9502_WataugaCoMSW_April2018_LFGResults_FID1088647_20180404

1
Werner, Elizabeth
From:Don Marickovich <[e-mail]>
Sent:Wednesday, April 04, 2018 5:20 PM
To:Werner, Elizabeth
Cc:[e-mail]; Karen Weber; Dale Slaughter
Subject:[External] EMO - 18 0404 - Werner (NCDEQ) - Watauga County Landfill - April 2018 Monthly Gas
Monitoring Event - Notification of an Out of Compliance Probe
Attachments:XLS - 18 0404 - Watauga County Methanes Since 2011.pdf
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Hi Elizabeth, 

On March 30th, I informed you that we found methane in probe 2 at levels above the 5% compliance level during our 1st 
quarter gas monitoring event on March 29th. 

Today, our field technicians were on‐site for other purposes and they monitored probe 2; which we are considering our 
April monthly monitoring event of the probe. 

Attached is a table that presents the methane concentrations in probes 1 and 2 since 2011, including probe 2 
today.  During this event, the concentrations in % by volume in probe 2were, from shallowest to deepest, 0.0, 2.9, 6.8, 
and 17.9. 

As the table shows, the methane levels in probe 2 have decreased substantially since the March 29th event.  This is due 
to the effective operation of the active gas collection system.  However the probe is still out of compliance and monthly 
monitoring will continue until the probe is in compliance for three consecutive months. 

Regards, 

Don 

Don Marickovich, P.E.
Senior Design Engineer

Draper Aden Associates
Engineering • Surveying • Environmental Services Lasting Positive Impact™

Phone: [phone] • Direct Line: 540.557.1372 • Mobile [phone]

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P:\06\500\06520\06520-27\Gas Field Data\Spreadsheets\WATCO.XLS
Table 2
WATAUGA COUNTY LANDFILL
Steady State Methane Concentrations (%vol)
Probe Depth Methane Concentrations (in % by Volume)
(ft.)
1/17/2011 4/5/2011 5/5/2011 6/7/2011 7/5/2011 11/7/2011 1/11/2012 5/1/2012 7/6/2012 12/5/2012 1/9/2013 4/18/2013 7/10/2013 11/12/2013
1R 0 - 5 0 0 NR NR 0 0 0 0 0 0 0 0 0 0
1Y 5 - 10 0 0 NR NR 0 0 0 0 0 0 0 0 0 0
1B 10 - 20 0 0 NR NR 0 0 0 0 0 0 0 0 0 0
1G 20 - 40 0 0 NR NR 0 0 0 0 0 0 0 0 0 0
2R 0 - 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2Y 5 - 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2B 10 - 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2G 20 - 40 0 6.5 0 0 0 0 0 0 0 0 0 0 0 0
NM = Not monitored.
Table 2
WATAUGA COUNTY LANDFILL
Steady State Methane Concentrations (%vol)
Probe Depth Methane Concentrations (in % by Volume)
(ft.)
2/5/2014 5/1/2014 8/5/2014 11/4/2014 2/12/2015 5/26/2015 8/5/2015 11/4/2015 2/3/2016 4/6/2016 7/6/2016 11/10/2016 3/1/2017 6/27/2017
1R 0 - 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1Y 5 - 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1B 10 - 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1G 20 - 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2R 0 - 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2Y 5 - 10 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2B 10 - 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2G 20 - 40 0 0 0 0 0 0 0 0 0 0 0 0 0 0
LCID TP-1 0 - 7 0 0 0 0 0 0 0 0 0 0 0 0
NM = Not monitored.
Table 2 - Continued
WATAUGA COUNTY LANDFILL
Steady State Methane Concentrations (%vol)
Probe Depth Methane Concentrations (in % by Volume)
(ft.)
8/3/2017 10/4/2017 3/29/2018 4/4/2018
1R 0 - 5 0 0 0
1Y 5 - 10 0 0 0
1B 10 - 20 0 0 0
1G 20 - 40 0 0 0
2R 0 - 5 0 0 14.6 0
2Y 5 - 10 0 0 20.7 2.9
2B 10 - 20 0 0 27.8 6.8
2G 20 - 40 0 0 37.5 17.9
LCID TP-1 0 - 7 0 0 0
NM = Not monitored.