HomeMy WebLinkAbout1101_BuncombeClosed_MSWLF_GW_DIN28760_20171010
Old Buncombe County Landfill
Permit No. 1101
Fall 2017 Semi-Annual Monitoring and Monitored
Natural Attenuation Sampling Report
Presented to:
Buncombe County Solid Waste Department
81 Panther Branch Road
Alexander, North Carolina 28701 (828)250-5460
Presented by:
SCS ENGINEERS, PC
5850 S Semoran Blvd
Orlando, FL 32822
(813) 804-6791
February 6, 2018
File No. 09204072.15
Offices Nationwide
www.scsengineers.co
Old Buncombe County Landfill i Semi-Annual &
MNA Sampling Report
Table of Contents
Section Page
1 INTRODUCTION ...................................................................................................................................................1
2 BACKGROUND .....................................................................................................................................................1
3 SAMPLING METHODOLOGY ..........................................................................................................................3
4 SEMI-ANNUAL SAMPLING RESULTS .............................................................................................................3
SURFACE WATER ................................................................................................................................................. 3
GROUNDWATER DETECTIONS ...................................................................................................................... 3
GROUNDWATER EXCEEDANCES .................................................................................................................. 4
5 MNA SAMPLING RESULTS ................................................................................................................................4
BIOCHLOR MODEL .............................................................................................................................................. 5
6 CONCLUSIONS AND RECOMMENDATIONS ............................................................................................5
7 REFERENCES ...........................................................................................................................................................6
Figures
Figure 1. Groundwater Contours
Tables
Table1. Sample Parameters Table 2. EPA Screening Table
Table 3. EPA Screening Interpretations
Appendices Appendix A – Sampling Forms
Appendix B – Well Condition Summary
Appendix C – Chain of Custody
Appendix D – Surface Water Detections
Appendix E – Surface Water Exceedances
Appendix F – Groundwater Detections
Appendix G – Groundwater Exceedances
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1 INTRODUCTION
On behalf of the Buncombe County Solid Waste Division, SCS Engineers, PC (SCS) respectfully submits this report summarizing the findings of the fall 2017 semi-annual sampling event to the Solid Waste Section and the Underground Injection Control (UIC) Program (permit
#W10100353) of the North Carolina Department of Environmental Quality (DEQ). SCS conducted semi-annual sampling at the Buncombe County Solid Waste Management Facility Old Landfill (permit no. 1101) on October 10th through October 26th, 2017. Sampling for Monitored Natural Attenuation was also performed in accordance with the Corrective Action Plan (CAP) approved by DEQ on September 24, 2014.This report summarizes the sampling
methodology, results, conclusions and recommendations from this semi-annual sampling event.
2 BACKGROUND
The Old Buncombe County Landfill (OBCL), located at 2726 Riverview Road is closed and
currently monitored under post-closure care. The OBCL was an unlined landfill and approved to
receive municipal, industrial, and construction solid wastes, along with household waste and
yard debris. Leachate from the waste areas have mixed with the groundwater as evidenced from
chlorinated solvents detected in down-gradient monitoring wells in excess of North Carolina
Department of Environment and Natural Resources (NCDENR) standards beginning in 1985 to
the present.
Waste Areas A, B, and C stopped receiving waste prior to October 9, 1991. Area D stopped
receiving waste on September 27, 1997 in accordance with the North Carolina Solid Waste
Management Rule T15A: 13B .1627(c)(10)(A). Institutional controls are in place which restricts
access to and use of the OBCL, and eliminates or minimizes exposure to site contaminants. All
disposal areas have been closed and capped in accordance with permit modifications for closure
under 15A North Carolina Administrative Code (NCAC) Chapter 13B.
The OBCL has controlled access and perimeter fencing to limit site access. An active gas
collection system was constructed and is operated by Enerdyne. This system generates power
from a small facility located on the property. The County has constructed a Safety Training
Facility on property outside of the waste fill area but within the original landfill property limits.
This area has controlled access and perimeter fencing that separates its facilities from the waste-
containing areas of the landfill property. The habitable buildings in this area are equipped with
sub-floor vapor extraction systems and gas detectors that are monitored continuously by on-site
personnel. While these vapor intrusion controls have been installed specifically to address
potential methane gas issues, it is expected that the vapor systems in permanently occupied
spaces will also help to mitigate any potential issues arising from a vapor intrusion pathway.
The groundwater plume has been monitored over the years by a series of monitoring wells
around the perimeter of the landfill (Figure 1). Currently 24 monitoring wells are sampled semi-
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annually (DPL-2 was converted to an Injection Well prior for the fall 2015 injection event).
Groundwater samples collected from these wells have been analyzed for the typical landfill
parameters (metals, semi-volatile organic compounds, volatile organic compounds, etc.).
Concentrations in excess of the Title 15A NCAC Subchapter 2L (NC2L) groundwater standards
have been reported primarily for metals and volatile organic compounds (VOCs). The extent of
the groundwater plume has been delineated and concentrations of contaminants have generally
been declining. Additional remedial measures, enhanced in-situ bioremediation (EIB) were
performed in September 2015 in accordance with the March 2015 CAP Addendum and the
Injection Permit WI0100353.
Five main groundwater flow paths, referred to as transects, have been identified down-gradient
from the OBCL waste piles presented below.
Transect 1 Transect 2 Transect 3 Transect 4 Transect 5
MW-4A MW-B MW-3 MW-DPL-2 MW-6
MW-12-25 MW-17-60 MW-21-21 MW-4 MW-6-192
MW-13-35 MW-17-137 MW-21-94 MW-19-75 MW-5
MW-13-132 MW-19-110 DPL-1
MW-24-45 MW-18-78
MW-24-160
Italicized- EIB Injection Well
Bold-MNA Performance Well Bold & Italicized-MNA Sentinel Well
Transects 1 and 5 appear to be long enough to naturally attenuate VOCs observed immediately
down-gradient from the waste piles prior to reaching the French Broad River. MNA is the only
remedial activity for Transects 1 and 5. Transect 2 appears to have been successfully remediated
following the pilot testing of EIB using hydrogen release compound injection. Transect 3 and 4
show contaminants reach the French Broad River before natural attenuation processes may
completely de-chlorinate site VOCs. Therefore more aggressive clean-up actions consisting of
enhancing natural attenuation through substrate addition were implemented along the short flow
path system.
DPL-2 and the newly installed IW-1 were used as the fractured bedrock injection points for
substrate addition based on their close proximity to the source plume. Direct injection to the base
of the regolith was also used to treat the high flow zone which may be used to remediate both
short and long fracture controlled flow paths along Transects 3 and 4. Substrate addition was
conducted in September, 2015 prior to the fall 2015 semi-annual sampling event.
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3 SAMPLING METHODOLOGY
Twenty one monitoring wells were sampled during the fall 2017 event. Three monitoring wells were dry and no samples were collected (DPL-1, MW-24-45, and MW-7). Groundwater samples were collected from October 10th through 16th, 2017. The four surface water samples were
collected on October 10th, 2017. All samples were collected and analyzed by Pace Laboratories (Pace) in Asheville, NC for analysis of Appendix I and II constituents list as well as MNA parameters as specified in Table 1. All groundwater sampling and analyses were performed in accordance with 15A NCAC 13B .1632 and the approved CAP.
