Warning Letter involving NORTHWEST PIPELINE LLC. PHMSA's enforcement data identifies the cited regulation as 192.463(a). The case was opened on 2003-05-30 and is reported as closed as of 2003-05-30. Open the official case record for notices, responses, orders, and the latest status.

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Regulations1

Regulation

49 CFR 192.463

External corrosion control: Cathodic protection.

192.463(a) · cited in enforcement

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Retrieved: Aug 20, 2026
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