Skip To Main Content

Maintenance & Operations Department

The Maintenance & Operations Department plays a crucial role in supporting the educational mission of the Colton Joint Unified School District. Our work directly impacts student success by providing a clean, safe, and well-maintained learning environment. We are committed to creating a positive and productive atmosphere for all members of our school community.

 

Staff_M & O

Maintenance & Operations Staff Directory | maintenance@cjusd.net 

1313 Valley Blvd., Colton, CA 92324  (909) 580-5008

Patrick Yamakawa

Manager of Maintenance & Operations

(909) 580-5008 ext. 5355

Ralph Duran

Maintenance & Operations Supervisor II

(909) 580-5008 ext. 5342

Philip May

Maintenance & Operations Supervisor II

(909) 580-5008 ext. 5363

Harry Arensberg

Maintenance Supervisor

(909) 580-5008 ext. 5347

Bruno Granillo

Maintenance & Operations Supervisor I

(909) 580-5008 ext. 5351

Ernesto Arriola

Maintenance & Operations Supervisor I

(909) 580-5008 ext. 5348

Moises Rodriguez

Grounds Supervisor

(909) 580-5008 ext. 5349

Santos Menendez

Accountant Technician

(909) 580-5008 ext. 5343

Ariana Payan

Office Assistant

(909) 580-5008 ext. 5344

M & O In Action!

David Bell

Director, Maintenance & Operations

Sonia Diaz

Administrative Assistant, Maintenance & Operations

Resources