Pace analytical laboratories collected groundwater samples, to be tested for MNA parameters, from 10 monitoring wells (MW-2, MW-4, MW-6, MW-13-132, MW-18-78, MW-19-75, MW-19-110, MW-21-21, MW-21-94, and MW-24-160).
Field parameters including pH, temperature, specific conductivity, turbidity, dissolved oxygen,
oxidative/reductive potential (ORP) and water level were measured and recorded at each groundwater, surface water and leachate sampling site. Field logs with recorded parameters are included in Attachment A and well condition summary forms are included in Attachment B.
After samples were collected, they were placed on ice, logged on a chain of custody and sent to
Pace Laboratories in Asheville, NC, a laboratory certified by the State of North Carolina for all applicable analyses. A copy of the chain of custody is provided as Attachment C.
4 SEMI-ANNUAL SAMPLING RESULTS
A groundwater contour maps was created from the water level field data and is included as Figure 1.
SURFACE WATER
A summary of detections is provided in Appendix D. Metals detected in the surface water samples were barium, copper, vanadium, and zinc. No VOCs were detected in surface water samples.
Two samples exceeded turbidity maximum contaminate levels (MCL) of 25 NTUs at SW-1
(91.78 NTUs) and SW-2 (79.49 NTUs). A summary of surface water exceedances is included in Appendix E.
GROUNDWATER DETECTIONS
Metals and VOCs were detected in ground water samples. A summary of groundwater detections
is included in Appendix F. VOC constituents detected include 1,1-dichloroethane, 1,2-
dichlorobenzene, 1,4-dichlorobenzene, benzene, chlorobenzene, chloroethane, cis-1,2-
dichloroethene, ethylbenzene, toluene, trichloroethene, vinyl chloride, σ-xylene, and xylene.
Metal constituents detected include barium, cadmium, chromium, cobalt, copper, lead, nickel, vanadium, and zinc.
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GROUNDWATER EXCEEDANCES
Ten of the 21 monitoring wells sampled had concentrations in excess of the NC2L Groundwater Standards. A summary of groundwater exceedances is provided in Appendix G. The exceedances were consistent with historic concentrations at their respective wells. VOCs exceedances were as follows: 1,1-dichloroethane was above the MCL of 6 ug/L in MW-3 (7.5 ug/L), MW-4 (15.6 ug/L), and MW-21-21(7.5 ug/L); benzene was above the MCL of 1 ug/L in MW-13-132 (1.2 ug/L), MW-13-35 (2.4 ug/L), MW-4 (1.1 ug/L), and MW-6 (1.2 ug/L); vinyl chloride was above the MCL of 0.03 ug/L in MW-B (1.6 ug/L), MW-21-21 (2.3 ug/L), MW-3
(2.9 ug/L), and MW-4 (4.6 ug/L). These exceedances are all break-down products of Trichloroethene (TCE) and are indicators of biodegradation as a result of the 2014 injection. Metals exceedances were as follows: barium was above the maximum contaminant level of 700 ug/L in MW-4 (720 ug/L), MW-4A (779 ug/L), and MW-6 (1340 ug/L); cadmium was above the
MCL of 2 ug/L in MW-4 (71.6 ug/L); chromium was above the MCL of 10 ug/L in MW-15 (19.2 ug/L); cobalt was above the MCL of 1 ug/L in MW-21-21 (7 ug/L), MW-3 (18.3 ug/L), MW-4 (90.8 ug/L), MW-4A (37.9 ug/L), and MW-5 (9.3 ug/L); nickel was above the MCL of 100 ug/L in MW-4 (136 ug/L); vanadium was above the MCL of 0.3 ug/L in MW-4 (8.4 ug/L).
5 MNA SAMPLING RESULTS
A summary of the MNA parameters exceeding their respective NC2L limit is included in Appendix G. The fall 2017 results were evaluated using the analytical parameters and weighting for preliminary screening for anaerobic biodegradation processes presented in the EPA Technical
Protocol for Evaluating Natural Attenuation of Chlorinated Solvents (EPA 1998). Each well’s “Sum of Screening Values” indicates whether there exists sufficient evidence to support the assumption of ongoing natural attenuation. The scores are based on predictable indicators of biodegradation found within changes in the groundwater chemistry and ascertain the presence of bio-dechlorination but not the rate or level at which it is occurring.
The screening table is presented as Table 2 and the score interpretations are presented in Table 3. Results from the screening indicate that there is strong evidence for anaerobic biodegradation at MW-4, which is immediately downgradient of the injection location. There is inadequate evidence to support anaerobic biodegradation at MW-24-160, which is close to the river and the
furthest well from the injection location. There is adequate to limited evidence of anaerobic biodegradation for the rest of the performance wells screened (MW-6, MW-13-132, MW-18-78, MW-19-75, MW-19-110, MW-21-21, MW-21-94, MW-24-160). Tetrachloroethene (PCE) in MW-4 has remained not detected (ND) since fall 2016 and is ND in
all other MNA wells. Trichloroethene (TCE) has steadily dropped in MW-4 since the injection, but had a slight rebound to 1.2 ug/L in this last sampling round, but does not exceed the associated MCL. TCE is ND in the other MNA wells. Cis-1,2-Dichloroethene (DCE) has increased from 23 ug/L to 26.1 ug/L in MW-4, which indicates biodegradation of TCE. DCE increased in MW-18-78 from ND to 1.4 ug/L and increased in MW-21-21 from 9.8 ug/L to 12.6
ug/L. DCE decreased in MW-13-132 from 22.6 ug/L to 20.9 ug/L and in MW-21-94 from 3.7
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ug/L. DCE decreased in MW-13-132 from 22.6 ug/L to 20.9 ug/L and in MW-21-94 from 3.7
ug/L to 2.8 ug/L. DCE remained ND in MW-2, MW-6, MW-19-75, MW-19-110, and MW-24-160. Vinyl Chloride (VC) increased in MW-4 from 3.6 ug/L to 4.6 ug/L and had a slight increase in MW-21-21 from 2.2 ug/L to 2.3 ug/L. VC decreased in MW-18-78 from 1.8 ug/L to ND (less than 1.0 ug/L). VC remained ND in MW-2, MW-6, MW-13-132, MW-19-75, MW-19-110,
MW-21-94, and MW-21-160. These decreases in parent product (PCE and TCE) and increases in
daughter products (DCE and VC) indicate that the injection is still catalyzing the biodegradation of TCE.
