6013_GreenwayNorthMeckCDLF_20160526_AssessmentPlan_DIN25974

-i- Contaminant Delineation Plan – 111-370.001 May 26, 2016
TABLE OF CONTENTS

1.0 PURPOSE ...........................................................................................................................1
2.0 BACKGROUND ................................................................................................................2
2.1 Description of the Infill Expansion Area ................................................................ 2
3.0 CHARACTERIZATION OF SITE CONTAMINANT HYDROGEOLOGY .............4
3.1 Site Hydrogeology .................................................................................................. 4 3.2 Potential Source(s) of Detected Contaminants ....................................................... 5
3.2.1 Landfill Leachate .........................................................................................6
3.2.2 Landfill Gas (LFG) ......................................................................................6
3.2.3 Site-Specific Evidence for LFG Impact to Groundwater ............................7
3.3 Vinyl Chloride – Predominant Groundwater Contaminant .................................. 11 3.3.1 Fate and Transport of Vinyl Chloride ........................................................11
3.3.2 Vinyl Chloride Trends ...............................................................................12
3.3.3 Summary of October 2015 Groundwater Monitoring Data .......................13
4.0 RISK ASSESSMENT ......................................................................................................15
4.1 Groundwater Discharge to Surface Water ............................................................ 15 4.1.1 Discharge to Unnamed Tributary Stream ..................................................15
4.1.2 Discharge to Cane Creek ...........................................................................15
4.2 Area Groundwater Supply Wells .......................................................................... 15
4.3 Migrating Landfill Gas Hazards and Structural Vapor Intrusion ......................... 16
4.3.1 Migrating Landfill Gas - Fire, Explosion, and Health Hazards .................16 4.3.2 VOC Vapor Partitioning from Groundwater – Inhalation Health
Hazard ........................................................................................................16
5.0 CONTAMINANT DELINEATION PLAN ...................................................................18
5.1 Proposed Additional Groundwater Impact Investigation ..................................... 18 5.2 Proposed Point of Compliance Monitoring Wells ................................................ 18 5.3 On-Going Evaluation of Landfill Impacts Due to LFG Migration ....................... 19
5.4 Petition to Discontinue Monitoring of Non-Pertinent Appendix II
Analytical Parameters ........................................................................................... 20
5.5 Development of Screening Model for Groundwater Flow and Solute Fate and Transport ........................................................................................................ 21
6.0 SUMMARY ......................................................................................................................22
7.0 REFERENCES .................................................................................................................25

-ii- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Table of Contents (continued)
Page ii

FIGURES

Figure 1 – Site Map
Figure 2 – Groundwater Potentiometric Map
Figure 3 – Groundwater Potentiometric Map
Figure 4 – Methane Monitoring Well Location Map

TABLES

Table 1 – Summary of Recent Site Groundwater Monitoring Data – North Meck C&D Landfill
Infill Expansion Area & Vinyl Chloride Charts for Table 1
Table 2 – Summary of Recent Site Methane Monitoring Data
Table 3 – Landfill Gas and Groundwater Monitoring Well Headspace Vapor Data
Table 4 – Maximum Detected Groundwater VOC Concentrations in Site Landfill Compared with
Maximum Groundwater VOC Concentrations Attributed to Vapor Phase Migration
from Morris (Rust Environmental & Infrastructure)

APPENDIX

Appendix A - Enthalpy Analytical, Inc. Data Report

-1- Contaminant Delineation Plan – 111-370.001
May 26, 2016
1.0 PURPOSE

On behalf of Greenway Waste Solutions of North Meck, LLC, Civil & Environmental
Consultants, Inc. (CEC) has prepared this Contaminant Delineation Plan for the Infill Expansion
Area at the North Meck C&D Landfill facility. The North Carolina Department of
Environmental Quality (NCDEQ) - Solid Waste Section has requested a characterization of the
nature and extent of the groundwater contamination at the Infill Expansion Area. This Plan is
submitted in response to the detection of volatile organic compounds (VOCs) at concentrations
above the 15A NCAC 02L groundwater quality standards (2L Standards) in detection/assessment
monitoring wells at the subject landfill. This Plan proposes:

1) Additional site characterization in the landfill area exhibiting the most elevated
groundwater contaminant concentrations to evaluate migration potential;
2) The installation of two groundwater monitoring well clusters at the eastern perimeter of
the Infill Expansion Area Landfill to serve as detection monitoring wells at the point of
compliance and subsequent routine semi-annual monitoring of these proposed new wells;
3) Evaluation of additional analytical leachate/landfill gas ‟indicator” parameters as a part
of routine landfill monitoring to characterize the source of the groundwater impacts;
4) For six semi-annual groundwater assessment monitoring events, the historical data show
that Appendix II semi-VOCs, herbicides, and PCBs are not of significant concern at the
site. Consequently, GWS is petitioning the Solid Waste Section to amend the assessment
monitoring requirements for the Infill Expansion Area by discontinuing routine groundwater
and surface water sampling and analyses for Appendix II semi-VOCs, herbicides, and
PCBs;
5) Assessment of the need for landfill gas extraction in the Infill Expansion Area; and
6) Development of a screening numerical model to simulate contaminant fate and transport
to further evaluate risk associated with the migration of groundwater contaminants.

-2- Contaminant Delineation Plan – 111-370.001
May 26, 2016
2.0 BACKGROUND

2.1 DESCRIPTION OF THE INFILL EXPANSION AREA

North Meck C&D Landfill is operated by Greenway Waste Solutions of North Meck, LLC
(GWS) under Solid Waste Facility Permit Number 60-13. The facility address is 15300
Holbrooks Road, Huntersville, North Carolina. As shown in Figure 1, the ‟Infill Expansion
Area” consists of three landfill expansion areas including: 1) Expansion Area 1 that is a closed
C&D landfill cell on the west side; 2) Expansion Area 2 that contains Phase 1, 2 and 3 C&D
landfill cells on the east side; and 3) an infill saddle or bridge expansion active C&D landfill cell
that spans portions of Expansion Areas 1 and 2. The Infill Expansion Area is situated in the
northern portion of the landfill property. The Infill Expansion Area is generally bounded by an
unnamed tributary of Cane Creek to the south, beyond which lies a closed landfill area (i.e.
Phase I Closed C&D Landfill). On the west and northwest, the Infill Expansion Area is bounded
by private property, a Colonial Pipeline easement, and land owned by the Town of Huntersville.
To the north, the Infill Expansion Area is bounded by additional GWS landfill property. Land
owned by Mecklenburg County including the David B. Waymer Flying Regional Park (a former
unlined municipal solid waste landfill - Holbrooks Road Landfill) bounds the site to the north
and east. A Site Map is attached as Figure 1.

Waste placement in the closed landfill cell (Expansion Area 1) generally occurred during the
years 2003 to 2007. The area of the closed Expansion Area 1 disposal cell is approximately 13.6
acres. Waste placement in Expansion Area 2 began in 2006, and portions of this area are
presently being used for C&D disposal. The area of Expansion Area 2 is approximately 15.1
acres. The bridge landfill expansion cell was permitted in 2012, and it is currently being used for
C&D disposal. The area of the bridge landfill expansion cell is approximately 16.2 acres.

Semi-annual groundwater monitoring has been conducted along the periphery of the Infill
Expansion Area since 2009. The approximate locations of landfill monitoring wells are shown
on Figure 2. During the July 2013 and subsequent monitoring events, VOCs were detected at
concentrations exceeding the 2L Standards in several wells. VOCs detected in concentrations

-3- Contaminant Delineation Plan – 111-370.001
May 26, 2016
greater than 2L Standards include benzene, methylene chloride, bis (2-ethylhexyl) phthalate, and
vinyl chloride. Vinyl chloride is the predominant VOC in site groundwater and has been
detected in 11 landfill monitoring wells. A summary of recent groundwater sample analytical
data for the Infill Expansion Area is presented in Table 1.

-4- Contaminant Delineation Plan – 111-370.001
May 26, 2016
3.0 CHARACTERIZATION OF SITE CONTAMINANT HYDROGEOLOGY

3.1 SITE HYDROGEOLOGY

Based on the NC Geologic Map (1985), the subject site is underlain by granitic rocks. The local
groundwater system is comprised of two interconnected zones: 1) residual soil/saprolite/weathered
fractured rock (regolith) overlying 2) fractured crystalline bedrock. The regolith layer is vertically
stratified by degree of weathering. A highly weathered and structure-less residual soil occurs near
the ground surface. The residual soil grades into saprolite, a coarser grained material that retains the
structure of the parent bedrock. Beneath the saprolite, partially weathered/fractured bedrock occurs
with depth until sound bedrock is encountered. A transition zone at the base of the regolith has been
interpreted to be present in many areas of the Piedmont. The zone consists of partially
weathered/fractured bedrock and lesser amounts of saprolite that grades into bedrock and has been
described as “being the most permeable part of the system, even slightly more permeable than the
soil zone” (Harned and Daniel 1992).

LeGrand (1988; 1989) developed a conceptual hydrogeologic model of the aforementioned
composite regolith-fractured crystalline rock aquifer system in the Piedmont that is useful for the
description of groundwater conditions. The basic hydrologic entity in this conceptual model is
the surface drainage basin that contains a perennial stream. Each Piedmont drainage basin is
similar to adjacent basins and the conditions are generally repetitive from basin to basin. Within
a basin, movement of groundwater is generally restricted to the area extending from the drainage
divides to a perennial stream. LeGrand refers to this hydrogeologic system as a “slope aquifer
system”. Rarely does groundwater move beneath a perennial stream to another more distant
stream or across drainage divides. Therefore, in most cases in the Piedmont, the groundwater
system is a two-medium system restricted to the local drainage basin (LeGrand 1988).
Groundwater flow paths in the Piedmont are almost invariably restricted to the zone underlying
the topographic slope extending from a topographic divide to an adjacent stream. Under natural
conditions, the general direction of groundwater flow can be approximated from the surface
topography (LeGrand 1989).

-5- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Groundwater potentiometric maps are presented in Figures 2 and 3. Groundwater movement
across the Infill Expansion Area is to the southeast toward the unnamed stream tributary along
the southern boundary of this area. The "V″-shaped potentiometric contours in the vicinity of the
stream tributary are indicative of shallow groundwater discharge from the Infill Expansion Area
to this adjacent stream. Vertical hydraulic gradients were calculated for well clusters MW-
7/MW-7D, MW-8/MW-8D, and MW-9/MW-9D (the respective well pairs are closely spaced to
each other), which are located along the north side of the tributary stream. Upward vertical
gradients of 0.014 to 0.028 feet/foot, respectively, were determined for MW-7/MW-7D and
MW-8/MW-8D. The hydraulic gradient at well cluster MW-9/MW-9D was essentially
horizontal; however, this well cluster is located twice the distance (~50 feet further) from the
stream than the other well pairs. These vertical gradient data indicate groundwater discharge
from the deeper aquifer horizon (110 to 120 feet below grade) to the adjacent stream tributary.

