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The Contra Costa County District Attorney’s Office filed a felony complaint against Segundo Collazos, the owner of Amazon’s Landscaping Company based out of Concord.

The charges relate to the 2018 death of Manuel Peralta, then 68, of Antioch, California, who died while operating a rented tree stump grinder in San Ramon.

According to the OSHA report, Collazos and Peralta were working at the 3700 block of Segovia Court in San Ramon on April 9, 2018. Peralta had a rope tied around him and was tied to a Dosko stump grinder. The owner of the company was operating the stump grinder.

Peralta’s rope became entangled in the cutting wheel of the stump grinder, resulting in his being pulled into the grinder’s cutting wheel killing him.

Collazos, the company owner who had been operating the machine, was fined $54,750 for six workplace violations.

At the time of the incident, Collazos had a suspended license with the Contractors State License Board. The investigation began from the California Department of Industrial Relations’ Division of Occupational Safety & Health Bureau of Investigations.

The first felony alleges that defendant Collazos permitted the victim Manuel Peralta to use a stump grinder in a manner contrary to manufacturer recommendations and to work in the danger zone of the cutting wheel, resulting in his death.

The second felony alleges that Collazos failed to properly train Peralta on the proper and safe use of the stump grinder, also resulting in his death.

“Employers must be made aware that disregarding the requirement to train and supervise workers using dangerous equipment can lead to tragedy and possible jail time,” said Cal OSHA Chief Doug Parker in a statement.

The District Attorney’s Office reminds homeowners to check that a contractor is currently licensed and insured before hiring them for residential construction work. Homeowners can check the validity of a license number on the Contractors’ State Licensing Board website or call (800) 321-CSLB (2752).

Deputy District Attorney Ryan Morris is prosecuting the case on behalf of the People. DDA Morris is assigned to our Office’s Special Operations Division.