SIXTH FIVE-YEAR REVIEW REPORT FOR
SKINNER LANDFILL SUPERFUND SITE
BUTLER COUNTY, OHIO
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Table of Contents
LIST OF ABBREVIATIONS & ACRONYMS 2
I. INTRODUCTION 3
FIVE-YEAR REVIEW SUMMARY FORM 4
II. RESPONSE ACTION SUMMARY 4
Basis for Taking Action 4
Response Actions 5
Status of Implementation 6
Institutional Controls 7
Systems Operations/Operation & Maintenance 9
III. PROGRESS SINCE THE LAST REVIEW 11
Community Notification, Involvement & Site Interviews 13
Data Review 13
Site Inspection 16
V. TECHNICAL ASSESSMENT 16
QUESTION A: Is the remedy functioning as intended by the decision documents? Yes 16
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action
objectives (RAOs) used at the time of the remedy selection still valid? Yes 17
VI. ISSUES/RECOMMENDATIONS 18
OTHER FINDINGS 19
VII. PROTECTIVE NESS STATEMENT 19
VIII. NEXT REVIEW 20
APPENDIX A - REFERENCE LIST 21
Figures and Tables
Table 1 Summary of Planned and/or Implemented ICs
Table 2 Protectiveness Determinations/Statements from the 2019 FYR
Table 3 Status of Recommendations from the 2019 FYR
Attachments
Attachment 1 Skinner Site Maps
Attachment 2 Trigger Levels
Attachment 3 Copy of Environmental Covenant
Attachment 4 Site Inspection Checklist
Attachments Newspaper Ad
Attachment 6 Mann-Kendall Concentration Trend Summary
Attachment 7 Comparison of Pilot Test to Pre-Pilot Test Dissolved Metal Concentrations
Attachment 8 Groundwater Elevation and Gradient Data (2014 - 2022)
Attachment 9 Groundwater Potentiometric Surface Maps
Attachment 10 Monitoring Well and Piezometer Hydrographs (2014 - 2022)
Attachment 11 Analytical Data Summary Tables (2016 - 2022)
Attachment 12 Statistical Analysis Output (2016 - 2022)
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LIST OF ABBREVIATIONS & ACRONYMS
ARARs Applicable or Relevant and Appropriate Requirements
BCDES Butler County Department of Environmental Services
bgs below ground surface
CD Consent Decree
CERCLA Comprehensive Environmental Response, Compensation, and Liability Act
CFR Code of Federal Regulations
CQA Construction Quality Assurance
DNAPL Dense Non-Aqueous Phase Liquid
EPA United States Environmental Protection Agency
FML Flexible Geomembrane Liner
FS Feasibility Study
FYR Five-Year Review
GCL Geosynthetic Clay Liner
GIS Groundwater Interception System
ICs Institutional Controls
LTPP Long Term Performance Plan
MCL Maximum Contaminant Level
NCP National Contingency Plan
NPL National Priorities List
O&M Operation and Maintenance
Ohio EPA Ohio Environmental Protection Agency
OU Operable Unit
PCBs Polychlorinated Biphenyls
PCOR Preliminary Close Out Report
PFAS perfluoroalkyl and polyfluoroalkyl substances
ppm parts per million
PRPs Potentially Responsible Parties
PTP Pilot Test Plan
RA Remedial Action
RAOs Remedial Action Objectives
RD Remedial Design
ROD Record of Decision
RPM Remedial Project Manager
Site Skinner Landfill Superfund Site
SVE Soil Vapor Extraction
SVOCs Semi-Volatile Organic Compounds
SWRAU Site Wide Ready for Anticipated Use
UAO Unilateral Administrative Order
UECA Uniform Environmental Covenants Act
VOCs Volatile Organic Compounds
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I. INTRODUCTION
The purpose of a Five-Year Review (FYR) is to evaluate the implementation and performance of a
remedy in order to determine whether the remedy is and will continue to be protective of human
health and the environment. The methods, findings, and conclusions of reviews are documented in FYR
reports such as this one. In addition, FYR reports identify issues found during the review, if any, and
document recommendations to address them.
