Restoration Advisory Committee for Stewart Air National ...€¦ · Newburgh Clean Water Project...

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Restoration Advisory Committee for

Stewart Air National Guard Base

Meeting 3July 29, 2020

(DRAFT – subject to change prior to meeting)

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Air National Guard Team

• National Guard Bureau• Elaine Magdinec, Chief, Environmental Division• Robert Subasavage, Chief, Environmental Quality Branch• Nicole Wireman, Restoration Program Manager

• Stewart Air National Guard Base• Colonel Marc Kelly, Maintenance Group Commander, and co-chair• Mike Oettinger, Environmental Manager• Sara Pastorello, Public Affairs

• U.S. Army Corps of Engineers• Jeremy Ayala• Michelle Lordemann• Erik Jarger

• Contractors• BERS Weston Services• Wood

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• Ramona Burton • John Clarke• Anthony Fern• Tal Gluck• Carla Johnson• Edward Lawson• Aura Lopez Zarate• Cynthia Mack• Laura Patricia Garcia

Balbuen• Cassie Sklarz

• Manna Jo GreeneHudson River Sloop Clearwater, Inc

• Mary WagnerNewburgh Clean Water Project

• Chuck Thomas, co-chairNewburgh Conservation Advisory Council

• Victoria LeungRiverkeeper

• Jack CaldwellQuassaick Creek Watershed Alliance

Government Representatives• Stewart Air National Guard Base • Orange County• City of Newburgh• Town of New Windsor

RAC Members

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Agenda

6:00 PM Welcome – Col. Marc Kelly and Mr. Chuck Thomas6:05 PM RAC Business

• Meeting Guidelines• Upcoming Meeting Dates• Operating Procedures

6:20 PM Update on Environmental Projects at Stewart ANGB• PFOS/PFOA

• Expanded Site Inspection – Kerry Tull, Wood• Interim Storm Water Treatment System – Doug Close, BERS

• Community Involvement Plan (CIP) Update – Nicole Wireman,NGB/A4VR

• DoD and State Memorandum of Agreement (DSMOA) & the National Guard Bureau – Nicole Wireman, NGB/A4VR

7:20 PM RAC Open Discussion7:40 PM RAC Public Questions8:00 PM Adjourn

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RAC Business

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Meeting Notes / Guidelines

• Tonight’s presentation is being transcribed.

• Please introduce yourself before speaking.

• All phones are muted and will need to be unmuted prior to speaking.

• Five minutes allotted for Q&A by RAC members after each topic.

• During the RAC Open Discussion, the RAC members may raise their hand to make a comment or ask a question – 3 minute limit.

• Public questions should be submitted through the question module and will be read and addressed in the order they are received. Questions that cannot be answered before the meeting ends will be recorded and written responses will be provided.

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Upcoming Meetings

• RAC Meeting 4 – October 28, 2020Newburgh Armory*

• RAC Meeting 5 – February 3, 2021Newburgh Armory

• RAC Meeting 6 – Proposed for April 28, 2021**Newburgh Armory

*If local and national COVID-19 travel, meeting, and social distancing restrictions are lifted

**As approved by the community RAC Members7

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Operating Procedures

• Response to comments submitted to Chuck Thomas on 28 April

• The Air National Guard (ANG) is awaiting concurrence or additional comments

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Update on Environmental Projects at Stewart Air National Guard Base

Nicole WiremanRestoration Program Manager

NGB/A4VR

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AR Quick Navigation Aids

Report Name AR # Main Report AR # for Additional Parts

Final SI Report for PFOS/PFOA (2018)

598617 (Part 1 of 3) 598619 and 598621 (Parts 2 – 3)598642 (explains change in AR #s)

Final SI Report Addendum for PFOS/PFOA (2019)

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Final LTM Work Plan for Site 3 –Former Base Landfill (2020)

595733

Final 2019 Annual LTM Report for Site 3 (SS003, aka Site 1)

590042 (Part 1 of 5) 590058 - 590061 (Parts 2 – 5)

Final RI Report for Pesticides in Monitoring Well-01 (SS005, Site 5) (2017)