BIOCHLOR MODEL
The data from this sampling event were compared to the BIOCHLOR model output generated with 2016 data. The BIOCHLOR model simulates the sequential reductive dechlorination of chlorinated ethanes and ethenes. The model assumes anaerobic conditions and sequential first-
order kinetics as the mechanisim of degradation. In this case, ethenes were the constituents modeled. The fall 2017 sampling results are generally in line with the model. The model predicted that with sequential first order decay (biotransformation) tetrachloroethene (TCE) would be just over 0.001 mg/L in 25 years at 500 ft from the source. Current sample data from MW-4, which currently has the highest concentration of TCE at the Site and was modeled at 450
ft from the source, is at 0.0012 mg/L. Dichloroethene (DCE), specifically cis-1,2,-dichloroethne in this case, was predicted by the model to be at 0.0027 mg/L at 300 ft and 600 ft from the source in 25 years. The model predicted vinyl chloride (VC) to be at 0.006 mg/L at 300 feet from the source and at 0.004 600 feet from the source under biotransformation. Sample results from MW-4 were 0.0046 mg/L.
6 CONCLUSIONS AND RECOMMENDATIONS
The OBCL data presented in this report provides multiple lines of evidence to demonstrate
natural attenuation is occurring on site in accordance with EPA Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents (EPA 1998). Overall contaminant concentrations of highly chlorinated VOCs have been decreasing.
Based on the data presented in this report, SCS reaches the following conclusions:
• Groundwater VOC exceedances are mostly break-down products of TCE, indicating that
biodegradation of TCE is still occurring;
• There is strong evidence to support anaerobic biodegradation at MW-4;
• There is inadequate evidence to support anaerobic biodegradation at MW-12-160;
• There is adequate to limited evidence to support biodegradation at performance wells
MW-6, MW-13-132, MW-18-78, MW-19-75, MW-19-110, MW-21-21, MW-21-94,
MW-24-160;
• Levels of PCE and TCE in MNA wells are decreasing, while break-down products DCE
and VC are increasing, indicating biodegradation is still occurring;
• MNA constituent levels are following the predictions of the BIOCHLOR model.
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SCS recommends continued semi-annual and MNA sampling in accordance with the current
sampling plan. The next sampling event is scheduled for spring of 2018.
7 REFERENCES
EPA. 1998. Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground Water. EPA/600/R-98/128, U.S. Environmental Protection Agency, Office of Research and Development, Washington D.C.
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FIGURES
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TABLES
Site ID Total
Depth Type Semi-Annual
MNA
Semi-Annual
Appendix I Metals
& Volatiles
Annual
Appendix II
Field
Parameters
MW-B 15.4 Compliance Yes Yes
MW-2 175 Background Yes Yes Yes Yes
MW-3 90 Compliance Yes Yes
MW-4 75 Performance Yes Yes Yes
MW-4A 77 Compliance Yes Yes
MW-5 80 Compliance Yes Yes Yes
MW-6 40 Performance Yes Yes Yes Yes
MW-6-192 192 Compliance Yes Yes
MW-7 29 Compliance Yes Yes
MW-12-25 26 Compliance Yes Yes
MW-13-35 35 Compliance Yes Yes
MW-13-132 132 Performance Yes Yes Yes
MW-15 72 Compliance Yes Yes
MW-17-60 60 Compliance Yes Yes
MW-17-137 137 Compliance Yes Yes
MW-17-310 310 Compliance Yes Yes
MW-18-78 78 Sentinel Yes Yes Yes
MW-19-75 75 Compliance Yes Yes Yes
MW-19-110 110 Sentinel Yes Yes Yes
MW-21-21 21 Performance Yes Yes Yes
MW-21-94 94 Sentinel Yes Yes Yes
MW-24-45 45 Compliance Yes Yes
MW-24-160 160 Sentinel Yes Yes Yes
DPL-1 65 Compliance Yes Yes Yes
DPL-2 97 EIB Well Yes* Yes* Yes*
*This well has been removed from the sampling schedule following enhancement application.
EIB Well-This well was used as injection wells for Enhanced In-Situ Bioremediation (EIB).
MONITORING WELL SAMPLING SUMMARY
TABLE 1
EPA Biodegradation Parameters Units Analytical Result/
Screening Value Date MW-2 MW-4 MW-6 MW-13-132 MW-18-78 MW-19-75 MW-19-110 MW-21-21 MW-21-94 MW-24-160
Fall 2014 6.1 6.1 6.1 6.7 6.4 ---7.3 6.3 6.4 7.2
Spring 2015 6.1 6.0 6.0 6.8 6.4 ---7.3 6.2 6.5 7.2
Fall 2015 6.3 6.1 6.1 7 6.5 6.2 7.2 6.2 6.7 7.1
Spring 2016 6.0 5.9 5.8 6.9 6.2 5.9 7.2 6.1 6.3 7.0
Fall 2016 6.3 6.1 6 6.8 6.2 6.4 7.2 6.2 6.6 7.2
Spring 2017 6.2 6 6.1 6.9 6.4 6.2 7.3 6.2 6.5 7.1
Fall 2017 5.9 6 6 6.9 6.2 6.1 7.2 6 6.6 11.9
Screening Value Fall 2017 ---0 0 0 0 0 0 0 0 -2
Fall 2014 21.7 14.3 24.5 15.7 16.3 ---16.5 16.3 19.5 14.5
Spring 2015 20.8 15.0 16.4 17.3 17.3 ---18.1 13.6 14.1 12.7
Fall 2015 12.9 16.5 18.9 13.9 16.1 17.1 16.9 17.8 18.5 18.4
Spring 2016 14.9 19.5 15.2 14.4 14.2 16.5 18.0 17.4 17.4 18.4
Fall 2016 18.5 18.3 16.9 18.3 50.6 19.4 18.2 22.3 20 26.6
Spring 2017 20.4 16.6 12.2 15.7 17.4 18.2 18.5 15.9 16.6 16.6
Fall 2017 10 18.4 21.1 16.3 19.8 19.6 23.2 23.3 23.3 6.6
Screening Value Fall 2017 ---0 1 0 0 0 1 1 1 0
Fall 2014 120 987 1292 249 701 ---607 1337 909 147
Spring 2015 122 973 1241 302 651 ---560 1228 964 149
Fall 2015 118 970 1263 305 678 1089 550 1157 960 151