The United States Environmental Protection Agency (EPA) is preparing this FYR pursuant to the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Section 121,
consistent with the National Contingency Plan (NCP)(40 CFR Section 300.430(f)(4)(ii)), and considering
EPA policy.
This is the sixth FYR for the Skinner Landfill Superfund Site (Site). The triggering action for this statutory
review is the completion date of the previous FYR on March 27, 2019. The FYR has been prepared due
to the fact that hazardous substances, pollutants, or contaminants remain at the Site above levels that
allow for unlimited use and unrestricted exposure (UU/UE).
The Site consists of two Operable Units (OUs), both of which will be addressed in this FYR. OU1 was an
interim action to protect human health from any immediate potential risks. OU1 included Site fencing,
connections to the Butler County public water system for potentially affected local users of
groundwater, and groundwater monitoring. OU2 addressed potential future migration of Site
contaminants into groundwater and limited direct exposure to Site contaminants to humans through
source control measures (landfill cap and groundwater interception system).
The Skinner Landfill FYR was led by Scott Hansen, EPA Remedial Project Manager (RPM) for the Site.
Participants included Leslie Williams, State Project Manager with the Ohio Environmental Protection
Agency (Ohio EPA). The Potentially Responsible Parties (PRPs) were notified of the initiation of the FYR.
The review began on 4/4/2023.
Site Background
The Site is located approximately 15 miles north of Cincinnati, Ohio, near West Chester, Butler County,
Ohio, in Township 3, Section 22, Range 2. The entire Skinner property is comprised of approximately 78
acres of hilly terrain (Attachment 1). The Site (approximately 10.5-acre landfill) was used in the past for
the mining of sand and gravel and was operated for the landfilling of a wide variety of materials from
approximately 1934 through 1990. Materials deposited at the Site include demolition debris,
household refuse, and a variety of chemical wastes. The Site is bordered on the east by a Norfolk
Southern Railway Company right-of-way, on the south by the East Fork of Mill Creek, on the north by
wooded and agricultural land, and on the west by a gravel driveway and Cincinnati-Dayton Road.
The Site, which is part of the 78 acres, is fenced on all sides with locked access gates on the south and
west sides of the landfill site. The only structures on the landfill site are the metal electrical box located
near the south entrance gate and the gas vents. A gravel access road is located inside the fence on the
south and west sides of the landfill.
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In 1982, EPA conducted a limited Site investigation for the purpose of scoring the Site for inclusion on
the National Priorities List (NPL). The investigation showed that groundwater southeast of the buried
waste lagoon was contaminated with volatile organic compounds (VOCs). The Site was proposed for
the NPL in December 1982 and finalized in September 1983.
FIVE-YEAR REVIEW SUMMARY FORM
SITE IDENTIFICATION
Site Name: Skinner Landfill
EPA ID: OHD063963714
Region: 5
State: OH
City/County: West Chester/Butler County
NPL Status: Final
Multiple OUs?
Yes
Has the site achieved construction completion?
Yes
Lead agency: EPA
[If "Other Federal Agency", enter Agency name]:
Author name (Federal or State Project Manager): Scott Hansen
Author affiliation: EPA
Review period: 4/4/2023 - 10/30/2023
Date of site inspection: 10/4/2023
Type of review: Statutory
Review number: 6
Triggering action date: 3/27/2019
Due date (five years after triggering action date): 3/27/2024
II. RESPONSE ACTION SUMMARY
Basis for Taking Action
Contaminants of Concern (COCs)
The contaminants in soil, sediment, groundwater, surface water and leachate contributing the most
significantly to current and future site risks included: VOCs, such as carbon tetrachloride, vinyl chloride,
benzene, chloroform, dichloroethene and bis(2-chloroethyl)ether; pesticides, such as heptachlor,
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aldrin, dieldrin, chlordane, and hexachlorobenzene; polychlorinated biphenyls (PCBs), specifically
Arochlor 1254; and inorganic compounds, such as arsenic and cobalt.
