ADAMS COUNTY, Colo. (CBS4)– A fire at a recycling facility put out a lot of thick, black smoke over the Denver metro area on Tuesday afternoon.

(credit: CBS)

(credit: CBS)

The fire was burning at EVRAZ Recycling at 5601 York Street.

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Copter4 flew over the recycling fire (credit: CBS)

(credit: CBS)

Copter 4 flew over the fire which showed fire crews spraying the flames with water.

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Copter4 flew over the recycling fire (credit: CBS)

What caused the fire is being investigated.

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(credit: CBS)

Adams County officials say recommended residents stay indoors as Tri-County Health and the Colorado Department of Public Health and Environment were requested to monitor the air. Tri-County Health says there is currently no hazard based on their monitoring.