Events

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: July 2, 2026

To: USGS Hazards Building, Alderson Hall , Chiller Plant 6
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: Monday July 6 through October 2026
Outage Time: All day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Access to the south courtyard at Alderson and Chiller Plant 6 will be restricted, starting July 6th. The temp parking lot north of the USGS Hazards building will be closed permanently starting July 13th.

Effect(s) on Occupants: Access to the south courtyard at Alderson and Chiller Plant 6 will be limited to authorized vehicles only; please contact Summer Schaller to coordinate access in advance @Summer Schaller. Limitations are expected to continue through August. Additional information will be made available regarding access limitations from August through October.

The temporary lot north of the USGS Hazards building will close permanently. New Accessible parking and a loading zone is now available on Illinois Street in front of the main entrance, and alternative Accessible parking is available at the Welcome Center or on Illinois Street in front of Brown Hall. Please see attached map for Accessible Parking options.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: August 24, 2026

To: Alderson Hall , Chiller Plant 5
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: August 26 - November 9, 2026
Outage Time: All Day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable starting Wednesday August 26th.

Effect(s) on Occupants: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable due to sitework activities for the EMRF building. Access will only be available through the building from the north. Between August 24th and August 26th, limited access is available if coordinated in advance. Please contact Summer Schaller for all access questions & concerns @Summer Schaller.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: October 6, 2026

To: Engineering Hall and Engineering Annex Occupants
From: Craig W Crow
Emergency Contact Info: 720-496-1617

Outage Date: October 10 – 13, 2026
Outage Time: From 7am on Sat., Oct. 10 to 5pm on Tues., Oct. 13, 2026
Purpose: To replace failing rooftop air handling unit at Engineering Hall
System(s) Involved: Heating, Cooling, and Ventilation systems for the building will be down. 15th Street will also be closed for a crane to perform the work.

Effect(s) on Occupants: Engineering Hall and Engineering Annex will both be required to be unoccupied for the duration of the work to avoid having occupants under the swing of the crane. 15th Street will also be closed between Arapahoe and the alley behind Engineering Annex for portions of this work when the crane is required, per the attached. The roundabout on 15th will still be accessible from Arapahoe, and the alley behind Engineering Annex will also be accessible.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Craig W Crow at 720-495-1617.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: July 2, 2026

To: USGS Hazards Building, Alderson Hall , Chiller Plant 6
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: Monday July 6 through October 2026
Outage Time: All day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Access to the south courtyard at Alderson and Chiller Plant 6 will be restricted, starting July 6th. The temp parking lot north of the USGS Hazards building will be closed permanently starting July 13th.

Effect(s) on Occupants: Access to the south courtyard at Alderson and Chiller Plant 6 will be limited to authorized vehicles only; please contact Summer Schaller to coordinate access in advance @Summer Schaller. Limitations are expected to continue through August. Additional information will be made available regarding access limitations from August through October.

The temporary lot north of the USGS Hazards building will close permanently. New Accessible parking and a loading zone is now available on Illinois Street in front of the main entrance, and alternative Accessible parking is available at the Welcome Center or on Illinois Street in front of Brown Hall. Please see attached map for Accessible Parking options.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: August 24, 2026

To: Alderson Hall , Chiller Plant 5
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: August 26 - November 9, 2026
Outage Time: All Day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable starting Wednesday August 26th.

Effect(s) on Occupants: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable due to sitework activities for the EMRF building. Access will only be available through the building from the north. Between August 24th and August 26th, limited access is available if coordinated in advance. Please contact Summer Schaller for all access questions & concerns @Summer Schaller.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: September 11, 2026

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

Outage Date: October 14 - 15, 2026
Outage Time: 5:30am - 3:30pm daily, (Critical Equipment, Air Handling units (AHUs), Roof Top Units (RTUs), and Exhaust Systems, will be serviced from 5:30am to 10:00am or sooner if possible.)
Purpose: HVAC Preventive Maintenance

System(s) Involved: Air handling units, Roof Top Units, FCU’s, Exhaust Fans, and air compressors

Effects on Occupants: Personnel may remain in the building during HVAC preventive maintenance. You may experience a slight change in temperature throughout the building. 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, heating and cooling setpoints will not be maintained, and affected spaces will not achieve the required static pressure (spaces may become more negative). Intermittent lab fume hood airflow may also occur during this period.

Scope of Work: Maintenance activities will include replacing belts and filters, cleaning coils and outside air intakes, greasing fan, and motor bearings, and inspecting all major components of the HVAC equipment. To minimize operational disruption, all equipment will be serviced early in the morning, and units will be taken offline and serviced one at a time, ensuring that only a single system is out of service at any given time.

Comments: Please notify all personnel affected by this outage. If this interruption creates an unmanageable issue or if additional information is needed, please contact me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: July 2, 2026

To: USGS Hazards Building, Alderson Hall , Chiller Plant 6
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: Monday July 6 through October 2026
Outage Time: All day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Access to the south courtyard at Alderson and Chiller Plant 6 will be restricted, starting July 6th. The temp parking lot north of the USGS Hazards building will be closed permanently starting July 13th.

