To find a list of ACS (American Chemical Society) journals without article processing charges (APCs), particularly in the fields of chemistry and environmental science, you can follow these steps:

1. Visit the American Chemical Society website at https://pubs.acs.org/.

2. Navigate to the "Journals" section of the website.

3. Use the search or filter options to narrow down the journals by subject area. Select "Chemistry" and "Environmental Science" or related categories.

4. Look for information about article processing charges (APCs) on the journal's webpage. Some journals may explicitly state that they do not charge APCs for publishing.

5. If you can't find information on APCs directly, you may need to contact the journal's editorial office or check the publication guidelines for more information.

Keep in mind that journal policies regarding APCs can vary, so it's essential to verify the information for each specific journal you're interested in.