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Ronald van der Leeden
Regulatory Affairs
555 W. Fifth Street, GT14D6
Los Angeles, CA 90013-1011
Tel: 213.244.2009
Fax: 213.244.4957

July 10, 2019

Advice No. 5493
(U 904 G)
Public Utilities Commission of the State of California
Subject: Revision to Rule No. 30 – Transportation of Customer-Owned Gas and
Schedule No. G-BTS – Backbone Transportation Service
Southern California Gas Company (SoCalGas) hereby submits for approval by the
California Public Utilities Commission (Commission or CPUC) revisions to its Rule No.
30, Transportation of Customer-Owned Gas, and Schedule No. G-BTS, Backbone
Transportation Service, applicable throughout its service territory, as shown on
Attachment A.
The purpose of this Advice Letter (AL) is to revise Rule No. 30 and Schedule No. GBTS to: (1) remove the Questar Southern Trails (QST) North Needles Receipt Point
from the Northern Transmission Zone to conform to the abandonment of the QST
Pipeline system, effective June 17, 2019; and (2) conform to a reduction in Line 85
Transmission Zone firm capacity from 160 to 60 MMcfd, which was posted on
SoCalGas’ Electronic Bulletin Board (EBB), SoCalGas ENVOY®, effective October 8,
2018. This AL also reflects a corresponding reduction in SoCalGas’ Total
Transmission Firm Access shown in Schedule No. G-BTS from 3,875 to 3,775 MMcfd.
Rule No. 30 contains the general terms and conditions applicable to the transportation
of customer-owned gas. Schedule No. G-BTS, applicable to firm and interruptible
backbone transportation service rights to SoCalGas’ transmission system, is one of
the several schedules established to implement the Backbone Transportation Service
(BTS) and services adopted in Decision (D.) 11-04-032 by AL 4240 submitted on May
6, 2011.