Risk Characterization
Because the Site accepted a variety of wastes, numerous chemicals are present at the Site. Following
the remedial investigation, EPA conducted an evaluation to estimate the potential health or
environmental problems that could result if the Site was not remediated. EPA evaluated the health
risks associated with 114 different contaminants.
Human Health
The risk assessment (Rust, Inc., 1992) concluded that the potential routes of current and future
exposure above a Hazard Index (HI) of 1 and cancer risk above 1 x 10~4 included: ingestion of and direct
contact with contaminated soils; ingestion of affected groundwater; dermal contact with groundwater;
inhalation of chemicals that volatilize from groundwater to air during showering; and ingestion of and
direct contact with surface water and sediments during recreational activities. Inhalation of fugitive
dust and volatile chemicals was also evaluated qualitatively as a potential exposure route but did not
warrant a quantitative assessment because emissions from surface soil would likely be low. This is
because the most contaminated portion of the Site, the buried waste lagoon, is covered by up to 40
feet of demolition debris and is not considered a source of inhalation risk under the current conditions.
Ecological Risks
For ecological risks, it was also projected that, under the "no action" scenario, surface water standards
may be exceeded in the future in the East Fork of Mill Creek for the following compounds: benzene,
carbon tetrachloride, chloroform, 1,1,2,2-tetrachloroethane, toluene, 1,1,1- trichloroethane, 1,1,2-
trichloroethane, trichloroethene, bis(2-chloroethyl)ether, phenol, aldrin, dieldrin, and Aroclor 1254.
Response Actions
Past Response Actions
EPA organized the remedial action (RA) at the Site into two phases, by area of concern or OUs. The first
phase was for an interim action at OU1 to protect human health from any immediate potential risks.
EPA's Record of Decision (ROD) for the first OU interim action was signed on September 30, 1992 (EPA,
1992). The remedy selected in the ROD included Site fencing, connections to the Butler County public
water system for potentially affected local users of groundwater, and groundwater monitoring.
EPA signed the ROD for the second and final OU2 on June 4, 1993 (EPA, 1993). The 1992 interim
remedy was ultimately incorporated and finalized as part of the OU2 ROD. The major components of
the selected remedy included:
• Construction of a hazardous waste landfill cap over the waste-materials,
• Construction of a Groundwater Interception System (GIS),
• Diversion of upgradient groundwater flow,
• Monitoring,
• Institutional controls (ICs), and
• Soil vapor extraction (SVE).
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In September 2012, EPA issued an Explanation of Significant Differences (ESD) for the Site that
eliminated the need for the Skinner PRP work group to incorporate the upgradient groundwater
control remedy, a provision that was included in the 1993 ROD (EPA, 2012). The ESD concluded that
groundwater in contact with waste materials beneath the landfill cap has not resulted in
contamination of the groundwater above the site-specific Trigger Levels (Attachment 2) and does not
affect the protectiveness of the selected remedy.
Remedial Action Objectives (RAOs)
The remedial objective for OU1 is protection of human health only. Protection of the environment will
be achieved by future OUs that address contaminated groundwater and on-site sources of
contamination. The RAOs for the second and final OU2 addressed potential future migration of Site
contaminants into groundwater and limited direct exposure to Site contaminants to humans through
source control measures. The RA addressed the source of the contamination by intercepting and
treating on-Site groundwater. The function of this action was to control the landfill Site as a source of
groundwater contamination; to reduce the risks associated with the Site and reduce exposure to
contaminated materials; and to prevent untreated leachate from running off Site. The groundwater
response action includes long-term monitoring with Site-specific groundwater Trigger Levels. The site-
specific Trigger Levels were drawn from the risk assessment. If the site-specific groundwater Trigger
Levels are exceeded in downgradient groundwater monitoring wells, EPA will consider whether
additional RAs are necessary to address groundwater conditions. The ROD also required an
investigation to determine the feasibility for SVE in the granular soil adjacent to the buried lagoon.
