The gasoline release, explosion, and fire that resulted from the Olympic Pipeline rupture on June 10, 1999 in Bellingham, Washington affected approximately 4 kilometers of the Whatcom Creek system. One component of the response program involved remediation of the affected streambed sections. A combination of mechanical, manual, and hydraulic in situ treatment techniques were used to remove product from the streambed and stream banks. Much of this work involved placement of heavy equipment in the stream and manipulation of unconsolidated substrata. Several kilometers of the streambed being treated had been the subject of historical anthropogenic alterations substantially lowering the suitability of the stream to support salmon spawning and rearing. While the equipment was in the stream, a series of emergency restoration modifications were made to increase the suitability of the stream to support increased viable salmonid populations. Enhancement included: erosion control, provisions for pools, runs, riffles, effective use of groundwater infiltration providing colder water, enhancement of partial passage barriers, and installation of large woody debris. Work was completed by September 1999 prior to the return of spawning adult salmon. Subsequent data collected on the stream used by salmon indicates that the measures were successful. Integration of response, restoration, and enhancement allowed the accomplishment with very little interruption to the anadromous fish cycle following a substantial insult to the stream system.

This content is only available as a PDF.