Our Command Staff

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Chief NannengaDale Nannenga

Dale Nannenga became the Chief of Police for the Avondale Police Department in November 2013. Chief Nannenga was hired by the City of Avondale in 2004 and had previously held the position of Assistant Chief for the Operations Division. The Avondale Police Department consists of two divisions, the Operations Division and the Support Services Division, each supervised by an Assistant Chief. During his tenure with the Avondale Police Department he has supervised the Criminal Investigations Bureau which included such areas as the Persons/Property Unit, Special Victims Unit, Street Crimes Unit, School Resource Officers, the Identification Technician and the Property and Evidence Section.  He retired from the Tempe Police Department with 25 years of service. His law enforcement career includes service in the field training of new officers, hit and run investigations, narcotics investigations and the sex crimes detail.  Dale grew up in the Mesa area and has a Bachelor of Arts degree from Western Illinois University.  In 2007 Dale graduated from the FBI National Academy.

Assistant Chief Espinoza 2014Memo Espinoza

Memo Espinoza is an Assistant Chief overseeing the Support Division and Criminal Investigations of the Department. Memo grew up in Avondale and attended Agua Fria High School.  Memo is a former Marine and has been with the Avondale Police Department since July of 1997.  During Memo’s police officer career he has worked as a detective, corporal, sergeant, and lieutenant with experience in criminal investigations, hiring, recruitment and training and SRD Sergeant. Memo also served 6 years as a member of the Tactical Operations Unit (SWAT) as an operator and also is trained as a negotiator for the team.  Memo has also served as the Avondale Police Department’s Public Information Officer and was assigned as the Lieutenant for the Criminal Investigations Bureau. Memo earned a Bachelor’s Degree in Public Safety Administration from Grand Canyon University and his Master’s in Business Administration from the University of Phoenix.  He is also a graduate of the Northwestern University School of Police Staff and Command.

Lt. Bates 2014Albert Bates

Albert Bates has been with the Avondale Police Department since 2006, prior to that he spent almost 7 years with the Mesa Police Department.  Albert is originally from Lawton, Oklahoma but joined the United States Navy after High School.  Albert spent over 8 years in the Navy, serving onboard a command ship and a fast frigate before being assigned to recruiting duty in Arizona.  Albert is currently assigned to the Professional Standards Bureau; which is responsible for training, hiring, internal affairs, policy and procedures. Lt. Bates is also assigned as the tactical operations unit commander for the Police Department.   




Lt. Lopez 2014Varney Lopez

Varney Lopez, originally from California, moved to the Phoenix, AZ area at a young age. Lt. Lopez attended Phoenix area schools and in 2004 joined the Avondale Police Department. He has served in a variety of functions within the Department to include Field Training Officer (FTO), SWAT team member, and promoting to Sergeant. As a Sergeant, Lt. Lopez was assigned to work with several communities to include Cashion, the Sanctuary, Cambridge Estates, Coldwater Ridge and Las Ligas, establishing a positive relationship with the community by decreasing crime and improving the overall safety as well as the interaction with the Police Department. Lt. Lopez eventually became part of the Training Unit where he served as a Defensive Tactics Instructor, Taser Instructor, and Fitness Instructor, at the same time supervising the Field Trainers and training several new Officers. Lt. Lopez earned his Bachelor's Degree in Public Safety Administration and his Masters in Public Administration with an Emphasis in Government and Policy from Grand Canyon University. He is currently assigned to the Patrol Bureau.

Lt. Martin 2014Jonathon Martin

Jonathon Martin is a native of Arizona and grew up in Litchfield Park where he attended Agua Fria High School.  Jonathon has been with the Avondale Police Department since 2001.  During Jonathon’s career with the Avondale Police Department he has held several assignments: SWAT, Street Crimes Unit Detective, Patrol Sergeant, Property Crimes Sergeant, Persons Crimes Sergeant, Internal Affairs Sergeant, and Patrol Lieutenant.  Jonathon is currently the Criminal Investigations Bureau Lieutenant. Jonathon is currently working on his Bachelor’s degree in Public Safety Administration.




Lt. Redline 2014James Redline

James Redline has been with the department since 1999. He has been involved in several facets of the agency to include being a field training officer, a swat team operator, corporal, as well as a sergeant for almost 9 years. James was instrumental in creating the Community Action Team and leading the team to solve several high profile cases for several years before becoming a Patrol Lieutenant. James currently serves as the Criminal Investigation Bureau Lieutenant. 





Lt. Sgrillo 2014Mike Sgrillo

Mike Sgrillo has been with the Avondale Police Department since 1993 and is currently the Lieutenant for the Professional Standards Bureau, which oversees hiring, training, policies, and internal affairs.  As a Lieutenant Mike has also overseen patrol, detention, and criminal investigations.  During Mike's police officer career he has worked as a detective, sergeant with experience in criminal investigations and Field Training Officer. Mike also served as a member of the Tactical Operations Unit (SWAT) as an operator, a team leader and Team Commander.  Mike also trained as a negotiator for the team.  Mike has his Bachelor’s degree in Public Safety Administration from Grand Canyon University.




Kimberly Martinez 2014Kimberly Martinez

Kimberly Martinez was hired by the Avondale Police Department in April 2003.  Kimberly has over 25 years’ experience in business management and administration in both the private and public sectors.  Prior to coming to the Avondale Police Department, Kimberly served as an Administrative Services Officer with the Department of Corrections.  Currently, Kimberly is assigned as the Police Administration Manager.  In this position she is responsible for the overall fiscal management of the police department’s budget, grant writing and administration, and she manages the Records Bureau, 30 Day Tow Program, False Alarm/UCR Program, CAD-RMS Systems Analyst, and grants.  Kimberly has an Associate’s Degree in Accounting and Business Administration from Manchester Community Technical College, a Bachelor’s Degrees in Business Administration and Business Management from the University of Phoenix, and a Master’s Degree in Public Administration from Arizona State University.    


Mike FoliaMike Folia


Mike Folia became the Police Communications Manager for the Avondale Police Department in September of 2016. Mike has worked in Police Communications for over 12 years including eight years at the Peoria Police Department in Arizona. He was introduced to dispatching while working as Security for the Irvine Spectrum in Southern California. From there, he became a Dispatcher for Benton County Emergency Services in Washington state. In 2008, Mike lateralled to the Peoria Police Department where he continued to develop his career. In 2011 he became a Supervisor at the age of 24. He earned the Arizona APCO/NENA Supervisor of the Year in 2016. Mike is passionate about Police Communications and teaches courses on a variety of subjects in the field. He has several certifications including Organizational Leadership, Verbal Communications Tactics, Critical Incident Management, and 911 Ethics and Liability. Mike is also an Arizona Post General Instructor who specializes in Police Communications.