Bay Zinc Co Inc
What's New?
Last updated July 31, 2018
This site is now known as Ultra Yield Micronutrients.
Información en español abajo |
Earlier this year, several draft documents were available for public comment. These documents provide a path forward to address contamination at this site.
We received no comments and the documents are now final. These documents include:
- A legal agreement, called an Agreed Order that provides an overview of the site and the cleanup work to be done.
- A dangerous waste permit for corrective action. This document includes the 2018 Corrective Action Plan that outlines steps to be taken to address contamination.
- A public participation plan that outlines how Ecology will inform the public about this site.
Site Background
Site Contamination And Past Cleanup
Chemicals can enter the body through touching, breathing, and drinking. The contaminated soils are beneath pavement or buildings and the groundwater does not reach any surface water. There are no drinking water wells near the contamination and drinking water wells are much deeper than where the contamination is located.
Product storage and handling practices and product spills at the facility have resulted in releases of hazardous substances to the soil and groundwater.
In November 2000, the United States Environmental Protection Agency identified areas where hazardous chemicals may have been released. In August 2002, Ecology and Bay Zinc entered into a legal agreement to address contaminated soil and groundwater at the
facility.
Soil on- and off-property is contaminated with lead, cadmium, zinc, and dioxin. Between October 2002 and June 2005, Bay Zinc excavated and disposed of over 12,320 tons of contaminated soils. In all but three areas that were under buildings or pavement, soil met cleanup levels that protect people and the environment. Ecology allowed contaminated soils to remain in these areas because they pose no immediate risk. However, the soil in these areas cannot be disturbed without consulting with and receiving permission from Ecology in accordance with an environmental covenant. Groundwater on- and off-property is contaminated with cadmium, zinc, sulfate, chloride, and manganese. Since 1985, previous property owners have cleaned up and monitored groundwater. Between 2003 and 2006, Bay Zinc cleaned up groundwater using a pump-and-treat system. According to the current monitoring results, the groundwater beneath the facility remains contaminated above cleanup levels.
A Remedial Investigation/Feasibility Study report was prepared to determine the location and amounts of hazardous materials in soil and groundwater, along with alternatives that could be used to clean up the affected areas. The report also contains multiple cleanup alternatives that could be used to remove, treat, and contain the affected materials.
A Cleanup Action Plan for this site requires Bay Zinc Co. to:
- Excavate and dispose contaminated soils to an appropriate landfill.
- Remove and treat contaminated groundwater.
Cleanup
Ultra Yield and Mr. Camp are now named as permittees in the legal documents. To make sure they comply with our cleanup laws, we are revising old cleanup documents and emphasizing the cleanup work that needs to continue. Ecology believes it is in the public interest that the permittees follow the environmental covenant and continue to monitor groundwater.
What’s next for soil cleanup?
Ultra Yield and Mr. Camp will comply with the institutional control requirements listed in the facility’s environmental covenant. The soil in these areas cannot be disturbed without consulting with and receiving permission from Ecology. If any contaminated soil is excavated, such excavated soil will be properly managed and disposed of at authorized facilities. Soil used to refill excavated areas will come from uncontaminated property.
A field professional will oversee and document the work performed to:
- Ensure material is properly managed.
- Monitor health and safety procedures to assure compliance with a Health and Safety Plan.
- Test for cadmium, lead, and zinc in the excavated area(s) to document that the soil cleanup levels have been met.
Ultra Yield and Mr. Camp will use Monitored Natural Attenuation (MNA) to address groundwater contamination. MNA uses natural biological and chemical processes to break down contamination into non-toxic chemicals that do not pose a risk to human health and the environment. Ultra Yield and Mr. Camp will monitor the progress regularly and report back to Ecology. If we believe that MNA is not working as planned, we may require Ultra Yield and Mr. Camp to do more to clean up groundwater.
Antecedentes Del Sitio
Entre noviembre del 1988 a noviembre del 1998, las facilidades mantuvieron un permiso para almacenar los siguientes desechos peligrosos: polvo de molino de acero, cenizas de combustión de neumáticos, y desechos peligrosos secos y prensados conteniendo plomo y cadmio. Estos desechos eran almacenados en una pila de desechos, en tanques, y en vagones de tren. Bay Zinc paró de recibir desechos peligrosos para el 1999.
Contaminación En El Sitio Y Acciones Previas De Limpieza
Sustancias químicas pueden entrar al cuerpo al tocar, respirar, y al tomar. Los suelos contaminados están localizados por debajo del pavimento y edificios y el agua subterránea no descarga en ningún cuerpo de agua. No hay pozos de suministro de agua potable cerca de la contaminación y los pozos de suministro de agua potable suelen ser mucho más profundos que donde se encuentra la contaminación
En noviembre del año 2000, la Agencia de Protección Ambiental de los Estados Unidos (EPA, por sus siglas en inglés) identificó áreas en donde sustancias peligrosas pudiesen haber sido libradas. En Agosto del 2002, Ecología y Bay Zinc entraron en un acuerdo legal para abordar el suelo y el agua subterránea contaminada dentro de la facilidad.
