Otay Hills Aggregate Mining and Inert Debris Engineered Landfill Operation Project

PDS2004-3300-04-004 (MUP), PDS2004-3310-04-001 (RP), PDS2010-3813-10-001 (SPA), PDS2018-BC-18-0017 (BC), Log No. 04-190-04

The Project includes a Major Use Permit (PDS2004-3300-04-004), a Reclamation Plan (PDS2004-3310-04-001), and a Specific Plan Amendment (PDS2010-3813-10-002); and a Boundary Adjustment (PDS2018-BC-18-0017).

The Project proposes a construction aggregate quarry and inert debris engineered landfill operation on an impact area of 105 acres of a 410-acre site.  The duration of the Project would be approximately 120 years and would include site preparation, extraction and processing of construction aggregate, concrete batch production, cement-treated base production, asphalt batch production, backfilling the pit with inert debris, and reclamation of the extraction areas.  Approximately 305 acres of the site would be designated as MSCP Hardline Preserve and the project requires a Major Amendment to the MSCP Subarea Plan and issuance of an amended Section 10(a)(1)(B) permit.  The maximum depth of aggregate extraction activities would be 525 feet from the existing grade. The project is in the East Otay Mesa Specific Plan Area within the Otay Subregional Planning Area of unincorporated southern portion of San Diego County.  The project footprint is located 0.5 miles east of the intersection of Otay Mesa Road and Alta Road.  The draft Environmental Impact Report identified significant environmental impacts to Noise, Land Use (Noise Element), Air Quality, Geology (Landslide Hazard), Biological Resources, Cultural Resources, Traffic/Transportation, and Paleontological Resources.  The Specific Plan Amendment proposes to amend the East Otay Mesa Specific Plan by changing the current land use designations as follows: change 33 acres of Mixed Industrial to Conservation/Limited Use; change 78 acres of Rural Residential to Mixed Industrial; and, change 189 acres of Rural Residential to Conservation/Limited Use.  Comments on this proposed draft Environmental Impact Report must be received no later than August 10, 2020 at 4:00 p.m. (a 45-day public review period).  This draft Environmental Impact Report can also be reviewed at the Planning & Development Services Project Processing Counter at 5510 Overland Avenue, Suite 110, San Diego, California 92123. 

An online/phone-in public meeting/teleconference will be held on Thursday, July 9, 2020 at 1:00 P.M. and will end by 3:00 P.M.  The meeting may be accessed at this web link: https://tinyurl.com/OtayHillsQuarry or by calling (619) 343-2539 and providing conference ID number: 685 237-335#.

Public Meeting:
An online virtual public meeting was help on Thursday, July 9, 2020 from 1:00 P.M. to 3:00 P.M. County staff provided an overview of the Draft EIR and solicited comments from those who attended the meeting.

Powerpoint Presentation Slides from July 9, 2020 Meeting

Due to the Coronavirus (COVID-19) public health emergency and for the safety of the public and staff, the Planning & Development Services lobbies are temporarily closed to the public. Planning & Development Services is continuing to provide essential services through online services. Please utilize the file links located on this website to view the environmental review documents. If needed, hard copies of the documents referenced on the website are available upon request for viewing at the drop-off counter of 5510 Overland Avenue. For further information regarding the operations of Planning and Development Services, please use the information located at the link below or contact the project manager using the contact information on this website:


Project Contact: Robert Hingtgen | Robert.Hingtgen@sdcounty.ca.gov | (858) 694-3712



PUBLIC REVIEW (June 25, 2020 - August 10, 2020)