuring-SPU's-PCB-detection-work.aspx?source=%2Fsites%2FSPU_HUB&promotedState=1
11:02:05 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Sorry about the permission requirement for the BBC clip. 
	 It was part of the Discovery channel presentation of the Earthshot Prize.  Some really good information is available here at web site at UW https://www.washington.edu/boundless/conservation-canines/
11:12:33 From  Heidi Siegelbaum  to  Everyone:
	https://www.law.cornell.edu/wex/daubert_standard
11:31:50 From  Jacob Henry, P.G. SF Bay Regional Water Quality Control Board  to  Everyone:
	asbestos
11:40:46 From  Debra Williston  to  Everyone:
	Here is a link to King County study where we looked at silicone tubing effects on PCB congener concentrations from sampling in stream water: https://kingcounty.gov/~/media/services/environment/wastewater/duwamish-waterway/source-control/misc/GR-PCB-Equipment-Blank-Report-Feb2018.ashx?la=en
11:46:05 From  jeff stern  to  Everyone:
	Great as always Lisa.
11:46:29 From  Jennifer Lanksbury  to  Everyone:
	Yes, that was a super informative talk! Thanks.
11:51:27 From  Suman Paudel  to  Everyone:
	Thanks Lisa! Great Presentation.
11:51:36 From  Brian Church  to  Everyone:
	Thanks Lisa!
12:00:19 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	 Seattle Public Utilities has been able to locate PCBs by odor detection by trained inspectors.  We have found dozens of buildings and spills by odor recognition.
12:00:56 From  Brandee Era-Miller  to  Everyone:
	Can you put in the reference for the "Boone" paper on congener metabolism?
12:00:57 From  Jenee Colton  to  Everyone:
	Yes, that was in the Green/Duwamish watershed.
12:02:13 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	The stormwater programs in Bay Area have developed a protocol for screening old industrial areas for PCBs source areas.  It involves a combination of looking at historical use of parcels to screen for those where PCBs were likely used, also looking at what data are available, right-of-way surveys using google earth street view, and more steps too.  I can share this if you get in touch with me: Richard.looker@waterboards.ca.gov. I am hoping that we can get a PCBs sniffing dog in the mix too because we can def improve our efforts in this.
12:02:48 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	Replying to "Can you put in the r..."
	
	Might be the 1988 Boon paper “The possible role of metabolism in determining patterns of PCB congeners in species from the Dutch Wadden Sea”
12:03:16 From  Brandee Era-Miller  to  Everyone:
	Replying to "Can you put in the r..."
	
	Thanks!
12:05:26 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	Replying to "Can you put in the r..."
	
	There is a 1987 paper out there also.
12:06:42 From  Lisa Rodenburg  to  Everyone:
	Replying to "Can you put in the r..."
	
	Boon sent me a spreadsheet he made that categorizes all 209 congeners by metabolizability.  Happy to share.
12:07:22 From  Andrew James  to  Everyone:
	Replying to "Can you put in the r..."
	
	I would love to see this spreadsheet.
12:07:27 From  Lisa Rodenburg  to  Everyone:
	DRBC has on the of best data sets I have ever seen!  Go DRBC!
12:07:44 From  Debra Williston  to  Everyone:
	This might be helpful. From WA State Dept of Ecology report on PCBs in building materials: https://ecology.wa.gov/Regulations-Permits/Guidance-technical-assistance/Dangerous-waste-guidance/Common-dangerous-waste/Construction-and-demolition/PCBs-in-buildings
12:08:17 From  Aimee Kinney  to  Everyone:
	New PCB requirements under consideration for Washington 2024 stormwater general permits can be viewed at https://fortress.wa.gov/ecy/ezshare/wq/permits/MS4GP.PrelimDraftPCB.pdf
12:08:28 From  Jay Davis  to  Everyone:
	Replying to "Can you put in the r..."
	
	A fun unpublished part of my dissertation compared congener profiles in cormorants and fish. The cormorants metabolized congeners that lacked chlorination in adjacent meta-para positions.
12:10:40 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	Replying to "Can you put in the r..."
	
