Voluntary Manufactured Gas Plant Cleanup Program Former ......aguas subterráneas de las antiguas...
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1 Voluntary Manufactured Gas Plant Cleanup Program Former Vallejo Manufactured Gas Plant Environmental Activities Update – Public Comment on Cleanup Plan Fall 2018 Background Pacific Gas and Electric Company (PG&E) is voluntarily cleaning up the site of a former manufactured gas plant (MGP) that operated from 1872 to 1930 near Curtola Parkway and Sonoma Boulevard (see map on back). This cleanup work is a significant investment in Vallejo’s waterfront and is performed in accordance with access agreements with the City and private property owners, and under the oversight of the California Department of Toxic Substances Control (DTSC). Proposed Cleanup Plan From October 22 to November 21, 2018, DTSC will allow the public to review and provide comments on PG&E’s draft cleanup plan (also known as a draft Remedial Action Plan or RAP). The plan analyzes options to remediate chemical residues found in soil, soil gas, and groundwater from former gas-making operations and recommends the following (see site map on back): • Excavation and off-site disposal of 123,500 cubic yards of impacted soil • In-place treatment of 105,000 cubic yards of deeper soil at the main site area by mixing it with stabilizing agents • Excavation and/or in-place treatment of contaminants up to a depth of 15 feet in a localized area at the North of Curtola site area • Placement of three to five feet of clean soil over treated areas to return the site to its original grade • Ongoing monitoring of groundwater to confirm that cleanup goals are achieved Work would be phased over a three-year period and at the height of operations, about 25 trucks per day will enter and exit the site (50 one-way trips or about 2 trucks per hour during 7 a.m. to 5 p.m. working hours). Once site remediation is complete, DTSC will require that land use covenants be recorded for both the City- and privately-owned parcels to document post-remediation site conditions and prohibit certain uses of the property. The proposed approach meets today’s stringent regulatory requirements for long-term protection of public health and the environment, protects groundwater and the Mare Island Strait, supports future site redevelopment, and minimizes construction impacts such as truck traffic and noise. Public Comment DTSC will inform the community of the opportunity to review and comment on the draft cleanup plan through a variety of outreach activities including a community update and a public notice advertisement in the Vallejo Times Herald. DTSC will hold a public meeting to discuss the draft cleanup plan on Wednesday, November 7 from 6:30 to 8:30 p.m. at the Florence Douglas Senior Center, 333 Amador Street, Vallejo, CA 94590. The agency will consider and respond to all comments before approving a final cleanup plan. “PG&E” refers to Pacific Gas and Electric Company, a subsidiary of PG&E Corporation. © 2010 Pacific Gas and Electric Company. All rights reserved. The former Vallejo manufactured gas plant produced gas for lighting, heating and cooking from 1872 to 1930. PG&E is working with DTSC to address historic environmental issues at the site.
Transcript of Voluntary Manufactured Gas Plant Cleanup Program Former ......aguas subterráneas de las antiguas...
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Voluntary Manufactured Gas Plant Cleanup Program Former Vallejo Manufactured Gas Plant Environmental Activities Update – Public Comment on Cleanup Plan Fall 2018
Background Pacific Gas and Electric Company (PG&E) is voluntarily cleaning up the site of a former manufactured gas plant (MGP) that operated from 1872 to 1930 near Curtola Parkway and Sonoma Boulevard (see map on back). This cleanup work is a significant investment in Vallejo’s waterfront and is performed in accordance with access agreements with the City and private property owners, and under the oversight of the California Department of Toxic Substances Control (DTSC).
