5502_LincolnCountyOwlsDen_GWMReport_DIN26397_20151009

October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
Prepared for:
Lincoln County
5291 Crouse Road
Crouse, North Carolina 28033
Prepared by:
S&ME, Inc.
9751 Southern Pine Boulevard
Charlotte, NC 28273
December 8, 2015
S&ME, Inc. | 9751 Southern Pine Boulevard | Charlotte, NC 28273 | p 704.523.4726 | f 704.525.3953 | www.smeinc.com
December 8, 2015
Lincoln County
5291 Crouse Road
Crouse, North Carolina 28033
Attention: Mr. Mark Bivins
Reference: October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
Dear Mr. Bivins:
S&ME Inc. (S&ME) has completed the October 2015 Semi-Annual Monitoring and Reporting for the Owl’s
Den Landfill. This report presents the results of the second monitoring event of the year for the facility.
S&ME appreciates the continued opportunity to provide services to you and Lincoln County. If you have
any questions or need additional information regarding this report, please contact us at [phone].
Sincerely,
S&ME, Inc.
Jasmine Tayouga, E.I. Julie P. Robertson, P.G.
Staff Professional Project Manager/Senior Geologist
NC Registration No. 1995
Cc: Jaclynne Drummond, NCDENR – Solid Waste Section
October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
December 8, 2015 ii
Table of Contents
1.0 Introduction ............................................................................................................ 1
2.0 Groundwater Levels and Flow............................................................................ 1
3.0 Analytical Data ...................................................................................................... 2
3.1 Monitoring Well Sampling .............................................................................................. 2
3.1.1.Volatile Organic Compounds (VOCs) ........................................................................... 2
3.1.2.Inorganic Constituents (Metals) ..................................................................................... 3
3.2.Surface Water Sampling .................................................................................................. 3
3.2.1.Volatile Organic Compounds (VOCs) ........................................................................... 3
3.2.2.Inorganic Constituents (Metals) ..................................................................................... 3
3.3.Private Supply Well Sampling ........................................................................................ 4
4.Methane Readings ................................................................................................. 4
Appendices
Appendix I – Drawings
Appendix II –Tables
Appendix III – Well Sampling Logs and Laboratory Reports
October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
December 8, 2015 1
1.0 Introduction
S&ME, Inc. (S&ME) was contracted by Lincoln County to provide groundwater, surface water, and water
supply well monitoring services at the Owl’s Den Landfill (the Site) located off Owl’s Den Road in
Lincolnton, North Carolina. This semi-annual monitoring event was conducted on October 8th and 9th,
2015.
This report presents the results of the second semi-annual sampling event for the year 2015 at the facility,
which included the sampling of one (1) background well (MW-1), ten (10) compliance wells (MW-2, MW-
4, MW-5, MW-6, MW-6A, MW-7, MW-7A, MW-8, MW-9, and MW-10), three (3) surface water locations
(SW-1, SW-2 and SW-3), and four (4) private supply wells (PSW-1, PSW-3, PSW-6, and PSW-16).
Surface water location SW-1 represents the background surface water sample for the Site.
Please note that compliance well MW-3 has been removed from the Site’s monitoring plan due to
expansion of the property boundary currently monitored by compliance wells MW-8 and MW-9.
Compliance monitoring well MW-3 remains on-site for water level measurement purposes.
Lincoln County personnel collect monthly landfill gas readings at seven (7) methane monitoring wells
(MMW-2, MMW-4, MMW-5, MMW-6, MMW-7, MMW-8, and MMW-9). Please note that methane
monitoring wells MMW-1 and MMW-3 have been removed from the Site’s monitoring plan. MMW-1 was
replaced with MMW-7, and MMW-3 was replaced with MMW-5 and MMW-6. This report includes the
results (both current and historical) of the Site’s landfill gas monitoring.
The next sampling event is scheduled for April 2016.
2.0 Groundwater Levels and Flow
The water table elevations and our interpretation of the groundwater surface expressed as a
potentiometric map along with groundwater flow direction are shown in Appendix I. Based upon the
groundwater elevations in the vicinity of the landfill, groundwater in this area is projected to flow north-
northwest toward the drainage features bordering the site on the west, north and east of the property.
Groundwater levels obtained during the October 2015 monitoring event, as well as monitoring well
construction data, are presented in Appendix II.
The hydraulic gradient (i) in the vicinity of each well was determined by calculating the vertical difference
between the groundwater elevation at each well and one or more nearby contour lines from the
Groundwater Elevation Map. This value was then divided by the distance measured from the well to the
selected groundwater elevation contour line. Groundwater velocity was calculated by multiplying the
gradient (i) by the hydraulic conductivity (k) and dividing by the estimated effective porosity (ne) of the
aquifer. Table 2 summarizes the groundwater flow velocities for the monitoring wells.
