CHEVRON USA, INC.
NPDES ID: UT0000175
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 3 effluent violations.
Violations
April 30, 2026
BOD, 5-day, 20 deg. C
4% over limit
Discharged 26 mg/L against a permitted limit of 25 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
49% over limit
Discharged 52 mg/L against a permitted limit of 35 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
164% over limit
Discharged 667.83399439 kg/d against a permitted limit of 253.33199787 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
101% over limit
Discharged 508.02599573 kg/d against a permitted limit of 253.33199787 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
128% over limit
Discharged 57 mg/L against a permitted limit of 25 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
460% over limit
Discharged 196 mg/L against a permitted limit of 35 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 177.51399851 kg/d against a permitted limit of 140.73999882 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
77% over limit
Discharged 62 mg/L against a permitted limit of 35 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
38% over limit
Discharged 350.48799706 kg/d against a permitted limit of 253.33199787 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)