ATLANTA -- This year's Sweep the Hooch event is expected to be the biggest one yet.

The annual Chattahoochee River clean-up to slated to attract nearly 600 volunteers at a number of locations along the water.

Last year, Sweep the Hooch participants gathered up nearly four tons of trash.

"This is the kind of hands-on work that Chattahoochee Riverkeeper and our partners do that reaffirms our commitment to keeping our river clean," Chattahoochee Riverkeeper executive director Sally Bethea said in a statement. "We'll have volunteers paddling the river, wading in the water and combing the shoreline for trash."

Clean-up locations along the Chattahoochee River National Recreation Area run from Buford Dam to Paces Mill.

Sweep the Hooch will be Saturday, Apr. 13 from 9 a.m. to 1 p.m. To sign up as an individual or with a group, visit sweepthehooch.org.

ATLANTA -- Air Quality Awareness Week recently came to a close, and 15 metro Atlanta counties didn't quite make the clean air cut.

The U.S. Environmental Protection Agency recently changed its standards of attainment for ozone standards from .08 parts per billion to .075 parts.

The change means that 15 formerly compliant counties were re-designated at nonattainment for ground-level ozone: Bartow, Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Newton, Paulding and Rockdale.

To clean up the air, residents can try carpooling to work or taking MARTA if possible; fewer cars on the roads means more breathable air for everyone in metro Atlanta.

Learn more about how to reduce emissions and cut down on ozone at www.cleanaircampaign.org.

NORCROSS --  Saturday, April 7th is Norcross’ next Neighborhood Clean-up & Recycling Day, sponsored by the City of Norcross. Beginning as early as 8am, the City offers residents and visitors the opportunity to shred, dump, donate and unload unwanted materials with the assurance that all items will be properly recycled. There are different locations for each event, and volunteers on hand to help unload donations.

In 2011, Norcross was recognized as a Gold Level Award winner by the Atlanta Regional Commission for its exemplary efforts to implement sustainable initiatives into active community practices.