SW_F_1102-INDUS-1980_10-23-2013_RM_GW.pdf

October 2013
Semi-Annual
Groundwater Monitoring Report
BASF Enka Site
Closed Industrial Landfill Facility Permit No. 11-02
US 19 and 23
Enka, Buncombe County, North Carolina

Prepared for: BASF Corporation
Florham Park, New Jersey

Prepared by:
ELM Site Solutions, Inc. Raleigh, North Carolina
[phone]
November 2013

November 26, 2013
Submitted via Electronic Mail
Ms. Jaclynne Drummond North Carolina Department of Environment and Natural Resources Division of Waste Management Solid Waste Section 1646 Mail Service Center Raleigh, North Carolina 27699‐1646

Subject: October 2013 Semi‐Annual Sampling Report
BASF Enka Site – Closed Industrial Landfill Facility
Sanitary Landfill Facility Permit # 11‐02

Dear Ms. Drummond: ELM Site Solutions, Inc., on behalf of BASF Corporation, herein submits an electronic copy of the
October 2013 semi‐annual sampling report for the above-referenced site. This letter report
presents results of the October 2013 semi‐annual sampling event, which constitutes the second
semi-annual sampling for 2013. The approved groundwater monitoring network consists of MW‐
3, MW‐4R, MW‐5 and background well MW‐6. The monitoring network also includes surface
water sample locations SW‐1 and DW‐1.

In a letter dated November 4, 2010, the North Carolina Department of Environment and Natural
Resources (NCDENR) – Solid Waste Section (SWS) requested the collection of additional surface
water samples from a seep area in conjunction with the semi‐annual groundwater sampling
events for a minimum of five years. Based on discussions and concurrence with NCDENR‐SWS
staff, construction activities were completed in July 2011 in an attempt to eliminate the seep (i.e.,
to keep perched groundwater below grade). Completed construction facilitated a sample
collection point in the event perched groundwater did not fully remain below grade. Sampling
results for the monitoring wells, surface water samples and surface seep are discussed below.

Ten landfill gas monitoring wells (LG-1 through LG-10) were installed at the site in May 2010.
Landfill gas quarterly monitoring events were conducted on June 3, 2013 and September 17,
2013 during this reporting period. Gas monitoring results are discussed below.

FIELD ACTIVITIES
Field Investigation methods for the October 2013 groundwater monitoring event were conducted
in compliance with industry standards and the U.S. Environmental Protection Agency (EPA)
Region IV Field Branches’ Quality System and Technical Procedures (USEPA Procedures). The
field investigation was designed to determine the presence or absence of constituents of interest
in site-wide groundwater. Groundwater samples from the site were collected on October 23, 2013
with a peristaltic pump. The samples collected from monitoring wells MW-4R and MW-6 were
collected with a Monsoon stainless steel submersible pump. Water levels were measured at each
well prior to sampling using a Testwell water level meter and are presented in Table 1. These
groundwater elevations were used to construct potentiometric contours for this sampling event,
which are presented on Figure 1.

Purging was accomplished by using a variable speed peristaltic pump or submersible pump with
the pumping rate adjustable to equal the approximate recharge rate of the well. Indicator
parameters of pH, temperature, specific conductance and turbidity were measured regularly
during purging with a YSI 6920 water quality meter until the measured values stabilized within an
approximate 10 percent tolerance. This method targets the collection of groundwater samples
that have the least total suspended solid count obtainable without filtering in the field, thus giving
a more accurate indication of dissolved constituents present in the aquifer.

Surface water samples were collected directly from Hominy Creek by filling pre‐preserved
laboratory sample containers. The seep sample was collected from a 4‐inch pipe located at the
base of the seep area. Sample locations are shown on Figure 2. Water quality parameters for
the monitoring wells, surface water locations and seep at the time of sampling are presented in
Table 2.

As noted above, 10 landfill gas monitoring wells were sampled on June 3, 2013 and September
17, 2013. Well locations are presented on Figure 3. Percent lower explosive limit (% LEL)
measurements and other applicable parameters (i.e., % methane by volume, % oxygen and %
carbon dioxide) were recorded at the landfill gas monitoring wells using a laboratory calibrated
Landtec GEM 2000 instrument. Sample collection record sheets are provided in Appendix A.