Proposed Cleanup Plan
From October 22 to November 21, 2018, DTSC will allow the public to review and provide comments on PG&E’s draft cleanup plan (also known as a draft Remedial Action Plan or RAP). The plan analyzes options to remediate chemical residues found in soil, soil gas, and groundwater from former gas-making operations and recommends the following (see site map on back):
• Excavation and off-site disposal of 123,500 cubic yards of impacted soil • In-place treatment of 105,000 cubic yards of deeper soil at the main site area by mixing it with
stabilizing agents • Excavation and/or in-place treatment of contaminants up to a depth of 15 feet in a localized area at
the North of Curtola site area • Placement of three to five feet of clean soil over treated areas to return the site to its original grade • Ongoing monitoring of groundwater to confirm that cleanup goals are achieved
Work would be phased over a three-year period and at the height of operations, about 25 trucks per day will enter and exit the site (50 one-way trips or about 2 trucks per hour during 7 a.m. to 5 p.m. working hours). Once site remediation is complete, DTSC will require that land use covenants be recorded for both the City- and privately-owned parcels to document post-remediation site conditions and prohibit certain uses of the property. The proposed approach meets today’s stringent regulatory requirements for long-term protection of public health and the environment, protects groundwater and the Mare Island Strait, supports future site redevelopment, and minimizes construction impacts such as truck traffic and noise.
Public Comment DTSC will inform the community of the opportunity to review and comment on the draft cleanup plan through a variety of outreach activities including a community update and a public notice advertisement in the Vallejo Times Herald. DTSC will hold a public meeting to discuss the draft cleanup plan on Wednesday, November 7 from 6:30 to 8:30 p.m. at the Florence Douglas Senior Center, 333 Amador Street, Vallejo, CA 94590. The agency will consider and respond to all comments before approving a final cleanup plan.
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The former Vallejo manufactured gas plant produced gas for lighting, heating and cooking from 1872 to 1930. PG&E is working with DTSC to address historic environmental issues at the site.
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Voluntary Manufactured Gas Plant Cleanup Program Former Vallejo Manufactured Gas Plant Environmental Activities Update – Public Comment on Cleanup Plan Fall 2018
Site Cleanup Once DTSC approves a final cleanup plan, PG&E will prepare engineering drawings and secure permits. If the cleanup plan is approved in 2018, site cleanup is currently anticipated to begin in 2020 and will be conducted in manageable phases through 2023.
Community Protection Measures
PG&E has safely remediated over 20 MGP sites in urban areas over the past ten years. All work will be performed in a manner that is fully protective of public health and includes ongoing air monitoring, working within a fully enclosed tent in the most heavily impacted areas, careful management of project trucking activities, and regular communications to the community.
For More Information
PG&E Contacts: • Melitta Rorty, PG&E Project Manager, (925) 415-6328 or [email protected] • PG&E Response Line Number and Email: (866) 247-0581 or [email protected] • PG&E Vallejo MGP Website: www.pge.com/vallejo-mgp
DTSC Contacts:
• Asha Setty, DTSC Public Participation Specialist, (510) 540-3910 or [email protected] • DTSC EnviroStor Website: www.envirostor.dtsc.ca.gov/public
Site Map: Actual footprint of the former MGP is shown in the light blue outline; the green outline shows the entire site.
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Programa voluntario de limpieza de la planta de gas manufacturado Antigua planta de gas manufacturado de Vallejo Informe de actividades ambientales – Comentarios Públicos sobre el Plan de Limpieza Otoño de 2018
Antecedentes Pacific Gas and Electric Company (PG&E) está limpiando voluntariamente el sitio de una antigua planta de gas manufacturado (MGP) que operó de 1872 a 1930 cerca de Curtola Parkway y Sonoma Boulevard (ver mapa al dorso). El sitio es actualmente propiedad de la ciudad de Vallejo. Este trabajo de limpieza es una inversión importante en la línea costera de Vallejo y se realiza de acuerdo con los contratos de acceso de acuerdo con la ciudad y propietarios privados y bajo la supervisión del Departamento de Control de Sustancias Tóxicas de California (DTSC).
