Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of the proposed construction of the San Diego Natural Gas Pipeline (Line 3602).
On September 30, 2015, San Diego Gas & Electric Company (SDG&E) and Southern California Gas Company (SoCalGas) (the applicants or proponents) requested a Certificate of Public Convenience and Necessity (CPCN) (Application No. A.15-09-013) from the CPUC to construct, operate, and maintain the Pipeline Safety and Reliability Project – New Natural Gas Line 3602 and De-rating Line 1600 (PSRP, or the proposed project). The CPUC regulates investor-owned public utilities in California and therefore is the agency responsible for reviewing the applicants’ CPCN application.
The CPCN application included the Proponent’s Environmental Assessment (PEA) which described the proposed project’s environmental impacts along with applicant proposed mitigation measures and alternatives to the proposed project. As part of the CPUC’s consideration of the CPCN application for the proposed project, the CPUC is conducting a review process that consists of (1) an environmental review under CEQA and (2) a project need and cost review proceeding.
The applicants propose to construct a new 36-inch natural gas pipeline (Line 3602) that would carry natural gas from SDG&E’s existing Rainbow Metering Station in Rainbow, California to land within Marine Corps Air Station (MCAS) Miramar. The proposed project also includes de-rating, or lowering the pressure of, SDG&E's existing Line 1600 to convert its function from transmission to distribution.The applicants’ primary purpose for the proposed project is to construct a new natural gas transmission pipeline and associated facilities that will advance three fundamental objectives for the integrated SDG&E and SoCalGas natural gas transmission system in San Diego County:
- Implement the pipeline safety requirements for the existing Line 1600 and modernize the system with state-of-the-art materials;
- Improve system reliability and resiliency by minimizing dependence on a single pipeline; and
- Enhance operational flexibility to manage stress conditions by increasing system capacity.
The PSRP would address these objectives by replacing the transmission capacity of the existing Line 1600 with a new 36-inch-diameter gas transmission pipeline, Line 3602.
SDG&E’s existing gas transmission system maps, including the proposed project, are shown below (Figures 2-1 and 3-2).
As the agency with jurisdiction over approval of the CPCN application, the CPUC is the “Lead Agency” for purposes of CEQA. The CPUC will prepare a Draft and Final Environmental Impact Report (EIR) to evaluate the proposed project’s potential impacts on the environment. Other regulatory agencies will work to support the CPUC Energy Division in the environmental review of the proposed project. The California Department of Fish and Wildlife (CDFW) is participating as a CEQA “Responsible Agency.” The California Department of Transportation also may participate as a CEQA “Responsible Agency.” Responsible agencies are state agencies, other than the CEQA Lead Agency (i.e., the CPUC), that are responsible for carrying out or approving the proposed project. The CDFW is also a CEQA “Trustee Agency” for the proposed project. CEQA “Trustee Agencies” are state agencies that have jurisdiction over resources that are held in trust for the people of the State of California and that would potentially be affected by the proposed project.
The CPUC reviewed the CPCN application and PEA for completeness. The CPUC deemed the PEA complete on August 23, 2016. Details pertaining to the status of and CPUC’s environmental review process can be found below in the CPUC Application Review Process section.
This site provides access to public documents and information relevant to the CEQA environmental review process. Additional project documentation will be posted as it becomes available.
The proposed project includes the following components:
- San Diego Natural Gas Pipeline (Line 3602): The approximately 47-mile proposed route extends south from the proposed Rainbow Pressure-Limiting Station, which is located approximately 50 feet south of the SDG&E’s existing Rainbow Metering Station, through the cities of Escondido, San Diego, and Poway, and unincorporated communities of San Diego County, and terminates on federal land within MCAS Miramar. Approximately 87% (approximately 41 miles of the proposed pipeline) would be installed in urban areas within existing roadways and road shoulders; the majority of the new pipeline would generally follow the alignments of U.S. Route 395, Interstate 15, and Pomerado Road. The remaining 6 miles would be installed cross-country on federal and privately owned land. The pipeline will be installed 42-inches below ground surface using conventional trenching methods in urban and cross-county areas. The pipeline would cross several major roadways, including I-15, and water features, including the San Luis Rey River, Lake Hodges, Reidy Canyon Creek, and Escondido Creek. At these crossings, horizontal directional drilling (HDD) and horizontal boring methods are proposed to reduce impacts on roadways and water features. The following aboveground facilities would also be constructed in association with proposed Line 3602:
- Mainline Valves: Ten new mainline valves are proposed approximately every five miles to stop the flow of gas during operation and maintenance, and emergency situations. Each valve would be located within the pipeline permanent easement and have a footprint of approximately 50 feet by 75 feet.