October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
December 8, 2015 2
3.0 Analytical Data
Analytical results for the landfill monitoring wells and surface water locations are summarized in Tables 4
and 5. Field measurements of pH, conductivity, and temperature are summarized in Table 3. Well
sampling logs containing field measurements of pH, conductivity, temperature, and water levels are
included in Appendix III. The monitoring wells, surface water locations, and private supply wells were
sampled for volatile organics by EPA Method 8260B and for RCRA metals.
3.1 Monitoring Well Sampling
3.1.1.Volatile Organic Compounds (VOCs)
No volatile organic compounds (VOCs) were detected in the background monitoring well, MW-1, or
monitoring wells MW-5 and MW-10.
Nine (9) VOCs were detected in monitoring well MW-2, none of which were detected at a level at or
above their respective NCAC 2L .0202 Groundwater Quality Standard (2L Standard) and/or respective
North Carolina Department of Environment and Natural Resources - Solid Waste Section - Groundwater
Protection Standard (SW GWP Standard).
Ten (10) VOCs were detected in monitoring well MW-4, three (3) of which were detected at levels at or
above their respective 2L Standard and/or respective SW GWP Standard (1,2-Dichloroethane, 1,4-
Dichlorobenzene, and Benzene).
Five (5) VOCs were detected in monitoring well MW-6, none of which were detected at or above their
respective 2L Standard and/or respective SW GWP Standard.
Seven (7) VOCs were detected in monitoring well MW-6A, one (1) of which was detected at or above its
respective 2L Standard and/or respective SW GWP Standard (1,4-Dichlorobenzene).
Eight (8) VOCs were detected in monitoring well MW-7, none of which were detected at or above their
respective 2L Standard and/or respective SW GWP Standard.
Nine (9) VOCs were detected in monitoring well MW-7A, none of which were detected at or above their
respective 2L Standard and/or respective SW GWP Standard.
One (1) VOC was detected in monitoring well MW-8 and was below its respective 2L Standard and/or
respective SW GWP Standard.
One (1) VOC was detected in monitoring well MW-9 at a concentration at/or above its respective 2L
Standard and/or respective SW GWP Standard (Tetrachloroethene).
October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
December 8, 2015 3
3.1.2.Inorganic Constituents (Metals)
Barium was detected in all eleven monitoring wells, including the background monitoring well MW-1.
Barium was detected at concentrations of 784 and 724 micrograms per liter (µg/L) in monitoring wells
MW-6A and MW-7A, respectively, which is above its 2L Standard of 700 µg/L.
Cadmium was detected in monitoring wells MW-2, MW-6, MW-7A, and MW-8. Cadmium was detected
above its 2L Standard of 2 µg/L in monitoring wells MW-2 and MW-7A at concentrations of 2.13 and 3.00
µg/L, respectively.
Chromium was detected in monitoring wells MW-2, MW-6, MW-7A, and MW-10. Chromium was
detected above its 2L Standard of 10 µg/L in monitoring well MW-7A at a concentration of 10.5 µg/L.
Mercury was detected in monitoring well MW-9 at a concentration of 5.18 µg/L, which is above its 2L
Standard of 1 µg/L.
Silver was detected in monitoring wells MW-2, MW-4, MW-6, MW-6A and MW-7A at concentrations
ranging from 2.22 J to 4.39 J µg/L, which is below its 2L Standard of 20 µg/L.
Please note that the concentrations of metals in the monitoring wells fluctuate with time and may be due
to suspended solids rather than actual dissolved metals.
No other metals were detected in the monitoring wells.
3.2.Surface Water Sampling
3.2.1.Volatile Organic Compounds (VOCs)
The volatile organic compound 1,4-Dichloroethane was detected at surface water sampling location SW-3
at a concentration of 1.2 µg/L. The NCAC 2B Freshwater Standard for 1,4-Dichoroethane is 100 µg/L.
The volatile organic compound cis-1,2-Dichloroethene was detected at surface water sampling location
SW-2 at a concentration of 0.62 J μg/L. The NCAC 2B Freshwater Standard for cis-1,2-Dichloroethene is
4,900 µg/L.
The volatile organic compound Chlorobenzene was detected at surface water sampling location SW-3 at a
concentration of 0.70 J µg/L. The NCAC 2B Freshwater Standard for Chlorobenzene is 140 µg/L.
3.2.2.Inorganic Constituents (Metals)
Barium was detected at surface water sampling locations SW-1, SW-2 and SW-3 at concentrations of 221,
226, and 321 μg/L, respectively. The NCAC 2B Freshwater Standard established for Barium is 200,000
μg/L.
