CHEVRON U.S.A., INC

NPDES permit UT0000175 · Major NON-POTW · effective, expires 2030-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

7values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (7).

Reporting

Reports are due about 1 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (58)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheit30DA AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 25 mg/L all year
001BOD, 5-day, 20 deg. CMX 7D AV <= 35 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 310 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 558 lb/d all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspended30DA AVG <= 25 mg/L all year
001Solids, total suspended7 DA AVG <= 35 mg/L all year
001Solids, total suspended30DA AVG <= 248 lb/d all year
001Solids, total suspendedDAILY MX <= 389 lb/d all year
001Oil and grease [soxhlet extr.] tot.30DA AVG report only all year
001Oil and grease [soxhlet extr.] tot.DAILY MX report only all year
001Oil and grease [soxhlet extr.] tot.30DA AVG <= 91 lb/d all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 170 lb/d all year
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]30DA AVG <= 150 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 330 lb/d all year
001Cyanide, total [as CN]QRTR AVG report only all year
001Arsenic, total [as As]QRTR AVG report only all year
001Cadmium, total [as Cd]QRTR AVG report only all year
001Chromium, hexavalent [as Cr]30DA AVG report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Chromium, hexavalent [as Cr]30DA AVG <= .25 lb/d all year
001Chromium, hexavalent [as Cr]DAILY MX <= .68 lb/d all year
001Chromium, total [as Cr]30DA AVG report only all year
001Chromium, total [as Cr]QRTR AVG report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]30DA AVG <= 2.9 lb/d all year
001Chromium, total [as Cr]DAILY MX <= 8.3 lb/d all year
001Copper, total [as Cu]QRTR AVG report only all year
001Iron, total [as Fe]QRTR AVG report only all year
001Lead, total [as Pb]QRTR AVG report only all year
001Thallium, total [as Tl]QRTR AVG report only all year
001Nickel, total [as Ni]QRTR AVG report only all year
001Silver, total [as Ag]QRTR AVG report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Selenium, total [as Se]QRTR AVG report only all year
001Phenolic compounds, total30DA AVG report only all year
001Phenolic compounds, totalDAILY MX report only all year
001Phenolic compounds, total30DA AVG <= 2 lb/d all year
001Phenolic compounds, totalDAILY MX <= 4.2 lb/d all year
001Mercury, total [as Hg]QRTR AVG report only all year
001FlowANNL AVG <= 2.6 MGD all year
001Flow30DA AVG report only all year
001FlowDAILY MX report only all year
001Chemical Oxygen Demand [COD]30DA AVG report only all year
001Chemical Oxygen Demand [COD]DAILY MX report only all year
001Chemical Oxygen Demand [COD]30DA AVG <= 2156 lb/d all year
001Chemical Oxygen Demand [COD]DAILY MX <= 4171 lb/d all year
001Sulfide, total30DA AVG report only all year
001Sulfide, totalDAILY MX report only all year
001Sulfide, total30DA AVG <= 1.5 lb/d all year
001Sulfide, totalDAILY MX <= 3.3 lb/d all year
001Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaDAILY MX <= 0 pass=0;fail=1 Jan, Feb, Mar, Jul, Aug, Sep
001Pass/Fail Static Renewal 48Hr Acute Pimephales promelasDAILY MX <= 0 pass=0;fail=1 Apr, May, Jun, Oct, Nov, Dec

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