Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc., Permanente Plant, Cupertino, Santa Clara County – NPDES Permit Reissuance
Summary
SCH Number
2026060787
Public Agency
California Regional Water Quality Control Board, San Francisco Bay Region 2
(RWQCB)
Document Title
Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc., Permanente Plant, Cupertino, Santa Clara County – NPDES Permit Reissuance
Document Type
NOE - Notice of Exemption
Received
Posted
6/17/2026
Document Description
The Permanente Plant is a limestone quarry and former cement production facility that currently produces construction aggregate. The NPDES Permit reissuance (Regional Water Board Order R2-2026-0015) regulates the discharge of treated quarry dewatering water, aggregate crushing and washing water, truck and equipment wash water, and industrial stormwater from the Permanente Plant to upper Permanente Creek at the locations described above.
Contact Information
Name
John H. Madigan
Agency Name
San Francisco Bay Regional Water Quality Control Board
Job Title
Water Resource Control Engineer
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Cupertino
Counties
Santa Clara
Regions
San Francisco Bay Area
Cross Streets
24001 Stevens Creek Boulevard
Zip
95014
Notice of Exemption
Exempt Status
Statutory Exemption
Type, Section or Code
Section 13389 of the California Water Code
Reasons for Exemption
The project is the adoption of an NPDES permit.
County Clerk
Santa Clara
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.