A fire at rubbish dump in Ayutthaya's Tha Rua took four hours to extinguish yesterday. The fire took place in a 2-rai section of the 30-rai dump site.
After the fire broke out about 9am yesterday, white smoke began to billow from the dump.
Concerns have been raised about possible adverse effects on residents.
Even though members of the nearest community, about 2km away, have yet to report any fire-related problems, the local Red Cross organisation began distributing 300 masks to people who could later be affected by the smoke.
Meanwhile, another fire broke out at YIDA (Thailand) Co, in Amata City Industrial Estate of Rayong yesterday.
Pluak Daeng district police were alerted to the fire about 8.30am.
Workers at the Chinese-owned plastic recycling factory made their escape while fire raged through an enormous stack of plastic nearby.
It took about 20 minutes to contain the fire, police said.
Afterwards black smoke continued to billow and spread to areas surrounding the factory.
The exact cause of the fire was unknown, as police were still probing the incident.
The fire caused substantial damage, the total cost of which has not yet been reported.
In Phayao province, communities living near a chemical warehouse in Chiang Kham district that was hit by fire on Sunday, were told to stop consuming water from natural sources. Officials want to make sure chemicals have not seaped into the underground water supply.
They have been advised to avoid consuming the water until the final results of tests on its safety have been released.
Members of 160 families have been provided with bottled drinking water by the local administration body to consume until their water sources have been deemed safe for consumption.
The test results are expected a week from now, said Prach Pingmuanglek.
Mr Prach is the head of University of Phayao's unit researching environmental issues.
He is leading the team conducting tests into water quality in the affected areas.
The Industrial Estate Authority of Thailand (IEAT), meanwhile, was accelerating the inspection of buildings at Union Zojirushi Co in Bang Chan Industrial Estate of Bangkok's Min Buri district that had been damaged by fire on Wednesday.
Wirapong Chaipherm, governor of the IEAT, said the buildings should be demolished.
He said several parts of the structure had been severely damaged and could contravene building safety regulations.
However, the final inspection results will not be ready for another week, Mr Wirapong said.