STEPAN CO

NPDES permit NJ0003182 · Minor NON-POTW · effective, expires 2028-06-30 · 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

2values over a limit
0required values missing, on 0 form(s)
1of 10 forms filed late

Last period with anything received: 2026-06-30. Most often over: BOD, 5-day, 20 deg. C (2).

Reporting

Reports are due about 26 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (26)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MIN report only all year
001Temperature, water deg. fahrenheitINST MAX report only all year
001Temperature, water deg. fahrenheitINST MIN report only all year
001Temperature, water deg. fahrenheitINST MAX <= 86 deg F all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Hydrocarbons, in H2O, IR, CC14 extractible chromatographMO AVG <= 10 mg/L all year
001Hydrocarbons, in H2O, IR, CC14 extractible chromatographINST MAX <= 15 mg/L all year
001Carbon, tot organic [TOC]MO AVG report only all year
001Carbon, tot organic [TOC]DAILY MX <= 20 mg/L all year
001Zinc, total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only 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
001Temp. diff. between intake and dischargeDAILY MX <= 20 deg F all year
001Alpha gross radioactivityMO AVG report only all year
001Alpha gross radioactivityDAILY MX <= 15 pCi/L all year
001IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 61 % 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