Spring 2016 122 990 1232 314 709 1112 527 1419 878 174
Fall 2016 121.2 982 1256 324 735 1105 511 1409 976 160
Spring 2017 130 965 1333 323 722 1148 505 1218 892 160
Fall 2017 128 962 1306 322 834 1146 495 1195 885 180
Screening Value Fall 2017 ------------------------------
Fall 2014 2.88 2.58 0.82 1.14 0.12 ---1.1 2.42 1.21 4.6
Spring 2015 3.91 2.9 1.03 1.09 0.81 ---0.76 1.57 1.62 3.71
Fall 2015 4.66 1.6 0.6 0.38 0.16 0.57 0.63 0.29 0.38 3.01
Spring 2016 3.25 2.87 0.97 1.04 0.66 0.6 1.43 0.67 0.7 1.96
Fall 2016 5.3 0.89 0.4 0.95 1.9 1.69 2.34 1.14 1.31 2.84
Spring 2017 3.75 1.79 1.86 1.4 1.49 1.62 1.49 1.87 3.67 3.37
Fall 2017 4.62 0.81 1.55 0.83 0.6 1.41 0.63 0.71 1.75 2.91
Screening Value Fall 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 277 1.91 2.05 1.59 2.15 ---2.2 2.04 1.93 4.8
Spring 2015 3.2 3.14 4.09 4.22 29 ---3.13 16.7 4.01 5.7
Fall 2015 1.74 6.93 24.78 0.42 0.35 1.78 3.05 2.51 6.68 3.79
Spring 2016 2.78 2.15 1.17 1.15 3.9 25.48 9.37 5.66 30.9 7.2
Fall 2016 2.1 1.73 10.75 3.11 1 2.62 3.6 7.09 3.14 8.36
Spring 2017 9.24 5.17 6.92 1.11 8.09 8.03 7.95 25.65 12.63 4.66
Fall 2017 6.23 7.58 7.62 2.4 0.71 5.88 0.44 3.31 0.65 6.48
Screening Value Fall 2017 ------------------------------
Fall 2014 165.8 31.2 -39 -46.9 -56.9 ----114.6 -331 -58.4 147.3
Spring 2015 203.1 86.4 -2.1 -50.8 -29.8 ----92.7 -16.5 -40.5 49.6
Fall 2015 163.6 24.8 -33.2 -82.4 -84.4 -26.4 -49.7 -33 -109.9 138.3
Spring 2016 121.2 45.9 -10 -56.4 -39.9 17.1 65 -24 -75.2 134.8
Fall 2016 187.2 -19.3 12.4 -37.5 -4.8 -23.1 -50.4 -25.9 -43.7 90.7
Spring 2017 100.5 34.8 -16.6 1.4 -36.6 2.3 -64.7 6 -3.7 157
Screening Value Spring 2017 ---1 1 1 1 1 1 1 1 0
Fall 2014 50.1 390 529 111 241 ---227 580 299 41.6
Spring 2015 45.6 346 464 101 195 ---179 475 308 39.5
Fall 2015 50.1 380 477 115 207 321 173 430 299 45.2
Spring 2016 57.6 437 490 130 223 361 193 672 306 51
Fall 2016 53.8 416 512 133 217 M1 335 178 602 309 47.3
Spring 2017 56.3 418 NS 138 NS 346 177 489 294 47.4
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 2 85.6 113 5 78.4 ---54.7 105 107 7.1
Spring 2015 1.96 74.2 113 4.19 76.2 ---49.8 101 119 6.5
Fall 2015 2.16 84.8 110 4.9 87.3 153 46.5 108 119 8.05
Spring 2016 2.16 74.8 140 4.99 102 160 59.3 91.4 21.8 7.72
Fall 2016 2 69.6 127 4.8 87.2 M1 156 50.7 114 122 7.44
Spring 2017 2.17 77.7 146 4.68 101 179 49.8 123 139 7.66
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 4,850 3,010 37,200 3,000 25,400 ---2,600 21,400 16,800 209
Spring 2015 720 3,380 34,400 5,010 22,600 ---1,880 19,800 19,800 276
Fall 2015 95 3,970 40,700 14,800 21,800 8,580 1,660 13,800 17,400 92
Spring 2016 252 5,730 26,800 11,400 21,500 11,700 946 15,000 16,800 136
Fall 2016 50 U 7,480 33,800 11,100 23,600 15,400 2,320 27,100 16,200 335
Spring 2017 800 12,600 33,400 11,600 24,900 13,000 1,840 19,100 16,400 172
Screening Value Spring 2017 ---3 3 3 3 3 0 3 3 0
Fall 2014 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U ---0.02 U 0.02 U 0.02 U 0.066
Spring 2015 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U ---0.02 U 0.02 U 0.02 U 0.066
Fall 2015 51.5 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 74.7
Spring 2016 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 0.02 U 62.4
Fall 2016 35.4 20 U 20 U 20 U 20 U 20 U 20 U 20 U 20 U 37.8
Spring2017 20 U 20 U, M1 20 U 20 U 20 U 20 U 20 U 20 U 20 U 20 U
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 4.4 32.1 3.5 8.6 2 U ---13.2 34.3 8.1 9.8
Spring 2015 4.56 32.9 4.87 11.4 2 U ---15.8 37.6 4.76 10.4
Fall 2015 3.99 31.1 4.26 10.5 2 U 21 16.4 36.5 3.26 10.3
Spring 2016 3.87 31.2 7.46 11 2 U 20.4 16 46.9 4.22 14.4
Fall 2016 3.82 27.6 4.37 11.2 2 U 16.7 14.7 15.7 3.21 11.4
Spring 2017 3.35 28.8 NS 11 NS 16 16.6 29.2 3.18 12.7
Screening Value Spring 2017 ---2 0 0 0 0 0 2 0 0
Fall 2014 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U ---0.1 U 0.1 U 0.12 0.1 U
Spring 2015 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U ---0.1 U 0.1 U 0.1 U 0.1 U
Fall 2015 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U
Spring 2016 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U
Fall 2016 0.1 U 0.1 U, M1 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U
Spring 2017 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U 0.1 U
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 8.7 30.5 38 26 44.7 ---27.4 75.7 15 5.3
Spring 2015 1 U 7.54 11.2 1 U 3.87 ---4 13.6 10.7 1 U
Fall 2015 1 U 5.12 7.12 1 U 3.12 8.62 3.31 10.7 7.94 1 U
Spring 2016 1 U 6.92 6.77 1 U 3.88 9.84 2.82 17 8 1 U
Fall 2016 1 U 5.41 7.69 1 U 4.32 10.8 2.47 14.6 9.1 1 U
Spring 2017 1 U 5.91 NS 1 U NS 10.2 M1 3.17 10.5 7.74 1 U
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 36,000 470,000 550,000 35,000 160,000 ---24,000 510,000 170,000 6,000
Spring 2015 54,000 110,000 450,000 20,000 100,000 ---12,000 370,000 79,000 5,300
Fall 2015 38,000 300,000 410,000 13,000 100,000 320,000 11,000 250,000 83,000 5,800
Spring 2016 52,000 420,000 490,000 13,000 200,000 130,000 11,000 460,000 110,000 6,500
Fall 2016 35,000 400,000 230,000 17,000 130,000 270,000 6,800 380,000 91,000 8,600
