September 30, Part Version Title V LNG Rates

Columbia Pipeline Group 5151 San Felipe, Ste 2400, Houston, Texas, USA 77056 Tel: 713.386.3776 slinder@cpg.com Sorana Linder Director, Regulated Services September 30, 2016 Ms. Kimberly D. Bose Federal Energy Regulatory Commission 888 First Street, N.E. Washington, DC 20426 Re: Columbia Gas Transmission, LLC, Docket No. RP13-606- Chesapeake LNG Update Filing Dear Ms. Bose: Pursuant to Section 4 of the Natural Gas Act ( NGA ), and Part 154 of the Federal Energy Regulatory Commission s ( Commission ) regulations, 1 Columbia Gas Transmission, LLC s ( Columbia ) hereby submits for filing the revised tariff sections to its FERC Gas Tariff, Fourth Revised Volume No. 1, to become effective November 1, 2016: Statement of Nature, Reasons and Basis Part Version Title V.16 10.0.0 LNG Rates On February 28, 2013, Columbia filed a Stipulation and Agreement of Settlement ( Settlement ) representing a collaborative resolution between Columbia and Columbia Gas of Virginia, Inc. ( CGV ), City of Richmond, Virginia ( COR ), and Virginia Natural Gas, Inc. ( VNG ) (collectively, LNG Customers ) and provided for a means to fund approximately $30 million in facility upgrades needed to extend the life of and to ensure the safe operation of Columbia s liquefied natural gas ( LNG ) plant located in Chesapeake, Virginia. Article III of the Settlement reflects an agreement to revise the Levelized LNG Rate Adder for all three LNG Customers if the actual costs of the Capital Improvements are less than $30 million. Specifically, Article III states: The Levelized LNG Rate Adder shall be adjusted downward if the actual cost of Capital Improvements installed at the Chesapeake LNG Facility is less than $30 million. To the extent a downward adjustment is necessitated, the Levelized LNG Rate Adder shall be reduced proportionately by the percentage by which the actual costs of Capital Improvements is lower than the $30 million allowance for Capital Improvements (e.g., if Columbia spends $27 million, or 10% less, the Levelized LNG Rate Adder shall be reduced by 10%). Any such reduction in the Levelized LNG Rate Adder shall incorporate any overpayments (plus the currently applicable Commissionapproved interest rate) associated with rates paid prior to the adjustment, recognizing that the initial Levelized LNG Rate Adder is to be based on the $30 million in Capital Improvements. 1 18 CFR Part 154 (2016). www.transcanada.com

On June 3, 2013, the Commission approved the Settlement and directed Columbia to file tariff records to be effective February 1, 2014. On January 31, 2014, the Commission accepted the filed tariff records. Columbia has completed the work at the Chesapeake LNG Facility and has determined that actual costs are lower than the $30 million contemplated in the Settlement. Specifically, final costs amount to $28,352,586. In accordance with Article III of the Settlement, Columbia is hereby filing updated tariff records to reflect a reduction in the Levelized LNG Rate Adder 2. Accordingly, Columbia respectfully requests that the Commission grant any waivers necessary and approve the filed tariff records to become effective November 1, 2016. Motion Pursuant to Section 154.7(a)(9) of the Commission s regulations, Columbia moves to place the proposed tariff sections into effect at the requested effective date. Request for Waiver Pursuant to Section 154.7(a)(7), Columbia respectfully requests that the Commission grant any waivers that may be necessary to accept this filing and to place the filed tariff sheets into effect as requested herein. Materials Submitted Herewith: In accordance with Section 154.7(a)(1) of the Commission s regulations, the following materials are submitted herewith: (1) Appendix A reflecting support for the rate reduction; (2) The proposed revised tariff sections being filed; and (3) Marked version of the revised tariff sections in accordance with Section 154.201(a) of the Commission s regulations. Posting and Certification of Service Pursuant to Sections 154.2(d), 154.7(b), 154.207, and 154.208(b) of the Commission s regulations, a copy of this tariff filing is being served to all of Columbia s existing customers and affected state commissions. A copy of this filing is also available for public inspections during regular business hours in a convenient form and place at Columbia s offices at 5151 San Felipe, Suite 2400, Houston, Texas, 77056. Service on Columbia Gulf It is requested that a copy of all communications, correspondence and pleadings with respect to this filing be sent to: 2 Appendix A reflects support for the updated Levelized LNG Rate Adder.

