In the Summer of 2018, Lehigh began an effort to widen an existing fire access road between their quarry and the Stevens Creek Quarry.  In August 2018, the Santa Clara County Planning Department issued a Notice of Violation to Lehigh and directed Lehigh to stop widening efforts and prohibited Lehigh from using the access road for the transportation of materials.  With this access road no longer available, Lehigh and Stevens Creek Quarry began transporting the materials over City streets.  This has caused increased truck traffic on Stevens Creek and Foothill Boulevards.

A neighborhood meeting regarding this issues was held on December 19, 2018.  The City, in coordination with Lehigh Quarry, Stevens Creek Quarry and County, is exploring options to minimize traffic impacts in the area. This page has been created to provide regular updates to the residents regarding on-going coordination efforts.  

We encourage interested parties to subscribe to the “NOTIFY ME” service located on the right of this page in order to be notified immediately each time this page is updated.

Any questions regarding these updates or to contact the City with questions and/or concerns can be referred to the Acting Director of Public Works, Roger Lee, at (408) 777-3354 or

A list of Frequently Asked Questions regarding this project can be found at the right of this page.


 Santa Clara County Housing, Land Use, Environment, and Transportation Committee (HLUET) will receive a report regarding activities at Lehigh - February 21, 10:00 AM

Santa Clara County Public Information Meeting regarding Lehigh - February 28, 2019 from 7pm to 9pm at the Cupertino Community Hall (10350 Torre Avenue, Cupertino, CA)

February 1, 2019 – expected date that the County will determine if the Lehigh minor reclamation plan amendment is complete. If complete, the application will be forwarded to the State (SMARA) for consideration. The State has 60 days to review.

UPDATE 1/14/19
City had phone conversation with Supervisor Joseph Simitian on 1/16/19 regarding ongoing issues. Supervisor Simitian heard the City’s concerns and expressed confidence regarding County staffs’ ability to navigate the complexities of the minor reclamation plan amendment made by Lehigh. Supervisor Simitian did commit to responding to the letter sent to his attention December 10, 2018 from the City Manager of Cupertino. City asked that upcoming County meetings regarding any Lehigh issue be forwarded to City and that meetings be clearly posted on the County’s website so that residents may attend.

UPDATE 1/7/19
City staff met with Lehigh (Erika Guerra) and Stevens Creek Quarry (Jason Voss) on 1/7/19 as a follow up to the December 19, 2018 community meeting. City told that the number of trucks running had decreased from 40 to 27. City received letter of proposed voluntary measures from Lehigh on January 9th (this document is posted below under Lehigh Hanson Documents). City told that trucks that are equipped with automatic tarp covers will begin covering their loads. City has not received an update as to how many trucks have this tarp equipment.


City Documents:

January 31, 2019:   Letter to County Planning 

December 19, 2018: Neighborhood Meeting Agenda

    Questions and Answers

    Maps Used During Presentation

December 10, 2018: Letter to Supervisor Joseph Simitian

November 19, 2018: General Notice Posted on City Webpage

County of Santa Clara Department of Planning and Development Documents:

February 25, 2019: Notice of Violation and Public Nuisance 

February 21, 2019: County of Santa Clara HLUET Meeting Agenda

August 17, 2018:  Notice of Violation

February 8, 2011: Lehigh Vested Rights Map

Lehigh Hanson Documents 

February 5, 2019:  Letter to County in response to City letter dated January 31, 2019

 January 9, 2019:  Proposed voluntary measures in response to the December 19, 2018 Meeting

  (Note that the City is currently evaluating this letter.)

November 2018: Minor Reclamation Plan Amendment  & Application Forms

October 31 2018: Follow Up to the August 17, 2018 Notice of Violation           

Steven Creek Quarry (SCQ) Documents

 February 5, 2019: Letter to County in response to City letter dated January 31, 2019

 No documents received as of January 10, 2019.

Regional Water Quality Control Board Documents

November 8, 2018: Water Board letter to Stevens Creek Quarry

 (Note that the City had added highlights for emphasis. These highlights were not included in the original document.)