The Diary of Pelly D by L.J. Adlington

This is the diary of Pelly D. It, s totally secret, so if you are reading it I hate you already.

The notebook is wrapped in faded brown paper, sealed in a battered water can. Toni V, who works on the City Five demolition crew, unearths it as he's drilling through concrete. He shouldn't smuggle it back to his room, and he definitely shouldn't read it. But he does. At first, Toni V thinks Pelly D is rich, stupid, and petty. Yet he can't help starting to care for her, especially as she begins to write about the gene tagging, the bombs, and the fighting. Her words slowly reveal the chilling state of her world. What happened to Pelly D? Toni V needs to know. He has only one clue:

Dig--dig everywhere.