Suelo dentro y fuera de la propiedad está contaminado con plomo, cadmio, zinc, y dioxano. Entre octubre del 2002 y junio del 2005, Bay Zinc excavó y desechó sobre 2,320 toneladas de suelo contaminado. Los niveles de limpieza seleccionados para los suelos son protectivos de la gente y el medio-ambiente. Se satisfacieron estos niveles en todas menos tres áreas localizadas debajo de edificios o pavimento. Ecología permitió que estos suelos contaminados permanecieran en sitio porque no presentan un riesgo inmediato. Sin embargo, los suelos en estas áreas no se pueden perturbar sin primero consultar y obtener permiso de Ecología, según sea acordado en un pacto ambiental.
Aguas subterráneas dentro y fuera de la propiedad están contaminadas con cadmio, zinc, sulfato, cloruro, y manganeso. Desde el 1985, los antiguos propietarios han limpiado y monitoreado el agua subterránea. Entre el 2003 y el 2006, Bay Zinc limpió el agua subterránea utilizando un sistema de bombeo y tratado. Conforme a los resultados al corriente, el agua subterránea bajo las facilidades permanece contaminada por encima de los niveles acordados de limpieza.
Acciones De Limpieza
Al corriente, Ultra Yield y Mr. Camp son designados como los titulares en los documentos legales. Para asegurarnos de que cumplan con nuestras leyes de limpieza, estamos revisando los documentos de limpieza viejos y enfatizando que las labores de limpieza tienen que continuar. Ecología piensa que es en el mejor interés del público que los titulares obedezcan el pacto ambiental y que continúen monitoreando el agua subterránea.
¿Qué pasará luego con la limpieza del suelo?
Ultra Yield y Mr. Camp cumplirán con los controles requeridos y detallados en el pacto ambiental de la facilidad. El suelo en estas áreas no se puede perturbar sin primero consultar y obtener permiso de Ecología. Si algún suelo contaminado es excavado, ese suelo será manejado apropiadamente y desechado en una facilidad autorizada. Suelo usado como relleno en las áreas excavadas provendrá de propiedades sin contaminación.
Un profesional de campo supervisará y documentará el trabajo realizado para:
- Asegurarse que el material es manejado apropiadamente.
- Monitorear los procedimientos de seguridad y salud para asegurarse de que están cumpliendo con el Plande Salud y Seguridad
- Correr análisis de cadmio, plomo, y zinc en las áreas excavadas para documentar que los niveles delimpieza se han cumplido.
Ultra Yield y Mr. Camp utilizarán Atenuación Natural Monitoreada (MNA, por sus siglas en inglés) para abordar la contaminación en el agua subterránea. MNA utiliza procesos químicos y biológicos naturales para descomponer la contaminación en sustancias químicas que no so tóxicas y que no representan un riesgo a la salud humana y al medio-ambiente. Ultra Yield y Mr. Camp monitorearán el progreso regularmente y le reportarán a Ecología. Si nosotros creemos que el MNA no está funcionando como planeado, es posible que le exijamos a Ultra Yield y Mr. Camp hacer más para limpiar el agua subterránea.
Site use restrictions called institutional controls are in effect
Institutional controls can be fences, signs, or restrictions on how the property is used. For instance, an institutional control may prohibit installing drinking water wells or disturbing a protective cap that isolates contamination. These restrictions keep the contamination contained and keep people from being exposed to the contamination. The controls are usually listed in environmental covenants recorded with the county.
Periodic reviews are required when institutional controls are required at a site. Ecology conducts reviews to make sure the controls remain effective and the cleanup still protects human health and the environment. We conduct periodic reviews about every five years.
Institutional Controls 1
Environmental Covenant
Restrictions/Requirements
- Prohibit Soil Disturbance
- Restrict All Ground Water Extraction/Well Installation
- Restrict Land Use
Restricted Media
- Groundwater
- Soil
Documents 10
Legal 3
Document Title | Document Date | Document Type |
2018 Agreed Order | 8/27/2018 | Agreed Order |
Bay Zinc Environmental Covenant No. 7567203 | 6/15/2007 | Environmental Covenant; Alternative Mechanism |
Bay Zinc implement CAP AO No. DE 02HWTRCR-4661 | 8/30/2002 | Agreed Order |
Public Information 2
Document Title | Document Date | Document Type |
2018 Public Participation Plan | 5/10/2018 | Public Participation Plan |
Bay Zinc RI/FS CAP fact sheet | 9/1/2002 | Fact Sheet\Public Notices |
Technical Reports 5
Document Title | Document Date | Document Type |
2021-03-25 2020 AnnualGWReport_UYM_Moxee | 3/25/2021 | Groundwater Monitoring Report |
Ultra Yield Micronutrients 2018 Progress Report | 1/18/2019 | Progress Report |
2018 Corrective Action Permit | 8/27/2018 | Site Specific Administrative Document - other (Administrative correspondence) |
Bay Zinc Cleanup Action Plan (without oversized Figure 2) | 9/29/2005 | Cleanup Action Plan |
Bay Zinc Remedial Investigation and Voluntary Cleanup Plan | 6/13/2002 | Remedial Investigation Report |
Contaminants 4
Contaminant Type | Soil |
Groundwater |
Surface Water |
Air |
Sediment |
Bedrock |
---|---|---|---|---|---|---|
Metals - Metals Priority Pollutants | C | C | ||||
Metals - Metals - Other | C | |||||
Halogenated Organics - Dioxins/Furans | S | |||||
Reactive Wastes - Corrosive Wastes | S |
- S
- Suspected
- C
- Confirmed Above Cleanup Levels
- B
- Below Cleanup Levels
- RA
- Remediated-Above
- RB
- Remediated-Below
- R
- Remediated