8003_Rowan_MSWLF_CDLF_PTC_WQMP_FID1706002_20220812

Rowan County Landfill I Phase V Construction Permit Application
6 — Water Quality Monitoring Plan
6 — Water Quality Monitoring
Plan

Rowan County Landfill I Phase V Construction Permit Application ���
6 — Water Quality Monitoring Plan
This page intentionally left blank.

�Z0 WAN
9Ap'�rHEw� O`y

This page intentionally left blank.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Contents
Contents
1 Introduction....................................................................................................................... 1
1.1
Site Description................................................................................................
1
1.2
Site Geology and Hydrogeology.......................................................................
2
2 Groundwater Monitoring System..................................................................................... 2
2.1
Monitoring Well Network...................................................................................
2
2.2
Monitoring Well Construction............................................................................
4
2.3
Monitoring Well Development...........................................................................
4
2.4
Maintenance and Recordkeeping.....................................................................
5
2.5
Monitoring Well Decommissioning....................................................................
5
3 Groundwater Monitoring Program...................................................................................
5
3.1
Detection Monitoring.........................................................................................
6
3.1.1
Sampling Frequency.........................................................................................
6
3.1.2
Establishment of Background Data...................................................................
6
3.1.3
Evaluation of Detection Monitoring Data...........................................................
6
3.2
Assessment Monitoring....................................................................................
7
3.3
MSW Unit.........................................................................................................
7
3.3.1
C&D Unit..........................................................................................................
8
3.4
Evaluation and Reporting of Monitoring Data ....................................................
9
4 Groundwater Sampling Methodology..............................................................................
9
4.1
Sample Collection.............................................................................................
9
4.2
Sampling Frequency.........................................................................................
9
4.3
Static Water Elevations.....................................................................................
9
4.3.1
Well Evacuation...............................................................................................10
4.4
Sample Preservation and Handling..................................................................13
4.5
Chain -of -Custody Program..............................................................................13
4.5.1
Sample Labels.................................................................................................13
4.5.2
Sample Seal....................................................................................................13
4.5.3
Field Logbook..................................................................................................13
4.5.4
Chain -of -Custody Record................................................................................14
4.6
Analytical Procedures......................................................................................14
4.7
Quality Assurance and Quality Control Program..............................................15
5 Statistical Methods..........................................................................................................16

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Contents
6 Surface Water Monitoring (Rule.0602)...........................................................................16
7 References.......................................................................................................................17
8 Professional Certification................................................................................................19
Tables
Table 1 Summary of Groundwater Monitoring Well Construction Information
Figures
Figure 1 Water Quality Monitoring Plan
Figure 2 Typical Groundwater Monitoring Well Schematic
Appendices
Appendix A — Regulatory Requirements

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Introduction
1 Introduction
This Water Quality Monitoring Plan (WQMP) was initially prepared by Golder Associates NC,
Inc. (Golder) for the Phase IV expansion of the Rowan County Landfill, Permit No. 80-03,
located in Rowan County, North Carolina (NC). Under contract with Rowan County, HDR
Engineering of the Carolinas, Inc. (HDR) conducted a hydrogeologic investigation of the
proposed Phase V cell of the landfill in 2021 and 2022. The hydrogeologic investigation included
installation of six groundwater monitoring wells that at the time of installation, were intended to
be re -purposed as compliance monitoring wells under this WMQP. Since HDR designed and
installed the wells, HDR has prepared this WQMP. However, it is our understanding that Golder
will be responsible for implementation of this WQMP. Thus, HDR has not changed record
keeping, sampling, statistics, or reporting means and methodology from the previously approved
WQMP prepared by Golder and dated April 12, 2021.
This WQMP will serve as a guidance document for collecting and analyzing groundwater and
surface water samples, evaluating the associated analytical results, and monitoring for any
potential releases to the uppermost aquifer from the Rowan County Landfill. The WQMP
complies with NC Solid Waste Management Regulations (SWMR) Subchapter 13B .1630
through .1637 as part of the updated permit application for the active municipal solid waste
(MSW) facility and section .0544 through .0545 for the closed construction and demolition
(C&D) facility. The C&D facility closed in 2008. This Plan also addresses the requirements for
surface water monitoring specified in Rule .0602. The pertinent geologic and hydrogeologic
characteristics of the site, as described in the Design Hydrogeologic Report for the Cell IV
expansion of the Rowan County Landfill, prepared by Buxton Environmental, Inc. (September
2011), Design Hydrogeologic Report for the Phase V expansion of the Rowan County Landfill
by HDR (August 2022), and previous water quality monitoring reports prepared by Golder are
summarized below.
1.1 Site Description
The location of the facility is shown on the inlay on Figure 1. As presented, the Rowan County
solid waste facility is located approximately 1.5 miles southeast of the town of Woodleaf on
Campbell Road, Rowan County, NC. The landfill facility covers approximately 375 acres of land
and is bounded to the north by Campbell Road, Second Creek and woodlands to the south and
east, and wooded, residential and agricultural properties to the west. Surrounding land use is
primarily rural residential, agricultural, or undeveloped and wooded. Access to the facility is via
the drive off Campbell Road to the north. The facility is comprised of an active Subtitle D MSW
unit, a closed C&D unit, and a closed land clearing inert debris (LCID) unit (Figure 1).
Topographic elevations outside of the existing waste areas at the facility range from
approximately 758 feet above mean sea level (AMSL) east of the existing scale house to
approximately 640 feet AMSL at the edge of Second Creek along the southern property
boundary. Elevations within the existing waste area range from 798 feet AMSL in Cell/Phase I to
680 feet AMSL at the southeast corner of Cell/Phase IV. Surface drainage from the landfill and
surrounding areas is directed by one of the two main drainage features that drain into Second
Creek, which flows from the southwest to the northeast (S&ME October 2005). Groundwater

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring System
monitoring at the facility was initiated in December 1989 under the Detection Monitoring
Program for MSW landfills.
1.2 Site Geology and Hydrogeology
Geologically, the facility is located within the Charlotte Belt of the Piedmont Physiographic
Province of NC (NCGS 1985). The Charlotte Belt is composed of Precambrian and Paleozoic
bedrock, which is dominantly plutonic with plutons ranging from granite to gabbro. The oldest
rocks in the Charlotte Belt are mafic gneisses, amphibolites, metagabbros, and metavolcanic
rocks, with lesser amounts of biotite gneiss, granitic gneiss, mica schist, quartzite, and
ultramafic rocks. Mica schists and mica hornblende gneisses locally have been intruded by
granite. The rocks underlying the facility consist of mostly diorite, gabbro, and granite (NCGS
1985).
The uppermost groundwater beneath the facility is present in a shallow, unconfined aquifer
comprised of partially weathered, fractured, meta -volcanic rock. Groundwater occurs at depths
ranging from near ground surface in valleys to more than 100 feet below grade on steep hills
(S&ME October 2005). Depth -to -water measurements obtained during the January 2020
monitoring event were used to prepare a groundwater surface contour map of Cells/Phases I -IV,
as presented on Figure 1 (Golder March 2020).
As presented, the groundwater flow in the uppermost aquifer beneath the site is to the
southeast toward Second Creek. The groundwater surface contour map and interpreted flow
directions are consistent with previously submitted groundwater surface contour maps for this
facility.
Based on calculations from Golder, the average estimated linear groundwater flow velocity for
the subsurface at the facility (Cell/Phase I -IV) is around 300 feet per year, which ranges from
approximately 169 feet/year in the MSW area to approximately 509 feet/year in the C&D area
(Golder August 2021). The range of groundwater flow is expected to vary depending on the
topographic and hydrogeologic conditions. This was most notable in the Phase V area where
the average estimated liner flow was 21 feet/year (HDR August 2022).
2 Groundwater Monitoring System
The following sections present the proposed monitoring well network for the active MSW landfill
unit and the closed C&D landfill unit, along with specifications associated with installing,
developing, maintaining, and decommissioning facility monitoring wells. The proposed well
locations are selected to yield groundwater samples representative of the conditions in the
uppermost aquifer underlying the facility, and to monitor for potential releases from each landfill
unit. Groundwater monitoring wells shall be sampled during the active life of the landfill as well
as the post -closure period, in accordance with Rule .1630 and .0544 of the NC SWMR.
2.1 Monitoring Well Network
The proposed monitoring network, as shown on Figure 1, is designed to monitor for potential
releases to the uppermost aquifer from the MSW and C&D units. Existing monitoring wells MW-

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan
Groundwater Monitoring System
9 and MW-16 are the background compliance wells for the MSW unit, and are located
upgradient of the MSW unit. Similarly, well MW-17 is the background compliance well for the
C&D unit. The need for additional background wells will be evaluated based on analytical
results, if appropriate.
The active MSW landfill monitoring network is currently comprised of 13 downgradient
monitoring wells, which monitor the uppermost aquifer beneath the facility: MW-1, MW-7, MW-
11, MW-12, MW-13, MW-20, MW-23, MW-23A, MW-24R, MW-25, MW-26, MW-27, and MW-
28R. The following monitoring wells will be added to the network to monitor the Phase V
expansion area: MW-30, MW-31, MW-32, MW-33, and MW-34. In addition, monitoring wells
MW-6, MW-23, MW-27A, and MW-28 are monitored during each semi-annual sampling event
for water levels only.
Note that well MW-26 is located within the Phase V expansion area and will be monitored until
commencement of construction of Phase V, at which time the well will be abandoned in
accordance with Section 2.5 of this plan.
A French Drain that lies within the Phase III footprint is also monitored. Two downgradient
monitoring wells (MW-18R and MW-19) are sampled to monitor the C&D landfill. Additional
downgradient wells will be added to the monitoring network, if needed, as future phases are
constructed. Refer to the table below for a summary of proposed monitoring wells.
Monitoring
Point Identification Monitoring Well Location
MSW Facility
MW-9
Upgradient
MW-16
Upgradient
MW-1
Downgradient
MW-7
Downgradient
MW-11
Downgradient
MW-12
Downgradient
MW-13
Downgradient
MW-20
Downgradient
MW-23
Downgradient
MW-24R
Downgradient
MW-25
Downgradient
MW-26*
Downgradient
MW-27
Downgradient
MW-28R
Downgradient
MW-30
Downgradient
MW-31
Downgradient
MW-32
Downgradient
MW-33
Downgradient
MW-34
Downgradient
French Drain
Downgradient
MW-6
Water Levels Only
MW-23A
Water Levels Only
MW-27A
Water Levels Only
MW-28
Water Levels Only
C&D Facility
MW-17
Upgradient
MW-18R
Downaradient