Status of Implementation
EPA issued a Unilateral Administrative Order (UAO) (EPA, 1992) to the PRPs to implement the remedy
selected in the 1992 ROD (EPA, 1992). Several PRPs complied with the UAO and installed a fence
around the Site, completed connections to the Butler County public water system for potentially
affected local users of groundwater, and implemented groundwater monitoring from 1992 to 1994.
A Remedial Design (RD) Investigation was performed in 1994 to collect data required to assess the
feasibility of the SVE and to design the multi-media cap and the groundwater extraction/treatment
system (Rust, Inc., 1996). Based on the RD investigation, EPA determined that the installation of a SVE
system was not feasible.
Judge Weber of the Federal District Court in Cincinnati, Ohio, signed the Remedial Action Consent
Decree (CD) for implementation of the final OU remedy on April 2, 2001 (EPA, 2001). The PRP group
constructed the landfill cap and the GIS under the requirements of the CD. Construction began in April
2001 and was completed in September 2001.
The profile of the installed landfill cap from top down includes vegetative cover materials,
geocomposite drainage layer, flexible geomembrane liner (FML) primary barrier layer, geosynthetic
clay liner (GCL) secondary barrier layer, geocomposite gas venting layer and the prepared subgrade.
The GIS was installed to intercept and capture groundwater migrating from the landfill to the East Fork
of Mill Creek. Soils from two contaminated areas located outside the landfill area, but within the limits
of the Site, were excavated and moved to the on-Site landfill and incorporated under the landfill cap.
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Monitoring wells and piezometers were installed in and around the landfill to: 1) monitor the
groundwater elevation under the cap to determine contact with buried waste, and 2) assess the long-
term performance of the groundwater interception system (interception trench and cut-off wall) in
accordance with the Long-Term Performance Plan (LTPP) (see Systems Operations/Operation &
Maintenance) (Earth Tech, 2003).
The remedy also restricts physical access to the Site with a six-foot high fence with barbed wire at the
top, around the entire Site landfill perimeter. The fence is sufficient to prevent the public from easily
entering the Site landfill. The fence is posted with numerous visible warning signs to inform the public
of potential Site hazards. As stated earlier, nearby residences located southwest of the Site were
connected to a public water supply in order to prevent these residents from potential exposure to
contaminated groundwater.
The RA construction was completed at the Site in September 2001. A Preliminary Close Out Report
(PCOR), documenting sitewide construction completion was completed on September 27, 2001 (EPA,
2001).
In August 2007, Ohio EPA was notified via a complaint that assorted electronic waste (e-waste) was
being stored in open containers along the southwestern portion of the fence surrounding the Skinner
Landfill. Ohio EPA investigated the complaint and identified 78 one-cubic-yard cardboard containers of
crushed computer glass and a roll-off container of assorted computer parts, including intact monitors
and hard drives. The waste was being stored in an uncovered location and the weather was causing the
containers to deteriorate rapidly.
Ohio EPA sampled the waste material and determined it to be hazardous waste based on its high lead
content. In February 2008, Ohio EPA issued Notices of Violation to the waste generator and to Skinner
Demolition, requiring abatement of the illegal storage of hazardous waste. Neither party submitted a
compliance plan to Ohio EPA. In March 2008, Ohio EPA requested assistance from EPA with the
assessment, removal, and disposal of the hazardous waste.
EPA confirmed that the waste exceeded hazardous waste regulatory limits for lead. After both parties
failed to submit a response to EPA's Notice of Liability, EPA initiated a time-critical removal of the
hazardous waste. EPA and its contractors began the cleanup on June 9, 2008. Approximately 131 tons
of hazardous waste, including crushed cathode ray tubes, e-waste, and contaminated soil were
disposed of at the Michigan Disposal Waste Treatment Plant in Belleville, Michigan. EPA completed this
removal action on June 11, 2008.
