Additional definitive proxy soliciting materials and Rule 14(a)(12) material

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Washington, D . C . 20549


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*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 16, 2014 Meeting Information WASTE CONNECTIONS, INC. Meeting Type: Annual Meeting For holders as of: March Date: May 16, 2014 Time: 10:00 AM CDT Location: Waste Connections, Inc. 3 Waterway Square Place Suite 110 The Woodlands, Texas 77380 You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side). R1.0.0.51160 We encourage you to access and review all of the important information contained in the proxy materials before voting. See the reverse side of this notice to obtain 0000202929_1 proxy materials and voting instructions.

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: 1. Annual Report 2. Notice & Proxy Statement How to View Online: Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX (located on the following page) and visit: How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow XXXX XXXX XXXX (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 04, 2014 to facilitate timely delivery. How To Vote Please Choose One of the Following Voting Methods Vote In Person: If you choose to vote these shares in person at the meeting, you must request a "legal proxy." To do R1.0.0.51160 so, please follow the instructions at or request a paper copy of the materials, which will contain the appropriate instructions. Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. 0000202929_2 Vote By Internet: To vote now by Internet, go to Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a voting instruction form.

Voting items The Board of Directors recommends you vote FOR the following proposal(s): 1. Election of Directors Nominees 1 Robert H. Davis The Board of Directors recommends you vote FOR the following proposal(s): 2 Ratification of the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2014. 3 Approval on a non-binding, advisory basis of the compensation of our named executive officers as disclosed in the proxy statement ("say on pay"). 4 Approval of Adoption of 2014 Incentive Award Plan. NOTE: IN THEIR DISCRETION, THE PROXIES ARE AUTHORIZED TO VOTE UPON ANY OTHER MATTER THAT MAY PROPERLY COME BEFORE THE ANNUAL MEETING OR ANY ADJOURNMENT OR POSTPONEMENT THEREOF. THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED AS DIRECTED OR, IF NO DIRECTION IS GIVEN, WILL BE VOTED FOR THE NOMINEE INPROPOSAL 1 AND FOR PROPOSALS 2, 3 AND 4. R1.0.0.51160 0000202929_3

0000202929_4 R1.0.0.51160 Voting Instructions

The above information was disclosed in a filing to the SEC. To see this filing in its entirety, click here. Waste Connections next reports earnings on April 21, 2014.

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Other recent filings from the company include the following:

Current report, items 1.01, 2.03, and 9.01 - Feb. 26, 2015
Waste Connections's Vice President just disposed of 3,884 shares - Feb. 23, 2015
Current report, item 7.01 - Feb. 20, 2015
Waste Connections's EVP & COO just disposed of 1,064 shares - Feb. 17, 2015
Waste Connections's Vice President - Tax just disposed of 328 shares - Feb. 17, 2015

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