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Landfill Monitoring and Exposure Summary
Goal for Today
Understand the contribution of landfills to PFOA levels in the environment
Environmental Assessment From Manufacturing Facilities/Landfills
1. Characterize emissions and source parameters from facility/landfill___
2. Measure fate and transport of missions to water and land
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3. Assess Environmental Exposure Potential
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LandfilWls AellreMRaengaugleadted And
Industrial landfills are subject to State solid waste management requirements:
- Msysotsetmhasv(ei.ee.n, gdianielyeraenddcpoenrtmaiannmeennt)t and cover - Egrxotuennsdiwvea/tferremquoennittosruirnfgace water and - Discharges are NPDES permitted
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Typical industrial Landfill Conceptual Model
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LANDFILL CONCEPTUAL MODEL
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Typical Landfill Monitoring
Surface Water Monitoring - Ponds - Outfalls - Stormwater - Streams Groundwater Monitoring - Program dictated by hydrogeologic complexity - Quarterly or semi-annual Leachate Monitoring
What we have learned from monitoring at landfills.....
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Landfills On-site Summary
Item
Landfill Type
Site 1
Engg Cap
Site Wells
15
Sampling Events
Over 20
On-site PFOA Range 0.058-30,500
(ppb)
Site 2
Active 13 10
NQ-22.8
Site 3
Soil Cover 9 8
NQ-65.9
On-site PFOA Mean
(Ppb) GW-SW Flow (gpy)
PFOA Flux (lbs/yr)
2763
525,600 4.03
2.87
6,664,900 8.65
17.7
2,482,000 1.01
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Groundwater Investigation Steering Team (GIST)
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GIST Offsite Summary-3 Landfills
Item
GIST Offsite Sample
# Off-site Samples Offsite PFOA Range O(pfpfbsi)te PFOA Mean (ppb)
Sitel
1-mile
30 ND-0.636
0,04
Site 2
1-mile
53 ND-0.974
0.185
Site 3
2-mile
109
ND-14.3
1.46
Landfills-Overall Impressions
Landfills are regulated by state permits Permits require:
- Engineering controls - Monitoring plans
Our experience demonstrates:
--Engineering controls are effective for PFOA --TPFheOmAocnointotrriibnugticoonntdoutchteedeinnvdiircoantmesemntinimal
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Actions
The other Fluoropolymer LOI signatories
will compare the DuPont data with then-
industrial landfill data in order to develop
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contribution of environmental
loadings
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