KENNECOTT UTAH COPPER, LLC

NPDES permit UT0000051 · Major NON-POTW · effective, expires 2027-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 78 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (217)

OutfallParameterStatisticLimitMonths
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMX MO AV <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Oil & GreaseDAILY MX <= 10 mg/L all year
002Cyanide, total [as CN]MX MO AV <= .0056 mg/L all year
002Cyanide, total [as CN]DAILY MX <= .0241 mg/L all year
002Arsenic, total [as As]MX MO AV <= .172 mg/L all year
002Arsenic, total [as As]DAILY MX <= .366 mg/L all year
002Cadmium, total [as Cd]MX MO AV <= .00079 mg/L all year
002Cadmium, total [as Cd]DAILY MX <= .008 mg/L all year
002Copper, total [as Cu]MX MO AV <= .0351 mg/L all year
002Copper, total [as Cu]DAILY MX <= .0557 mg/L all year
002Lead, total [as Pb]MX MO AV <= .0215 mg/L all year
002Lead, total [as Pb]DAILY MX <= .515 mg/L all year
002Zinc, total [as Zn]MX MO AV <= .224 mg/L all year
002Zinc, total [as Zn]DAILY MX <= .419 mg/L all year
002Selenium, total [as Se]MX MO AV <= .012 mg/L all year
002Selenium, total [as Se]DAILY MX report only all year
002Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
002Flow, in conduit or thru treatment plantMX MO AV <= 50 MGD all year
002Solids, total dissolvedMX MO AV report only all year
002Solids, total dissolvedDAILY MX report only all year
002Mercury, total [as Hg]MX MO AV <= .000013 mg/L all year
002Mercury, total [as Hg]DAILY MX <= .002 mg/L all year
002Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
004pHMINIMUM report only all year
004pHMAXIMUM report only all year
004Solids, total suspendedMX MO AV report only all year
004Oil and grease, hexane extr methodDAILY MX report only all year
004Arsenic, total [as As]MX MO AV report only all year
004Arsenic, total [as As]DAILY MX report only all year
004Cadmium, total [as Cd]MX MO AV report only all year
004Cadmium, total [as Cd]DAILY MX report only all year
004Copper, total [as Cu]MX MO AV report only all year
004Copper, total [as Cu]DAILY MX report only all year
004Lead, total [as Pb]MX MO AV report only all year
004Lead, total [as Pb]DAILY MX report only all year
004Zinc, total [as Zn]MX MO AV report only all year
004Zinc, total [as Zn]DAILY MX report only all year
004Selenium, total [as Se]MX MO AV report only all year
004Selenium, total [as Se]MX MO AV report only all year
004Selenium, total [as Se]DAILY MX report only all year
004Selenium, total [as Se]DAILY MX report only all year
004Selenium, total [as Se]YA <= 900 kg/yr all year
004Selenium, total [as Se]QT report only all year
004Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
004Flow, in conduit or thru treatment plantMX MO AV report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Solids, total dissolvedMX MO AV report only all year
004Solids, total dissolvedDAILY MX report only all year
004Mercury, total [as Hg]MX MO AV report only all year
004Mercury, total [as Hg]DAILY MX report only all year
004Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
007pHDAILY MN >= 6.5 SU all year
007pHDAILY MX <= 9 SU all year
007Solids, total suspendedMX MO AV <= 20 mg/L all year
007Solids, total suspendedDAILY MX <= 30 mg/L all year
007Oil & GreaseDAILY MX <= 10 mg/L all year
007Cyanide, total [as CN]MX MO AV <= .0056 mg/L all year
007Cyanide, total [as CN]DAILY MX <= .0291 mg/L all year
007Arsenic, total [as As]MX MO AV <= .222 mg/L all year
007Arsenic, total [as As]DAILY MX <= .427 mg/L all year
007Cadmium, total [as Cd]MX MO AV <= .00089 mg/L all year
007Cadmium, total [as Cd]DAILY MX <= .0093 mg/L all year
007Copper, total [as Cu]MX MO AV <= .0458 mg/L all year
007Copper, total [as Cu]DAILY MX <= .065 mg/L all year
007Lead, total [as Pb]MX MO AV <= .0284 mg/L all year
007Lead, total [as Pb]DAILY MX <= .605 mg/L all year
007Zinc, total [as Zn]MX MO AV <= .224 mg/L all year
007Zinc, total [as Zn]DAILY MX <= .5 mg/L all year
