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oWashington Group International Integrated Engineering, Construction, and Management Solutions November 11,2004 Invoice No. 1143924 ADS 2396·04 27514.000 Mr. Jim Pierce Assistant Director
ofPublic Works Town ofAddison 16801 Westgrove Drive Addison, TX 75001·9010 Dear Mr. Pierce: In accordance with Technical Services Contract Agreement dated January, 2004 for us to provide
engineering services for Bulk Fuel Storage and Dispensing System at Addison Airport, Addison, Texas submitted herewith is our request for payment for services rendered through October
29, 2004. The amount due is as follows: To insure proper credit. please Include the following job numbers on your check. Contract Percent Amount Previous Current Maximum Complete to
Date Amount Invoice Planning & Studies $33,947.50 100% $33,947.50 Engineering & Design 81,219.50 90% 73,097.55/Construction Management 14.434.00 0% 0.00 Total 129,601.00 TOTAL AMOUNT
DUE • tbis invoice $ll43180j Job No. 27514.000 (1143924) Please remit payment to: Wasbington Group Group International Corporate Lockbox 1635 1635 Paysphere Circle Chicago, lL 60674
Your assistance in this matter will be greatly appreciated. \..-otVery truly yours, \'2..Washington Group International, Inc. 
􀁇􀀽􀁾􀁾􀀡􀀽􀁾􀁡􀁾􀁾􀁾􀁾􀀽􀀽􀀡􀀠 July 26, 2004 Invoice No. 1132344 ADS 2396-03 27514.000 Mr. Jim Pierce Assistant Director ofPublic Works Town ofAddison 16801 Westgrove Drive Addison,
TX 75001-9010 Dear Mr. Pierce: In accordance with Technical Services Contract Agreement dated January, 2004 for us to provide engineering services for Bulk Fuel Storage and Dispensing
System at Addison Airport, Addison, Texas submitted herewith is our request for payment for services rendered through July 16, 2004. The amount due is as follows: To insure proper credit,
please inclnde the following job numbers on your cheek. Contract Maximum Percent Complete Amount to Date Previous Amount Current Invoice Planning & Studies Engineering & Design Construction
Management Totsl $33,947.50 81,219.50 14.434.00 129,601.00 100% $33,947.50 􀀱􀀯􀁩􀀾􀀧􀁚􀁾􀁾􀀠0",1, 0.00 $26,139.58 0.00 0.00 TOTAL AMOUNT DUE -this invoice Job No.17S14.000 (1132344)
Please remit paymellt to: Washingtoll GrollP International Corporate Lockbox 1635 1635 Paysphere Circle Chicago, IL 60674 Your assistance in this matter will be greatly appreciated.
Very truly yours, Washington Group International, Inc . ..-:;;::::.:..saidu en Project Manager SUcft 
"Wasblagton Group International Integrated EngIneering, Construction, and Manall)!ment Solutions June 17,2004 Invoice No. 1128955 ADS 2396-02 27514.000 Mr. Jim Pierce Assistant Director
ofPublic Works Town of Addison 16801 Westgrove Drive Addison, TX 75001-9010 In accordance with Technical Services Contract Agreement dated January, 2004 for us to provide engineering
services for BIlIk Fuel Storage and Dispensing System at Addison Airport, Addison, Texas submitted herewith is our request for payment for services rendered through June 11. 2004. The
amount due is as follows: To insure proper credit, please Include the (ollowiDg job numbers on your cheek. Contract Percent Amount Previous Current Maximum Complete to Date Amount Invoice
Planning & Studies 533,947.50 77"/0 $26,139.58 $8,486.88 $17,652.70 Engineering & Design 81,219.50 0% 0.00 0.00 0.00 Construction Management 14.434.00 0% 0.00 0.00 0.00 Total 129,601.00
77"/0 TOTAL AMOUNT DUE -tbls invoice 517,652.70 Job No. 27514.000 (1128955) Please remit payment to: Washington Group International Corporate Loekbox 1635 1635 Payspbere Cirele Chicago,
IL 60674 Your assistance in this matter will be greatly appreciated. Very truly yours, Washington Group Inremational, Inc. Project Manager SUcft 
" Washington March 11,2004 Invoice No. 1120249 27514.000 Mr. Jim Pierce Assistant Director ofPublic Works Town ofAddison 16801 Westgrove Drive Addison, TX 75001-9010 Dear Mr. Pierce:
In accordance with Technical Services Contract Agreement dated January, 2004 for us to provide engineering services for Bulk Fuel Storage and Dispensing System at Addison Airport, Addison,
Texas submitted herewith is our request for payment for services rendered through February 27, 2004. The amount due is as follows: To insure proper credit, please include the following
job numbers on your check. Contract Maximum Percent Complete Amount to Date Previous Amount Current Invoice Plaruilng & Studies Engineering & Design Construction Management Total $33,947.50
81,219.50 14.434.00 129,601.00 25% 0"10 0% 25% $0.00 0.00 0.00 $0.00 0.00 0.00 $8,486.88 0.00 0.00 TOTAL AMOUNT DUE -this invoice Job No. 27514.000 (1120249) $8,486.88 Please remit payment
to: Washington Gronp International Corporate Lockbox 1635 1635 Paysphere Circle Chicago. IL 60674 Your assistance in this matter will be greatly appreciated. Very truly yours, Washington
Group International, Inc. ----------_...__.._----------7800 East Union Ave., Suite 100. Denver. COlorado USA 80237 .. P.O. Box 588B. Denver, Colorado USA80217 Phone: (3(3) 􀀸􀀴􀀳􀁾􀀲􀀰􀀰􀀰􀀮􀀠Fax:
(303} 843·2208 • WNW.wginLoom