# PORTLAND HARBOR (GASCO SEDIMENTS EE/CA)
> **Administrative - Formal** · FY2009 · — · Final Order No Penalty
## Case
- **Activity ID:** `1800020399`
- **Case Number:** 10-2009-0255
- **Type:** Administrative - Formal
- **Lead:** EPA
- **Outcome:** Final Order No Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- NW NATURAL (settlement)
- SILTRONIC CORPORATION (settlement)
## Summary

AOC with NW Natural and Siltronic Corporation to perform a final sediment remedial investigation, EE/CA, and design for the Gasco Sediments site, which is within the boundaries of the Portland Harbor Superfund site.  Amendment removes Siltronic as a signing PRP.

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*Source: [EPA ECHO](https://echo.epa.gov/) · AI Analytics · CC0 1.0*