In Situ Treatment Performance Monitoring: Issues and Best Practices

The U.S. EPA recently released an issue paper (EPA 542-F-18-002) that describes how in situ treatment technologies may impact sampling and analysis results.  The paper discusses the best practices to identify and mitigate issues that may affect sampling and analysis.

The utility of monitoring wells for performance or attainment monitoring is based on the premise that contaminant concentrations measured in the wells are representative of aquifer conditions. However, during in situ treatment, various biogeochemical and hydrogeological processes and sampling and analysis procedures may affect the representativeness of the monitoring well and sample quality, which may not be adequately considered in current remediation practice.

A properly designed monitoring network that anticipates the distribution of amendments after injection would minimize impacts to monitoring wells.  However, predicting amendment distribution prior to injection is challenging such that impacts to monitoring wells are likely.

The purpose of The U.S. EPA issue paper is to:
• describe how in situ treatment technologies may impact sampling and analysis results used to monitor treatment performance; and
• provide best practices to identify and mitigate issues that may affect sampling or analysis.

The U.S. EPA issue  paper discusses eight potential sampling or analytical issues associated with groundwater monitoring at sites where in situ treatment technologies are applied. These issues are grouped under three topic areas:
• Issues related to monitoring wells (Section 2).
• Representativeness of monitoring wells (Section 3).
• Post-sampling artifacts (Section 4).

The paper presents issues that pertain to collecting water samples directly from a monitoring well and does not discuss the use of other sampling techniques, such as passive diffusion bags or direct push groundwater sampling.

Pario Engineering & Environmental Sciences LP Opens Moncton Office

Pario Engineering & Environmental Sciences LP, a provider of specialized engineering and environmental services to the insurance and risk management industries, recently announced it has opened a new branch in Moncton, New Brunswick. It also announced that Steven Vidito has joined Pario as its Senior Geoscientist for Environmental Services, and will work out of the new Moncton location.

Aerial View of Downtown Moncton, New Brunswick

Mr. Vidito has over 25 years of experience and demonstrated success in the planning and execution of complex hydrogeological and environmental programs throughout Canada. He has extensive experience in contaminant hydrogeology, contaminated site assessment, soil and groundwater remediation, and regulatory compliance. He has coordinated and managed numerous environmental projects for a broad range of sites including residential, commercial, and industrial properties as well as federal facilities across Canada.

Additionally, Mr. Vidito has experience in providing senior technical oversight and peer review for reports and regulatory applications. His familiarity with the insurance industry will be a major asset in providing exceptional service to our clients. In the field, Mr. Vidito’s experience extends to on-site investigation, remediation, treat in-situ, treat ex-situ, containment procedures, risk evaluation, cost benefit analysis, and the execution of complex remedial projects.

Pario identified New Brunswick as a key location for those clients seeking environmental and forensic expertise. This location, along with the company’s current Halifax location, will serve Atlantic Canada, and many of Pario’s insurance and claims clients will now have local support to manage and control the costs of spill response along with mitigation of environmental liabilities.

Mr. Vidito will report to Brian Merrick, Director of Atlantic Canada. Mr. Merrick has been with Pario since 2007. He has over 22 years of experience, including senior technical and project management positions throughout Atlantic Canada.

“We are extremely pleased to be operating out of New Brunswick and to welcome Steven Vidito to the Pario team,” stated Martin Grech, Senior Vice President of National Operations. “As with all of our other locations, this new branch offers top talent with a continual emphasis on customer service. Mr. Vidito’s experience will be an ideal addition to our roster and we look forward to providing additional services to complement these strengths.”

Stantec acquires Quebec-based Cegertec

Stantec, a Canadian-headquartered international engineering and consultancy group, recently acquired acquired the Quebec-based consultancy Cegertec for an undisclosed amount. It comes within weeks of Stantec announcing the acquisitions of Calgary-based mining consultancy Norwest and UK specialist hydrogeological consultancy ESI.

Chicoutimi, Quebec

 

This latest target is a 250-person company providing engineering services to industrial, aluminium, mining, power and government clients across Canada and the United States. The firm operates from its headquarters in Chicoutimi but also boasts offices in Quebec City and Montreal with another due to open at St Georges in coming months.

 

In a press release, Stantec’s senior vice president for Quebec Isabelle Jodoin stated: “The acquisition of Cegertec is a sign of our continuing commitment to grow our expertise and diversify our operations in the Quebec market.  Our clients will now have access to a larger, comprehensive pool of resources, and a wide array of expertise and services under one banner, thanks to a combined team of 1,500 employees in Quebec.”

The acquisition is expected to close on the 25 May 2018.

Cegertec had previously explored partnership opportunities with other consultancies with its Saguenéenne engineering unit tied to WorleyParsons in a joint venture formed in 2012 to target mining, metals and oil and gas sectors. However, Cegertec bought out WorleyParsons’ stake in the JV last year returning decision making to its own management board.