Document EqNd3QBrJo82OQXBGBV1QeRjn
AR226-2565
EGA Technical Subgroup
Monitoring
Landfill Monitoring and Exposure Summ
Goal for Today
Understand the contribiition of landfills PFOA levels in the environment
Environmental Assessment F Manufacturing Facilities/Land
1. Characterize emissions and source parameters from facility/landfill
3. Assess Environmental Exposure
Potential
Landfills Are Regulated An Well Managed
Industrial landfills are subject to State waste management requirements:
- Most have engineered containment and co systems (i.e., daily and permanent)
- Extensive/frequent surface water and groundwater monitoring
- Discharges are NPDES permitted
Typical Industrial Landfill Conceptual Mo
Typical Landfill Monitorm;
Surface Water Monitoring
- Ponds
- Outfalls - Stormwater - Streams Groundwater Monitoring - Program dictated by hydrogeologic comple - Quarterly or semi-annual Leachate Monitoring
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What we have learned fro
monitoring at landfills....
Landfills On-site Summary
Item
Landfill Type
Site Wells
Sitel
Site 2
S
Engg Cap
Active
So
15
13
Sampling Events
Over 20
10
Oil-site PFOA Range 0,058-30,500 NQ-22.8
N
(ppb)
Oil-site PFOA Mean (ppb)
GW-SW Flow (gpy)
PFOA Flux (Ibs/yr)
2763
525,600 4.03
2.87
6,66 fy^J^Jf 4I ,^ 900
29,
8.65
Flux Calculation
Groundwater Investigation
Steering Team (GIST)
GIST Offsite Summary-3 Landfi
Item
Sitel
Site 2
S
GIST Offsite Sample
1-mile
1-mile
2
.# Off-site Samples
30
53
Offsite PFOA Range ND-0.636
ND-0.974
ND
(Ppb)
Ofisite PFOA Mean
0.04
0.185
(Ppb)
Landfills-Overall Impression
Landfills are regulated by state permits
Permits require:
- Engineering controls - Monitoring plans
Our experience demonstrates:
- Engineering controls are effective for PFO - The monitoring conducted indicates minim
PFOA contribution to the environment
Actions
The other Fhioropolymer LOI signatori
will compare the DiiPont data with thei
industrial landfill data in order to develo
an understanding of the contribution of other landfills to PFOA environmental
loadings