Boeing £EPA United States Environmental Protection Agency June 2019 Corrective Measures Study & Statement of Basis The Boeing Plant 2 is a Resource Conservation and Recovery Act (RCRA) hazardous waste facility. Metals, solvents, PCBs and other contamination remain in certain areas of the facility. The Boeing Company is under a RCRA Order from the U.S. Environmental Protection Agency (EPA) to investigate and clean up Plant 2. Boeing completed cleanup of sediments (mud) and shoreline soils next to the facility in 2015. They removed 163,000 cubic yards of sediment and replaced it with clean soil. Boeing continues to monitor the quality of the sediment at the site as required by the post-construction monitoring plan. In the upland area of the facility, Boeing has completed the majority of interim soil cleanups and installed stormwater treatment systems to prevent contaminants from entering the waterway. Boeing is addressing groundwater contamination through interim measures that reduce the source of contaminants and by monitoring a series of shoreline wells. Boeing has provided EPA with their plan to complete cleanup at the remaining uplands areas, including final corrective actions for areas where interim measures have been completed. EPA wants your input on Boeing's proposal, as well as EPA's tentative decision, also known as a Statement of Basis. Why does it need to be cleaned up? Boeing Plant 2 is located on the east bank of the Lower Duwamish Waterway (LDW) at 7755 East Marginal Way South in Seattle and Tukwila, Washington. Plant 2 was built in the late 1930s and was a major aircraft manufacturing facility during World War II. PCBs from transformers and related electrical equipment, as well as from paints, caulk, and hydraulic fluids were released at Plant 2 and into the LDW. A wide range of other hazardous chemicals are found in certain areas of soil and groundwater, including metals, cyanide, petroleum products, and chlorinated solvents. When the LDW became a Superfund site, several "hot spot" areas of sediment contamination were targeted for cleanup before the larger Superfund cleanup could proceed. Boeing Plant 2 is one of these hot spot cleanups, also called Early Action Areas or EAAs. What is the plan to clean it up? The Corrective Measures Study considers a number of cleanup methods to complete cleanup of soils and groundwater in the uplands area of the facility. Final proposed remedies documented in the Statement of Basis include enhanced reductive dechlorination (ERD), ERD and excavation with off-site disposal, excavation with off-site disposal, and bioventing. EPA proposes to use an adaptive management strategy where additional data or revisions to a cleanup approach may be needed. ••••/.f.** .K—T Wildlife along the river have new habitat created during the early cleanup work at Boeing Plant 2. Boeing photo Give us your comments! Public Comment Period June 17 - August 1, 2019 EPA will consider all comments received regarding the proposed corrective action and the Statement of Basis. EPA may select the proposed corrective action, modify the proposed corrective action, select another corrective action, and/or require additional investigation based on new information or public comments. You may ask technical questions and submit written comments to: Dave Bartus, RCRA Project Coordinator U.S. EPA Region 10 1200 Sixth Avenue, Suite 900, AWT-150 Seattle, WA 98101 (206) 553-2804 • bartus.dave@epa.gov Documents available for review at: South Park Branch Seattle Public Library 8604 Eighth Avenue S. Seattle, WA 98108 (206) 615-1688 EPA Region 10 website: https://go.usa.gov/xmkbe U.S. EPA Region 10 First Floor Library 1200 Sixth Avenue Seattle, WA 98101 (206) 553-1289 A written Response to Comments will be prepared before issuing a Final Determination. ------- Boeing Phan Xtf&ng 2 ; r,, - 7 ~ Nghien Cu\j Cac Bien Phap SuTa Sai & Phat Bieu Ve Nen Tang Boeing Phan Xuang 2 la mot ca sa phe lieu doc hai theo Dao Luat Bao Ton va Phuc Hoi Nguon Tai Nguyen (Resource Conservation and Recovery Act - RCRA). Kim loai, cac chat hoa tan, PCBs va chat o nhiem khac van con tai mot so vung trong ca sa. Cong Ty Boeing hien dang