I n t e g r i t y - S e r v i c e - E x c e l l e n c e Town Hall Meeting: Drinking Water Alternatives for the Community of Moose Creek, AK Eielson AFB 1 Dec 2016
Goal and Purpose Goal: The Air Force goal is to protect human health and ensure mission activities do not impact the installation and the supporting communities' access to safe drinking water. We are committed to being transparent and maintaining open dialogue with communities, regulators and other stakeholders. Purpose: Present potential alternatives for a long-term drinking water source for the community of Moose Creek Seek feedback on alternatives so we can understand your concerns I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Agenda Introductions Update on Air Force response actions Alternatives for long-term drinking water supply for the Community of Moose Creek Timeline and future opportunities for public participation Questions? I n t e g r i t y - S e r v i c e - E x c e l l e n c e
AF Response Status 169 properties exceed EPA’s lifetime health advisory for PFOS/PFOA As of 1 Nov 2016, the AF has installed and is operating: 90 Water Tanks with delivery service 67 Granular Activated Carbon (GAC) Treatment Systems 9 properties are awaiting system installations (4 w/agreements) Moose Creek Apartments expected to be complete by Fall 2017 Coming Soon System satisfaction surveys (Jan 2017) System operation agreement renewals (Jan 2017) I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Engineering Study Objectives Evaluate the feasibility of long-term water supply alternatives Prevent ingestion of PFOS/PFOA-contaminated water that exceeds EPA’s lifetime health advisory of 0.07 ug/L I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Moose Creek Study Area I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Moose Creek Study Area I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Long-Term Options EPA guidance recommends considering the following general categories: Status Quo (baseline) Connection with an existing municipal or private supply Develop new uncontaminated water resources Removal of contaminants via treatment I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Status Quo The “Status Quo” response consists of keeping the currently installed systems at each property Air Force is responsible for long-term O&M, system monitoring and water delivery The “Status Quo” alternative is included as a baseline for evaluation of other alternatives I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Connection to Existing Supply “Municipal” drinking water supplies available near Moose Creek Alternative 1 – Water main extension from North Pole Alternative 2 – Water main extension from Eielson AFB Private drinking water sources near Moose Creek Alternative 3 – Individual water tanks with water truck delivery I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 1 NP Water Main Extension New main from North Pole to Moose Creek New local distribution system, one service connection per property New local reservoir and pump station (location to be identified) Decommission existing wells Land Use Controls (LUCs) Water supply and distribution would become responsibility of North Pole Water and Sewer Utility I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 1 NP Water Main Extension I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternatives 1,2,5 Local Distribution Concept I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 2 EAFB Water Main Extension New water main from Eielson AFB to Moose Creek New local distribution system, one service connection per property New local reservoir and pump station (location to be identified) Decommission existing wells Land Use Controls (LUCs) Water supply would be responsibility of the Air Force Distribution system may be operated by private company I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 2 EAFB Water Main Extension I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternatives 1,2,5 Local Distribution Concept I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 3 Individual Water Tanks This option has been implemented at a majority of properties in Moose Creek Consists of replacing all GAC systems currently in place with tanks Delivery service by water truck Decommission existing wells Land Use Controls (LUCs) Water supply would be responsibility of the Air Force I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Develop Uncontaminated Supply Category Groundwater currently serviced by wells <100 ft deep Testing has shown water at >200 ft is uncontaminated Alternatives under this category: Alternative 4 – New Individual Deep Well per property Alternative 5 – New Deep Well to serve Community I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 4 Individual Deep Wells Install a new well, approximately 200 feet deep, at each property Decommission existing wells Implement Land Use Controls (LUCs) Property owners operate new wells I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 5 Develop New Community Well New well and water treatment facility built at Moose Creek New local reservoir and pump station (location to be identified) New local distribution system, one service connection per property Decommission existing wells Implement Land Use Controls (LUCs) Water supply and distribution system may be operated by private company or City of North Pole I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 5 Develop New Community Well I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternatives 1,2,5 Local Distribution Concept I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Removal of Contaminants via Treatment Category Treatment technologies to remove PFOS and PFOA have been investigated Granular activated carbon has proven to be a very effective technology to treat domestic water Reverse osmosis has been shown to be effective in studies Alternatives under this category: Alternative 6 – Individual GAC treatment I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative 6 Individual GAC Treatment This option has been implemented at some properties in Moose Creek Replace water tanks already installed with individual GAC treatment systems Decommission existing wells Implement Land Use Controls (LUCs) AF responsible for long-term O&M and system monitoring I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Alternative Summary Status Quo – Keep Existing GAC Systems and Tanks Alternative 1 – NP Water Main Extension Alternative 2 – EAFB Water Main Extension Alternative 3 – Individual Water Tanks with Delivery Alternative 4 – Individual Deep Wells Alternative 5 – Develop New Community Well Alternative 6 – Individual GAC Treatment I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Timeline and Public Participation Study (Interim Feasibility Study or IFS) is being conducted under CERCLA Will be followed by an Interim Proposed Plan (IPP) and Interim Record of Decision (IROD) Draft IFS – Jan/Feb 2017 Draft IPP – Aug 2017 Draft IROD – Mar 2018 Public Participation Opportunities Additional Public Meeting at the IPP phase 30-day Public Comment periods on Draft IFS, Draft IPP, Draft IROD I n t e g r i t y - S e r v i c e - E x c e l l e n c e
More Information Eielson AFB Environmental Site http://www.eielson.af.mil/info/environmental.aspx MC Information Repository Site http://alaskacollection.library.uaf.edu/eafbsc/cd0/Moose%20Creek% 20PFCs%20Contamination%20Information%20Repository/ Air Force Civil Engineer Center http://www.afcec.af.mil/Home/Environment/Perfluorinated- Compounds/ Environmental Protection Agency www.epa.gov/ Agency for Toxic Substances and Disease Registry www.atsdr.cdc.gov/ I n t e g r i t y - S e r v i c e - E x c e l l e n c e
Questions? I n t e g r i t y - S e r v i c e - E x c e l l e n c e
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