Legacy Reserves Operating, LP — NPDES permit WY0024171: limits, due date and EPA's record

NPDES permit WY0024171 · Minor NON-POTW · expired 2023-10-31 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (43.1221, -107.82661); you set the radius.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 0 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

EPA's file shows no filings for this permit in this window. That is a statement about the file, not about the facility.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among WY permits in EPA's filings — check your permit).

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

Limits in force (64)

Outfall	Parameter	Statistic	Limit	Months
001	Specific conductance	daily maximum	<= 7500 umho/cm	all year
001	pH	instantaneous minimum	>= 6.5 SU	all year
001	pH	instantaneous maximum	<= 9 SU	all year
001	Sulfide, total [as S]	daily maximum	report only	all year
001	Sulfide, total [as S]	daily maximum	report only	all year
001	Sulfate, total [as SO4]	daily maximum	<= 3000 mg/L	all year
001	Chloride	daily maximum	<= 2000 mg/L	all year
001	Flow	daily maximum	report only	all year
001	Flow	daily maximum	report only	all year
001	Flow	monthly average	report only	all year
001	Flow	monthly average	report only	all year
001	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
001	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
002	Specific conductance	daily maximum	<= 7500 umho/cm	all year
002	pH	instantaneous minimum	>= 6.5 SU	all year
002	pH	instantaneous maximum	<= 9 SU	all year
002	Sulfide, total [as S]	daily maximum	report only	all year
002	Sulfide, total [as S]	daily maximum	report only	all year
002	Sulfate, total [as SO4]	daily maximum	<= 3000 mg/L	all year
002	Chloride	daily maximum	<= 2000 mg/L	all year
002	Flow	daily maximum	report only	all year
002	Flow	daily maximum	report only	all year
002	Flow	monthly average	report only	all year
002	Flow	monthly average	report only	all year
002	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
002	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
003	Specific conductance	daily maximum	<= 7500 umho/cm	all year
003	pH	instantaneous minimum	>= 6.5 SU	all year
003	pH	instantaneous maximum	<= 9 SU	all year
003	Sulfide, total [as S]	daily maximum	report only	all year
003	Sulfide, total [as S]	daily maximum	report only	all year
003	Sulfate, total [as SO4]	daily maximum	<= 3000 mg/L	all year
003	Chloride	daily maximum	<= 2000 mg/L	all year
003	Flow	daily maximum	report only	all year
003	Flow	daily maximum	report only	all year
003	Flow	monthly average	report only	all year
003	Flow	monthly average	report only	all year
003	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
003	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
004	Specific conductance	daily maximum	<= 7500 umho/cm	all year
004	pH	instantaneous minimum	>= 6.5 SU	all year
004	pH	instantaneous maximum	<= 9 SU	all year
004	Sulfide, total [as S]	daily maximum	report only	all year
004	Sulfide, total [as S]	daily maximum	report only	all year
004	Sulfate, total [as SO4]	daily maximum	<= 3000 mg/L	all year
004	Chloride	daily maximum	<= 2000 mg/L	all year
004	Flow	daily maximum	report only	all year
004	Flow	daily maximum	report only	all year
004	Flow	monthly average	report only	all year
004	Flow	monthly average	report only	all year
004	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
004	Produced water, oil and grease	daily maximum	<= 10 mg/L	all year
DMP1	pH	instantaneous minimum	report only	all year
DMP1	pH	instantaneous minimum	report only	all year
DMP1	pH	instantaneous maximum	report only	all year
DMP1	pH	instantaneous maximum	report only	all year
DMP1	Sulfide, total [as S]	daily maximum	report only	all year
DMP1	Sulfide, total [as S]	daily maximum	report only	all year
DMP4	pH	instantaneous minimum	report only	all year
DMP4	pH	instantaneous minimum	report only	all year
DMP4	pH	instantaneous maximum	report only	all year
DMP4	pH	instantaneous maximum	report only	all year
DMP4	Sulfide, total [as S]	daily maximum	report only	all year
DMP4	Sulfide, total [as S]	daily maximum	report only	all year