Institutional Controls
ICs are non-engineered instruments, such as administrative and legal controls, that help to minimize
the potential for exposure to contamination and that protect the integrity of the remedy. ICs are
required to assure long-term protectiveness for any areas which do not allow for UU/UE. ICs are also
required to maintain the integrity of the remedy.
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The ICs currently in place for the Site are listed in Table 1 below. A map showing the area in which the
ICs apply is included in Appendix B, Attachment 3 to this FYR.
Table 1: Summary of Planned and/or Implemented ICs
Media, engineered
controls, and areas
that do not support
UU/UE based on
current conditions
ICs
Needed
ICs Called
for in the
Decision
Documents
Impacted
Parcel(s)
IC
Objective
Title of IC
Instrument
Implemented and
Date (or planned)
RA components such
as wells, and GIS
Yes
Yes
See
Attachment
3
Prohibits use
of land
underlying the
Site, and
assures the
integrity of
remedy
components
Environmental
Covenant
pursuant to Ohio
Uniform
Environmental
Covenants Act
(UECA), recorded
at Butler County,
Feb. 14, 2006
Landfill Cap
Yes
Yes
See
Attachment
3
Prohibits use
of land
underlying the
Site, and
assures the
integrity of the
landfill cap
Environmental
Covenant
pursuant to Ohio
Uniform
Environmental
Covenants Act
(UECA), recorded
at Butler County,
Feb. 14, 2006
Groundwater - area
that exceeds cleanup
levels
Yes
Yes
See
Attachment
3
Prohibits use
of
Groundwater
Environmental
Covenant
pursuant to Ohio
Uniform
Environmental
Covenants Act
(UECA), recorded
at Butler County,
Feb. 14, 2006
Status of Access Restrictions and ICs
Current compliance
The PRPs updated the title commitment and survey for the ICs in July 2009. Based on Site inspections
and interviews, EPA finds there is no evidence of a cap breach, and the existing use is consistent with
the objectives of the landfill cap and land use restrictions. EPA confirmed during the FYR Site
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inspection, the ICs remain in place and the objectives of the ICs are being met. In addition, the fence
and warning signs are in place.
Long-Term Stewardship
Long-term protectiveness at the Site requires compliance with use restrictions to assure the remedy
continues to function as intended. The original LTPP was approved in 2003 and EPA approved
reductions in the frequency and sampling parameters of the groundwater and surface water
monitoring program in 2009. It also includes procedures to ensure long-term IC stewardship including
regular inspections of the engineering controls and access controls at the Site, reviews of the ICs, and
semi-annual reports with results of the inspection and review and certification to EPA that ICs remain
in-place and are effective. The regular inspections are provided for in the LTPP and constitute long-
term stewardship at the Site.
Systems Operations/Operation & Maintenance
Operation and maintenance (O&M) activities are currently performed by Brown and Caldwell, a
contractor for the PRP group per the LTPP. The O&M activities include maintenance of the landfill cap,
the GIS and any other remedy components, whenever it is needed. In addition, monitoring wells and
surface water sampling events are conducted on a semi-annual basis. Inspections of all the remedial
components at the Site are conducted on a semi-annual basis.
In 2008, the Skinner PRP work group petitioned for a reduction in monitoring based on the lack of
confirmed exceedances of the Trigger Levels (Attachment 2) and general lack of detections in Site
groundwater and surface water above the quantitation limits for monitoring events. EPA approved the
petition on November 24, 2009, which included the following reductions in the monitoring program:
• Monitoring frequency reduced from quarterly to semi-annual.
• Sampling for VOCs and semi-volatile organic compounds (SVOCs), pesticides and PCBs reduced
to annual during the spring event.
• Monitoring well sample locations reduced from 11 to 7.
• Surface water sample locations reduced from 6 to 4.
• Data package deliverable from lab reduced number of compounds from Level II to Level III (data
validation).
• A contingency to further reduce the monitoring frequency from semi-annual to annual if data
trends remain consistent.
The revised monitoring program reductions went into effect in 2010.
