CHEVRON U.S.A. INC.

NPDES permit TX0118214 · Minor NON-POTW · effective, expires 2027-06-02 · 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

0values over a limit
2required values missing, on 2 form(s)
3of 36 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (32)

OutfallParameterStatisticLimitMonths
002Oxygen demand, chem. [high level] [COD]DAILY AV <= 170 mg/L all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 250 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 60 mg/L all year
002Oil & GreaseDAILY AV <= 10 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Copper, total [as Cu]DAILY AV <= .013 mg/L all year
002Copper, total [as Cu]DAILY MX <= .027 mg/L all year
002Lead, total [as Pb]DAILY MX <= .104 mg/L all year
002Nickel, total [as Ni]DAILY AV <= .046 mg/L all year
002Nickel, total [as Ni]DAILY MX <= .099 mg/L all year
002Zinc, total [as Zn]DAILY AV <= .141 mg/L all year
002Zinc, total [as Zn]DAILY MX <= .298 mg/L all year
002BenzeneDAILY MX <= .05 mg/L all year
002Petrol hydrocarbons, total recoverableDAILY MX <= 15 mg/L all year
002BTEXDAILY MX <= .5 mg/L all year
002Flow, in conduit or thru treatment plantDAILY AV <= .02 MGD all year
002Flow, in conduit or thru treatment plantDAILY MX <= .04 MGD all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 15 mg/L all year
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
004Oxygen demand, chem. [high level] [COD]DAILY MX <= 150 mg/L all year
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Flow, in conduit or thru treatment plantDAILY AV report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only 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