From: Occupational Health BCRTC Inquiry Line

Sent: Tue, 3 Feb 2026 17:59:31 +0000

To: WAINWRIGHT RON; Occupational Health BCRTC Inquiry Line
Subject: RE: Holand, Mark - WSBC

Hi Ron,

Thank you so much for this detailed information.
Would be okay with me submitting this to WSBC?
Thanks,

CONNIE PRIER

Occupational Health Coordinator
Occupational Health & Wellness

Tel.: 604-653-8439 | Fax: 604-520-5552

BC Rapid Transit Company (BCRTC)
6800 14th Ave, Burnaby, BC V3N 4S7, Canada

7] Together all the way

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From: WAINWRIGHT RON <RON_WAINWRIGHT @bcrtc.bc.ca>

Sent: Tuesday, February 3, 2026 9:56 AM

To: Occupational Health BCRTC Inquiry Line <Occupationalhealth@bcrtc.bc.ca>
Subject: Re: Holand, Mark - WSBC

Hi Connie,

In the training room, behind where Mark was sitting, there is a server rack. Mark put in his
Safety Concern and the next day | had the sound levels tested by Kelvin Lo from Safety. The dB
levels were at 63 if you put the sensor right up against the server and 56 at the desk where
Mark was sitting.

Similar test were done in the Control room and they showed the following results:

1. Workstations: average around 56-58 dBA
2. Ambient Working Environment: average around 50-70dBA

e 50 dBA when the room was silent (no communication happening)

e Peak at 70dBA when there are communication happening through the speakers
3. Server rack behind workstation: average around 62-65 dBA

000240