556572 (Part 1 of 3) 556573 - 556574 (Parts 2 – 3)

April 2020 RAC Meeting Materials(agenda, slides, answers to questions, transcript in English/Spanish)

598194 599345 (Responses to 65 questions about April meeting submitted by RAC in June 2020)

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AR = Administrative Record PFOS = Perfluorooctane SulfonateLTM = Long Term Monitoring SI = Site InspectionPFOA = Perfluorooctanoic Acid RI = Remedial Investigation

https://ar.afcec-cloud.af.mil/

https://ar.afcec-cloud.af.mil/

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PFAS Expanded Site Inspection

Kerry TullSenior Principal/Project Manager

Wood PLC

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Site Inspection Background

• Initial Phases of the SI displayed PFOS/PFOA > the Lifetime Heath Advisory (LHA) level for drinking water in three areas of the Base:

– West/southwest portions of the Base; – East/southeast near the former Base landfill Site 3; and– Current Fire Station (Building 104)

• Results showed PFAS in stormwater flows from the Base to surface water in Rec Pond to Silver Stream, with the potential to flow to Lake Washington, a drinking water source

– According to Newburgh Water Department, Lake Washington has not received Silver Stream water for four years as the Diverter has been sending water southward to Moodna Creek since 2016

• ANG implements short-term response actions when ANG identifies drinking water with PFOS/PFOA above the LHA as a result of past mission activities (e.g., provides alternate drinking water source, filtration system, bottled water)

– In 2018, New York State completed construction of a drinking water treatment system at Lake Washington which treats water to below the LHA

– Therefore, a response action for drinking water has already occurred 12

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Expanded Site Inspection (ESI)

• Previous SI reports recommended expanded inspection which was accomplished in 2019/2020:

– Further evaluated groundwater/surface water pathway for PFAS to Rec Pond;

– Monitored dry weather and storm flow volume and PFAS load at outfalls to/from Rec Pond;

– Developed stormwater model and PFAS load estimates;

– Assessed groundwater/surface water pathway for PFAS to Lake Washington;

– Evaluated soil/groundwater at Potential Release Location (PRL) 16, which is another Nozzle Testing Area

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ESI Increased Site Understanding

Field Activities Initial SI 2018 SI Addendum 2019 Expanded SI 2020*(represents 55% increase in sampling over the combined two previous events)

Wells installed 22 4 12

Groundwater 25 4 20

Stormwater 0 0 50

Surface water 26 10 11

Sediment 34 0 8

Soil 75 0 9Totals 182 18 110

14*See separate PDF for figure from Draft Final ESI Report showing sample locations and area features.

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ESI Includes New Guidance

• New PFAS Screening Levels (SLs) adopted from new Environmental Protection Agency (EPA) Risk Tables and 2019 Department of Defense (DoD) guidance

• New SLs for water– PFOS/PFOA = 40 ppt (parts per trillion) reduced from 70 ppt– PFBS = 40,000 ppt reduced from 400,000 ppt

• New SLs for soil/sediment– PFOS/PFOA = 130,000 ppt reduced from 1,260,000 ppt– PFBS = 130,000,000 ppt reduced from 1,300,000,000 ppt

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Ranges of Detected PFAS in SI and ESI

Media Sampled PFOS PFOA PFBS

All concentrations in parts per trillion (ppt)

Groundwater ND – 14,800 ND – 7,460 ND – 461

Stormwater ND – 3,790 ND – 264 ND – 131

Surface water ND – 11,800 ND – 3,370 ND – 5,570

Sediment ND – 586,000 ND – 9,760 ND – 1,270

Soil ND – 520,000 ND – 6,680 ND – 8,250Notes: Bold > SLData shown above includes preliminary data from the Expanded SI and could change.

