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For a description of these risks, see on page S-10 of       Public Offering    Underwriting  ' Proceeds to Dominion Energy Gas     Price (1)   Discount   Before Expenses (1) Per Senior Note   %    %    %  Total ~   ~   ~   $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/(T1% q/=PF0*8X> @b          l   S  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iBase Prospectus!Ratio of Earnings to Fixed CharCAPITALIZATION!RATIO OF EARNINGS TO FIXED (1) UNDERWRITINGU } 0} $ } } $      )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018TABLE OF CONTENTS Prospectus Supplement     Page (  About This Prospectus Supplement   S-2 + #Where You Can Find More Information   S-4 #Forward-Looking Information S-4%Prospectus Supplement Summary S-7 Risk Factors S-10Use of Proceeds S-10Capitalization S-11*"Ratio of Earnings to Fixed Charges S-12'Description of the Senior Notes S-13,$Book-Entry Procedures and Settlement S-170(Certain Material U.S. Federal Income Tax S-21+#Considerations for Non-U.S. Holders,$Underwriting (Conflicts of Interest) S-23 Legal Matters S-26Experts S-26$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/D lwk_#W?V16b=PF0*8X> @*   l  &  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iTABLE OF CONTENTS!Ratio of Earnings to Fixed CharCAPITALIZATION!RATIO OF EARNINGS TO FIXED (1) UNDERWRITINGU } 2} $ } } $      )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018Base Prospectus   Page  About This Prospectus  ~   + #Where You Can Find More Information  ~   - %Safe Harbor and Cautionary Statements  ~    The Company  ~   Risk Factors~ Use of Proceeds~ &Description of Debt Securities~ 2*Additional Terms of Senior Debt Securities~ >/'Additional Terms of Junior Subordinated~ F NotesPlan of Distribution~ J Legal Matters~ RExperts~ R$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/<yma%=G6n#=PF0*8X> @"  l  /  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iTABLE OF CONTENTSBase ProspectusCAPITALIZATION!RATIO OF EARNINGS TO FIXED (1) UNDERWRITINGU } } $ }  } $ }  } $ }  } $ }  } $ } } $ }                     )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018*"Ratio of Earnings to Fixed Charges     3 Months   12 Months  Years Ended December 31, Ended  Ended  March 31,   March 31,~  ~  ~  ~  ~ ~ ~ z ~ v~ &  Gz@  Gz@  HzG@  p= ##@  Q6@  Q2@$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/*hrfZNM?}qe==PF0*8X> @"    l  J:  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iTABLE OF CONTENTSBase Prospectus!Ratio of Earnings to Fixed Char!RATIO OF EARNINGS TO FIXED (1) UNDERWRITINGU } } $ }  } $                            )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018CAPITALIZATION    (unaudited)    March 31, 2018    (in millions)    Actual   As        AdjustedShort-term debt~  ~ Long-term debt (1)~ 7 Total equity~ CTotal capitalization~ .~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/8znbL@Ys[=PF0*8X> @j        l  KC  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iTABLE OF CONTENTSBase Prospectus!Ratio of Earnings to Fixed CharCAPITALIZATION UNDERWRITINGU } } $ }  } $ }  } $ }  } $ }  } $ } } $ }                     )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018*"RATIO OF EARNINGS TO FIXED CHARGES     3 Months   12 Months  Years Ended December 31, Ended  Ended  March 31,   March 31,~  ~  ~  ~  ~ ~ ~ z ~ v~ &  Gz@  Gz@  HzG@  p= ##@  Q6@  Q2@$____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/*hrfZNM?}qe==PF0*8X> @"    l  K  dMbP?_*+%,&٭e2?'٭e2?(٭e2?)٭e2?",D/??!Investing in the Senior Notes iTABLE OF CONTENTSBase Prospectus!Ratio of Earnings to Fixed CharCAPITALIZATION!RATIO OF EARNINGS TO FIXED (1)U } $} $      )!Dominion Energy Gas Holdings, LLC 424B5 06/14/2018 UNDERWRITING Name  Principal Amount    of the Senior Notes% Citigroup Global Markets Inc. ~   Goldman Sachs & Co. LLC    & U.S. Bancorp Investments, Inc.     Total~ $____________________________1)Created by Morningstar Document Research.0(http://documentresearch.morningstar.com/0_|pd(^ u>=PF0*8X> @:    Root Entry FBook  K  !"#$%