Class 2 Permit Modification to Post-Closure Permit at Rocketdyne Santa Susana Field Laboratory, Areas I and III / Boeing - Sampling and Analysis Plan
Summary
SCH Number
2004118434
Public Agency
Department of Toxic Substances Control
Document Title
Class 2 Permit Modification to Post-Closure Permit at Rocketdyne Santa Susana Field Laboratory, Areas I and III / Boeing - Sampling and Analysis Plan
Document Type
NOE - Notice of Exemption
Received
Posted
11/23/2004
Document Description
The permit modification adjusts the groundwater monitoring program for the closed surface impoundments, updates the groundwater sampling and analysis plan, and modifies the language in the post closure permit. DTSC issued a Post-Closure Hazardous Waste Facility Permit for the post closure care of five closed surface impoundments on SSFL Area I/III in April 1995 that included groundwater monitoring programs. Monitoring of the closed surface impoundments under post closure care is necessary to comply with California regulations. The permit modification designates sampling locations, including existing wells and one new well, to bring the monitoring program in compliance with current regulations. It also changes the frequency of sampling and expands the list of constituents to be sampled.
Contact Information
Name
Stephen Baxter
Agency Name
Department of Toxic Substances Control
Contact Types
Lead/Public Agency
Phone
Location
Counties
Ventura
Other Location Info
Unincorporated
Notice of Exemption
Exempt Status
Other
Type, Section or Code
Section 15061(b)(3)
Reasons for Exemption
1. The changes proposed consitute minor changes to the overall facility post closure and monitoring. Only one new well will be drilled. It will be installed in an area already impacted by industrial use, closed surface impoundments, and amidst an extensive groundwater monitoring well field consisting of over 400 monitoring wells. The other proposed wells already exist and are sampled as part of other groundwater monitoring programs.
2. The new monitoring wells will not be used for water extraction purpose and, therefore, will not impact the groundwater flow, gradient or quality, which is already impacted with industrial chemicals.
3. The groundwater throughout SSFL is not used for drinking water, nor is there a public drinking water supply nearby.
4. Changes in the GWSAP do not substantially change the groundwater monitoring that will occur at the site. They simply modify the location of some sampling points and make the sampling procedures consistent with those used throughout the facility.
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.