- Rainbow Pressure-Limiting Station: The proposed Rainbow Pressure-Limiting Station would be located approximately 50 feet south of the existing Rainbow Metering Station on SDG&E-owned land.
- Cross-Tie Facilities:
- Line 1601: The existing 16-inch diameter pipeline (Line 1601) cross-tie would be near MP 23 and SR-78 in the City of Escondido. The footprint is estimated to be 0.2 acres and would be enclosed by six- to eight- foot high concrete block walls.
- Line 1600: The existing 16-inch diameter pipeline (Line 1600) cross-tie would be near MP 29, Bear Valley Parkway, and Mule Hill Trail (unpaved road). The footprint is estimated to be 0.1 acres and would be enclosed by six- to eight- foot high concrete block walls.
- Line 2010: The existing 20-inch diameter pipeline (Line 2010) cross-tie would be located at the proposed project terminus on MCAS Miramar. This cross-tie would also include a pig receiver, valve control equipment, communication equipment, and a solar panel for power. The footprint is estimated to be 0.3 acres and would be enclosed by six- to eight- foot high concrete block walls.
- De-rating Line 1600: SDG&E’s Line 1600 is an existing 50-mile-long natural gas pipeline constructed in 1949 that begins at the existing Rainbow Metering Station and terminates in Mission Valley, San Diego. The applicants propose to lower the pressure of approximately 45 miles of the existing Line 1600 for use as a distribution line, once the new pipeline is constructed. Further engineering and design details regarding the distribution system modifications required to lower the operating pressure of Line 1600 and connect the proposed project with a pre-lay pipeline segment located within Pomerado Road were submitted by the applicants to the CPUC in an Amended Application and PEA Supplement dated March 21, 2016. The applicants propose to:
- Remove eight existing regulator stations that will not be replaced with other facilities;
- Remove two regulator stations that will be replaced with check valves;
- Replace one existing regulator station with a new regulator station;
- Construct three new regulator stations and connection pipelines;
- Construct an approximately 0.88-mile long, 8-inch-diameter pipeline extension (Mira Mesa Extension);
- Replace an approximately 0.70-mile-long segment of Line 49-31B with 6-inch-diameter pipe; and
- Install approximately 1.08 miles of 8-inch-diameter distribution pipeline along the pre-lay segment of pipeline within Pomerado Road.
Construction of the proposed project would begin in the third quarter of 2019 and would take approximately 15 to 21 months to complete.
The EIR will evaluate a reasonable range of alternatives to the PSRP that could achieve all or most of the objectives of the proposed project, while avoiding or reducing one or more of its significant environmental impacts. Alternatives will include a “no project” alternative. In addition to the applicants’ proposed route for Line 3602, the CPUC anticipates evaluating the route alternatives shown on the figure below in the EIR. The CPUC may develop additional alternatives for consideration and analysis based on input received during the scoping period (see Notice of Preparation and Scoping section below) or in response to potentially significant environmental impacts identified during development of the EIR.
The proposed project is located in San Diego County, California, and crosses: the cities of Escondido, San Diego, and Poway; unincorporated communities in San Diego County; and federal land (i.e. MCAS Miramar) (see Figure 1, Project Overview below). About 3.5 miles of pipeline would be located within MCAS Miramar. To view a more detailed map series of the proposed project in relation to highways and roads, please click here. To view a more detailed map series of the route alternatives the CPUC anticipates evaluating in the EIR in relation to highways and roads, please click here.
Proponent’s Environmental Assessment (PEA)
SDG&E and SoCalGas submitted their CPCN application and PEA to CPUC on September 30, 2015. The PEA includes a discussion of the proposed project’s environmental impacts, proposed mitigation measures, and alternatives to the project. A link to the application and PEA can be found in Table 1.