3.2 POTENTIAL SOURCE(S) OF DETECTED CONTAMINANTS

The mechanism for groundwater contamination beneath the subject landfill area is not clearly
understood. The primary source for ground water contamination beneath the landfill occurs
within the buried waste mass. However, two secondary sources – landfill leachate and landfill
gas (LFG) – are the media that typically come into contact with the underlying groundwater,
which if contaminated may result in groundwater impacts. Leachate is not collected at the
landfill; thus, direct analytical data is not available for its evaluation as a potential source of
groundwater impact. Landfill gas (i.e. methane) is monitored on a quarterly schedule in
perimeter wells at the landfill; yet, the monitoring data do not suggest significant lateral LFG gas
migration. No LFG sampling has been conducted within the buried waste mass. To complicate
this source evaluation, downgradient monitoring wells along the southern perimeter of the Infill
Expansion Area are situated in near proximity of the edge of waste such that "migration″ of
neither leachate nor LFG is needed to explain the VOC detections in these groundwater
monitoring wells.

-6- Contaminant Delineation Plan – 111-370.001
May 26, 2016
3.2.1 Landfill Leachate

Leachate is the resultant liquid created when rainfall percolates into the landfill waste mass and
then slowly drains through the waste under gravity. During this process, the leachate picks up
soluble contaminants from the waste itself. Xenobiotic organic compounds in leachate may
include aromatic hydrocarbons, phenols, chlorinated aliphatics, pesticides, and plastizers. With
the exception of phenols, all these organic groups have been observed in the site groundwater.
Inorganic compounds in leachate may include arsenate, barium, borate, cobalt, lithium, mercury,
selenate and sulfide.

If not controlled or collected, leachate can migrate through permeable material that exists under
the landfill. Although geologic materials below the landfill can filter some of the leachate
constituents, the more mobile constituents in the migrating leachate can enter the underlying
groundwater. Where leachate seeps into groundwater, a plume of groundwater contamination
will occur.

3.2.2 Landfill Gas (LFG)

Landfill gas (LFG) is the product of microbiological decomposition of buried organic matter.
Certain microorganisms turn complex organic compounds in landfill waste into methane (~50-
55%), carbon dioxide (~40-45%), and trace amounts of other compounds including hydrogen
sulfide and other sulfur compounds. About 0.2 to 0.5% of LFG is composed of complex organic
compounds that are not biodegraded. Monitoring is important if specific trace compounds are to
be identified.

Appreciable volumes of LFG are generated in landfills in approximately one to three years,
depending on the waste types, amount of moisture or other factors. Peak production of LFG is
typically five to seven years after waste is disposed in the landfill.

The mechanisms for LFG transport are advection and diffusion. Advection transport is a
function of barometric pressure variations and landfill pressure gradients, and it is the primary

-7- Contaminant Delineation Plan – 111-370.001
May 26, 2016
transport mechanism with regard to emissions and migration control strategies. LFG will
migrate vertically or laterally within subsurface materials along the path of least resistance.
Highly impermeable landfill covers will likely promote lateral LFG migration. Diffusion
transport is minor compared to advection; however, this mechanism is associated with the
ultimate transfer of compounds into air, soil, and liquid media.

Some consultants and researchers have recently theorized that landfill gas may be a source of
low-level VOC contamination of groundwater. Low-level VOCs found in LFG and in LFG
condensate are sometimes found in off-site gas and groundwater monitoring wells. Detection
levels range from the low ppb to low parts per million (ppm) levels. The more commonly
identified VOCs reported in LFG are chlorinated aliphatics and aromatic hydrocarbons.

Researchers have found that LFG may be the source of groundwater contamination where:
• The presence of migrating LFG is confirmed in landfill gas monitoring wells;
• A significant increase in leachate ‟indicator” parameters is not associated with the VOCs;
• VOCs are in some cases detected in upgradient monitoring wells;
• Carbon, oxygen, and hydrogen isotopes indicate the lack of relationship between landfill
leachate and the groundwater samples from the impacted well;
• There is a direct relationship between the LFG and gases observed in the headspace of
monitoring wells;
• The VOC detected in groundwater was either the same compound or a degradation product
of the VOC found in the LFG;
• Typical detected VOC parameters are associated with vapor-phase migration in landfills;
• Low levels of VOCs are detected above background values; and
• VOC concentrations in groundwater are reduced during LFG mitigation.

3.2.3 Site-Specific Evidence for LFG Impact to Groundwater

Presence of LFG in Gas Monitoring Wells
In the Infill Expansion Area, the facility performs routine methane monitoring in 11 gas
monitoring wells (MMW-1 through MMW-11). The approximate locations of these gas

-8- Contaminant Delineation Plan – 111-370.001
May 26, 2016
monitoring wells are depicted on the attached Figure 4. Methane levels were recently detected in
MMW-3 at 0.1% methane and 4% LEL, and in MMW-11 at 8.9% methane and >100% LEL.

Association of Leachate Indicator Parameters and Vinyl Chloride

Published studies which characterize the chemical composition of landfill leachates have shown
that sulfate and chloride are conservative (and therefore highly mobile) parameters that exist at
significant concentrations (Gibbons, 1991; USEPA, 1987b). Therefore, in the event of a leachate
release, these mobile indicator parameters, along with alkalinity and total dissolved solids (TDS),
are likely to be the first parameters to be detected.

Leachate "indicator" parameter data are available for several Infill Expansion Area monitoring
wells (MW-1, MW-4, MW-5, MW-7, MW-8, MW-9, and MW-10). Wells MW-1 and MW-10
are background wells located hydraulically upgradient of the landfill. A review of these data
does not show a significant increase in the concentrations of these inorganic indicator parameters
with the initial detection of vinyl chloride in these monitoring wells. Because the low-level
detections of vinyl chloride were not associated with a significant increase in indicator
compounds, migrating LFG is suspected to be the source of the vinyl chloride detected in the
groundwater monitoring wells.

VOCs Detected in Upgradient Monitoring Wells

During the October 2014 monitoring event, vinyl chloride was detected at a concentration of 1.1
ppb in area background monitoring well MW-10.

Isotopic Relationship between Leachate and Groundwater Samples

Site-specific comparative isotopic studies have not been conducted to evaluate a relationship
between landfill leachate and groundwater samples.

-9- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Relationship between LFG and Groundwater Monitoring Well Headspace Gases

A headspace gas sample was collected from MW-9 at the Infill Expansion Area. This sample
was collected in a Summa canister and then submitted with a chain-of-custody record to
Enthalpy Analytical, Inc. for the analyses of hydrogen, oxygen, nitrogen, carbon monoxide,
methane, and carbon dioxide using ASTM D1946-90 (Reapproved 2000), Standard Practice for
Analysis of Reformed Gas by Gas Chromatography. The sample was also analyzed for the TO-
15 Target Compound List using EPA Method TO-15, Determination of VOCs in Air Collected
in Specially Prepared Canisters and Analyzed by Gas Chromatography/Mass Spectrometry
(GC/MS). A tabulated summary of the headspace gas sample analytical results is presented in
the attached Table 3, and the Enthalpy Analytical, Inc. laboratory data report is included in
Appendix A.

Researchers found that a comparison of percent hydrogen, oxygen, nitrogen, carbon monoxide,
carbon dioxide, and methane would indicate a similar chemical fingerprint in the headspace of
both LFG and groundwater wells (Romito and Allendorf. Abstract. Observed Landfill Gas
Effects on Ground Water Quality and Its Identification and Monitoring). They also found that
LFG impact to groundwater may be characterized by an increase in free carbon dioxide, a
decrease in pH, and the detection of low concentrations of VOCs. As summarized in Table 3,
there appears to be a strong correlation of percent hydrogen, oxygen, nitrogen, and carbon
monoxide in the headspace of both LFG and groundwater wells. The correlation is not as
conclusive for carbon dioxide and methane. Low concentrations of VOCs have been detected in
site groundwater.

In his research, Morris did not attempt to correlate the headspace VOC concentrations for gas
and groundwater wells; however, he did use well headspace data to demonstrate that similar
VOCs were being detected in the headspace of gas wells and groundwater monitoring wells
(Morris, Harry H. Abstract. The Potential for Landfill Gas to Impact Ground Water Quality).
For the site-specific VOC data, similar analytes were detected in the headspace of the gas wells
and groundwater well MW-9 Infill.

-10- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Also, Morris used theoretical vapor-to-water partitioning calculations to estimate the magnitude
of VOC vapor concentrations which when partitioned would result in low-level ppb VOC levels
in groundwater, and vice versa. The site-specific headspace VOC concentrations that were
detected were not of sufficient magnitude to result in the detected groundwater VOC
concentrations, and vice versa. We believe that our headspace collection method was not suited
to evaluate VOC concentration data. In his case study, Morris designed special sampling devices
to collect gas samples from the vadose zone gas in the area immediately above the capillary
fringe, and the associated groundwater samples were collected immediately below the
groundwater table. CEC collected samples of headspace gas from a sampling port adapted to the
top-of-casing of a monitoring well - a point significantly above the soil-groundwater interface.
Volumetric dilution within the well and/or vapor loss from the well may be too significant to use
the well headspace data for the theoretical vapor-to-water partitioning concentration calculations.

Relationship between VOCs in Groundwater and VOCs in LFG

As noted in Table 1, the predominant VOCs detected in site groundwater are chlorinated
aliphatic compounds including 1,1-dichloroethane, 1,1-dichloroethene, cis-1,2-dichloroethene,
and vinyl chloride, and aromatic compounds including benzene, ethylbenzene, toluene, and
xylenes. In comparison, as presented in Table 3, cis-1,2-dichloroethene, vinyl chloride, benzene,
toluene, and xylenes were identified in LFG samples. Observation of the same VOCs or
degradation products in site groundwater and LFG is indicative that dissolution of LFG is a
source of VOCs found in groundwater.

Typical VOC Parameters Associated with Vapor Phase Migration in Landfills

Published scientific literature indicates that the more commonly identified VOCs reported in
LFG are benzene, dichlorodifluoromethane, 1,1-dichloroethane, 1,2-dichloroethane, methylene
chloride, tetrachloroethene, trichloroethene, 1,1,1-trichloroethane, toluene, vinyl chloride, and
xylenes. A review of historical groundwater monitoring data for the landfill facility indicates
that the primary VOCs detected are benzene, 1,1-dichloroethane, 1,1-dichloroethene, cis-1,2-
dichloroethene, vinyl chloride, toluene, and xylenes. It is believed that reducing conditions in
the landfill mass may sequentially degrade the primary aliphatic chlorinated VOCs

-11- Contaminant Delineation Plan – 111-370.001
May 26, 2016
(tetrachloroethene → trichloroethene → cis-1,2-dichloroethene → vinyl chloride, and 1,1,1-
trichloroethane → 1,1-dichloroethane → chloroethane) such that the parent and first-order
degradation products are not frequently detected in the groundwater monitoring wells at the
subject landfill.

Low Levels of VOCs Detected above Background Values
Groundwater concentrations associated with vapor to aqueous phase transfer are in the parts per
billion range. Thus, another line of evidence that dissolution of LFG is the source of VOCs
found in groundwater is the detection of low levels of VOCs in landfill groundwater samples.
Morris charted maximum VOC concentrations for ten sites where groundwater VOCs were
attributed to vapor phase contaminant migration. Historical concentration ranges of the primary
VOCs detected in on-site monitoring wells are listed in Column 2 of Table 4. For comparison,
the maximum VOC concentrations charted by Morris are listed in Column 3 of Table 4. The
site-specific maximum VOC levels are lower than the study site levels with the exception of cis-
1,2-dichloroethene. These data show that the site low-level VOC concentrations may be
attributable to vapor phase migration.

