Author Archives: Bob Wenzlau

Bob’s goal has been to build the “institution” for institutional controls. The building blocks include a strong understanding of regulatory and technical requirements of stewardship, and an arsenal of multiple information and mapping techniques. Bob is a registered civil engineer, graduate of Stanford and is a founder and now CEO of Terradex, Inc.

USEPA Releases Final Guidance for Implementing Institutional Controls

The USEPA issued the Final Guide to Planning, Implementing, Maintaining and Enforcing (PIME) Institutional Controls at Contaminated Sites.  This is the second of two guidance documents prepared by the USEPA to inform long-term stewardship of contaminated sites.  In 2000, the first guide was drafted with a focus toward the selection of institutional controls (ICs). In 2000 […]

Terradex Gains GSA Contract Vehicle to Serve Federal Clients

Terradex, a unique and pioneering provider of information-based long-term stewardship (LTS) services, is pleased to announce its award of U.S. General Services Administration (GSA) Schedule 899 Contract for Environmental Services (Contract number GA-10F-009AA). Through this GSA contract, federal clients can tailor and procure the Terradex LandWatch and similar LTS services they need to support remedy protection […]

Dig Clean Excavation Advisory Begins in Delaware

As another step towards increased environmental agency integration into one-call systems, on December 17, 2012 Terradex expanded its Dig Clean service on behalf of the Delaware Department of Natural Resources and Environmental Conservation (DNREC).   Terradex Dig Clean builds near real-time advisories that it sends to contractors and designers after they submit “locate requests” but  before […]

Off-site Groundwater Plumes – Terradex LandWatch Is A Risk Manager’s Best Friend

Groundwater contamination plumes often migrate off-site beyond the site where the chemicals were released.   The fate of the off-site plume poses a vexing risk management challenge for the regulator, potential responsible parties and even affected local governments.  Terradex’s LandWatch is an efficient and effective adjunct to the risk management plan for an off-site plume. […]

USEPA Issues Policy Guidance on Evaluation of Institutional Controls

The USEPA released on September 13, 2011 new guidance titled “Recommended Evaluation of Institutional Controls: Supplement to the Comprehensive Five Year Review Guidance”  providing recommendations for the monitoring and inspection of ICs during the CERCLA five-year review process.  The new USEPA guidance recommends that “ICs be mentioned specifically in the overall protectiveness statement when long-term protectiveness […]

Financial Health Monitoring of Institutional Control Property Owners

The long term success of Institutional Controls (ICs) and cleanup remedies is often only as strong as the financial health of new property owners.   This is why, along with its classic suite of land monitoring, Terradex LandWatch now monitors the financial health of contaminated property owners. When new owners take over IC sites or residually […]

Where is the Water Well? The Competing Interests of Homeland Security and Environmental Health

Can you find the location of a water well in on a governmental mapping system? The answer is maybe – and it varies nationwide. A strong tension between the environmental health protection and safeguards for homeland security controls whether you will find that water well.  Environmental health protection invites for more  transparency in water well locations […]

USEPA Congratulates ASTM Task Group for Completed Guidance on Continuing Obligations

The ASTM Task Group that guided and debated building Standard Guide for Identifying and Complying With Continuing Obligations was congratulated by the USEPA Office of Brownfield and Land Revitalization.  David Lloyd on behalf of the Brownfield Office and  the entire USEPA sent his congratulations in an August 1 letter to Terradex asking that this be […]

BNA Insider Reports on ASTM Guide Publication

The Bureau of National Affairs (BNA) within their Environmental Due Diligence Guide featured an Insider’s Perspective on the ASTM released guide for Continuing Obligations.  Terradex is grateful for BNA’s coverage of this guide and especially the attention provided by their reporter Mary Ann Grena Manley. This coverage by BNA builds the understanding of landowners as they […]

ASTM Publishes Continuing Obligations Guide

After years in the making and on the heels of two recent court decisions addressing “appropriate care,” ASTM published E2790-11, the “Standard Guide for Identifying and Complying With Continuing Obligations.”