Troy Brienzo

Week of February 16th

Andrew Fraieli

Andrew Fraieli

— 4 min read
Week of February 16th
Welcome to my weekly sum-up. Every Monday I send out a short summary of the last week’s officers that have landed on Colorado’s Peace Officer Standards and Training public database of law enforcement misconduct and actions. They are not necessarily all actions that have happened in the last week, but those that have been added, and consist of any other context I could find.

This past week saw a large batch of resignations while under investigation from all across the state.

Image courtesy of Robert Pino LinkedIn. Photo illustration by Andrew Fraieli

Robert Pino (CO-138236)

  • Resigned while under investigation as a sergeant with Monte Vista Police Department on Feb. 7
  • Previously acted as interim police chief when former Monte Vista Police chief Tyler Harford was charged with assault in the third degree and disorderly conduct.
  • Previously a corporal with Rio Grande Sheriff’s Office

Sources:

Image courtesy of Palmer Lake Police Department Facebook. Photo illustration by Andrew Fraieli

Holden Vanderpool (CO-8326-1158)

Sources:

Image courtesy of Castle Rock Police Department Facebook. Photo illustration by Andrew Fraieli

Sean Price (CO-502-214)

  • Terminated for cause as an officer with Castle Rock Police Department on Feb. 17
  • Graduated Highlands Ranch Law Enforcement Academy in June 2023 to join CRPD

Sources:

Image courtesy of FOX31. Photo illustration by Andrew Fraieli

Peter Markusen (CO-2124-4932)

Sources:

    • POST Database
Image courtesy of Devon Deherrera LinkedIn. Photo illustration by Andrew Fraieli

Devon Deherrera (CO-202-463)

  • Issued a Credibility Report on Feb. 17
  • Previously terminated for cause as an investigator with the Gaming Division of the Colorado Department of Revenue on Jan. 20, 2026
  • Reported on here.

Sources:

    • POST Database
Photo courtesy of Canon City Police Department Facebook page. Photo illustration by Andrew Fraieli

Taylor Lozano (CO-8706-9525)

  • Terminated for cause as an officer with Canon City Police Department on Feb. 11
  • Hired by CCPD in February 2020
  • No previous actions
  • No known former agencies

Sources:

    • POST Database
    • Canon City Police Department Facebook page
Image courtesy of Karl Kemper LinkedIn. Photo illustration by Andrew Fraieli

Karl Kemper (CO-4741-6005)

  • Resigned while under investigation from the Boulder County Sheriff's Office on Feb. 11
  • Hired by BCSO in January 2020
  • No previous actions
  • No known former agencies

Sources:

David Ocheltree (CO-808-017)

  • Resigned in lieu of termination for cause as an officer with Arvada Police Department on Feb. 9
  • No previous actions
  • No known former agencies

Sources:

    • POST Database

Shadrach Salazar (CO-5342-1439)

  • Arrested Feb. 14 for a domestic violence-related charge of assault in the third degree through knowingly or recklessly causing injury
  • Non-certified
  • No previous actions

Sources:

    • POST Database
    • Cocourts
Image courtesy of Parker Police Department. Photo illustration by Andrew Fraieli

Troy Brienzo (CO-8524-9275)

  • Resigned while under investigation as a sergeant with the Parker Police Department on Feb. 13
  • An undated letter from the 23rd Judicial District Attorney’s Office states that Brienzo was initially placed on administrative leave for allegedly violating town and police department policies related to sexual harassment, the Police Explorer program, prohibited activity, disciplinary action, standards of conduct and supervisory roles
  • Previously acted as advisor for the PPD explorer program, where youths 14 to 20 can “gain insight into law enforcement programs that offer hands-on career activities,” according to the program’s about page.
  • Since joining PPD in early 2017, Brienzo has won multiple awards including Officer of the Year through Parker’s Rotary Club just last year.
  • No previous actions
  • No known former agencies

Sources:

Jacob Pendergist (CO-202-402)

  • Criminally charged with harassment of someone in a public place through obscene language or gestures on Feb. 16
  • Non-certified civilian
  • No previous actions
  • No known former agencies

Sources:

    • POST Database

Guadalupe Arellano (CO-9144-6049)

  • Terminated for cause as a corrections officer with Prowers County Sheriff's Office on Feb. 13
  • No previous actions
  • No known former agencies

Sources:

    • POST Database

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