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Gas Production And/Or Distribution, York, South Carolina. NPDES permit SC0046248 expired Oct 31, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 10 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 8.5 SU | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year |
| Oil & Grease | monthly average | report only (mg/L) | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .5 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.8 mg/L | Jan, Feb, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1 mg/L | Mar–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.6 mg/L | Jan, Feb, Nov, Dec |
| 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 |
| Propane, 2-methoxy-2-methyl | monthly average | report only (mg/L) | all year |
| Propane, 2-methoxy-2-methyl | daily maximum | ≤ 52.5 mg/L | all year |
Cited limits by parameter: South Carolina's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/SC0046248 · MCP: https://passage-data.com/mcp