9204_Sorrell_LFGMonitoring_DIN28160_20170705

S&ME, Inc. | 3201 Spring Forest Road | Raleigh, NC 27616 | p 919.872.2660 | f 919.876.3958 | www.smeinc.com
July 5, 2017
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 – June 20, 2017
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 June 20, 2017 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 June 20, 2017.
The June 2017 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. Measurements were collected
following Solid Waste Section guidelines and standard operating procedures previously established for Sorrell Landfill.
The methane concentrations recorded during the June 2017 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
T:\Projects\2007\ENV\07-251 Sorrell Landfill\LFG-Methane Monitoring\2017 June Methane\92-04_20170322 Sorrell June 2017 Methane.docx
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
12/07/16 0.0 0.0 0.0 0.0 26.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 10.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
03/10/17 0.0 0.0 0.0 0.0 39.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.9 0.0 23.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
06/20/17 0.0 0.0 0.0 0.0 40.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 8.5 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 - June 2017
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\2017 June Methane\2008_2017 Summary Table.xls
PROJECT NUMBER:
DATE:F
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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