APPROVED:

Advice Letter 482 - Increase transaction fee charged by and paid to third-party vendor, effective May 1, 2013

Advice Letter 481 - Quarterly Gas Cost Rate Adjustment, effective April 1, 2013

Advice Letter 480 - Quarterly Gas Cost Rate Adjustment, effective January 1, 2013

Advice Letter 479 - Quarterly Gas Cost Rate Adjustment, effective October 1, 2012

Advice Letter 478 - General Revenues Adjustment rates, effective July 1, 2012

Advice Letter 477 - Quarterly Gas Cost Rate Adjustment, effective July 1, 2012

Advice Letter 476 - Authority to reduce third-party vendor transaction fees

Advice Letter 475 - Quarterly Gas Cost Rate Adjustment, effective April 1, 2012

Advice Letter 474 - Quarterly Gas Cost Rate Adjustment, effective January 1, 2012

Advice Letter 472 - Quarterly Gas Cost Rate Adjustment, effective October 1, 2011

Advice Letter 470 - Quarterly Base Tariff Energy Rate (BTER) adjustment, effective July 1, 2011

Advice Letter 469 - Remove language associated with Title Assignment Service from Southwest's Nevada Gas Tariff No. 7, effective July 21, 2011

Advice Letter 468 - Changes to line extension policy for gas mains and distribution service lines, effective August 10, 2011

Advice Letter 467 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective April 1, 2011

Advice Letter 466 - Removal of Tax Liability Factors from Tariff, effective January 1, 2011

Advice Letter 465 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective January 1, 2011

Advice Letter 464 - Annual Rate Adjustment (ARA), effective November 1, 2010

Advice Letter 463 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective October 1, 2010

Advice Letter 462 - Update Tax Liability Factors Used to Calculate the Federal Income Tax Liability Associated with Customer-Provided Contributions and Advances, effective July 1, 2010

Advice Letter 461 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective July 1, 2010

Advice Letter 460 - Modify Schedule Nos. SG/NG-G(S), SG/NG-G(M), SG/NG-G(L), SG/NG-G(TE), and SG/NG-AC, and SG/NG-WP to remove provision requiring certain sales customers to annually provide notice to Southwest of desire to remain on sales service

Advice Letter 458 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective May 1, 2010

Advice Letter 457 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective February 1, 2010

Advice Letter 456 - Update Tax Liability Factors Used to Calculate the Federal Income Tax Liability Associated with Customer-Provided Contributions and Advances, effective January 1, 2010

Advice Letter 455 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective November 1, 2009

Advice Letter 454 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective August 1, 2009

Advice Letter 453 - Increase transaction fee charged by and paid to third-party vendor using a credit card, effective July 15, 2009

Advice Letter 452 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective May 1, 2009

Advice Letter 450 - AMENDED - Compliance with the Commission's Order in Docket Nos. 08-03003 and 08-05010, requesting authority to establish high pressure and low pressure transportation shrinkage rates in Southern Nevada, effective May 1, 2009

Advice Letter 449 - Update Tax Liability Factors Used to Calculate the Federal Income Tax Liability Associated with Customer-Provided Contributions and Advances, effective January 1, 2009

Advice Letter 447 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective February 1, 2009

Advice Letter 445 - Deferred Energy Accounting Adjustment (DEAA) and Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective November 1, 2008

Advice Letter 444 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective October 1, 2008

Advice Letter 443 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective August 1, 2008

Advice Letter 442 - Update Rule No. 10, Service Extensions, to address requirements for Excess Flow Valves under The Pipeline Inspection, Protection, Enforcement, and Safety Act of 2006

Advice Letter 441 - Update Tax Liability Factors used to calculate the federal income tax liability associated with customer provided contributions and advances

Advice Letter 439 - Quarterly Base Tariff Energy (BTER) Adjustment, effective May 1, 2008

Advice Letter 438 - Revise Rule No. 9 (Service Extensions) and Rule No. 10 (Main Extensions) regarding Contributions in Aid of Construction, effective May 1, 2008

Advice Letter 436 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective February 1, 2008.

Amended Advice Letter No. 435 - Revise Schedule Nos SG-33 and NG-30 Street and Outdoor Lighting Gas Service to Establish Criteria for Customer Requested Service Discontinuance or Facilities Disconnection of Street and Outdoor Natural Gas Lighting

Advice Letter 434 - Deferred Energy Accounting Adjustment (DEAA) and Quarterly Base Tariff Energy (BTER) Adjustment, effective November 1, 2007

Advice Letter 433 - Quarterly Base Tariff Energy (BTER) Adjustment, effective November 1, 2007

Advice Letter 432 - Quarterly Base Tariff Energy (BTER) Adjustment, effective August 1, 2007

Advice Letter No. 431 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective May 1, 2007

Advice Letter No. 430 - Revise Rules 9 (Service Extensions) and 10 (Main Extensions) re Contributions in Aid of Construction, etc., effective June 1, 2007

Advice Letter No. 429 - Reinsertion of Footnote 3 Text, effective March 13, 2007

Advice Letter No. 428 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective February 1, 2007

Advice Letter No. 427-A - Deferred Energy Accounting Adjustment (DEAA) and Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective November 1, 2006

Advice Letter No. 426 - Quarterly Base Tariff Energy Rate (BTER) Adjustment, effective November 1, 2006