MARICOPA COUNTY -TAX CONCURRENCE LETTER AMKOR II 01-28-2026FINAL.DOCX

January 28, 2026
Ms. Elizabeth Whiteman
Executive - Secretary
Foreign-Trade Zones Board
U.S. Department of Commerce
1401 Constitution Avenue, NW, Room 21013
Washington, DC 20230
Re: Amkor Technology Arizona, Inc. Request for FTZ Property Tax Concurrence “No Objection”
Dear Ms. Whiteman:
The undersigned being a duly authorized representative of Maricopa County does hereby 
acknowledge that Maricopa County has no-objection to the proposed Foreign Trade Zone (FTZ) 
and property tax reclassification of all future real and personal property for Amkor Technology of 
Arizona, Inc. to be located at 9303 W Amkor Way, Peoria, AZ 85383, parcel # 201-02-019, within 
Foreign Trade Zone 75. 
In particular, we understand the Foreign Trade Zone designation and resulting tax implications in 
reclassifying for property tax purposes.  Amkor Technology Arizona, Inc. real and personal 
property located at the site referenced above is requesting to be eligible to receive the Class 6 
assessment ratio of 5% in correspondence with the creation of their Foreign Trade Zone.  
Maricopa County expresses “no-objection” to the FTZ designation and proposed property tax 
reclassification contemplated herein.
Sincerely,
Chair, Kate Brophy McGee
Board of Supervisors
Maricopa County