Chromium was detected at surface water sampling location SW-1 at a concentration of 4.12 J μg/L. The
NCAC 2B Freshwater Standard for Chromium is 50 μg/L.
October 2015 Semi-Annual Monitoring Report
Owl’s Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
December 8, 2015 4
No other metals were detected in the surface water samples.
3.3.Private Supply Well Sampling
During the October 2015 sampling event, four (4) private water supply wells (PSW-1, PSW-3, PSW-6, and
PSW-16) located on properties adjacent to the landfill, were sampled for EPA method 8260B volatile
organics and RCRA metals. The locations of the four (4) private well locations are shown on the attached
Figure 1. Laboratory analytical results for the private supply wells are summarized in Table 6 and also
included in Appendix III.
No volatile organic compounds were detected in any of the private supply wells sampled during the
October 2015 monitoring event.
Each of the four (4) private supply wells had detections of barium ranging from 42.3 to 111 µg/L. The 2L
Standard for Barium is 700 µg/L.
No other metals were detected in the private supply wells during the October 2015 sampling event.
4.Methane Readings
Methane readings from the seven (7) methane monitoring wells on site (MMW-2, MMW-4, MMW-5,
MMW-6, MMW-7, MMW-8, and MMW-9) are measured monthly by Lincoln County personnel using a
GEM 2000 gas meter. Table 7 and its corresponding charts summarize the current and historical data
collected.
Appendices
Appendix I - Drawings
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MW-9
MMW-9
MMW-8MW-10
MMW-7
MMW-5
MMW-6
SW-3MW-5
SW-2
SW-1
MW-3
MW-4
MW-1
MW-2
MMW-4
MMW-2
MMW-3 MMW-1
MW-7/7A
MW-6/6A
PSW-1
PSW-3
PSW-6
PSW-16
815
810
805
820
795
825
830
800
Source: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community
G R O U N D W A T E R E L E V A T I O N M A P
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O W L S D E N L A N D F I L L
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1
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FIGURE NO.
S C A L E :
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W W W .S M E I N C .C O M
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0 300 600150Feet
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PARCEL AND TOPOGRAPHIC GIS DATA AND 2014 AERIAL PHOTOGRAPHY WERE OBTAINED FROM THE WORLD IMAGERY ESRI MAPPING SERVICE. EXISTING AND PROPOSED WELL LOCATIONS, SURFACE WATER SAMPLE LOCATIONS, GROUND WATER SURFACE DATA, AND SURFACE WATER FEATURES WERE GENERATED BY S&ME, INC. PLEASE NOTE THIS DATA IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FOR DESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANY DECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON INFORMATION OBTAINED FROM THE ABOVE DATA.
REFERENCE:
Q :\1 3 5 6 \L I N C O L N C O U N T Y \O w l 's D e n \G W E l e v a t i o n s a n d G I S \O w l s D e n G r o u n d w a t e r E l e v a t i o n O c t o b e r 2 0 1 5 1 1 x 1 7 .m x d
GROUNDWATER SURFACE ELEVATION (FT-MSL)
Legend
GROUNDWATER SURFACE (10/2015)
PROPERTY BOUNDARYExisting Wells
(#GROUNDWATER MONITORING WELLS
#AMETHANE MONITORING WELLS
kj SURFACE WATER SAMPLING LOCATION
SURFACE WATER FEATURES
PARCEL BOUNDARIES
PRIVATE SUPPLY WELLS
GROUNDWATER SURFACE ELEVATION (FT-MSL)828.43
!W
Appendix II - Tables
Latitude Longitude Ground TOC DTW - TOC GW ELEV