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring System
Monitoring Point Identification Monitoring Well Location
MW-19 Downgradient
- MW-26 to be decommissioned prior to Phase V construction.
2.2 Monitoring Well Construction
The well completion details for the existing groundwater compliance monitoring wells are
included in Table 1. Drilling and installation of any new monitoring wells will be performed in
accordance with the specifications outlined in 15A NCAC Subchapter 2C, Section .0100. A
typical groundwater monitoring well schematic is provided as Figure 2. Further guidance is
provided in the Draft and US EPA Region 4 Science and Ecosystem Support Division (SESD)'s
Design and Installation of Monitoring Wells (February 2008). Drilling and well installation
activities will be conducted in under the supervision of a licensed geologist. New wells will be
located by a licensed surveyor to within +0.1 foot on the horizontal plane and +0.01 foot
vertically in reference to existing survey points. A boring log, well construction log, groundwater
monitoring network map, well installation certification, and survey data will be submitted to the
Solid Waste Section (SWS) upon completion.
2.3 Monitoring Well Development
Newly constructed wells will be developed to remove particulates present in the well due to
construction activities, and to interconnect the well with the aquifer. Groundwater monitoring
wells will be developed to reduce turbidity, as outlined in US EPA Region 4 Science and
Ecosystem Support Division (SESD)'s Groundwater Sampling Operating Procedure (April
2017). Development of new monitoring wells will be performed no sooner than 24 hours after
well construction. Wells may be developed with disposable bailers, a well development pump, or
other approved method. A surge block may be used as a means of assessing the integrity of the
well screen and riser. In the event a pump is employed, the design of the pump will be such that
any groundwater that has come into contact with air is not allowed to drain back into the well. In
general, each well will be developed until sediment -free water with stabilized field parameters
(i.e., temperature, pH, and specific conductance) is obtained.
Well development equipment (i.e., bailers, pumps, surge blocks) and any additional equipment
that contacts subsurface formations will be decontaminated prior to on -site use, between
consecutive on -site uses, and/or between consecutive well installations.
The purge water will be disposed of on the ground surface at least 10 feet downgradient of the
monitoring well, unless field characteristics suggest the water will need to be disposed of
otherwise. If field characteristics suggest, the purge water will be containerized and disposed of
by other approved means.
Samples withdrawn from the facility's monitoring wells should be clay- and silt -free; therefore,
existing wells may require re -development from time to time based upon observed turbidity
levels during sampling activities. If re -development of an existing monitoring well is required, it
will be performed in a manner similar to that used for a new well.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring Program
2.4 Maintenance and Recordkeeping
The monitoring wells will be used and maintained in accordance with design specifications
throughout the life of the monitoring program. Routine well maintenance will include inspection
and correction/repair of, as necessary, identification labels, concrete aprons, locking caps and
locks, and access to the wells. Should it be determined that background or compliance
monitoring wells no longer provide samples representative of the quality of groundwater passing
the relevant point of compliance, the SWS will be notified. The owner will re-evaluate the
monitoring network, and provide recommendations to the SWS for modifying, rehabilitating,
decommissioning, or installing replacement or additional monitoring wells, as appropriate.
Laboratory analytical results will be submitted to the SWS semi-annually. Analytical data,
calculations, and other relevant groundwater monitoring records will be kept throughout the
active life of the facility and the post -closure care period, including notices and reports of any
NC (2L) Groundwater Protection Standard or Interim Maximum Allowable Concentration (IMAC)
exceedances, re -sampling notifications, and re -sampling results.
2.5 Monitoring Well Decommissioning
Piezometers and wells installed within the MSW waste footprint will be properly
decommissioned in accordance with the procedures for permanent decommissioning, as
described in 15A NCAC 2C Rule .0113(b). The piezometers and wells will be progressively
decommissioned as necessary to complete landfill construction activities. The piezometers and
wells that are within the proposed footprint will be overdrilled to remove well construction
materials, and then grouted with a cement-bentonite grout. Other piezometers and wells that will
potentially interfere with clearing and construction activities will be grouted in place without
overdrilling with a cement-bentonite grout and removing surface features, such as concrete
aprons, protective casings, and stick-ups. In each case, the bentonite content of the cement-
bentonite grout shall be approximately 5%, and a tremie pipe will be used to ensure that grout is
continuously placed from the bottom of the borehole/monitoring well upward.
If a monitoring well becomes unusable during the monitoring period of the landfill, the well will
be decommissioned in accordance with the procedures described above. Approval from the
SWS will be obtained prior to decommissioning any monitoring well.
For each monitoring well decommissioned, the following information will be provided to the SWS
in a report sealed by a licensed geologist: the monitoring well name, a description of the
procedure by which the monitoring well was decommissioned, the date when the monitoring
well was considered to be taken out of service, and the date when the monitoring well was
decommissioned.
3 Groundwater Monitoring Program
The following sections present the monitoring requirements for this facility.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring Program
3.1 Detection Monitoring
Groundwater samples for the MSW unit will be analyzed semi-annually for the Appendix I list of
constituents as defined in Rule .1633 (i.e., Detection Monitoring Program), during the life of the
facility and the post -closure care period. Groundwater samples for the closed C&D unit will be
analyzed semi-annually for the constituents listed in NC Appendix I plus mercury, chloride,
manganese, sulfate, iron, specific conductance, pH, temperature, alkalinity, and total dissolved
solids (TDS) as defined in Rule .0544(b)(1)(D) under Detection Monitoring, during the post -
closure care period. The current SWS analyte list is included in Appendix A. Note that analytical
methods should be consistent with SWS-846 approved methodology.
3.1.1 Sampling Frequency
Groundwater samples will be collected semi-annually and analyzed for constituents outlined
above along with required field parameters, including but not limited to, pH, conductivity, and
temperature. If either the MSW or C&D units must progress to Assessment Monitoring,
notification and sampling will be conducted according to the schedule specified in Rules .1634
and .0545.
3.1.2 Establishment of Background Data
During each phase of facility development, a minimum of four independent groundwater
samples will be collected from the newly installed monitoring wells (other than replacement
wells) or as specified in the permit. Samples collected from these wells will be analyzed for the
detection monitoring constituents. The intent of background sampling is to collect data to more
accurately reflect the natural fluctuations that may occur with these constituents. The data will
be submitted to the SWS after completion of the fourth background sampling event.
3.1.3 Evaluation of Detection Monitoring Data
During the Detection Monitoring Program, the reported constituent concentrations from
downgradient compliance wells will be compared to the groundwater protection standards or
GPS (i.e., NC 2L Standards and IMACs). If inorganic Detection Monitoring parameters are
determined to be above the groundwater protection standards, the reported constituent
concentrations from downgradient compliance wells will be statistically compared to the site -
specific background standard using approved statistical procedures in .1632(g), (h) and (i) to
determine if a release has occurred.
If a constituent is detected above both its groundwater quality standard and its site -specific
background standard, the following procedures will be followed for the MSW unit:
Notify SWS within 14 days of this finding, report to the Division and place a notice in the
operating record indicating which constituents have exceeded groundwater protection
standards.
2. Within 90 days, establish an Assessment Monitoring Program meeting the requirements
of Rule .1634 or .0545 as appropriate, except as discussed below.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring Program
If a constituent is detected above both its groundwater quality standard and its site -specific
background standard at the C&D unit, the following procedures will be followed in accordance
with Rule .0545:
1. Within 30 days, submit an Assessment Monitoring Work Plan to the SWS for review.
2. Upon the SWS's approval of the Assessment Monitoring Work Plan, initiate Assessment
Monitoring.
The data may be evaluated within 90 days following the exceedance, and wells may be
resampled if appropriate, to determine if the concentration resulted from an error in sampling,
analysis, statistical evaluation, or natural variation in groundwater quality; or a source other than
the facility. If it can be demonstrated that one of these factors occurred, a report [an Alternate
Source Demonstration (ASD)] certified by a licensed geologist or engineer will be submitted to
the SWS within 90 days of identifying the suspect GPS and/or statistical increase. A copy of this
report will be placed in the operating record. If the SWS approves the ASD, the Detection
Monitoring Program will be resumed with the required semi-annual sampling and analysis. If
SWS does not accept the demonstration, Assessment Monitoring will be initiated.
3.2 Assessment Monitoring
Assessment Monitoring is required for either waste unit whenever one or more detection
monitoring constituents are detected at concentrations that exceed the GPS and no source of
error or naturally occurring condition can be identified. If an error or naturally occurring condition
cannot be identified Assessment Monitoring will be initiated at the MSW and C&D units as
described below.
3.3 MSW Unit
In accordance with Rule .1634. within 90 days of triggering the Assessment Monitoring
Program, and annually thereafter, groundwater will be sampled for analysis of the NC Appendix
II list of constituents. A minimum of one groundwater sample will be collected from each
downgradient well and submitted for analysis during each Assessment Monitoring sampling
event. However, the NCSWMR allow for petitions to the SWS for an appropriate subset of wells
or a reduction in the NC Appendix 11 sampling list.
If any NC Appendix II constituents are detected in groundwater from the downgradient wells, a
minimum of four independent samples will be collected from each background and
downgradient well to establish background concentrations for the detected NC Appendix II
constituents.
Within 14 days after receipt of the sampling analytical data, a report identifying the detected NC
Appendix II constituents will be submitted to the SWS, and a notice will be placed in the
operating record. Background concentrations of any detected NC Appendix II constituents will
be established and reported to the SWS.
Within 90 days, and on at least a semi-annual basis thereafter, the wells will be sampled and
analyzed for the NC Appendix I list plus any additional detected Appendix 11 constituents. An

