Exhibit 10.1

FIRST AMENDMENT

THIS FIRST AMENDMENT, dated as of June 3, 2011 (this “Amendment”), amends the
Credit Agreement, dated as of November 30, 2010 (the “Credit Agreement”), among
ABM Industries Incorporated (the “Borrower”), various financial institutions
(the “Lenders”) and Bank of America, N.A., as administrative agent (in such
capacity, the “Administrative Agent”). Capitalized terms used but not otherwise
defined herein have the respective meanings ascribed thereto in the Credit
Agreement.

WHEREAS, the Borrower, the Lenders and the Administrative Agent have entered
into the Credit Agreement; and

WHEREAS, the parties hereto desire to amend the Credit Agreement as more fully
set forth herein;

NOW, THEREFORE, the parties hereto agree as follows:

SECTION 1 Amendments. Subject to the satisfaction of the conditions precedent
set forth in Section 3, the Credit Agreement is amended by amending clause
(v) of the definition of “Permitted Acquisition” in its entirety to read as
follows:

(v) both before and after giving effect to such Acquisition, the Leverage Ratio
shall not be greater than (x) for any Acquisition occurring on or prior to
June 3, 2012, 3.25 to 1.0, and (y) for any Acquisition occurring thereafter,
3.10 to 1.0, and

SECTION 2 Representations and Warranties. The Borrower represents and warrants
to the Administrative Agent and the Lenders that, after giving effect to the
effectiveness hereof:

(a) each representation and warranty set forth in Article V of the Credit
Agreement, as amended hereby is true and correct in all material respects as of
the Effective Date (as defined below), except to the extent that any such
representation and warranty specifically refers to an earlier date, in which
case it shall be true and correct in all material respects as of such earlier
date; and

(b) no Default exists.

SECTION 3 Effectiveness. This Amendment shall become effective as of the date
first written above when the Administrative Agent shall have received
counterparts of this Amendment executed by the Borrower, the Subsidiary
Guarantors and the Required Lenders (the “Effective Date”).

SECTION 4 Miscellaneous.

4.1 Continuing Effectiveness, etc. As amended hereby, the Credit Agreement shall
remain in full force and effect and is hereby ratified and confirmed in all
respects. After the effectiveness of this Amendment, all references in the
Credit Agreement and the other Loan

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Documents to “Credit Agreement” or similar terms shall refer to the Credit
Agreement as amended hereby.

4.2 Counterparts. This Amendment may be executed in any number of counterparts
and by the different parties on separate counterparts, and each such counterpart
shall be deemed to be an original but all such counterparts shall together
constitute one and the same Amendment. Delivery of an executed counterpart
hereof, or a signature page hereto, by facsimile or in a .pdf or similar file
shall be effective as delivery of an originally executed counterpart hereof.

4.3 Governing Law. This Amendment shall be governed by, and construed in
accordance with, the laws of the State of New York.

4.4 Successors and Assigns. This Amendment shall binding upon the Borrower, the
Lenders and the Administrative Agent and their respective successors and
assigns, and shall inure to the benefit of the Borrower, the Lenders and the
Administrative Agent and the respective successors and assigns of the Lenders
and the Administrative Agent.

 

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Delivered as of the day and year first above written.

 

ABM INDUSTRIES INCORPORATED By:   /s/    D. Anthony Scaglione Title:   VP,
Treasurer

 

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BANK OF AMERICA, N.A., as Administrative
Agent By:   /s/    Fani Davidson Title:   Assistant Vice President

 

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BANK OF AMERICA, N.A.,

as a Lender, as L/C Issuer

and as Swing Line Lender

By:   /s/    Ronald J. Drobny Title:   Senior Vice President

 

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JPMORGAN CHASE BANK, N.A.,

as a Lender

By:   /s/    Keith Winzenrien Title:    

 

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RBS CITIZENS, N.A.,

as a Lender

By:   /s/    Paul Darrigo Title:   Senior Vice President

 

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THE BANK OF TOKYO-MITSUBISHI UFJ,

LTD., NEW YORK BRANCH,

as a Lender

By:   /s/    M. Iarriccio Title:   Vice President

 

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WELLS FARGO BANK, NATIONAL

ASSOCIATION,

as a Lender

By:   /s/    Eric Frandson Title:   Director

 