dupe Lenh RCRA cua Ca Quan Bao Ve Moi Truang Hoa Ky (U.S. Environmental Protection Agency - EPA) de dieu tra va don dep Phan Xuang 2. Boeing da hoan tat don dep cac chat can (bun) va dat cat vung ba bien ke ben ca sa trong nam 2015. Ho lay di 163,000 thuac khoi Anh chat can va thay no bang dat sach. Boeing tiep tuc theo doi chat lupng chat can tai hien truang theo yeu cau cua ke hoach theo doi sau khi xay dung. u vung cao cua ca sa, Boeing da hoan tat da so cong viec don dep dat tarn thai va lap dat cac he thong xu ly nuac mua de ngan cho cac chat o nhiem khong vac dupe duang nuac. Boeing hien dang giai quyet chat o nhiem a nuac ngam qua cac bien phap tarn thai giam thieu nguon chat gay o nhiem va qua viec theo doi mot loat cac gieng nuac a ha bien. Boeing da cung cap cho EPA ke hoach cua ho ve viec hoan tat don dep tai cac vung cao con lai, bao gom cac hanh dong sua sai sau cung cho cac vung ma cac bien phap sua sai tam thai da hoan tat. EPA muon co y kien dong gop cua quy vi ve de nghi cua Boeing, cung nhu quyet dinh tam thai cua EPA, cung con dupe goi la Phat Bieu ve Co Ban. Tai sao can phai don dep? Boeing Phan Xuang 2 toa lac a bo song phfa tay cua Lower Duwamish Waterway (Ha Nguon Song Duwamish - LDW) tai 7755 East Marginal Way South a Seattle va Tukwila, Washington. Phan xirong 2 da dupe xay dung vao cuoi nhung nam 1930 va da tung la ca sa che tao may bay chinh trong thai ky The Chien thu II. PCBs tu cac may bien the va thiet bi dien co lien quan, cung nhu tu son, chat bit tret, va dich thuy dong da dupe thai ra tai Phan Xudng 2 va di vao LDW. Nhieu hoa chat doc hai khac dupe tim thay a mot so vung dat va nuac ngam, bao gom kim loai, cyanide, cac san pham dau hoa, va cac chat hoa tan bi clor hoa. Khi LDW tra thanh mot dia diem Superfund, nhieu vung "diem nong" bi nhiem chat can da dupe lam thanh muc tieu don dep truac khi co the tien hanh viec don dep Ian han cho vung Superfund. Boeing Phan Xuang 2 la mot trong cac diem nong phai dupe don dep nay, cung con dupe gpi la cac Vung Hanh Dong Sam (Early Action Areas) hoac EAAs. Ke hoach de don dep cho vung nay la gi? Cuoc Nghien Cuu Cac Bien Phap Sua Sai xet den mot so phuang phap don dep de hoan thanh don dep cho dat va nuac ngam a vung cao cua ca sd. Cac bien phap theo de nghi dupe ghi lai trong Phat Bieu ve Ca Ban (Statement of Basis) bao gom cai tien viec khu chat clor de giam bat (enhanced reductive dechlorination - ERD), ERD va dao xai de vut bo a dia diem xa, va thong khi sinh hoc. EPA de nghi dung mot sach lupc quan ly thich nghi nai co the can them du lieu hoac sua doi mot each thuc don dep. De biet them thong tin Neu quy vj co cau hoi ve Viec don dep Boeing Phan Xirong 2, xin lien lac vai Dave Bartus, Quan Ly Du An RCRA Project Manager, Ca Quan Bao Ve Moi Truang Hoa Ky • bartus.dave@epa.gov • 206.553.2.804 Be biet them thong tin ve each dong gop y kie'n cua quy vi ve viec don dep, xin lien lac vai Julie Congdon, Dieu Phoi Vien Tham Gia Cong Dong, Ca Quan Bao Ve Moi Truang • congdon.julie@epa.gov • 206.553.2752 De biet thong tin ve Cong viec cua Co" Quan Bao Ve Moi Tru'o'ng Hoa Ky a Lower Duwamish Waterway, xin den https://www.epa.gov/superfund/lower-duwamish De dupe cap nhat thu'efng xuyen ve cong trinh don dep cua EPA, xin lien lac vai Julie Congdon (congdon.julie@epa.gov) de dang ky vao danh sach gui thu dien tu cho biet ve viec don dep vung Duwamish. Theo doi chung toi tren on Facebook de dupe bao cho biet ve cac hoat dong don dep va cac chuang trinh cua chung toi co lien quan tai vung Duwamish: facebook.com/epaduwamish De biet thong tin ve Cong Trinh cua Ban Sinh Thai Washington a Lower Duwamish Waterway, xin den https://ecology.wa.gov/Spills-Cleanup/Contamination-cieanup/Cleanup-sites/Toxic-cleanup-sites/Lower-Duwamish-Waterway De biet thong tin ve Nhom Co Van Cua Cong Dong, xin lien lac vai Duwamish River Cleanup Coaiition/Technical Advisory Group (Lien Minh Don Dep Song Duwamish/Nhom Co Van Ky Thuat - DRCC/TAG) tai duwamishcleanup.org hoac contact@duwamishcleanup.org hoac 206-954-0218. V_ ] I / Gop y kien cua quy vi cho chung toi! Thdi Ky Gop Y Cua Cong Chung 17 thang 6-1 thang 8 nam 2019 EPA se xem xet moi gop y da nhan dupe ve bien phap sua sai