SAMPLING RESULTS Environmental Conservation Laboratories, Inc. in Cary, North Carolina analyzed the groundwater
and surface water samples for Appendix I volatile organic compounds (VOCs) by EPA Method
8260B, Appendix I metals by EPA Methods 6010C/6020A, mercury by EPA Method 7470A,
sulfate by EPA Method 300.0 and total dissolved solids by SM 2540C. The surface seep sample
was analyzed for Appendix I VOCs. In accordance with Solid Waste Section guidelines, analytical
results were reported to the laboratory specific method detection limit and are quantifiable at or
below Solid Waste Section Limits (SWSLs). A copy of the analytical data is presented in
Appendix B.

Monitoring well and surface water samples collecting during the October 2013 monitoring event
at the site had detections of analytes above laboratory method detection limits. Some of the
analyte concentrations exceeded their respective SWSLs, 15A NCAC 2L Groundwater Standards
(hereinafter referred to as the ‘2L Standard’) or the 15A NCAC 2B Surface Water Standards
(hereinafter referred to as the ‘2B Standard’), as applicable. For data analysis, groundwater
monitoring well results were compared to the SWSL and the 2L Standards. Surface water results
were compared to the 2B Standards. Exceedances are discussed below. Analytical results for
detected compounds/elements are summarized in Table 3.

No organic constituents were detected during this monitoring event at non-estimated/qualified
concentrations

Regarding qualified organic data, chlorobenzene was detected in MW-3 and its duplicate sample
(DUP-1) at a “J” flagged concentration of 0.78 ug/L and 0.72 ug/L, respectively. “J” flagged results
indicate the reported concentration was between the method detection limit (MDL) and the
method reporting limit (MRL). Both values were below the SWSL and 2L Standard.

For inorganic constituents, barium, cobalt, sulfate and zinc were detected in groundwater
monitoring wells at non-estimated/qualified concentrations. Barium was detected in three (3)
monitoring wells (MW-3, MW-4R and MW-5) above its SWSL but below its 2L Standard. Cobalt
was detected in three (3) monitoring wells (MW-3, MW-4R and MW-5) above its SWSL and its 2L
Standard. One (1) sulfate detection (MW-5) exceeded its SWSL and 2L Standard. Zinc
exceeded its SWSL in one (1) well.

Regarding qualified inorganic data, barium, chromium, copper, nickel, selenium, silver, sulfate,
thallium and vanadium were detected at “J” flagged concentrations in groundwater monitoring
wells and/or surface water locations. Of these qualified detections, only vanadium (MW-4R) and
sulfate (SW-1 and DW-2) exceeded their respective standard. Vanadium exceeded its 2L
Standard but its SWSL. No 2B Standard has been established for sulfate, and thus, any detection
is considered an exceedance.

Quality assurance/quality control samples were analyzed for the sampling event. No analytes
were detected in the equipment blank or trip blank. A duplicate sample was collected from MW‐
3 (DUP-1) and had similar concentrations to the MW‐3 sample.

As noted above, quarterly landfill gas monitoring events were conducted on June 3, 2013 and
September 17, 2013 at 10 landfill gas wells during the reporting period. All gas wells exhibited
0% LEL through the reporting period. Current and historical landfill gas sampling data are
summarized in Table 4.

In summary, for non-qualified (“J” flagged) data, the following observations were made:
• No organic compounds were detected in site groundwater monitoring wells above SWSL
or 2L Standards.
• Barium was detected at three (3) groundwater monitoring wells (MW-3, 4R and 5) above
its SWSL but below the 2L Standard.
• Cobalt was detected at three (3) groundwater monitoring wells (MW-3, 4R and 5) above
its SWSL and 2L Standard.
• Sulfate was detected in one (1) monitoring well (MW-5) above its SWSL and 2L Standard.
• Zinc was detected in one (1) monitoring well (MW-4R) above it SWSL but below its 2L
Standard.
• No organic compounds were detected in surface water.
• No inorganic elements exceeded their respective 2B Standards in the April 2013 event.
• All gas wells exhibited 0% LEL through the reporting period.

If you have any questions or require any further information, please call Jeremy Odom at (704)
770-1481 or me at [phone].

