EX-32.1 7 cwst-123117x10kex321.htm EXHIBIT 32.1
Exhibit 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
STATEMENT PURSUANT TO 18 U.S.C. §1350
Pursuant to 18 U.S.C. §1350, each of the undersigned certifies that, to his knowledge, this Annual Report on Form 10-K for the fiscal year ended December 31, 2017 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in this report fairly presents, in all material respects, the financial condition and results of operations of Casella Waste Systems, Inc.

Dated: | March 2, 2018 | /s/ John W. Casella
|  | John W. Casella
|  | Chairman and Chief Executive Officer
|  | (Principal Executive Officer)
Dated: | March 2, 2018 | /s/ Edmond R. Coletta
|  | Edmond R. Coletta
|  | Senior Vice President and Chief Financial Officer (Principal Financial Officer)
Dated: | March 2, 2018 | /s/ Christopher B. Heald
|  | Christopher B. Heald
|  | Vice President and Chief Accounting Officer (Principal Accounting Officer)