According to Aunt Alexandra, a white man is trash when he is not born to a "classy" family. According to Atticus, a white man is trash when he cheats a black man.
"Because he is trash" is not a specific quote from "To Kill a Mockingbird." If you are looking for a specific page reference related to a character being described as trash, please provide more context to assist in locating the passage.
In "To Kill a Mockingbird," the town dump is located beyond the schoolyard and near the edge of the Negro settlement, known as the Quarters. It is described as a desolate and vacant area where the community's trash is disposed of.
You should read the book (it is good), then you could answer all these questions yourself.
It is near a garbage dump, a place where the trash of the community goes to. That includes the Ewell's home.
There are 31 chapters in "To Kill a Mockingbird".
The Production Budget for To Kill A Mockingbird was $2,000,000.
In To Kill a Mockingbird, Aunt Alexandra says that Walter Cunningham, Jr., cannot come over because he is trash.
To Kill a Mockingbird was directed by Robert Mulligan.
To Kill A Mockingbird was released on 12/25/1962.
The work cited for the book "To Kill a Mockingbird" is: Lee, Harper. To Kill a Mockingbird. HarperCollins, 1960.
To save a mockingbird
In To Kill a Mockingbird, Aunt Alexandra says that Walter Cunningham, Jr., cannot come over because he is trash.