exhibit 4. 27 nineteenth supplemental indenture nineteenth supplemental indenture, dated as of december 2, 2008 ( the “ nineteenth supplemental indenture ” ) among allied waste north america, inc., a delaware corporation ( the “ company ” ), having its principal place of business at 18500 north allied way, phoenix, arizona 85054, allied waste industries, inc., a corporation duly organized and existing under the laws of the state of delaware ( “ allied ” or the “ parent guarantor ” ), each of the other guarantors signatory hereto ( collectively with the parent guarantor, the “ guarantors ” ) and u. s. bank national association, a national banking association, as trustee ( the “ trustee ” ). witnesseth : whereas, the company, allied, the subsidiary guarantors party thereto and the trustee executed and delivered an indenture, dated as of december 23, 1998 ( the “ indenture ” ), to provide for the issuance by the company from time to time of debt securities evidencing its indebtedness ( the “ securities ” ) ; whereas, pursuant to resolutions adopted by the board of directors of the company, the company issued ( i ) $ 450, 000, 000 aggregate principal amount of its 7 - 7 / 8 % senior notes due 2013 pursuant to a tenth supplemental indenture, dated as of april 9, 2003 ( the “ 2013 notes ” ), ( ii ) $ 350, 000, 000 aggregate principal amount of its 6. 5 % senior notes due 2010 pursuant to a eleventh supplemental indenture, dated as of november 10, 2003 ( the “ 2010 notes ” ), ( iii ) $ 400, 000, 000 aggregate principal amount of its 5 - 3 / 4 % senior notes due 2011 pursuant to a twelfth supplemental indenture, dated as of january 27, 2004 ( the “ first 2011 notes ” ), ( iv ) $ 425, 000, 000 aggregate principal amount of its 6 - 1 / 8 % senior notes due 2014 pursuant to a thirteenth supplemental indenture, dated as of january 27, 2004 ( the “ first 2014 notes ” ), ( v ) $ 400, 000, 000 aggregate principal amount of its 7 - 3 / 8 % senior unsecured notes due 2014 pursuant to a fourteenth supplemental indenture, dated as of april 20, 2004 ( the “ second 2014 notes ” ), ( vi ) $