Propuesta del Plan de limpieza
Del 22 de octubre al 21 de noviembre de 2018, DTSC permitirá al público revisar y proporcionar comentarios sobre el borrador del plan de limpieza de PG&E (también conocido como un proyecto de plan de acción correctiva o RAP). El plan analiza las opciones para remediar los residuos químicos encontrados en los suelos, el gas del suelo y las aguas subterráneas de las antiguas operaciones de fabricación de gas y recomienda lo siguiente (vea el mapa al dorso):
• Excavación y eliminación de suelos impactados fuera del sitio de 123,500 yardas cúbicas • Tratamiento en el lugar de 105,000 yardas cúbicas de suelos más profundos, en el área principal del sitio,
mezclándolos con agentes estabilizantes • Excavación y/o tratamiento en el lugar de contaminantes hasta una profundidad de 15 pies en un área
localizada al norte del área del sitio de Curtola • Colocación de tres a cinco pies de suelo limpio encima de las áreas tratadas para devolver el sitio a su
grado original • Monitoreo continuo de las aguas subterráneas para confirmar que se logren los objetivos de limpieza
Los trabajos se realizarían en fases durante un período de tres años y en el pico de las operaciones, aproximadamente 25 camiones por día entrarán y saldrán del sitio (50 viajes o alrededor de 2 camiones por hora, de 7 a.m. a 5 p.m. en horas hábiles). Una vez que se complete la limpieza del sitio, el DTSC requerirá que se registren convenios de uso de la tierra, tanto de la ciudad como de las parcelas de propiedad privada, para documentar las condiciones del sitio después de la remediación y prohibir ciertos usos de la propiedad. El enfoque propuesto cumple con los requisitos estrictos reglamentarios actuales para la protección a largo plazo de la salud del público y el medio ambiente, protege las aguas subterráneas y el Estrecho de Mare Island, apoya el futuro desarrollo del sitio y minimiza los impactos de la construcción, como el tráfico de camiones y el ruido.
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La antigua planta de gas manufacturado de Vallejo producía gas para iluminación, calefacción y cocina de 1872 a 1930. PG&E está trabajando con el DTSC para abordar los problemas ambientales históricos en el sitio.
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Programa voluntario de limpieza de la planta de gas manufacturado Antigua planta de gas manufacturado de Vallejo Informe de actividades ambientales – Comentarios Públicos sobre el Plan de Limpieza Otoño de 2018
Comentarios públicos El DTSC tendrá un período de comentarios públicos de 30 días acerca del proyecto del plan de limpieza en el otoño de 2018. El período de comentarios públicos se anunciará a través de un anuncio en el Vallejo Times Herald y una hoja informativa que se enviará a los residentes, negocios e interesados del área. El DTSC considerará todos los comentarios antes de aprobar un plan de limpieza final.
Limpieza del sitio Una vez que el DTSC apruebe un plan de limpieza final, PG&E preparará planos de ingeniería y asegurará permisos. Si el plan de limpieza se aprueba en 2018, se anticipa que la limpieza del sitio comenzará en 2020 y se llevará a cabo en fases manejables hasta 2023.
Medidas de protección para la comunidad
PG&E ha remediado de manera segura más de 20 sitios de MGP en áreas urbanas durante los últimos diez años. Todo el trabajo se realizará de una manera que protegerá totalmente la salud pública. Incluyendo un monitoreo aéreo continuo, trabajando dentro de una carpa completamente cerrada en las áreas más afectadas, con un manejo cuidadoso de las actividades de transporte de camiones del proyecto y una comunicación regular a la comunidad.
Para obtener más información
Contactos de PG&E: • Melitta Rorty, Gerente de Proyectos de PG&E,
(925) 415-6328 o [email protected] • Número de teléfono y correo electrónico de la
Línea de Respuesta de PG&EE: (866) 247-0581 o [email protected]
• Sitio web de la MGP de Vallejo de PG&E: www.pge.com/vallejo-mgp
Contactos del DTSC: • Asha Setty, Especialista en Participación Pública
del DTSC, (510) 540-3910 o [email protected]
• Sitio web EnviroStor del DTSC: www.envirostor.dtsc.ca.gov/public
Mapa del Sitio: huella actual de la antigua MGP se muestra en contorno azul claro; el contorno verde muestra todo el sitio.
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