PFOS/PFOA Off-Base Drinking Water Impacts

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Presentation transcript:

PFOS/PFOA Off-Base Drinking Water Impacts Ms. Melody Jensen AFCEC/CZOM 11 December 2018

Overview PFOS/PFOA Timeline at Ellsworth AFB Off-Base Drinking Water Well Sampling Future plans

PFC Timeline at Ellsworth 2011 - PFCs detected at the (FT001) as part of Broad Agency Announcement 2013 - Remedial Investigation (RI) Funded 2014 - Limited Site Investigation (SI) Completed at 6 Sites 2015 - Preliminary Assessment Completed 2016 - Stage 1 Fieldwork for the RI Completed 2016 - EPA established lifetime Health Advisory drinking water for PFOA/PFOA of 70 ppt 2016 - Off-Base Private Well Identified & Sampled 2016 - Alternate Water Supply Provided to Impacted Landowners 2018 - Stage 2 Fieldwork for the RI Completed 2018 - SI Fieldwork Completed 2018 - Off-Base Private Drinking Water Well Survey /Sampling Future - Stage 3 Fieldwork & Complete RI

Off-Base Drinking Water Well Sampling Private well sampled in 2016 (99 ppt) and again in 2017 (182 ppt) Connected 2 impacted properties to alternate water source Off-Base Door to Door Private Well Survey/Sampling Phase 1: 18 Sept 2018 – 24 wells sampled 12 Drinking water wells (9 above EPA Lifetime Health Advisory) 10 Irrigation wells (8 above EPA LHA) Phase 2: 29 Oct 2018 – 27 Drinking water wells sampled 2 Wells above EPA LHA Phase 3: 29 Nov 2018 – 16 wells sampled 10 Drinking water wells (4 above EPA LHA) 6 Irrigation wells (2 above EPA/LHA) Alternate Water provided to properties above EPA LHA

Off-Base Drinking Water Well Sampling

Future Plans Finalize the PFOS/PFOA Remedial Investigation for site FT001 Continue to identify and sample off-base drinking water wells for PFOS/PFOA using the 3-Ps Proximity Probability Pathway Continue to provide alternate water to impacted properties Provide bottled water until permanent solutions are implemented Work with property owners to design/install treatment systems (reverse osmosis) on drinking water wells Connect properties to municipal water system if available Work with municipal water systems to expand service area or capacity if feasible

Contact Information Melody Jensen AFCEC/CZOM 2125 Scott Dr Ellsworth AFB 57706 605-385-2677 Melody.jensen.1@us.af.mil