# KOCH MATERIALS CO MASON STREET

> EPA TRI Facility `60638KCHMT4900S` · CHICAGO, IL · Active

## Address
- 4900 S MASON AVE
- CHICAGO, IL 606381415
- County: COOK

## Mailing
- KOCH MATERIALS CO MASON STREET
- CHICAGO, IL 60638-1415

## Source
- EPA TRI Form R: https://www.epa.gov/toxics-release-inventory-tri-program/find-facility-tri-reports
- Envirofacts: https://www.epa.gov/enviro/facts-services-where-information-find-it