Geotechnical Engineering &
Construction Materials Testing
Storm Lake
Storm Lake Location
Certified Testing Services, Inc.
Send Us a Message
Contact Form
PO Box 740
1330 Michigan St
Storm Lake, IA 50588
- Mon - Fri
- -
- Sat - Sun
- Closed
Saturday and Sunday Hours By Appointment Only
Holiday Hours
- Thursday, November 28, 2024 : Closed
- Wednesday, December 25, 2024 : Closed
- Wednesday, January 1, 2025 : Closed
- Monday, January 20, 2025 : Closed
- Monday, February 17, 2025 : Closed
- Monday, May 26, 2025 : Closed
- Thursday, June 19, 2025 : Closed
- Friday, July 4, 2025 : Closed
- Monday, September 1, 2025 : Closed
- Monday, October 13, 2025 : Closed
- Tuesday, November 11, 2025 : Closed
- Thursday, November 27, 2025 : Closed
- Thursday, December 25, 2025 : Closed
Main Phone: (712) 213-8378
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