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U.S. BANK NATIONAL ASSOCIATION,

as a Lender

By:   /s/    Michael P. Dickman Title:   Vice President

 

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KEYBANK NATIONAL ASSOCIATION,

as a Lender

By:   /s/    Frank Jancar Title:   Vice President

 

S-9

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SOVEREIGN BANK,

as a Lender

By:   /s/    Cameron Gateman Title:   SVP, Large Corp. Banking

 

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BANK OF THE WEST,

as a Lender

By:   /s/    Robert Kido Title:   Vice President

 

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PEOPLE’S UNITED BANK,

as a Lender

By:     Title:    

 

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CREDIT SUISSE AG, CAYMAN ISLANDS

BRANCH,

as a Lender

By:   /s/    Shaheen Malik Title:   Vice President

 

By:   /s/    Kevin Buddhdew Title:   Associate

 

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COMERICA BANK,

as a Lender

By:   /s/    Joey Powell Title:   Vice President

 

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FIFTH THIRD BANK,

as a Lender

By:   /s/    George B. Davis Title:   Vice President

 

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PNC BANK, N.A.,

as a Lender

By:   /s/    Eleanor Orlando Title:   Assistant Vice President

 

S-16

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HSBC BANK USA, NATIONAL ASSOCIATION,

as a Lender

By:   /s/    Jason A. Huck Title:   VP, Global Relationship Manager

 

S-17

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THE NORTHERN TRUST COMPANY,

as a Lender

By:   /s/    Daniel Boote Title:    

 

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THE BANK OF NEW YORK MELLON,

as a Lender

By:   /s/    Donald G. Cassidy, Jr. Title:   Managing Director

 

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CONFIRMATION

Dated as of June 3, 2011

To: Bank of America, N.A., individually and as Administrative Agent, and the
other financial institutions party to the Credit Agreement referred to below

Please refer to (a) the Credit Agreement, dated as of November 30, 2010 (the
“Credit Agreement”), among ABM Industries Incorporated (the “Borrower”), various
financial institutions (the “Lenders”) and Bank of America, N.A., as
administrative agent (in such capacity, the “Administrative Agent”); (b) the
Subsidiary Guaranties (as defined in the Credit Agreement) and (c) the First
Amendment dated as of the date hereof to the Credit Agreement (the “First
Amendment”).

Each of the undersigned hereby confirms to the Administrative Agent and the
Lenders that, after giving effect to the First Amendment and the transactions
contemplated thereby, the Subsidiary Guaranties continue in full force and
effect and are the legal, valid and binding obligation of such undersigned,
enforceable against such undersigned in accordance with their terms.

[Signatures begin on next page]

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ABM JANITORIAL SERVICES, INC.

ABM JANITORIAL SERVICES – MID-ATLANTIC, INC.

ABM JANITORIAL SERVICES – MIDWEST, LLC

ABM JANITORIAL SERVICES – NORTH CENTRAL, INC.

ABM JANITORIAL SERVICES – NORTHEAST, INC.

ABM JANITORIAL SERVICES – NORTHERN CALIFORNIA

ABM JANITORIAL SERVICES – NORTHWEST, INC.

ABM JANITORIAL SERVICES – SOUTH CENTRAL, INC.

ABM JANITORIAL SERVICES – SOUTHEAST, LLC

ABM JANITORIAL SERVICES – SOUTHWEST, INC.

ALLIED MAINTENANCE SERVICES, INC.

AMERICAN BUILDING MAINTENANCE CO. OF HAWAII

AMERICAN PUBLIC SERVICES

DIVERSCO, INC.

ONESOURCE FACILITY SERVICES, LLC

ONESOURCE HOLDINGS, LLC

ONESOURCE LANDSCAPE & GOLF SERVICES, INC.

SM NEWCO CORP.

SERVALL SERVICES INC.

ABM ENGINEERING SERVICES CO.

ABM FACILITY SERVICES COMPANY

ABM SHARED SERVICES, INC.

ABM SECURITY SERVICES, INC.

AMPCO-M

AMPCO SYSTEM PARKING

ELITE SECURITY, INC.

SSA SECURITY, INC.

By:   /s/    D. Anthony Scaglione Title:   VP, Treasurer

 

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