C1-2023-27758: Water Quality Standards To Protect Aquatic Life in the Delaware River
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The proposed rule outlines water quality standards specifically designed to protect aquatic life in the Delaware River, focusing on dissolved oxygen levels during different seasons. It includes specific criteria for various developmental stages of aquatic species, detailing the acceptable concentration levels and durations for these standards.
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The rule, in full
267 words as published, January 08, 2024. View the original →
Federal Register, Volume 89 Issue 5 (Monday, January 8, 2024) [Federal Register Volume 89, Number 5 (Monday, January 8, 2024)] [Proposed Rules] [Page 896] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: C1-2023-27758] ======================================================================= ----------------------------------------------------------------------- ENVIRONMENTAL PROTECTION AGENCY 40 CFR Part 131 [EPA-HQ-OW-2023-0222; FRL 10760-01-OW] RIN 2040-AG30 Water Quality Standards To Protect Aquatic Life in the Delaware River Correction In proposed rule document 2023-27758, appearing on pages 88315- 88336 in the issue of Thursday, December 21, 2023, make the following correction: On page 88326, in the table titled ``Table 7: Alternative 1: Dissolved Oxygen Criteria Expressed as Concentration (mg/L)'', the table is corrected to appear as set forth below: Table 7--Alternative 1: Dissolved Oxygen Criteria Expressed as Concentration [mg/L] ---------------------------------------------------------------------------------------------------------------- Water Season temperature Magnitude (mg/ Duration Exceedance frequency ([deg]C) L) ---------------------------------------------------------------------------------------------------------------- Spawning and Larval Development * 23.3 (14.7) * 5.6 (6.7) Daily Average........ 10% (12 Days (March 1-June 30). Cumulative). Juvenile Development (July 1- \+\ N/A 5.4 Daily Average........ 10% (12 Days October 31). Cumulative). \+\ N/A 6.1 Daily Average........ 50% (61 Days Cumulative). Overwintering (November 1-February * 12.4 (5.6) * 7.0 (8.3) Daily Average........ 10% (12 Days 28/29). Cumulative). ---------------------------------------------------------------------------------------------------------------- \*\ The 90th percentile of seasonal water temperature and corresponding criterion is used for the main estimate, while the average water temperature and corresponding criterion is shown in parentheses. \+\ Water temperature is not applicable during the Juvenile Development season because the criteria magnitudes are derived from the EPA's Atlantic Sturgeon cohort model, described in section IV.C.1 of this preamble. [FR Doc. C1-2023-27758 Filed 1-5-24; 8:45 am] BILLING CODE 0099-10-P
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Documents
- Full text (Federal Register) · January 08, 2024
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