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Monitoring Program
analytical results report of each sampling event will be submitted to the SWS and placed in the
facility operational record.
The SWS will determine whether site -specific GPS will be established for the facility and may
specify a more appropriate alternate sampling frequency for repeated sampling and analysis for
the full set of NC Appendix II constituents. Groundwater monitoring will continue in one of two
ways, based on the results of the Assessment Monitoring statistical analyses:
1. If the NC Appendix II constituents are at or less than approved GPS for two consecutive
sampling events, the facility may resume Detection Monitoring with the approval of SWS.
2. If one or more NC Appendix II constituents are detected at statistically significant
concentrations in excess of the approved GPS, and no source of error can be identified,
within 14 days of determination the SWS will be notified, a notice will be placed in the
operating record, and all appropriate local government officials will be notified. The
facility will proceed to a characterization of the nature and extent of the release (Rule
.1634(f)(1)). Next, the facility operator will initiate an Assessment of Corrective Measures
and corrective action and proceed according to Rules .1635 through .1637. If the facility
proceeds to corrective action, a Corrective Action Monitoring Plan will be submitted to
the SWS with the Corrective Action Plan.
3.3.1 C&D Unit
After triggering Assessment Monitoring, water quality monitoring will be performed in
accordance with the approved Assessment Monitoring Work Plan, which will include at a
minimum one sampling event where monitoring wells are sampled for NC Appendix II
constituents. A minimum of one groundwater sample will be collected from each downgradient
groundwater monitoring well and submitted for analysis
If any Appendix II constituents are detected in groundwater from the downgradient wells, a
minimum of 4 independent samples will be collected from each background and downgradient
groundwater monitoring well to establish background concentrations for the detected NC
Appendix II constituents.
After approval of the Assessment Monitoring Work Plan and completion of an initial NC
Appendix II sampling event, and on at least a semi-annual basis thereafter, the wells will be
sampled and analyzed for the Appendix I list plus any additional detected Appendix 11
constituents. An analytical results report of each sampling event will be submitted to the SWS
and placed in the facility operational record.
The SWS will determine whether site -specific GPS will be established for the facility and may
specify a more appropriate alternate sampling frequency for repeated sampling and analysis for
the full set of NC Appendix II constituents. Groundwater monitoring will continue in one of two
ways, based on the results of the assessment monitoring statistical analyses:
If the NC Appendix 11 constituents are at or less than background values using approved
statistical procedures for two consecutive sampling events, the facility may resume
detection monitoring with the approval of SWS.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
2. If one or more NC Appendix II constituents are detected at statistically significant
concentrations in excess of the approved GPS, and no source of error can be identified,
a notice will be placed in the operating record, and all appropriate local government
officials will be notified. The facility will proceed to a characterization of the nature and
extent of the release. If the facility proceeds to corrective action, an Assessment of
Corrective Measures will be submitted to the SWS and a remedy will be selected.
3.4 Evaluation and Reporting of Monitoring Data
Reports will be submitted electronically with analytical and field data submitted in the required
formats, and be accompanied by the required Environmental Monitoring Form, which will be
signed and sealed by a licensed geologist in the State of NC. A copy of this form is also
included in Appendix A. The reported constituent concentrations from downgradient compliance
wells will be compared to background values, NC 2L Standards and/or IMACs using a value -to -
value comparison. Any exceedances will be identified in the semi-annual submittals to the SWS
and 14-day notifications for new exceedances submitted for the MSW facility.
4 Groundwater Sampling Methodology
Groundwater samples will be collected in accordance with Rules .1632 or .0544/.0545 and this
Water Quality Monitoring Plan. The most current US EPA Region 4 SESD guidance will be
utilized for sampling, as applicable, including: Management of Investigation Derived Waste (May
2020), Field Equipment Cleaning and Decontamination (June 2020), and Groundwater
Sampling Operating Procedure (April 2017). Procedures for well purging, sample withdrawal,
decontamination methods, and chain -of -custody procedures are outlined below. Field parameter
measurements will be submitted electronically to the SWS in a format consistent with SWS
policies.
4.1 Sample Collection
The procedures for collecting groundwater samples are presented below. The background wells
for the MSW unit (MW 9 and MW-16) and C&D unit (MW-17) will be sampled first, followed by
the downgradient compliance wells. The downgradient wells will be sampled so that the most
contaminated well, if one is identified from the previous sampling event, will be sampled last.
4.2 Sampling Frequency
The above -mentioned samples will be collected on a semi-annual basis throughout the life of
the facility and post -closure care period.
4.3 Static Water Elevations
The static groundwater level will be measured with an electronic water level indicator, to the
nearest 0.01 foot, in each well prior to sampling. Static groundwater elevations will be calculated
from groundwater depth measurements and top of casing elevations. A reference point will be
marked on the top of casing of each well to ensure the same measuring point is used each time
static groundwater levels are measured.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
If a monitoring well contains a dedicated pump, the depth -to -water shall be measured without
removing the pump. Depth -to -bottom measurements should be taken from the well construction
data and updated when pumps are removed for maintenance.
4.3.1 Well Evacuation
Existing monitoring wells in the current compliance network contain dedicated bladder pumps
and pumps will be installed in any new wells. The preferred well evacuation and sampling
procedure for the site is a low -flow purge (micropurge) and sample methodology and procedure.
Standard evacuation and sample methodology and procedures are also outlined below based
on the US EPA Groundwater Sampling Operating Procedure (April 2017), as an alternate.
4.3.1.1 LOW -FLOW PROCEDURES
Monitoring wells may be purged and sampled using the low -flow sampling method in
accordance with the procedures presented below.
Depth -to -water measurements will be obtained using an electronic water level indicator capable
of recording the depth to an accuracy of 0.01 foot. A determination of whether or not the water
table is located within the screened interval of the well will be made. If the water table is not
within the screened interval, the amount of drawdown that can be achieved before the screen is
intersected will be calculated and the amount of drawdown should be minimized to keep the
screen from being exposed. The water level should not fall within 1 foot of the top of the well
screen. If the water table is within the screened interval, total drawdown should not exceed 1
foot so as to minimize the amount of aeration and turbidity.
If the purging equipment is non -dedicated, the equipment will be lowered into the well, taking
care to minimize the disturbance to the water column. If conditions (i.e., water column height
and well yield) allow, the pump will be placed in the uppermost portion of the water column
(minimum of 18 inches of pump submergence is recommended).
The minimum volume/time period for obtaining independent water quality parameter
measurements (WQPM) will be determined. The minimum volume/time period is determined
based on the stabilized flow rate and the amount of volume in the pump and the discharge
tubing (alternatively, the volume of the flow cell can be used, provided it is greater than the
volume of the pump and discharge tubing). Volume of the bladder pump should be obtained
from the manufacturer. Volume of the discharge tubing is as follows:
• 3/8-inch inside diameter tubing: 20 milliliters per foot
• 1/4-inch inside diameter tubing:10 milliliters per foot
• 3/16-inch inside diameter tubing: 5 milliliters per foot
Once the volume of the flow -cell or the pump and the discharge tubing has been calculated, the
well purge will begin. The flow rate should be based on historical data for that well (if available)
and should not exceed 500 milliliters per minute. The initial round of WQPM should be recorded
and the flow rate adjusted until drawdown in the well stabilizes. Water levels should be
measured periodically to maintain a stabilized water level. If the purge rate has been reduced to
100 milliliters or less and the head level in the well continues to decline, the required water
10

Rowan County Landfill i Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
samples should be collected following stabilization of the WQPM, based on the criteria
presented below.
If neither the head level nor the WQPM stabilize, a passive sample should be collected. Passive
sampling is defined as sampling before WQMP have stabilized if the well yield is low enough
that the well will purge dry at the lowest possible purge rate (generally less than 100 milliliters
per minute).
WQPM stabilization is defined as follows: pH (+/- 0.2 S.U.), conductance (+/- 5% of reading),
temperature (+/- 0.2°Celsius or C), and dissolved oxygen or DO [+/- 20% of reading or 0.2
milligrams per liter or mg/L (whichever is greater)]. Oxidation reduction potential (ORP) will be
measured and ideally should also fall within +/- 10 mV of reading; however, this is not a required
parameter. At a minimum, turbidity measurements should also be recorded at the beginning of
purging, following the stabilization of the WQPM, and following the collection of the samples.
The optimal turbidity range for micropurging is 10 Nephelometric Turbidity Units (NTU) or less.
Turbidity measurements above 10 NTU are generally indicative of an excessive purge rate or
natural conditions related to excessive fines in the aquifer matrix.
Stabilization of the WQPM should occur in most wells within five to six rounds of measurements.
If stabilization does not occur following the removal of a purge volume equal to three well
volumes, a passive sample will be collected.
The direct -reading equipment used at each well will be calibrated in the field according to the
manufacturer's specifications prior to each day's use and checked at a minimum at the end of
each sampling day. Calibration information should be documented in the instrument's calibration
logbook and the field book.
Each well is to be sampled immediately following stabilization of the WQPM. The sampling flow
rate must be maintained at a rate that is less than or equal to the purging rate. For volatile
organic compounds (VOCs), lower sampling rates (100 - 200 milliliters/minute) should be used.
Final field parameter readings should be recorded at the time of sampling.
4.3.1.2 STANDARD EVACUATION PROCEDURES
Monitoring wells may be evacuated with a submersible pump or a disposable bailer. If the pump
is used for multiple wells, it and any other non -dedicated equipment will be decontaminated
before use and between use at each well.
A low -yield well (one that yields less than 0.5 gallon per minute) will be purged so that water is
removed from the bottom of the screened interval. Low -yield wells will be evacuated to dryness
once. However, at no time will a well be evacuated to dryness if the recharge rate causes the
formation water to vigorously cascade down the sides of the screen and cause an accelerated
loss of VOCs. Upon recharging of the well and no longer than 24 hours from completing the
purge, the first sample will be field-tested for pH, temperature, specific conductivity, and
turbidity. Samples will then be collected and containerized in the order of the volatilization
sensitivity of the target constituents.
11

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
A high -yield well (one that yields 0.5 gallon per minute or more) will be purged so that water is
drawn down from above the screen in the uppermost part of the water column to ensure that
fresh water from the formation will move upward in the screen. If a pump is used for purging, a
high -yield well should be purged at less than 4 gallons per minute to prevent further well
development.
A minimum of three casing volumes will be evacuated from each well prior to sampling. An
alternative purge will be considered complete if the monitoring well goes dry before removing
the calculated minimum purge volume. The well casing volume for a 2-inch well will be
calculated using the following formula:
Vc (gallons) = 0.163 x hw
where:
Vc = volume in the well casing = (dc2/4) x 3.14 x hw x 7.48 gallons/cubic foot
do = casing diameter in feet (dc = 0.167)
hw = height of the water column (i.e., well depth minus depth to water)
The purge water will be disposed of on the ground surface at least 10 feet downgradient of the
monitoring well, unless field characteristics suggest the water will need to be disposed of
otherwise.
The bailers will be equipped with a check valve and bottom -emptying device. The bailer will be
lowered gently into the well to minimize the possibility of degassing the water.
Field measurements of temperature, pH, specific conductance, and turbidity will be made before
and after sample collection as a check on the stability of the groundwater sampled over time.
Precautions to minimize turbidity will be taken. The direct -reading equipment used at each well
will be calibrated in the field according to the manufacturer's specifications prior to each day's
use and checked at a minimum at the end of each sampling day. Calibration information should
be documented in the instrument's calibration logbook and the field book.
4.3.1.3 COLLECTION
Samples will be collected and containerized in the order described below.
• VOCs (SW- 846 Method 8260)
• Semi -Volatile Organic Compounds (SW- 846 Method 8270)
• Herbicides (SW-846 Method 8151)
• Pesticides (SW- 846 Method 8080)
• Polychlorinated Biphenyls (PCBs; SW-846 Method 8082)
• Cyanide and Sulfide
• Total Metals
• Field and General Chemistry Parameters (as applicable)
12

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
Samples will be transferred directly from field sampling equipment into pre -preserved,
laboratory -supplied containers.
4.3.1.4 DECONTAMINATION
Non -dedicated field equipment that is used for purging or sample collection shall be cleaned
with a phosphate -free detergent, and triple -rinsed with distilled water. Any disposable tubing
used with non -dedicated pumps should be discarded after use at each well. Clean, chemical -
resistant nitrile gloves will be worn by sampling personnel during well evacuation and sample
collection. Measures will be taken to prevent contact with surface soils, which could introduce
contaminants into the well or sample.
4.4 Sample Preservation and Handling
Upon containerizing groundwater samples, the samples will be packed into pre -chilled, ice -filled
coolers and either hand -delivered or shipped overnight by a commercial carrier to a NC -certified
laboratory for analysis. Sample preservation methods will be used to retard biological action and
hydrolysis, as well as to reduce sorption effects. These methods will include chemical
preservation, cooling/refrigeration at 4° C, and protection from light.
4.5 Chain -of -Custody Program
The chain -of -custody program will allow for tracing sample possession and handling from the
time of field collection through laboratory analysis. The chain -of -custody program includes
sample labels, sample seal, field logbook, and chain -of -custody record.
4.5.1 Sample Labels
Legible labels sufficiently durable to remain legible when wet will contain the following
information:
• Site and sample identification number
• Monitoring well number or other location
• Date and time of collection
• Name of collector
• Parameters to be analyzed
• Preservative, if applicable
4.5.2 Sample Seal
The shipping container will be sealed to ensure that the samples have not been disturbed during
transport to the laboratory. The tape is labeled with instructions to notify the shipper if the seal is
broken prior to receipt at the laboratory.
4.5.3 Field Logbook
The field logbook will contain sheets documenting the following information:
• Identification of the well
• Well depth
• Field meter calibration information
13

