9204_Sorrell_LFGMonitoring_DIN26738_20160912

S&ME, Inc. | 3201 Spring Forest Road | Raleigh, NC 27616 | p 919.872.2660 | f 919.876.3958 | www.smeinc.com
September 13, 2016
Solid Waste Section
NCDENR - Division of Waste Management
217 West Jones Street
Raleigh, North Carolina 27603
Attention:Ms. Jaclynne Drummond via email:[e-mail]
Reference:Methane Monitoring – September 9, 2016
Sorrell Landfill (Permit No. 92-04)
8000 Smith Road, Apex, North Carolina
S&ME Project No. 1054-07-251
Dear Ms. Drummond:
On behalf of Sorrell Grading Company (Sorrell), S&ME, Inc. (S&ME) is submitting methane gas monitoring data collected
on September 12, 2016 at the closed Sorrell Landfill located in Apex, North Carolina. The attached table summarizes the
methane readings collected at the Sorrell Landfill from January 2008 through September 2016.
The September 12, 2016 measurements were collected by S&ME personnel in the on-site permanent methane monitoring
wells (probes); in on-site groundwater monitoring wells; in off-site groundwater assessment wells; and from beneath two
off-site residential structures located at 5100 and 5101 Herndon Lane depicted on Figure 1. During the September 12,
2016 methane monitoring event, S&ME personnel knocked on the doors of the residences at 5100 and 5101 Herndon Lane
(Herndon and Dye residences) to inquire about the status of the indoor methane detectors/alarms that were installed in the
residences in October 2010. No one answered the door at either of the residences.
Measurements were collected following Solid Waste Section guidelines and standard operating procedures previously
established for Sorrell Landfill. The methane concentrations recorded during the September 2016 monitoring event
exceeded the operational limits, established for gas control at municipal solid waste landfills by North Carolina Solid Waste
Rules [15A NCAC 13B .1626(4)(a)], i.e. methane concentrations were greater than the lower explosive limit (LEL) for methane
(5% CH4), at one or more sampling locations.
Please call me at [phone] if you have any questions regarding this information.
Sincerely,
S&ME, Inc.
Samuel P. Watts, P.G.
Senior Project Manager
Enclosures:NC DENR – Environmental Monitoring Reporting Form
Table 1 – Percent Methane Gas Levels for the Sorrell Landfill
Figure 1 – Site Map with Methane Monitoring Locations
cc: Mr. James R. Easthom – Kennon, Craver, Belo, Craig & McKee, PLLC
Mr. Eddie Sorrell – Sorrell Grading Company
DATE
5100
Herndon
Lane
5101
Herndon
Lane
MMW-2 MMW-3 MMW-4 MMW-5 MMW-6 MW-1R MW-4 MW-5 MW-6 MW-7 MW-8 MW-9* DW-1 GP-7+GP-7D GP-8 GP-9 GP-10 GP-10D GP-11 GP-12 GP-12D GP-13 GP-13D GP-14 GP-15 GP-16
1/11/08 NM NM 4.3 0.5 0.1 5.7 0.1 0.1 0.0 0.0 0.1 0.1 0.0 0.0 0.0 --------------
2/11/08 NM NM 0.6 1.1 0.0 24.0 0.0 0.2 0.2 0.0 0.0 0.2 0.2 0.0 0.2 --------------
3/13/08 NM NM 0.5 0.6 0.3 0.2 0.2 0.6 0.7 0.2 0.1 0.7 0.3 0.0 0.6 --------------
4/8/08 NM NM 15.5 0.0 0.9 10.6 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 --------------
5/11/08 NM NM 0.0 0.2 3.0 1.9 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 --------------
6/9/08 NM NM 8.0 0.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 --------------
7/8/08 NM NM 0.1 0.0 18.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 --------------
8/11/08 NM NM 0.0 0.0 17.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 --------------
9/9/08 NM NM 15.3 0.0 23.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 0.0 --------------
10/15/08 NM NM 16.5 4.5 76.8 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 --------------
11/11/08 NM NM 4.4 0.0 28.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 --------------
12/16/08 0.0 0.0 0.0 0.0 8.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.2 -11.7 0.0 50.7 -0.0 --0.0 --0.0 0.0
1/13/09 0.0 0.0 0.0 0.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 3.2 0.0 6.7 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
2/12/09 0.0 0.0 0.0 1.6 2.2 3.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.3 0.0 9.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
3/12/09 0.0 0.0 0.0 0.0 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
4/2/09 0.1 0.0 24.8 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 0.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
5/8/09 0.0 0.0 0.1 0.0 4.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 5.6 0.0 16.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