Sincerely,

Rusty Norris, PE, PLS, RSM Senior Engineer
ENR USE ONLY:OPaper Report DElectronic Data -Email CD data loaded:Yes 1 No Doc/Event #:
C DENR Environmental Monitoring
Division of Waste Management -Solid Waste Reporting Form
Notice:This form and any information attached to it are "Public Records"as defined in NC General Statute 132-1.As such,these documents are
available for inspection and examination by any person upon request (NC General Statute 132-6).
Instructions:
Prepare one form for each individually monitored unit
Please type or print legibly...Attach a notification table with values that attain or exceed NC 2L groundwater standards or NC 2B surface water standards.The notification
must include a preliminary analysis of the cause and significance of each value.(e.g.naturally occurring,off-site source,pre-existing
condition,etc.).Attach a notification table of any groundwater or surface water values that equal or exceed the reporting limits.
Attach a notification table of any methane gas values that attain or exceed explosive gas levels.This indudes any structures on or nearby the
facility (NCAC 13B .1629 (4)(a)(i).Send the original signed and sealed form,any tables,and Electronic Data Deliverable to:Compliance Unit,NCDENR-DWM,Solid Waste
Section,1646 Mail Service Center,Raleigh,NC 27699-1646.
Solid Waste Monitoring Data Submittal Information
Name of entity submitting data (laboratory,consultant,facility owner):
Consultant -ELM Site Solutions,Inc.
Contact for questions about data formatting.Include data preparer's name,telephone number and E-mail address:
Name:Jeremy Brett Odom Phone:.l..:(7..::04:.:!..)7;..:7:...:0:...-1;..:4.:..:8:...:1 _
E-mail:[e-mail]
US 19 and 23,Enka,NC
NC Landfill Rule:
Facility Permit #(0500 or 1600)c:Jc:J Actual sampling dates (e.g.,
October 20-24 2006)Facility name'Facility Address'
BASF Corporation 10/23/2013
Environmental Status:(Check all that apply)o Initial/Background Monitoring [8]Detection Monitoring o Assessment Monitoring o Corrective Action
T of data submitted:(Check all that apply)
Groundwater monitoring data from monitoring wellsGroundwatermonitoringdatafromprivatewatersupply wells
Leachate monitoring data
X Surface water monitoring data
o Methane gas monitoring dataoCorrectiveactiondata(specify)o Other(specify)
Notification attached?D No.No groundwater or surface water standards were exceeded.[8J Yes,a notification of values exceeding a groundwater or surface water standard is attached.It includes a list of groundwater and surface water
monitoring points,dates,analytical values,NC 2L groundwater standard,NC 2B surface water standard or NC Solid Waste GWPS andpreliminaryanalysisofthecauseandsignificanceofanyconcentration.o Yes,a notification of values exceeding an explosive methane gas limit is attached.It includes the methane monitoring points,dates,samplevaluesandexplosivemethanegaslimits.
Certification
To the best of my knowledge,the information reported and statements made on this data submittal and attachments are true and correct
Furthermore,I have attached complete notification of any sampling values meeting or exceeding groundwater standards or explosive gaslevels,and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards.I am aware that therearesignificantpenaltiesformakinganyfalsestatement,representation,or certification including the possibility of a fine and imprisonment.
Jeremy Brett Odom Consultant [phone]
11/26/2013
Title
Date
Facility Representative Address
NC PE Firm License Number (if applicable effective May 1,2009)
Revised 6/2009
Tables