*Sorana Linder, Director, Regulated Services Columbia Gas Transmission, LLC 5151 San Felipe, Suite 2400 Houston, Texas 77056 Phone: (713) 386-3776 Email: slinder@cpg.com *William A. Sala, Jr., Senior Counsel Columbia Gas Transmission, LLC 5151 San Felipe, Suite 2400 Houston, Texas 77056 Phone: (713) 386-3743 Email: tsala@cpg.com *Persons designated for official service pursuant to Rule 2010. Conclusion Pursuant to Section 385.2005 and Section 385.2011(c)(5) of the Commission s regulations, the undersigned certified that: (1) she has read the filing and knows its contents; (2) the contents are true to the best of her knowledge and belief; and (3) the undersigned possesses full power and authority to sign the filing. Respectfully submitted, Enclosures Sorana Linder Director, Regulated Services

APPENDIX A

Columbia Gas Transmission Calculation of LNG Adder Reduction Pursuant to Article III of Chesapeake LNG Settlement Effective Rate Adders Allocation Proposed Rate Adders Demand $ 0.497 92.71% $ 0.461 Capacity $ 0.198 92.71% $ 0.184 Calculation of Allocation % Existing Cost included in LNG Adder: New Cost Actuals % of costs under original estimate Billed Overcollections + Interest Total Overcollection % Net Allocation (100% - 7.02%) $ $ 30,000,000 28,352,586 5.49% 1.80% 1/ 7.29% 92.71% 1/ See interest calculation on page 4.

Chesapeake LNG Adder Summary Line No. Contract # Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14 Sep-14 Oct-14 Nov-14 Dec-14 2014 Total (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) 1 City of Richmond 35887 Reservation $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 195,718.60 2 35887 Capacity $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 242,302.50 3 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 438,021.10 4 Columbia Gas of Virginia 35888 Reservation $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 175,545.37 5 35888 Capacity $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 680,516.10 6 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 856,061.47 7 Virginia Natural Gas 35889 Reservation $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 284,776.03 8 35889 Capacity $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 1,695,573.00 9 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 1,980,349.03 10 Total (Line 3 + Line 6 + Line 9) $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 11 5.49% Overcollections (Line 10 * 5.49%) $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 179,766.29 12 FERC Monthly Interest Rate 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 13 Calculation of Interest: $ 16,342.39 $ 16,389.78 $ 16,437.31 $ 16,484.98 $ 16,532.79 $ 16,580.73 $ 16,628.82 $ 16,677.04 $ 16,725.40 $ 16,773.91 $ 16,822.55 14 (Line 13 * Line 12) $ 47.39 $ 47.53 $ 47.67 $ 47.81 $ 47.95 $ 48.08 $ 48.22 $ 48.36 $ 48.50 $ 48.64 $ 480.16

Chesapeake LNG Adder Summary Line No. Contract # 1 City of Richmond 35887 Reservation 2 35887 Capacity 3 4 Columbia Gas of Virginia 35888 Reservation 5 35888 Capacity 6 7 Virginia Natural Gas 35889 Reservation 8 35889 Capacity 9 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 2015 Total (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 213,511.20 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 264,330.00 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 477,841.20 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 191,504.04 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 742,381.20 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 933,885.24 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 310,664.76 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 1,849,716.00 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 2,160,380.76 10 Total (Line 3 + Line 6 + Line 9) $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 11 12 13 14 5.49% Overcollections (Line 10 * 5.49%) FERC Monthly Interest Rate Calculation of Interest: (Line 13 * Line 12) $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 196,108.69 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% $ 16,871.34 $ 16,920.26 $ 16,969.33 $ 17,018.54 $ 17,067.90 $ 17,117.40 $ 17,167.04 $ 17,216.82 $ 17,266.75 $ 17,316.82 $ 17,367.04 $ 17,417.41 $ 48.79 $ 48.93 $ 49.07 $ 49.21 $ 49.35 $ 49.50 $ 49.64 $ 49.78 $ 49.93 $ 50.07 $ 50.22 $ 50.36 $ 594.85