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Conclusions - Groundwater

• PFAS in groundwater were detected > SL at isolated/distinct areas – not Base-wide

• PFAS > SL detected in 4 of 13 off-Base groundwater wells, but at relatively low concentrations

• Groundwater infiltration via joints/cracks in underground stormwater pipes = continuous PFAS dry weather flow

• Groundwater in PRL 16 did not exhibit detections of PFAS > SL

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Conclusions – Stormwater/Surface Water

• PFOS/PFOA were consistently detected > SL in catch basins on-base during dry weather sampling events. – Indicates groundwater is likely infiltrating underground

stormwater piping

• Stormwater and surface water PFAS concentrations vary on- and off-Base, as each outfall has a unique response during rain events

• Surface water in Patton Brook displayed minimal PFAS– East of Thruway, concentrations were within background range– Therefore, Recreation Pond was primary focus for stormwater

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Conclusions – Stormwater/Surface Water and Recreation Pond

• Stormwater PFAS concentrations from Outfall 003 increased with wet weather flow

– PFAS may be driven from surface locations

• Stormwater PFAS concentrations from Outfall A and 002 decreased during rainfall

– Supports PFAS coming from groundwater infiltration into underground stormwater pipes

– Large portion of stormwater piping is below the groundwater level at these two outfalls

• Wet weather flow rates from surface water and stormwater produce significant volumes of water that must be incorporated into future design considerations for treatment

– Max of 47,355 gallons per minute (gpm) leaving Rec Pond in 2.03 inch rain event– Indicates significant land and infrastructure reworking would be needed to enable

construction of a suitable sized treatment plant to accept water from storm events 19

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Conclusions – Soil/Sediment

• Soil does not appear to be a significant contributing source of PFAS to the Base or overall study area

• Soil samples from Nozzle Testing Area PRL 16 did not exhibit PFOS, PFOA, or PFBS > SL– Therefore, PRL 16 is not a source of PFAS at base (confirmed by lack

of detection in groundwater at this PRL)

• Sediment appears to be primarily a PFOS source as neither PFOA nor PFBS exhibited > SL

• Sediment in Rec Pond likely contributes PFAS to surface water, however relatively low to insignificant compared to contributions from stormwater/surface water

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Recommendations

• Conduct additional focused dry and wet weather sampling and investigation throughout the study area to better identify PFAS sources– Groundwater/surface water: Additional samples to assess

nature and extent to include discrete samples during stormwaterevents to identify whether source is from groundwater or surface water, both on- and off-base

– Stormwater: Peak flows and volumes due to rainfall (e.g. 25-, 50- and 100-year events) which can be used to populate stormwater model created during Expanded SI and eventually to identify feasible treatment methods in the Feasibility Study

– Soil/sediment: Sample collection throughout the study area to support focused mitigation if localized sources can be identified – e.g. spot removal

• This is especially true in the Outfall 003 sub catchment area 21

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Recommendations (continued)

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• Evaluate off-base contributions to Rec Pond– Evaluate drain lines from Stewart International Airport (SIA) to

Outfall A, as well as the late finding of the unidentified outfall to the west of Outfall A

– Conduct inspections/sampling upstream of 17K to determine sources and continue to work with New York State Department of Transportation (NYSDOT) to relocate Outfall 17K

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RAC Questions

Expanded Site Inspection Questions

RAC Members Please Raise Your Hand to Ask a Question

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TIME IS UP!

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Interim Storm Water Treatment System at Recreation Pond

Doug CloseBERS Weston Services

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Rec Pond Site Overview

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Milestone Timeline

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Sampling for known constituents

Phase 1 Pilot Study

ISWTS operations suspended due to fouling

Analytical data review & media testing

Design of System Modifications

6 Jan. 2020 Jan. 2020 Jan. –

Feb. 2020

Feb. –March 2020

April 2020

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Milestone Timeline

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Procure system & coordinate with PANYNJ for construction

Start up

Construction

May 2020 June 2020 July 2020

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Pilot Study Phase 1 Recap

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• Timeline – 14 February to 20 March• System Testing – A small scale system and a full scale system were operated

simultaneously. • Small scale system comprised of 2 sand filters, 2 bag filters, one carbon and

two resin vessels for 21 days. • The media vessels were all 10” diameter and operated at the full scale loading

rate of 6.4 gpm/square foot.• Full scale system comprised of two treatment trains (C and D). Operated for

8 days. • The media was not changed out prior to testing.

