Crown Castle 1220 Augusta Drive, Suite 500 Houston, TX 77057 Tel 713 570.3000 Fax 713570.3100 www.crowncastle.com August 16,2012 Dear Landlord: Thank you for choosing to transform your relationship with Crown Castle. Enclosed is a COPY of the Executed Amendment for your records. Should you have any questions, please feel free to contact your Transaction Specialist or Landlords Helpdesk at 866-482-8890. Sincerely, ~A~ Project Coordinator Crown Castle International Ph: (713) 570-3000 Fax: (724) 416-6923

FIRST AMENDMENT TO STANDARD LAND LEASE AGREEMENT THIS FIRST AMENDMENT TO STANDARD LAND LEASE AGREEMENT (the "First Amendment") is made effective this ~ day of Jt.&/ J,2012, by and between PIMA COUNTY COMMUNITY COLLEGE DISTRICT (herein fter referred to as "Landlord") and CROWN ATLANTIC COMPANY LLC, a Delaware limited liability company (hereinafter referred to as "Tenant"). RECITALS WHEREAS, State Board of Directors for Community Colleges ("Original Landlord") and Southwestco Wireless, L.P. ("Original Tenant") entered into a Standard Land Lease Agreement dated April 4, 1997, a memorandum of which was recorded on July 11, 1997 at Sequence No. 97109086 in Docket 10585 at Page 1025, in the Office of the Pima County Recorder, Arizona (the "Lease") whereby Original Tenant leased certain real property, together with access and utility easements, located in Pima County, Arizona from Original Landlord (the "Premises"), all located within certain real property owned by Original Landlord ("Landlord's Property"); and WHEREAS, Pima County Community College District is the Landlord under the Lease as the current owner of Landlord's Property, as more fully set forth in the Quit Claim Deed recorded on October 3, 2002 at Sequence No. 20021920129 in Docket 11898 at Page 405, in the Office of the Pima County Recorder, Arizona; and WHEREAS, Crown Atlantic Company LLC is currently the Tenant under the Lease as successor in interest to the Original Tenant, as more fully set forth in the Memorandum of Assignment recorded on August 5, 1999 at Sequence No. 19991500225 in Docket 11104 at Page 570, in the Office of the Pima County Recorder, Arizona; and WHEREAS, the Premises may be used for the purpose of constructing, maintaining and operating a communications facility, including tower structures, equipment shelters, cabinets, meter boards, utilities, antennas, equipment, any related improvements and structures and uses incidental thereto; and Site Name: Palo Verde & Los Rea A03ll2044 Business Unit #: 807387 1

WHEREAS, the Lease had an initial tenn that commenced on July 1, 1997 and expired on June 30, 2002. The Lease provides for three extensions of five years each, the first and second of which were exercised by Tenant. According to the Lease, the final extension expires on June 30, 2017; and WHEREAS, Landlord and Tenant desire to amend the Lease on the tenns and conditions contained herein. NOW THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are acknowledged, Landlord and Tenant agree as follows: 1. Recitals; Defined Tenns. The parties acknowledge the accuracy of the foregoing recitals. Any capitalized tenns not defined herein shall have the meanings ascribed to them in the Lease. 2. Tenn. Section 2 ofthe Lease is being amended by deleting the following: Renewal Tenns: Three (3) additional renewal tenns of five (5) years each, pursuant to paragraph 4 herein. and adding the following: Renewal Tenns: Seven (7) additional renewal tenns of five (5) years each, pursuant to paragraph 4 herein. Landlord and Tenant hereby acknowledge that Tenant has exercised the first and second Renewal Tenns, leaving a balance of five Renewal Tenns. If all renewals are exercised, the final Renewal Tenn will expire on June 30, 2037. Landlord and Tenant further agree that the tenn of all access and utility easements granted with the Lease, including that certain Access Easement recorded July 11, 1997 at Sequence No. 97109087 in Docket 10585 at Page 1030, shall run concurrent with the lease tenn, as extended by this First Amendment. 3. Rent Adjustment. Commencing on July 1, 2015 and on the anniversary of that date each year thereafter (the "Adjustment Date"), the Annual Rent shall increase based on the Consumer Price Index published by the Bureau of Labor and Statistics of the United States Department of Labor for all Urban Consumers, US City Average, All Items, Not Seasonally Adjusted, Base Period 1982-84=100 ("CPI-U") indicator and shall be detennined by dividing the Site Name: Palo Verde & Los Rea A03112044 Business Unit #: 807387 2

