COMMONWEALTH OIL REFINING COMPANY. INC — NPDES permit PR0000345: limits, due date and EPA's record

NPDES permit PR0000345 · Minor NON-POTW · administratively continued, expires 2024-07-31 · EPA's file as of 2026-09-19

This permit expired on 2024-07-31 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: 2026-07-31. Most often over: pH (1), Sulfide-hydrogen sulfide [undissociated] (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (51)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. centigrade	DAILY MX	<= 32.2 deg C	all year
001	Oxygen, dissolved [DO]	MINIMUM	>= 4 mg/L	all year
001	pH	MINIMUM	>= 7.3 SU	all year
001	pH	MAXIMUM	<= 8.5 SU	all year
001	Solids, settleable	DAILY MX	report only	all year
001	Oil & Grease	DAILY MX	report only	all year
001	Silver, total [as Ag]	DAILY MX	<= 2.24 ug/L	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	<= .288 MGD	all year
001	Sulfide-hydrogen sulfide [undissociated]	DAILY MX	<= 2 ug/L	all year
002	Temperature, water deg. centigrade	DAILY MX	<= 32.2 deg C	all year
002	Turbidity	DAILY MX	<= 10 NTU	all year
002	Color [PT-CO units]	DAILY MX	report only	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	<= 30 mg/L	all year
002	pH	MINIMUM	>= 7.3 SU	all year
002	pH	MAXIMUM	<= 8.5 SU	all year
002	Solids, settleable	DAILY MX	report only	all year
002	Oil & Grease	DAILY MX	report only	all year
002	Nitrogen, total [as N]	DAILY MX	<= 5000 ug/L	all year
002	Asbestos	DAILY MX	report only	all year
002	Arsenic, total [as As]	DAILY MX	<= 36 ug/L	all year
002	Cadmium, total [as Cd]	DAILY MX	<= 8.85 ug/L	all year
002	Chromium, hexavalent [as Cr]	DAILY MX	<= 50.35 ug/L	all year
002	Copper, total [as Cu]	DAILY MX	<= 3.73 ug/L	all year
002	Lead, total [as Pb]	DAILY MX	<= 8.52 ug/L	all year
002	Nickel, total [as Ni]	DAILY MX	<= 8.28 ug/L	all year
002	Zinc, total [as Zn]	DAILY MX	<= 85.62 ug/L	all year
002	Surfactants [MBAS]	DAILY MX	<= 500 ug/L	all year
002	Cyanide, free available	DAILY MX	<= 1 ug/L	all year
002	Mercury, total [as Hg]	DAILY MX	<= .051 ug/L	all year
002	Storm water flow	DAILY MX	report only	all year
003	Temperature, water deg. fahrenheit	DAILY MX	<= 90 deg F	all year
003	Turbidity	DAILY MX	<= 10 NTU	all year
003	Color [PT-CO units]	DAILY MX	report only	all year
003	BOD, 5-day, 20 deg. C	DAILY MX	<= 30 mg/L	all year
003	pH	MINIMUM	>= 7.3 SU	all year
003	pH	MAXIMUM	<= 8.5 SU	all year
003	Solids, settleable	DAILY MX	report only	all year
003	Oil & Grease	DAILY MX	report only	all year
003	Nitrogen, total [as N]	DAILY MX	<= 5000 ug/L	all year
003	Asbestos	DAILY MX	report only	all year
003	Arsenic, total [as As]	DAILY MX	<= 36 ug/L	all year
003	Cadmium, total [as Cd]	DAILY MX	<= 8.85 ug/L	all year
003	Chromium, hexavalent [as Cr]	DAILY MX	<= 50.35 ug/L	all year
003	Copper, total [as Cu]	DAILY MX	<= 3.73 ug/L	all year
003	Lead, total [as Pb]	DAILY MX	<= 8.52 ug/L	all year
003	Nickel, total [as Ni]	DAILY MX	<= 8.28 ug/L	all year
003	Zinc, total [as Zn]	DAILY MX	<= 85.62 ug/L	all year
003	Surfactants [MBAS]	DAILY MX	<= 500 ug/L	all year
003	Cyanide, free available	DAILY MX	<= 1 ug/L	all year
003	Mercury, total [as Hg]	DAILY MX	<= .051 ug/L	all year
003	Storm water flow	DAILY MX	report only	all year