EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: February 18, 2026

To: CoorsTek Occupants
From: Ken Murphy
Emergency Contact Info: 303-384-2078 k.murphy@mines.edu

Outage Date: February 18, 2026 - until repaired
Outage Time: All day
Purpose: Elevator out of service.

Effect(s) on Occupants: The elevator is currently out of service pending repairs. We will provide an update as soon as more information becomes available.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Ken Murphy at 720-394-3922.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 15, 2026

To: Elm Hall Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: February 23 - 25, 2026
Outage Time: 5:30am - 3:00pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, cabinet unit heaters and Exhaust fans NO DORM ROOMS WILL BE AFFECTED

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 15, 2026

To: Elm Hall Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: February 23 - 25, 2026
Outage Time: 5:30am - 3:00pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, cabinet unit heaters and Exhaust fans NO DORM ROOMS WILL BE AFFECTED

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 15, 2026

To: Survey Field Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: February 25, 2026
Outage Time: 5:30am - 3:00pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, cabinet unit heaters and Exhaust fans

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 15, 2026

To: Elm Hall Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: February 23 - 25, 2026
Outage Time: 5:30am - 3:00pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, cabinet unit heaters and Exhaust fans NO DORM ROOMS WILL BE AFFECTED

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 15, 2026

To: Central Storage Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: February 26, 2026
Outage Time: 5:30am - 3:00pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, cabinet unit heaters and Exhaust fans.

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: January 30, 2026

To: Coolbaugh Hall
From: David Feron
Emergency Contact Info: 301-461-5354

Outage Date: February 27, 2026
Outage Time: 7:00am – 4:00pm
Purpose: Functional Testing for EF-1 and EF-2
System(s) Involved: Lab and Fume Hood Exhaust

Effect(s) on Occupants:

 During this day of functional testing for EF-1 and EF-2, a shutdown of lab exhaust ventilation should be expected. The extent of this shutdown could be a partial reduction in exhaust ventilation, a periodic loss of exhaust ventilation, or complete loss of exhaust ventilation.
 Testing will be conducted on lab fume hoods and general lab exhaust:
o Lab fume hoods will be short on exhaust airflow for brief periods while the system stabilizes. Lab fume hoods will alarm due to low hood velocities during this period.
o General lab exhaust will be shut off to simulate a failure condition. Fume hood exhaust flow will maintain proper airflow, but lab pressure be compromised. Occupants should be prepared for different pressurization cascades between spaces, and the building pressure may become more positive than normal.
o At the completion of these tests, all exhaust fans will be re-energized, and exhaust airflow will return to normal.
o Duration of testing and shutdown: Occupants should plan that exhaust ventilation will be compromised the entire day. Effects will be seen early in the day as intermittent shutdowns and temporary fume hood alarms. Airflow may be reestablished temporarily in preparation for the next test, so occupants should wait until they are notified that all testing is completed.
o Follow EHS guidelines for securing experiments in fume hoods during a loss of exhaust ventilation.
o Testing personnel will be visiting each lab to make adjustments above ceilings and at fume hood sashes.
o Affected Lab Suites: 027, 028, 029, 030, 142, 148, 149, 151, 166, 168, 235, 236, 237, 239, 241, 242, and 260.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call David Feron at 301-461-5354.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: February 9, 2026

To: Green Center Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: March 2 - 5, 2026
Outage Time: 5:30 am - 3:30 pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, exhaust fans, and air compressors

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Intermittent Lab fume hood flow, personnel in and out of building spaces and corridors. Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

This information is available online here: Campus Outages

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: February 9, 2026

To: GRL Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: March 9 - 11, 2026
Outage Time: 5:30 am - 3:30 pm
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, exhaust fans, and air compressors

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Intermittent Lab fume hood flow, personnel in and out of building spaces and corridors. Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

PLEASE SEE ATTACHED SCHEDULE AND SAFETY ADVISORY FOR LAB SPACES

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: February 9, 2026

To: Berthoud Hall Occupants
From: Roberto Velazquez
Emergency Contact Info: 303-273-3238

Outage Date: March 16 – 19, 2026
Outage Time: 5:30 am - 3:30 pm daily
Purpose: HVAC Preventive Maintenance
System(s) Involved: Air handling units, exhaust fans, and air compressors

Effect(s) on Occupants: The air handlers provide ventilation air, make-up air and primary heating and cooling for the building. During the shutdown period, there will be no air circulation, the cooling set point would not be satisfied, and the space within the area would not reach the required static pressure (space would be much more negative). The heating and cooling set points within these areas would not be satisfied. Building spaces temperatures will fluctuate and exhaust fans will be off intermittently. Personnel will be in and out of spaces as the maintenance is being completed.

Comments: Intermittent Lab fume hood flow, personnel in and out of building spaces and corridors. Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call me at 303-273-3238.

PLEASE SEE ATTACHED SCHEDULE

Thank you for your cooperation.