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
• Static water level depth and measurement technique
• Purge volume (given in gallons)
• Time well was purged
• Date and time of sample collection
• Well sampling sequence
• Types of sample containers used and sample identification numbers
• Preservative used
• Field analysis data and methods
• Field observations on sampling event
• Name of collector(s)
• Climatic conditions including air temperatures and precipitation
4.5.4 Chain -of -Custody Record
The chain -of -custody record is required for tracing sample possession from time of collection to
time of receipt at the laboratory. A chain -of -custody record will accompany each individual
shipment. The record will contain the following information:
• Sample destination and transporter
• Sample identification numbers
• Signature of collector
• Date and time of collection
• Sample type
• Identification of well
• Number of sample containers in shipping container
• Parameters requested for analysis
• Signature of person(s) involved in the chain of possession
• Inclusive dates of possession
• Internal temperature of shipping container upon opening in laboratory (noted by the
laboratory)
A copy of the completed chain -of -custody form will accompany the shipment and will be
returned to the shipper after the shipping container reaches its destination. The chain -of -custody
record will also be used as the analysis request sheet.
4.6 Analytical Procedures
A laboratory certified by the North Carolina Department of Environmental Quality (NC DEQ) will
be utilized for analysis of the groundwater and surface water samples. Analyses will be
performed in accordance with United States Environmental Protection Agency (US EPA) SW-
846 methods in accordance with the US EPA guidance document (US EPA 1997; Update VI I).
The monitoring parameters are listed in Appendix A. Alternate SW-846 methods may be used if
they have the same or lower reporting limits. The laboratory must report any detection of any
constituent to the method detection limit (MDL) and identify the practical quantitation limit (PQL).
The MDL should be at or below established groundwater and surface water standards, where
applicable.
14

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Groundwater Sampling Methodology
The laboratory certificates -of -analyses shall, at a minimum, include the following information:
• Narrative: Must include a brief description of the sample group (number and type of
samples, field and associated lab sample identification numbers, preparation and
analytical methods used). The data reviewer shall also include a statement that all
holding times and Quality Control (QC) criteria were met, samples were received intact
and properly preserved, with a brief discussion of any deviations potentially affecting
data usability. This includes, but is not limited to, test method deviation(s), holding time
violations, out -of -control incidents occurring during the processing of QC or field samples
and corrective actions taken, and repeated analyses and reasons for the re -analyses
(including, for example, contamination, failing surrogate recoveries, matrix effects, or
dilutions). The narrative shall be signed by the laboratory director or authorized
laboratory representative, signifying that all statements are true to the best of the
reviewer's knowledge, and that the data meet the data quality objectives as described in
this plan (except as noted). One narrative is required for each sample group.
• Original Chain -of- Custody Form.
• Target Analyte List (TAL)/Target Compound List (TCL): The laboratory shall list all
compounds for which the samples were analyzed. The TAL/TCL is typically included as
part of the analytical reporting forms.
• Dilution factors with a narrative of the sample results, including the reasons for the
dilution (if any).
• Blank Data: For organic analyses, the laboratory shall report the results of any method
blanks, reagent blanks, trip blanks, field blanks, and any other blanks associated with
the sample group. For inorganic analyses, the laboratory shall provide the results of any
preparation or initial calibration blanks associated with the sample group.
• QC Summary: The laboratory will provide summary forms detailing laboratory QC
sample results, which include individual recoveries and relative percent differences (if
appropriate) for the following Quality Assurance (QA)/QC criteria: surrogates, Matrix
Spike (MS) analyses, MS Duplicate analyses, Laboratory Control Standard (LCS), and
sample duplicate analyses. QC control limits shall also be reported; if any QC limits are
exceeded, a flag or footnote shall be placed to indicate the affected samples.
Additional QA data and/or other pertinent data may be reported as requested by the
owner/operator of the facility.
4.7 Quality Assurance and Quality Control Program
A field blank may be collected and analyzed during each monitoring event to verify that the
sample collection and handling process has not affected the quality of the samples. The field
blank will be prepared in the field and exposed to the sampling environment. As with all other
samples, the time of the blank exposure will be recorded so that the sampling sequence is
documented. The field blank will be analyzed for the same list of constituents as the
groundwater samples.
The assessment of blank analysis results will be in general accordance with US EPA guidance
documents (US EPA 1993 and 1994). No positive sample results will be relied upon unless the
15

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Statistical Methods
concentration of the compound in the sample exceeds ten times the amount in any blank for
common laboratory contaminants, or five times the amount for other compounds. If necessary,
re -sampling will be performed to confirm or refute suspect data; such re -sampling will occur
within the individual compliance monitoring period. The "B" qualifier designates that the reported
detection is considered to represent cross -contamination and that the reported constituent is not
considered to be present in the sample at the reported concentration.
5 Statistical Methods
Statistical analysis of groundwater monitoring data is not required by regulation for landfill
compliance. However, it is allowed by regulation for the purposes of determining naturally
occurring (i.e., background) concentrations of constituents. If utilized, statistical evaluation of
groundwater monitoring data will be performed in compliance with Rule .1632 (g), (h), and (i)
and the US EPA's Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities,
Unified Guidance (March 2009). Statistics will not be utilized for the water quality and indicator
parameters, which are collected for qualitative and informational purposes only.
Intra-well statistical comparisons may be used to evaluate the inorganic groundwater data, if
appropriate. Intra-well monitoring does not require background monitoring at upgradient wells or
pooling of the data because water chemistry of a well is compared to itself over time. However,
upgradient well(s) are useful for detecting any potential offsite influences on the monitoring
network and will be monitored. Intra-well monitoring is generally preferable to inter -well
monitoring for lined facilities because it eliminates the spatial component of natural groundwater
chemistry variability; this spatial component can comprise a significant portion of the total
variability that must be accounted for by the statistical methodology.
6 Surface Water Monitoring (Rule .0602)
In accordance with Rule .0602 of the NCSWMR, surface water monitoring locations have been
established to monitor surface water quality at the facility. Four surface water locations (SW-1
through SW-4) will be monitored at the MSW unit. An additional surface water location (SW-5)
will be monitored downstream of the C&D unit. Monitoring locations are shown on Figure 1.
The upstream monitoring point for both the MSW and C&D units (SW-1) is along Second Creek.
Downstream monitoring points SW-3 and SW-4 are downstream monitoring locations along
unnamed tributaries to Second Creek. Downstream monitoring point SW-5 monitors Second
Creek downgradient of the C&D unit, and SW-2 monitors Second Creek downstream of both
units near the property line. Note that location SW-3 captures discharge from the underdrain
and runoff from the proposed Cell/Phase V expansion area, thus, no additional surface water
samples are proposed. Samples will only be collected at each location if flowing water is
observed during the sampling event. Samples will be collected in accordance with the US EPA
SESD's Surface Water Sampling Operating Procedures (December 2021).
Surface Water Monitoring Location Unit(s) Monitored
Point Identification
SW-1 Upstream (Second Creek) MSW/C&D
16

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
References
Surface Water Monitoring Location Unit(s) Monitored
Point Identification
SW-2
Downstream (Second Creek)
MSW/C&D
SW-3
Downstream (Unnamed Tributary)
MSW
SW-4
Downstream (Unnamed Tributary)
MSW
SW-5
Downstream (Second Creek)
C&D
The surface water monitoring points will be sampled semi-annually for analysis of NC Appendix
I constituents, and pH, specific conductivity, and temperature. The results of the analysis of the
surface water data will be submitted to the SWS at least semi-annually in conjunction with the
groundwater data. Data will be compared to applicable NC surface water standards, and those
comparisons will be included with each submittal.
7 References
The references cited below were used in the preparation of this report and may or may not be
referenced in the text.
Butler, R.J., and Secor, Jr., D.T., 1991, The Central Piedmont, in Horton, J. W., Jr., and Zullo,
V.A., eds., The Geology of the Carolinas: The University of Tennessee Press, pp. 59-78.
Buxton Environmental, Inc., September 2011, Design Hydrogeologic Report, Proposed Phase
IV Landfill. Subtitle D Municipal Solid Waste Landfill Expansion, Rowan County Landfill.
HDR Engineering of the Carolinas, Inc., August 2022, Design Hydrogeologic Report, Proposed
Phase V Landfill. Subtitle D Municipal Solid Waste Landfill Expansion, Rowan County
Landfill.
Golder Associates NC, Inc., March 2020. Water Quality Monitoring Report, First Semi -
Annual 2020 Sampling Event, Active Rowan County Landfill, Permit No. 80-03, Rowan
County,
Golder Associates NC, Inc., August 2021. Water Quality Monitoring Report, Second Semi -
Annual 2021 Sampling Event, Active Rowan County Landfill, Permit No. 80-03, Rowan
County, North Carolina. NCGS, 1985. Geologic Map of North Carolina. Scale1:500,000.
S&ME, October 2005. Water Quality Monitoring Plan —Rowan County Landfill, Woodleaf, NC.
US EPA. 1996. Low -Flow (Minimal Drawdown) Ground -Water Sampling Procedures. Puls,
Robert W. and Barcelona, Michael J.
US EPA. 1993. Region III Modifications to Laboratory Data Validation Functional Guidelines for
Evaluating Inorganic Analyses, EPA 540/R-01-008. April.
US EPA, 1994. Region III Modifications to National Functional Guidelines for Organic Data
Review Multi -Media, Multi -Concentration (OLMO1.0-OLMO0.9), EPA 540/R-99-008.
September.
US EPA. 1986. RCRA Ground Water Monitoring Technical Enforcement Guidance Document
(TEGD).
US EPA Region 4, 2008. Science and Ecosystem Support Division Design and Installation of
Monitoring Wells. February.
17

Rowan County Landfill i Phase V Construction Permit Application — Water Quality Monitoring Plan ���
References
US EPA Region 4, 2020. Science and Ecosystem Support Division Field Equipment Cleaning
and Decontamination. June.
US EPA Region 4, 2017. Science and Ecosystem Support Division Groundwater Sampling
Operating Procedures. April.
US EPA Region 4, 2020. Science and Ecosystem Support Division Management of
Investigation Derived Waste. May.
US EPA Region 4, 2021. Science and Ecosystem Support Division Surface Water Sampling
Operating Procedures. December.
US EPA. 2009. Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities, Unified
Guidance, EPA 530-R-09-007. March.
US EPA. June 1997. SW-846 Methods for Evaluating Solid Waste, Physical/Chemical Methods,
Final Update VII (June 2022).
18

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Professional Certification
8 Professional Certification
The Water Quality Monitoring Plan for the Rowan County active MSW and closed C&D units at
this facility has been prepared by a qualified geologist who is licensed to practice in the State of
North Carolina. The plan has been prepared based on first-hand knowledge of site conditions
and familiarity with North Carolina solid waste rules and industry standard protocol. This
certification is made in accordance with North Carolina Solid Waste Regulations, indicating this
Water Quality Monitoring Plan should provide early detection of any release of hazardous
constituents to the uppermost aquifer, so as to be protective of public health and the
environment. No other warranties, expressed or implied, are made.
HDR En the Carolinas, Inc.
•��q'�,GEWSFp�y
• •
a
r
k FIL
Mark Filardi, 1886)
Southeast Remediation Lead
Not valid unless this document bears the seal of the above -mentioned licensed professional.
Engineering Lic. No. F-0116 /Geology Lic. No. C-503
19

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Professional Certification
This page intentionally left blank.
20

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Tables
Tables

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Tables
This page intentionally left blank.