3.3 VINYL CHLORIDE – PREDOMINANT GROUNDWATER CONTAMINANT

3.3.1 Fate and Transport of Vinyl Chloride

Vinyl chloride is the predominant contaminant in the area groundwater and appears to present
the most significant concern based upon it prevalence. Vinyl chloride may be a primary
decomposition byproduct of some disposed wastes; however, it seems more likely that vinyl
chloride occurs as an anaerobic degradation byproduct of parent chlorinated aliphatic
compounds. The presence of intermediate degradation byproducts - 1,1-dichloroethene and cis-
1,2-dichloroethene – suggest that such reduction dechlorination is occurring in site groundwater.

Groundwater movement across the Infill Expansion Area will result in the transport and
discharge of groundwater-borne contaminants to the unnamed stream tributary to the south.

-12- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Stream sampling results for the unnamed tributary do not indicate exceedances of the 15A
NCAC 2B Surface Water Standard for vinyl chloride of 2.4 ppb for Human Health.

With regard to fate and transport of groundwater contaminants in deeper groundwater, it is
anticipated that groundwater discharge will either occur in the tributary stream or ultimately into
Cane Creek. Vinyl chloride has not been detected in deeper monitoring wells located along the
east side of the landfill property where the tributary stream exits the site. It was detected in
deeper monitoring wells located along the southeast and south sides of the landfill property.

3.3.2 Vinyl Chloride Trends

Recent groundwater VOC data indicate a significant improvement in site groundwater quality
from the historic maximum VOC levels. As shown in the charts presented with Table 1, vinyl
chloride was initially detected in five Infill Expansion Area detection monitoring wells in the
July 2013 monitoring event. Vinyl chloride concentrations were observed to increase to their
historical maximum detected levels in MW-4, MW-6, MW-7, MW-7D, MW-9, and MW-9D in
either October or December 2013. In two landfill wells MW-2 and MW-5, the historical
maximum VC levels were observed later in April 2014. And in MW-8 and MW-8D, the
historical maximum vinyl chloride levels were observed in April 2015. The Table 1 charts show
a recent overall trend of decreasing vinyl chloride concentrations in site monitoring wells. Vinyl
chloride concentrations were observed to slightly increase in only one monitoring well (MW-7).
Vinyl chloride levels have currently decreased to non-detect in four wells (MW-2, MW-8, MW-
8D, and MW-10).

For most of the deeper monitoring wells, recent vinyl chloride concentrations were observed to
be non-detect. In MW-7D, the vinyl chloride concentration decreased from 2.4 to 1.4 ppb. In
MW-9D, the vinyl chloride concentration decreased from 16 to 15 ppb.

The most elevated VOC levels in area groundwater have been detected in monitoring wells MW-
9 and MW-9D situated in the Expansion Area 1 Closed C&D Landfill in the northwest portion of
the landfill facility.

-13- Contaminant Delineation Plan – 111-370.001
May 26, 2016
3.3.3 Summary of October 2015 Groundwater Monitoring Data

A tabulated summary is presented in this section to update the Solid Waste Section with
additional site data obtained during the October 2015 semi-annual groundwater monitoring event
conducted at the Infill Expansion Area Landfill.

-14- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Monitoring Area VOC Trend Analysis
MW-1 MW-1 is located along the northeast perimeter of the Infill Landfill Area and is an upgradient monitoring well. No VOCs were detected in MW-1. Leachate indicator
parameter values are not elevated
MW-2 MW-2 is located along the east landfill property boundary. No VOCs were detected in MW-
2. Leachate indicator parameter values are not elevated.
MW-3 MW-3 is located to the southeast of the Infill Landfill Area and north of the tributary stream.
No VOCs were detected in MW-3. Leachate indicator parameter values are not elevated.
MW-4 Area

The well cluster MW-4/MW-4D is located to the southeast of the Infill Landfill Area and north of the tributary stream.
MW-4 - VC decreased from 2.0 to 1.6 ppb. Alkalinity, CO2, TDS, Cl, Mn, and NH4 values are elevated above background.
MW-4D - No VOCs were detected. Leachate indicator parameter values are not elevated.
MW-5 Area

The well cluster MW-5/MW-5D is located to the southeast of the Infill Landfill Area and north of the tributary stream.
MW-5 - VC decreased from 6.0 to 3.3 ppb. Alkalinity, CO2, TDS, Cl, and NH4 values are elevated above background.
MW-5D - No VOCs were detected. Leachate indicator parameter values are not elevated.
MW-6 MW-6 is located to the south of the Infill Landfill Area and north of the tributary stream.
VC decreased from 4.2 to 2.5 ppb in MW-6. Alkalinity, CO2, TDS, Cl, and NH4 values are elevated above background.
MW-7 Area

The well cluster MW-7/MW-7D is located to the south of the Infill Landfill Area and north
of the tributary stream. MW-7 - VC increased slightly from 2.7 to 2.8 ppb. Several pesticides, benzene, and 1,1-
dichloroethene were detected. Alkalinity, CO2, TDS, and Cl values are elevated above background.
MW-7D - VC decreased from 2.4 to 1.4 ppb. Benzene, xylenes, and bis (2-ethylhexyl) phthalate were detected. Alkalinity, CO2, TDS, and Cl values are elevated above
background.
MW-8 Area
The well cluster MW-8/MW-8D is located to the southwest of the Infill Landfill Area and north of the tributary stream.
MW-8 – No VOCs were detected. VC has decreased from 5.7 ppb to non-detect. Leachate indicator parameter values are not elevated.
MW-8D – VC decreased from 3.7 ppb to non-detect. Trace levels of 1,1-dichloroethene and trichlorofluoromethane were detected in MW-8D. Leachate indicator parameter values are
not elevated.
MW-9 Area
The well cluster MW-9/MW-9D is located to the southwest of the Infill Landfill Area and north of the tributary stream.
MW-9 - VC decreased slightly from 20 to 19 ppb. Trace levels of benzene and cis-1,2-dichloroethene were detected. Alkalinity, CO2, TDS, and Cl values are elevated above
background. MW-9D - VC decreased slightly from 16 to 15 ppb. Methylene chloride, 1,1-
dichloroethene, and cis-1,2-dichloroethene were detected. Alkalinity, CO2, TDS, and Cl values are elevated above background.
MW-10
MW-10 is located to the northwest of the Infill Landfill Area and is an upgradient
monitoring well. No VOCs were detected in MW-10. Alkalinity, CO2, and TDS values appear to be somewhat elevated.

Table Notes: Cl = chloride; CO2 = carbon dioxide; DCA = dichloroethane; DCE = dichloroethene;
LFG = landfill gas; Mn = manganese; PCE = tetrachloroethene; TCE = trichloroethene; TDS = total dissolved solids; VC = vinyl chloride;
2L Standards = 15A NCAC 2L .0202 Groundwater Quality Standards; µg/L = microgram per liter.

-15- Contaminant Delineation Plan – 111-370.001
May 26, 2016
4.0 RISK ASSESSMENT

Exposure pathways have been identified for the detected site contaminants. An assessment of
exposure pathways and the potential for exposure risk to impacted site groundwater and landfill
gas is presented in this Section.

4.1 GROUNDWATER DISCHARGE TO SURFACE WATER

4.1.1 Discharge to Unnamed Tributary Stream

Groundwater flow patterns in the Infill Expansion Area will result in the transport and discharge
of groundwater-borne contaminants to the unnamed stream tributary to the south. Vinyl chloride
was detected in a tributary stream sample SW-2 at 1.3 ppb in October 2015 and in sample SW-4
at 1.2 ppb in October 2014. These detections are below the 15A NCAC 2B Surface Water
Standard for vinyl chloride of 2.4 ppb for Human Heath. This tributary stream is situated
internally to the landfill facility and is not frequented by the general public.

4.1.2 Discharge to Cane Creek

If not attenuated, contaminant migration via groundwater movement in a southeast direction
from the Infill Expansion Area is anticipated to ultimately discharge to Cane Creek. It is
important to note that the landfill owner has recently purchased land parcels located between the
southern perimeter of the Closed Phase I Landfill and Cane Creek. The base flow in Cane Creek
is significantly higher than in the centrally located tributary stream to the north; therefore, it is
not anticipated that the low VOC concentrations detected in perimeter groundwater monitoring
wells would result in potential exceedances of the surface water standards in Cane Creek.

4.2 AREA GROUNDWATER SUPPLY WELLS

Private residential supply wells located beyond the adjacent Closed Phase I Landfill to the south
and southeast have been made inactive. These residences have been connected to a public water

-16- Contaminant Delineation Plan – 111-370.001
May 26, 2016
system. By removing these receptors, the current exposure pathway via impacted groundwater is
not complete.

With regard to future groundwater use in the area, Mecklenburg County has adopted
Groundwater Well Regulations that restrict the use of existing and new water supply wells in an
Area of Regulated Groundwater Usage (ARGU). ARGUs are established by the County around
sites with reported violations of the 2L Groundwater Quality Standards. The Mecklenburg
Priority List (MPL) was established in 1989 to respond to the need for a more aggressive
program to protect citizens from drinking contaminated groundwater. A site is added to the MPL
when information is provided that reports soil or groundwater contamination. In 1999, landfills
were added as MPL sites. Thus, future groundwater use in the area is restricted by public
institutional controls.

4.3 MIGRATING LANDFILL GAS HAZARDS AND STRUCTURAL VAPOR INTRUSION

4.3.1 Migrating Landfill Gas - Fire, Explosion, and Health Hazards

In the Infill Expansion Area, the facility performs routine methane monitoring in 11 LFG
monitoring wells (MMW-1 through MMW-11). Methane levels were recently detected in
MMW-3 at 0.1% methane and 4% LEL, and in MMW-11 at 8.9% methane and >100% LEL.
These routine methane monitoring readings do not indicate a potential for fire and explosion
hazards in on-site facility structures or at the facility property boundary. Recent routine monthly
methane monitoring data for the Infill Expansion Area are summarized in Table 2.

4.3.2 VOC Vapor Partitioning from Groundwater – Inhalation Health Hazard

Structural vapor intrusion may occur where hazardous VOC vapors partition from groundwater,
migrate beneath a building, and then enter the building. One or more of the identified volatile
contaminants in site groundwater present a potential inhalation health risk due to vapor intrusion.
This exposure pathway is not complete due to the intervening presence of the tributary stream

-17- Contaminant Delineation Plan – 111-370.001
May 26, 2016
and Cane Creek to the south and east, which are local groundwater-to-surface water discharge
features that present a natural barrier to off-site vapor migration.

-18- Contaminant Delineation Plan – 111-370.001
May 26, 2016
5.0 CONTAMINANT DELINEATION PLAN

5.1 PROPOSED ADDITIONAL GROUNDWATER IMPACT INVESTIGATION

The most elevated site groundwater contaminant levels have been detected in the Infill
Expansion Area monitoring wells MW-9 and MW-9D located internal to the landfill property
boundary. CEC recommends that a well cluster (saprolite and bedrock well) be installed 50 feet
from the property boundary to determine if impacted groundwater may be migrating beyond the
landfill property boundary, and also to assess hydraulic gradients in the vicinity of the tributary
stream in this landfill area. The approximate proposed location for this well cluster is shown on
Figures 2 and 3. The monitoring wells will be constructed in accordance with NC well
construction standards.