(MM/DD/YY)(ft)(ft - MSL)
MW-1 09/28/00 35.4845710°-081.3075490°863.20 865.69 0.0 to 30.0 30.0 to 45.0 0.0 to 26.0 26.0 to 28.0 Bentonite 28.0 to 45.0 SAP 37.26 828.43
MW-2 10/03/00 35.4874879°-081.3094713°822.50 824.96 0.0 to 23.0 23.0 to 38.0 0.0 to 19.0 19.0 to 21.0 Bentonite 21.0 to 38.0 PWR 23.40 801.56
MW-3 09/26/00 35.4846148°-081.3089804°870.20 872.60 0.0 to 33.0 33.0 to 48.0 0.0 to 28.5 28.5 to 30.5 Bentonite 30.5 to 48.0 PWR 42.51 830.09
MW-4 10/02/00 35.4874987°-081.3125120°831.80 833.90 0.0 to 40.0 40.0 to 55.0 0.0 to 36.0 36.0 to 38.0 Bentonite 38.0 to 55.0 PWR 40.96 792.94
MW-5 08/05/01 35.4857775°-081.3140465°835.90 839.10 0.0 to 15.0 15.0 to 30.0 0.0 to 10.5 10.5 to 13.0 Bentonite 13.0 to 30.0 SAP 27.72 811.38
MW-6 07/24/01 35.4877917°-081.3128338°805.44 808.55 0.0 to 6.0 6.0 to 21.0 0.0 to 3.0 3.0 to 5.0 Bentonite 5.0 to 21.0 PWR 16.91 791.64
MW-6A*07/18/01 35.4877917°-081.3128338°805.17 808.61 0.0 to 44.5 45.0 to 55.0 0.0 to 41.5 41.5 to 45.0
Bentonite
and K-Packer ROCK 18.60 790.01
MW-7 07/24/01 35.4876205°-081.3095665°815.47 818.44 0.0 to 10.0 10.0 to 25.0 0.0 to 6.0 6.0 to 8.0 Bentonite 8.0 to 25.0 PWR 22.00 796.44
MW-7A**07/24/01 35.4876205°-081.3095665°814.68 817.48 0.0 to 41.0 41.5 to 51.5 0.0 to 39.0 39.0 to 41.5
Bentonite
and K-Packer ROCK 25.85 791.63
MW-8 07/14/08 35.4843606°-081.3094687°878.23 881.21 3.0 to 39.0 39.0 to 54.0 0.0 to 34.5 34.5 to 36.5 Bentonite 36.5 to 54.0 SAP 49.21 832.00
MW-9 07/08/08 35.4841556°-081.3084430°882.19 884.94 2.8 to 45.0 45.0 to 60.0 0.0 to 36.0 36.0 to 39.5 Bentonite 39.5 to 60.0 SAP 51.95 832.99
MW-10 07/10/08 35.4853675°-081.3073758°864.33 867.11 2.8 to 33.0 33.0 to 48.0 0.0 to 29.0 29.0 to 31.3 Bentonite 31.3 to 48.0 SAP 44.26 822.85
Notes:
(ft-MSL)Feet Mean Sea Level
(ft-bls)Feet Below Land Surface
TOC Top of Casing
Ground Ground Surface
DRY No water in well at time of sampling
NS Well was not sampled
N/A Not Applicable
DTW Depth to Water
GW ELEV.Groundwater Elevation
#2 Filter Sand Medium to Fine Grained Silica Sand
Bentonite Bentonite Pellets
Sch. 40 Schedule 40 Pipe
0.010 Slot 0.010-Inch Machine-Slotted Pipe
Neat Cement Cement Mixture without Bentonite
SAP Saprolite
PWR Partially Weathered Rock
ROCK Bedrock
- - -Not Available
October 2015Geology in
Screen
Interval
Filter Pack
Interval
(ft-bls)
2-inch, SCH. 40, PVC
Screen Interval Grout Interval
2-inch, 0.010 Slot, PVC Neatr Cement
(decimal degrees)(ft-MSL)(ft-bls)
BentoniteInstall Date
GPS Coordinates Survey Elevations Casing Interval
(ft-bls)(ft-bls)
None
None
Table 1
Well Construction Summary and Water Level Data
Owl's Den Landfill
S&ME Project No: 1356-07-006
Well ID
Seal Interval
(ft-bls)
K n I v
Well Hydraulic Cond. Eff. Porosity Gradient Flow Velocity
ID (ft/day)(ne)(ft/ft)(ft/yr)
MW-1 4.3E+02 0.20 0.02 47
MW-2 2.6E+03 0.28 0.08 735
MW-3 9.8E+02 0.33 0.01 15
MW-4 1.3E+03 0.30 0.04 166
MW-5 6.2E+02 0.27 0.01 27
MW-6 4.2E+02 0.29 0.02 25
MW-7 2.1E+02 0.30 0.02 16
MW-8 5.6E+02 0.28 0.02 47
MW-9 1.3E+03 0.31 0.02 80
MW-10 9.5E+02 0.31 0.09 275
Notes:
(1) Hydraulic Conductivity was calculated from slug tests performed after well construction.
(2) Effective porosity was estimated from soils collected within the saturated portion of screen
interval during well construction.
(3) Hydraulic gradient calculated by measuring linear feet between selected contour intervals.
