Officials are still trying to determine the exact source of the chemical leak in the Huron River in Flat Rock, but they have learned that the substance is coming from underwater.

The city of Flat Rock is seemingly dealing with yet another chemical leak, this time into a body of water parallel to the Huron River.

Most residents who needed to evacuate due to a gas leak at the Ford Flat Rock Assembly Plant may return home, health officials announced Thursday afternoon.

Officials with the Environmental Protection Agency are still testing the air quality.

Officials said screenings of sanitary sewers in Flat Rock show that gasoline has been cleared and the sewer system is considered back to normal operating conditions.

A gas leak from the Ford Flat Rock Assembly Plant triggered voluntary evacuations of the area and officials have been testing levels of gas in sewers and homes.

A gas leak from the Ford Flat Rock Assembly Plant triggered voluntary evacuations of the area and officials have been testing levels of gas in sewers and homes.

While the leak from the Ford Flat Rock Assembly Plant has been stopped, the situation is still raising concerns regarding the environmental and health impact to the area.

The Michigan Department of Health and Human Services (MDHHS) and Wayne County Health Department (WCHD) are recommending residents of the Flat Rock area bounded by I-75 to the east, Gibraltar Road to the north, Cahill Road to the west and Woodruff Road to the south evacuate their homes until further notice due to the potential risks caused by fumes from a gasoline leak from a storage tank at Ford Motor Company’s Flat Rock Assembly Plant.

As of Friday morning, seven homes have been evacuated and hundreds of environmental safety investigators are in the area.

Federal and state hazardous materials teams from Downriver and western Wayne County went street-by-street and door-to-door Thursday in Flat Rock’s southeast neighborhoods.

LA SALLE, Mich. – Dozens of fire crews battled a three-alarm fire Friday Morning at the Toledo Beach Marina in La Salle. ORIGINAL STORY: Video: Large fire burns at Toledo Beach Marina in Monroe CountyDec. 7 update: Fire chief: Cause of Toledo Beach Marina fire may never be determinedThe fire was called in just before 7 a.m. By noon, firefighters were able to get some of the flames under control, but there was still significant smoke from the area. At one point, the smoke was so thick, the flashing emergency lights of first responders could barely be seen. An entire building filled with hundreds of boats was nearly destroyed on the shore of Lake Erie. Despite being on the shore of Lake Erie, crews were unable to get enough water to battle the fire properly.

DETROIT – Here’s what you missed on Local 4 News at Noon. Hundreds of boats damaged as multiple crews battle Monroe County marina fireMonroe County Emergency Manager Mark Hammond said there have been no injuries reported, but hundreds, if not more, boats have been damaged or destroyed by the fire. Dozens of firefighters have responded.

LA SALLE, Mich. – Firefighters are on the scene of a three-alarm fire Friday at the Toledo Beach Marina in La Salle, Mich.Watch the video above showing the massive flames and thick smoke at the marina. Dec. 7 update: Fire chief: Cause of Toledo Beach Marina fire may never be determinedMonroe County Emergency Manager Mark Hammond said there have been no injuries reported, but hundreds, if not more, boats have been damaged or destroyed by the fire. Hammond said the biggest issue they face has been getting water to put out the fire because marinas like this one are meant for getting boats in the water, not for large trucks. They have been having a difficult time getting the fire trucks to a place where they can get water they can use. Here is a statement from the marina Friday morning, explaining all marina employees are safe and that an investigation into the cause is underway:“A fire occurred this morning at Safe Harbor Toledo Beach in LaSalle, Michigan.