3/22/26, 11:52 PM Gmail - Subject: Mark Holand — Claim 42647461 — Acoustic Data Set — PDF and Source Files Attached

Mm G ma il mark holand <marktholand@gmail.com>

Subject: Mark Holand — Claim 42647461 — Acoustic Data Set — PDF and Source Files Attached

1 message

mark holand <marktholand@gmail.com> Fri, Mar 6, 2026 at 11:22 AM
To: "Cassady, Jaylin" <Jaylin.Cassady@worksafebc.com>

Hi Jaylin,

Thank you for calling this morning. As | mentioned, due to my current medical state | find it easier to communicate by email, as it gives me time to think before
responding. | appreciate your understanding.

As discussed, | wanted to ensure your investigators have access to my complete acoustic data. | realized | may not have uploaded the original data sets —
the portal does not accept .txt files directly, which may have caused the gap.

| have attached two versions of the data to support your investigation:

APDF copy — for security and tamper-evident documentation. The original .txt files — which are easier to import directly into Excel for analysis.
Both contain the same data. | have included both formats to make the review process as straightforward as possible for your investigators.
Please let me know if there is anything else you need from me.

Sincerely,

Mark Holand

236-994-3376

Claim# 42647461

6 attachments

2 spectrum 440 hz.txt
13K

Q spectrum behind head.txt
13K

2 spectrum right ear.txt
13K

Q spectrum 1000 hz.txt
13K

Q spectrum left ear.txt
13K

gq Combined_Data_Set.pdf
417K

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