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Columbia Gas Transmission, LLC

Natural Gas Transmission, Chesapeake, Virginia. NPDES permit VA0092185, in force until Aug 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form Q1 quarterly (5 values), form A1 yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 4 reports late

Limits in force (10)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximumreport only (deg C)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmaximumreport only (mg/L)all year
Nitrogen, total [as N]maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year
Phosphorus, total [as P]maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year
Chlorine, total residualmaximum≤ 3.6 mg/Lall year

Cited limits by parameter: Virginia's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0092185 · MCP: https://passage-data.com/mcp