5.2 PROPOSED POINT OF COMPLIANCE MONITORING WELLS

It is CEC’s understanding that the existing groundwater monitoring wells along the southern
perimeter of the Infill Expansion Area Landfill were made part of the landfill permit because the
adjacent Closed Phase I Landfill to the south was permitted under older solid waste management
rules. The Solid Waste Section determined that downgradient perimeter monitoring wells
situated on the north side of the tributary channel would be needed to distinguish which landfill
areas caused the source of groundwater impact in the event that groundwater contamination was
detected at the facility to apply the appropriate rules.

The subject tributary channel has been observed to be dry for approximately one-half its length
across the landfill property. The eastern half of the channel has been observed to contain
flowing surface water. From a hydrogeologic perspective, groundwater movement from adjacent
portions of the landfill areas on both the north and south side of the tributary channel is initially
toward the channel and then is directed to the east parallel to the channel. Groundwater appears
to move under the dry channel before discharging to the surface in the eastern portion of the
channel. Approximate groundwater potentiometric contours and groundwater flow paths are
depicted on Figure 3 to illustrate this local flow regime. Vertical hydraulic head data recently

-19- Contaminant Delineation Plan – 111-370.001
May 26, 2016
evaluated for several well clusters situated on both sides of the tributary channel indicate an
upward hydraulic gradient in proximity of the channel. As such, groundwater that moves across
the “internal” perimeter wells will continue to flow eastward such that groundwater quality can
be monitored by a detection well network properly sited along the eastern and southeastern
perimeter of the Infill Expansion Area. It is this reason that we believe the internal perimeter
monitoring wells along the tributary channel are not “relevant point of compliance” wells, but do
serve as “sentry” wells to discern from which landfill area the contaminants are sourced, and
they can be utilized to evaluate contamination trends and to review any remedial efforts to
mitigate contamination.

Based on the unique physical site conditions and compliance concerns, CEC is recommending
that a new downgradient groundwater detection monitoring well cluster be installed at the
southeastern corner of the Infill Area landfill in proximity to the intersection of the tributary
creek and landfill property boundary. The approximate proposed location for this well cluster is
shown on Figures 2 and 3. Once installed, the new well cluster along with existing monitoring
wells MW-1, MW-2, and MW-3 are situated in appropriate downgradient locations to monitor
groundwater quality along the eastern perimeter of the Infill Expansion Area such that they can
serve as “relevant point of compliance” monitoring wells for the purpose of reviewing
groundwater quality compliance. Assessment groundwater monitoring of the internal site wells
situated north of the tributary stream within the Infill Expansion Area should be continued to
evaluate contaminant trends and to review any remedial efforts to mitigate contamination.

5.3 ON-GOING EVALUATION OF LANDFILL IMPACTS DUE TO LFG
MIGRATION

Researchers have identified several "indicator" parameters that not only detect landfill impacts
due to leachate and gas migration, but can also distinguish between impacts related to leachate
versus those associated with LFG. These analytical parameters, along with routinely monitored
field analytical measurements, methane, and groundwater VOC data, will be evaluated to ascertain
the most probable source for the observed groundwater impact. The specific indicator parameters
along with their associated indicator characteristics are as follows:

-20- Contaminant Delineation Plan – 111-370.001
May 26, 2016
• Chloride - If values elevated above background; probable source is leachate.
• Ammonia (as Nitrogen) - If values elevated above background; probable source is leachate.
• Total Dissolved Solids - If values elevated above background, probable source is leachate.
• Alkalinity (as Bicarbonate) - If values elevated above background; probable source is LFG.
• Carbon Dioxide - If values elevated above background; probable source is LFG.
• Calcium - If values elevated above background; indication of gas impact if other strong
leachate indicators are not significantly noted.
• Manganese - If values elevated above background; indication of gas impact if other strong
leachate indicators are not significantly noted.
• Arsenic - If values elevated above background, it is an indication of gas impact if other
strong leachate indicators are not significantly noted.

5.4 PETITION TO DISCONTINUE MONITORING OF NON-PERTINENT APPENDIX II ANALYTICAL PARAMETERS
For the Infill Expansion Area Landfill, GWS is currently performing semi-annual groundwater
sampling of 15 groundwater monitoring wells and six surface water locations for Appendix II
analyses. In addition, at the adjacent Closed Phase I Landfill, GWS is currently performing semi-
annual groundwater sampling of 23 groundwater monitoring wells and three water supply wells for
Appendix I analyses. As such, groundwater compliance monitoring costs for the landfill facility are
significant. To determine the Appendix II parameters that are relevant to the site, CEC evaluated
historical monitoring data back to 2013 when contaminants were first detected in site groundwater.
The predominant constituents detected at concentrations exceeding the 2L standards are VOCs
including vinyl chloride, benzene, methylene chloride, and tetrachloroethene; metals including
vanadium, cobalt, chromium, and lead; pesticides including dieldrin and heptachlor; and one semi-
VOC, specifically bis(2-ethylhexyl)phthalate (BEHP). BEHP has been detected one time in two
Infill wells since 2013. Thus, the historical data show that Appendix II VOCs, metals, and
pesticides are pertinent monitoring parameters. Consequently, GWS is petitioning the Solid Waste
Section to amend the assessment monitoring requirements for the Infill Expansion Area by

-21- Contaminant Delineation Plan – 111-370.001
May 26, 2016
discontinuing routine groundwater and surface water sampling and analyses for Appendix II semi-
VOCs, herbicides, and PCBs.

5.5 DEVELOPMENT OF SCREENING MODEL FOR GROUNDWATER FLOW AND SOLUTE FATE AND TRANSPORT

Per NCDEQ’s request, CEC will develop a groundwater flow and solute transport screening model
to predict contaminant migration and evaluate exposure risk. The selected model will have the
capability of conservatively simulating the important processes identified in the conceptual model.
CEC will use sensitivity analysis to define the effect of selected parameters on model results.

-22- Contaminant Delineation Plan – 111-370.001
May 26, 2016
6.0 SUMMARY

The NCDEQ - Solid Waste Section has requested a characterization of the nature and extent of
the groundwater contamination at the Infill Expansion Area of the North Meck C&D Landfill
facility as a result of the detection of VOCs in several landfill monitoring wells. On behalf of
GWS, CEC has prepared this Contaminant Delineation Plan to provide such a site
characterization based upon available site data and to recommend the collection and evaluation
of additional hydrogeologic/groundwater quality data to further assess site conditions.

During the July 2013 and subsequent semi-annual groundwater monitoring events, VOCs were
detected at concentrations exceeding the NC 2L Standards in several Infill Expansion Area
monitoring wells. The detected VOCs include benzene, methylene chloride, bis (2-ethylhexyl)
phthalate, and vinyl chloride. Vinyl chloride is the predominant VOC in site groundwater and
has been detected in 11 landfill monitoring wells. Recent groundwater VOC data indicate a
significant improvement in site groundwater quality from the historic maximum VOC levels.
Vinyl chloride levels have currently decreased to non-detect in four wells (MW-2, MW-8, MW-
8D, and MW-10). For most of the deeper monitoring wells, recent vinyl chloride concentrations
were observed to be non-detect.

The mechanism for groundwater contamination beneath the subject landfill area is not clearly
understood. The buried waste mass is the primary source; however, two potential secondary
sources – landfill leachate and landfill gas – will require further assessment. Leachate is not
collected at the landfill; however, groundwater sample analyses to provide leachate "indicator″
parameters are being evaluated to assess whether leachate is a significant source. Landfill gas
(i.e. methane) is monitored on a quarterly schedule in perimeter wells at the landfill, and the
monitoring data do not suggest significant lateral gas migration. However, gas sampling has not
been conducted within the buried waste mass. To complicate this source evaluation,
downgradient monitoring wells along the southern perimeter of the Infill Expansion Area are
situated in near proximity of the edge of waste such that "migration″ of neither leachate nor LFG
is needed to explain the VOC detections in these groundwater monitoring wells.

-23- Contaminant Delineation Plan – 111-370.001
May 26, 2016
Site-specific groundwater and landfill gas data have been evaluated with regard to several lines
of evidence established by other researchers to assess the potential for migrating gas to impact
groundwater. As discussed in Section 3.2.3, our evaluation suggests that landfill gas may be a
significant source of the observed groundwater impacts at the subject landfill.

Our specific recommendations for the collection and evaluation of additional hydrogeologic and
groundwater quality data to further assess site conditions include the following:

1) Additional site characterization in the landfill area exhibiting the most elevated
groundwater contaminant concentrations in the vicinity of existing well cluster MW-
9/MW-9D to include an addition well cluster (saprolite and bedrock wells) installed 50
feet within the property boundary to determine if impacted groundwater may be
migrating beyond the landfill property boundary, and also to assess hydraulic gradients in
the vicinity of the adjacent tributary stream in this area;
2) The installation of a groundwater monitoring well cluster at the eastern perimeter of the
Infill Expansion Area Landfill to serve as detection monitoring wells at the true point of
compliance, and subsequent routine semi-annual monitoring of these proposed new
detection wells. The existing internal wells will then be used for assessment monitoring.
The proposed monitoring well network for the Infill Expansion Area will consist of the
following wells:
Detection Wells Assessment Wells
MW-1 MW-4/4D
MW-2 MW-5/5D
MW-3 MW-6
MW-10 MW-7/7D
Proposed New Well Cluster @ SE MW-8/8D
Proposed New Well Cluster @ MW-9/9D MW-9/9D

3) Evaluation of additional analytical leachate/landfill gas ‟indicator” parameters as a part of
routine landfill monitoring to characterize the source of the groundwater impacts;
4) For six semi-annual groundwater assessment monitoring events, the historical data show
that Appendix II semi-VOCs, herbicides, and PCBs are not of significant concern at the
site. Consequently, GWS is petitioning the Solid Waste Section to amend the assessment
monitoring requirements for the Infill Expansion Area by discontinuing routine groundwater
and surface water sampling and analyses for Appendix II semi-VOCs, herbicides, and
PCBs;

-24- Contaminant Delineation Plan – 111-370.001
May 26, 2016
5) Assessment of the need for landfill gas extraction in the Infill Expansion Area; and
6) Development of a screening numerical model to simulate contaminant fate and transport
to further evaluate risk associated with the migration of groundwater contaminants.

On behalf of GWS, CEC is requesting that the Division approve this Contaminant Delineation
Plan to evaluate additional landfill gas and groundwater monitoring data to determine the
predominant contaminant source (leachate and/or landfill gas) for the observed groundwater
impact, and to determine the effectiveness of landfill gas extraction as a permanent groundwater
remedy.

