CITY OF OAKLAND — NPDES permit IA0081523: limits, due date and EPA's record

NPDES permit IA0081523 · Minor NON-POTW · administratively continued, expires 2019-11-30 · EPA's file as of 2026-09-19

This permit expired on 2019-11-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-08-31. Most often over: Sulfate, total [as SO4] (2).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (30)

Outfall	Parameter	Statistic	Limit	Months
001	pH	DAILY MN	>= 6.5 SU	all year
001	pH	DAILY MX	<= 9 SU	all year
001	Solids, total suspended	30DA AVG	<= 30 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
001	Chloride [as Cl]	30DA AVG	<= 389 mg/L	all year
001	Chloride [as Cl]	DAILY MX	<= 629 mg/L	all year
001	Chloride [as Cl]	30DA AVG	<= 324 lb/d	all year
001	Chloride [as Cl]	DAILY MX	<= 524 lb/d	all year
001	Iron, total [as Fe]	30DA AVG	<= 1 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 1 mg/L	all year
001	Iron, total [as Fe]	30DA AVG	<= .834 lb/d	all year
001	Iron, total [as Fe]	DAILY MX	<= .834 lb/d	all year
002	pH	DAILY MN	>= 6.3 SU	all year
002	pH	DAILY MX	<= 9 SU	all year
002	Sulfate, total [as SO4]	30DA AVG	<= 3446 mg/L	all year
002	Sulfate, total [as SO4]	DAILY MX	<= 3446 mg/L	all year
002	Sulfate, total [as SO4]	30DA AVG	<= 4964 lb/d	all year
002	Sulfate, total [as SO4]	DAILY MX	<= 4964 lb/d	all year
002	Fluoride, total [as F]	30DA AVG	<= 18.835 mg/L	all year
002	Fluoride, total [as F]	DAILY MX	<= 18.835 mg/L	all year
002	Fluoride, total [as F]	30DA AVG	<= 26.933 lb/d	all year
002	Fluoride, total [as F]	DAILY MX	<= 26.933 lb/d	all year
002	Iron, total [as Fe]	30DA AVG	<= 2.332 mg/L	all year
002	Iron, total [as Fe]	DAILY MX	<= 2.332 mg/L	all year
002	Iron, total [as Fe]	30DA AVG	<= 3.335 lb/d	all year
002	Iron, total [as Fe]	DAILY MX	<= 3.335 lb/d	all year
002	Chlorine, total residual	30DA AVG	<= .474 mg/L	all year
002	Chlorine, total residual	DAILY MX	<= .474 mg/L	all year
002	Chlorine, total residual	30DA AVG	<= .914 lb/d	all year
002	Chlorine, total residual	DAILY MX	<= .914 lb/d	all year