Based on the provided story, here is the evaluation of its Tragedy Degree and Comedy Degree according to the criteria outlined:

**Tragedy Degree:**
- The story involves a situation that could have escalated into a major crisis, which adds some level of tension and concern.
- However, there were no significant emotional setbacks, personal losses, or deep tragic elements. The focus was more on problem-solving and teamwork.

**Comedy Degree:**
- The story is relatively light-hearted with a positive outcome. 
- There aren't many comedic elements, but the overall tone is uplifting and the story ends on a very happy note with the team's success and community recognition.

Taking these points into account, here is the JSON output with the scores:

```json
{
  "TragedyDegree": 3,
  "ComedyDegree": 5
}
```

Explanation:
- **TragedyDegree: 3**: The potential air quality crisis represents a moderate level of tension but lacks profound tragedy or emotional impact.
- **ComedyDegree: 5**: The story has a happy, uplifting ending and is light-hearted, though it doesn't feature strong comedic aspects.
