michigan taking action on pfas• surfactants • hydrophobic(repels water) and oleophobic (repels...

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Michigan Taking Action on PFAS

Steve Sliver, Executive DirectorMichigan PFAS Action Response Team517-290-2943| SliverS@Michigan.gov

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Per-and polyfluoroalkyl substances (PFAS)

• Strong carbon-fluorine bonds • Surfactants• Hydrophobic(repels water) and

oleophobic (repels oil, fat, grease)• Heat resistant• Began developing in 1940’s• 5,000+ compounds today

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Some Common PFAS Abbreviations

• Perfluorooctanoic acid (PFOA) • Perfluorooctane sulfonate (PFOS)• Perfluorononanoic acid (PFNA)• Perfluorohexane sulfonic acid (PFHxS)• Perfluorobutane sulfonic acid (PFBS)• GenX

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PFAS Uses

Chemicals and Pharmaceuticals ElectronicsAerospace Apparel Building and

Construction

Aqueous Film Forming Foam SemiconductorsOil & Gas Energy Healthcare and

Hospitals

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Why the Concern?

• Pervasive• Persistent• Bioaccumulative• Associated with adverse health

effects• Scarcity of information in

scientific literature• Incomplete regulatory structure5

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1 ppt = 1 drop in 20 Olympic pools

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Michigan PFAS Action Response Team (MPART)

• Executive Order 2019-03• Unique multi-agency approach• Leads coordination and

cooperation among all levels of government

• Directs implementation of state’s action strategy8

MPART Executive Director

Steve SliverLocal Health Department Advisory Council

Citizens Advisory Workgroup

Science Advisory WorkgroupGovernor’s OfficeEnvironmental Policy Advisor

Kara Cook

EGLE DMVAMDHHS LARADNR MDARD MDOT

Liesl Clark Robert Gordon

Dan Eichinger

Gary McDowell

Paul Ajegba Major General Paul Rogers

Orlene Hawks

= C o o r d i n a t i o n

Legislative / Policy

Communications

Budget

M P A R T M e m b e r s

MPART Coordinat ion St ructure

PFAS Technical Advisory Workgroup

PFAS Regional

Team Leads

Air Quality (EGLE)

Airports (MDOT)

Animal Health & Food Safety (MDARD)

Biosolids (EGLE)

Drinking Water (EGLE)

Fire Stations (LARA)

Groundwater (EGLE)

Lab Standards (EGLE)

Military Installations (DMVA)

Wastewater (EGLE)

Wildlife (DNR)

Human Health (DHHS)

Treatment Technology (EGLE)

Pollution Prevention (EGLE)

Surface Water (EGLE)

PFAS Site

Leads

MPART Representatives

Operations Manager

M a y 2 2 , 2 0 1 9

T o p i c a l W o r k g r o u p s

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MPART Response

• Protect public health• Standardize sampling and analytical• Study occurrence• Identify sources and source

pathways• Study environmental transport and

fate• Study ecological effects• Seek input and educate• Prevent future contamination• Develop standards

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MI Standards

Surface water quality ü 11/12 ppt PFOSü 420/12,000 ppt PFOA

Groundwater cleanupü 70 ppt PFOA/PFOSü GSI per surface water quality

standardsDrinking water ü 70 ppt PFOA/PFOS lifetime health

advisory recommendationqMCLs

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Sites Being Investigated

Sources of groundwater contamination over 70 ppt PFOS+PFOA

Multiple other investigations with no known source yet

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Mobility

• Highly mobile• Unconventional • Affected by organic

carbon, pH, clay content

• Current models lacking

• More studies needed

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Surface Water Investigations

• Ambient• Fish• Foam• Wastewater

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Integrating Technology

• Thermal imaging with drones

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Environmental Studies and Research

• Biosolids• Landfill leachate• Soil• Treatment technologies

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MI Public Water Supply Testing

• All community water supplies

• All NTNCWS schools and day cares

• May – December 2018

• Informs next phase of testing

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PFOA

70 ppt

78 ppt

35 ppt

21 ppt

14 ppt

9 ppt

38 ppt

ATSDR Environmental Media Evaluation Guide for adults only (2018)

• Adult drinking water intake• ATSDR MRL• Daily exposure• No Relative Source Contribution

NH Dept of Environmental Services proposed MCL• Water intake for a woman who is breast-

feeding• NH RfD• Daily exposure• 40% Relative Source Contribution

ATSDR Environmental Media Evaluation Guide for children (2018)

• Water intake for children less than 1 year old• ATSDR MRL• Daily exposure• No Relative Source Contribution

MDHHS screening level, MDH toxicokinetic model• Water intake varies by age• ATSDR MRL• Daily exposure• 50% Relative Source Contribution

New Jersey Dept Environmental Protection (2017)

• Adult drinking water intake• NJ RfD• Daily exposure• 20% Relative Source Contribution

NY Proposed MCL: 10 ppt (not all details are available yet)

Minnesota Dept. of Health, protective of breast-feeding infants, both from exposure they may receive prenatally and while breast-feeding (2018)

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Water intake varies by ageUSEPA RfDDaily exposure50% Relative Source Contribution

USEPA Lifetime Health Advisory, for PFOA individually or in combination with PFOS (2016)

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Water intake for a woman who is breast-feedingUSEPA RfDDaily exposure20% Relative Source Contribution

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BEGIN MCL

MPART MPART MPART

Final Rule Adopted

HBV’s Developed(Health Based Values)

Draft Rules Developed

SAWG Develops HBV’s

Rules Development with Stakeholder

InputPublic

Participation

ORR / ERRC

4/46/27 9/26

Overview of MCL Process

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Public Health Advisories

• Fish and deer consumption• 9 – 300 ppb PFOS

• Surface water foam

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Exposure and Health Assessments

• North Kent County• Parchment• Wurtsmith• Camp Grayling

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Fire Fighting Foam

• State Fire Marshal survey of fire departments

• MDOT survey of airports• Special equipment for required

training• PEAS Hotline after use• Collection and disposal program

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Michigan Department of Environment, Great Lakes, and EnergyMichigan.gov/EGLEMichigan.gov/PFASResponse