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Chevron U.S.A., Inc

Petroleum Refining, major discharger, Salt Lake City, Utah. NPDES permit UT0000175, in force until Jul 31, 2030. Last 12 months: over a limit 7 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 1 days after each period: form A monthly (42 values), form P quarterly (13 values), form W quarterly (1 value), form F yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 1 of 19 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
March 2026BOD, 5-day, 20 deg. C, 30-day average391 lb/d≤ 310 lb/d26%
March 2026BOD, 5-day, 20 deg. C, 30-day average57 mg/L≤ 25 mg/L128%
March 2026BOD, 5-day, 20 deg. C, daily maximum1119 lb/d≤ 558 lb/d101%
March 2026BOD, 5-day, 20 deg. C, maximum 7-day average196 mg/L≤ 35 mg/L460%
April 2026BOD, 5-day, 20 deg. C, 30-day average26 mg/L≤ 25 mg/L4%
April 2026BOD, 5-day, 20 deg. C, daily maximum1471 lb/d≤ 558 lb/d164%
April 2026BOD, 5-day, 20 deg. C, maximum 7-day average52 mg/L≤ 35 mg/L49%

Limits in force (58)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
BOD, 5-day, 20 deg. C30-day average≤ 25 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 35 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 310 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 558 lb/dall year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 25 mg/Lall year
Solids, total suspended7-day average≤ 35 mg/Lall year
Solids, total suspended30-day average≤ 248 lb/dall year
Solids, total suspendeddaily maximum≤ 389 lb/dall year
Oil and grease [soxhlet extr.] tot.30-day averagereport only (mg/L)all year
Oil and grease [soxhlet extr.] tot.daily maximumreport only (mg/L)all year
Oil and grease [soxhlet extr.] tot.30-day average≤ 91 lb/dall year
Oil and grease [soxhlet extr.] tot.daily maximum≤ 170 lb/dall year
Nitrogen, ammonia total [as N]30-day averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]30-day average≤ 150 lb/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 330 lb/dall year
Cyanide, total [as CN]quarterly averagereport only (mg/L)all year
Arsenic, total [as As]quarterly averagereport only (mg/L)all year
Cadmium, total [as Cd]quarterly averagereport only (mg/L)all year
Chromium, hexavalent [as Cr]30-day averagereport only (mg/L)all year
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year
Chromium, hexavalent [as Cr]30-day average≤ .25 lb/dall year
Chromium, hexavalent [as Cr]daily maximum≤ .68 lb/dall year
Chromium, total [as Cr]30-day averagereport only (mg/L)all year
Chromium, total [as Cr]quarterly averagereport only (mg/L)all year
Chromium, total [as Cr]daily maximumreport only (mg/L)all year
Chromium, total [as Cr]30-day average≤ 2.9 lb/dall year
Chromium, total [as Cr]daily maximum≤ 8.3 lb/dall year
Copper, total [as Cu]quarterly averagereport only (mg/L)all year
Iron, total [as Fe]quarterly averagereport only (mg/L)all year
Lead, total [as Pb]quarterly averagereport only (mg/L)all year
Thallium, total [as Tl]quarterly averagereport only (mg/L)all year
Nickel, total [as Ni]quarterly averagereport only (mg/L)all year
Silver, total [as Ag]quarterly averagereport only (mg/L)all year
Zinc, total [as Zn]quarterly averagereport only (mg/L)all year
Selenium, total [as Se]quarterly averagereport only (mg/L)all year
Phenolic compounds, total30-day averagereport only (mg/L)all year
Phenolic compounds, totaldaily maximumreport only (mg/L)all year
Phenolic compounds, total30-day average≤ 2 lb/dall year
Phenolic compounds, totaldaily maximum≤ 4.2 lb/dall year
Mercury, total [as Hg]quarterly averagereport only (mg/L)all year
Flowannual average≤ 2.6 MGDall year
Flow30-day averagereport only (MGD)all year
Flowdaily maximumreport only (MGD)all year
Chemical Oxygen Demand [COD]30-day averagereport only (mg/L)all year
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)all year
Chemical Oxygen Demand [COD]30-day average≤ 2156 lb/dall year
Chemical Oxygen Demand [COD]daily maximum≤ 4171 lb/dall year
Sulfide, total30-day averagereport only (mg/L)all year
Sulfide, totaldaily maximumreport only (mg/L)all year
Sulfide, total30-day average≤ 1.5 lb/dall year
Sulfide, totaldaily maximum≤ 3.3 lb/dall year
Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximum≤ 0 pass=0;fail=1Jan, Feb, Mar, Jul, Aug, Sep
Pass/Fail Static Renewal 48Hr Acute Pimephales promelasdaily maximum≤ 0 pass=0;fail=1Apr, May, Jun, Oct, Nov, Dec

How strict are these limits?

Cited limits by parameter: Utah's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/UT0000175 · MCP: https://passage-data.com/mcp