(4) Seepage velocity v = (K*i)/ne
- - -Not Available
Table 2
Groundwater Flow Data
Owl's Den Landfill
S&ME Project No: 1356-07-006
October 2015
Well ID DTW TOC
(ft-bls)pH Temp (°C)Conductance
(μS)
MW-1 37.26 5.37 16.4 28
MW-2 23.40 6.64 17.1 558
MW-3 42.51
MW-4 40.96 6.88 17.3 1447
MW-5 27.72 6.15 14.7 66
MW-6 16.91 6.76 15.9 832
MW-6A 18.60 7.19 15.8 877
MW-7 22.00 7.11 17.0 411
MW-7A 25.85 6.46 17.3 606
MW-8 49.21 5.68 14.5 48
MW-9 51.95 6.13 16.8 122
MW-10 44.26 5.88 16.2 30
Notes:
°C degrees celcius
μS micro siemems
Table 3
October 2015 - Field Parameters in Monitoring Wells
Lincoln County Owl's Den Landfill
S&ME Project No. 1356-07-006
NOT RECORDED
EPA Volatile Organic
Compounds Method
8260B (ug/L)
NCDENR
SWSL
15A
NCAC
2L
Soild
Waste
GWP ST
MW-1 MW-2 MW-3 MW-4 MW-5 MW-6
MW-
6A MW-7 MW-
7A MW-8 MW-9 MW-10
1,1- Dichloroethane 5 6 NE 0.41 J 1.1 1.6 0.57 J 1.2
1,2-Dichlorobenzene 5 20 NE 0.60 J 4.3 1.1 3.0 0.42 J 0.60 J
1,2-Dichloroethane 1 0.4 NE 0.83 J
1,2-Dichloropropane 1 0.6 NE 0.42 J 0.41 J 0.43 J
1,3-Dichlorobenzene 5 200 NE 0.46 J 1.1 0.46 J
1,4-Dichlorobenzene 1 6 NE 5.4 14 5.9 10 4.4 5.4
2-Chlorotoluene NE 100 NE 0.91 J 1.2 0.84 J 1.4
Acetone 100 6000 NE 7.2
Benzene 1 1 NE 0.71 1.4 0.93 J 0.50 J 0.44 J 0.55 J
Chlorobenzene 3 50 NE 3.7 13 16 14 3.2 5
Chloroethane 10 3,000 NE 2.7 0.94 J
cis-1,2-Dichloroethene 5 70 NE 0.62 J 2.0 1.4
Methyl-tert-Butyl Ether NE 20 NE 0.41 J 0.86 J
Tetrachloroethene 1 0.7 NE 0.88 J
Trichloroethene 1 3 NE 0.78 J
EPA RCRA Metals Method
6010B (ug/L)
NCDENR
SWSL
15A
NCAC
2L
Soild
Waste
GWP ST
MW-1 MW-2 MW-3 MW-4 MW-5 MW-6
MW-
6A MW-7 MW-
7A MW-8 MW-9 MW-10
Barium 100 700 NE 138 579 656 69.6 288 784 398 724 192 245 101
Cadmium 1 2 NE 3.00 0.816 J 2.13 0.484 J
Chromium 10 10 NE 7.32 J 1.66 J 10.5 1.85 J
Mercury 0.2 1 NE 5.18
Silver 10 20 NE 3.72 J 2.62 J 2.22 J 3.37 J 4.39 J
Notes:
(1) ug/L = micrograms per liter (parts per billion)
(2) mg/L = milligrams per liter (parts per million)
(3) μS = microSiemens
(4) 15A NCAC 2L = North Carolina Groundwater Quality Standards
(5) 15A NCAC 2B = North Carolina Surface Water Quality Standards
S&ME Project No. 1356-07-006
October 2015 - Detected Analytes in Groundwater Monitoring Wells
Table 4
Lincoln County Owl's Den Landfill
Lincolnton, North Carolina
O M I T T E D F R O M G R O U N D W A T E R M O N I T O R I N G P L A N I N 2 0 0 8
EPA Volatile Organic
Compounds Method 8260B
(ug/L)
15A NCAC
2B SW-1 SW-2 SW-3
1,1- Dichloroethane 20,000
1,4 - Dichlorobenzene 100 1.2
Chlorobenzene 140 0.70 J
cis-1,2-Dichloroethene 4,900 0.62 J
EPA RCRA Metals Method
6010B (ug/L)
Barium 200,000 221 226 321
Chromium 50 4.12 J
Notes:
(1) ug/L = micrograms per liter (parts per billion)
(2) 15A NCAC 2B = North Carolina Surface Water Quality Standards for Freshwater
(3) NE = No established standard
(4) Bold indicates above 15A NCAC 2B
(5) J = Analyte was detected between the method detection limit (MDL) and the method reporting limit (MRL)
