HOUSTON (AP) — The Latest on Tropical Depression Harvey (all times local):

6:30 p.m.

The Environmental Protection Agency says it's checking the smoke coming from a Houston-area chemical plant where highly unstable compounds have caught fire.

EPA spokesman David Gray said Friday that EPA surveillance aircraft is flying through the fire at the Arkema plant in Crosby to monitor any airborne toxic chemical and "will have information shortly."

It's the second day in a row that a fire has happened at the plant.

Arkema says Harvey's floodwaters engulfed its backup generators and knocked out the refri...