6/11/09 0.1 0.1#9.4 0.0 9.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.0 0.1 0.1 7.3 0.1 10.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.0
07/17/09 0.1 0.3#17.9 0.2 28.4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.3 0.1 0.1 0.1 0.1 5.9 0.1 46.9 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 7.9
01/08/10 0.0 0.0 0.0 0.6 46.8 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 0.0 8.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
04/09/10 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.2 0.2 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
07/07/10 0.1 0.1 0.0 0.0 10.5 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.0 0.1 0.1 0.3 6.4 0.1 6.2 1.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.2
12/02/10 0.0 0.0 0.0 0.0 16.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 0.0 5.8 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
02/09/12 0.0 0.0 4.2 5.3 2.1 14.0 0.0 0.0 0.0 0.0 0.0 0.0 8.6 0.0 0.0 0.0 0.0 3.8 0.0 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
09/05/12 0.0 0.0 0.0 0.0 58.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.1 0.0 0.0 0.0 0.0 1.1 0.0 5.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
12/17/12 0.0 0.0 0.3 0.4 39.2 1.1 0.0 0.0 0.0 0.0 0.0 0.1 15.4 0.0 0.2 0.0 0.0 13.4 0.0 12.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
02/25/13 0.0 0.0 0.0 2.5 18.4 6.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 0.0 10.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3
05/10/13 0.0 0.0 0.0 1.2 17.0 7.8 0.2 0.0 0.0 0.1 0.0 0.0 13.4 0.0 0.0 0.0 0.0 4.0 0.1 12.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1
08/29/13 0.0 0.0 0.0 0.0 27.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 2.5 0.0 0.0 0.0 0.0 1.3 0.0 4.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
10/17/13 0.0 0.0 0.0 0.0 16.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 2.9 0.0 2.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2
02/25/14 0.0 0.0 8.3 1.2 14.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.7 0.0 0.0 0.0 0.0 1.5 0.0 9.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
05/27/14 0.0 0.0 2.3 0.0 32.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.8 0.0 0.0 0.0 0.0 1.8 0.0 20.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
09/16/14 0.0 0.0 0.0 0.0 16.8 4.1 0.0 0.0 0.0 0.0 0.0 0.0 3.8 0.0 0.0 0.0 0.0 2.9 0.0 4.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
01/21/15 0.0 0.0 0.5 0.0 37.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 0.0 0.0 0.0 0.0 13.8 0.0 26.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
07/27/15 0.0 0.0 0.0 0.0 25.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 3.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
10/07/15 0.0 0.0 0.0 0.0 54.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
11/30/15 0.0 0.0 0.0 0.0 31.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.1 0.0 8.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
03/30/16 0.0 0.0 0.0 0.0 27.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.2 0.0 12.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
06/30/16 0.0 0.0 0.0 0.0 19.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
09/12/16 0.0 0.0 0.0 0.0 27.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.3 0.0 10.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Notes:* = Monitor Well MW-9 was installed on 9/18/2007 as a replacement monitoring well for MW-7.
+ = Monitor wells GP-7 through GP-16 were installed in September 2008
NM = Not Measured
Shaded and bolded cells indicate methane concentration exceeding the lower explosive limit (>5% Methane).
Adjacent properties were not monitored prior to detections at off-site wells.
S&ME Project No. 1054-07-251
January 2008 - September 2016
Permanent Methane Monitoring Wells & Off-Site Structures
Percent Methane (% CH4)
On-site Groundwater Monitoring Wells Off-site Groundwater Monitoring Wells
Percent (%) Methane Gas Levels
Table 1
Sorrell Landfill, Apex, NC
T:\Projects\2007\ENV\07-251 Sorrell Landfill\LFG-Methane Monitoring\2016 September Methane\2008_2016 Summary.xls
PROJECT NUMBER:
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SCALE:
DRAWN BY:
CHECKED BY:DRAWING NUMBER:WWW.SMEINC.COM
3201 SPRING FOREST RD, RALEIGH, NC 27616
NC ENGINEER LICENSE #F-0176
1
BTR1054-07-251
DEC. 20121" = 200'
SORRELL LANDFILL
APEX, NORTH CAROLINA
SITE MAP
B-2054
S:\PROJECTS\2007\07-251 Sorrell Landfill\CAD\B2054.dwg, FIG1, 12/18/2012 2:02:06 PM, 1:1