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Welcome! You can chat with the CDX Help Desk using the Chat with Support button below.
The button to initiate a new chat will only display during business hours.
Chat is available Monday through Friday from 8:00AM to 6:00PM Eastern Time.
If you are attempting to contact the Help Desk outside of business hours you can email us at helpdesk@epacdx.net or call and leave a voicemail which we will return during business hours.
Phone: 1-888-890-1995
International Phone: 970-494-5500 https://cdx.epa.gov/Contact
Chat support is provided by Cherokee Nation System Solutions(CNSS)
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