Spring 2017 58,000 380,000 NS 16,000 NS 280,000 7,800 230,000 56,000 5,500
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 0.0099 J 0.065 0.23 0.051 0.51 ---0.094 0.36 1.2 0.0099 J
Spring 2015 0.009 J 0.0087 J 0.26 0.037 0.24 ---0.048 0.16 0.94 0.008 U
Fall 2015 0.0063 J 0.023 0.18 0.019 0.18 0.029 0.027 0.078 0.27 0.0056 J
Spring 2016 0.0076 J 0.045 0.3 0.1 0.47 0.05 0.05 0.27 2.5 0.012
Fall 2016 0.008 0.044 0.13 0.15 0.52 0.21 0.016 0.41 0.28 0.011
Spring 2017 0.012 0.024 0.2 0.16 0.34 0.048 0.046 0.087 0.071 0.006
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 0.0022 J 0.23 0.52 0.099 1.6 ---0.2 0.18 0.46 0.0078 J
Spring 2015 0.0012 J 0.02 0.62 0.04 1.3 ---0.13 0.13 0.75 0.0015 J
TABLE 2. Fall 2017 EPA MNA SCREENING VALUES
umhos/cm
mg/L
deg C
Field pH
OLD LANDFILL, BUNCUMBE COUNTY, NORTH CAROLINA
Dissolved Oxygen
Field Specific Conductance
Field Temperature
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Std. Units
Alkalinity, as CaCO3
NTUTurbidity
ug/L
ug/LIron
Sulfide
Sulfate
Nitrogen, Nitrate
Carbon Dioxide
Chloride
mg/L
mg/L
mg/L
mg/L
mg/L
mg/L
ug/L
Ethene
m/VOxidation Reduction Potential (ORP)
Total Organic Carbon (TOC)
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Fall 2015 0.0011 J 0.061 0.23 0.023 0.42 0.03 0.017 0.025 0.057 0.0011 J
Spring 2016 0.0011 0.084 0.63 0.05 2 0.093 0.021 0.089 0.4 0.0034
Fall 2016 0.002 0.19 0.18 0.098 1.5 0.2 0.022 0.15 0.58 0.0025
Spring 2017 0.002 0.071 0.17 0.061 2.1 0.11 0.069 0.064 0.18 0.002
Screening Value Spring 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 1.3 1.4 1.7 1.2 1.3 ---1.1 1.3 1.5 1.5
Spring 2015 1.3 1.4 1.9 54 1.3 ---1.4 1.1 10 1.2
Fall 2015 1.1 1.3 1.4 1.2 1.5 1.3 1.9 1.2 4.5 1.2
Spring 2016 2 1.4 8.4 1.4 2.4 2 1.8 1.4 1.5 9
Fall 2016 2.5 2.4 3.4 2.1 3.3 2.6 2.3 4.1 8.3 2.5
Spring 2017 2 1.8 2.5 2 2.9 1.8 1.9 1.8 6.6 2.1
Screening Value Spring 2017 ---3 3 3 3 3 3 3 3 3
Fall 2014 0.18 1900 3200 840 3300 ---630 1400 2000 0.71
Spring 2015 0.074 140 3000 320 2100 ---310 370 1700 0.3
Fall 2015 0.066 440 900 160 760 47 37 170 240 0.057
Spring 2016 0.091 470 1900 330 5000 130 30 1400 1500 0.32
Fall 2016 0.073 1500 700 690 3100 370 79 1200 2200 0.32
Spring 2017 0.21 560 710 390 4700 150 330 350 810 0.19
Screening Value Spring 2017 ---3 3 3 3 0 0 0 3 0
Fall 2014 810 U 810 U 810 U 810 U 810 U ---810 U 810 U 810 U 810 U
Spring 2015 890 U 980 J 890 U 890 U 1100 J ---890 U 890 U 1300 J 890 U
Fall 2015 240 J 230 J 150 J 180 J 200 J 210 J 150 J 190 J 210 J 180 J
Spring 2016 2600 J 1900 J 200 J 2200 J 890 U 1000 J 1800 J 1700 J 1800 J 2100 J
Fall 2016 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U
Spring 2017 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U 330 U
Screening Value Spring 2017 ---2 2 2 2 2 2 2 2 2
Fall 2014 700 U 700 U 700 U 700 U 700 U ---700 U 700 U 700 U 700 U
Spring 2015 1400 U 1400 U 1400 U 1400 U 1400 U ---1400 U 1400 U 1400 U 1400 U
Fall 2015 160 J 66 J 81 J 130 J 120 J 120 J 50 U 130 J 110 J 110 J
Spring 2016 1400 U 1400 U 1400 U 1400 U 1400 U 1400 U 1400 U 1400 U 1400 U 1400 U
Fall 2016 55 U 55 U 180 J 55 U 55 U 360 J 55 U 1000 J 55 U 55 U
Spring 2017 55 U 55 U NS 55 U NS 55 U 55 U 55 U 55 U 55 U
Screening Value Spring 2017 ------------------------------
Fall 2014 660 U 660 U 660 U 660 U 660 U ---660 U 660 U 660 U 660 U
Spring 2015 730 U 730 U 730 U 730 U 730 U ---730 U 730 U 730 U 730 U
Fall 2015 34 J 27 J 19 J 32 J 30 J 28 J 14 J 27 J 29 J 33 J
Spring 2016 730 U 730 U 730 U 730 U 730 U 730 U 730 U 730 U 730 U 730 U
Fall 2016 52 U 52 U 240 J,B 52 U 52 U,B 490 J,B 52 U,B 52 U 52 U 52 U
Spring 2017 52 U 52 U 52 U 52 U 52 U 52 U 52 U 52 U 52 U 52 U
Screening Value Spring 2017 ------------------------------
Fall 2014 1 U 1.8 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2015 1 U 1.4 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2015 1 U 1.2 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2016 1 U 1.5 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2016 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2017 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2017 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Screening Value Fall 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 1 U 1.8 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2015 1 U 1.7 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2015 1 U 1.3 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2016 1 U 1.3 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2016 1 U 1.2 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2017 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2017 1 U 1.2 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Screening Value Fall 2017 ---2 0 0 0 0 0 0 0 0
Fall 2014 1 U 19.5 1 U 23.1 1 U 1 U 1 19.7 4.9 1 U
Spring 2015 1 U 22 1.1 23.1 1 U 1 U 1 U 18.2 4.1 1 U
Fall 2015 1 U 18.7 1 U 26.6 1 U 1 U 1 U 11.8 3.4 1 U
Spring 2016 1 U 20.3 1.1 19.4 1 U 1 U 1 U 13 3.5 1 U
Fall 2016 1 U 20.4 1 U 21.3 1 U 1 U 1 U 13.2 3.3 1 U
Spring 2017 1 U 23 1 U 22.6 1 U 1 U 1 U 9.8 3.7 1 U
Fall 2017 1 U 26.1 1 U 20.9 1.4 1 U 1 U 12.6 2.8 1 U
