Town Council Work Session

meeting
Leesburg Town Council 2h 16m 6 speakers 8 agenda items transcribed 1 day ago official recording ↗
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What was the purpose and agenda of the Town Council work session?

Unknown 0:00
Mm-hmm.
Unknown 1:40
Yeah. Oh
Kelly Burk 2:09
Call tonight to order tonight uh tonight's meeting of the October twenty third, twenty twenty three um work session. Our first item for discussion tonight is delivery lot site remediation.
Renee LaFollett 2:28
Good evening, Madam Mayor, members of the town council. My name's Renee LaFollett, Director of Public Works and Capital Projects, and tonight I have with me from WSP USA. Luke Clark and David Saar and Bruce Clendenon from Clendenon Consulting. So they will help me with the presentation and also are here for questions and answers. So just a quick reminder the Liberty Street parking lot is a two point oh three acre site. We have a hundred and six free public parking spaces there and that is a correction from the PowerPoint that you received that said a hundred and twenty. So there are eleven metered parking spaces. We do have our public work satellite facility there that's the sign and signal shop, a break room and storage for downtown equipment, signs, barricades and everything that we use for our special events in downtown.
Renee LaFollett 3:20
And it was the former town dump. So on the map bordered by Work Street, the town branch, Royal Street, and then the town houses. to the west. There's our site in nineteen fifty when it was an active dump. Is what it looks like today. And at your March twenty-eighth council meeting you authorized the contract with WSP USA to do a remediation investigation. And the scope of that work was to do ground penetrating radar and electromagnetic survey. We did some drilled shafts into the buried waste, soil bearings borings, and uh groundwater well installations. our final report that was attachment to the memo and then our cost estimate that was also An attachment to your memo. We will go through the results of that report and we will talk briefly about the cost estimation.
Renee LaFollett 4:24
So at this time I'm going to turn over the investigation findings to Luke Clark from WSP for him to walk through the findings.
Luke Clark 4:39
Thank you. Alright, so as Renee said, WSP was brought in to do an investigation at the subject site and the first phase that we did was the G PR survey. And that was back in April and the GPR survey did determine that The site is primarily underlain by waste material and if you look at the figure up here, um the blue material is generally Trash and non metallic debris. The red is generally non metallic, metallic debris. General refuse as well as um potential ash in the landfill. Uh following our GPR survey we did remobilize back to the site and we performed a drilled shaft survey. We used a one foot diameter auger to install eight boreholes. Down approximately thirty three feet deep. During this investigation we
Luke Clark 5:37
collected twenty seven soil samples for laboratory analysis. Um then following that in June we came back to the site, used a geo probe, which is a direct push probe to install five additional borings in which we did install four groundwater monitoring wells to collect groundwater samples from. Based upon the laboratory results that we collected and the sample and groundwater that we collected, um, we did compare these soil samples. to the what are called the Va Virginia Voluntary Remediation Program, the VRP Soil Screening Levels. And we compared the groundwater samples also to the respective VRP groundwater screening levels. And in general, um both soil and groundwater, there are multiple compounds that did exceed their respective VRP screening levels.
Luke Clark 6:40
As far as the soil is concerned, uh we analyzed the soil samples, um the twenty seven that were collected during the drilled shafts and the eleven that were collected during the soil borings. They were analyzed for volatile organic compounds. Semi volatile organic compounds, metals, PCBs, pesticides and herbicides. The results of all thirty eight samples came back as follows. Um generally we found volatile organic compounds. uh primarily naphthalene and trimethyl benzene that were exceeding their respective VRP screening levels. Uh we found semi volatile organic compounds, uh primarily naphthalene as well as benzoapyrene.

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