	@Jay Davis Never too late to publish, Jay. 🙂
12:14:00 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	Replying to "Can you put in the r..."
	
	we keep Jay waaaaay too busy for him to find any time for that!
12:14:08 From  Nadine Benoit  to  Everyone:
	as Dev says - focusing on ongoing/locally controlable sources
12:14:19 From  Kelly Francisco (she/her) Rutgers Univ., EnviroData Analytics  to  Everyone:
	Re: Dev’s comments -This is one of the strengths of the PMF work in coordination with sediment transport models to explain what fraction can be cleaned vs. what might be an ongoing sources.
12:14:58 From  Jay Davis  to  Everyone:
	Replying to "Can you put in the r..."
	
	So true
12:16:40 From  Nadine Benoit  to  Everyone:
	Re: metal waste - oil grit separation that doesn't go into waterway
12:18:52 From  Greg Allen, EPA Chesapeake Bay Program  to  Everyone:
	MDE Guidance to MS4s in a PCB TMDL with controllable waste load allocations requires track down of sources. Includes a stepwise method. We will add to the resource page for today's symposium.
12:20:17 From  Nadine Benoit  to  Everyone:
	what is the cancer risk for odour inspectors?
12:21:39 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	smells minty, right Michael?
12:22:29 From  Curtis DeGasperi  to  Everyone:
	I'm also curious about air monitoring which hasn't been mentioned. I suspect such programs exist....thinking about air as a pathway to human exposure https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9802026/
12:22:52 From  Andrew James  to  Everyone:
	Web site 
	https://www.pugetsoundinstitute.org/about/cross-program-contaminant-working-group/
12:24:07 From  Debra Williston  to  Marielle Larson (she/her) UW PSI(Direct Message):
	The first poll question would been great to have more than one choice.
12:24:13 From  Richard Looker (SF Bay Water Board)  to  Everyone:
	i chose "case studies" as most valuable, but i would say the Q&A and links to resources and chat content was also super valuable and important.
12:24:21 From  Debra Williston  to  Marielle Larson (she/her) UW PSI(Direct Message):
	The chat was also helpful for resources and info
12:25:55 From  William Hobbs  to  Everyone:
	The Washington State Department of Ecology is hosting a training for the regulating community that are interested in learning about the How to Find and Address PCBs in Building Materials guidance: https://apps.ecology.wa.gov/publications/SummaryPages/2204024.html
12:26:35 From  Jay Davis  to  Everyone:
	Success stories would be really interesting
12:27:00 From  Michael Jeffers, Seattle Public Utilities  to  Everyone:
	Great presenters and presentations.  Thank you.
12:27:02 From  Debra Williston  to  Everyone:
	Great Symposium! Please keep holding these. Helpful to hear from different regions too
12:27:03 From  Angela Tagnani  to  Everyone:
	Thank you so much to the speakers and organizers!
12:27:14 From  Jenee Colton  to  Everyone:
	Fabulous work! Thank you!
12:27:25 From  William Hobbs  to  Everyone:
	Virtual PCBs in Building Materials Training
	Tuesday, June 27
	1:30 p.m.-3:30 p.m.
	https://waecy-wa-gov.zoom.us/meeting/register/tZIodeytqD0tGdNmJVpYH_wIUUJ5Rnf9xgSa
12:27:30 From  Alan Chapman  to  Everyone:
	Virtual is carbon friendly
12:27:31 From  Curtis DeGasperi  to  Everyone:
	Thanks!
12:27:32 From  Gordon Woodrow  to  Everyone:
	many thanks, this was extremely informative
12:27:39 From  Nadine Benoit  to  Everyone:
	thank you!
12:27:44 From  Kirsti Lipphardt  to  Everyone:
	thank you everyone!
12:27:45 From  Suman Paudel  to  Everyone:
	Thanks all!
12:27:45 From  Mahdi Chitsaz (Rutgers)  to  Everyone:
	Great Symposium! Thank you so much to the speakers and organizers!
12:28:06 From  Priscilla Tomlinson  to  Everyone:
	Thank you to organizers and speakers!
12:30:28 From  Mahdi Chitsaz (Rutgers)  to  Everyone:
	And if they release it, that's in Fortran!
12:31:34 From  Mahdi Chitsaz (Rutgers)  to  Everyone:
	Thank you all!
12:31:37 From  Dana DELEON  to  Everyone:
	Thank you!