WA-706_10000_M_RP_20191010

From:William Regenthal
To:Ward, Allison
Cc:Hunneke, Sylvia
Subject:[External] Peele"s Service Station - UST Incident #10000
Date:Thursday, October 10, 2019 10:18:07 AM
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Allison/Sylvia,
I have completed the letter report for Peele’s, and it is going to go out today. Concentrations in
MW-2R and MW-11 continue to hover around where they have been historically. I think the next
event should be a more comprehensive sampling event with 5 or more wells. That event will allow
me to calculate the contaminant mass trends for the site. Additionally, a Mann-Kendall plume
stability analysis should be considered in order to see if the plume is stable. From the naked eye, it
looks that way. I know there are a ton of potable wells out there. I believe the last receptor survey
was done sometime around 2014. Might be a good idea to update that, as well.

We have tried BioSocks out there, and they seem to have had very little effect. The concentrations
in the wells don’t warrant a very aggressive approach, but I think we might want to put our heads
together and see what other options we may have out here. ORC might be an option.

Let me know what you think when you see the report. No rush.

William Regenthal, P. G.
Branch Operations Manager - Winterville
Geological Resources, Inc.
113 W. Firetower Road, Suite G., Winterville, NC 28590
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