Dear K. Jittana,
We already complain to forklift company, they will come in to cleaning that area within today, if this case influence to water treatment then we will charge to them.
As I investigated, they just repaired the radiator which leaked then they was drained out the old water inside and replace with the new one.
However, as I mentioned above they need to keep area clean after repair and also avoid the waste water rinsed into the main drainage.
Please find the information that our purchasing complained to forklift company as attachment.