In 2015, the Skinner PRP work group submitted a Pilot Test Plan (PTP) for idling the GIS. EPA verbally
approved the PTP in March 2016 and formally approved the PTP on December 16, 2016 (Brown and
Caldwell, 2016). The GIS was idled on March 31, 2016.
Pilot test monitoring during the first six years was performed in accordance with the approved PTP.
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The monitoring program employed during this FYR period of the pilot test is described below. The first
three years of monitoring were discussed in the previous FYR.
Year 4 (April 2019 through March 2020):
In accordance with recommendations in the PTP's Year 3 Summary Report (Brown and Caldwell, 2020),
the fourth year of monitoring was an annual event which was completed at the same monitoring well
and surface water locations as Years 1, 2, and 3. The samples were collected during the March 2020
annual event and analyzed for total and dissolved metals. The annual monitoring event was also used
for a semi-annual Site inspection that included visual observations made from the creek bed between
surface water sampling locations SW-50 and SW-52. These inspections were performed coincident with
the landfill and creek bank stabilization inspections that also includes collecting a complete round of
water levels from Site monitoring wells, piezometers, and accessible vapor probes for use in
preparation of a groundwater potentiometric surface map. An additional semi-annual Site inspection
was conducted in October 2019.
A small area of localized seepage from near the base of the creek bank was observed near the south
end of the northern gabion wall (see Figure 2 in Attachment 1) during both the Year 2 and Year 3 semi-
annual Site inspections that were not noticed during Year 1 quarterly Site inspections. In response to
EPA's recommendation in the Fifth FYR Report (EPA, 2019), the seep was to be sampled during the
semi-annual Site inspection in October 2019. However, no visible flow was observed at the seep at the
time of the October 2019 Site inspection. Therefore, the seep was sampled during the next sampling
event (i.e., the annual monitoring event in March 2020) when the seep was flowing.
Year 5 (April 2020 through March 2021):
In accordance with recommendations in the PTP Year 4 Summary Report (Brown and Caldwell, 2021),
the fifth year of monitoring was an annual event which was completed at the same monitoring well
and surface water locations as Years 1 through 4. The samples were collected during the March 2021
annual event and analyzed for total and dissolved metals, VOCs, SVOCs, pesticides, and PCBs. The
annual monitoring event was also used for a semi-annual Site inspection that included visual
observations made from the creek bed between surface water sampling locations SW-50 and SW-52.
These inspections were performed coincident with the landfill and creek bank stabilization inspections
and included a complete round of water levels from additional Site monitoring wells, piezometers, and
accessible vapor probes for use in preparation of a groundwater potentiometric surface map. An
additional semi-annual Site inspection was conducted in October 2020.
A small area of localized seepage from near the base of the creek bank was observed near the south
end of the northern gabion wall (see Figure 2 in Attachment 1) during the Year 2, Year 3, and Year 4
semi-annual Site inspections that was not noticed during Year 1 quarterly Site inspections. The seep
was first sampled during the annual monitoring event in March 2020, when the seep was flowing, and
again during the annual monitoring event in March 2021.
Year 6 (April 2021 through March 2022):
In accordance with recommendations in the PTP Year 5 Summary Report (Brown and Caldwell, 2022),
the sixth year of monitoring consisted of an annual monitoring event which was completed at the same
monitoring well and surface water locations as Years 1 through 5. The samples were collected in March
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2022 and analyzed for total and dissolved metals. The annual monitoring event was also used for a
semi-annual Site inspection that included visual observations made from the creek bed between
surface water sampling locations SW-50 and SW-52. These inspections were performed coincident with
the landfill and creek bank stabilization inspections that also includes collecting a complete round of
water levels from all Site monitoring wells, piezometers, and accessible vapor probes for use in
preparation of a groundwater potentiometric surface map. An additional semi-annual Site inspection
was conducted in November 2021.