Screening Value Spring 2017 ---2 2 2 0 0 0 2 2 0
Fall 2014 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Spring 2015 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Fall 2015 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Spring 2016 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Fall 2016 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Spring 2017 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Fall 2017 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U 0.56 U
Screening Value Fall 2017 ---0 0 0 0 0 0 0 0 0
Fall 2014 1 U 2.7 1 U 1 U 2.2 1 U 1 U 3.4 1 U 1 U
Spring 2015 1 U 2.6 1 U 1 U 1.6 1 U 1 U 2.5 1 U 1 U
Fall 2015 1 U 3.1 1 U 1 U 1.6 1 U 1 U 2.4 1 U 1 U
Spring 2016 1 U 2.7 1 U 1 U 1.7 1 U 1 U 2.6 1 U 1 U
Fall 2016 1 U 2.8 1 U 1 U 1.8 1 U 1 U 2.6 1 U 1 U
Spring 2017 1 U 3.6 1 U 1 U 1.8 1 U 1 U 2.2 1 U 1 U
Fall 2017 1 U 4.6 1 U 1 U 1 U 1 U 1 U 2.3 1 U 1 U
Screening Value Fall 2017 ---2 0 0 0 0 0 2 0 0
Fall 2014 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2015 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2015 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2016 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2016 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Spring 2017 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Fall 2017 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U
Screening Value Fall 2017 ------------------------------
Fall 2014 1 U 1 U 4.5 1 U 1 U 1 U 1 U 3.8 6 1 U
Spring 2015 1 U 2.8 5.2 1 U 1 U 1 U 1 U 3.6 5.8 1 U
Fall 2015 1 U 1 U 4.2 1 U 1 U 1 U 2.7 1 U 4.1 1 U
Spring 2016 1 U 3.4 4.1 1 U 1.3 1 U 1.4 3.6 5 1 U
Fall 2016 1 U 2.8 4 1 U 1.2 1 U 1.7 4.1 3.8 1 U
Spring 2017 1 U 3.1 3.9 1 U 1.1 1 U 1.3 2.3 4 1 U
Fall 2017 1 U 3.6 3.6 1 U 1 U 1 U 1.2 2.1 4.1 1 U
Screening Value Fall 2017 ---2 2 0 2 0 2 2 2 0
Fall 2014 2 U 2 U 15 2 U 5.1 ---2 U 4.6 12.6 2 U
Spring 2015 14.2 5.2 11.1 4.75 3.3 ---2 2.53 5.85 4.9
Fall 2015 2 U 2 U 7.3 2 U 6.1 2 U 2 U 2 U 11.3 2 U
Spring 2016 2 U 2 U 5.32 2 U 4.79 2.51 2 U 4.59 4.89 2 U
Fall 2016 2 U,B2 2 U,B2 4.71 2 U,B2 4.41 3.81 2 U,B2 5.13 D6 3 B2 2 U
Spring 2017 2 U 2 U NS 2 U NS 5.2 2 U 2 U,B2 2 U,B2 2 U
Screening Value Spring 2017 ------------------------------
Fall 2014 25 U 36 29 25 U 25 U ---25 U 48 25 U 25 U
Spring 2015 25 U 30 44 25 U 25 U ---25 U 44 32 25
Fall 2015 25 U 25 U 25 U 25 U 25 U 25 U 25 U 25 U 25 U 25 U
Spring 2016 25 U 37 34 25 U 25 U 45 25 U 78 29 25 U
Fall 2016 25 U 36 31 250 25 U 38 25 U 63 43 25 U
Spring 2017 25 U 35 NS 25 U NS 51 25 U 52 35 25 U
Screening Value Spring 2017 ------------------------------
22 17 14 14 9 9 18 17 3
NOTES:
1. mg/L: milligrams per liter.
2. ug/L: micrograms per liter.
3. NTU: nephelometric turbidity units.
4. umhos/cm: micromhos per centimeter.
Ethane
Biological Oxygen Demand, 5 day (BOD)
Trichloroethene (TCE)
Hydrogen
Methane
Acetic Acid (Volatile Fatty Acid)
cis-1,2-Dichloroethene (DCE)
Butyric Acid (Volatile Fatty Acid)
Propionic Acid (Volatile Fatty Acid)
Tetrachloroethene (PCE)
Chemical Oxygen Demand (COD)
mg/L
mg/L
ug/L
nM
Vinyl chloride (VC)
1,1,1-Trichloroethane
Chloroethane
Sum of Screening Values
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
ug/L
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
1,1-Dichloroethene (DCE)ug/L Analytical Result
Analytical Result
Analytical Result
Analytical Result
Analytical Result
5. deg C: degrees Celsius.
6. --- = Parameter not analyzed.
7.U = Analyte concentration was below the laboratory detection limit (value shown).
8.I = Analyte concentration was between the laboratory detection limit and laboratory practical quantitation limit.
9.J = Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit10. M1 = Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS)
recovery.
Score Interpretation
0 to 5 Inadequate evidence for anaerobic biodegradation* of chlorinated organics
6 to 14 Limited evidence for anaerobic biodegradation* of chlorinated organics
15 to 20 Adequate evidence for anaerobic biodegradation* of chlorinated organics
>20 Strong evidence for anaerobic biodegradation* of chlorinated organics
*reductive dechlorination
Table 3. Interpretation of Points Awarded During Screening
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
APPENDIX A
SAMPLING FORMS
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
APPENDIX B
WELL CONDITION SUMMARY
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
APPENDIX C
CHAIN OF CUSTODY
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
APPENDIX D
STORMWATER DETECTIONS
Surface Water Detection Summary Report
Buncombe County Old Facility
From:09/01/2017 To:12/01/2017
Well ID Parameter Sample Date Result Flags Units
SW‐1
Barium, Total
10/10/2017 43.3 ug/L
Copper, Total
10/10/2017 5.3 ug/L
Dissolved Oxygen
10/10/2017 8.24 mg/L
trans‐1,4‐Dichloro‐2‐butene
10/10/2017 1 U,M1 ug/L
Turbidity ‐ Field
10/10/2017 91.78 NTU
Vanadium, Total
10/10/2017 7.2 ug/L
Zinc, Total
10/10/2017 24.5 ug/L
SW‐2
Barium, Total
10/10/2017 44 ug/L
Dissolved Oxygen
10/10/2017 7.88 mg/L
Turbidity ‐ Field
10/10/2017 79.49 NTU