-25- Contaminant Delineation Plan – 111-370.001
May 26, 2016
7.0 REFERENCES

Harned, D.A. and C.C. Daniel, III. 1989. The transition zone between bedrock and regolith:
Conduit for contamination? Proceedings of a Conference on Ground Water in the Piedmont of
the Eastern U.S. Charlotte, NC. October 16-18, 1989: pp. 336-348.
Heath, R.C. 1980. Basic elements of ground-water hydrology with reference to conditions in
North Carolina. USGS Water-Resources Open-File Report 80-44, 86 p.
Kerfoot, et al. 2004. Geochemical changes in ground water due to landfill gas effects. Ground
Water Monitoring & Remediation, v. 24, no. 1, Winter 2004, pp. 60-65.
LeGrand, H.E. 1988. Region 21. Piedmont and Blue Ridge. in Hydrogeology, The Geology of
North America. Vol. 0-2, ed. W.B. Back, J.S. Rosenheim, and P.R. Seaber. pp. 201-207.
Geological Society of America, Boulder, CO.
LeGrand, H.E. 1989. A conceptual model of groundwater settings in the Piedmont region. in
Ground Water in the Piedmont, ed. C.C.Daniel, III, R.K. White, and P.A. Stone. Proceedings of
a Conference on Ground Water in the Piedmont of the Eastern U.S. Charlotte, NC. October 16-
18, 1989: pp. 336-348.
Morris, Harry H. The potential for landfill gas to impact ground water quality. Abstract. Rust
Environmental & Infrastructure. Internet at https://info.ngwa.org/GWOL/pdf/950161759.PDF.
North Carolina Geological Survey. 1985. Geologic Map of North Carolina: North Carolina
Geological Survey, General Geologic Map, scale 1:500000.
Romito, A.A. and Allendorf, M.A. 1997. Observed landfill gas effects on ground water quality
and its identification and monitoring. ASCE Toledo and Central Ohio Sections 1997 Spring
Seminar ʺLandfill Gas Management for the 21st Century″.
Smith, et al. 1989. Field investigation to characterize relationship between groundwater and
subsurface gas contamination at a municipal landfill. Superfund ’89: Proceedings of the 10th
National Conference. November 27-19, 1989. Washington, D.C. The Hazardous Materials
Control Research Institute, pp. 251-258.

FIGURES

REFERENCE
8
A
B
34567 12
C
D
E
F
G
H
8 34567 12
A
B
C
D
E
F
G
H
SI
T
E

M
A
P

11
1
-
3
7
0
.
0
0
0
1
1"

=

2
0
0
'
AU
G
U
S
T

2
0
1
5
JK
S
EH
S
EH
S

1
GR
E
E
N
W
A
Y

W
A
S
T
E

S
O
L
U
T
I
O
N
S

O
F
NO
R
T
H

M
E
C
K
,

L
L
C
NO
R
T
H

M
E
C
K
L
E
N
B
U
R
G

L
A
N
D
F
I
L
L
HU
N
T
E
R
S
V
I
L
L
E
,

N
C
NORTH
8
A
B
3
4
5
67
1
2
C
D
E
F
G
H
8
3
4
5
67
1
2
A B C D E F G H
DESCRIPTIONDATENO
REVISION RECORD
333 Baldwin Road · Pittsburgh, PA 15205
412-429-2324 · 800-365-2324
www.cecinc.com
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:
S
H
E
E
T
O
F
F
I
G
U
R
E

N
O
.
:
SITE MAP
111-370.001
1"=200'
MARCH 2016 PNP
EHS
EHS
1
1
2
GREENWAY WASTE SOLUTIONS
AT NORTH MECK, LLC
NORTH MECK LANDFILL
HUNTERSVILLE, NC
NORTH
D
A
T
E
:
D
W
G

S
C
A
L
E
:
D
R
A
W
N

B
Y
:
C
H
E
C
K
E
D

B
Y
:
A
P
P
R
O
V
E
D

B
Y
:
P
R
O
J
E
C
T

N
O
:
F
I
G
U
R
E

N
O
.
:
G
R
O
U
N
D
W
A
T
E
R

P
O
T
E
N
T
I
O
M
E
T
R
I
C

M
A
P
1
1
1
-
3
7
0
.
0
0
1
1
"
=
2
0
0
'
M
A
Y

2
0
1
6
P
N
P
E
H
S
E
H
S
3
G
R
E
E
N
W
A
Y

W
A
S
T
E

S
O
L
U
T
I
O
N
S

O
F
N
O
R
T
H

M
E
C
K
,

L
L
C
N
O
R
T
H

M
E
C
K
L
E
N
B
U
R
G

L
A
N
D
F
I
L
L
H
U
N
T
E
R
S
V
I
L
L
E
,

N
O
R
T
H

C
A
R
O
L
I
N
A
REFERENCE
w
w
w
.
c
e
c
i
n
c
.
c
o
m
1
9
0
0

C
e
n
t
e
r

P
a
r
k

D
r
i
v
e

-

S
u
i
t
e

A

-

C
h
a
r
l
o
t
t
e
,

N
C

2
8
2
1
7
P
h
:

9
8
0
.
2
3
7
.
0
3
7
3

·

F
a
x
:

9
8
0
.
2
3
7
.
0
3
7
2
NORTHLEGEND
DATE:DWG SCALE:
DRAWN BY:CHECKED BY:APPROVED BY:
PROJECT NO:
FIGURE NO.:
LANDFILL GAS EXTRACTION WELL SYSTEM
111-370.0011"=200'JULY 2014
NTB PNP EHS 4
GREENWAY WASTE SOLUTIONS OF
NORTH MECK, LLC
NORTH MECKLENBURG LANDFILL
HUNTERSVILLE, NC333 Baldwin Road · Pittsburgh, PA 15205
412-429-2324 · 800-365-2324
www.cecinc.com
NORTH

TABLES

Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
6.1
5
.
1
2

1
.
1
4
.
1
3

7
.
1
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
Ac
e
t
o
n
e

6

0
.
2
8

0
.
0
4
8

.
Al
u
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1

0
.
0
0
1
1
0.
0
1
0
9
Ba
r
i
u
m

0
.
7

0
.
0
7
3
3

0
.
0
7
0
6

0
.
0
9
5

0
.
1
5

0
.
1

0
.
1
1

0
.
1
3

0
.1
4

0
.
0
5
0
1

0
.
6
3
9

0
.
0
8
2

0
.
19

0
.
1
8

0
.
0
9
6

0
.
0
8
1

0
.
1
5
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
0.
0
0
2
7
0.
0
0
0
4
3
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
42
97
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
0.
0
2
1
4
Co
b
a
l
t

0
.
0
0
1

*
*
0.
0
0
6
6
Co
p
p
e
r

1

0
.
0
3
1
4

0
.
0
1
7

0
.
0
0
2

0
.
0
0
2
8

0
.
0
0
1
4
0.
0
9
5
1
0.
0
0
9

0
.
0
3
7

0
.
0
1
5
0.
0
0
4
9

0
.
0
0
2
5

0
.
0
2
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Di
e
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
al
p
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5

0
.
0
0
2
3
0.
0
2
1
3
0.0
0
2
0

0
.
0
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
0.027
Me
r
c
u
r
y

0
.
0
0
1
0.0
0
0
1
4
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Nic
k
e
l

0
.
1

0
.
0
0
5
1
0.
0
1
9
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
0.0
0
7
9

0
.
0
0
7
4

0
.
0
2
3

0
.
0
0
9
1

0
.
0
0
6
7

0
.
0
0
5
8
0.2
0
6
0.
0
2
3

0
.
0
0
8
5

0
.
0
1
1
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
0.
0
0
7
Zi
n
c

1

0
.
0
1
7
5

0
.
0
1
2

0
.
0
2
8

0
.
04
7

0
.
0
0
4
5

0
.
0
5
2

0
.
0
2
2

0
.
0
2
5

0
.
01
1
8

0
.
1
7
1

0
.
0
4
4

0
.
0
7
1

0
.
0
4
7
0.013

0
.
0
5
2
Al
k
a
l
i
n
i
t
y

N
S

1
2
0

1
2
6

1
3
0

1
3
0

1
7
.
9

1
4
.
4
13

1
1
0
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
18
0
230
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0

2
0
3

2
2
3

2
1
0

3
2
0

2
0
1

2
5
9
27
0

5
0
0
Su
l
f
a
t
e

2
5
0

7
.
6

8
.
2
1

1
5

9
2
.
2

7
4
.
1
14
0
Su
l
f
i
d
e

N
S
1.3
Ch
l
o
r
i
d
e

2
5
0

6
.
5

6
.
9
7

6
.
2

4
5

6
.
4
7

8
.
7
4
6.
6

1
0
*

N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

G
r
o
u
n
d
w
a
t
e
r

S
t
a
n
d
a
r
d
s

(
E
f
f
.

A
p
r
i
l

1
,

2
0
1
3
)

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
o
n

Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
a
r
d
MW
-
1
MW
-
2
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Al
u
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,
4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
ci
s
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Din
o
s
e
b

0
.
0
0
7
Di
e
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bis

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
al
p
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Nic
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vi
n
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zi
n
c

1
Al
k
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*

N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
1
3
12
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4
4.
2
8
.
1
5

