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Scot Forge Company

Iron And Steel Forgings, Spring Grove, Illinois. NPDES permit IL0077909, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form 0 monthly (42 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (43)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly maximum≤ 63 deg FJan, Feb, Mar, Dec
Temperature, water deg. fahrenheitmonthly maximum≤ 93 deg FApr–Nov
pHmonthly minimum≥ 6.5 SUall year
pHmonthly maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 30 mg/Lall year
Solids, total suspended30-day average≤ 6.3 lb/dall year
Solids, total suspendeddaily maximum≤ 13 lb/dall year
Oil & Grease30-day average≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 30 mg/Lall year
Oil & Grease30-day average≤ 6.3 lb/dall year
Oil & Greasedaily maximum≤ 13 lb/dall year
Cyanide, total [as CN]30-day average≤ .1 mg/Lall year
Cyanide, total [as CN]daily maximum≤ .2 mg/Lall year
Cyanide, total [as CN]30-day average≤ .042 lb/dall year
Cyanide, total [as CN]daily maximum≤ .083 lb/dall year
Chromium, total [as Cr]30-day average≤ 1 mg/Lall year
Chromium, total [as Cr]daily maximum≤ 2 mg/Lall year
Chromium, total [as Cr]30-day average≤ .42 lb/dall year
Chromium, total [as Cr]daily maximum≤ .84 lb/dall year
Copper, total [as Cu]30-day average≤ .5 mg/Lall year
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year
Copper, total [as Cu]30-day average≤ .21 lb/dall year
Copper, total [as Cu]daily maximum≤ .42 lb/dall year
Lead, total [as Pb]30-day average≤ .2 mg/Lall year
Lead, total [as Pb]daily maximum≤ .4 mg/Lall year
Lead, total [as Pb]30-day average≤ .083 lb/dall year
Lead, total [as Pb]daily maximum≤ .17 lb/dall year
Nickel, total [as Ni]30-day average≤ 1 mg/Lall year
Nickel, total [as Ni]daily maximum≤ 2 mg/Lall year
Nickel, total [as Ni]30-day average≤ .42 lb/dall year
Nickel, total [as Ni]daily maximum≤ .83 lb/dall year
Zinc, total [as Zn]30-day average≤ 1 mg/Lall year
Zinc, total [as Zn]daily maximum≤ 2 mg/Lall year
Zinc, total [as Zn]30-day average≤ .42 lb/dall year
Zinc, total [as Zn]daily maximum≤ .83 lb/dall year
Aluminum, total [as Al]30-day averagereport only (mg/L)all year
Aluminum, total [as Al]daily maximumreport only (mg/L)all year
Aluminum, total [as Al]30-day average≤ .24 lb/dall year
Aluminum, total [as Al]daily maximum≤ .24 lb/dall year
Temperature, length of excursionannual total≤ 87 hr/12moall 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: Illinois's rules and the federal ones.

Same industry: the 8 Fabricated Metal Products permits in Illinois.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0077909 · MCP: https://passage-data.com/mcp