007Selenium, total [as Se]MX MO AV <= .012 mg/L all year
007Selenium, total [as Se]DAILY MX report only all year
007Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
007Flow, in conduit or thru treatment plantMX MO AV <= 15 MGD all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Solids, total dissolvedMX MO AV report only all year
007Solids, total dissolvedDAILY MX report only all year
007Mercury, total [as Hg]MX MO AV <= .000015 mg/L all year
007Mercury, total [as Hg]DAILY MX <= .002 mg/L all year
007Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
008pHDAILY MN >= 6.5 SU all year
008pHDAILY MX <= 9 SU all year
008Solids, total suspendedMX MO AV <= 20 mg/L all year
008Solids, total suspendedDAILY MX <= 30 mg/L all year
008Oil & GreaseDAILY MX <= 10 mg/L all year
008Arsenic, total [as As]MX MO AV <= .25 mg/L all year
008Arsenic, total [as As]DAILY MX <= .5 mg/L all year
008Cadmium, total [as Cd]MX MO AV <= .05 mg/L all year
008Cadmium, total [as Cd]DAILY MX <= .1 mg/L all year
008Copper, total [as Cu]MX MO AV <= .15 mg/L all year
008Copper, total [as Cu]DAILY MX <= .3 mg/L all year
008Lead, total [as Pb]MX MO AV <= .3 mg/L all year
008Lead, total [as Pb]DAILY MX <= .6 mg/L all year
008Zinc, total [as Zn]MX MO AV <= .224 mg/L all year
008Zinc, total [as Zn]DAILY MX <= .5 mg/L all year
008Selenium, total [as Se]DAILY MX <= .054 mg/L all year
008Selenium, total [as Se]DAILY MX <= .054 mg/L all year
008Selenium, total [as Se]YA <= 900 kg/yr all year
008Selenium, total [as Se]QT report only all year
008Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
008Flow, in conduit or thru treatment plantMX MO AV <= 5.5 MGD all year
008Solids, total dissolvedMX MO AV report only all year
008Solids, total dissolvedDAILY MX report only all year
008Mercury, total [as Hg]MX MO AV <= .001 mg/L all year
008Mercury, total [as Hg]DAILY MX <= .002 mg/L all year
008Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
009pHDAILY MN >= 6.5 SU all year
009pHDAILY MX <= 9 SU all year
009Solids, total suspendedMX MO AV <= 20 mg/L all year
009Solids, total suspendedDAILY MX <= 30 mg/L all year
009Oil & GreaseDAILY MX <= 10 mg/L all year
009Arsenic, total [as As]MX MO AV <= .25 mg/L all year
009Arsenic, total [as As]DAILY MX <= .5 mg/L all year
009Cadmium, total [as Cd]MX MO AV <= .00158 mg/L all year
009Cadmium, total [as Cd]DAILY MX <= .0021 mg/L all year
009Copper, total [as Cu]MX MO AV <= .0172 mg/L all year
009Copper, total [as Cu]DAILY MX <= .0155 mg/L all year
009Lead, total [as Pb]MX MO AV <= .0012 mg/L all year
009Lead, total [as Pb]DAILY MX <= .0716 mg/L all year
009Zinc, total [as Zn]MX MO AV <= .228 mg/L all year
009Zinc, total [as Zn]DAILY MX <= .144 mg/L all year
009Selenium, total [as Se]MX MO AV <= .012 mg/L all year
009Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
009Flow, in conduit or thru treatment plantMX MO AV <= .086 MGD all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Solids, total dissolvedDAILY MX report only all year
009Mercury, total [as Hg]MX MO AV <= .001 mg/L all year
009Mercury, total [as Hg]DAILY MX <= .002 mg/L all year
009Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
010pHDAILY MN >= 6.5 SU all year
010pHDAILY MX <= 9 SU all year
010Solids, total suspendedMX MO AV <= 20 mg/L all year
010Solids, total suspendedDAILY MX <= 30 mg/L all year
010Oil & GreaseDAILY MX <= 10 mg/L all year
010Arsenic, total [as As]DAILY MX <= .1 mg/L all year
010Cadmium, total [as Cd]MX MO AV <= .0013 mg/L all year
010Cadmium, total [as Cd]DAILY MX <= .0066 mg/L all year
010Copper, total [as Cu]DAILY MX <= .038 mg/L all year
010Iron, total [as Fe]DAILY MX <= 1.09 mg/L all year
010Lead, total [as Pb]MX MO AV <= .023 mg/L all year
010Lead, total [as Pb]DAILY MX <= .1 mg/L all year
010Zinc, total [as Zn]MX MO AV <= .323 mg/L all year
010Zinc, total [as Zn]DAILY MX <= .493 mg/L all year
010Selenium, total [as Se]MX MO AV <= .005 mg/L all year
010Selenium, total [as Se]DAILY MX <= .0184 mg/L all year
010Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
010Flow, in conduit or thru treatment plantMX MO AV <= .65 MGD all year
010Solids, total dissolvedDAILY MX <= 1200 mg/L all year
010Mercury, total [as Hg]MX MO AV <= .00002 mg/L all year
010Mercury, total [as Hg]DAILY MX <= .00023 mg/L all year
010Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
011pHDAILY MN >= 6.5 SU all year
011pHDAILY MX <= 9 SU all year
011Solids, total suspendedMX MO AV <= 20 mg/L all year
011Solids, total suspendedDAILY MX <= 30 mg/L all year
011Oil & GreaseDAILY MX <= 10 mg/L all year
011Arsenic, total [as As]DAILY MX <= .013 mg/L all year
011Cadmium, total [as Cd]MX MO AV <= .0013 mg/L all year
011Cadmium, total [as Cd]DAILY MX <= .01 mg/L all year
011Copper, total [as Cu]MX MO AV <= .102 mg/L all year
011Copper, total [as Cu]DAILY MX <= .119 mg/L all year
011Lead, total [as Pb]MX MO AV <= .0662 mg/L all year
011Lead, total [as Pb]DAILY MX <= .01 mg/L all year
011Zinc, total [as Zn]MX MO AV <= .224 mg/L all year
011Zinc, total [as Zn]DAILY MX <= .5 mg/L all year
011Selenium, total [as Se]MX MO AV <= .0058 mg/L all year
011Selenium, total [as Se]DAILY MX <= .013 mg/L all year
011Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
011Flow, in conduit or thru treatment plantMX MO AV <= 3.9 MGD all year
011Duration of dischargeTOTAL report only all year
011Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
012pHDAILY MN >= 6.5 SU all year
012pHDAILY MX <= 9 SU all year
012Solids, total suspendedMX MO AV <= 20 mg/L all year
012Solids, total suspendedDAILY MX <= 30 mg/L all year
012Oil & GreaseDAILY MX <= 10 mg/L all year
012Cyanide, total [as CN]MX MO AV <= .1 mg/L all year
012Cyanide, total [as CN]DAILY MX <= .2 mg/L all year
012Arsenic, total [as As]MX MO AV <= .25 mg/L all year
012Arsenic, total [as As]DAILY MX <= .5 mg/L all year
012Cadmium, total [as Cd]MX MO AV <= .05 mg/L all year
012Cadmium, total [as Cd]DAILY MX <= .1 mg/L all year
012Copper, total [as Cu]MX MO AV <= .15 mg/L all year
012Copper, total [as Cu]DAILY MX <= .3 mg/L all year
012Lead, total [as Pb]MX MO AV <= .3 mg/L all year
012Lead, total [as Pb]DAILY MX <= .6 mg/L all year
012Zinc, total [as Zn]MX MO AV <= .224 mg/L all year
012Zinc, total [as Zn]DAILY MX <= .5 mg/L all year
012Selenium, total [as Se]DAILY MX <= .054 mg/L all year
012Selenium, total [as Se]DAILY MX <= .054 mg/L all year
012Selenium, total [as Se]YA <= 900 kg/yr all year
012Floating solids, waste or visible foam-visualINST MAX <= 0 N=0;Y=1 all year
012Flow, in conduit or thru treatment plantANNL MAX <= 6468 Mgal/yr all year
012Solids, total dissolvedMX MO AV report only all year
012Solids, total dissolvedDAILY MX report only all year
012Mercury, total [as Hg]MX MO AV <= .001 mg/L all year
012Mercury, total [as Hg]DAILY MX <= .002 mg/L all year
012Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
012Pass/Fail Static 96 Hr Acute Cyprinodon VariegaDAILY MX <= 0 pass=0;fail=1 all year
012Pass/Fail Static 4 Day Chronic Cyprinodon VariegaQB <= 0 pass=0;fail=1 all year
104Solids, total suspendedMX MO AV <= 237 lb/d all year
104Solids, total suspendedDAILY MX <= 296 lb/d all year
104Arsenic, total [as As]MX MO AV <= 11.3 lb/d all year
104Arsenic, total [as As]DAILY MX <= 27.4 lb/d all year
104Cadmium, total [as Cd]MX MO AV <= 1.57 lb/d all year
104Cadmium, total [as Cd]DAILY MX <= 3.93 lb/d all year
104Copper, total [as Cu]MX MO AV <= 12.1 lb/d all year
104Copper, total [as Cu]DAILY MX <= 25.3 lb/d all year
104Lead, total [as Pb]MX MO AV <= 2.56 lb/d all year
104Lead, total [as Pb]DAILY MX <= 5.51 lb/d all year
104Zinc, total [as Zn]MX MO AV <= 8.26 lb/d all year
104Zinc, total [as Zn]DAILY MX <= 20.1 lb/d all year
104Flow, in conduit or thru treatment plantMX MO AV report only all year
104Flow, in conduit or thru treatment plantDAILY MX report only all year
SUMSelenium, total [as Se]TOTAL report only all year
SUMSelenium, total [as Se]ANNL TOT <= 900 kg/yr 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