Especially in the Watchung Mountains area. says Mark Annis, president of' Anco Environmental Services of Berkeley Heights. -of all the environmental haz-ards surrounding property transac-tions. radon. asbestos, lead paint. 1ctlroniuglintic tick". cite. petro-leum contamination can run into the tens of thousands of dollars to remediate.'Testing and the removal of leak-ing oil or petroleum tanks should be done regularly. Mark Annis Gillette advises. Click this site for more information on Mark Annis Gillette.