Adult Division


Fairfield Probation Office – Main          
 

475 Union Avenue 

Fairfield, CA 94533 

 

707-784-7600 – Office 

707-784-7605 – Fax 

 

Probation Services Manager 

 

Ruben Vang 

Phone:  707-784-7600 

[email protected] 

 

Supervising Deputy Probation Officers  

 

Earl Montilla – Pretrial Services 

Phone: 707-784-7586 

Fax: 707-784-7605 

[email protected] 

 

Agustina Simms – Adult Court Investigations 

Phone: 707-784-3210

Fax: 707-784-7605 

[email protected] 

 

Tammy Dewitt – Adult Court Investigations 

Phone: 707-784-7540 

Fax: 707-784-7605 

[email protected] 

 

Shannon West – Resource and Barrier Removal, Adult Placement, Offender Link 

Phone:  707-784-6536 

Fax: 707-784-7605 

[email protected] 

 

Melani Zamora – Collaborative Courts, Domestic Violence, Sex Offender Supervision, Interstate Compact 

Phone: 707-784-6548 

Fax: 707-784-7605 

[email protected] 

 

Probation Services Manager 

 

Alisha Austin 

Phone:  707-553-5157 

Fax: 707-553-5021 

[email protected] 

 

Supervising Deputy Probation Officers 

 

Ashley Sly - Post-Release Community Supervision (PRCS) 

Phone: 707-784-7550 

Fax: 707-784-7605 

[email protected] 

 

Josh Blair – General Supervision 

Phone: 707-784-3505 

Fax: 707-784-7605 

[email protected] 

 

Probation Services Manager 

 

Kathleen Azevedo 

Phone: 707-784-6470 

[email protected] 

 

Supervising Deputy Probation Officer 

 

Crystal Turner – Center for Positive Change (CPC) 

Phone:  707-784-3994 

Fax: 707-784-7605 

[email protected] 

 

Vallejo Probation Office 

321 Tuolumne Street 

Second Floor 

Vallejo, CA 94590 

 

707-553-5531 - Office 

707-553-5021 – Fax 

 

Probation Services Manager 

 

Alisha Austin 

Phone:  707-553-5157 

Fax: 707-553-5021 

[email protected] 

 

Supervising Deputy Probation Officers 

 

Susie Manietta – OTS, DUI, and Field Supervision 

Phone: 705-553-5105 

Fax: 707-553-5021 

[email protected] 

 

Rocio Lopez - Post-Release Community Supervision 

Phone: 707-553-5079 

Fax: 707-553-5021 

[email protected] 

 

Crystal Riley – Center for Positive Change (CPC) 

Phone: 707-553-5235 

Fax: 707-553-5021 

[email protected]