Former Mercury Cleaners, Removal Action Workplan


SCH Number
Public Agency
Department of Toxic Substances Control
Document Title
Former Mercury Cleaners, Removal Action Workplan
Document Type
NOE - Notice of Exemption
Document Description
Project activities detailed in the Removal Action Workplan (RAW) include a continuation of the existing combined technologies of soil vapor extraction (SVE) and air sparge (AS), and the installation of additional wells and piping for the continued removal of subsurface tetrachloroethene (PCE) at the Former Mercury Cleaners located at 23804 Mercury Road, Lake Forest (Site). The Site is contaminated with PCE due to a release from a previous dry-cleaning business. It is estimated that the SVE/AS system will operate for one (1) year and routine monitoring will be completed concurrently. Actual operation and monitoring duration may vary based on monitoring results.

Contact Information

Greg Sweel
Agency Name
Department of Toxic Substances Control
Job Title
Senior Engineering Geologist
Contact Types
Lead/Public Agency


Lake Forest
Citywide, Southern California
Cross Streets
Mercury Road and Rockfield Blvd
Other Location Info
23804 Mercury Road

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
CCR Title 14, Sec. 15330
Reasons for Exemption
1. The project is a minor action designed to prevent, minimize, stabilize, mitigate or eliminate the release or threat of release of hazardous waste or hazardous substances. 2. The project is a removal action that will not exceed $1 million in cost. 3. The project does not involve the onsite use of a hazardous waste incinerator or thermal treatment unit or the relocation of residences or businesses and does not involve the potential release into the air of volatile organic compounds as defined in Health and Safety Code Section 25123. 4. The project will be consistent with applicable state and local environmental permitting requirements. A permit will be needed from the SCAQMD for the SVE system and the OCHCA for the wells/probes. 5. The exceptions pursuant to Cal. Code Rags., tit. 14, § 15300.2 have been addressed as follows: - Cumulative Impact. The project will not result in cumulative impacts because it is designed to be a short-term, final remedy that would not lead to a succession of projects of the same type in the same place over time. - Significant Effect. The environmental safeguards and monitoring procedures that are enforceable and made a condition of project approval will prevent unusual circumstances from occurring so that there is no possibility that the project will have a significant effect on the environment. - Scenic Highways. The project will not damage scenic resources, including but not limited to, trees, historic buildings, rock outcroppings, or similar resources, because it is not located within view of a highway officially designated as a state scenic highway. - Hazardous Waste Sites. The project is not located on a site which is included on any list compiled pursuant to Section 65962.5 of the Government Code. - Historical Resources. The project is not expected to cause a substantial adverse change in the significance of a historical resource because none are anticipated; however, outreach to potentially interested Native American tribes is being conducted and every effort will be made to ensure any expressed concerns are addressed.
County Clerk


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