wurtsmith air force base – public meeting · 4/25/2017 · •the primary source of pfass at...
TRANSCRIPT
WURTSMITH AIR FORCE BASE – PUBLIC MEETING
Robert DelaneyRemediation and Redevelopment Division (MDEQ)
April 25, 2017
PFAS Use in Different Industries2
PFAS Use in Different Industries3
• The primary source of PFASs at Wurtsmith are attributed to AFFF* use.
• Prior to the invention of AFFF, Protein Foam was widely used – but not as effective.
• The Fluorine and Carbon bond is a very strong chemical bond, which makes PFASs resistant to heat, oxidation and reduction.
• PFASs stay in the environment for a very long time (i.e. very difficult to remediate and remove).
PFASs at Wurtsmith4
* - Aqueous Film Forming Foam
1967 – USS Forrestal fireProtein Foam
134 sailors died,161 sailors injured 196 lives saved out of 200
1978 – DC-10 Crash LAX3M AFFF
Why AFFF?5
• The terminology of these compounds has evolved:
PFCs (Perfluorinated Compounds) - Used by Regulators and DOD
PFASs (Poly-and Perfluoroalkyl Substances) - Used by Industry and Academia
Terminology Evolution: PFCs vs. PFASs
PFASs
Former Wurtsmith Air Force Base7
Conceptual Contaminant Migration8
Drinking Water Sampling – June 20169
Approximate Extent of PFAS Contamination 10
(ng/L or ppt)
Background PFAS Concentrations11
DRAFT
PFAS Fingerprinting
Non-AFFF PFASs
Other PFASs
PFHxS
PFOS
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PFOA
PFAS Fingerprinting - Groundwater13
(ng/L or ppt)
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(ng/L or ppt)
MDEQ Geological Services Unit – Field Investigation
DRAFT
MDEQ – Paleo Channel Investigation15
MDEQ – Paleo Channel Investigation16
DRAFT
MDEQ Plume Delineation RI Work Plan17
(ng/L or ppt)
1985 P&T Capture Areas18
Questions?
Robert DelaneyMDEQ - RRD
517-284-5085
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