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Schlumberger - Kellyville

Oil And Gas Field Services, Kellyville, Oklahoma. NPDES permit OK0040622, in force until May 31, 2029. Last 12 months: no values over a limit, 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (13 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 12 reports late

Limits in force (13)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 25 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year
Chromium, total [as Cr]monthly average≤ 56.3 ug/Lall year
Chromium, total [as Cr]daily maximum≤ 82.1 ug/Lall year
Copper, total [as Cu]monthly average≤ 33.43 ug/Lall year
Copper, total [as Cu]daily maximum≤ 48.77 ug/Lall year
Oxidants, total residualinstantaneous maximum≤ .099 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Same industry: the 6 Oil and Gas Extraction permits in Oklahoma.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0040622 · MCP: https://passage-data.com/mcp