Deficiencies, Data Requests, Responses, and Ongoing Environmental Review
The CPUC reviewed the CPCN application and PEA for completeness. Within 30 days of the submittal of the application, the CPUC must deem the application complete, or notify the applicant of deficiencies. On October 30, 2015, December 30, 2015, and April 29, 2016, and June 22, 2016, the CPUC issued letters of deficiency (4) requesting additional information from the applicants. Additionally, per the Administrative Law Judge (“ALJ”) ruling dated January 22, 2016, an Amended Application (including a PEA Supplement and Cost Effective Analysis) was requested. Links to the deficiency requests and the applicant’s responses are found in Table 1.
The CPUC deemed the PEA complete on August 23, 2016. A link to the CPUC’s completeness letter can be found in Table 1.
On March 17, 2017, MCAS Miramar provided a letter to the CPUC and SDG&E summarizing their role in supporting the CPUC’s environmental review process for the project. On March 20, 2017, MCAS Miramar provided comments to SDG&E on alternative route alignments across federal land. Links to the MCAS Miramar letters are provided in Table 1.
On April 6, 2017 the CPUC issued Data Request No. 1 requesting additional information from the applicants. The applicants responded to Data Request No. 1 on April 21, 2017. Links to the request and the applicant’s responses are found in Table 1.
On June 8, 2017, the CPUC issued Data Request No. 2 requesting additional information from the applicants. The applicants responded to Data Request No. 2 on June 23, 2017. Links to the request and the applicant’s responses are found in Table 1.
On August 8, 2017, the CPUC issued Data Request No. 3 requesting additional information from the applicants. The applicants responded to Data Request No. 3 on August 22, 2017. Links to the request and the applicant’s responses are found in Table 1.
On August 29, 2017, the CPUC issued Data Request No. 4 requesting additional information from the applicants. The applicants responded to Data Request No. 4 on September 12, 2017, September 22, 2017, and September 29, 2017. Links to the request and the applicant’s responses are found in Table 1.
On October 17, 2017, the CPUC issued Data Request No. 5 requesting additional information from the applicants. The applicants responded to Data Request No. 5 on October 31, 2017. Links to the request and the applicant’s responses are found in Table 1.
The CPUC continues to review the project and will request additional data and information, as necessary, to review and analyze the environmental impacts of the proposed project and alternatives carried forward for detailed analysis in accordance with CEQA requirements. As the applicant’s responses to outstanding or new information gaps are provided to the CPUC, they will be provided in Table 1.
|Table 1 Environmental Documents
CPUC Environmental Review of PSRP
|CPUC Report/Request||SDG&E/SoCalGas Response||Exhibits|
|SDG&E and SoCal Gas filed a Certificate of Public Convenience and Necessity (i.e., Application No. A.15-09-013) for the San Diego Natural Gas Pipeline (Line 3602) Project
Application, Volume I of II and Appendices A through I
Application, Volume II of II (PEA)
(Submitted September 30, 2015)
(Received 11/30/2015 and 12/21/2015)
(Received 1/11/2016, 02/12/2016, and 02/16/2016)
Per Administrative Law Judge (“ALJ”) ruling dated 1/22/2016, an Amended Application was requested.
