| Reg. Measure ID | 
                  Organization | 
                  Regulatory Measure Type | 
                  Program | 
                  Effective Date | 
                  Status | 
                
                
                  
      			   
                    
                      
                      
                        | 132325 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    10/08/2003 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 132325 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    10/08/2003 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 144761 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    05/23/1974 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 144761 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    05/23/1974 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 144830 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    04/10/1986 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 144830 | 
                      
                    
                    Southwest Gas Corporation | 
                    WDR | 
                    WDR | 
                    04/10/1986 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259421 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259414 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259414 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259421 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 260468 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 260468 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259768 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259768 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259661 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259661 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    WDR | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259483 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    CONSTW | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 259483 | 
                      
                    
                    Southwest Gas Corporation | 
                    Letter | 
                    CONSTW | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 373422 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - WDR | 
                    WDRNONMUNIPRCS | 
                    04/12/2010 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 373422 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - WDR | 
                    WDRNONMUNIPRCS | 
                    04/12/2010 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203705 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    05/02/2003 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203705 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    05/02/2003 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 420616 | 
                      
                    
                    Southwest Gas Corp | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    07/02/2018 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 430572 | 
                      
                    
                    Southwest Gas Corp | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    07/25/2019 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 396735 | 
                      
                    
                    Southwest Gas Corp | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    07/08/2014 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 360546 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 360546 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    None | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 342609 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/24/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 342609 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/24/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 340631 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/06/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 340631 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/06/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 335936 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/24/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 335936 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee - 401 Certification | 
                    CERFILLEXC | 
                    03/24/2008 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203798 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203801 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/06/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203797 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203796 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203796 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203795 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203795 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203785 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    05/23/1994 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203785 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    05/23/1994 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203782 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    09/17/1993 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203782 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    09/17/1993 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203797 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203801 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/06/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203804 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    04/30/1996 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203804 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    04/30/1996 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203715 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    07/16/2002 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203715 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    07/16/2002 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203798 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    06/22/1995 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203821 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    08/01/1997 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203821 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    08/01/1997 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203819 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    05/02/1997 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203819 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    05/02/1997 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203806 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    04/26/1996 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 203806 | 
                      
                    
                    Southwest Gas Corporation | 
                    Enrollee | 
                    CONSTW | 
                    04/26/1996 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 384219 | 
                      
                    
                    Southwest Gas Corporation | 
                    401 Certification | 
                    CERFILLEXC | 
                    09/27/2010 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 384219 | 
                      
                    
                    Southwest Gas Corporation | 
                    401 Certification | 
                    CERFILLEXC | 
                    09/27/2010 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 385159 | 
                      
                    
                    Southwest Gas Corporation | 
                    401 Certification | 
                    CERFILLEXC | 
                    03/05/2004 | 
                    Historical | 
                  
                
                  
      			   
                    
                      
                      
                        | 385159 | 
                      
                    
                    Southwest Gas Corporation | 
                    401 Certification | 
                    CERFILLEXC | 
                    03/05/2004 | 
                    Historical |