40 CFR § 711.20
When to report
June 9, 2020
All information reported to EPA in response to the requirements of this part must be submitted during an applicable submission period, which runs from June 1 to September 30 at 4-year intervals, beginning in 2020. In each submission period, any person described in §711.8 must report as described in this part.
[85 FR 20148, Apr. 9, 2020]