Firefighters arrived on scene to find a pile of building material well alight and wearing breathing apparatus, began to attack the fire.
The material is believed to be non-hazardous building waste.
Firefighters brought the blaze under control at 6:20am.
This is expected to be a protracted incident and crews will remain on scene to ensure it is safe.
FRV Scientific Officers are monitoring air conditions, and FRV is working with the EPA and site management.
Victoria Police is assisting with traffic control, and residents are advised to keep roads clear to allow access for emergency vehicles.
The wind is currently blowing the smoke in a southerly direction from the fire, towards Altona North and surrounding suburbs.
An advice message has been issued for residents in nearby areas including Altona, Altona Meadows, Altona North, Brooklyn, Laverton North, Seaholme, Williamstown, Williamstown North, Altona Gate, Laverton, Altona East, Seabrook, Newport, South Kingsville, Tottenham, Point Cook and Sunshine West.
Smoke will be visible from nearby roads and communities.
There is currently no threat to the community, but you should stay informed and monitor conditions.
At the height of the incident there were 65 FRV firefighters and more than 11 firefighting appliances on scene.
Reviewed 23 June 2021