40 CFR 122.48 : Protection Of Environment (§ 1.1 To Parts 1851-1899) — (Parts 100-103 To § 135.13) — Environmental Protection Agency (Continued) (Parts 100-103 To § 135.13) — Water Programs (Parts 100-103 To § 135.13) — Epa Administered Permit Programs: The National Pollutant Discharge Elimination System (§ 122.1 To Appendix J To Part 122) — Permit Conditions (§ 122.41 To § 122.50) — Requirements for recording and reporting of monitoring results (applicable to State programs, see § 123.25).

All permits shall specify:

(a) Requirements concerning the proper use, maintenance, and installation, when appropriate, of monitoring equipment or methods (including biological monitoring methods when appropriate);

(b) Required monitoring including type, intervals, and frequency sufficient to yield data which are representative of the monitored activity including, when appropriate, continuous monitoring;

(c) Applicable reporting requirements based upon the impact of the regulated activity and as specified in 40 CFR part 3 (Cross-Media Electronic Reporting Regulation), § 122.44, and 40 CFR part 127 (NPDES Electronic Reporting). Reporting shall be no less frequent than specified in § 122.44. EPA will maintain the start dates for the electronic reporting of monitoring results for each state on its Web site.