Robert S. Purgason Chief Operating Officer

Exhibit 10.6.2

Xxxxxx X. Xxxxxxxx Chief Operating Officer

April 13, 2012

VIA INTEROFFICE DELIVERY

Xxxxx X. Xxxxxxx, Senior Vice-President

Chesapeake Energy Marketing, Inc.

0000 X. Xxxxxxx Xxx.

Xxxxxxxx Xxxx, XX 00000

Re: Amended and Restated Gas Gathering Agreement dated January 25, 2010 but effective February 1, 2010 (and any additional amendments thereto) (“GGA”) by and between Chesapeake Midstream Partners, L.L.C., a Delaware limited liability company (“Gatherer”), and (i) Chesapeake Energy Marketing, Inc., an Oklahoma corporation (“CEMI”), (ii) Chesapeake Operating, Inc., an Oklahoma corporation (“COl”), (iii) Chesapeake Exploration L.L.C., an Oklahoma limited liability company (“CELLC”), (iv) Chesapeake Louisiana L.P., an Oklahoma limited partnership (“CLLP”), and (v) DDJET Limited LLP, a Texas limited liability partnership (“DDJET” and together with CELLC, and CLLP, the “CHK Producers”) (CEMI, COI, and the CHK Producers are referred to herein collectively as the “Producers”)

Dear Xxx:

Gatherer and Producers agree that the First Xxxxxxx Redetermination Notice is amended from a “six-month period” to a “seven-month period”. This amendment results in the First Xxxxxxx Redetermination Notice extending until April 30, 2012 instead of March 31, 2012. All capitalized terms not defined in this letter have the meaning given to them in the GGA. Please sign below to indicate Producers’ agreement to amend the First Xxxxxxx Redetermination Notice as set forth above. All other provisions of the GGA and the Agreement will remain in full force and effect.

If (1) on or before 7am (CPT) April 15, 2012, you have not sign and returned to Gatherer this letter extending the Xxxxxxx Redetermination Notice or (2) you have signed and returned this letter by 7am (CPT) on April 15, 2012, but on or before April 30, 2012 Gatherer and Producers have not entered into a written agreement signed by all parties regarding amendment to the GGA to replace redetermination with the cost of service methodology as set forth in that certain letter dated on or about January 24, 2012, which is enclosed herewith and which was previously provided to and discussed with you, then by this letter you are hereby given notice that Gatherer wishes to redetermine the Xxxxxxx Fees and this letter is the First Xxxxxxx Redetermination Notice.

Chesapeake Midstream Partners, L.P.

P.O: Xxx 00000 — Xxxxxxxx Xxxx, XX 00000-0000 — 0000 X. Xxxxxxx Xxxxxx — Xxxxxxxx Xxxx, XX 00000

000.000.0000 — fax 000.000.0000 — xxx.xxxxxxxx@xxx.xxx

Xx. Xxxxxxx

April 13, 2012

Page 2

Sincerely,

/s/ Xxxxxx X. Xxxxxxxx

Xxxxxx X. Xxxxxxxx

Agreed and Acknowledged by Producers:

By CEMI for itself and as agent for COI and CHK Producers

By:		/s/ Xxxxx X. Xxxxxxx
Name:		Xxxxx X. Xxxxxxx
Title:		President

cc: J. Xxxxxxx Xxxxx, CEO, Chesapeake Midstream Partners, L.P.

Xxxxx X. Xxxxxx, CFO, Chesapeake Midstream Partners, L.P.

Xxxxxx Xxxxxxx, Lead Counsel, Chesapeake Midstream Partners, L.P.

Xxxxx Xxxxxxxxx, Pres. & GM, TOTAL GAS & POWER NORTH AMERICA, INC.

Xxxxxx Xxxxxxx, VP- Finance, TOTAL E& P USA, INC.