EPA v. Interstate Power and Light Company d/b/a Alliant Energy

Case summary

The respondent failed to comply with the On June 23, 2021, an Alliant Energy employee at the Prairie Creek Generating Station near Cedar Rapids, Iowa, observed that a valve on a tank full of sodium hypochlorite (bleach) solution had failed, causing the contents of the tank to be discharged into the Cedar River. The discharge violated Section 301(a) of the Clean Water Act because it resulted in an exceedance of the chlorine concentration and daily loading limits set forth in the facility?s NPDES permit. Alliant Energy has agreed to pay a $14,576 penalty to resolve the violation.

Defendants (1)

• Interstate Power and Light Company d/b/a Alliant ENamed in complaintNamed in settlement

Facilities (1)

• IPL - PRAIRIE CREEK GENERATING STATION

  3300 C STREET S.W., CEDAR RAPIDS, IA, 52404

  Registry ID: 110017344337

Statutes cited

• CWA 301/402 — NPDES Permit Violations

Enforcement conclusions (1)

• Interstate Power and Light Company d/b/a Alliant Energyentered 2022-09-21

  Primary law: CWA

  Federal penalty: $14,576

Timeline (5 milestones)

• 2022-09-21Complaint Filed/Proposed Order
• 2022-09-21Final Order Issued
• 2022-10-17Enforcement Action Data Entered
• 2022-10-21Enforcement Action Closed
• 2022-10-21NPDES Closed