Firestone Agricultural Tire Company — NPDES permit IA0000671: limits, due date and EPA's record

Tires And Inner Tubes, Des Moines, Iowa. NPDES permit IA0000671 expired Sep 3, 2008; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (28)

Parameter	Statistic	Limit	Months	Outfall
pH	daily minimum	≥ 6 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	30-day average	≤ 30 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	001
Oil & Grease	30-day average	≤ 5 mg/L	all year	001
Oil & Grease	daily maximum	≤ 10 mg/L	all year	001
Chlorine, total residual	30-day average	≤ .053 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ .053 mg/L	all year	001
Chlorine, total residual	30-day average	≤ 68 Tthlb/d	all year	001
Chlorine, total residual	daily maximum	≤ 68 Tthlb/d	all year	001
pH	daily minimum	≥ 6 SU	all year	002
pH	daily maximum	≤ 9 SU	all year	002
Solids, total suspended	30-day average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	002
Oil & Grease	30-day average	≤ 5 mg/L	all year	002
Oil & Grease	daily maximum	≤ 10 mg/L	all year	002
pH	daily minimum	≥ 6 SU	all year	007
pH	daily maximum	≤ 9 SU	all year	007
Solids, total suspended	30-day average	≤ 30 mg/L	all year	007
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	007
Oil & Grease	30-day average	≤ 5 mg/L	all year	007
Oil & Grease	daily maximum	≤ 10 mg/L	all year	007
pH	daily minimum	≥ 6 SU	all year	008
pH	daily maximum	≤ 9 SU	all year	008
Solids, total suspended	30-day average	≤ 30 mg/L	all year	008
Solids, total suspended	daily maximum	≤ 45 mg/L	all year	008
Oil & Grease	30-day average	≤ 5 mg/L	all year	008
Oil & Grease	daily maximum	≤ 10 mg/L	all year	008

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IA0000671 · MCP: https://passage-data.com/mcp