Exhibit 10.6.b
Mr.
David Nakles
The RETEC
Group, Inc.
One Monroeville
Center, Suite 1015
Monroeville,
PA 15146
The RETEC
Group, Inc.
300 Baker
Avenue
Concord,
MA 01742
Attn: President
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Modification
to that Certain Amended and Restated Master
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Environmental Management Services Agreement
Between
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Atlanta Gas
Light Company and The Retec Group, Inc.
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Dated
July 25, 2002 (the “Amended
Agreement”)
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Dear
Gentlemen:
Atlanta Gas Light Company (“AGLC”)
and The Retec Group, Inc. (“Retec”) hereby modify the
Amended Agreement (“2005 Modification”) as
follows:
I. Section 1
Term is hereby amended by deleting “January 31,
2005” in the second sentence and replacing it with
“December 31, 2005 except as otherwise provided
herein.”
The following is hereby added to the end of
Section 1:
“Notwithstanding the above termination
date, all work performed by Retec under the Amended Agreement and
the 2005 Modification for the Sites listed on Amended Exhibit 2 of
the Amended Agreement that is associated with or in connection to
groundwater monitoring, groundwater analysis, groundwater treatment
systems, groundwater collection systems, including all
Administrative and General, and Technical, as those terms are used
in Amended Exhibit 1 of the Amended Agreement, shall terminate on
June 30, 2005.”
II.
Section 3 Pricing and Payment Terms .
Paragraph 3.2 Compensation
is hereby deleted in its entirety,
including Amended Exhibits 3 and 4, and replaced with the following
section:
“(A) All
expenses, costs, and fees paid or incurred by Retec or for which
Retec is entitled to payment or reimbursement, and which arose on
or before January 31, 2005, and all of AGLC’s rights and
duties with respect thereto, shall be governed by the applicable
provisions of the Amended Agreement. All expenses, costs
and fees paid or incurred by Retec or for which Retec is entitled
to pay