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What’s the minimal geochem data I can collect and still have something reasonable on which to make decisions?

Well, I would say that, if you’re just starting out, perhaps you’re a little low on budget, you know, at least collect nitrate, total and dissolved iron, sulfate, methane, and, you know, if you still have a little money left, carbon dioxide, and or alkalinity. I think that’s a good start for a petroleum site. For chlorinated site, I’d probably lump on to that total organic carbon and perhaps chloride, just as a starter, and you can build on it from there.

Can you give an example of how an injection subcontractor did not understand the local soil and will add up the products being injected, and how that proved to be a problem on the site?

I think that’s very important. Well, I’ve seen that in a couple different ways. First of all, I’ve seen contractors that perhaps were not as accustomed to working would show up on site, with the wrong direct push equipments, something that’s not gonna be robust enough for the geology that we’re working under, and subsequently waste a whole lot of time trying to push through and get fluid into the subsurface. So that’s one way it can be a problem.

The other one is a lack of understanding of the chemistry, and the real ways to finesse the pressure, and the flows, too much is too much. And too much of a hurry usually results in bad results, a bad outcome on sites. So I think that’s another way that I’ve seen that manifest itself, where you’ve got a contractor who doesn’t necessarily know the chemistry, and starts to go too fast, and the next thing you know, you’ve got product pushed into monitoring wells, or daylighting at 10 different locations, and really creating a problem.

Video Transcription

Dane: Hello, and welcome, everyone. My name is Dan Menke. I am the Digital Marketing Manager here at Regenesis and Land Science. Before we get started with the webinar today, I have just a couple of administrative items to cover.

Since we’re trying to limit our time to an hour, today’s presentation will be conducted with the audience audio settings on mute. This will minimize unwanted background noise from the large number of participants joining us today. If you have a question, we encourage you to ask it using the question feature located on the webinar panel. We’ll collect your questions and do our best to answer them at the end of the presentation. If we do not address your question, we’ll make an effort to follow up with you after the webinar. We’re recording this webinar and a link to the recording will be emailed to you once it is available.

In order to continue to sponsor events that are of value and worthy of your time, we’ll be sending out a brief survey following the webinar to get your feedback.

Today’s webinar will focus on Best Practices for Safe and Effective In-situ Remediation. With that, I’d like to introduce our presenter for today.

We are pleased to have with us Mr. Jack Sheldon, Senior Remediation Specialist at Antea Group. Mr. Sheldon is a remediation expert with over 35 years of industry experience. He has specialized in the field application of various types of bioremediation and chemical oxidation and reduction systems, with personal involvement in 22 first type remediation projects in their respective states. He has completed remediation projects in all 50 states, and several locations abroad.

All right. That concludes our introduction. So, now, I will hand things over to Jack Sheldon to get us started.