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Interplastic Corporation

Plastics Materials And Resins, Pryor, Oklahoma. NPDES permit OK0044466, in force until Mar 31, 2031. Last 12 months: over a limit once (last May 2026), 4 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (6 values), outfall 001 form Q quarterly (3 values), outfall 002 form A monthly (6 values), outfall 002 form Q quarterly (3 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
May 2026Oxygen demand, chem. [high level] [COD], daily maximum304 mg/L≤ 150 mg/L103%

Limits in force (18)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
Oxygen demand, chem. [high level] [COD]daily maximum≤ 150 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 100 mg/Lall year001
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year001
Acetonedaily maximum≤ 1500 ug/Lall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year002
Oxygen demand, chem. [high level] [COD]daily maximum≤ 150 mg/Lall year002
pHminimum≥ 6.5 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendeddaily maximum≤ 100 mg/Lall year002
Oil and grease, hexane extr methoddaily maximum≤ 15 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year002
Acetonedaily maximum≤ 1500 ug/Lall year002

How strict are these limits?

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

Same industry: the 11 Chemicals and Allied Products permits in Oklahoma.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0044466 · MCP: https://passage-data.com/mcp