| Answer | Crossword Clue |
|---|---|
| SMOG | An EPA concern |
| POLLUTANT | EPA concern |
| AQI | EPA concern |
| EMISSIONS | EPA concern |
| OZONE | EPA concern |
| TOXIN | EPA concern |
| ECOL | EPA concern |
| SMOG | EPA concern |
| ACIDRAIN | EPA concern |
| MPG | EPA concern |
| SEWAGE | EPA concern |
| ECOCIDE | EPA concern |
| SECONDHANDSMOKE | EPA concern |
| PCB | EPA concern |
| DDT | 1970s EPA concern |
| INAIR | Lead ..: EPA concern |
| DDT | EPA concern of the 1970s |
| AQI | EPA measure of concern to asthma sufferers |