Table 1
Water Level Measurements
October 2013 Semi-Annual Sampling Event
BASF Landfill
Enka, North Carolina
Page 1 of 1 Table 1
Facility Permit
No.Well Identification Date Total Depth
(feet)
Screen
Interval
(feet)
Top of
Casing (Feet
AMSL)
Depth to
Groundwater
(Feet BTOC)
Groundwater
Elevation
(Feet AMSL)
11-02 MW-3 10/23/2013 30.16 18-28 2056.44 7.49 2048.95
11-02 MW-4R 10/23/2013 34.92 23-33 2082.67 26.42 2056.25
11-02 MW-5 10/23/2013 19.35 6-16 2057.62 8.14 2049.48
11-02 MW-6 10/23/2013 41.35 28-38 2114.84 32.69 2082.15
NOTES:
AMSL - Above Mean Sea Level (Vertical Control NAVD 88)
Table 2
General Groundwater Quality Parameters
October 2013 Semi-Annual Sampling Event
BASF Landfill
Enka, North Carolina
Page 1 of 1 Table 2
Facility Permit
No.Well Identification Date pH Temp
(oC)
Conductivity
(µs/cm)
Turbidity
(NTU)
Oxidation
Reduction
Potential
(mV)
DO
(mg/L) TDS (mg/L)
11-02 MW-3 10/23/2013 6.99 15.11 2.680 1.9 -69.7 0.19 2400
11-02 MW-4R 10/23/2013 6.62 15.25 0.232 3.6 112.8 0.90 110
11-02 MW-5 10/23/2013 6.31 15.39 1.230 0.9 -16.9 0.87 810
11-02 MW-6 10/23/2013 6.20 15.28 0.709 1.4 132.1 1.92 46
11-02 SW-1 10/23/2013 7.19 15.22 0.671 8.8 -6.1 0.94 34
11-02 DW-2 10/23/2013 7.10 15.08 0.391 9.2 15.2 1.38 56
11-02 Seep-1 10/23/2013 6.69 14.99 1.327 14.3 -21.5 4.21 NM
NOTES:
DO - Dissolved Oxygen
ORP - Oxidation-Reduction Potential
TDS - reported in milligrams per liter (mg/L).
NM - Not measured
Table 3Groundwater Analytical Results
October 2013 Semi-Annual Sampling EventBASF Landfill
Enka, North Carolina
Page 1 of 1 Table 3
Chlorobenzene Barium Chromium Cobalt Copper Nickel Selenium Silver Sulfate Thallium Vanadium Zinc
50 700 10 1 1,000 100 20 20 250,000 0.2 0.3 1,000
3 100 10 10 10 50 10 10 250,000 5.5 25 10
MW-3 10/23/2013 0.78 J 250 <1.4 10.6 <1.6 25.1 J <0.83 <1.9 40000 J <0.11 <1.4 <3.8
MW-3 (Duplicate)10/23/2013 0.72 J 252 <1.4 10.6 <1.6 25.4 J <0.83 <1.9 40,000 J <0.11 <1.4 <3.8
MW-4R 10/23/2013 <1.0 159 4.68 J 10.8 6.85 J 5.49 J 1.41 J <1.9 26,000 J <0.11 10.2 J 26.2
MW-5 10/23/2013 <1.0 233 2.68 J 23.3 <1.6 <10.0 <0.83 4.33 J 290,000 D 0.12 J <1.4 <3.8
MW-6 10/23/2013 <1.0 70.7 J <1.4 <10.0 <1.6 <10.0 <0.83 <1.9 <2900 <0.11 <1.4 <3.8
NS 200,000 50 4 7 88 5 0.06 NS 0.47 NS 50
SW-1 10/23/2013 <1.0 25.7 J <1.4 <10.0 <1.6 <10.0 <0.83 <1.9 5300 J <0.11 <1.4 <3.8
DW-2 10/23/2013 <1.0 25.1 J <1.4 <10.0 <1.6 <10.0 <0.83 <1.9 7300 J <0.11 <1.4 <3.8
Seep-1 10/23/2013 <1.0 NM NM NM NM NM NM NM NM NM NM NM
Notes:For non-detect measurements (<), the detection limit (Practical Quantitation Limit or PQL) is listed.All concentrations are listed in micrograms per liter (ug/L).1.3 Concentrations that exceed exceed North Carolina 2L Groundwater Standards (April 2013), NC 2B Surface Water Standards (May 2007) or Solid Waste Section Limits (June 2011).1.3 Qualified ("J" Flagged) concentrations that exceed 2L Standards, 2B Standards or SWSLsNS - No Standard
