But a spokeswoman said that tests of blood lead levels did not indicate exposure to high levels of the hazardous substance.

Workers are being tested on a voluntary basis and so far 24 people have been tested.

It was revealed last month that lead dust had been discovered at the home of the Old Bus Depot Markets.

The dust was found during $6.5 million renovations of the site and could have been in the building for many years prior.

The discovery delayed the reopening of the site as remediation works were expected to take three months.

The government is aiming to reopen the site for renovations in May.

Remediation works are expected to cost more than $650,000.

Dust samples collected during the renovation found lead particles with a reading above the acceptable threshold.

Air monitoring was set up in late January but all test result from that period showed the concentration of atmosphere lead was below detectable limits.

The Old Bus Depot Markets have been closed for 12 months, initially due to the COVID-19 lockdown and then due to renovations.

The ACT government has also dealt with lead dust found across four Canberra schools.

The discoveries prompted the Legislative Assembly to investigate the management of hazardous materials in schools.

The decision came after parents called for a long-term solution to deal with dangerous materials in the older schools across the city.

Yarralumla Primary School students were locked out of their classrooms for weeks after lead dust contaminated 11 rooms in the July school holidays last year.

In September, lead levels more than 100 times the acceptable threshold were found in an art storeroom at North Ainslie Primary School.

At the same time lead was discovered in the roof and wall cavities at Alfred Deakin High School.

Last month, it was revealed lead-contaminated dust was discovered at Richardson Primary School during routine maintenance on the heating system.

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