SCHEDULE O (Form 990) (Rev. January 2025) Department of the Treasury Internal Revenue Service
Supplemental Information to Form 990 or 990-EZ
Complete to provide information for responses to specific questions on
Form 990 or 990-EZ or to provide any additional information.
Attach to Form 990 or 990-EZ.
Go to www.irs.gov/Form990 for instructions and the latest information.
OMB No. 1545-0047
Open to Public Inspection
Name of the organization
California Industrial Hygiene Council
Employer identification number
33-0780494
Return Reference
Explanation
Form 990-EZ, Part I, Line 16
From 990-EZ, Part I, Line 16 - Expenses include professional development seminar, meetings, telecommunications, bill tracking services, etc.
For Paperwork Reduction Act Notice, see the Instructions for Form 990 or 990-EZ.