1
0
.
2
2
.
1
5

6
.
1
5
.
1
2
1.
1
4
.
1
3

7
.
5
.
1
3

1
0
.
9
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22.14

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
0.0016

0
.
0
0
2
4
0.1
0
7

0
.
0
7
6
7

0
.
0
7
9

0
.
0
7
7

0
.
0
9
4

0
.
06
1

0
.
0
8
1

0
.
1
2

0
.
3
2
8

0
.
0
7
9
4

0
.
6
5
0.
3
3

0
.
5
7

0
.
5

0
.
2
3

0
.
4
8
0.
0
0
1
3
0.0
0
0
5
5

0
.
0
0
1
5
72
69
0.
0
1
8
8

0
.
0
3
0.
0
1
4
2

0
.
0
3
3

0
.
0
4
2

0
.
0
3
1

0
.
0
3
2

0
.
0
4

0
.
0
3
0.
0
0
1
5

0
.
0
0
3
7

0
.
0
0
1
1

0
.
0
0
2
6
0.
0
3
3
1

0
.
0
1
4
8

0
.
0
6
3

0
.
0
0
1
2
0.0
2
1

0
.
0
4
3

0
.
0
0
3
2

0
.
0
0
2
2
0.
0
1
3
0.
0
0
1
7
0.0
6
9
0.
0
0
8
6

0
.
0
1

0
.
0
0
3
3

0
.
0
0
1
3
1.
5
42 0.00016 0.0022
0.
0
1
1
4
0.0
0
1

0
.
0
0
2
6

0
.
0
0
1
8

0
.
0
0
2
2
0.0
0
9
3
0.016

0
.
0
2
7
0.
0
1
5
3

0
.
0
0
6
8

0
.
0
6
3
2

0
.
0
0
6
3

0
.
0
1
2

0
.
0
1
8

0
.
0
0
9
0.0
0
2
3

0
.
0
1
9

0
.
0
1
3

0
.
0
0
8
9

0
.
0
0
1
4

0
.
0
0
2
1

0
.
0
0
1
6
0.
0
1
0
3

0
.
0
1
2
8

0
.
0
1
6

0
.
0
4
1

0
.
0
3
0.0
1
1

0
.
0
2
7
0.
0
8
3
4

0
.
0
1
4

0
.
0
1
1

0
.
0
1
6
0.2

0
.
2

0
.
0
3
2

0
.
0
9
4
25
.
8

2
7
.
5

2
8

5
3
21
8

2
4
8

1
1
0

3
7
0
4.6
14
0
710
31
4

2
6
8

2
6
0

4
2
0
33
9

3
7
3

2
3
0

6
2
0
16
8

1
2
6

1
4
0
23
.
8

6
.
8
8

2
3
11
.
6

7
.
9
5

7
.
7

8
.
4
12
.
1

9
.
9
6

1
2

2
0
MW
-
3
MW
-
4
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bis

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
12
.
9
.
1
3

6
.
1
9
.
1
4

1
0
.
2
2
.
1
4
4.2
8
.
1
5

1
0
.
2
2
.
1
5

6
.
1
5
.
1
2
1.1
4
.
1
3

7
.
5
.
1
3

1
0
.
9
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
0.
0
0
1

0
.
0
0
8
5

0
.
0
0
5
9
0.0
0
1
3

0
.
0
0
1
4

0
.
0
0
1
8
0.0015
0.0
4
1

0
.
0
3
5

0
.
0
5
2

0
.
0
3
4
0.0
3
3

0
.
2
6

0
.
3
7
9

0
.
3
2
0.3
4

0
.
4
8

0
.
3
4
0.
3
4

0
.
3
2
0.00055
0.
0
0
0
1
6
38
120
0.
0
0
9
0.
0
0
9
9

0
.
0
0
5
9
0.0
0
6
9
0.
0
0
8
8

0
.
0
0
5
0.
0
0
4
5

0
.
0
1
7

0
.
0
2
5
0.
0
0
1
3

0
.
0
1
0
5

0
.
0
2
2
9
0.0
0
3
5

0
.
0
1
9

0
.
0
1
9
0.0
0
3
7

0
.
0
0
4
7
0.012
0.
0
0
0
6
6

0
.
0
0
1
1
0.
0
0
1
9
0.0
0
2
3
0.
0
0
0
0
4
7
0.
0
0
1
9

0
.
0
0
5
3

0
.
0
0
8
3
0.0
0
1
8

0
.
0
0
7
4

0
.
0
0
4
6
0.0015
0.0
1
1
4.6
0.
0
0
6
3

0
.
0
0
5
5
0.0052
0.
0
0
1
5
0.0
0
1
9

0
.
0
0
1
4

0
.
0
0
3
0.0
0
2
2

0
.
0
0
2
3
0.0
3
2
0.
0
4
2

0
.
0
0
6
8
0.0
0
8
7

0
.
0
2
3
0.0
0
1

0
.
0
0
1
0.0
0
9
5

0
.
0
3
7

0
.
0
5
0
2
0.
0
1
1

0
.
0
4
1

0
.
0
2
4
0.0068
0.0
0
3

0
.
0
0
6
6
0.0
0
7
7

0
.
0
0
8
6

0
.
0
0
2
8
0.0
0
6
2

0
.
0
0
3
3
0.0
1
4

0
.
0
2
9

0
.
0
2
4
4

0
.
0
1
4
7

0
.
0
3
1
0.1
9

0
.
1
4
0.
0
6
4

0
.
0
6
4
13
0

5
1
7

5
0
8

4
3
0

5
7
0
2.8
14
0
840
22
0
62
5

6
0
7
46
0

7
2
0
4.5
7
.
0
5
5
.
3
20

1
.
4
2
12

3
3
.
1

2
8
.
8

2
5

4
5
MW
-
5
MW
-
4
D
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4
10
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
15

6
.
1
5
.
1
2

1
.
1
4
.
1
5

7
.
5
.
1
3
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4
10
.
2
2
.
1
4

4
.
2
8
.
15

1
0
.
2
2
.
1
5
0.
0
1
4
1
0.0
0
1
2
0.
0
0
1
9
0.
0
1
5

0
.
0
0
3
3
0.
0
6
5

0
.
0
3
5

0
.
0
3
4
0.0
3
2

0
.
0
3
6

0
.
3
5
9
0.1
2
2

0
.
2
2

0
.
2
2

0
.
1
6

0
.
1
5
0.11

0
.
2
3
0.00028
0.
0
0
1
7
0.00015
35
100
0.
0
0
5
2
0.0053
0.
0
0
5
5
0.0
0
3
9

0
.
0
0
3
2

0
.
0
0
1
7
0.0
0
1
7

0
.
0
0
4
6

0
.
0
0
6
7
0.0
1
1

0
.
0
1
1

0
.
0
1
1
0.018
0.
0
1
3
0.
0
0
4
5

0
.
0
0
1
8
0.3
7
3.7
0.0
0
1
5
0.
0
0
1
3

0
.
0
0
2
1
0.
0
0
5
5
0.
0
0
8
4
0.0
0
5
9

0
.
0
1
5
8
0.0
2
5
0.0
0
8
4
0.
0
0
9
1

0
.
0
0
1
1

0
.
0
0
2
3

0
.
0
0
1
3
0.
0
0
4
2

0
.
0
0
2
5
0.0
1

0
.
0
1
7

0
.
0
1
9

0
.
0
1
3

0
.
0
1
2
2
0.0
2
2

0
.
0
6
7

0
.
0
6
9
0.
0
0
1
6

0
.
0
5
4
13
0

4
7
0
36
2

2
7
0
440 0.85
15
0
590
22
0

5
9
1
51
4

3
8
0
610
3.0
6
4.
0
4

4
4
2.
4

1
.
8
12

4
9
.
3
27
.
5

2
0
48
MW
-
5
D

M
W
-
6
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Al
u
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Nic
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zi
n
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
1
3
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4
10
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
22
.
1
5

1
0
.
9
.
1
3

1
2
.
9
.
13

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4
4.28.15

1
0
.
2
2
.
1
5
0.
0
0
1
3

0
.
0
0
1
3

0
.
0
0
1
6

0
.
0
0
3
2

0
.
0
0
1
8
0.
0
7
9
5

0
.
0
8
2
3

0
.
1
5

0
.
1
4

0
.
13

0
.
1
2

0
.
1
1

0
.
1
5

0
.
1
9

0
.
2

0
.
2
2

0
.
2
3

0
.
2
7
0.
0
0
0
5
5
0.
0
0
1
5

0
.
0
0
1
1

0
.
0
0
1
1
0.
0
0
0
9
3

0
.
0
0
1
7

0
.
0
0
0
7
8
0.
0
0
0
2
5

0
.
0
0
0
1
2
53

2
1
0
0.0
0
5
5

0
.
0
0
6
2
0.0
0
5
9

0
.
0
1
3

0
.
0
1
1

0
.
0
0
2
3

0
.
0
0
2
8
0.0
0
3
7

0
.
0
0
2
6

0
.
0
0
2
3

0
.
0
0
2

0
.
0
0
1
0.
0
0
2
0.
0
0
1

0
.
0
0
2
3

0
.
0
0
1
8
0.0
0
1

0
.
0
0
1

0
.
0
0
4
5
0.
0
0
0
1
9
0.
0
0
1
5
0.
0
0
0
0
8
7
0.028 0.0023

0
.
0
0
1
5
0.0033

0
.
0
0
1
8
0.0
0
0
0
6
4

0
.
0
0
0
0
8
9

0
.
0
0
0
0
6
1
0.
0
0
0
1
4
0.0
0
0
2
8
0.
0
0
1
2

0
.
0
0
0
6
2

0
.
0
0
0
1
6
0.0
0
1
5
0.
0
4
2
0.86
0.0
0
0
1
7

0
.
0
0
0
1
7
0.0
0
1
5

0
.
0
1
4
0.0
1
4

0
.
0
1
3

0
.
0
1
2

0
.
0
1
2
0.0
0
1
1

0
.
0
0
1
3

0
.
0
0
2
8

0
.
0
0
3
2
0.
0
2
6
0.
0
0
2
2

0
.
0
0
1
5

0
.
0
0
2
9

0
.
0
0
3
8

0
.
0
0
2
2
0.
0
0
6
4

0
.
0
0
3
6

0
.
0
1
4

0
.
0
0
7
9

0
.
00
6
1

0
.
0
0
6
4

0
.
0
0
8
6

0
.
0
0
6
3

0
.
0
1
3
0.
0
2
7
0.
0
0
7
5

0
.
0
0
7
3

0
.
0
0
5
5
0.
0
0
1
1

0
.
0
0
6
2

0
.
0
0
5
6

0
.
0
0
1
1

0
.
0
0
2
7

0
.
0
0
2
8

0
.
0
0
7
4

0
.
0
0
7
5

0
.
0
0
6
0

0
.
0
0
2
4

0
.
0
0
1
4
0.
0
2
5
1

0
.
0
2
4
4

0
.
0
3
1

0
.
0
8
8

0
.
07
3

0
.
0
6
2

0
.
0
3

0
.
0
7
5

0
.
0
1
9
0.
0
8

0
.
0
9
3

0
.
1
1

0
.
0
5
9
21
0

2
2
3

2
3
0

3
4
0
80
0
37
8

4
0
9

4
2
0

6
2
0
62
.
7

6
0
.
9

8
3
6.8
26
.
5

2
9
.
5

3
1

4
9
MW
-
7

M
W
-
7
D
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Din
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bis

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
1
3
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4
10
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
22
.
1
5

1
0
.
9
.
1
3

1
2
.
9
.
13

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4
4.28.15

1
0
.
2
2
.
1
5
0.
0
0
1
3

0
.
0
0
1
1
0.0
3
6

0
.
0
4
0
5

0
.
0
5

0
.
1
3

0
.
05
3

0
.
0
4
3

0
.
0
4
1

0
.
0
4
8

0
.
0
5
6
0.0
5
2

0
.
0
5
3

0
.
0
5
1

0
.
0
5
5
0.0
0
0
4
7
34

5
4
0.
0
0
0
2
4
0.0
2
7
0.
0
0
6
1
0.
0
0
6
9

0
.
0
2
2

0
.
0
0
5
8
0.
0
0
6
9

0
.
0
2

0
.
0
9
3

0
.
0
0
1
4

0
.
0
0
1
1

0
.
00
8
3

0
.
0
0
5
1

0
.
0
0
3

0
.
0
0
7
6

0
.
0
0
1
1

0
.
0
0
1
7
0.0
0
1
8

0
.
0
0
1
3

0
.
0
0
3
0.0
0
2
6

0
.
0
0
1
8

0
.
0
0
1
2
0.
0
0
4
7
0.
2
7
0.0
2
3
0.
0
0
2

0
.
0
0
3
1

0
.
0
0
3
2
0.0
0
2

0
.
0
0
1
3

0
.
0
0
2
0.
0
2
7
0.0
0
1
6

0
.
0
0
1
2

0
.
0
0
1
9

0
.
0
0
1
9

0
.
0
0
2
2
0.
0
0
9
2

0
.
0
0
7
4

0
.
0
8
7

0
.
0
0
5
2

0
.
0
0
6
7

0
.
0
0
7
3

0
.
0
0
5
6

0
.
0
0
5
4
0.0
0
2
3

0
.
0
0
4
1

0
.
0
0
3
3

0
.
0
0
3
8

0
.
0
0
2
7

0
.
0
0
5
7

0
.
0
0
1
3

0
.
0
0
3
7
0.
0
1
1
2

0
.
0
1
7
5

0
.
0
3
2

0
.
08
3

0
.
0
2
2

0
.
0
3
5

0
.
0
2
4
0.
0
1
1

0
.
0
2
4
0.
0
2
8

0
.
0
1
6
14
0

1
5
4

1
4
0

1
1
0

1
6
0
0.
1
4
27
0

1
6
0
34
2

3
7
9

3
1
0

3
5
0

2
8
0
7.
8
2

7
.
8
5

4
.
9
BD
L

2
.
4

1
.
7
72

7
.
0
7

6
3

7
3

3
1
MW
-
8

M
W
-
8
D
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,
4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
ci
s
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Din
o
s
e
b