(6) Target analytes not shown were reported as below detection limits
Table 5
October 2015 - Detected Analytes in Surface Water Samples
Lincoln County Owl's Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
EPA Volatile
Organic Compounds
Method 8260B
(ug/L)
15A NCAC
2L
Soild
Waste
GWP ST
PSW-1 PSW-3 PSW-6 PSW-16
EPA RCRA Metals
Method 6010B
(ug/L)
Barium 700 NE 46.9 111 74.2 42.3
Notes:
NE = No established standard
Table 6
October 2015 - Detected Analytes in Private Supply Wells
Lincoln County Owl's Den Landfill
Lincolnton, North Carolina
S&ME Project No. 1356-07-006
No VOCs were detected in private supply wells during the October 2015 event
Table 7 - Methane Gas Measurements
Data Tracking
Owl's Den Landfill (Permit #55-02)
MMW-1 MMW-2 MMW-3 MMW-4 MMW-5 MMW-6 MMW-7 MMW-8 MMW-9
Apr-03 0 35 0 62 N/A N/A N/A N/A N/A
Oct-03 63 38 31 56 N/A N/A N/A N/A N/A
Apr-04 0 10 0 0 N/A N/A N/A N/A N/A
Oct-04 0 8 10 38 N/A N/A N/A N/A N/A
Apr-05 5 30 44 68 N/A N/A N/A N/A N/A
Oct-05 36 30 18 58 N/A N/A N/A N/A N/A
Apr-06 30 36 0 0 N/A N/A N/A N/A N/A
Oct-06 38 38 0 58 N/A N/A N/A N/A N/A
Apr-07 100 100 20 100 N/A N/A N/A N/A N/A
Oct-07 6 12 20 55 N/A N/A N/A N/A N/A
Apr-08 0.8 20 0 0 N/A N/A N/A N/A N/A
Jul-08 14.4 42 73 0.2 10.6 0 0 0 0
Oct-08 0 15.4 36 12.6 6.2 3.1 0 0 0
Apr-09 8.5 20.6 46 0 6.6 0.2 0 0 0
Oct-09 16.5 17.7 59.3 61.3 4.2 0 0 0 0
Apr-10 N/A 27 N/A 0.2 8.5 0 0 0 0
Jun-10 N/A 27.6 N/A 68.4 9.9 1.5 0 0 0
Jul-10 N/A 19.6 N/A 66.9 9.4 1.7 0 0 0
Aug-10 N/A 13.8 N/A 48.4 6 0 0 0 0
Sep-10 N/A 13 N/A 0 5.3 0 0 0 0
Oct-10 N/A 10.7 N/A 58.5 4.3 0 0 0 0
Nov-10 N/A 10 N/A 6.8 4.1 0 0 0 0
Dec-10 N/A 4.6 N/A 0.1 3.7 0 0 0 0
Jan-11 N/A 12.6 N/A 41.2 3.4 0.2 0 0 0
Feb-11 N/A 13.9 N/A 36.7 4.4 0.2 0 0 0
Mar-11 N/A 15.3 N/A 11.1 4.8 0 0 0 0
Apr-11 N/A 13.1 N/A 0.2 6.2 0 0 0 0
May-11 N/A 15.2 N/A 9.6 3.4 0 0 0 0
Jun-11 N/A 15.1 N/A 48.7 6.3 0 0 0 0
Jul-11 N/A 17.2 N/A 42 9 0 0 0 0
Aug-11 N/A 18.2 N/A 0 5.2 0 0 0 0
Sep-11 N/A 15.5 N/A 66.5 3.7 0 0 0 0
Oct-11 N/A 10.7 N/A 6.4 3.6 0 0 0 0
Nov-11 N/A 4.3 N/A 59.3 3.4 0 0 0 0
Dec-11 N/A 17.9 N/A 60.2 3.8 0.1 0 0 0
Jan-12 N/A 21.4 N/A 36.2 5.4 0 0 0 0
Feb-12 N/A 22.6 N/A 0 5.9 0 0 0 0
Mar-12 N/A 21.6 N/A 36.3 5.9 0 0 0 0
Apr-12 N/A 24.9 N/A 19.7 6.1 0 0 0 0
May-12 N/A 26.2 N/A 70.5 5.2 0.2 0 0 0
Jun-12 N/A 23.4 N/A 70.9 4.5 0 0 0 0
Jul-12 N/A 20.9 N/A 0 3.9 0 0 0 0
Aug-12 N/A 14.2 N/A 8.3 2.4 0 0 0 0
Percent Methane Gas by Date
Well IdentificationDate
Page 1 of 2
Table 7 - Methane Gas Measurements
Data Tracking
Owl's Den Landfill (Permit #55-02)
MMW-1 MMW-2 MMW-3 MMW-4 MMW-5 MMW-6 MMW-7 MMW-8 MMW-9
Percent Methane Gas by Date
Well IdentificationDate
Sep-12 N/A 13.2 N/A 0.4 1.3 0 0 0 0
Oct-12 N/A 15.5 N/A 61.7 1.3 0 0 0 0
Nov-12 N/A 10.8 N/A 1.2 0.7 0 0 0 0
Dec-12 N/A 9.8 N/A 0 0.3 0 0 0 0.8
Jan-13 N/A 18.1 N/A 14.8 0.4 0 0 0 0
Feb-13 N/A 22.9 N/A 29.4 0.7 0 0 0 0