August 2022
Table 1
Summary of Groundwater Monitoring Well Construction Information
Rowan County Landfill (Active MSW and Closed C&D Facilities)
Permit No. 80-03
Well
Identification
Northing
Easting
Date of
Construction
Ground
Surface
Elevation
ft AMSL
TOC
Elevation
(ft AMSL)
Well
Depth
(ft bgs)
Well
Diameter
(inches)
Screened
Interval
(ft AMSL)
Geology of Screened
Interval
Well Type
MW-1
1536611.82
733038.15
715.00
717.50
27.0
2
690.50 - 700.50
Partially Weathered Rock
MSW Compliance Monitoring Point
MW-6
1538418.99
732034.90
665.55
668.15
53.7
2
614.45 - 619.45
Water Level Only
MW-7
1538340.33
731108.57
660.60
663.14
28.5
2
634.64 - 644.64
MSW Compliance Monitoring Point
MW-9
1536844.42
733960.05
698.63
738.13
39.5
2
698.63 - 708.63
MSW Compliance Monitoring Point
MW-11
1538285.50
732876.62
680.94
683.27
23.9
2
659.32 - 669.32
MSW Compliance Monitoring Point
MW-12
1538299.11
733113.18
682.94
685.88
22.6
2
663.28 - 673.28
MSW Compliance Monitoring Point
MW-13
1538303.87
733395.18
694.31
696.33
24.5
2
671.80 - 681.80
MSW Compliance Monitoring Point
MW-16
1539006.79
734292.09
750.50
752.69
56.7
2
695.99 - 705.99
MSW Compliance Monitoring Point
MW-17
1539992.75
733886.30
752.42
755.36
55.0
2
697.42 - 712.42
C&D Compliance Monitoring Point
MW-18R
1540067.64
732809.77
07/24/07
658.30
661.39
30.0
2
628.30 - 643.30
Saprolite/PWR
C&D Compliance Monitoring Point
MW-19
1540348.55
732908.08
-
650.47
653.45
20.0
2
630.47 - 645.47
C&D Compliance Monitoring Point
MW-20
1536619.71
732537.54
04/05/05
713.90
717.00
33.0
2
680.9 - 695.9
Saprolite/PWR
MSW Compliance Monitoring Point
MW-23
1537990.80
732183.59
04/08/05
1 694.29
697.25
38.5
2
655.79 - 670.79
Saprolite
MSW Compliance Monitoring Point
MW-23A
1537990.80
732173.30
04/11/05
693.82
696.91
68.5
2
625.32 - 640.32
PWR
Water Level Only
MW-24R
1537954.02
732801.79
04/12/11
714.39
717.10
43.6
2
686.39 - 671.39
Saprolite/PWR
MSW Compliance Monitoring Point
MW-25
1536603.20
731757.27
04/15/11
704.98
707.46
40.6
2
679.42 - 664.42
MSW Compliance Monitoring Point
MW-26
1537383.59
731382.04
04/21/11
694.80
697.30
38.9
2
670.88 - 655.88
MSW Compliance Monitoring Point*
MW-27
1538076.45
731358.39
04/26/11
661.46
663.90
18.5
2
657.96 - 642.96
MSW Compliance Monitoring Point
MW-27A
1538084.39
731350.62
04/25/11
661.27
664.02
64.3
2
602.27 - 597.27
Water Level Only
MW-28
1538097.33
731753.26
04/26/11
679.23
682.03
26.2
2
668.02 - 653.02
Water Level Only
MW-28R
731882.07
1538013.18
07/11/17
683.04
685.26
35.3
2
666.04 - 651.04
MSW Compliance Monitoring Point
MW-30
730616.08
1538120.74
09/20/21
653.10
656.15
24.3
2
641.82 - 631.82
Saprolite/PWR
MSW Compliance Monitoring Point
MW-31
730729.74
1537399.50
09/22/21
667.69
670.12
23.8
2
656.36 - 646.36
MSW Compliance Monitoring Point
MW-32
730774.20
1537037.41
09/22/21
663.69
666.16
25.1
2
651.08 - 641.08
MSW Compliance Monitoring Point
MW-33
731038.18
1536789.87
09/23/21
680.64
683.19
32.6
2
660.59 - 650.59
MSW Compliance Monitoring Point
MW-34
731468.50
1 1536632.93
10/01/21
702.06
704.75
46.9
2
667.83 -
1 MSW Compliance Monitoring Point
Notes:
ft AMSL = feet above mean sea level MW-26 to be abandoned immediately prior to Phase V construction
ft bgs = feet below ground surface
TOC = Top of Well Casing Elevation
Monitoring wells MW-6, MW-27A, and MW 28 are monitored for water levels only.
FN
Page 1 of 1

This page intentionally left blank.

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Figures
Figures

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Figures
This page intentionally left blank.

1
V
3
M
5
R
N
OLD
EXISTING LANDFILL
SEDIMENT ENTRANCE
BASIN
r — — — — — — — — , —
--
00
00
00
AW-
d d MWIW-4 00 - - -
00
MMW-5A I I �� ) ��� 00.■
00
I ' PHABE I ■ I y, ,
I III LA DF71
■' ►�`1 Irtew
EXISTING 00,
I
SEDIMENTS ,00
BASIN I _� ■ ■
1 MW-1E
1 702$� 1 �-
1 ■... ■
-6A
■0ofo
00 ou
OA
J ...:.
69 I I s$ -sow
00
I 00
I -MMW-7.. j , `._._. r - ■ � •-.^,�"�� �;
i 1 00
T( I �.
....... it
f oo
�.
MW-250�' hBW LAIyDR.L - o
6703j3► _
� y
j
FUTURE MSW
LANDFILL
MW-33 _ (PHASE V)
1 O
a
MW-32 O
mow_ 1,
HDR Engineering, Inc. of the Carolinas
N.C.B.E.L.S. License Number: F-0116
440 S Church Street, Suite 1200
Charlotte, NC 28202-2075
704.338.6700
SCALE
HOUSE
706.42
PROPERTY
`•` .. 1�= f LINE
❑
1010 2A o 1----
�� l ' � 'ram -�r _ •; : f �� � -.
MW-2 --- dMW-17
MEN
706.07
00
CR
go,00
00
lol
low 00
1 08/2022 ISSUED FOR APPROVAL
ISSUE DATE DESCRIPTION
r• I
Ai
r t=
1 z
I TO SW-1
(SEE NOTE 6)
i�
PROJECT MANAGER P. WESTMORELAND, PE
PROJECT ENGINEER P. WESTMORELAND, PE
DESIGNER N. HAREDY, El
DRAWN BY J. GAUL
LEGEND
EXISTING TOPOGRAPHIC CONTOUR
— —
FACILITY BOUNDARY
— — —
APPROXIMATE LIMITS OF WASTE
— — — — — 650
GROUNDWATER SURFACE CONTOURS
APPROXIMATE GROUNDWATER FLOW SEGMENT USED TO CALCULATE GRADIENT
0647,56
EXISTING GROUNDWATER MONITORING WELL WITH GROUNDWATER ELEVATION
❑SW-4
SURFACE WATER MONITORING POINT
COMPLIANCE METHANE MONITORING POINT
ASSESSMENT METHANE MONITORING POINT
NM
NOT MEASURED
0
FRENCH DRAIN MONITORING POINT
NOTES
1. TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET,
2, GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET,
3. GROUNDWATER ELEVATIONS MEASURED ON JANUARY 16, 2020.
4, GROUNDWATER CONTOURS ARE BASED ON LINEAR INTERPOLATION BETWEEN AND
EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS.
THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL GROUNDWATER
CONDITIONS.
5- GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE
CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT
ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY
PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP
BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS.
6. SURFACE WATER MONITORING POINT SW-1 IS APPROXIMATELY 550 FEET OFF THE MAPPING LIMITS
SHOWN AND IS COLLECTED FROM SECOND CREEK.
7. MONITORING WELLS MW-27A, MW-28 AND MW-6 ARE UTILIZED FOR WATER LEVEL MONITORING
ONLY.
8. THE LOCATION OF THE FRENCH DRAIN MONITORING POINT 13 APPROXIMATE.
9. MW-28R WAS INSTALLED JULY 11, 2017 TO REPLACE MW-28. MW-28 WILL CONTINUE TO BE UTILIZED
FOR WATER LEVEL MONITORING.
REFERENCE
1. EXISTING CONDITIONS INSIDE OF DASHED LINE COMPILED BY CARTOGRAPHIC AERIAL MAPPING,
INC- USING PHOTOGRAMMETRIC METHODS, FROM AERIAL PHOTOGRAPHY DATED JUNE 26, 2020-
EXISTING CONDITIONS OUTSIDE OF DASHED LINE PROVIDED BY S&ME ENGINEERING, INC., DATE
UNKNOWN.
0 250 500
SITE LOCATION MAP SCALE FEET
1 11 _ 1 a,ono}
cod
Salisbury
ROWAN COUNTY LANDFILL
PHASE V
CONSTRUCTION PERMIT
APPLICATION
NOTES:
1. INFORMATION SHOWN IN THIS DRAWING
DEVELOPED FROM A GOLDER ASSOCIATES NC,
INC DRAWING DATED 11-04-2020. MONITORING
WELLS MW-30 TO MW-34, ASSOCIATED WITH
PHASE V, COMMENCED WATER LEVEL
MONITORING IN NOVEMBER 2021 AND IS
CURRENTLY MEASURED MONTHLY. THIS DATA
HAS BEEN REPORTING IN THE HDR
HYDRO -GEOLOGICAL INVESTIGATION REPORT,
AUGUST 2022.
WATER QUALITY MONITORING PLAN
0 1" 2"
FILENAME I WATER QUALITY MONITORING PLAN.DWGI SHEET
SCALE I AS SHOWN
1
IC
C
w
PROJECT NUMBER 110337481

PROTECTIVE CASING WITH
LOCK
1/4" WEEP HOLE
SURVEYOR'S PIN (FLUSH
MOUNT)
CONCRETE WELL APRON
GROUND
MINIMUM 2'x2' SQUARE PAD
SURFACE
0.5"
47,
o a
SLOPED TO DRAIN
o
CONTINUOUS POUR CONCRETE
v
' a
v
CAP AND WELL APRON
I
v
v
ev
CEMENT AND SODIUM BENTONITE
MIXTURE
WELL DIAMETER 2" PVC
THREADED
BOREHOLE DIAMETER
6" MINIMUM
BENTONITE
LAYER
(2' MIN.)
=
FILTER PACK 20-40 SAND (2' OR
LESS ABOVE SCREEN)
_
-
= POTENTIOMETRIC SURFACE
-
SCREENED INTERVAL 0.010 INCH
=
SLOT MANUFACTURED SCREEN
BOTTOM CAP
TYPICAL GROUNDWATER MONITORING WELL
SCHEMATIC
ROWAN COUNTY ACTIVE AND CLOSED LANDFILLS
PERMIT NO. 80-03
ROWAN COUNTY, NORTH CAROLINA
DATE
08/12/2022
FIGURE
2

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Figures
AppendixA— Regulatory
Requirements

Rowan County Landfill I Phase V Construction Permit Application — Water Quality Monitoring Plan ���
Figures
This page intentionally left blank.

