Attachment 4: GRTE - Combined Histoplasma Report 999-5237

201 South 30th Street
Billings, Montana 59101
Phone: 406/245-7766
FAX: 406/254-1428
July 8, 2025
Ms. Laura Landon
Hennebery Eddy Architects, Inc.
921 SW Washington Street STE 250
Portland, OR 97205
RE:

Letter Report
Indoor Air Sampling for Histoplasma capulatum
Main Lodge Building

4 Lazy F Ranch

Moose, Wyoming
Northern Industrial Hygiene Project No. 999-5237

Dear Ms. Landon:
At your request, Northern Industrial Hygiene (Northern) visited the above described project site on May 21, 2025. The purpose of our visit was to visually document the presence/absence of bat guano or other vector feces and conduct air sampling for the presence/absence of Histoplasma capsulatum. The inspection focused on the Main Lodge Building.
Overview
It was reported to Northern that bat guano (feces) was accumulated on the floor throughout the Main Lodge Building. Northern was contacted to conduct to visually confirm this condition and to conduct environmental air sampling for the presence or absence of Histoplasma capsulatum.
Observations
Large amounts of bat guano was observed on the floors and walls in all of the rooms in the main lodge.

AIR SAMPLING FOR HISTOPLASMA CAPSULATUM

Four Polymerase Chain Reaction (PCR) air samples (A-1 through A-4) were collected in representative areas of the Main Lodge Building. Laboratory results are present in the following table:

Asbestos ♦ Lead-based Paint ♦ Industrial Hygiene ♦ Indoor Air Quality ♦ Laboratory

Indoor Air Sampling for
Histoplasma capsulatum
Main Lodge Building

4 Lazy F Ranch

Moose, Wyoming
July 8, 2025

HISTOPLASMA CAPSULATUM

AIR SAMPLE RESULTS

May 21, 2025
Sample
No.

Sample Location

Sample Type

Present/Absent

Acceptable
(Yes/No)

PCR-1

Kitchen

Air

Absent

Yes

PCR-2

Dining/Living Room

Air

Absent

Yes

PCR-3

Great Room

Air

Absent

Yes

PCR-4

Bedroom/Bedroom 2

Air

Absent

Yes

For further details reference the attached laboratory analysis report.

CONCLUSIONS

Laboratory analysis revealed that airborne Histoplasma capsulatum was not present in the tested locations at the time of Northern’s investigation.

RECOMMENDATIONS

Northern recommends a remediation company be retained to remove, bag and dispose of all feces that has accumulated on horizontal surfaces. Any porous materials that came into contact with the feces that therefore cannot be adequately cleaned should also be removed, bagged and disposed. All remaining surfaces should then be thoroughly cleaned with an appropriate disinfectant. The remediation company should also identify and seal all openings