A small area of localized seepage from near the base of the creek bank was observed near the south
end of the northern gabion wall (see Figure 2 in Attachment 1) during the Year 2 through Year 5 semi-
annual Site inspections that was not noticed during the Year 1 quarterly Site inspections. The seep was
first sampled during the annual monitoring event in March 2020, when the seep was flowing, and again
during the annual monitoring events in March 2021 and March 2022. The location has been identified
as S-01 and has been added as regular part of O&M activities at the Site.
On March 1, 2023, the PRP notified EPA that there was trespassing and vandalism on the Site in
October/November 2022. During the inspection, the PRP contractor noticed the fence was damaged in
a couple places and two gas vents and two piezometers on the landfill cap were also damaged. The Site
fence and the two piezometers have since been repaired but the two gas vents will need to be
repaired.
III. PROGRESS SINCE THE LAST REVIEW
This section includes the protectiveness determinations and statements from the last FYR as well as
the recommendations from the last FYR and the current status of those recommendations.
Table 2:
3rotectiveness Determinations/Statements from the 2019 FYR
OU#
Protectiveness
Determination
Protectiveness Statement
1
Protective
The OU1 interim remedy at the Site is protective of
human health and the environment. There are no
current exposure pathways and the remedy appears
to be functioning as designed. The connection of
nearby residents to the public water supply
eliminates the potential exposure to the source of
contamination. In addition, site fencing remains in
place and groundwater monitoring has been
conducted at the required frequency. This interim
remedy was ultimately incorporated and finalized as
part of OU2.
2
Short-term Protective
The OU2 remedy at the Site is currently protective
of human health and the environment. There are no
current exposure pathways and the remedy appears
to be functioning as designed. The landfill cap, the
GIS and the connection of nearby residents to the
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public water supply eliminate the source of
contamination and have achieved the remedial
objectives to minimize the migration of
contaminants to groundwater and surface water
and to prevent direct contact with, or ingestion of,
contaminants in soils and sediments. ICs, in the form
of an environmental covenant, have been
implemented to protect the remedy components,
and to protect against improper use of Site land and
groundwater resources. Compliance with effective
ICs will be ensured through long-term stewardship
by implementing, maintaining, monitoring and
enforcing effective ICs as well as maintaining the
Site remedy components. However, in order for the
remedy to be protective in the long-term, the
following action needs to be taken to ensure
protectiveness: sample the seep to make sure it is
not contaminated material or related to the recent
idling of the treatment system.
Sitewide
Short-term Protective
The Sitewide remedy at the Skinner Landfill
Superfund site currently protects human health and
the environment. There are no current exposure
pathways and the remedy appears to be functioning
as designed. The landfill cap, the GIS and the
connection of nearby residents to the public water
supply eliminate the source of contamination and
have achieved the remedial objectives to minimize
the migration of contaminants to groundwater and
surface water and to prevent direct contact with, or
ingestion of, contaminants in soils, groundwater and
sediments. ICs, in the form of an environmental
covenant, have been implemented to protect the
remedy components, and to protect against
improper use of Site land and groundwater
resources. Compliance with effective ICs is being
ensured through long-term stewardship by
implementing, maintaining, monitoring and
enforcing effective ICs as well as maintaining the
Site remedy components. However, in order for the
remedy to be protective in the long-term, the
following action needs to be taken to ensure
protectiveness: sample the seep to make sure it is
not contaminated material or related to the recent
idling of the treatment system.
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Table 3: Status of Recommendations from the 2019 FYR
ou#
Issue
Recommendations
Current Status
Current
Implementation
Status
Description
Completion
Date (if
applicable)
1
There is a
seep adjacent
to the gabion
wall on the
bank of the
East Fork of
Mill Creek.
Sample the seep to
make sure it is not
contaminated
material or related
to the recent idling
of the treatment
system.
Completed
The PRP sampled
the seep in 2020
- 2022. Results
are discussed in
Data Review
section below.
March 31,
2020
OTHER FINDINGS
In addition, the following recommendation was identified during the 2019 FYR and may improve
performance of the remedy and management of O&M but does not affect current nor future
protectiveness: clear out the overgrown areas around the fence and repair the fence, if necessary.
