Document:

EX-10.4

Dear Maynard,

On December 21, 1999, CSK Auto Corporation awarded to you stock options to purchase 36,000
shares of CSK Auto common stock at an exercise price of $14.00/share with a three year vesting
schedule, which options were amended on December 18, 2006 pursuant to a letter agreement wherein
you elected to either exercise your December 21, 1999 stock options during 2007 (pursuant to the
terms and conditions therein described) or to allow them to expire unexercised at the end of 2007
(collectively, the “Option Contract”). This letter agreement, which is being entered into
contemporaneously with an amendment to your Employment Agreement, is intended to amend the exercise
period relative to such options upon your Retirement (as defined below) from the Company.
Capitalized terms not defined herein shall have the meaning ascribed to in the 1999 Employee Stock
Option Plan (“1999 Plan”).

Prior to the execution of this letter agreement, pursuant to the terms of your stock option
grant, if your relationship with the Company, its Parent and Subsidiaries as an employee terminates
for any reason (other than as a result of death or Disability), you may exercise stock options, to
the extent exercisable on the date of such termination, at any time during the 30 days commencing
six months after the date of such termination, but not thereafter.

In view of your past services, notwithstanding any other provision of the Option Contract or
the 1996 Plan relating to these options, if you cease to be an employee or director of the Company
or any subsidiary or parent of the Company by reason of retirement (provided that you have attained
the age of 65 and the sum of your age and years of service with the Company is 75 or higher)
(herein, “Retirement”), the stock options shall remain exercisable for (and, subject to federal
securities laws, including laws regarding insider trading, and any other exercise restrictions set
forth in the governing stock option plan and contract, as modified by this letter agreement, may be
exercised at any time during), and shall expire (unless exercised), six months after such
termination of employment, but in no event later than December 31, 2007. In the event of
termination for any other reason, the original terms of the Option Contract and 1999 Plan shall
govern.

In order to satisfy certain requirements under the federal tax code in connection with the
afore-described modification of your options, your signature below is deemed to be an acceptance of
CSK Auto’s offer to modify the exercise period and term for these stock options.

Please note that CSK Auto is not providing here nor will it provide tax, legal or financial
advice. You are urged to consult your own advisors in connection with taking any action with
respect to your stock options.

CSK AUTO CORPORATION

	 	 	 
	By:     

Dale Ward

Executive Vice President

	 	     

Date

	 
	 	 
	     

Maynard Jenkins

	 	     

Date

     

Tax Identification No. / Soc. Sec. No.EX-10.5

Dear Maynard,

On April 5, 2002, CSK Auto Corporation awarded to you stock options to purchase 50,000 shares
of CSK Auto common stock at an exercise price of $9.87/share with a three year vesting schedule
(the “Option Contract”). This letter agreement, which is being entered into contemporaneously with
an amendment to your Employment Agreement, is intended to amend the exercise period relative to
such options upon your Retirement (as defined below) from the Company. Capitalized terms not
defined herein shall have the meaning ascribed to in the 1996 Executive Stock Option Plan (“1996
Plan”).

Prior to the execution of this letter agreement, pursuant to the terms of your stock option
grant, if your relationship with the Company, its Parent and Subsidiaries as an employee terminates
for any reason (other than as a result of death or Disability), you may exercise stock options, to
the extent exercisable on the date of such termination, at any time during the 30 days commencing
six months after the date of such termination, but not thereafter.

In view of your past services, notwithstanding any other provision of the Option Contract or the
1996 Plan relating to these options, if you cease to be an employee or director of the Company or
any subsidiary or parent of the Company by reason of retirement (provided that you have attained
the age of 65 and the sum of your age and years of service with the Company is 75 or higher)
(herein, “Retirement”), the stock options shall remain exercisable for (and, subject to federal
securities laws, including laws regarding insider trading, and any other exercise restrictions set
forth in the governing stock option plan and contract, as modified by this letter agreement, may be
exercised at any time during), and shall expire (unless exercised), six months after such
termination of employment, but in no event later than December 31, 2007. In the event of
termination for any other reason, the original terms of the Option Contract and 1996 Plan shall
govern.

In order to satisfy certain requirements under the federal tax code in connection with the
afore-described modification of your options, your signature below is deemed to be an acceptance of
CSK Auto’s offer to modify the exercise period and term for these stock options.

Please note that CSK Auto is not providing here nor will it provide tax, legal or financial
advice. You are urged to consult your own advisors in connection with taking any action with
respect to your stock options.

CSK AUTO CORPORATION

	 	 	 
	By:     

Dale Ward

Executive Vice President

	 	     

Date

	 
	 	 
	     

Maynard Jenkins

	 	     

Date

     

Tax Identification No. / Soc. Sec. No.EX-10.1

Contract # 1013596

AMENDMENT TO SERVICE AGREEMENT

THIS AMENDMENT (“Amendment”) entered into this 20th day of March 2007 by and
between TRANSCONTINENTAL GAS PIPE LINE CORPORATION, a Delaware corporation, hereinafter referred to
as Seller, first party, and UGI UTILITIES, INC., hereinafter referred to as Buyer, second party.

