HomeMy WebLinkAbout04.d. Receive update on Per- and Polyfluoroalkyl Substances (PFAS) Page 1 of 8
Item 4.d.
CENTRAL SAN
September 16, 2019
TO: REAL ESTATE, ENVIRONMENTAL AND PLANNING COMMITTEE
FROM: MELODY LABELLA, RESOURCE RECOVERY PROGRAM MANAGER
REVIEWED BY: JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL
SERVICES
ROGER S. BAILEY, GENERAL MANAGER
SUBJECT: RECEIVE UPDATE ON PER-AND POLYFLUOROALKYL SUBSTANCES
(PFAS)
Staff will review the attached presentation on PFAS at the September 16, 2019, Real Estate,
Environmental & Planning (REEP) Committee meeting.
ATTACHMENTS:
1. Presentation
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 23 of 32
Page 2 of 8
I� UPDATE ON
PER- AND POLYFLUOROALKYL
- SUBSTANCES (PFAS)
Melody LaBella, P.E.
Resource Recovery Program Manager
., REEP Committee Meeting
September 16, 2019
PRESENTATION OVERVIEW
What are PFAS?
Why the Concern?
Sources to the Water Environment
Common Uses
Drinking Water Notification and Response Levels
Potential Impacts to Our Industry
2016 Regional Monitoring Program Study
State Board's Phased Investigation Plan
Next Steps for Central San
Questions
` I
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 24 of 32 1
Page 3 of 8
WHAT ARE PFAS?
PFAS are a broad class of fluorine-rich
specialty chemicals that have been o q
manufactured and used in a variety of
industries around the globe, including in the
United States, since the 1940s.
Some possess thermal stability, non-reactivity, and
surfactant properties.
The carbon-fluorine bonds are some of the strongest
known to science, which means PFAS show extremely
high persistence.
' 3
WHY THE CONCERN?
Well-studied perfluorooctane sulfonate (PFOS) and
perfluorooctanoic acid (PFOA) have been shown to be highly toxic. 1
Other PFAS have received little to no testing, but their structural
similarities suggest they are likely to trigger similar concerns for
human and ecological health. '
PFAS have been linked to increased cancer risk, elevated
cholesterol levels, and decreased fertility. 2
PFAS are being found in drinking water supplies.
Sedlak, M.,Sutton R.,Wong A.,Lin, Diana.2018. Per and Polyfluoroalkyl Substances(PFASs)in San Francisco
Bay:Synthesis and Strategy. RMP Contribution No.867.San Francisco Estuary Institute,Richmond CA.
Z US Department of Health and Human Services,Agency for Toxic Substances and Disease Registry.2018."Draft
Toxicological Profile for Perfluoroalkyls." y I
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 25 of 32 2
Page 4 of 8
WHY THE CONCERN?
Nearly 5,000 PFAS are used in
consumer, commercial, and
industrial applications.
Including personal care products and
food packaging
Cheo th ••IVI,V 0. =
Denmark just became the first country
to ban PFAS 'forever chemicals' from
food packaging
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CFNTRAI SAN
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SOURCES OF PFAS TO THE WATER ENVIRONMENT
Military bases and airports IV
Due to aqueous film-forming
foams used for fire fighting
r
PFAS production facilities
Air deposition
Landfills
Treated wastewater effluent
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 26 of 32 3
Page 5 of 8
COMMON USES
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September 16, 2019 REEP Committee Meeting Agenda Packet- Page 27 of 32 4
Page 6 of 8
CALIFORNIA DRINKING WATER
NOTIFICATION AND RESPONSE LEVELS
In August 2019, the Office of Environmental Health Hazard
Assessment (OEHHA) recommended notification levels (NLs) for
PFOA and PFOS be set at the lowest reliable detection limit in
drinking water to protect against cancer and non-cancer effects.
The State Water Resources Control Board (State Board) Division
of Drinking Water matched OEHHA's recommendations.
NLs of 6.5 parts per trillion (ppt) for PFOS and 5.1 ppt for PFOA
Response level at 70 ppt (discontinue source or provide treatment)
F
CENTRAL SAN
POTENTIAL IMPACTS TO OUR INDUSTRY
Potable reuse
Biosolids disposal
Land application or landfill
Future regulations (?)
Negligible removal of PFAS through conventional
wastewater treatment
Revere osmosis (RO) is effective at removal, but
concentrates PFAS in the RO membrane reject
PFAS thermal destruction range = 600 to 3,600 °F
io
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 28 of 32 5
Page 7 of 8
STATE BOARD'S PHASED INVESTIGATION PLAN
Phase I involves over 1 ,500 airports, landfills, and
drinking water wells across the state.
Phase II will cover refineries, bulk terminals, non-
airport fire training areas, and urban fire areas.
Phase III will cover secondary manufacturers,
wastewater treatment plants, and domestic wells.
.a r.
_ Or CENTRAL SANT
NEXT STEPS FOR CENTRAL SAN
Supporting CASA's efforts to work with the State Board
to help shape the Phase III investigation plan for
wastewater treatment plants
Potential participation in Water Research Foundation's
sampling study, which is currently seeking proposals
Learning more about PFAS
z
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 29 of 32 6
Page 8 of 8
CENTRAL SAN'S PFAS TASK FORCE
Engineering Regulatory Communications/
Jean-Marc Petit Lori Schectel Legislation
Melody LaBella Lab Emily Barnett
Dan Frost Mary Lou Esparza
Pretreatment
Colleen Henry
Jeff Skinner
Air
Randy Schmidt
` Rita Cheng
CENTRAL SAN
QUESTIONS?
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VIM ' 14
September 16, 2019 REEP Committee Meeting Agenda Packet- Page 30 of 32