J - Indicates the analytical result is an estimated concentration between the method detection limit and the Solid Waste Section Reporting Limit.D - The sample was analyzed at dilution.B - The analyte was detected in the associated method blank.NM - Not measured
15A NCAC 2B Standard
Monitoring Well and
Surface Water I.D.Sample Date
15A NCAC 2L Standard
Solid Waste Section Limit
Table 4
Landfill Gas Sampling Data
BASF Enka Landfill
Enka, North Carolina
LFG SAMPLE Sample Sample Tube Time % CH4
WELL ID DATE Time Purge Pumped By Volume12/13/2010 1124 >60s >60s 0 0 17.0 4.8
LG-1 3/11/2011 1335 >60s >60s 0 0 18.2 3.8
6/3/2011 1100 >60s >60s 0 0 17.0 3.4
10/12/2011 1130 >60s >60s 0 0 16.8 3.812/14/2011 1300 >60s >60s 0 0 17.0 3.7
3/8/2012 1200 >60s >60s 0 0 17.3 3.6
6/14/2012 1115 >60s >60s 0 0 17.0 3.8
9/26/2012 1200 >60s >60s 0 0 17.2 3.6
12/3/2012 1200 >60s >60s 0 0 18.3 3.93/27/2013 1200 >60s >60s 0 0 18.0 3.4
6/3/2013 1300 >60s >60s 0 0 15.3 3.0
9/17/2013 1130 >60s >60s 0 0 14.5 7.2
12/13/2010 1131 >60s >60s 0 0 18.9 2.2LG-2 3/11/2011 1345 >60s >60s 0 0 20.4 0.9
6/3/2011 1130 >60s >60s 0 0 19.5 2.3
10/12/2011 1145 >60s >60s 0 0 18.1 2.4
12/14/2011 1330 >60s >60s 0 0 18.6 2.2
3/8/2012 1145 >60s >60s 0 0 19.3 1.8
6/14/2012 1130 >60s >60s 0 0 18.5 2.4
9/26/2012 1215 >60s >60s 0 0 18.8 2.2
12/3/2012 1230 >60s >60s 0 0 19.2 2.03/27/2013 1230 >60s >60s 0 0 19.6 2.56/3/2013 1315 >60s >60s 0 0 16.8 3.3
9/17/2013 1140 >60s >60s 0 0 17.5 3.7
12/13/2010 1136 >60s >60s 0 0 18.6 3.2LG-3 3/11/2011 1400 >60s >60s 0 0 19.7 2.1
6/3/2011 1200 >60s >60s 0 0 17.4 3.4
10/12/2011 1200 >60s >60s 0 0 17.8 3.0
12/14/2011 1345 >60s >60s 0 0 18.0 2.93/8/2012 1230 >60s >60s 0 0 18.4 2.86/14/2012 1200 >60s >60s 0 0 18.8 2.5
9/26/2012 1230 >60s >60s 0 0 18.6 2.7
12/3/2012 1245 >60s >60s 0 0 18.9 2.9
3/27/2013 1245 >60s >60s 0 0 20.4 2.46/3/2013 1230 >60s >60s 0 0 16.8 3.2
9/17/2013 1150 >60s >60s 0 0 17.4 3.8
12/13/2010 1143 >60s >60s 0 0 16.6 5.5
LG-4 3/11/2011 1415 >60s >60s 0 0 18.8 2.8
6/3/2011 1230 >60s >60s 0 0 17.8 3.2
10/12/2011 1230 >60s >60s 0 0 14.1 5.4
12/14/2011 1400 >60s >60s 0 0 13.9 5.3
3/8/2012 1245 >60s >60s 0 0 16.8 4.26/14/2012 1215 >60s >60s 0 0 16.4 4.4
9/26/2012 1245 >60s >60s 0 0 16.5 4.6
12/3/2012 1300 >60s >60s 0 0 15.5 5.9
3/27/2013 1300 >60s >60s 0 0 19.9 3.26/3/2013 1430 >60s >60s 0 0 16.0 4.29/17/2013 1200 >60s >60s 0 0 12.9 6.4
% LEL % O2 % CO2
Table 4
Landfill Gas Sampling Data
BASF Enka Landfill
Enka, North Carolina
LFG SAMPLE Sample Sample Tube Time % CH4
WELL ID DATE Time Purge Pumped By Volume % LEL % O2 % CO2
12/13/2010 1159 >60s >60s 0 0 14.2 6.7
LG-5 3/11/2011 1430 >60s >60s 0 0 15.6 5.7
6/3/2011 1300 >60s >60s 0 0 16.1 5.5
10/12/2011 1300 >60s >60s 0 0 15.6 5.212/14/2011 1430 >60s >60s 0 0 15.9 5.4
3/8/2012 1330 >60s >60s 0 0 14.6 6.16/14/2012 1245 >60s >60s 0 0 14.8 5.9
