Exhibit 3.548

STATE OF DELAWARE

SECRETARY OF STATE

DIVISION OF CORPORATIONS

FILED 09:00 AM 12/14/2000

001627758 - 3330104

CERTIFICATE OF FORMATION

OF

H LEASING COMPANY, LLC

1. Name. The name of the limited liability company is H Leasing Company, LLC.

2. Registered Office and Agent. The address of its registered office in the State of Delaware is 2711 Centerville Road, Suite 400, Wilmington, Delaware 19808. The name of its registered agent at such address is Corporation Service Company.

3. Authorized Person. The name and address of the authorized person is Richard B. Goldstein, Fried, Frank, Harris, Shriver & Jacobson, One New York Plaza, New York, New York 10004.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation of H Leasing Company, LLC this 14th day of December, 2000.

/s/ Richard B. Goldstein  

Richard B. Goldstein 

Authorized Person 

CERTIFICATE OF AMENDMENT

OF

H LEASING COMPANY, LLC

1. The name of the limited liability company is H Leasing Company, LLC.

2. The Certificate of Formation of the limited liability company is hereby amended as follows:

The address of its registered office in the State of Delaware is Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle. The name of its registered agent at such address is The Corporation Trust Company.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Amendment of H Leasing Company, LLC this 15^th day of February, 2001.

ALLIED WASTE NORTH AMERICA, INC., a Delaware corporation, Sole Member
By:	/s/ Steven M. Helm
	Steven M. Helm
	Vice President, Legal

STATE OF DELAWARE

SECRETARY OF STATE

DIVISION OF CORPORATIONS

FILED 02:00 PM 03/01/2001

010104717 — 3330104