0
.
0
0
7
Di
e
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bis

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
al
p
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Nic
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vi
n
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Al
k
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*

N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
1
3
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4
10
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
22
.
1
5

1
0
.
9
.
1
3

1
2
.
9
.
13

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4
4.28.15

1
0
.
2
2
.
1
5
0.
0
0
1
1

0
.
0
0
1

0
.
0
0
1

0
.
0
0
1
2
0.0
2
7
8

0
.
2
5
9

0
.
2
6

0
.
4
0.
9
2
0.5
6

0
.
3
3

0
.
3
5

0
.
2
3
0.
3
6

0
.
3
2

0
.
5
8

0
.
1
5
0.
0
0
1
0

0
.
0
0
1
4

0
.
0
0
1
4

0
.
0
0
1
3

0
.
0
0
1
5
0.
0
0
1
6

0
.
0
0
1
5
74

8
7
0.
0
5
1

0
.
0
2
8
0.
0
0
5
7

0
.
0
2
4
0.
0
1
6
1

0
.
0
0
9

0
.
0
3
3

0
.
0
1
3

0
.
0
0
5
4

0
.
0
1
7
0.
0
0
6
1

0
.
0
1
6

0
.
1
4

0
.
0
7
8

0
.
0
0
1
3

0
.
00
6
2

0
.
0
0
2
2

0
.
0
0
1
5

0
.
0
0
3
7

0
.
0
8
3

0
.
0
0
6
1
0.0
0
1
6
3

0
.
0
0
1
2

0
.
0
0
1
1
0.0
0
1
3

0
.
0
0
1
4

0
.
0
0
1
2
0.0
0
2
2

0
.
0
0
5
8

0
.
0
0
3
7

0
.
0
1
8

0
.
01
6

0
.
1
2

0
.
0
1
8

0
.
0
0
8
7

0
.
0
0
8
8
0.
0
0
1
7

0
.
0
0
2
6

0
.
0
0
4
1

0
.
0
0
3
4

0
.
0
0
1
7
0.0
0
2
9

0
.
0
0
2
6

0
.
0
0
3
7

0
.
0
0
2
4

0
.
00
2
5

0
.
0
0
1
8

0
.
0
0
2
9

0
.
0
0
2
6

0
.
0
0
2
8
0.0
1
3
0.0
0
0
0
5
5

0
.
0
0
0
0
7
7

0
.
0
0
0
0
6
5

0
.
0
0
0
0
6
3
0.000081
0.
0
0
0
2
6

0
.
0
0
0
3
6
0.
0
0
9
4

0
.
0
0
3
3

0
.
0
0
2
9
0.
1
8
0.049
0.0
0
0
9
1
0.
0
1
5
0.0
0
0
5
2
0.0041
0.0
0
1
2

0
.
0
0
1
9

0
.
0
0
1
3
0.0
0
8
9

0
.
0
0
9
3

0
.
0
0
6

0
.
0
0
7
6

0
.
0
0
7
3

0
.
0
0
7
8
0.
0
0
5
9

0
.
0
0
6
6

0
.
0
2
4

0
.
0
1
5
0.
0
1
1

0
.
0
0
5
5

0
.
0
1
4

0
.
0
0
5
4
0.0
0
1
3

0
.
0
0
1
3

0
.
0
0
1
7

0
.
0
0
1
3
0.
0
0
1

0
.
0
0
1
0.
0
0
5
3

0
.
0
0
8
5

0
.
0
0
9
7

0
.
01
2

0
.
0
1
5

0
.
0
1

0
.
0
1
1
0.
0
0
0
9
9

0
.
0
0
0
3
2
0.
0
0
6
4

0
.
0
2
5

0
.
2
1

0
.
0
9
8

0
.
0
0
8
6

0
.
0
8
8
0.
0
3
6

0
.
0
7
3

0
.
0
6
3

0
.
0
3
4

0
.
0
4
6

0
.
0
2
0

0
.
0
1
9

0
.
0
5
7

0
.
0
0
5
9

0
.
0
3
9

0
.
0
3
9

0
.
0
1
6

0
.
0
1
5
0.
0
1
2
8

0
.
0
2
4

0
.
3
4

0
.
2
4

0
.
0
4
1

0
.
07
1

0
.
0
1
6

0
.
1
5

0
.
1
4

0
.
0
9
9

0
.
1
6
17
5

3
2
6

3
1
0

5
8
0

6
4
0
0.
1
1

0
.
1
4
13
0
0

6
7
0
43
0

4
8
9

3
5
0

8
1
0

8
5
0
10
5

7
1
.
3

5
9
1.6

B
D
L

2
.
4

2
.
1
20
.
3

3
2
.
2

4
3

3
5

2
4
MW
-
9
D
MW
-
9
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
0.
5
6
0.
0
3
2
2

0
.
0
3
7

0
.
0
3
5

0
.
0
4
3
0.0
4
2

0
.
0
4
8

0
.
0
4
6

0
.
0
8
8
0.0
2
5
1

0
.
0
2
3
5

0
.
0
2
9

0
.
0
2
9
0.0
3

0
.
0
2
7

0
.
0
3

0
.
0
2
9
10
0
0.0
0
6
6

0
.
0
1
5

0
.
0
0
3
2
0.
0
1
3

0
.
0
0
4

0
.
0
2
1
0.0
0
1
6
0.0
1
5
0.
0
0
1
6

0
.
0
0
1
5

0
.
0
0
2
1

0
.
0
0
2
3

0
.
0
0
1
6
0.
0
0
0
3
7
0.
0
0
8
2

0
.
0
0
7
9
0.0
0
1
1
0.0
1
2
1

0
.
0
1
7

0
.
0
2

0
.
0
2
8

0
.
0
3
3
0.
0
1
5
17
5

1
9
3

1
9
0

2
6
0
50
0
41
3

4
4
2

4
0
0

5
0
0
11
2

1
1
8

1
2
0
21
.
3
20
.
5

2
0
.
7

1
8

1
7
MW
-
1
0
SW
-
1
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
0.0
2
5

0
.
0
2
5
0.3
0.0
9
9
0.0
0
3
5
0.0013
0.
0
3
9
6

0
.
0
3
6
4

0
.
0
4
7

0
.
1
1

0
.
2

0
.
1
3

0
.
0
4
9

0
.
0
9
9

0
.
0
4
3
9

0
.
0
3
6

0
.
0
4
9
0.0
5
6

0
.
0
6

0
.
0
5
1

0
.
0
5
3

0
.
0
9
6
0.0
0
6
3
0.0
0
6
6
0.0
0
2

0
.
0
0
3
5

0
.
0
1
7

0
.
0
0
1
3

0
.
0
0
2
6
0.0
0
5

0
.
0
0
8
5
0.0
0
1
7
0.
0
1
9
0.
0
1
0.
0
0
1
3
0.0
8
5

0
.
0
2
1

0
.
0
2
0.0
1
5

0
.
0
2
7

0
.
0
1
7
SW
-
2
SW
-
3
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Alu
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Ni
c
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zin
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*
N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5
.
13

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
22
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
0.0
0
1
0.0
0
1
7
0.
0
6
2
4

0
.
0
3
4
8

0
.
0
5

0
.
1
2

0
.
0
9
7
0.1
3

0
.
0
7
6

0
.
0
4
2

0
.
0
5
0
3

0
.
0
5
2
0.0
5
5

0
.
0
7
6

0
.
1

0
.
0
3
3

0
.
0
8
5
0.0
0
1
6
0.012
0.0
0
1
0.0
1
2
0.
0
0
2
9
0.
0
0
6
4
0.0
0
1
2

0
.
0
0
0
6
6
0.
0
2
8
9

0
.
0
4
4
0.
0
3
2

0
.
0
2
3
SW
-
4

S
W
-
1
(
P
i
p
e

I
n
f
)
Ta
b
l
e

1
.

S
u
m
m
a
r
y

o
f

R
e
c
e
n
t

S
i
t
e

G
r
o
u
n
d
w
a
t
e
r

M
o
n
i
t
o
r
i
n
g

D
a
t
a

(
C
o
n
t
i
n
u
e
d
)
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
Co
n
s
t
i
t
u
e
n
t
NC
D
E
N
R

St
a
n
d
a
r
d

(m
g
/
L
)

*
Ac
e
t
o
n
e

6
Al
u
m
i
n
i
u
m

N
S
Ar
s
e
n
i
c

0
.
0
1
Ba
r
i
u
m

0
.
7
Be
n
z
e
n
e

0
.
0
0
1
Be
r
y
l
l
i
u
m

0
.
0
0
4

*
*
Ca
d
m
i
u
m

2
Ca
l
c
i
u
m

N
S
Ch
l
o
r
o
f
o
r
m

0
.
0
7
Ch
l
o
r
o
e
t
h
a
n
e

3
Ch
r
o
m
i
u
m

0
.
0
1
Co
b
a
l
t

0
.
0
0
1

*
*
Co
p
p
e
r

1
Ca
r
b
o
n

D
i
s
u
l
f
i
d
e

0
.
7
1,1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e

0
.
0
0
6
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
3
5
1,4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e

0
.
0
0
6
cis
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
7
Di
n
o
s
e
b

0
.
0
0
7
Die
l
d
r
i
n

0
.
0
0
0
0
0
2

*
*
bi
s

(
2
-
E
t
h
y
l
h
e
x
y
l
)