9/26/2012 1300 >60s >60s 0 0 14.2 6.012/3/2012 1330 >60s >60s 0 0 15.1 7.0
3/27/2013 1330 >60s >60s 0 0 14.7 6.0
6/3/2013 1500 >60s >60s 0 0 15.1 5.7
9/17/2013 1230 >60s >60s 0 0 15.5 4.9
12/13/2010 1207 >60s >60s 0 0 18.9 2.1
3/11/2011 1500 >60s >60s 0 0 19.8 1.8
LG-6 6/3/2011 1320 >60s >60s 0 0 19.4 1.6
10/12/2011 1000 >60s >60s 0 0 16.3 4.4
12/14/2011 1115 >60s >60s 0 0 16.7 4.9
3/8/2012 1400 >60s >60s 0 0 18.1 3.2
6/14/2012 1330 >60s >60s 0 0 17.6 3.4
9/26/2012 1330 >60s >60s 0 0 17.5 3.512/3/2012 1400 >60s >60s 0 0 20.2 1.5
3/27/2013 1400 >60s >60s 0 0 17.9 3.5
6/3/2013 1530 >60s >60s 0 0 17.4 3.6
9/17/2013 1300 >60s >60s 0 0 20.5 0.912/13/2010 1215 >60s >60s 0 0 19.4 1.1
3/11/2011 1515 >60s >60s 0 0 17.9 1.1
6/3/2011 1345 >60s >60s 0 0 17.8 1.3
LG-7 10/12/2011 1015 >60s >60s 0 0 17.9 2.212/14/2011 1100 >60s >60s 0 0 18.3 1.5
3/8/2012 1000 >60s >60s 0 0 18.7 2.2
6/14/2012 1030 >60s >60s 0 0 18.1 3.0
9/26/2012 1030 >60s >60s 0 0 18.0 2.9
12/3/2012 1030 >60s >60s 0 0 19.9 1.33/27/2013 1030 >60s >60s 0 0 21.9 0.3
6/3/2013 1115 >60s >60s 0 0 19.0 0.4
9/17/2013 1000 >60s >60s 0 0 18.9 2.3
12/13/2010 1222 >60s >60s 0 0 18.0 2.9
3/11/2011 1530 >60s >60s 0 0 13.9 3.6
LG-8 6/3/2011 1430 >60s >60s 0 0 16.2 3.5
10/12/2011 1030 >60s >60s 0 0 16.2 3.1
12/14/2011 1145 >60s >60s 0 0 15.9 3.0
3/8/2012 1030 >60s >60s 0 0 19.1 1.9
6/14/2012 1040 >60s >60s 0 0 18.3 2.6
9/26/2012 1100 >60s >60s 0 0 18.2 2.4
12/3/2012 1050 >60s >60s 0 0 19.2 2.43/27/2013 1045 >60s >60s 0 0 18.7 2.4
6/3/2013 1145 >60s >60s 0 0 16.4 4.2
9/17/2013 1015 >60s >60s 0 0 18.3 4.1
Table 4
Landfill Gas Sampling Data
BASF Enka Landfill
Enka, North Carolina
LFG SAMPLE Sample Sample Tube Time % CH4
WELL ID DATE Time Purge Pumped By Volume % LEL % O2 % CO2
12/13/2010 1227 >60s >60s 0 0 18.1 3.1
3/11/2011 1545 >60s >60s 0 0 17.9 1.8
6/3/2011 1500 >60s >60s 0 0 17.5 2.1
LG-9 10/12/2011 1040 >60s >60s 0 0 17.2 3.4
12/14/2011 1215 >60s >60s 0 0 17.5 3.5
3/8/2012 1100 >60s >60s 0 0 20.7 0.4
6/14/2012 1050 >60s >60s 0 0 19.9 1.2
9/26/2012 1115 >60s >60s 0 0 19.7 1.2
12/3/2012 1100 >60s >60s 0 0 19.5 2.93/27/2013 1100 >60s >60s 0 0 22.2 0.2
6/3/2013 1200 >60s >60s 0 0 14.0 2.5
9/17/2013 1030 >60s >60s 0 0 15.3 4.4
12/13/2010 1235 >60s >60s 0 0 15.5 5.8
3/11/2011 1600 >60s >60s 0 0 16.8 4.7
LG-10 6/3/2011 1515 >60s >60s 0 0 17.1 3.8
10/12/2011 1100 >60s >60s 0 0 14.9 5.6
12/14/2011 1230 >60s >60s 0 0 14.2 5.7
3/8/2012 1115 >60s >60s 0 0 14.9 5.0
6/14/2012 1100 >60s >60s 0 0 14.7 4.9
9/26/2012 1130 >60s >60s 0 0 14.6 4.8
12/3/2012 1130 >60s >60s 0 0 16.0 5.83/27/2013 1130 >60s >60s 0 0 16.8 4.46/3/2013 1345 >60s >60s 0 0 14.9 4.59/17/2013 1100 >60s >60s 0 0 10.9 8.5
Notes:
Landfill gas data were collected using a calibrated Landtec GEM 2000+.
CH4 = Methane; O2 = Oxygen; CO2 = Carbon Dioxide; LEL = Lower Explosive Limit; 5% CH4 = 100 % LEL
Figures