(Submitted 05/26/2016 and 8/11/2016)
|(Submitted 10/7/2016, 10/14/2016)|
|As engineering and design of the project continues, SDG&E and SolCalGas have submitted additional information to the CPUC to be considered during their environmental review under CEQA.||
Attachment A: Minor Design Refinements
Attachment C: Biological Resources Technical Report Addendum
Wetland Delineation Report-February 2017
|Data Request No. 1
|Data Response No. 1
|Exhibit B – Typical Urban ROW Cross-Section
Exhibit C – Drainage and Wetland Crossings
Exhibit E – Relinquishment of Highway ROW
Exhibit F – Relinquishment and ROW Maps
Exhibit G – Kearny Villa Alternative Layout
Exhibit H – Spring Canyon Fuel Break Vegetation Map
Exhibit J – Revised Geology Tables
Exhibit K – Revised Hazards Tables
Exhibit L – Revised Table C-1
|Data Request No. 2
|Data Response No. 2
Exhibit O – Cielo B Mitigation Map
Exhibit P – Riparian Vegetation and Waters Map
Exhibit Q – Stephen’s Kangaroo Rat Occurrences Map
|Data Request No. 3
|Data Response No. 3
Exhibit U – Daily Flow Data for Line 1600
Exhibit Y – Geology and Areas Surveyed Map
Figure Z - Revised Figure 1
|Data Request No. 4
|Data Response No. 4
(Submitted 9/12/2017, 9/22/2017, and 9/29/2017)
4.3-2 2019 Reclaimed Water Reports
4.3-2 2019 Reports
4.3-2 2020 Reclaimed Water Reports
4.3-2 2020 Reports
4.3-2 Updated AQ and GHG Results
4.4-7 Special Status Plant Species Addendum
4.4-8 BRTR Addendum
4.4-8 Wetlands and Waters Assessment
4.11-1 Noise Monitoring Results
PSRP Revised Visual Simulation
|Data Request No. 5
|Data Response No. 5
Exhibit EE – Avenue of Nations Route Alternatives Map
Exhibit HH – Results of the 2017 QCB Surveys
|Data Request No. 6
|Data Response No. 6
Data Response No. 6
Data Response No. 6
Exhibit MM – Conceptual Line 2010 Loop Resources Map
MCAS Miramar Letters
|March 17, 2017 MCAS Miramar letter summarizing their role in supporting the CPUC’s environmental review process for the project.||Rainbow to Santee Non-Miramar Alternative Map|
|March 20, 2017 MCAS Miramar letter providing comments on alternative route alignments across federal land||Figure 5-2 Proposed Project Route Segment Alternatives, Inset Map 3 of 3|
Notice of Preparation
|CPUC’s Notice of Preparation of an Environmental Impact Report for the Pipeline Safety and Reliability Project – New Natural Gas Line 3602 and De-rating Line 1600
(May 9, 2017)
|Figure 1: Project Overview
Figure 2: Typical Urban ROW Cross-Section
Figure 3: Typical Cross-Country ROW Cross-Section
Figure 4: Typical Horizontal Directional Drill
Figure 5-1: Alternatives Map
Figure 5-2: Proposed Project Route Segment Alternatives
Attachment 1, CEQA Appendix G, Environmental Checklist Form
Public Scoping Meeting Materials
|The CPUC is conducting six public scoping meetings on May 23, 24, and 25, 2017. Three fact sheets will be provided to stakeholders who attend the meeting.
Fact Sheet No. 1 of 3: Project Overview and Proposed Project Alternatives (May 2017)
Fact Sheet No. 2 of 3: CPUC Application Review Process (May 2017)
Fact Sheet No. 3 of 3: Public Scoping and Public Involvement (May 2017)
Public Scoping Meeting Presentation (given by the CPUC during the public scoping meetings May 2017)
Notice of Preparation (NOP) and Scoping
On May 9, 2017, the CPUC distributed a Notice of Preparation (NOP) to potential responsible and trustee agencies under CEQA, interested parties, and members of the public. The purpose of the NOP was to inform recipients that the CPUC began preparation of an EIR for the proposed project and to solicit information and guidance on the scope and content of the environmental information to be included in the EIR and identify potential alternatives. The NOP included a description of the project that SDG&E and SoCalGas propose to construct, information regarding project location, a summary of potential project-related impacts, the times and locations of public scoping meetings, and information on how to provide comments. The NOP was circulated for a public review and comment period that began on May 9, 2017, and ended on June 12, 2017. Links to the CPUC’s NOP and related documents are provided in Table 1.
Scoping is the process used to gather comments and input from all potential responsible and trustee agencies, all other public agencies with jurisdiction by law over the proposed project, and members of the public early in the CPUC’s environmental review process. The comments and other information provided during the scoping process will help the CPUC determine the scope, focus, and content of the EIR and identify the range of alternatives, environmental effects, and mitigation measures to analyze in the EIR.
