Late on Friday, November 9, 2007, Dow notified U.S. EPA that preliminary data for a sediment sample collected from within the channel of the Saginaw River was in excess of 1.6 parts per million (ppm) Dioxin TEQ. This is the highest TEQ analytical result recorded for either the Tittabawassee or Saginaw Rivers. On November 11, 2007, U.S. EPA issued a verbal General Notice Letter of Potential Liability to Dow.
On Monday, November 12, 2007, U.S. EPA, MDEQ and Dow representatives met at Wickes Park in the City of Saginaw to review site conditions and discuss U.S. EPA’s expectations for the conduct of an expedited time-critical removal action. An Administrative Order by Consent was signed by U.S. EPA and Dow on November 15, 2007, for the performance of the removal. Dow has collected physical site data such as river depth, velocity measurements, channel profile measurements, and collected additional sediment samples for waste characterization and dewatering studies.
The following tasks were completed by Dow’s contractor during the period from January 10, 2007 through July 15, 2008:
Submitted draft final report April 2008.
Submitted revised final report July 2008.
On August 4, 2008, OSC Augustyn approved the Final Report.
Dow has completed all removal and reporting requirements for this site.
All site restoration requirements were completed by May 5, 2008. The City of Saginaw conducted site walk troughs on May 7th and 13th.
U.S. EPA to submit cost recovery letters to Dow.
|