Vanadium, Total
10/10/2017 7.4 ug/L
Zinc, Total
10/10/2017 24 ug/L
SW‐2A
Barium, Total
10/10/2017 31.4 ug/L
Dissolved Oxygen
10/10/2017 8.13 mg/L
Turbidity ‐ Field
10/10/2017 5.11 NTU
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 1 of 2
Well ID Parameter Sample Date Result Flags Units
SW‐3
Barium, Total
10/10/2017 92.2 ug/L
Dissolved Oxygen
10/10/2017 7.95 mg/L
Turbidity ‐ Field
10/10/2017 7.18 NTU
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 2 of 2
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
AP P E NDIX E
S TORMWATER EXCEEDANCES
Surface Water MCL Exceedance Summary Report
Buncombe County Old Facility
From:09/01/2017 To:12/01/2017
Well ID Parameter Sample Date Result Flags UnitsMCL
SW‐1
Turbidity ‐ Field 25
10/10/2017 91.78 NTU
SW‐2
Turbidity ‐ Field 25
10/10/2017 79.49 NTU
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 1 of 1
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
AP P E NDIX F
GROUNDWATER DETECTIONS
Groundwater Detection Summary Report
Buncombe County Old Facility
From:09/01/2017 To:12/01/2017
Well ID Parameter Sample Date Result Flags Units
MW 13‐132
1,1‐Dichloroethane
10/12/2017 2 ug/L
Barium, Total
10/12/2017 28 ug/L
Benzene
10/12/2017 1.2 ug/L
cis‐1,2‐Dichloroethene
10/12/2017 20.9 ug/L
Dissolved Oxygen
10/12/2017 0.83 mg/L
Turbidity ‐ Field
10/12/2017 2.4 NTU
MW 21‐21
1,1‐Dichloroethane
10/12/2017 7.5 ug/L
1,2‐Dichlorobenzene
10/12/2017 2 ug/L
1,4‐Dichlorobenzene
10/12/2017 8.1 ug/L
Barium, Total
10/12/2017 116 ug/L
Chlorobenzene
10/12/2017 7.8 ug/L
Chloroethane
10/12/2017 2.1 ug/L
cis‐1,2‐Dichloroethene
10/12/2017 12.6 ug/L
Cobalt, Total
10/12/2017 7 ug/L
Dissolved Oxygen
10/12/2017 0.71 mg/L
trans‐1,4‐Dichloro‐2‐butene
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 1 of 10
Well ID Parameter Sample Date Result Flags Units
MW 21‐21
trans‐1,4‐Dichloro‐2‐butene
10/12/2017 1 U,M1 ug/L
Turbidity ‐ Field
10/12/2017 3.31 NTU
Vinyl chloride
10/12/2017 2.3 ug/L
MW 21‐94
1,4‐Dichlorobenzene
10/12/2017 1.6 ug/L
Barium, Total
10/12/2017 49.2 ug/L
Chlorobenzene
10/12/2017 1.1 ug/L
Chloroethane
10/12/2017 4.1 ug/L
cis‐1,2‐Dichloroethene
10/12/2017 2.8 ug/L
Dissolved Oxygen
10/12/2017 1.75 mg/L
Nickel, Total
10/12/2017 8.3 ug/L
Turbidity ‐ Field
10/12/2017 0.65 NTU
MW 6‐192
1,1‐Dichloroethane
10/12/2017 1 ug/L
1,4‐Dichlorobenzene
10/12/2017 1.5 ug/L
Barium, Total
10/12/2017 67.3 ug/L
Chlorobenzene
10/12/2017 2.4 ug/L
Chloroethane
10/12/2017 1 ug/L
Dissolved Oxygen
10/12/2017 2.69 mg/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 2 of 10
Well ID Parameter Sample Date Result Flags Units
MW 6‐192
Turbidity ‐ Field
10/12/2017 7.62 NTU
MW‐12‐25
1,2‐Dichlorobenzene
10/11/2017 1.4 ug/L
1,4‐Dichlorobenzene
10/11/2017 3.3 ug/L
Barium, Total
10/11/2017 121 ug/L
Chlorobenzene
10/11/2017 5.1 ug/L
Dissolved Oxygen
10/11/2017 8.46 mg/L
Nickel, Total
10/11/2017 17.7 ug/L
Turbidity ‐ Field
10/11/2017 0.46 NTU
Zinc, Total
10/11/2017 14.2 ug/L
MW‐13‐35
1,2‐Dichlorobenzene
10/11/2017 8 ug/L
1,4‐Dichlorobenzene
10/11/2017 39.5 ug/L
Barium, Total
10/11/2017 191 ug/L
Benzene
10/11/2017 2.4 ug/L
Chlorobenzene
10/11/2017 9.8 ug/L
cis‐1,2‐Dichloroethene
10/11/2017 6.3 ug/L
Dissolved Oxygen
10/11/2017 6.2 mg/L
Nickel, Total
10/11/2017 5.9 ug/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 3 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐13‐35
Turbidity ‐ Field
10/11/2017 2.23 NTU
MW‐15
Barium, Total
10/16/2017 202 ug/L
Cadmium, Total
10/16/2017 2 U,D3 ug/L
Chromium, Total
10/16/2017 19.2 ug/L
Dissolved Oxygen
10/16/2017 5.79 mg/L
Lead, Total
10/16/2017 9.1 ug/L
Turbidity ‐ Field
10/16/2017 9.57 NTU
MW‐17‐137
Barium, Total
10/11/2017 26.1 ug/L
Dissolved Oxygen
10/11/2017 0.34 mg/L
Turbidity ‐ Field
10/11/2017 2.87 NTU
MW‐17‐310
Dissolved Oxygen
10/16/2017 1.27 mg/L
Turbidity ‐ Field
10/16/2017 12.32 NTU
MW‐17‐60
1,1‐Dichloroethane
10/11/2017 1.3 ug/L
Barium, Total
10/11/2017 24.2 ug/L
Dissolved Oxygen
10/11/2017 0.79 mg/L
Turbidity ‐ Field
10/11/2017 1.5 NTU
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 4 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐18‐78
1,1‐Dichloroethane
10/11/2017 1.3 ug/L
1,4‐Dichlorobenzene
10/11/2017 2.1 ug/L
Barium, Total
10/11/2017 61.4 ug/L
Chlorobenzene
10/11/2017 3.2 ug/L
cis‐1,2‐Dichloroethene
10/11/2017 1.4 ug/L
Dissolved Oxygen
10/11/2017 0.6 mg/L
Turbidity ‐ Field
10/11/2017 0.71 NTU
MW‐19‐110
Barium, Total
10/11/2017 11.6 ug/L
Chloroethane
10/11/2017 1.2 ug/L
Dissolved Oxygen
10/11/2017 0.63 mg/L
Turbidity ‐ Field
10/11/2017 0.44 NTU
MW‐19‐75
1,1‐Dichloroethane
10/11/2017 1.2 ug/L
1,4‐Dichlorobenzene
10/11/2017 4.9 ug/L
Barium, Total
10/11/2017 115 ug/L
Chlorobenzene
10/11/2017 4.4 ug/L
Dissolved Oxygen
10/11/2017 1.41 mg/L
Nickel, Total
10/11/2017 19.2 ug/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 5 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐19‐75
Turbidity ‐ Field
10/11/2017 5.88 NTU
MW‐2
Barium, Total
10/13/2017 25.1 ug/L
Dissolved Oxygen
10/13/2017 4.62 mg/L
Methapyrilene
10/13/2017 50 U,L2 ug/L
Methyl methanesulfonate
10/13/2017 5 U,L1 ug/L
Turbidity ‐ Field