DENR USE ONLY ❑Paper Report [:]Electronic Data - Email CD (data loaded: Yes / No Doc/Event #:
NC DENR I I 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 includes 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):
Contact for questions about data formatting. Include data preparer's name, telephone number and E-mail address:
Name:
E-mail:
Phone:
NC Landfill Rule: Actual sampling dates (e.g.,
Facility name: Facility Address: Facility Permit # (.0500 or. 1600) October 20-24, 2006)
Environmental Status: (Check all that apply)
❑ Initial/Background Monitoring ❑ Detection Monitoring ❑ Assessment Monitoring ❑ Corrective Action
of data submitted: (Check all that apply)
Groundwater monitoring data from monitoring wells ❑
Groundwater monitoring data from private water supply wells ❑
Leachate monitoring data ❑
Surface water monitoring data
Methane gas monitoring data
Corrective action data (specify)
Other(specify)
Notification attached?
B No. No groundwater or surface water standards were exceeded.
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 and
preliminary analysis of the cause and significance of any concentration.
❑ Yes, a notification of values exceeding an explosive methane gas limit is attached. It includes the methane monitoring points, dates, sample
values and explosive methane gas limits.
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 gas
levels, and a preliminary analysis of the cause and significance of concentrations exceeding groundwater standards. I am aware that there
are significant penalties for making any false statement, representation, or certification including the possibility of a fine and imprisonment.
Facility Representative Name (Print) Title (Area Code) Telephone Number
Signature
Facility Representative Address
Date
Affix NC Licensed/ Professional Geologist Seal
NC PE Firm License Number (if applicable effective May 1, 2009)
Revised 6/2009