p
h
t
h
a
l
a
t
e

0
.
0
0
3
Et
h
y
l
b
e
n
z
e
n
e

0
.
6
To
l
u
e
n
e

0
.
6
Xy
l
e
n
e
s

0
.
5
He
p
t
a
c
h
l
o
r

0
.
0
0
0
0
0
8
He
p
t
a
c
l
o
r

E
p
o
x
i
d
e

0
.
0
0
0
0
0
4
alp
h
a
-
B
H
C

N
S
be
t
a
-
B
H
C

N
S
ga
m
m
a
-
B
H
C

N
S
Le
a
d

0
.
0
1
5
Ma
n
g
a
n
e
s
e

0
.
0
5
Me
r
c
u
r
y

0
.
0
0
1
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e

0
.
0
0
5
2,
4
-
M
e
t
h
y
l
p
h
e
n
o
l

N
S
Nic
k
e
l

0
.
1
Se
l
e
n
i
u
m

0
.
0
2
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e

0
.
0
0
0
7
Te
t
r
a
h
y
d
r
o
f
u
r
a
n

N
S
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e

2
Va
n
a
d
i
u
m

0
.
0
0
0
3

*
*
Vin
y
l

C
h
l
o
r
i
d
e

0
.
0
0
0
0
3
Zi
n
c

1
Alk
a
l
i
n
i
t
y

N
S
Am
m
o
n
i
a
-
N

N
S
Ca
r
b
o
n

D
i
o
x
i
d
e

N
S
To
t
a
l

D
i
s
s
o
l
v
e
d

S
o
l
i
d
s

5
0
0
Su
l
f
a
t
e

2
5
0
Su
l
f
i
d
e

N
S
Ch
l
o
r
i
d
e

2
5
0
*

N
C
D
E
N
R

S
t
a
n
d
a
r
d

=

1
5
A

N
C
A
C

0
2
L

.
0
2
0
2

**

I
n
t
e
r
i
m

M
a
x
i
m
u
m

A
l
l
o
w
a
b
l
e

C
o
n
c
e
n
t
r
a
t
i
Bo
l
d

v
a
l
u
e
s

e
x
c
e
e
d

t
h
e

N
C
D
E
N
R

S
t
a
n
d
6.
1
5
.
1
2

1
.
1
4
.
1
3

7
.
5.1
3

1
2
.
9
.
1
3

6
.
1
8
.
14

1
0
.
2
2
.
1
4

4
.
2
8
.
1
5
10
.
2
2
.
1
5
0.
1
5
0.
0
0
2
4

0
.
0
0
2
0.0
0
1
3
0.0
3
6
6

0
.
0
5
5

0
.
0
6
6

0
.
0
8
3

0
.
1
2
0.
0
8
1
0.
0
0
1
7
0.0
0
1
4
0.
0
0
1
8
0.0
1
1
2

0
.
0
3
1
0.
0
2
SW
-
2
(
P
i
p
e

E
f
f
)
Ch
a
r
t
s

f
o
r

T
a
b
l
e

1
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1

96
1
8
.
0
1
5
0
0.
0
0
5
0.
0
1
0.
0
1
5
0.
0
2
MW
-
4

Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L

B
D
L
0
0.
0
0
2
0.
0
0
4
0.
0
0
6
0.
0
0
8
0.
0
1
MW
-
6
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L
BD
L
0
0.
0
0
2
0.
0
0
4
0.
0
0
6
0.
0
0
8
0.
0
1
MW
-
5

Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L

B
D
L
0
0.
0
0
1
0.
0
0
2
0.
0
0
3
0.
0
0
4
0.
0
0
5
0.
0
0
6
0.
0
0
7
0.
0
0
8
MW
-
2
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L
BD
L
BD
L
BD
L
BD
L
BD
L
Ch
a
r
t
s

f
o
r

T
a
b
l
e

1
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
0.
0
0
0
0
0.
0
0
1
0
0.
0
0
2
0
0.
0
0
3
0
0.
0
0
4
0
0.
0
0
5
0
0.
0
0
6
0
0.
0
0
7
0
MW
-
7
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L
BD
L
0.
0
0
0
0
0.
0
0
1
0
0.
0
0
2
0
0.
0
0
3
0
0.
0
0
4
0
0.
0
0
5
0
0.
0
0
6
0
0.
0
0
7
0
0.
0
0
8
0
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
MW
-
7
D
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
0
0.
0
0
0
5
0.
0
0
1
0.
0
0
1
5
0.
0
0
2
0.
0
0
2
5
0.
0
0
3
0.
0
0
3
5
0.
0
0
4
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
MW
-
8
D
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L

B
D
L

B
D
L
BDL
0.
0
0
0
0
0.
0
0
1
0
0.
0
0
2
0
0.
0
0
3
0
0.
0
0
4
0
0.
0
0
5
0
0.
0
0
6
0
MW
-
8
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L
BDL
Ch
a
r
t
s

f
o
r

T
a
b
l
e

1
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
0
0.
0
1
0.
0
2
0.
0
3
0.
0
4
0.
0
5
0.
0
6
0.
0
7
0.
0
8
MW
-
9
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L
0
0.
0
1
0.
0
2
0.
0
3
0.
0
4
0.
0
5
0.
0
6
10
.
9
.
1
3

1
2
.
9
.
1
3

6
.
1
8
.
1
4

1
0
.
2
2
.
1
4

4
.
2
8
.
1
5

1
0
.
2
2
.
1
5
MW
-
9
D
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
0
0.
0
0
0
2
0.
0
0
0
4
0.
0
0
0
6
0.
0
0
0
8
0.
0
0
1
0.
0
0
1
2
MW
-
1
0
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BDL
BD
L
BD
L
BD
L
BD
L
BDL
BD
L
0
0.
0
0
0
2
0.
0
0
0
4
0.
0
0
0
6
0.
0
0
0
8
0.
0
0
1
0.
0
0
1
2
0.
0
0
1
4
SW
-
2
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L
BD
L

B
D
L
BDL
BD
L
BD
L
DBL
Ch
a
r
t
s

f
o
r

T
a
b
l
e

1
No
r
t
h

M
e
c
k

C
&
D

L
a
n
d
f
i
l
l

-

I
n
f
i
l
l

E
x
p
a
n
s
i
o
n

A
r
e
a
CE
C

P
r
o
j
e
c
t

N
o
.

1
1
1
-
3
7
0
.
0
0
1
0
0.
0
0
0
2
0.
0
0
0
4
0.
0
0
0
6
0.
0
0
0
8
0.
0
0
1
0.
0
0
1
2
0.
0
0
1
4
SW
-
4
Vi
n
y
l

C
h
l
o
r
i
d
e

T
r
e
n
d

(
m
g
/
L
)
BD
L

B
D
L
BD
L
BD
L
BD
L
BD
L
Table 2. Summary of Recent Site Methane Monitoring Data
Infill Expansion Area Landfill
CEC Project No. 111-370.001
Sample Date
Well ID 1/19/14 5/8/14 1/9/15 7/24/15 10/22/15
MMW-1 0.0 0.0 0.0 0.0 0.0
MMW-2 0.1 0.4 0.0 0.0 0.0
MMW-3 1.6 4.3 0.2 5.3 7.8
MMW-4 0.1 0.0 0.0 0.0 0.0
MMW-5 0.0 0.0 0.0 0.0 0.0
MMW-6 0.0 0.0 0.0 0.0 6.7
MMW-7 0.0 0.0 0.0 0.0 0.0
MMW-8 0.0 0.0 0.0 0.0 0.0
MMW-9 0.0 0.0 0.0 0.0 0.0
MMW-10 0.0 0.0 0.0 0.0 0.0
MMW-11 2.4 3.7 10.7 12.5 17.3
% Methane
0.0%
2.0%
4.0%
6.0%
8.0%
10.0%
12.0%
14.0%
16.0%
18.0%
20.0%
1/1/14 7/1/14 1/1/15 7/1/15
%
M
e
t
h
a
n
e
Perimeter LFG Sampling Results
MMW-2
MMW-3
MMW-4
MMW-11
Table 3
Landfill Gas and Groundwater Monitoring Well Headspace Vapor Data
North Meck C&D Landfill
CEC Project No. 111-370.001
Carbon Dioxide
Carbon Monoxide
Hydrogen
Methane
Nitrogen
Oxygen
ppbv µg/m3 ppbv µg/m3 ppbv µg/m3 ppbv µg/m3
Propylene ND ND 39.9 69.8 2.37 4.14
Dichlorodifluoromethane (Freon 12) 1.14 5.72 0.672 3.38 1.33 6.69 0.632 3.18
Chloromethane 0.678 1.42 0.786 1.65 0.734 1.54 0.877 1.84
Vinyl Chloride 0.231 0.601 0.278 0.721 0.25 0.649 0.879 2.28
Bromomethane 0.965 3.81 ND ND ND ND ND ND
Chloroethane 1.65 4.41 ND ND 0.589 1.58 0.797 2.14
Trichlorofluoromethane (Freon 11) 0.244 1.4 0.276 1.57 0.257 1.47 0.237 1.35
Ethanol 18.1 34.6 3.22 6.16 3.33 6.38 4.97 9.52
Acrolein ND ND 0.626 1.46 ND ND 0.685 1.6
Trichlorotrifluoroethane (Freon 113) ND ND ND ND 0.109 0.847 0.107 0.83
Acetone 130 313 13.3 32 16.3 39.3 7.78 18.8
Carbon Disulfide 0.368 1.16 0.119 0.377 0.214 0.676 0.284 0.898
Isopropyl Alcohol 6.37 15.9 1.99 4.97 0.943 2.35 2.7 6.75
Methylene Chloride ND ND 0.207 0.73 ND ND ND ND
Hexane 16.6 59.4 9.97 35.7 16.6 59.4 0.231 0.828
1,1-Dichloroethane ND ND ND ND 0.139 0.572 0.651 2.68
Vinyl Acetate 0.0958 0.343 ND ND ND ND ND ND
cis-1,2,-Dichloroethene ND ND 0.14 0.565 0.13 0.524 0.472 1.9
2-Butanone (MEK)ND ND 0.872 2.61 6.11 18.3 1.02 3.05
Tetrahydrofuran ND ND ND ND 13.1 39.3 0.0961 0.288
Cyclohexane 18 62.9 2.5 8.73 3.93 13.7 ND ND
Carbon Tetrachloride 0.0952 0.609 0.109 0.7 0.105 0.672 0.106 0.68
Benzene 5.57 18.1 2 6.51 0.538 1.75 0.263 0.854
2,2,4-Trimethylpentane 106 503 6.42 30.5 4 19 ND ND
Heptane 2.57 10.7 2.93 12.2 4.68 19.5 0.216 0.902
1,2-Dichloropropane ND ND 0.183 0.86 ND ND ND ND
Methyl Isobutyl Ketone ND ND ND ND ND ND 0.0929 0.387
Toluene 0.798 3.06 0.991 3.8 0.486 1.86 0.395 1.51
Tetrachloroethene 0.14 0.965 0.935 6.44 ND ND ND ND
2-Hexanone ND ND ND ND ND ND 0.143 0.595
Ethylbenzene 0.219 0.968 0.201 0.885 0.183 0.806 0.111 0.491
m-/p-Xylenes 0.738 3.26 0.53 2.34 0.364 1.6 ND ND
o-Xylene 0.2 0.884 ND ND 0.142 0.627 ND ND
1,2,4-Trimethylbenzene 0.129 0.646 0.13 0.648 0.0989 0.494 ND ND
1,3,5-Trimethylbenzene ND ND 0.0866 0.433 ND ND ND ND
ppbv = parts per billion per volume
µg/m3 = micorgrams per cubic meter
19.6
0.355
0.0922
0.124
0.074
74.5
19.4
0.131
0.0914
0.123
0.0734
75.5
MW-9-INFILLMW-4D-1
0.131
0.0913
0.122
Percent (%)
74.6
19.4
GW-3 GW-6
6.04
0.0904
0.121
2.5
70.4
16.9
0.0733
Table 4
Maximum Detected Groundwater VOC Concentrations in Site Landfill
Compared with Maximum Groundwater VOC Concentrations
Attributed to Vapor Phase Migration
from Morris (Rust Environmental & Infrastructure)
Analyte
Maximum VOC Concentration
in Site Landfill Wells (µg/L)
Maximum VOC Concentration
Attributed to Vapor Phase
Migration from Morris 1
Chlorinated VOCs
1,1-Dichloroethane 3.3 120
1,1-Dichloroethene 3.7 ND
cis-1,2-Dichloroethene 54 10
Vinyl Chloride 27 42
Aromatic VOCs
Benzene 2.7 17
Ethylbenzene 1.5 34
Toluene 7.4 140
Xylenes 8.1 ND
ND = No Data Available
1 Data from Table 3 in Morris, Harry H. The Potential for Landfill Gas to Impact
Ground Water Quality. Abstract. Rust Environmental & Infrastructure (see below).

APPENDIX A