
Ron Rinell, Owner
Bunyon Bros. Tree Service is owned and operated by Ron Rinell. With over 30 years of experience and as one of the few Certified Arborists on the Central Coast, Ron has turned Bunyon Bros. into the largest tree service company in San Luis Obispo County. He holds a Class A driver’s license and graduated Cal Poly San Luis Obispo in International Business.
Arborist Number: WE-9252A
Qualified Applicator (QAC) Number: 123770
Bunyon Bros. Tree Service hires and trains only the best tree professionals. Your complete tree pruning specialists. To find out more, scroll down to the employee you wish to know more about.

Shaun Callarman
ISA Certified Arborist, WE-3256A
Supervisor & Estimator
19 years of experience
Resides in San Luis Obispo

William Van Horbek
ISA Board Certified Master Arborist #WE-6407B
Qualified Applicators License QAL 97532
Certified Tree Care Safety Professional CTSP #783
Supervisor & Estimator
Cal Poly Alumni
15 years of experience
Resides in Paso Robles

Bob Griswold
Supervisor & Foreman
35 years of experience
Certified Crane Operator, backhoe operator, welder, fabricator, tree feller, sawyer
Class A driver’s license
Resides in San Luis Obispo

Conrado Morales
Foreman
7 years of experience
Climber, boom operator
Resides in Nipomo

Mark Hitchcock
15 years experience
Purchaser, stump grinder operator
Resides in San Luis Obispo

Manuel Rojas
Groundsperson
5 years experience
Firewood delivery
Resides in San Luis Obispo

Arturo Ramos
Groundsperson
2 years experience
Resides in Santa Maria

Jess Spencer
ISA Certified Arborist, WE-10345A
Foreman
22 years of experience
Climber, aesthetic pruning according to ISA standards, hazardous tree removal specialist, tree feller, sawyer
Resides in Grover Beach

Doug Rhodes
ISA Certified Arborist, WE-10340A
General Foreman
25 years of experience
Expert climber, tree feller, certified line clearance tree trimmer, expert rigging and custom pulley applications, instructor for all climbing techniques
Resides in Arroyo Grande

Gonzalo Cardenas
Groundsperson
3 years experience
Firewood supervisor
Resides in Santa Maria

James Haas
Climber & Bucket Operator
15 years experience
Trimming, Removals, Safety
Resides in Arroyo Grande
Elmer Aquino
Groundsperson
Resides in Atascadero
Raul Andrade Arevalo
Groundsperson
Resides in Paso Robles
Kevin Camacho
Groundsperson
Resides in Cayucos
Felix Zumbado
Groundsperson
Resides in San Luis Obispo
Isiat Cabrera-Molano
Groundsperson
Resides in Cambria
Jackson Ayres
Groundsperson
Resides in Avila Beach
Jeffery Evans
Groundsperson
Resides in Creston
Daniel Gerbasi
Groundsperson
Resides in Grover Beach
John Gutierrez
Groundsperson
Resides in Lake Nacimiento
Enrique Gutierrez Cruz
Groundsperson
Resides in Lompoc
Bartolo Hernandez
Tree Climber
Resides in Los Osos
Mark Howell
Groundsperson
Resides in Morro Bay
Gustavo Licea
Groundsperson
Resides in San Luis Obispo
Brian Lindemuth
Groundsperson
Resides in Oceano
Damion Llamas
Groundsperson
Resides in San Luis Obispo
Gerardo Martinez
Groundsperson
Resides in Pismo Beach
David Martinez-Sandoval
Groundsperson
Resides in Shell Beach
Rob McCord
Heavy Equipment Operator
Resides in Nipomo
Sammuel Navarro
Groundsperson
Resides in San Miguel
Jaime Nunez
Groundsperson
Resides in Santa Margarita
Ismael Reyes
Groundsperson
Resides in Shandon
Sean Vasquez
Mechanic
Resides in San Luis Obispo
Michael Baker
Mechanic
Resides in Bradley