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Welcome to the New

Welcome to the City of Cupertino’s redesigned website. Explore our new look and structure, which reflect the priorities and values of our local government and community. Check out our new and updated content.

The old website, which served us well for many years, has been retired to make way for this fresh approach to the City’s internet presence.

We’d love to hear your comments and feedback on the new via our Website Redesign Satisfaction Survey as we work to continually improve the site to give you the info and tools that you need.

New Polychlorinated Biphenyls (PCB's) Management Policy

Post Date:02/06/2019 1:10 pm
Notice to Property Owners, Developers, and Contractors:

New PCBs Screening Requirements Prior to Demolition

The City of Cupertino is required by the Regional Water Board via the Municipal Regional Permit to reduce discharges of polychlorinated biphenyls (PCBs) in stormwater runoff. Applicable commercial, public, institutional, and industrial structures constructed or remodeled between January 1, 1950, and January 1, 1981, may have PCBs in materials prioritized for screening such as caulk, insulation, mastic, and window gaskets. During demolition, PCBs can be released as dust and end up in our water and air.

Applicants proposing to demolish applicable structures built or remodeled between 1950 and 1981 must conduct a PCBs screening assessment before a demolition permit will be issued. Single-family residential and wood frame structures are exempt. The screening assessment guides applicants to:

1) Determine whether the structure is likely to have building materials containing PCBs;
2) Determine whether PCBs are present at a concentration equal to or greater than 50 parts per million (ppm) in prioritized building materials of interest, which include caulk, insulation, mastic, and window gaskets. (To find a contractor to do testing, contact the Association of Environmental Contractors (AEC) at or the Association of Northern California
Environmental Consultants (ANCEC) at
3) Follow applicable federal and state laws if PCBs exist in priority building materials. This may include reporting to USEPA, the San Francisco Bay Regional Water Quality Control Board (RWQCB), and the California Department of Toxic Substances Control (DTSC). These agencies
may require additional sampling and abatement of PCBs.

Obtain screening forms and this flyer at

Questions? Please contact Environmental staff at 408-777-3354 or
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