Effect(s) on Occupants: Access to the south courtyard at Alderson and Chiller Plant 6 will be limited to authorized vehicles only; please contact Summer Schaller to coordinate access in advance @Summer Schaller. Limitations are expected to continue through August. Additional information will be made available regarding access limitations from August through October.

The temporary lot north of the USGS Hazards building will close permanently. New Accessible parking and a loading zone is now available on Illinois Street in front of the main entrance, and alternative Accessible parking is available at the Welcome Center or on Illinois Street in front of Brown Hall. Please see attached map for Accessible Parking options.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: August 24, 2026

To: Alderson Hall , Chiller Plant 5
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: August 26 - November 9, 2026
Outage Time: All Day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable starting Wednesday August 26th.

Effect(s) on Occupants: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable due to sitework activities for the EMRF building. Access will only be available through the building from the north. Between August 24th and August 26th, limited access is available if coordinated in advance. Please contact Summer Schaller for all access questions & concerns @Summer Schaller.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: September 11, 2026

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

Outage Date: October 14 - 15, 2026
Outage Time: 5:30am - 3:30pm daily, (Critical Equipment, Air Handling units (AHUs), Roof Top Units (RTUs), and Exhaust Systems, will be serviced from 5:30am to 10:00am or sooner if possible.)
Purpose: HVAC Preventive Maintenance

System(s) Involved: Air handling units, Roof Top Units, FCU’s, Exhaust Fans, and air compressors

Effects on Occupants: Personnel may remain in the building during HVAC preventive maintenance. You may experience a slight change in temperature throughout the building. 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, heating and cooling setpoints will not be maintained, and affected spaces will not achieve the required static pressure (spaces may become more negative). Intermittent lab fume hood airflow may also occur during this period.

Scope of Work: Maintenance activities will include replacing belts and filters, cleaning coils and outside air intakes, greasing fan, and motor bearings, and inspecting all major components of the HVAC equipment. To minimize operational disruption, all equipment will be serviced early in the morning, and units will be taken offline and serviced one at a time, ensuring that only a single system is out of service at any given time.

Comments: Please notify all personnel affected by this outage. If this interruption creates an unmanageable issue or if additional information is needed, please contact me at 303-273-3238.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: July 2, 2026

To: USGS Hazards Building, Alderson Hall , Chiller Plant 6
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: Monday July 6 through October 2026
Outage Time: All day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Access to the south courtyard at Alderson and Chiller Plant 6 will be restricted, starting July 6th. The temp parking lot north of the USGS Hazards building will be closed permanently starting July 13th.

Effect(s) on Occupants: Access to the south courtyard at Alderson and Chiller Plant 6 will be limited to authorized vehicles only; please contact Summer Schaller to coordinate access in advance @Summer Schaller. Limitations are expected to continue through August. Additional information will be made available regarding access limitations from August through October.

The temporary lot north of the USGS Hazards building will close permanently. New Accessible parking and a loading zone is now available on Illinois Street in front of the main entrance, and alternative Accessible parking is available at the Welcome Center or on Illinois Street in front of Brown Hall. Please see attached map for Accessible Parking options.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: August 24, 2026

To: Alderson Hall , Chiller Plant 5
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: August 26 - November 9, 2026
Outage Time: All Day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable starting Wednesday August 26th.

Effect(s) on Occupants: Vehicular access to the south courtyard at Alderson and Chiller Plant 5 will be unavailable due to sitework activities for the EMRF building. Access will only be available through the building from the north. Between August 24th and August 26th, limited access is available if coordinated in advance. Please contact Summer Schaller for all access questions & concerns @Summer Schaller.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.

EMERGENCY / SERVICE OUTAGE MEMORANDUM
Notification Date: July 2, 2026

To: USGS Hazards Building, Alderson Hall , Chiller Plant 6
From: Summer Schaller
Emergency Contact Info: 720-209-7032

Outage Date: Monday July 6 through October 2026
Outage Time: All day
Purpose: Completion of landscaping & paving scope for the EMRF construction

System(s) Involved: Access to the south courtyard at Alderson and Chiller Plant 6 will be restricted, starting July 6th. The temp parking lot north of the USGS Hazards building will be closed permanently starting July 13th.

Effect(s) on Occupants: Access to the south courtyard at Alderson and Chiller Plant 6 will be limited to authorized vehicles only; please contact Summer Schaller to coordinate access in advance @Summer Schaller. Limitations are expected to continue through August. Additional information will be made available regarding access limitations from August through October.

The temporary lot north of the USGS Hazards building will close permanently. New Accessible parking and a loading zone is now available on Illinois Street in front of the main entrance, and alternative Accessible parking is available at the Welcome Center or on Illinois Street in front of Brown Hall. Please see attached map for Accessible Parking options.

Please notify all personnel affected by this outage. If this interruption of service creates an unmanageable problem, or you desire additional information, please call Summer Schaller at 720-209-7032.

Thank you for your cooperation.