HENDERSONVILLE, Tenn. -- There are new concerns about mold and air quality at another Hendersonville school.

An environmental testing company urged county school leaders to check for mold at Walton Ferry Elementary after one of its workers got sick while looking at the school’s duct system.

School officials were set to check the school again on Wednesday.

Sumner County put a geo-thermal heating and cooling system at Nannie Berry Elementary last year after a humidity problem caused mold throughout the school.