Mar-13 N/A 24.2 N/A 68.5 1 0 0 0 0
Apr-13 N/A 26.1 N/A 70.8 1.5 0 0 0 0
May-13 N/A 27.3 N/A 39.3 1.5 0 0 0 0
Jun-13 N/A 28.6 N/A 46.1 1.6 0 0 0 0
Jul-13 N/A 34.4 N/A 55.9 1.8 0 0 0 0
Aug-13 N/A 33.4 N/A 72.0 2.2 0 0 0 0
Sep-13 N/A 26.9 N/A 40.4 2.3 0 0 0 0
Oct-13 N/A 19.2 N/A 62.6 1.7 0 0 0 0
Nov-13 N/A 13 N/A 44.6 0.5 0 0 0 0
Dec-13 N/A 18.9 N/A 16.6 0.8 0 0 0 0
Jan-14 N/A 24.5 N/A 67.4 1.7 0 0 0 0
Feb-14 N/A 23.4 N/A 35.8 1.5 0 0 0 0
Mar-14 N/A 27.6 N/A 63.1 2.1 0 0 0 0
Apr-14 N/A 28.2 N/A 0 2.8 0 0 0 0
May-14 N/A 31.7 N/A 0.9 2.8 0 0 0 0
Jun-14 N/A 25.1 N/A 31.7 1.7 0 0 0 0
Jul-14 N/A 18.9 N/A 70.2 0.8 0 0 0 0
Aug-14 N/A 17.4 N/A 7.1 0.4 0 0 0 0
Sep-14 N/A 20.2 N/A 70.0 0.5 0 0 0 0
Oct-14 N/A 20.6 N/A 66.6 0.5 0 0 0 0
Nov-14 N/A 14.7 N/A 0 0.3 0 0 0 0
Dec-14 N/A 16.1 N/A 4.4 0.1 0 0 0 0
Jan-15 N/A 19.4 N/A 66.2 0.4 0 0 0 0
Feb-15 N/A 20.2 N/A 62.1 0.7 0 0 0 0
Mar-15 N/A 22.7 N/A 62.4 1.2 0 0 0 0
Apr-15 N/A 23.6 N/A 0 1.1 0 0 0 0
May-15 N/A 26.3 N/A 60 0.5 0 0 0 0
Jun-15 N/A 26.2 N/A 18.4 0.4 0 0 0 0
Jul-15 N/A 18.1 N/A 65.7 0.1 0 0 0 0
Aug-15 N/A 13.9 N/A 59.2 0.0 0 0 0 0
Sep-15 N/A 10.7 N/A 14.6 0.0 0 0 0 0
Oct-15 N/A 10.0 N/A 10.9 0.0 0 0 0 0
Notes:
(1) Recorded measurements are in percent methane.
(2) Methane monitoring wells 5 through 9 were installed during the 2008 assessment activities.
(3) Methane monitoring wells 1 and 3 were removed from the monitoring plan following the 2008 assessment
activities due to their close proximity to the edge of waste.
(4) Highlighted data are above 100 percent of the lower explosive limit.
(5) Lower explosive limit for methane is 5 percent.
(6) Upper explosive limit for methane is 15 percent.
(7) N/A = Not Available
Page 2 of 2
Appendix III – Well Sampling Logs and Laboratory Reports
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-1
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 9:40 5.57 16.2
1.7 9:45 5.42 16.2
2.4 9:50 5.32 16.7
Final 4.1 9:55 5.37 16.4
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
50
34
Disposable Teflon Bailer
10.24
31
28
Electronic Water Level Probe
Approx. 70°F, sunny.
1.7
37.26
47.50
ENCO
8:55
Clear
Disposable Teflon Bailer
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-2
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 11:46 6.56 17.3
2.8 11:47 6.64 17.1
5.6 11:50
Final 8.4 11:51
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab ENCO
9:50
Clear
Disposable Teflon Bailer
17.10
Electric Water Level Probe
Field Clean Typhoon Pump
10/9/2015
571
558
DRY @ 5 gallons
Approx. 70°F, sunny.
23.40
2.8
40.50
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-3
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)50.4 (well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 4/16/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0
Final
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Comments
Lab
Electric Water Level Probe
Approx. 70°F, sunny.
