WILLIAMS FIELD SERVICES — Integrity Assurance Notification

INTERVALPlease accept this notice from Williams Companies (Williams) as formal notification required per 49 CFR 195.452(m) that Williams has made a substantial change to the Williams Liquid Integrity Management Plan. Williams is deferring required reassessment on the Overland Pass Pipeline (OPPL) System segment - 10493 Lucerne MTR STA TO LUCERNE JCT 6IN, 14.5 miles in length located near Greeley CO GPS (40.459404, -104.66336 to 40.459404, -104.39555), due to the status of the pipeline being changed from active to idle (including required purging of hazardous liquid, physically disconnecting pipeline from all possible sources of hazardous liquids and putting a nitrogen blanket on the pipeline). Maintaining a nitrogen blanket, in addition to active corrosion control protection, the pipeline will have no degradation over time and would not pose a threat to the public by deferring integrity assessment.#