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Yarn Spinning Mills, major discharger, Calhoun Falls, South Carolina. NPDES permit SC0000299 expired Nov 30, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 90 deg F | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 117.7 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 181 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 319 lb/d | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 491 lb/d | all year |
| Oxygen demand, chem. [high level] [COD] | monthly average | ≤ 1502 mg/L | all year |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 2310 mg/L | all year |
| Oxygen demand, chem. [high level] [COD] | monthly average | ≤ 4070 lb/d | all year |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 6260 lb/d | all year |
| pH | instantaneous minimum | report only (SU) | all year |
| pH | instantaneous maximum | report only (SU) | all year |
| Solids, total suspended | monthly average | ≤ 170 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 340 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 461 lb/d | all year |
| Solids, total suspended | daily maximum | ≤ 923 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | ≤ 1.23 mg/L | all year |
| Phosphorus, total [as P] | daily maximum | ≤ 2.46 mg/L | all year |
| Phosphorus, total [as P] | monthly average | ≤ 2.04 lb/d | all year |
| Phosphorus, total [as P] | daily maximum | ≤ 4.08 lb/d | all year |
| Sulfide, total [as S] | monthly average | ≤ .09 mg/L | all year |
| Sulfide, total [as S] | daily maximum | ≤ .181 mg/L | all year |
| Sulfide, total [as S] | monthly average | ≤ .11 lb/d | all year |
| Sulfide, total [as S] | daily maximum | ≤ .21 lb/d | all year |
| Chromium, total [as Cr] | monthly average | ≤ .56 mg/L | all year |
| Chromium, total [as Cr] | daily maximum | ≤ 1.13 mg/L | all year |
| Chromium, total [as Cr] | monthly average | ≤ 2.12 lb/d | all year |
| Chromium, total [as Cr] | daily maximum | ≤ 4.24 lb/d | all year |
| Phenols | monthly average | ≤ .38 mg/L | all year |
| Phenols | daily maximum | ≤ .46 mg/L | all year |
| Phenols | monthly average | ≤ 1.44 lb/d | all year |
| Phenols | daily maximum | ≤ 1.71 lb/d | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | monthly average | ≤ .277 mg/L | all year |
| Chlorine, total residual | daily maximum | ≤ .392 mg/L | all year |
| E. coli | monthly average | ≤ 126 #/100mL | all year |
| E. coli | daily maximum | ≤ 349 #/100mL | all year |
| Mercury, total [as Hg] | monthly average | ≤ .051 ug/L | all year |
| Mercury, total [as Hg] | daily maximum | ≤ .074 ug/L | all year |
| Length of longest pH excursion | instantaneous maximum | ≤ 60 min | all year |
| % of time exceeding pH limits | instantaneous maximum | ≤ 1 % | all year |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | ≤ 25 % | all year |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | ≤ 40 % | all year |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | daily maximum | ≤ 0 pass=0;fail=1 | all year |
Cited limits by parameter: South Carolina's rules and the federal ones.
Same industry: the 14 Textile Mill Products permits in South Carolina.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/SC0000299 · MCP: https://passage-data.com/mcp