theo de nghi va Phat Bieu ve Ca Ban. EPA co the chon bien phap sua sai theo de nghi, bo sung bien phap nay, chpn mot bien phap sua sai khac, va/hoac can dieu tra them dua tren thong tin mai nhan dupe hoac cac gop y cua cong chung. Quy vi co the hoi cac cau ve ky thuat va nop cac gop y tren van ban cho: Dave Bartus, RCRA Project Coordinator U.S. EPA Region 10 • 1200 Sixth Avenue, Suite 900, AWT-150 Seattle, WA 98101 • (206) 553-2804, bartus.dave@epa.gov Hien co tai lieu de duyet xet tai: South Park Branch U.S. EPA Region 10 Seattle Public Library First Floor Library 8604 Eighth Avenue S. 1200 Sixth Avenue Seattle, WA 98108 Seattle, WA 98101 (206) 615-1688 (206) 553-1289 EPA Khu Virc 10 trang mang: https://go.usa.gov/xmkbe. Ban tra lai cho cac gop y se dupe soan thao truac khi dua ra mot Quyet Dinh Sau Cung. ------- Planta 2 de Boeing Estudio de medidas correctivas y Declaration de base La Planta 2 de Boeing es una instalacion de residuos peligrosos en virtud de la Ley de Conservation y Recuperation de Recursos (RCRA). Los metales, solventes, bifenilos policlorados (PCB) y otra contamination permanecen en determinadas zonas de la instalacion. La empresa Boeing, conforme al pedido de la Agencia de Proteccion Ambientai (EPA) de EE. UU. en virtud de la ley RCRA, tiene por objeto investigar y iimpiar la Planta 2. Boeing completo la limpieza de los sedimentos (lodo) y suelos costeros proximos a la instalacion en el ano 2015. La empresa elimino 163 000 yardas cubicas de sedimento y las reemplazo por suelo limpio. Boeing sigue supervisando la calidad del sedimento en el sitio, segun lo requiere el plan de supervision posterior a la construction. En las zonas altas de la instalacion, Boeing completo la mayor parte de limpiezas provisionales del suelo e instaio sistemas de tratamiento de aguas piuviaies para evitar que los contaminantes ingresen al cauce. Boeing aborda la contamination de las aguas subterraneas a traves de medidas provisionales que reducen la fuente de contaminantes y a traves de la supervision de una serie de pozos costeros. Boeing le proporciono a la EPA el plan para completar la limpieza en las zonas altas restantes, incluidas medidas correctivas finales para zonas donde se completaron las medidas provisionales. EPA desea obtener su opinion sobre las propuestas de Boeing, asi como sobre la decision tentativa de la EPA, tambien conocida como Declaracion de base. iPor que se debe Iimpiar? La Planta 2 de Boeing esta ubicada en la ribera oriental del cauce inferior del rfo Duwamish (LDW) en 7755 East Marginal Way South en Seattle y Tukwila, Washington. La Planta fue construida a finales de la decada de 1930 y fue una de las principaies instalaciones de fabrication de aviones durante la Segunda Guerra Mundial, Los PCB de transformadores y equipos electricos relacionados, asi como pinturas, masillasy fluidos hidraulicos, se liberaron en la Planta 2 y en el LDW. Una amplia variedad de otros productos qulmicos peligrosos se encuentran en determinadas zonas del suelo y de las aguas subterraneas, incluidos metales, cianuro, productos petroliferos y solventes dorados. Cuando el LDW se convirtio en un sitio Superfund, varias zonas clave de contaminacion de sedimentos fueron objeto de limpieza antes de que se pudiera continuar con la limpieza mas extensa de Superfund. La Planta 2 de Boeing es una de estas limpiezas de puntos clave, tambien llamadas Areas de Action Inicial o EAA. tCual es el plan para la limpieza? El Estudio de medidas correctivas considera una cantidad de rnetodos de limpieza para completar la limpieza de los suelos y las aguas subterraneas en las zonas altas de la instalacion. Los remedies finales propuestos que se documentan en la Declaracion de base incluyen la decloracion reductiva mejorada (ERD), la excavation con desecho fuera del sitio y la bioventilacion. La EPA propone usar una estrategia de gestion adaptativa donde se necesiten revisiones o datos adicionales para un enfoque de limpieza. Como obtener mas informacion Si tiene alguna pregunta sobre la limpieza de la Planta 2 de Boeing, comuniquese con Dave Bartus, gerente del proyecto RCRA, Agencia de Proteccion Ambientai de EE. UU. • Bartus.dave@epa.gov • 206.553.2804 Para obtener mas informacion sobre el aporte de comentarios en relation con la limpieza, comuniquese con Julie Congdon, coordinadora de participation comunitaria, Agencia de Proteccion Ambientai de EE. UU. • congdon.julie@epa.gov • 206.553.2752 Para obtener informacion sobre el trabajo de la Agencia de Proteccion Ambientai de EE. UU. en el cauce inferior del rio Duwamish, visite: https://www.epa.gov/superfund/lower-duwamish Si desea recibir informes periodicos sobre el trabajo de limpieza de la EPA, envfe un mensaje por correo electronico a Julie Congdon (congdon.juiie@epa.gov) para suscribirse a Duwamish cleanup listserv (lista de correo de limpieza dei no Duwamish). Siganos en Facebook para mantenerse informado sobre nuestras actividades de limpieza y nuestros programas relacionados con el area de Duwamish: facebook.com/epaduwamish Para obtener informacion sobre el trabajo del Departamento de Ecologia de Washington en el cauce inferior del rio Duwamish, visite: https://ecology.wa.gov/Spills-Cleanup/Contamination-cleanup/Cleanup-sites/Toxic-cleanup-sites/Lower-Duwamish-Waterway Para obtener informacion sobre el Grupo Asesor de la Comunidad, comuniquese con la Coalition para la Limpieza del Rio Duwamish/Grupo Asesor Tecnico (DRCC/TAG) a traves de duwamishcleanup.org o bien envie un mensaje por correo electronico a contact@duwamishcleanup.org o Name al 206-954-0218. i jEnvienos sus comentarios! Periodo de comentarios del publico 17 de junio - 1 de agosto, 2019 EPA considerara todos los comentarios recibidos sobre las medidas correctivas propuestas y la Declaracion de base. EPA puede seleccionar la medida correctiva propuesta, modificar la medida correctiva propuesta, seleccionar otra medida correctiva y/o requerir mayor investigation en base a nueva informacion o comentarios publicos. Puede realizar preguntas tecnicas y enviar comentarios por escrito a: Dave Bartus, coordinador del proyecto RCRA EPA de EE. UU., Region 10 • 1200 Sixth Avenue, Suite 900, AWT-150 Seattle, Washington 98101 • (206) 553-2804, bartus.dave@epa.gov Documentos disponibles para consultar en: Biblioteca publica de Seattle Sucursal South Park 8604 Eighth Avenue S. Seattle, Washington 98108 (206) 615-1688 EPAde EE. UU., Region 10 First Floor Library 1200 Sixth Avenue Seattle, Washington 98101 (206) 553-1289 Sitio web de la EPA Region 10: https://go.usa.gov/xmkbe. Se redactara una respuesta por escrito a sus comentarios antes de emitir una decision final. ------- For more information If you have questions about the Boeing Plant 2 cleanup, please contact Dave Bartus, RCRA Project Manager, US Environmental Protection Agency • Bartus.dave@epa.gov • 206-553-2804 For more information on how to give your input on the cleanup, please contact Julie Congdon, Community Involvement Coordinator, US Environmental Protection Agency • congdon.julie@epa.gov • 206-553.2752 For information on US Environmental Protection Agency's work in the Lower Duwamish Waterway, please visit: https://www.epa.gov/superfund/lower-duwamish To receive regular updates on EPA's cleanup work, please contact Julie Congdon (congdon.julie@epa.gov) to subscribe to the Duwamish cleanup listserv. Follow us on Facebook to stay informed about our cleanup activities and our programs related to the Duwamish area: facebook.com/epaduwamish For information on Washington Department of Ecology's work in the Lower Duwamish Waterway, please visit: https://ecology.wa.gov/Spills-Cleanup/Contamination-cleanup/Cleanup-sites/Toxic-cleanup-sites/Lower-Duwamish-Waterway For information on the Community Advisory Group, please contact the Duwamish River Cleanup Coalition/Technical Advisory Group (DRCC/TAG) at duwamishcleanup.org or contact@duwamishcleanup.org or 206-954-0218. If you need materials in an alternative format, please contact Julie Congdon at 800-424-4372, ext. 2752 ~ TDD or TTY users, please call 800-877-8339 and give the operator Julie's phone number. \ Thank you so much for your interest and involvement! Cam cfn quy vi rat nhieu ve stf Itfu tarn va tham gia cua quy vi! \Le agradecemos por su interes y participation! 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