The CPUC conducted six public scoping meetings on three dates during the EIR scoping period (see Table 2). All interested parties, including the public, responsible agencies, and trustee agencies, were invited to attend the public scoping meetings to learn more about the proposed project, ask questions, and provide comments in person about the PSRP and the scope and content of the EIR. The CPUC also provided information about the proposed project and its decision-making process at each meeting in a variety of ways including a presentation and a series of fact sheets. Links to the fact sheets that were provided to stakeholders who attended the public scoping meetings and the presentation that was given by the CPUC during the scoping meetings are provided in Table 1. The scoping period began on May 9, 2017 and ended on June 12, 2017. All public scoping comments must have been received, or postmarked if hardcopy, by June 12, 2017.
The scoping period ended on June 12, 2017.
|Table 2 CPUC Public Scoping Meetings for the PSRP|
|Tuesday, May 23, 2017*
2 PM – 4 PM
6 PM – 8 PM
Pala Mesa Resort, Ballroom
2001 Old Highway 395
Fallbrook, CA 92028
|Wednesday, May 24, 2017*
2 PM – 4 PM
6 PM – 8 PM
Park Avenue Community Center, Auditorium
210 E. Park Avenue
Escondido, CA 92025
|Thursday, May 25, 2017*
2 PM – 4 PM
6 PM – 8 PM
Alliant International University – San Diego Campus, Green Hall
10455 Pomerado Road
San Diego, CA 92131
The CPUC is preparing the Draft EIR. The Draft EIR is tentatively anticipated to be completed in the Summer of 2018. The Draft EIR will assess the proposed project’s environmental impacts, mitigation measures, project alternatives, and the environmentally superior alternative. Upon completion, the Draft EIR will be made available for public review and a 45-day public comment period. Stakeholders are encouraged to check this website frequently for changes in the Draft EIR schedule.
Public Meetings on the Draft EIR
The CPUC will hold public meetings during the 45-day comment period to discuss the Draft EIR and accept comments.
Following the closure of the Draft EIR comment period, the CPUC will prepare a Final EIR. The Final EIR will include responses to public comments received on the Draft EIR.
Administrative Law Judge’s (ALJ) Proceeding
In addition to the CPUC’s environmental review, the CPUC also appoints an ALJ to review the CPCN application with a focus on the need for and cost of the proposed project. This analysis aids the Commission in reaching a decision on the CPCN application. The CPUC’s proceedings website provides each of the CPUC ruling and decision documents associated with the proposed project. The CPUC proceedings for this project (Proceeding Number A1509013) is available by clicking here.
Upon conclusion of the project need and cost review proceeding, the ALJ will prepare a proposed decision for consideration by the CPUC commissioners, including a finding and recommendation regarding CEQA compliance. The ALJ will base the proposed decision on information collected as part of the environmental review process and the project need and cost review proceeding. The ALJ’s proposed decision is subject to a public comment period. After the public comment period, the CPUC Commissioners vote on whether to certify the EIR and adopt the ALJ’s proposed decision. The outcome of the vote will determine whether a CPCN is granted to construct the proposed project, the CPCN is denied, or an alternative to the proposed project is approved.
You may join the CPUC’s PSRP mailing list to receive project updates and notification of the dates, locations, and times for the public scoping meetings and public meetings on the Draft EIR. To be added to the CPUC’s PSRP mailing list, please click here.
The CPUC solicited comments from all potential responsible and trustee agencies, all other public agencies with jurisdiction by law over the proposed project, and members of the public regarding the topics and alternatives that should be included in the EIR. The scoping period began on May 9, 2017, and ended on June 12, 2017.
Comments must have been received, or postmarked if hardcopy, by June 12, 2017.
All comments received during scoping, including the names and addresses of those who comment, will be made part of the public record for the proposed project and may be made publicly available.
To request additional information, please contact us by email or phone, as follows:
Project email: SDgaspipeline@ene.com
Project voicemail: (844) 312-4776 (toll free)
The CPUC Project Manager is:
California Public Utilities Commission
300 Capitol Mall
Sacramento, CA 95814
For all media inquiries, contact:
Director, News and Public Information Office
California Public Utilities Commission
505 Van Ness Avenue
San Francisco, CA 94102
Main Office Line: (415) 703-1366
Main Office Email: email@example.com