Chesapeake LNG Adder Summary Line No. Contract # 1 City of Richmond 35887 Reservation 2 35887 Capacity 3 4 Columbia Gas of Virginia 35888 Reservation 5 35888 Capacity 6 7 Virginia Natural Gas 35889 Reservation 8 35889 Capacity 9 Jan-16 Feb-16 Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 Sep-16 Oct-16 2016 Total Grand Total (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 17,792.60 $ 177,926.00 $ 587,155.80 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 22,027.50 $ 220,275.00 $ 726,907.50 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 39,820.10 $ 398,201.00 $ 1,314,063.30 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 15,958.67 $ 159,586.70 $ 526,636.11 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 61,865.10 $ 618,651.00 $ 2,041,548.30 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 77,823.77 $ 778,237.70 $ 2,568,184.41 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 25,888.73 $ 258,887.30 $ 854,328.09 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 154,143.00 $ 1,541,430.00 $ 5,086,719.00 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 180,031.73 $ 1,800,317.30 $ 5,941,047.09 10 Total (Line 3 + Line 6 + Line 9) $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 297,675.60 $ 9,823,294.80 11 12 13 14 5.49% Overcollections (Line 10 * 5.49%) FERC Monthly Interest Rate Calculation of Interest: (Line 13 * Line 12) $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 16,342.39 $ 163,423.90 $ 539,298.88 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% 0.290% $ 17,467.92 $ 17,518.57 $ 17,569.38 $ 17,620.33 $ 17,671.43 $ 17,722.67 $ 17,774.07 $ 17,825.61 $ 17,877.31 $ 17,929.15 $ 50.51 $ 50.66 $ 50.80 $ 50.95 $ 51.10 $ 51.25 $ 51.40 $ 51.54 $ 51.69 $ 51.84 $ 511.75 $ 1,586.76 Total Overcollection + Interest (Line 11 + Line 14) $ 540,885.65 % of $30 MM 1.80%

CLEAN TARIFF SECTION

Columbia Gas Transmission, LLC FERC Tariff Fourth Revised Volume No. 1 V.16. Currently Effective Rates LNG Rates Version 10.0.0 Rates Applicable to Certain X-Rate Schedules Contained in Columbia's Original Volume No. 2 Tariff Liquefied Natural Gas X-131, X-132 and X-133 Demand $ Capacity $ Electric Power Costs Adjustment Base Rate Current Surcharge Daily Rate 0.640 0.17 0.01 0.027 0.257 0.069 0.003 0.011 LNG Electric Power Costs Adjustment Daily LNG Adder Rate 1 Current Surcharge Adder Rate Demand $ Capacity $ 0.461 0.00 0.00 0.015 0.184 0.00 0.00 0.006 1/ The LNG Adder Rate shall apply to Rate Schedules X-131, X-132, and X-133 (contained in Columbia s Original Volume No. 2 Tariff) pursuant to the Settlement approved in Docket No. RP13-606-000. Issued On: September 30, 2016 Effective On: November 1, 2016

MARKED TARIFF SECTION

Columbia Gas Transmission, LLC FERC Tariff Fourth Revised Volume No. 1 V.16. Currently Effective Rates LNG Rates Version 10.0.0 Rates Applicable to Certain X-Rate Schedules Contained in Columbia's Original Volume No. 2 Tariff Liquefied Natural Gas X-131, X-132 and X-133 Demand $ Capacity $ Electric Power Costs Adjustment Base Rate Current Surcharge Daily Rate 0.640 0.17 0.01 0.027 0.257 0.069 0.003 0.011 LNG Electric Power Costs Adjustment Daily LNG Adder Rate 1 Current Surcharge Adder Rate Demand $ Capacity $ 0.4970.461 0.00 0.00 0.0160.015 0.1980.184 0.00 0.00 0.0070.006 1/ The LNG Adder Rate shall apply to Rate Schedules X-131, X-132, and X-133 (contained in Columbia s Original Volume No. 2 Tariff) pursuant to the Settlement approved in Docket No. RP13-606-000. Issued On: September 30, 2016 Effective On: November 1, 2016