3406_PiedmontLandfill_LFG_Q3Rpt_20150922

2211 West Meadowview Rd.
Greensboro, NC 27407

tel: [phone]
fax: [phone]

www.JoyceEngineering.com

September 22, 2015

Mr. Al Lacsamana, P.E.
Waste Management of the Carolinas, Inc.
District Manager – Closed Sites
1000 Parkwood Circle, Suite 700
Atlanta, GA 30339

RE: 2015 THIRD QUARTER LANDFILL GAS MONITORING
PIEDMONT LANDFILL & RECYCLING CENTER
JOYCE PROJECT NO. 392.1401.12, TASK 02

Dear Al:

Attached to this letter is the landfill gas migration monitoring results for the Third
Quarterly monitoring Event of 2015 at the Piedmont Landfill in Kernersville, North Carolina.
Ten permanent gas probes, eighteen bar-hole probes, and one on-site structure were first
monitored on August 25, 2015. Gas Probe GP-10 was exempted from the compliance
monitoring network in a letter from North Carolina Department of Environment and Natural
Resources (DENR) – Solid Waste Section dated January 21, 2014. There was no exceedence of
the LEL in the compliance network or on-site structure. The results are presented on the NC
DENR format Landfill Gas Monitoring Data Form dated August 25, 2015; however JOYCE was
unable to fully access the WM Landfill Gas Management System (LGMS) on that date to upload
the results. Therefore a second Landfill Gas Monitoring Data Form is attached that corresponds
to readings taken on September 17, 2015, using the Piedmont’s LGMS IDs. The LFG monitoring
results were uploaded to the LGMS on September 17th. The August results are included, as a
precaution, in case the earlier August date was required for any reason to maintain compliance.
The September 17, 2015, results are included as the Third Quarterly Monitoring Event results,
and were data logged with LGMS IDs. NC DENR notification is not required at this time based
on no detections of methane and no exceedences of the Lower Explosive Limit (LEL) in the
compliance monitoring locations during the event.

After reviewing the Historical Report generated by LGMS for September 17th, some
errors were noted that could affect the project’s status on the LGMS. I have attached the
Historical Report from the LGMS with highlights and comments in the far right column
regarding corrections or deletions that should be made by a WM LGMS user with authorization
to make manual updates on LGMS. Making the corrections will ensure that all monitoring
locations will show that they have in fact been monitored on the LGMS Historical Report.

A copy of this report should be kept on file for the facility. If you require anything else
please let me know [phone], or contact Mousa Maimoun at (704)-837-2005.

Mr. Lacsamana
September 22, 2015
Page 2 of 2

Sincerely,
JOYCE ENGINEERING

Daniel Girdner
Staff Consultant

Enclosure: NC DENR LFG Monitoring Data Form – August 25, 2015
NC DENR LFG Monitoring Data Form – September 17, 2015
LGMS Historical Report with Corrections

Cc: Mike Quedens – WM (email only)