42.51
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-4
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 13:18 6.71 20.2
2.6 13:20 6.75 17.5
5.2 13:23 6.68 17.2
Final 7.8 13:25 6.88 17.3
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Field Cleaned Typhoon Pump
1447
Approx. 70°F, sunny.
2.6
40.96
16.14
57.10
Electric Water Level Probe
1461
1508
1416
ENCO
10:30
Clear
Disposable Teflon Bailer
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-5
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 14:22 7.08 16.0
0.9 14:23 6.44 15.2
1.8 14:24 6.30 14.8
Final 2.7 14:25 6.15 14.7
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Disposable Teflon Bailer
66
Approx. 70°F, sunny.
0.9
27.72
5.48
33.20
Electric Water Level Probe
67
71
71
ENCO
10:55
Disposable Teflon Bailer
Clear
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-6
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 13:40 6.94 16.3
1.2 13:43 6.80 16.2
2.4 13:46 6.75 15.9
Final 3.6 13:49 6.76 15.9
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Disposable Teflon Bailer
832
Approx. 70°F, sunny.
1.2
16.91
7.20
24.11
Electric Water Level Probe
1041
799
822
ENCO
10:40
Disposable Teflon Bailer
Clear
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-6A
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 13:50 7.22 16.1
6.5 13:54 7.45 15.7
13.0 13:57 7.40 16.1
Final 19.5 14:00 7.19 15.8
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Field Cleaned Whale Pump
877
Approx. 70°F, sunny.
6.5
18.60
39.84
58.44
Electric Water Level Probe
654
576
725
ENCO
10:45
Clear
Disposable Teflon Bailer
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-7
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 11:40 6.69 17.5
1.0 11:43 7.09 17.3
2.0 11:46 6.90 17.2
Final 3.0 11:48 7.11 17.0
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Disposable Teflon Bailer
411
Approx. 70°F, sunny.
1.0
22
5.97
27.97
Electric Water Level Probe
420
411
414
ENCO
Broken hinge
9:45
Disposable Teflon Bailer
Clear
10/9/2015
Project Name: Owl's Den Landfill
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-7A
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 12:00 6.48 17.7
4.7 12:05 6.00 17.2
9.4 12:11 6.40 17.3
Final 14.1 12:16 6.46 17.3
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Approx. 70°F, sunny.
633
576
606
4.7
25.85
54.30
28.45
Electric Water Level Probe
Field Cleaned Typhoon Pump
606
ENCO
9:40
Disposable Teflon Bailer
Slightly turbid
10/9/2015
Project Name: Owl's Den Landfill Assessment
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-8
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 10:35 5.65 15.4
1.2 10:38 5.69 14.9
2.4 10:41 5.69 14.7
Final 3.6 10:46 5.68 14.5
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
51
Approx. 70°F, sunny.
1.2
49.21
Electronic Water Level Probe
56.80
7.59
Disposable Teflon Bailer
48
47
48
ENCO
9:20
Clear, some floating solids present
Disposable Teflon Bailer
10/9/2015
Project Name: Owl's Den Landfill Assessment
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-9
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 10:55 6.02 17.5
2.0 11:02 6.00 16.5
4.0 11:08 6.08 16.3
Final 6.0 11:14 6.13 16.8
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
Clear
Disposable Teflon Bailer
Approx. 70°F, sunny.
ENCO
129
118
125
2.0
64.28
122
9:25
Electronic Water Level Probe
Disposable Teflon Bailer
10/9/2015
51.95
12.33
Project Name: Owl's Den Landfill Assessment
Project Location: Lincoln County, North Carolina
Project Number: 1356-07-006
Well ID MW-10
Sampling Personnel J. Tayouga, N. Shuff
Weather Conditions
Unusual Site Conditions
Water Level Data
Measuring Point Location TOC Well Casing Volume
Depth to Water (ft)
Depth to Base of Well (ft)(well casing volume = water column*0.164)
Water Column (ft)
Equipment Used to Measure Depths
Well Purging Data
Date 10/8/2015 Purging Equipment
Total Voume (Gal)Time pH Temp (ºC)Conductance (µS)
Initial 0 10:08 5.80 16.5
1.1 10:11 5.83 16.2
2.2 10:14 5.86 16.3
Final 3.3 10:17 5.88 16.2
Well Sampling Data
Sampling Date
Sampling Time
Sampling Equipment
Sample Observations
Analytical Data
Method Container Type and No.Preservation
Method 8260 (3) 40 ml glass vials HCL
RCRA Metals (1) 250 ml plastic bottles HNO3
Comments
Lab
32
Approx. 70°F, sunny.
1.1
44.26
Electronic Water Level Probe
50.96
6.70
Disposable Teflon Bailer
30
30
30
ENCO
9:10
Clear
Disposable Teflon Bailer
10/9/2015