Santa Ana Region - Site Cleanup Program
The Site Cleanup Program (SCP) oversees the investigation and cleanup of soil and groundwater contamination at sites that are not regulated under the Ungerground Storage Tank Program (UST). Many of these sites include former industrial facilities and dry cleaners; where releases of contaminants, such as chlorinated solvents, have impacted soil and groundwater. The SCP is administered in a manner that allows the State Water Resources Control Board (SWRCB) and Regional Water Quality Control Boards (RWQCBs) to recover reasonable costs incurred in overseeing site investigation and cleanup activities from the responsible parties. Each site is assigned a program cost account to track regulatory oversight expenditures and facilitate cost recovery.
Application Form to Request for Agency Oversight
Cost Recovery: SWRCB's Guide to the Billing Process (including monthly salary scales for RWQCB staff oversight). - Note: billing rates subject to change
GeoTracker: Information regarding specific SCP cases can be accessed via our on-line GeoTracker database
In Situ Groundwater Remediation: Information regarding In Situ Remediation Order is available below:
Proposed Site Cleanup Case Closures: For information on Site Cleanup cases proposed for closure or that have recently received closure, please click on the following link to the Cleanup Case Proposed Closures webpage.
Environmental Screening Levels (ESLs) - We utilize the ESLs developed by the San Francisco Bay Water Board to help expedite the identification and evaluation of potential environmental concerns at contaminated sites. The ESLs consist of the following components and may be found at Site Cleanup Program | San Francisco Bay Regional Water Quality Control Board, Screening Levels and Guidance
- User's Guide
- ESL Workbook
- ESL Summary Tables
- Frequently Asked Questions
Perchlorate Pollution: Investigation orders issued by the RWQCB and other documents and reports related to the ongoing perchlorate pollution
investigation within the region, are available on our Perchlorate Pollution Information Page
Orange County North Basin Regional Groundwater Plume
Former Ford Aeronutronics Facility, Newport Beach
Additional Information:
Site Cleanup program contact:
Jessica Law, Supervisor of the Underground Storage Tank/Site Cleanup Program Section, at (951) 782-4381
Mona Behrooz, Supervisor of the Site Cleanup Section, at (951) 782-3237
State Water Board’s Site Cleanup Program
Parties wishing to receive regulatory oversight for a site should apply, using the application form on the Cal/EPA, Department of Toxic Substances Control Brownfield webpage.