NC Solid Waste Section
Environmental Monitoring List
NC Solid Waste Section Environmental Monitoring
Groundwater Protection Compliance Standards - Constituents List
(updated April 11, 2022)
All units are ug/L unless otherwise noted.
NE = Not Established
Groundwater Protection Standards)
CAS RN z SWS ID'
DEQ
Calculated
CHEMICAL NAME 2L 2L IMAC MCL GWP Std Reference List 4
67-64-1 3
Acetone
Acrylonitrile
6000 NE
NE NE
NE NE Appendix1
NE NE Appendix 1
107-13-1
8
7440-36-0
13
Antimony
1
NE
6
NE
Appendix I
7440-38-2
14
Arsenic
30
NE
10
NE
Appendix 1
7440-39-3
15
Barium
700
NE
2000
NE
Appendix 1
71-43-2
16
Benzene
1
NE
5
NE
Appendix1
7440-41-7
23
Beryllium
4
NE
4
NE
Appendix I
74-97-5
28
Bromochloromethane; Chlorobromethane
NE
I NE
NE
0.6
Appendix 1
75-27-4
29
Bromodichloromethane; Dibromochloromethane
0.6
NE
80
NE
Appendix 1
75-25-2
30
Bromoform; Tribromomethane
4
NE
80
NE
Appendix I
7440-43-9
34
Cadmium
2
NE
5
NE
Appendix I
75-15-0
35
Carbon disulfide
700
NE
NE
NE
Appendix 1
56-23-5
36
Carbon tetrachloride
0.3
NE
5
NE
Appendix 1
108-90-7
39
Chlorobenzene
50
NE
100
NE
Appendix 1
75-00-3
41
Chloroethane; Ethyl chloride
3000
NE
NE
NE
Appendix1
67-66-3
44
Chloroform; Trichloromethane
70
NE
80
NE
Appendix 1
7440-47-3
51
Chromium
10
NE
100
NE
Appendix 1
7440-48-4
53
Cobalt
1
NE
NE
NE
Appendix 1
7440-50-8
54
Copper
1000
NE
1300
NE
AppendixI
124-48-1
66
Dibromochloromethane; Chlorodibromomethane
0.4
NE
80
NE
Appendix 1
96-12-8
67
1,2-Dibromo-3-chloropropane; DBCP
0.04
NE
0.2
NE
Appendix 1
106-93-4
68
1,2-Dibromoethane; Ethylene dibromide; EDB
0.02
NE
0.05
NE
Appendix I
95-50-1
69
o-Dichlorobenzene; 1,2-Dichlorobenzene
20
NE
600
NE
Appendix1
106-46-7
71
p-Dichlorobenzene; 1,4-Dichlorobenzene
6
NE
75
NE
Appendix 1
110-57-6
73
trans-1,4-Dichloro-2-butene
NE
NE
NE
NE
Appendix 1
75-34-3
75
1,1-Dichloroethane; Ethyldidene chloride
6
NE
NE
NE
Appendix I
107-06-2
76
1 1,2-Dichloroethane; Ethylene dichloride
0.4
NE
5
NE
Appendix 1
75-35-4
77
1 1,1-Dichloroethylene; 1,1-Dichloroethene;
350
NE
7
NE
Appendix I
Page 1 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
156-59-2
78
Vinylidene chloride cis-1,2-Dichloroethylene; cis-1,2-
Dichloroethene
70
NE
70
NE
Appendix 1
156-60-5
79
trans-1,2-Dichloroethylene;trans-1,2-Dichloroethene
100
NE
100
NE
AppendixI
78-87-5
82
1,2-Dichloropropane
0.6
NE
5
NE
Appendix I
10061-01-5
86
cis-1,3-Dichloropropene
0.4
NE
I NE
NE
Appendix 1
10061-02-6
87
trans-1,3-Dichloropropene
0.4
NE
NE
NE
Appendix I
100-41-4
110 Ethylbenzene
600
NE
700
NE
Appendix 1
591-78-6
124 2-Hexanone; Methyl butyl ketone
40
NE
NE
NE
Appendix 1
7439-92-1
131
Lead
15
NE
15
NE
Appendix1
74-83-9
136
Methyl bromide; Bromomethane
30
NE
NE
NE
Appendix I
74-87-3
137
Methyl chloride; Chloromethane
3
NE
NE
NE
Appendix 1
74-95-3
139
Methylene bromide; Dibromomethane
NE
70
1 NE
NE
Appendix 1
75-09-2
140
Methylene chloride; Dichloromethane
5
NE
5
NE
Appendix I
78-93-3
141
Methyl ethyl ketone; MEK; 2-Butanone
4000
NE
NE
NE
Appendix 1
74-88-4
142
Methyl iodide; Iodomethane
NE
NE
NE
NE
Appendix 1
108-10-1
147
4-Methyl-2-pentanone; Methyl isobutyl ketone
100
NE
I NE
NE
Appendix I
7440-02-0
152
Nickel
100
NE
NE
NE
Appendix 1
7782-49-2
183
Selenium
20
NE
50
NE
Appendix I
7440-22-4
184
Silver
20
NE
NE
NE
Appendix 1
100-42-5
186
Styrene
70
NE
1 100
NE
Appendix 1
630-20-6
190
1,1,1,2-Tetrachloroethane
1
NE
NE
I NE
Appendix 1
79-34-5
191
1,1,2,2-Tetrachloroethane
0.2
NE
NE
NE
Appendix I
127-18-4
192
Tetrachloroethylene; Tetrachloroethene;
Perchloroethylene
0.7
NE
5
NE
Appendix 1
7440-28-0
194
Thallium
2
NE
2
NE
Appendix I
108-88-3
196
Toluene
600
NE
1000
NE
Appendix 1
71-55-6
200
1,1,1-Trichloroethane; Methylchloroform
200
NE
200
NE
Appendix 1
79-01-6
201
Trichloroethylene; Trichloroethene
3
NE
5
NE
Appendix I
79-00-5
202
1,1,2-Trichloroethane
0.6
NE
5
NE
Appendix 1
75-69-4
203
Trichlorofluoromethane; CFC-11
2000
NE
NE
NE
Appendix 1
96-18-4
206
1,2,3-Trichloropropane
0.005
NE
NE
NE
Appendix 1
7440-62-2
209
Vanadium
7
NE
NE
NE
Appendix 1
108-OS-4
210
1 Vinyl acetate
NE
88
1 NE
I NE
Appendix 1
75-01-4
211
1 Vinyl chloride; Chloroethene
0.03
NE
1 2
1 NE
Appendix I
Page 2 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
7440-66-6
213
Zinc
1000
NE
NE
NE
Appendix 1
1330-20-7
346
Xylene (total)
S00
NE
10000
NE
Appendix I
83-32-9
1
Acenaphthene
80
NE
I NE
NE
Appendixll
208-96-8
2
Acenaphthylene
200
NE
NE
NE
Appendix II
75-05-8
4
Acetonitrile; Methyl cyanide
NE
NE
NE
NE
Appendix II
98-86-2
5
Acetophenone
700
NE
NE
NE
Appendix II
53-96-3
6
2-Acetylaminofluorene; 2-AAF
NE
NE NE
NE
Appendix II
107-02-8
7
Acrolein
4
NE NE
NE
Appendix II
309-00-2
9
Aldrin
0.002
NE
NE
NE
Appendix II
107-05-1
10
Allyl chloride
NE
NE
NE
NE
Appendix II
92-67-1
11
4-Aminobiphenyl
NE
NE
NE
NE
Appendix II
120-12-7
12
Anthracene
2000
NE
NE
NE
Appendixll
56-55-3
17
Benzo[a]anthracene; Benzanthracene
O.OS
NE
NE
NE
Appendix II
205-99-2
18
Benzo[b]fluoranthene
O.OS
NE
NE
NE
Appendix II
207-08-9
19
Benzo[k]fluoranthene
O.S
NE
NE
NE
Appendix II
191-24-2
20
Benzo[ghi]perylene
200
NE
NE
NE
Appendix II
50-32-8
21
Benzo[a]pyrene
O.00S
NE
0.2
NE
Appendix II
100-51-6
22
Benzyl alcohol
700
NE
NE
NE
Appendix II
319-84-6
24
alpha-BHC
NE
0.006
NE
NE
Appendix II
319-85-7
25
beta-BHC
NE
0.02
1 NE
NE
Appendix II
319-86-8
26
delta-BHC
NE
NE
NE
0.019
Appendix II
58-89-9
27
gamma-BHC; Lindane
0.03
NE
0.2
NE
Appendix II
101-55-3
31
4-Bromophenyl phenyl ether
NE
NE
NE
NE
Appendix II
85-68-7
32
Butyl benzyl phthalate; Benzyl butyl phthalate
1000
NE
I NE
NE
Appendix II
84-74-2
33
Di-n-butyl phthalate
700
NE
NE
NE
Appendix II
106-47-8
38
p-Chloroaniline
NE
NE
NE
NE
Appendix II
510-15-6
40
Chlorobenzilate
NE
NE
NE
NE
Appendix II
111-91-1
42
Bis(2-chloroethoxy)methane
NE
NE
I NE
NE
Appendix II
111-44-4
43
Bis(2-chloroethyl)ether; Dichloroethyl ether
NE
NE
NE
0.031
Appendix II
59-50-7
45
p-Chloro-m-cresol; 4-Chloro-3-methyl phenol
NE
NE
NE
NE
Appendix II
108-60-1
46
Bis(2-chloro-l-methylethyl) ether; 2,2'-
Dichlorodiisopropyl ether; DCIP
NE
NE
NE
NE
Appendix II
91-58-7
47
2-Chloronaphthalene
NE
NE
NE
NE
Appendix II
Page 3 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
95-57-8
48
2-Chlorophenol
0.4
NE
NE
NE
Appendix II
7005-72-3
49
4-Chlorophenyl phenyl ether
NE
NE
NE
NE
Appendix II
126-99-8
50
Chloroprene
NE
NE
I NE
NE
Appendix II
218-01-9
52
Chrysene
5
NE
NE
NE
Appendix II
95-48-7
56
o-Cresol; 2-Methylphenol
400
NE
NE
NE
Appendix II
57-12-5
58
Cyanide
70
NE
200
NE
Appendix II
94-75-7
59
2,4-D; 2,4-Dichlorophenoxyacetic acid
70
NE
1 70
NE
Appendix II
72-54-8
60
4,4'-DDD
0.1
NE
NE
NE
Appendix II
72-55-9
61
4,4'-DDE
NE
NE
NE
NE
Appendix II
50-29-3
62
4,4'-DDT
0.1
NE
NE
I NE
Appendix II
2303-16-4
63
Diallate
NE
I NE
NE
NE
Appendix II
53-70-3
64
Dibenz[a,h]anth racene
0.005
NE
NE
NE
Appendix II
132-64-9
65
Dibenzofuran
28
NE
NE
NE
Appendix II
541-73-1
70
m-Dichlorobenzene; 1,3-Dichlorobenzene
200
NE
NE
NE
Appendix II
91-94-1
72
3,3'-Dichlorobenzidine
NE
I NE
NE
NE
Appendix II
75-71-8
74
Dichlorodifluoromethane; CFC 12
1000
NE
NE
NE
Appendix II
120-83-2
80
2,4-Dichlorophenol
0.98
NE
NE
I NE
Appendix II
87-65-0
81
2,6-Dichlorophenol
NE
NE
NE
NE
Appendix II
142-28-9
83
1,3-Dichloropropane; Trimethylene dichloride
NE
NE
NE
NE
Appendix II
594-20-7
84
2,2-Dichloropropane; Isopropylidene chloride
NE
NE
NE
NE
Appendix II
563-58-6
85
1,1-Dichloropropene
NE
NE
NE
NE
Appendix II
60-57-1
88
Dieldrin
0.002
NE
NE
NE
Appendix II
297-97-2
89
O,O-Diethyl 0-2-pyrazinyl phosphorothioate; Thionazin
NE
NE
NE
NE
Appendix II
84-66-2
90
Diethyl phthalate
6000
NE
NE
NE
Appendix II
60-51-5
91
Dimethoate
NE
NE
NE
NE
Appendix II
60-11-7
92
p-(Dimethylamino)azobenzene
NE
NE
NE
NE
Appendix II
57-97-6
93
7,12-Dimethylbenz[a]anthracene
NE
NE
NE
NE
Appendix II
119-93-7
94
3,3'-Dimethylbenzidine
NE
NE
NE
NE
Appendix II
105-67-9
95
2,4-Dimethylphenol; m-Xylenol
100
NE
NE
NE
Appendix II
131-11-3
96
Dimethyl phthalate
NE
NE
NE
NE
Appendix II
99-65-0
97
m-Dinitrobenzene
NE
NE
NE
NE
Appendix II
534-52-1
98
4,6-Dinitro-o-cresol; 4,6-Dinitro-2-methyl phenol
NE
NE
NE
NE
Appendix II
Page 4 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
51-28-5
99
2,4-Dinitrophenol
NE
NE
NE
NE
Appendix II
121-14-2
100
2,4-Dinitrotoluene
0.05
NE
NE
NE
Appendix II
606-20-2
101
2,6-Dinitrotoluene
NE
NE
I NE
NE
Appendix II
88-85-7
102
Dinoseb; DNBP; 2-sec-Butyl-4,6-dinitrophenol
7
NE
7
NE
Appendix II
122-39-4
103
Diphenylamine
NE
NE
NE
NE
Appendix II
298-04-4
104
Disulfoton
0.3
NE
NE
NE
Appendix II
959-98-8
105
Endosulfan 1
40
NE NE
NE
Appendix II
33213-65-9
106
Endosulfan 11
NE
NE NE
42
Appendix II
1031-07-8
107
Endosulfan sulfate
40
NE
NE
NE
Appendix II
72-20-8
108
Endrin
2
NE
2
NE
Appendix II
7421-93-4
109
Endrin aldehyde
2
NE
NE
NE
Appendix II
117-81-7
111
Bis(2-ethylhexyl) phthalate
3
NE
NE
NE
Appendix II
97-63-2
112
Ethyl methacrylate
NE
NE
NE
NE
Appendix II
62-50-0
113
Ethyl methanesulfonate
NE
NE
NE
NE
Appendix II
52-85-7
114
Famphur
NE
NE
NE
NE
Appendix II
206-44-0
115
Fluoranthene
300
NE
NE
NE
Appendix II
86-73-7
116
Fluorene
300
NE
NE
NE
Appendix II
76-44-8
117
Heptachlor
0.008
NE
0.4
NE
Appendix II
1024-57-3
118
Heptachlor epoxide
0.004
NE
0.2
NE
Appendix 11
118-74-1
119
Hexachlorobenzene
0.02
NE
1
NE
Appendix II
87-68-3
120
Hexachlorobutadiene
0.4
NE
NE
NE
I Appendix II
77-47-4
121
Hexachlorocyclopentadiene
NE
NE
50
50
Appendix II
67-72-1
122
Hexachloroethane
NE
NE
NE
2.5
Appendix II
1888-71-7
123
Hexachloropropene
NE
NE
I NE
NE
Appendix II
193-39-5
125
Indeno(1,2,3-cd)pyrene
0.05
NE
NE
NE
Appendix II
78-83-1
126
Isobutyl alcohol
NE
NE
NE
NE
Appendix II
465-73-6
127
Isodrin
NE
NE
NE
NE
Appendix II
78-59-1
128
Isophorone
40
NE
NE
NE
Appendix II
120-58-1
129
Isosafrole
NE
NE
NE
NE
Appendix II
143-50-0
130
Kepone
NE
NE
NE
NE
Appendix II
7439-97-6
132
Mercury
1
NE
2
NE
I App. II/C&D
126-98-7
133
Methacrylonitrile
NE
NE
NE
NE
I Appendix II
Page 5 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
91-80-5
134
Methapyrilene
NE
NE
NE
NE
Appendix II
72-43-5
135
Methoxychlor
40
NE
NE
NE
Appendix II
56-49-5
138
3-Methylcholanthrene
NE
NE
I NE
NE
Appendix II
80-62-6
143
Methyl methacrylate
2S
NE
NE
NE
Appendix II
66-27-3
144
Methyl methanesulfonate
NE
NE
NE
NE
Appendix II
91-57-6
145
2-Methyl naphthalene
30
NE
NE
NE
Appendix II
298-00-0
146
Methyl parathion; Parathion methyl
NE
NE NE
NE
Appendix II
91-20-3
148
Naphthalene
6
NE NE
NE
Appendix II
130-15-4
149
1,4-Naphthoquinone
NE
NE
NE
NE
Appendix II
134-32-7
150
1-Naphthylamine
NE
NE
NE
NE
Appendix II
91-59-8
151
2-Naphthylamine
NE
NE
NE
NE
Appendix II
99-09-2
153
m-Nitroaniline; 3-Nitroaniline
NE
NE
NE
NE
Appendix II
88-74-4
154
o-Nitroaniline; 2-Nitroaniline
NE
NE
NE
NE
Appendix II
100-01-6
155
p-Nitroaniline; 4-Nitroaniline
NE
NE
NE
NE
Appendix II
98-95-3
156
Nitrobenzene
NE
NE
NE
NE
Appendix II
99-55-8
157
5-Nitro-o-toluidine
NE
NE
NE
NE
Appendix II
88-75-5
158
o-Nitrophenol; 2-Nitrophenol
NE
NE
NE
NE
Appendix II
100-02-7
159
p-Nitrophenol; 4-Nitrophenol
NE
NE
NE
NE
Appendix II
55-18-5
160
N-Nitrosodiethylamine
NE
NE
NE
NE
Appendix II
62-75-9
161
N-Nitrosodimethylamine
0.0007
NE
NE
NE
Appendix II
924-16-3
162
N-Nitrosodi-n-butylamine
NE
NE
NE
NE
Appendix II
86-30-6
163
N-Nitrosodiphenylamine
NE
NE
NE
NE
Appendix II
621-64-7
164
N-Nitrosodipropylamine; N-Nitroso-N-dipropylamine; Di-
n-propylnitrosamine
NE
NE
NE
NE
Appendix II
10595-95-6
165
N-Nitrosomethylethalamine
NE
NE
NE
NE
Appendix II
100-75-4
166
N-Nitrosopiperidine
NE
NE
NE
NE
Appendix II
930-55-2
167
N-Nitrosopyrrolidine
NE
NE
NE
NE
Appendix II
117-84-0
168
Di-n-octyl phthalate
100
NE
NE
NE
Appendix II
56-38-2
169
Parathion
NE
NE
NE
NE
Appendix II
1336-36-3
170
Polychlorinated biphenyls; PCBs
NE
0.09
0.5
NE
Appendix II
608-93-5
171
Pentachlorobenzene
NE
NE
NE
NE
Appendix II
82-68-8
172
Pentachloronitrobenzene
NE
NE
NE
NE
Appendix II
87-86-5
173
Pentachlorophenol
0.3
NE
1
NE
Appendix II
Page 6 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
62-44-2
174
Phenacetin
NE
NE
NE
NE
Appendix II
85-01-8
175
Phenanthrene
200
NE
NE
NE
Appendix II
106-50-3
176
p-Phenylenediamine
NE
NE
NE
NE
Appendix II
108-95-2
177
Phenol
30
NE
NE
NE
Appendix II
298-02-2
178
Phorate
1
NE
NE
NE
Appendix II
23950-58-5
179
Pronamide
NE
NE
NE
NE
Appendix II
107-12-0
180
Propionitrile; Ethyl cyanide
NE
NE NE
NE
Appendix II
129-00-0
181
Pyrene
200
NE NE
NE
Appendix II
94-59-7
182
Safrole
NE
NE
NE
NE
Appendix II
93-72-1
185
Silvex; 2,4,5-TP
50
NE
NE
NE
Appendix II
18496-25-8
187
Sulfide
NE
NE
NE
NE
Appendix II
93-76-5
188
2,4,5-T; 2,4,5-Trichlorophenoxyacetic acid
NE
NE
NE
NE
Appendix II
95-94-3
189
1,2,4,5-Tetrachlorobenzene
2
NE
NE
NE
Appendix II
58-90-2
193
2,3,4,6-Tetrachlorophenol
200
NE
NE
NE
Appendix II
7440-31-5
195
Tin
2000
NE
NE
NE
Appendix II
95-53-4
197
o-Toluidine
NE
NE
NE
NE
Appendix II
8001-35-2
198
Toxaphene
0.03
NE
3
NE
Appendix II
120-82-1
199
1,2,4-Trichlorobenzene
70
NE
70
NE
Appendix II
95-95-4
204
2,4,5-Trichlorophenol
63
NE
NE
NE
Appendix II
88-06-2
205
2,4,6-Trichlorophenol
4
NE
NE
NE
Appendix II
126-68-1
207
O,O,O-Triethyl phosphorothioate
NE
NE
NE
NE
Appendix II
99-35-4
208
sym-Trinitrobenzene
NE
NE
NE
NE
Appendix II
57-74-9
339
Chlordane
0.1
NE
NE
NE
Appendix II
106-44-5
344
p-Cresol; 4-Methylphenol
40
NE
NE
NE
Appendix II
108-39-4
345
m-Cresol; 3-Methylphenol
400
NE
NE
NE
Appendix II
122-09-8 386 Benzeneethanamine, alpha,alpha-dimethyl i NE NE NE NE Appendix II
1746-01-6 440 2,3,7,8-TCDD; 2,3,7,8-Tetrachlorodiben zo- p-dioxin 0.0002 ng/L NE 0.03 NE Appendix II
123-91-1 422 1,4-dioxane 3 NE NE NE ALL'
SW301
301
Chloride 250000 NE NE
Total Dissolved Solids 500000 NE NE
NE
C&D
SW311
311
NE
C&D
14808-79-8
315
Sulfate
250000
NE
NE
NE
C&D/Leachate
SW337
337
Alkalinity
NE
NE
NE
NE
C&D
Page 7 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
7439-89-6
340
Iron
300
NE
NE
NE
C&D
7439-96-5
342
Manganese
Tetrahydrofuran
50
NE
NE
NE
C&D
109-99-9
441
NE
2000
NE
NE
C&D
SW316
316
Biological Oxygen Demand
NE
NE
NE
NE
Leachate
SW317
317
Chemical Oxygen Demand
NE
NE
NE
NE
Leachate
SW419
419
No2/No3 (nitrate & nitrite reported together)
NE
NE
NE
NE
Leachate
SW437
437
Orthophosphate Phosphorus
NE
NE
NE
NE
NE
Leachate
Leachate
Leachate
SW321
321
pH (lab)
7.0
NE
NE
NE
SW324
324
SpecCond (lab)
NE
NE
NE
226-36-8
385
1,2,5,6-Dibenzacridine
NE
NE
NE
NE
Other
122-66-7
394
1,2-Diphenylhydrazine
NE
NE
NE
NE
Other
87-61-6
371
1-2-3-Trichlorobenzene
NE
NE
NE
NE
Other
120-36-5
352
2-(2-4-dichlorophenoxy)propionic acid
NE
NE
NE
NE
Other
94-82-6
350
2-4 DB
NE
NE
NE
NE
Other
110-75-8
358
2-Chloroethylvinylether
NE
NE
NE
NE
Other
109-06-8
390
2-Picoline
NE
NE
NE
NE
Other
56-57-5
388
4-nitroquinoline-l-oxide
NE
NE
NE
NE
Other
64-19-7
416
Acetic Acid
5000
NE
NE
NE
Other
62-53-3
381
Aniline
NE
NE
NE
NE
Other
140-57-8
382
Aramite
NE
NE
NE
NE
Other
12674-11-2
401
Aroclor 1016
NE
NE
NE
NE
Other
11104-28-2
402
Aroclor1221
NE
NE
NE
NE
Other
11141-16-5
403
Aroclor1232
NE
NE
NE
NE
Other
53469-21-9
404
Aroclor1242
NE
NE
I NE
NE
Other
12672-29-6
405
Aroclor1248
NE
NE
NE
NE
Other
11097-69-1
406
Aroclor1254
NE
NE
NE
NE
Other
11096-82-5
407
Aroclor 1260
NE
NE
NE
NE
Other
92-87-5
383
Benzidine
NE
I NE
NE
NE
Other
7440-42-8
428
Boron
700
NE
NE
NE
Other
SW347
347
Bicarbonate (as CaCO3)
NE
NE
NE
NE
Other
101-84-8
423
biphenyl ether
I NE
NE
NE
NE
Other
108-86-1
360
1 Bromobenzene
NE
INE
NE
NE
Other
Page 8 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN Z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
SW418
418
Butyric Acid
NE
NE
NE
NE
Other
7440-70-2
375
Calcium
NE
NE
NE
NE
Other
SW413
413
Carbon Dioxide (CO2)
NE
NE
NE
NE
Other
SW348
348
Carbonate (as CaCO3)
NE
NE
NE
NE
Other
12789-03-6
400
Chlordane (constituents)
NE
NE
NE
NE
Other
79-06-1
429
1 Acrylamide
0.008
NE
NE
NE
Other
5103-71-9
379 Chlordane, alpha
NE
NE
I NE
NE
Other
5103-74-2
378 Chlordane, beta
NE
NE
2
NE
Other
5566-34-7
399
Chlordane, gamma
NE
NE
NE
NE
Other
75-99-0
355
Dalapon
200
NE
200
NE
Other
SW318
318
Depth To Water (ft)
NE
I NE
NE
NE
Other
1918-00-9
353
Dicamba
NE
NE
NE
NE
Other
SW334
334
Ferrous Iron- Dissolved
NE
NE
NE
NE
Other
SW427
427
Groundwater Elevation (feet)
NE
NE
NE
NE
Other
SW319
319
Head (ft mean sea level)
NE
NE
NE
NE
Other
70-30-4
387
Hexachlorophene
NE
NE
NE
NE
Other
SW338
338
Hydrogen Sulfide
NE
NE
NE
NE
Other
SW415
415
Lactic Acid
NE
I NE
NE
NE
Other
SW329
329
Landfill Gas
NE
NE
NE
NE
Other
SW374
374
m-&p-Cresol (combined)
NE
NE
NE
NE
Other
92-52-4
421
1,1-biphenyl
400
NE
NE
NE
Other
SW359
359
m-&p-Xylene (combined)
NE
NE
NE
NE
Other
1563-66-2
430
Carbofuran
40
NE
40
NE
Other
107-21-1
424
ethylene glycol
10000
NE
NE
NE
Other
142-82-5
432
Heptane
400
NE
NE
NE
Other
7439-95-4
376
Magnesium
NE
NE
NE
NE
Other
94-74-6
351
MCPA
NE
NE
NE
NE
Other
76-13-1
398
1,1,2-Trichlorotrifluoroethane
200000
NE
NE
NE
Other
93-65-2
354
Mecopop, MCPP
NE
NE
NE
NE
Other
SW333
333
Methane- Dissolved
NE
NE
NE
NE
Other
7439-98-7
397
Molybdenum
NE
NE
NE
NE
Other
108-38-3
409
m-Xylene
NE
NE
NE
NE
Other
Page 9 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 21. 2L IMAC MCL GWP Std Reference List"
SW426
426
N-nitrosodiphenylamine/diphenylamine
NE
NE
NE
NE
Other
SW439
439
N-Nitrosodiphenylamine/Diphenylamine
NE
NE
NE
NE
Other
65-85-0
395
Benzoic Acid
30000
NE
NE
NE
Other
39638-32-9
384
Bis(2-chloroisopropyl) ether
0.03
NE
NE
NE
Other
59-89-2
389
N-Nitrosomorpholine
NE
NE
NE
NE
Other
SW309
309
Coliform (total)
1
NE
5
NE
Other
SW310
310
Color (color units)
15
NE NE
NE
Other
SW336
336
Oxygen Reduction Potential (mV)
NE
NE NE
NE
Other
SW313
313
Foaming Agents
500
NE
NE
NE
Other
SW314
314
Gross Alpha
15
NE
NE
NE
Other
106-43-4
365
4-Chlorotoluene
24
NE
NE
NE
Other
99-87-6
368
p-Cymene
25
NE
NE
NE
Other
108-20-3
366
Isopropyl ether
70
NE
NE
NE
Other
98-82-8
367
Isopropyl benzene
70
NE
NE
NE
Other
76-01-7
380
Pentachloroethane
NE
NE
NE
NE
Other
SW335
335
Manganese- Dissolved
50
NE
NE
NE
Other
108-67-8
373
Mesitylene (1-3-5-trimethylbenzene)
400
NE
NE
NE
Other
7440-09-7
377
Potassium
NE
NE
NE
NE
Other
1634-04-4
369
Methyl-tert-butyl ether (MTBE)
20
NE
NE
NE
Other
104-51-8
361
n-Butylbenzene
70
NE
NE
NE
Other
SW417
417
Propionic Acid
NE
NE
NE
NE
Other
106-42-3
410
p-Xylene
NE
NE
NE
NE
Other
103-65-1
370
n-Propylbenzene
70
NE
NE
NE
Other
95-49-8
364
o-Chlorotoluene
100
NE
NE
NE
Other
110-86-1
391
Pyridine
NE
NE
NE
7
Other
SW414
414
Pyruvic Acid
NE
NE
NE
NE
Other
7440-23-5
322
Sodium
NE
NE
NE
20000
Other
SW323
323
SpecCond (field)
NE
NE
NE
NE
Other
SW307
307
petroleum aliphatic carbon fraction class C19 - C36
10000
NE
NE
NE
Other
SW305
305
petroleum aliphatic carbon fraction class C5 - C8
400
NE
NE
NE
Other
SW306
306
petroleum aliphatic carbon fraction class C9 - C18
700
NE
NE
NE
Other
SW308
308
petroleum aromatics carbon fraction class C9 - C22
200
NE
NE
NE
Other
Page 10 of 11