CPI-U indicator, published three (3) months pnor to the Adjustment Date, by the CPI-U indicator published one (1) year and three (3) months prior to the Adjustment Date, and multiplying the resultant number by the amount of the most recent Annual Rent. In no event shall the increase in Annual Rent calculated for anyone (1) year period be less than 3% of the most recent Annual Rent, or greater than 5% of the most recent Annual Rent. In the event of a decrease in the CPI-U indicator, the Annual Rent will not decrease but will remain the same as in the previous year. The foregoing rent escalation shall amend and replace any rent escalations currently in the Lease. 4. Consideration. Tenant will pay to Landlord a one-time amount of Seven Thousand and 001100 Dollars ($7,000.00) for the full execution of this First Amendment, which shall be paid within sixty (60) days of the full execution of this First Amendment ("Conditional Signing Bonus"). In the event that this First Amendment (and any applicable memorandum) is not fully executed by both Landlord and Tenant for any reason, Tenant shall have no obligation to pay the Conditional Signing Bonus to Landlord. 5. Governmental Approvals. If requested by Tenant, Landlord will execute, at Tenant's sole cost and expense, all documents required by any governmental authority in connection with any development of, or construction on, the Premises, including documents necessary to petition the appropriate public bodies for certificates, permits, licenses and other approvals deemed necessary by Tenant in Tenant's absolute discretion to utilize the Premises for the purpose of constructing, maintaining and operating communications facilities, including without limitation, tower structures, antenna support structures, cabinets, meter boards, buildings, antennas, cables, equipment and uses incidental thereto. Landlord agrees to be named applicant if requested by Tenant. Landlord shall cooperate in all ways, including but not limited to providing information, signing documents and seeking execution by third parties of documents that will remove, subordinate or satisfy any mortgages, deeds of trusts, liens or other encumbrances affecting the Premises. 6. Representations, Warranties and Covenants of Landlord. Landlord represents, warrants and covenants to Tenant as follows: a) The Premises is owned by Landlord free and clear of any mortgage, deed of trust, lien, or right of any individual, entity or governmental authority arising under any option, right of Site Name: Palo Verde & Los Rea A03l12044 Business Unit #: 807387 3

first refusal, lease, license, easement or other instrument, except for the rights of Tenant arising under the Lease as amended hereby and the rights of utility providers under recorded easements. b) Upon Tenant's request, Landlord agrees to cure any defect in Landlord's title to the Premises which in the reasonable opinion of Tenant has or may have an adverse effect on Tenant's use or possession ofthe Premises. c) Landlord agrees to execute such further documents and provide such further assurances as may be reasonably requested by Tenant to effect any release or cure referred to in this Section, to evidence the full intention of the parties, and to assure Tenant's use, possession and quiet enjoyment of the Premises under the Lease as amended hereby. 7. Notices. Tenant's notice address as stated in the Lease is amended as follows: TENANT'S PRIMARY CONTACT Crown Atlantic Company LLC c/o Crown Castle USA Inc. E. Blake Hawk, General Counsel Attn: Legal Department - Real Estate 2000 Corporate Drive Canonsburg, P A 15317 8. IRS Form W-9. Landlord agrees to provide Tenant with a completed IRS Form W-9, or its equivalent, upon execution of this First Amendment and at such other times as may be reasonably requested by Tenant. In the event the Landlord's Property is transferred, the succeeding Landlord shall have a duty at the time of such transfer to provide Tenant with a completed IRS Form W-9, or its equivalent, and other related paper work to effect a transfer in the rent to the new Landlord. Landlord's failure to provide the IRS Form W-9 within thirty (30) days after Tenant's request shall be considered a default and Tenant may take any reasonable action necessary to comply with IRS regulations including, but not limited to, withholding applicable taxes from rent payments. 9. Letter Agreement. This First Amendment supersedes that certain Letter Agreement by and between Landlord and Tenant dated April 26, 2012, and in case of any conflict or inconsistency between the terms and conditions contained in the Letter Agreement and the terms and conditions contained in this First Amendment, the terms and conditions in this First Amendment shall control. Site Name: Palo Verde & Los Rea A03l12044 Business Unit #: 807387 4

10. Remainder of Lease Unaffected. In all other respects, the remainder of the Lease shall remain in full force and effect. Any portion of the Lease that is inconsistent with this First Amendment is hereby amended to be consistent. [Signature pages follow] Site Name: Palo Verde & Los Rea A03112044 Business Unit #: 807387 5

Landlord and Tenant have caused this First Amendment to be duly executed on the day and year first written above. LANDLORD: PIMA COUNTY COMMUNITY COLLEGE DISTRICT [Tenant Execution Page Follows] Site Name: Palo Verde & Los Rea A03l12044 Business Unit #: 807387 6

This First Amendment is executed by Tenant as ofthe date first written above. TENANT: CROWN ATLANTIC COMPANY LLC, a Delaware limited liability company BY:~~~ Print Name: Title: Lisa A:SeWIC RET Manager 3--17~ c Py Site Name: Palo Verde & Los Rea A03112044 Business Unit #: 807387 7