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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.


Supervisor Joe Simitian will host a public meeting regarding operations at the Lehigh Southwest Cement / Permanente Quarry.  The meeting will be held at 7:00 PM on Thursday, February 13, 2020 at Cupertino Community Hall loacted at 10350 Torre Ave.  

UPDATE 8/1/2019

On July 31, 2019, the City of Cupertino held a Community meeting regarding Lehigh Hanson & Stevens Creek Quarry Reclamation Plan Amendments submitted to the County of Santa Clara.  A copy of the power point presentation can be viewed  here.    Several questions and comments were received.  The City is gathering information and will post responses shortly.  You may also view literature distributed by members of the public.  

UPDATE 3/12/19

On February 28th, 2019, the County of Santa Clara held a public information meeting regarding Lehigh.  The meeting video can be viewed here

UPDATE 2/21/19

At the February 21st Housing, Land Use, Environment, and Transportation Committee (HLUET) meeting of the County, Jacqueline R. Onciano, Director, Dept. of Planning and Development presented a staff report to the committee. The staff report included information that Stevens Creek Quarry was issued a Notice of Violation dated February 15th. The Notice of Violation states among many other requirements that Stevens Creek Quarry is to cease all trucking of materials from Lehigh. Director Onciano also stated that Lehigh had submitted a February 20th request to rescind their reclamation plan amendment dated November 9, 2018 relative to the construction of new haul road. In doing so, Lehigh is indicating that they do not wish to build the alternate haul road. Director Onciano additionally stated that the County is currently waiting for Lehigh to resubmit a new/revised reclamation plan amendment for the existing road that was graded w/o permits last summer. Once received, the County will process the application to determine its completeness. The County staff report for the February 21st HLUET meeting is in the “County of Santa Clara Department of Planning and Development Documents” below along with the County Notice of Violation” to Stevens Creek Quarry. The email from Lehigh to the County asking for the recension of the reclamation plan is included under “Lehigh Hanson Documents” below.

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:

May 15, 2020:  Letter to County regarding Lehigh vested rights.  

December 16, 2019:  Letter to County regarding status of Lehigh Major RPA (File No, PLN19-0106 and Utility Rd RPA (File No. PLN19-0067).

October 24, 2019:  Letter to County regarding status of Lehigh Cement Company's  Major Reclamation Plan Amendment, File No. PLN19-0106. 

August 30, 2019: Letter to Lehigh granting extension to application deadline

July 3, 2019: Letter to County Regarding Lehigh Cement

July 2, 2019: Letter to County Regarding Stevens Creek Quarry

May 28, 2019: Administrative Citation and Notice of Violation to Lehigh 

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 13, 2019:   Request to consolidate Leigh's Major Reclamation Plan Amendment applications

August 29, 2019: Notice of Complete letter

City Comment: Lehigh submitted two major reclamation plan amendments to the County. This notice of complete letter is for proposed changes to utility roads. The application for proposed changes to add an additional quarry pit, import of fill and ridge line modifications remains outstanding and incomplete.  The County finding of completeness does NOT mean this application is approved. It means that County has received the needed information to review the application and that opportunities for public input will follow.  

October 23, 2019: Letter to Stevens Creek Quarry regarding the Use Permit and Reclamation Plan Amendment Pre-Application submitted May 31, 2019

August 29, 2019: Notice of Complete Letter

July 22, 2019:  Notice of Incomplete Letter dated July 22, 2019 to Lehigh's Major Reclamation Plan Application dated May 22, 2019

June 13, 2019: Notice of Violation and Public Nuisance issued to  Lehigh Southwest Cement Company 

April 29, 2019: County letter in response to Lehigh Reclamation Plan Amendment dated March 25, 2019

February 21, 2019: Video of Santa Clara County Housing, Land Use, Environment, and Transportation

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 

 December 18, 2019:  Letter from  Harrison Temblador Hunderford & Johnson to SCC Housing, Land Use and Transportation Committee

December 18, 2019: Letter from Lehigh Hanson to SCC Planning Commission 

November 22, 2019:  Intent to Appeal to California State Mining and Geology Board

August 23, 2019: Follow up letter to City

May 31, 2019: Response to May 28, 2019 Administrative Citation and Notice of Violation

May 28, 2019: 2019 Major Reclamation Plan Amendment for Quarry Expansion

March 25, 2019:  Revised Utility Road Reclamation Plan Amendment

February 20, 2019:  Email to County from Lehigh Rescinding the RPA

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           

Stevens Creek Quarry (SCQ) Documents

May 2019: Use Permit and Reclamation Plan Amendment Pre-Application

March 7, 2019  Response to Notice of Violation

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

 No documents received as of January 10, 2019.

Bay Area Air Quality Management District Documents

Dec 3, 2019   Lehigh Cement Settlement News Release

Regional Water Quality Control Board Documents

October 11, 2019 - Notice of Stormwater Violations - Stevens Creek Quarry 

October 2, 2019:  Letter to Santa Clara County providing comments on the Lehigh's Application for Reclamation Plan Amendment. 

October 1, 2019:  Letter to Lehigh providing recognition of completion of 2019 Preliminary Closure Plans for the Permanente Quarry.

July 9, 2019:  Notice of Violation for Discharge of Wasterock issued to Lehigh

April 3, 2019 - RWQCB Tentative Order to consider the re-issuance of Lehigh Southwest Company's NPDES permit. 

March 15, 2019: Report of December 7, 2018, Inspection and Notice of Violation

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.