White Rock Oil and Gas, L.L.C.

NPDES permit WY0035491 · Minor NON-POTW · expired, expires 2023-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-06-30 and is expired: 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

2values over a limit
56required values missing, on 22 form(s)
51of 51 forms filed late

Last period with anything received: 2026-06-30. Most often over: Radium 226, total (1), Produced water, oil and grease (1).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (41)

OutfallParameterStatisticLimitMonths
001Specific conductanceDAILY MX <= 7500 umho/cm all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Sulfide, total [as S]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX <= 3000 mg/L all year
001Radium 226, totalDAILY MX <= 29 pCi/L Nov, Dec
001Radium 226, totalDAILY MX <= 20 pCi/L Jan, Feb
001Radium 226, totalDAILY MX <= 33 pCi/L Mar, Apr
001Radium 226, totalDAILY MX <= 60 pCi/L May, Jun, Jul, Aug, Sep, Oct
001ChlorideDAILY MX <= 230 mg/L all year
001FlowDAILY MX report only all year
001FlowDAILY MX report only all year
001FlowMO AVG report only all year
001FlowMO AVG report only all year
001Produced water, oil and greaseDAILY MX <= 10 mg/L all year
001Pass/Fail Static 48Hr Acute Ceriodaphnia dubia4C = 0 pass=0;fail=1 all year
001Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
002Specific conductanceDAILY MX <= 7500 umho/cm all year
002pHINST MIN >= 6.5 SU all year
002pHINST MAX <= 9 SU all year
002Sulfide, total [as S]DAILY MX report only all year
002Sulfate, total [as SO4]DAILY MX <= 3000 mg/L all year
002Radium 226, totalDAILY MX <= 29 pCi/L Nov, Dec
002Radium 226, totalDAILY MX <= 33 pCi/L Mar, Apr
002Radium 226, totalDAILY MX <= 60 pCi/L May, Jun, Jul, Aug, Sep, Oct
002Radium 226, totalDAILY MX <= 20 pCi/L Jan, Feb
002ChlorideDAILY MX <= 230 mg/L all year
002FlowDAILY MX report only all year
002FlowDAILY MX report only all year
002FlowMO AVG report only all year
002FlowMO AVG report only all year
002Produced water, oil and greaseDAILY MX <= 10 mg/L all year
002Pass/Fail Static 48Hr Acute Ceriodaphnia dubia4C = 0 pass=0;fail=1 all year
002Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
DMP2pHINST MIN >= 6.5 SU all year
DMP2pHINST MAX <= 9 SU all year
DMP2Sulfide, total [as S]DAILY MX report only all year
SUMFlowDAILY MX report only all year
SUMFlowDAILY MX report only all year
SUMFlowMO AVG <= 1.05 MGD all year
SUMFlowMO AVG <= 1.05 MGD all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states