CHS - MCPHERSON REFINERY

NPDES permit KS0000337 · Minor NON-POTW · effective, expires 2030-05-31 · 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 22 forms filed late

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

Reporting

Reports are due about 29 days after each monitoring period ends (the most common figure among KS permits in EPA's filings — check your permit).

Limits in force (71)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Apr
001BOD, 5-day, 20 deg. CMO AVG <= 22 mg/L Jun
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Oct
001BOD, 5-day, 20 deg. CMO AVG <= 22 mg/L Jul
001BOD, 5-day, 20 deg. CMO AVG <= 22 mg/L Aug
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Feb
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Mar
001BOD, 5-day, 20 deg. CMO AVG <= 22 mg/L Sep
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Dec
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L May
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Nov
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Jan
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Apr
001BOD, 5-day, 20 deg. CDAILY MX <= 33 mg/L Jun
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 33 mg/L Jul
001BOD, 5-day, 20 deg. CDAILY MX <= 33 mg/L Aug
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Feb
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Mar
001BOD, 5-day, 20 deg. CDAILY MX <= 33 mg/L Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L May
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L Nov
001Oxygen demand, chem. [high level] [COD]MO AVG report only all year
001Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 80 mg/L all year
001Solids, total suspendedDAILY MX <= 120 mg/L all year
001Oil & GreaseMO AVG <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 4.1 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 mg/L Jan
001Nitrogen, ammonia total [as N]MO AVG <= 5.3 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 1.9 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 6.3 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Mar
001Nitrogen, ammonia total [as N]DAILY MX <= 3.5 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Jan
001Nitrogen, ammonia total [as N]DAILY MX <= 10.2 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 4.2 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 3.5 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 3.5 mg/L Jul
001Nitrogen, ammonia total [as N]DAILY MX <= 6.3 mg/L May
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX <= 949 mg/L all year
001Chloride [as Cl]DAILY MX report only all year
001Selenium, total recoverableMO AVG report only all year
001Selenium, total recoverableDAILY MX report only all year
001ChlorideDAILY AV report only all year
001ChlorideDG <= 362 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Phosphorus, Total As PDAILY AV report only all year
001Phosphorus, Total As PDG <= .54 lb/d all year
SWDOil & GreaseDAILY MX <= 15 mg/L all year
SWDCarbon, tot organic [TOC]DAILY MX <= 110 mg/L 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