NPDES permit SC0021539 · Minor POTW · expired, expires 2023-05-31 · EPA's file as of 2026-09-19
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This permit expired on 2023-05-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-07-31. Most often over: %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia (4), E. coli (2), Nitrogen, ammonia total [as N] (1).
Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 6 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 30 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 45 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 150 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | WKLY AVG | <= 225 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 8.5 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 45 mg/L | all year |
| 001 | Solids, total suspended | MO AVG | <= 150 lb/d | all year |
| 001 | Solids, total suspended | WKLY AVG | <= 225 lb/d | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.13 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.91 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 1.69 mg/L | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 2.86 mg/L | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 6 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 10 lb/d | Jan, Feb, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 9 lb/d | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | WKLY AVG | <= 15 lb/d | Jan, Feb, Nov, Dec |
| 001 | Copper, total [as Cu] | MO AVG | report only | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | MO AVG | report only | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | MO AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | MO AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Thallium, total [as Tl] | MO AVG | <= .0005 mg/L | all year |
| 001 | Thallium, total [as Tl] | DAILY MX | <= .0008 mg/L | all year |
| 001 | Thallium, total [as Tl] | MO AVG | <= .0025 lb/d | all year |
| 001 | Thallium, total [as Tl] | DAILY MX | <= .004 lb/d | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .053 mg/L | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= .496 mg/L | all year |
| 001 | Nickel, total [as Ni] | MO AVG | <= .265 lb/d | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | <= 2.482 lb/d | all year |
| 001 | Zinc, total [as Zn] | MO AVG | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | MO AVG | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | WKLY AVG | report only | all year |
| 001 | Chlorine, total residual | MO AVG | <= .012 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .021 mg/L | all year |
| 001 | Chlorine, total residual | MO AVG | <= .06 lb/d | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .11 lb/d | all year |
| 001 | E. coli | 30DAVGEO | <= 126 MPN/100mL | all year |
| 001 | E. coli | DAILY MX | <= 349 MPN/100mL | all year |
| 001 | E. coli | 30DAVGEO | <= 126 MPN/100mL | all year |
| 001 | E. coli | DAILY MX | <= 800 MPN/100mL | all year |
| 001 | Mercury, total [as Hg] | MO AVG | <= 56 ng/L | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | <= 82 ng/L | all year |
| 001 | Mercury, total [as Hg] | MO AVG | <= 280 lb/d | all year |
| 001 | Mercury, total [as Hg] | DAILY MX | <= 411 lb/d | all year |
| 001 | BOD, 5-day, percent removal | MO AV MN | >= 85 % | all year |
| 001 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 001 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | MO AVG | <= 25 % | all year |
| 001 | %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | DAILY MX | <= 40 % | 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