The 102nd street chemical landfill is a place where people used to dump chemicals that are harmful to the environment and the people around them. It's like throwing your trash in a big hole, but instead of regular trash, they put chemicals that can hurt people and animals and make the soil and water dirty.
The chemicals that were put in this landfill were mostly from factories and industries that produced things like paint, pesticides, and other harmful substances. Instead of getting rid of these chemicals properly, they just threw them into this big hole in the ground.
But over time, people realized that this was not a good way to dispose of these chemicals. The chemicals were starting to leak out of the landfill and pollute the soil and water around it. This could make people sick and harm the environment.
So, now many people are working together to clean up the 102nd street chemical landfill. They are removing the harmful chemicals that are still there and making sure that they are disposed of in a safe way. This will help to protect the people and the environment around the landfill.