NC Solid Waste Section
Environmental Monitoring List
Groundwater Protection Standards)
CAS RN z
SWS ID'
DEQ
Calculated
CHEMICAL NAME 2L 2L IMAC MCL GWP Sid Reference List"
SW320
320
pH (field)
7.0
NE
NE
NE
Other
95-63-6
372
Pseudocumene (1-2-4-trimethylbenzene)
400
NE
NE
NE
Other
3689-24-5
392
Sulfotep
NE
NE
NE
NE
Other
SW325
325
Temp (oC)
NE
NE
NE
NE
Other
135-98-8
362
sec -Butyl benzene
70
NE
NE
NE
Other
SW328
328
Top Of Casing (fit mean sea level)
NE
NE
NE
NE
Other
SW425
425
Total BHC
0.02
NE NE
NE
Other
SW436
436
Total Fatty Acids
NE
NE NE
NE
Other
E-10195
357
Total Organic Carbon
NE
NE
NE
NE
Other
98-06-6
363
tert-Butyl benzene
70
NE
NE
NE
Other
SW396
396
Total Organic Halides
NE
NE
NE
NE
Other
SW343
343
Total Suspended Solids
NE
NE
NE
NE
Other
SW411
411
Total Well Depth (ft)
NE
NE
NE
NE
Other
SW330
330
Turbidity
NE
NE
NE
NE
Other
NOTE: G WPSs as listed are current as of April 11, 2022 and are subject to change. Refer to originating sources for any changes.
1 Groundwater Protection Standard (GWPS) - For compliance purposes, the applicable GWPS is the lower of the listed standards.
2 CAS RN = Chemical Abstract Service Registry Number. For listed contituents with no CAS, the SWS ID is used.
3 SWS ID = Solid Waste Section ID. Unique ID assigned by the Section.
4 Constituents Reference Lists
APPENDIX I - Constituents for Detection Monitoring per 40 CFR Part 258 (7-1-2017 Edition)
APPENDIX II - List of Hazardous Inorganic & Organic Constituents per 40 CFR Part 258 (7-1-2017 Edition). Appendix 11 list includes all Appendix 1 constituents.
C&D - Additional monitored constituents required for Construction & Demolition landfills (CDLFs)
LEACHATE - Monitored constituents for leachate sampling as specified in permit conditions.
Other - Other constituents, field testing, field measurements, or miscellaneous data that may be required by the Section.
5 ALL-1,4-Dioxane sampling required for all MSW, C&D, & Industrial landfills (active and closed) per SWS Memo dated May 29, 2018.
GW Protection Standards References
2L - NC groundwater water standards per 15A NCAC 02L .0202
2L IMAC (Interim Maximum Allowable Concentrations) - Interim NC groundwater standards per 15A NCAC 02L .0202
MCL (Maximum Contaminant Level) - National primary drinking water standards per Safe Drinking Water Act under 40 CFR Part 141
NC GWP Std (NC Groundwater Protected Standard) - Groundwater value calculated by NC DEQ for constituents with no established 2L standard. Values are calculated using
criteria 1 & 2 of the NC Groundwater standards and do not consider taste, odor, MCLs, MCLG, and secondary drinking water standards.
Weblink for 40 CFR Part 258
Page 11 of 11

FN
440 S Church Street, Suite 1200
Charlotte, NC 28202-2075
704.338.6700
hdrinc.com
© 2022 HDR, Inc., all rights reserved