Removal Action Workplan for Groundwater for Cintas/DeDomenico Site

Summary

SCH Number
2004088174
Lead Agency
Toxic Substances Control, Department of (Department of Toxic Substances Control)
Document Title
Removal Action Workplan for Groundwater for Cintas/DeDomenico Site
Document Type
NOE - Notice of Exemption
Received
Posted
8/10/2004

Document Description
The Department of Toxic Substances Control (DTSC) has approved a Removal Action Workplan (RAW) for the shallow groundwater that is impacted with volatile organic compounds (VOCs) above state Maximum Contaminant Levels (MCLs). The proposed removal action for the groundwater consists of institutional controls and monitoring. A deed restriction will be placed for the groundwater to restrict domestic use of the site groundwater until concentrations have decreased below state MCLs.

Contact Information
Jayantha S. Randeni
Department of Toxic Substances Control, Coastal Cleanup Operatio
700 Heinz Avenue, Suite 200
Berkeley, CA 94710

Phone : (510) 540-3806

Location

Cities
San Leandro
Counties
Alameda

Notice of Exemption

Exempt Status
Other
Type, Section or Code
General Rule sec 15061(b)(3)
Reasons for Exemption
The project will not have a significant effect on the environment because: 1. Limited fieldwork will be required in order to implement the proposed remedy. Only one new groundwater monitoring well will be installed down-gradient of the Site. 2. Groundwater monitoring will be conducted periodically. Five existing wells as well as the one new down gradient well will be used in the monitoring program. Two shallow aquifer and one intermediate aquifer well on site, along with one up-gradient and one down-gradient wells will be maintained and sampled. 3. Contamination exceeding drinking water standards in shallow groundwater appears stable and is limited to less than 22 feet deep and less than 600 feet down-gradient from the site. 4.Groundwater is expected to meet MCLs by natural attenuation. Contaminant concentrations in groundwater have decreased since completion of the soil source removal. In the unlikely event that natural attenuation is not effective, DTSC may require an additional remedy as a separate project. 5. Risk assessment concluded that current chemical concentrations in groundwater do not pose a risk to onsite workers or future residents by volatilizing from groundwater, migrating through soil and entering ambient or indoor air.

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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