| OTTAWA | |||||
| Serial Number | Name of the School | Number of Rooms Tested | Rooms => Action Level of 4 pCi/L | Maximum Radon Concentration( pCi/l ) | Year |
| 1 | BATAAN ELEMENTARY SCHOOL | 21 | 0 | 1.3 | 2004 |
| 2 | CATAWBA ELEMENTARY SCHOOL | 9 | 0 | 3.5 | 2004 |
| 3 | JEFFERSON ELEMENTARY SCHOOL | 13 | 0 | 1.1 | 2004 |
| 4 | PORT CLINTON HIGH SCHOOL | 62 | 0 | 2.0 | 2004 |
| 5 | PORT CLINTON MIDDLE SCHOOL | 17 | 1 | 4.5 | 2004 |
| 6 | PORTAGE ELEMENTARY SCHOOL | 20 | 0 | 2.9 | 2004 |