This is the third report on the Cumberland Piedmont Network's (CUPN's) efforts to monitor both ozone and ozone's associated foliar injury generated by the CUPN. This report includes data collected in calendar year (CY) 2010, displays results in tabular and graphic form (accompanied by a brief interpretation) and concludes with a summary of the key results and recommendations. The CUPN's ozone and foliar injury efforts in CY2010 focused on three parks: Chickamauga and Chattanooga National Military Park (CHCH), Mammoth Cave National Park (MACA) and Stones River National Battlefield (STRI). Since these parks were where efforts were focused on in CY2010, they will be hereafter referred to as the "focus parks." Results presented in this report are primarily based on data collected at these three parks.