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Advice No. 5493 -2- July 10, 2019 QST Abandonment On December 22, 2017, Questar filed an application with the Federal Energy Regulatory Commission (FERC) in Docket No. CP18-39-000, pursuant to section 7(b) of the Natural Gas Act, to abandon its certificate of public convenience and necessity, including its blanket certificate authorities for its Southern Trails Pipeline system. Questar also requested to abandon, part by sale and part in-place, all its certificated facilities dedicated to providing FERC jurisdictional transportation service, including approximately 488 miles of natural gas pipeline and related facilities located in California, Arizona, Utah, and New Mexico. On June 12, 2019, QST posted a critical notice on their EBB stating, that pursuant to the Implementation Plan filed under FERC Docket No. CP18-39-000, it received notice to proceed with the abandonment in place of all certificated facilities located west of the Grey Mountain block valve, including the SoCalGas North Needles delivery point and, effective June 17, 2019, QST will no longer accept nominations to this point. Line 85 Zone Reduction Line 85 is a backbone transmission line which runs from the Santa Clarita Valley north through the Grapevine and western Kern County to the Kettleman Hills in Kings County. The Line 85 Transmission Zone pipelines have served as an access point to the SoCalGas system for natural gas produced from oil and gas fields located in proximity to this part of the SoCalGas system. A 30-mile segment of Line 85 located in north Los Angeles County between Frazier Park and Castaic includes approximately 9.35 miles of pipe that was installed before 1946 and is not capable of being assessed using in-line inspection technology (i.e., is “non-piggable”). Under SoCalGas’ approved Pipeline Safety Enhancement Plan (PSEP), non-piggable pipeline segments installed before 1946 are identified for replacement.1 Pending full implementation of PSEP, the Commission requires SoCalGas to implement interim safety enhancement measures, including pressure reductions.2 SoCalGas determined it is feasible to de-rate this 30-mile segment as an interim safety enhancement measure, while continuing to provide reliable service to customers. De-rating this 30-mile segment will reduce Line 85 Transmission Zone Capacity from 160 to 60 MMcfd.3 The reduced receipt capacity in the Line 85 See D.14-06-007, Att. 1 (PSEP Decision Tree). D.11-06-017 at 19; D.14-06-007 at 6-7. 3 SoCalGas has previously provided notice that this reduction was possible via a critical notice on SoCalGas’ EBB system, posted on January 23, 2017, prior to the most recent BTS Open Season. 1 2 See
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Advice No. 5493 -3- July 10, 2019 Transmission Zone does not impact SoCalGas’ ability to receive gas at any of its other system receipt points or backbone transmission zones. Further, local transmission service to end use customers on the SoCalGas system would not be affected by this capacity reduction. Requested Revision SoCalGas requests authorization to modify Rule No. 30 and Schedule No. G-BTS to reflect: 1) the abandonment of the QST Receipt Point; and 2) a decrease to the firm receipt capacity in the Line 85 Transmission Zone of 100 MMcfd, from 160 to 60 MMcfd. This change will reduce total system firm receipt capacity by the same amount. Upon approval, SoCalGas will limit Line 85 Transmission Zone firm receipt capacity available for purchase to 60 MMcfd and will eliminate the QST Receipt Point for purchase and gas scheduling on its EBB system. Protest Anyone may protest this AL to the Commission. The protest must state the grounds upon which it is based, including such items as financial and service impact, and should be submitted expeditiously. The protest must be made in writing and received within 20 days of the date of this AL, which is July 30, 2019. The address for mailing or delivering a protest to the Commission is: CPUC Energy Division Attention: Tariff Unit 505 Van Ness Avenue San Francisco, CA 94102 A copy of the protest should also be sent via e-mail to the attention of the Energy Division Tariff Unit ( A copy of the protest shall also be sent via both e-mail and facsimile to the address shown below on the same date it is mailed or delivered to the Commission. Attn: Ray B. Ortiz Tariff Manager - GT14D6 555 West Fifth Street Los Angeles, CA 90013-1011 Facsimile No.: (213) 244-4957 E-mail: Effective Date SoCalGas believes this AL is subject to Energy Division disposition, and should be classified as Tier 2 (effective after staff approval) pursuant to General Order (GO) 96-
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Advice No. 5493 -4- July 10, 2019 B. Therefore, SoCalGas respectfully requests that this submittal become effective for service on August 9, 2019, which is 30 calendar days from the date submitted. Notice A copy of this AL is being sent to SoCalGas’ GO 96-B service list and the Commission’s service list in A.10-03-028, Firm Access Rights Update Proceeding. Address change requests to the GO 96-B service list should be directed via e-mail to or call 213-244-2837. For changes to all other service lists, please contact the Commission’s Process Office at 415-703-2021 or via e-mail at ________________________________ Ronald van der Leeden Director – Regulatory Affairs Attachment
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ADVICE LETTER SUMMARY ENERGY UTILITY MUST BE COMPLETED BY UTILITY (Attach additional pages as needed) Company name/CPUC Utility No.: Southern California Gas Company (U 904G) Utility type: ELC PLC ELC = Electric PLC = Pipeline ✔ GAS WATER HEAT Contact Person: Ray B. Ortiz Phone #: (213) 244-3837 E-mail: E-mail Disposition Notice to: EXPLANATION OF UTILITY TYPE GAS = Gas WATER = Water HEAT = Heat (Date Submitted / Received Stamp by CPUC) Tier Designation: 2 Advice Letter (AL) #: 5493 Subject of AL: Revision to Rule No. 30 - Transportation of Customer-Owned Gas and Schedule No. G-BTS - Backbone Transportation Service Keywords (choose from CPUC listing): Rules; Tariffs; Compliance AL Type: Monthly Quarterly Annual ✔ One-Time Other: If AL submitted in compliance with a Commission order, indicate relevant Decision/Resolution #: N/A Does AL replace a withdrawn or rejected AL? If so, identify the prior AL: N/A Summarize differences between the AL and the prior withdrawn or rejected AL: N/A Yes Yes ✔ No ✔ No 8/9/19 No. of tariff sheets: 7 Estimated system annual revenue effect (%): N/A Estimated system average rate effect (%): N/A When rates are affected by AL, include attachment in AL showing average rate effects on customer classes (residential, small commercial, large C/I, agricultural, lighting). Tariff schedules affected: Rule No. 30 - Transportation of Customer-Owned Gas; Schedule No. G-BTS - Backbone Transportation Service; and TOCs Service affected and changes proposed1: N/A Pending advice letters that revise the same tariff sheets: N/A 1 Discuss in AL if more space is needed. Clear Form
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Protests and all other correspondence regarding this AL are due no later than 20 days after the date of this submittal, unless otherwise authorized by the Commission, and shall be sent to: CPUC, Energy Division Attention: Tariff Unit 505 Van Ness Avenue San Francisco, CA 94102 Email: Name: Ray B. Ortiz Title: Regulatory Tariff Manager Utility Name: Southern California Gas Company Address: 555 West Fifth Street, GT14D6 City: Los Angeles State: California Telephone (xxx) xxx-xxxx: (213) 244-3837 Facsimile (xxx) xxx-xxxx: (213) 244-4957 Email: Name: SoCalGas Tariffs Title: Utility Name: Southern California Gas Company Address: 555 West Fifth Street, GT14D6 City: Los Angeles State: California Telephone (xxx) xxx-xxxx: (213) 244-2837 Facsimile (xxx) xxx-xxxx: (213) 244-4957 Email: Clear Form
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