WITNESSETH:

WHEREAS, Seller and Buyer entered into that certain Service Agreement dated October 1, 1996,
as amended December 2, 2002 under Seller’s Rate Schedule FT pursuant to which Seller provides firm
transportation service for Buyer of a Transportation Contract Quantity of 22,000 mcf per day
(“Service Agreement”); and

WHEREAS, Seller and Buyer desire to extend the primary term of the Service Agreement from and
after October 30, 2006; and

WHEREAS, Seller and Buyer desire to amend the Exhibit B of the Service Agreement to modify
the delivery pressure for specific points of delivery.

NOW, THEREFORE, Seller and Buyer agree as follows:

1. Article IV of the Service Agreement is hereby deleted in its entirety and replaced by the
following:

“ARTICLE IV

TERM OF AGREEMENT

This agreement shall be effective as of October 1, 1996, and shall remain in
force and effect until 9:00 am. Central Clock Time April 1, 2017 and thereafter
until terminated by Seller or Buyer upon at least twelve (12) months written
notice; provided, however, this agreement shall terminate immediately and,
subject to the receipt of necessary authorizations, if any, Seller may
discontinue service hereunder if (a) Buyer, in Seller’s reasonable judgment
fails to demonstrate credit worthiness, and (b) Buyer fails to provide adequate
security in accordance with Section 32 of the General Terms and Conditions of
Seller’s Volume No. 1 Tariff. As set forth in Section 8 of Article II of
Seller’s August 7, 1989 revised Stipulation and Agreement in Docket Nos.
RP88-68 et.al., (a) pre-granted abandonment under Section 284.221 (d) of the
Commission’s Regulations shall not apply to any long term conversions from firm
sales service to transportation service under Seller’s Rate Schedule FT and (b)
Seller shall not exercise its right to terminate this service agreement as it
applies to transportation service resulting from conversions from firm sales
service so long as Buyer is willing to pay rates no less favorable than Seller
is otherwise able to collect from third parties for such service.”

	2.	 	Exhibit B of the Service Agreement is hereby deleted in its entirety and replaced by
the Amended Exhibit B attached hereto.	 

	3.	 	Except as amended hereby, the terms and conditions of the Service Agreement shall remain in
full force and effect.	 

1

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be signed by their
respective officers or representatives, thereunto duly authorized.

	 	 	 
	By________________________

	 
	 	 
	Name:

Title:

	 	David W.Trego

President and CEO

TRANSCONTINENTAL GAS PIPE LINE CORPORATION (“Seller”)

By     

Paul F. Egner III

Director, Customer Services

2

UGI UTILITIES, INC. (“Buyer”)

AMENDED EXHIBIT B

ATTACHED AND MADE PART OF THE SERVICE AGREEMENT BY AND BETWEEN

TRANSCONTINENTAL GAS PIPE LINE CORPORATION, AS SELLER, AND UGI UTILITIES, INC. AS

BUYER, DATED OCTOBER 1, 1996, AS AMENDED DECEMBER 2, 2002 AND MARCH 20, 2007.

	 	 	 
	Point(s) of Delivery1

	 	Pressure(s)
	 

	 	 
	 
	 	 
	The Point of Interconnection between

Seller and Buyer, referred to as

Allentown Meter Station (Mount Bethel),

located on Seller’s Leidy Line, in

Northampton County, PA.

	 	Not less than five hundred

(500) pounds per square inch gauge

or such other pressures as may

be agreed upon by Buyer and Seller.

	 
	 	 
	The Point of Interconnection between

Seller and Buyer referred to as Hazleton

Meter Station (Blakeslee), located on Seller’s

	 	Not less than five hundred

(500) pounds per square inch gauge

or such other pressures as may

Leidy Line in Monroe County, PA. be agreed upon by Buyer and Seller.

	 	 	 
	The Point of Interconnection between

Seller and Buyer, referred to as

Quarryville Meter Station, located on

	 	Not less than three hundred

(300) pounds per square inch gauge

or such other pressures as may

Seller’s Main Line in Lancaster County, PA. be agreed upon by Buyer and Seller.

	 	 	 
	The Point of Interconnection between

Seller and Buyer referred to as TEVCO-

Humboldt Meter Station (Hobble), located on

	 	Not less than five hundred

(500) pounds per square inch gauge

or such other pressures as may

Seller’s Leidy Line in Luzerne County, PA. be agreed upon by Buyer and Seller.

1 Deliveries to or for the account of Buyer at
the delivery point(s) shall be subject to the limits of the Delivery Point
Entitlement (DPE’s) of the entities receiving the gas at the delivery
points, as such DPE’s are set forth in Seller’s FERC Gas Tariff, as
amended from time to time.

3

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