Your information on this matter is incorrect. The proponents...

Your information on this matter is incorrect.
The proponents before SVL found elevated lead at the school. After months of campaigning by the action group, the Department of Education was persuaded to investigate. They found the lead contamination was historic and caused by lead paint. Extensive remediation occurred. The school is now lead free and the children are safe. There is a detailed report publicly available on the Department website.
In relation to lead in the environment, repeated mass water and blood lead level testing of the community by Laverty pathology and Western Sydney University found no lead contamination in tanks, streams or humans. This credible, reliable data is a baseline which will make it immediately detectable and actionable should opertions fail to prevent lead dust escaping from the site. They and you should really give up now.