SOUTH SIOUX CITY, Neb. (AP) — City officials continue working with a company to eliminate a horrible odor that forced some residents of a South Sioux City neighborhood to leave their homes.

On Monday, the City Council approved an agreement with a company to begin testing for hydrogen sulfide in the homes affected by the odor.

The odor originates from the nearby Big Ox Energy plant and has spread through sewer lines beneath area homes.

A company official says about 60 homes have signed up for the testing, which will begin Thursday.

A long-term solution for the odor includes installing a separate industrial waste line, which would isolate the residential areas from industrial wastewater.

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