MARSHALL -- The air quality continues to improve in the red zone near the Big Oil Spill, and evacuation recommendations are being lifted on 70% of the homes where evacuations were suggested. Calhoun County Health Director Jim Rutherford says they will be going door to door to test.

He says he hopes to lift the rest of the evacuation by the weekend.

He says they may also be lifting the bottled water recommendations soon too, since they have yet to find any contamination at all in private water wells in the red zone.

Enbridge CEO Pat Daniels says there is another kind of pollution that may be evidence in the spill area for homeowners to deal with, noise pollution.

He says work crews working with heavy machinery should be done by the end of the month. He says they have purchased two homes and getting appraisals done on 6 more from river front homeowners interested in cashing out.