It appears Jaylin subsequently shared the report with Mark Holand, who then sent the
message below along with the attachments, also copied to:

e Jaylin Cassady, WorkSafeBC

e Ariane Janson, WorkSafeBC

e Terence Tang, Arcose

e William Wu, Arcose

Actions taken so far:
e | spoke with Ron, Matt, and Kevin to brief them on the situation
e | emailed Arcose to thank them for passing along the message and to confirm /
assure them that the area was not staged prior to sound sampling
e Left a voicemail for Jaylin Cassady noting that | received the communication
through a secondary source and reassuring her that the sampling conditions
were not staged in any way

I'll continue to share updates as | receive further communication.

Thank you,

Jason Mayo

Manager, Safety and Environmental Compliance
Railway Safety and Security

C: 672 208 4270

BC Rapid Transit Company (BCRTC)

6800 14th Ave, Burnaby, BC V3N 487, Canada

T Together all the way

From: Terence Tang <ttang@arcose.com>
Sent: Wednesday, March 18, 2026 9:54 AM

To: MAYO JASON <JASON MAYO@BCRTC.BC.CA>; MINSTER DAN <DAN_MINSTER@BCRTC.BC.CA>
Subject: FW: [External]Subject: FORMAL NOTICE: Staged Test Environment & Active Suppression of
Evidence — Claim #42647461

RNAL WARNING: This email came from an external source. Please use caution when
opening attachments or clicking on links, and only do so when you are expecting them from a
known sender or can confirm they are legitimate and safe.

Good morning Jason/Dan,

FYI, We received this email today.

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