10/13/2017 6.23 NTU
MW‐24‐160
Barium, Total
10/16/2017 14 ug/L
Dissolved Oxygen
10/16/2017 2.91 mg/L
Turbidity ‐ Field
10/16/2017 6.48 NTU
MW‐3
1,1‐Dichloroethane
10/13/2017 7.5 ug/L
1,4‐Dichlorobenzene
10/13/2017 7.8 ug/L
Barium, Total
10/13/2017 164 ug/L
Chlorobenzene
10/13/2017 2 ug/L
Chloroethane
10/13/2017 4.1 ug/L
cis‐1,2‐Dichloroethene
10/13/2017 9.1 ug/L
Cobalt, Total
10/13/2017 18.3 ug/L
Dissolved Oxygen
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 6 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐3
Dissolved Oxygen
10/13/2017 1.32 mg/L
Nickel, Total
10/13/2017 15.6 ug/L
Turbidity ‐ Field
10/13/2017 3.44 NTU
Vinyl chloride
10/13/2017 2.9 ug/L
MW‐4
1,1‐Dichloroethane
10/13/2017 15.6 ug/L
1,2‐Dichlorobenzene
10/13/2017 1.1 ug/L
1,4‐Dichlorobenzene
10/13/2017 9.9 ug/L
Barium, Total
10/13/2017 720 ug/L
Benzene
10/13/2017 1.1 ug/L
Cadmium, Total
10/13/2017 71.6 ug/L
Chlorobenzene
10/13/2017 3.2 ug/L
Chloroethane
10/13/2017 3.6 ug/L
Chromium, Total
10/13/2017 8.3 ug/L
cis‐1,2‐Dichloroethene
10/13/2017 26.1 ug/L
Cobalt, Total
10/13/2017 90.8 ug/L
Copper, Total
10/13/2017 61.9 ug/L
Dissolved Oxygen
10/13/2017 0.81 mg/L
Lead, Total
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 7 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐4
Lead, Total
10/13/2017 6.8 ug/L
Nickel, Total
10/13/2017 136 ug/L
Trichloroethene
10/13/2017 1.2 ug/L
Turbidity ‐ Field
10/13/2017 7.58 NTU
Vanadium, Total
10/13/2017 8.4 ug/L
Vinyl chloride
10/13/2017 4.6 ug/L
Zinc, Total
10/13/2017 138 ug/L
MW‐4A
1,2‐Dichlorobenzene
10/10/2017 6.1 ug/L
1,4‐Dichlorobenzene
10/10/2017 52.5 ug/L
Barium, Total
10/10/2017 779 ug/L
Chlorobenzene
10/10/2017 9.9 ug/L
Cobalt, Total
10/10/2017 37.9 ug/L
Dissolved Oxygen
10/10/2017 1.61 mg/L
Ethylbenzene
10/10/2017 2 ug/L
Lead, Total
10/10/2017 6.2 ug/L
Nickel, Total
10/10/2017 10.6 ug/L
o‐Xylene
10/10/2017 2.2 ug/L
Toluene
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 8 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐4A
Toluene
10/10/2017 2 ug/L
Turbidity ‐ Field
10/10/2017 8.98 NTU
Xylene (total)
10/10/2017 2.2 ug/L
MW‐5
1,4‐Dichlorobenzene
10/13/2017 5.4 ug/L
Barium, Total
10/13/2017 149 ug/L
Chlorobenzene
10/13/2017 9.5 ug/L
Chloroethane
10/13/2017 1.4 ug/L
Cobalt, Total
10/13/2017 9.3 ug/L
Dissolved Oxygen
10/13/2017 0.56 mg/L
Methapyrilene
10/13/2017 50 U,L2 ug/L
Methyl methanesulfonate
10/13/2017 5 U,L1 ug/L
Nickel, Total
10/13/2017 17.4 ug/L
Turbidity ‐ Field
10/13/2017 1.41 NTU
Zinc, Total
10/13/2017 22.3 ug/L
MW‐6
1,1‐Dichloroethane
10/12/2017 4.3 ug/L
1,4‐Dichlorobenzene
10/12/2017 4.2 ug/L
Barium, Total
10/12/2017 1340 ug/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 9 of 10
Well ID Parameter Sample Date Result Flags Units
MW‐6
Benzene
10/12/2017 1.2 ug/L
Chlorobenzene
10/12/2017 11.2 ug/L
Chloroethane
10/12/2017 3.6 ug/L
Dissolved Oxygen
10/12/2017 1.55 mg/L
Methapyrilene
10/12/2017 50 U,L2 ug/L
Methyl methanesulfonate
10/12/2017 5 U,L1 ug/L
Nickel, Total
10/12/2017 5.5 ug/L
Turbidity ‐ Field
10/12/2017 7.62 NTU
MW‐B
Barium, Total
10/11/2017 198 ug/L
cis‐1,2‐Dichloroethene
10/11/2017 5 ug/L
Dissolved Oxygen
10/11/2017 2.3 mg/L
Turbidity ‐ Field
10/11/2017 64.35 NTU
Vinyl chloride
10/11/2017 1.6 ug/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.
V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 2, 2018 Page 10 of 10
Solid Waste Services
Old Buncombe County Landfill Semi-Annual &
MNA Sampling Report
AP P E NDIX G
GROUNDWATER EXCEEDANCES
Groundwater MCL Exceedance Summary Report
Buncombe County Old Facility
From:10/01/2017 To:12/01/2017
Well ID Parameter Sample Date Result Flags UnitsMCL
MW 13‐132
Benzene 1
10/12/2017 1.2 ug/L
MW 21‐21
1,1‐Dichloroethane 6
10/12/2017 7.5 ug/L
Cobalt, Total 1
10/12/2017 7 ug/L
Vinyl chloride 0.03
10/12/2017 2.3 ug/L
MW‐13‐35
Benzene 1
10/11/2017 2.4 ug/L
MW‐15
Chromium, Total 10
10/16/2017 19.2 ug/L
MW‐3
1,1‐Dichloroethane 6
10/13/2017 7.5 ug/L
Cobalt, Total 1
10/13/2017 18.3 ug/L
Vinyl chloride 0.03
10/13/2017 2.9 ug/L
MW‐4
1,1‐Dichloroethane 6
10/13/2017 15.6 ug/L
Barium, Total 700
10/13/2017 720 ug/L
Benzene 1
10/13/2017 1.1 ug/L
Cadmium, Total 2
10/13/2017 71.6 ug/L
Cobalt, Total 1
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 16, 2018 Page 1 of 2
Well ID Parameter Sample Date Result Flags UnitsMCL
MW‐4
Cobalt, Total 1
10/13/2017 90.8 ug/L
Nickel, Total 100
10/13/2017 136 ug/L
Vanadium, Total 0.3
10/13/2017 8.4 ug/L
Vinyl chloride 0.03
10/13/2017 4.6 ug/L
MW‐4A
Barium, Total 700
10/10/2017 779 ug/L
Cobalt, Total 1
10/10/2017 37.9 ug/L
MW‐5
Cobalt, Total 1
10/13/2017 9.3 ug/L
MW‐6
Barium, Total 700
10/12/2017 1340 ug/L
Benzene 1
10/12/2017 1.2 ug/L
MW‐B
Vinyl chloride 0.03
10/11/2017 1.6 ug/L
U = Indicates that the compound was analyzed for but not detected.
BDL = Indicates that the compound was analyzed for but not detected.
I = The reported value is between the laboratory method detection limit and the laboratory practical quatitation limit.V = Indicates the anlyte was detected in both the sample and the associated method blank.
Friday, February 16, 2018 Page 2 of 2