[CPEO-BIF] Forecasting an Engineering Control or Institutional Control Breach, A Study of Third-party Excavation Activity

[Lenny Siegel <lsiegel@cpeo.org>]

[The original of this posting has been inexplicably delayed in cyberspace. I apologize if it ends up being a duplicate. - LS]

From: Bob Wenzlau <bob@terradex.com>

Subject: Forecasting an Engineering Control or Institutional Control Breach, A Study of Third-party Excavation Activity

Date: September 25, 2013 11:15:18 AM PDT

To: brownfields@lists.cpeo.org

Forecasting an Engineering Control or Institutional Control Breach, A Study of Third-party Excavation Activity

by Bob Wenzlau
Terradex Monitor
September 25, 2013

Excavations by third-parties are inevitable near any cleanup site. Of concern to cleanup site managers, these unexpected events can breach institutional or engineering controls relied upon in a site’s cleanup remedy. Third-party excavators include utility companies, developers and contractors whose work is not part of the site cleanup process. Terradex completed an analysis of excavation records for 313 sites in California from utility clearance centers during a one year period, July 1, 2012 through June 30, 2013. The 313 sites cover about 250,000 acres. The findings offer a formula for reasonable predictions of annual excavation frequency near cleanup sites. Applying these insights can inform efforts for safer and enduring cleanup site remedies. 

Link: http://blog.terradex.com/2013/09/25/excavation-frequency

-- 

Bob Wenzlau
Terradex, Inc.
bob@terradex.com
(o) 650-227-3251
(c) 650-248-4467

Read Bob's Posts on the Monitor

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