• Biofouling – Worked with New York State Department of Environmental Conservation (NYSDEC) for approval of a peroxyacetic acid-based microbiocidefor disinfection.

• Maintenance - Included: Skimming solids from top of Granular Activated Carbon (GAC) and Ion Exchange Resin beds, backwashing media and re-leveling of media following backwash to eliminate channeling caused during backwash. Two of the four treatment trains were operated at the full scale loading rate (125 gpm/train).

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Sand Filter Pilot Skid

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Sand Skid Filter Sand Skid Filter Connected

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Small Scale PFAS Treatment System

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Bag Filters Small Scale System

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Phase 1 Pilot Study Conclusions & Recommendations

1. Turbidity • Influent (pond) turbidity ranged from 2.1 to 6.9 Nephelometric Turbidity

Units (NTU) • No Major rain events were observed• December 2019 turbidity ranged from 3 to 53 NTU• Sand filters were able to remove an average of 0.6 NTUs of turbidity• Bag filters were able to remove an average of 1.1 NTUs of turbidity

• Resin manufacturer recommended 1 NTU prior to Resin treatment• To protect ISWTS recommend suspending operations when turbidity

exceeds 10 NTU

2. New Sand Filter System• System will have duplex sand filters comprised of 2 coarse sand (No.

12) and 3 fine sand (No. 20) with automated backwash capabilities for a total of 10 filters

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3. Chemical Addition System• Safe levels of peroxyacetic acid-based microbiocide, as approved by

NYSDEC, will be pumped into the influent through a chemical addition system

4. “Closed Loop” Biofouling• Will have the ability to perform disinfection using a “Closed Loop”

biofouling mitigation system to control biological growth if the chemical addition is insufficient

• All wastewater will be be captured and treated prior to disposal

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5. Bag Filtration• One additional bag filter train (2) will be installed in the existing

pretreatment enclosure

6. Releveling and Draining• Backwashing of the GAC or IX resin system causes channeling

within the media• After backwashing, the vessels will be drained and the media bed

will be re-leveled to prevent channeling and premature PFAS breakthrough

7. Pond Algae/Growth Treatment• Summer conditions cause algae and other growth in the pond• Pond treatment options are being investigated and treatment

options will be submitted to NYSDEC and PANYNJ for approval39

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8. Resin • PFOS/PFOA were not detected in the effluent of either system.

• Small scale – PFAS were sampled 7 times• Full scale – PFAS were sampled 3 times

• Train C – Primary Vessel had PFOA and PFOS levels between 2.3 and 7.3 ppt

• Train D – Primary Vessel had PFOA and PFOS levels between 6.1 and 12.2 PPT

• Total effluent values from each train (C & D) were non-detect• The small scale system showed no signs of oxidation on visual

inspection • The full scale system (Train C) showed signs of oxidation on visual

inspection• Primary resin had heavy oxidation, high moisture content, and

organics but had low PFOA PFOS breakthrough in the primary vessel• Secondary resin had exhibited similar conditions at lower levels

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ISWTS - Phase 2 Pilot Alterations

• Following approval of Phase 1 Pilot recommendations, Onion Equipment Company (OEC) designed system modification. System will have duplex sand filters comprised of 2 coarse sand (No. 12) and 3 fine sand (No. 20) with automated backwash capabilities for a total of 10 filters.

• Concurrently with system fabrication, BERS Weston prepared Site design updates finalizing the location of the new skid and required new interconnecting piping, electrical and controls. The design updates were submitted and approved by PANYNJ under a Tennant Alteration Application.

• Site construction started 10 June 2020 and is scheduled for completion the week of 13 July 2020.

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ISWTS – Updated Site Layout

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ISWTS – Updated Site PFD

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Phase 2 Pilot Construction Photos

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Placement of Sand ContainerPipe Opening for Sand Container

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Phase 2 Pilot Construction Photos

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Pipe Assembly for Sand Filtered Water

Pipe Assembly of Bag House

Sand Filter Container Prior to Pipe Connection

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RAC Questions

Interim Storm Water Treatment SystemQuestions


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TIME IS UP!

