187 E. Warm Springs Road, Suite A, Las Vegas, Nevada 89119 Tel: (702) 315-4272, Fax: (702) 313-1144, Email: faridehs@sigmamec.com

Sigma Mechanical Engineering Consultants

UNLV Planning and Construction September 21, 2015 4505 S. Maryland Pkwy, Box 451027 Las Vegas, NV 89154-1027 Attn.: Mr. Todd Calvin, Senior Project Manager Re: DIN Commons HVAC Upgrade - Addendum #2 Dear Mr. Calvin, We would like to present the below changes as part of addendum #2 to our bid set documents of the above project, dated 06-23-2015: Mechanical:

1) Sheet M0.02 - Revised Sheet a. Rooftop Unit Schedule: Added requirements for programmable thermostat. b. Make up air Unit Schedule: Added requirements for unit temperature controller.

Electrical:

1) Sheets E0.02 & E2.01 - Revised Sheet a. Revised electrical connections to MAU-1, MAU-2 and EF-6

Please let us know in case of any questions. Sigma Mechanical Engineering Consultants

Farideh Shamash Farideh Shamash Director Attachments:

Sheet M0.02 – Revised Sheet E0.02 – Revised Sheet E2.01 – Revised