Figure 1 – Potentiometric Surface Map
October 2013 Semi-Annual Sampling Event Source: October 2010 Aerial Photograph, Google Earth Scale: 1” = 200’

Site Name: BASF Closed Industrial Landfill Enka, North Carolina

MW-5 (2049.48)
MW-6 (2082.15)
MW-4R (2056.25)
Monitoring Well
Groundwater Elevation
Potentiometric Contour
(2056.25)
MW-3 (2048.95)
(2050)
(2080)
(2060)
(2070)
Hominy Creek
Permitted Facility
Boundary

Figure 2 – Surface Water Sample Locations
October 2013 Semi-Annual Sampling Event Source: October 2010 Aerial Photograph, Google Earth Scale: 1” = 350’

Site Name: BASF Closed Industrial Landfill Enka, North Carolina
Surface Water Sample Location
Hominy
Creek Permitted Facility Boundary SW-1
DW-2
Seep-1

MW-4
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DATE: 04-22-10
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PROJECT: 1007-10-008
This drawing is the property of ELMSite Solutions, Inc and is not to bereproduced or copied in whole or in
part. It is only to be used for the projectand site specifically identified hereinand is not to be used on any otherproject. It is to be returned uponrequest.
NO
.
DA
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S
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H
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NO
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A
EXISTING TREELINE
NEW LANDFILL GAS
EXISTING POWERLINE
EXISTING MINOR CONTOUR
EXISTING MONITORING WELL
EXISTING MAJOR CONTOUR
LEGEND
P
EXISTING FENCEXXX
PERMITTED LANDFILL VOLUME = 406460 CUBIC YARDS
NOTES
AREA WITHIN ORIGINAL SOLID WASTE PERMIT BOUNDARY = 28.13 ACRES
ORIGINAL TOPOGRAPHIC SURVEY DATA AND SITE INFORMATION PROVIDED
FROM A SURVEY MAP TITLED TOPOGRAPHIC SURVEY - APRIL 2003
BASF CORPORATION INDUSTRIAL LANDFILL, ENKA, N.C., DRAWING
NO. 97053-4_1_03; PREPARED BY C.O. HAMPTON COMPANY -
LAND SURVEYORS, P.O. DRAWER 1319, FLETCHER, N.C.
AREA WITHIN NEW SOLID WASTE PERMIT BOUNDARY = 41.75 ACRES
AS-BUILT SURVEY DATA AND SITE INFORMATION PROVIDED FROM
A SURVEY MAP TITLED SURVEY OF SOLID WASTE LANDFILL, PERMIT NO. 11-02,
COLBOND ACQUISITION I INC.; DRAWING NO. 05167FINAL-V2000; PREPARED BY
2778, ASHEVILLE, N.C.
NEW PERMITTED FACILITY BOUNDARY REQUIRED PER NCDENR LETTER
DATED APRIL 1, 2004.
BETH B. GILLAM, P.L.S., OF HUTCHISON-BIGGS & ASSOCIATES, INC., P.O. BOX
MW-2 ABANDONED ON APRIL 23, 2009 IN ACCORDANCE WITH 15A NCAC 2C.0113.
MW-6 INSTALLED ON APRIL 23, 2009.
TBM - TEMPORARY BENCH MARKS
LANDFILL GAS MONITORING WELL LOCATIONS ARE APPROXIMATE. FINAL
LOCATIONS WILL BE INFLUENCED BY ACCESS AND OTHER POTENTIAL
IMPEDIMENTS. AN AS-BUILT SURVEY WILL BE COMPLETED ONCE FINAL
INSTALLATIONS ARE COMPLETE.
SITE LOCATION - N.T.S.
I-40
HWY-19/23
SAND HILL

R
D
SITE
MONITORING WELLS
1.
5/
1
9
/
1
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S
Appendix A

Landfill Gas Monitoring
Field Collection Sheets
Appendix B

Analytical Data