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Community Involvement Plan (CIP)Update


NGB/A4VR

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Community Involvement Plan (CIP)

• A CIP is a site-specific strategy to enable meaningful community involvement throughout the CERCLA cleanup process.

• CIPs are “living documents” and should be reviewed and updated periodically.

• The ANG generally follows EPA’s Superfund Community Involvement Handbook (2016).

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Contents of a CIP

• Scope and objective of the Stewart ANGB Environmental Restoration Program

• Site history including environmental history• Key demographic information about the affected

community• Background and history of community involvement at the

site– Key issues related to specific sites and the overall cleanup effort

• Community needs, concerns, and expectations– As identified through community questionnaires and interactions

with stakeholder groups• Community involvement activities Stewart ANGB plans

to continue/implement 55

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Anticipated Path Forward for 2020 CIP Update

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To date • Developing questions for Survey Monkey link (English/Spanish)• Developing list of stakeholders who will receive letters via email and

identifying residences in surrounding community who will be mailed post cards with the Survey Monkey link

• ANG review

Jul 2020 • RAC presentation

Sep 2020 • Mail letters and postcards• Publish newspaper ad• Make Survey Monkey link active

Oct 2020 • Compile responses and prepare CIP

Nov 2020 • Submit draft CIP to ANG

Jan 2021 • Submit Draft Final CIP for regulatory agency review

TBD • Finalize Updated CIP

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Questions/Comments?

For additional information regarding outreach to the community around Stewart ANGB,

please contact:

Sara Pastorello, MSgt, NYANG 105th Airlift Wing Public Affairs

845-563-2031

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RAC Questions

Community Involvement Plan Questions


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TIME IS UP!

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DoD and State Memorandum of Agreement (DSMOA) and the

National Guard Bureau


NGB/A4VR

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What is DSMOA?

• DSMOA is the Defense State Memorandum of Agreement.

• The goal of the DSMOA program is to expedite environmental restoration at DoD installations through enhanced partnerships with states and territories.

• DSMOA allows DoD to compensate state regulatory agencies for expedited reviews of documents.– Negotiated in a 2-year cycle in Joint Execution Plans

(JEPs).

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DSMOA vs ANGSMOA

• The ANG has participated in the DSMOA program for decades, but is currently not eligible for the majority of its restoration sites per the Office of Secretary Defense policy memo issued in November 2017.

– FY 20 NDAA Section 316 may allow ANG PFOS/PFOA sites back into the Defense Environmental Restoration Program, hence back into DSMOA with a JEP amendment that DoD would have to approve

• The ANG is committed to continuing its strong partnership and support with states by working very hard to develop a program similar to DSMOA, called ANG State Memorandum of Agreement (ANGSMOA).

• However, without resources such as access to the DSMOA portal, MOAs, funding and funding mechanisms in place, the ANG has discovered that establishing a new system is a difficult endeavor.

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ANGSMOA for New York

• The ANG and NYSDEC have negotiated a JEP that includes environmental work through Fiscal Year (FY) 21 for 4 ANG installations in NY.

• For Stewart ANGB, FY21 tasks in the JEP include:– Community outreach support (e.g., RAC, CIP)– Site 3 Annual Long Term Monitoring and Five Year Review– PFAS RI as a placeholder (if funded in FY21)

• ANG is working on a cooperative agreement to fund the state military department’s payment of regulator invoices.

• NYSDEC is working on an agreement with the state military department to establish invoicing authority.

• Hope to have ANGSMOA set up for NY in Fall 2020. 68

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RAC Questions

ANG State Memorandum of AgreementQuestions


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TIME IS UP!

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RAC Open Discussion

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RAC Open Discussion

• Opportunity for RAC members to request additional education materials and discuss topics for future meetings

• Action Items for Next Meeting• Meeting Recap

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Public Questions

Please submit questions through the Question Module.Questions will be read by the moderator.

If there is not enough time to respond to all questions, the questions will be downloaded and written

responses will be provided.

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Public questions on this presentation may be submitted to

Mary Wagner [email protected]

Questions will be accepted until Aug 19.

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Restoration Advisory Committee for Stewart Air National ...€¦ · Newburgh Clean Water Project...

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