Status update: Overgrown areas around the fence have been cleared out and the fence has been
repaired when needed. This will be a continued task during the O&M activities.
IV. FIVE-YEAR REVIEW PROCESS
Community Notification. Involvement & Site Interviews
A public notice was made available by newspaper posting in the Journal News on March 17, 2024,
stating that there was a FYR and inviting the public to submit any comments to EPA (Attachment 5).
The results of the review and the report will be made available at the Site information repositories
located at MidPointe Library West Chester, West Chester Township Halland at:
www.epa.gov/superfund/skinnerlandfill. EPA will also place a public notice in the newspaper regarding
the completion of the FYR after the report is issued. No public comments were received.
Data Review
Groundwater monitoring has been occurring at this Site since August 2003. The Semi-Annual and
Annual PTP reports, March 2019 to March 2022, were reviewed by EPA as part of this FYR. The results
are discussed below.
Site inspections were performed semi-annually by Brown and Caldwell (PRP contractor) during the
third through the sixth year (March 2019 - March 2022) of the pilot test. During the Site inspections,
no adverse conditions were observed related to idling the GIS, nor were observations inconsistent with
those made prior to initiating the pilot test. For example, no additional ponded water or overland flow
toward the creek was observed in the vicinity of the slurry wall.
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A small area of seepage from the creek bank was observed near the south end of the northern gabion
wall (see Figure 2 in Attachment 1) during the Year 2 semi-annual Site inspections that was not noticed
during Year 1 quarterly Site inspections. Because the creek bank was not routinely inspected for seeps
prior to the pilot test it is unclear if this seep may have been present sporadically prior to idling the GIS.
The observed seep area was to first be sampled during the semiannual inspection conducted in
October 2019; however, the seep was dry at the time of the event. Therefore, it was sampled
(identified as location S-01) for the first time during the annual monitoring event conducted in March
2020, and again in March 2021 and March 2022 (identified as location SWX). No Trigger Level
exceedances for the seeps were noted for the detected parameters. The analytical results are
summarized in Attachment 9. The sampling of seep S-01 has been added to O&M monitoring activities
for the Site.
In addition, during an inspection in Fall 2022, it was noticed by the PRP contractor that the fence had
been breached (taken down) on the east and west side of the site. And some of vapor probes and
piezometers were damaged. The fence was repaired in Spring 2023. However, not all the piezometers
and vapor probes have been repaired yet.
Groundwater Elevations
Groundwater levels collected during the semi-annual inspections from Site monitoring wells,
piezometers and vapor probes during the years of the pilot test are summarized in Table 2 of
Attachment 8. Data included in Table 2 consists of the six years of the PTP plus the previous two years
of data for comparison. A representative groundwater potentiometric surface map for year 6 of the
PTP, as well as the map from the March 2016 monitoring event, just prior to initiating the PTP,
included for comparison, are provided in Attachment 9, while hydrographs for the monitoring wells
and piezometers for data collected from March 2014 through March 2022 are included in Attachment
10. A review of the groundwater level and elevation data for the six years of the PTP indicates the
following:
• Groundwater elevations during the six years of the PTP generally fall within the range observed
for the two years leading up to the PTP, with no apparent increasing trend at the monitored
locations since idling the GIS to begin the PTP, confirming that groundwater is not mounding
behind the slurry wall as a result of idling the GIS.
• The groundwater flow patterns and gradient(s) across the Site during the six years of the PTP
remain generally consistent with those from the two years preceding the PTP.
Groundwater, Surface Water and Seep Analytical Results
Data summary tables of the groundwater and surface water analytical results are included in
Attachment 11. The tabulated data includes data from the first six years of the pilot test monitoring in
addition to data collected in March 2016, just prior to idling the GIS and initiating the pilot test.
Review of the data summary tables associated with the first six years of the pilot test yield the
following results:
• No Trigger Levels were exceeded or approached during the six years of the PTP monitoring for
the analyzed parameters in the groundwater, surface water or seep samples. Confirmation
sampling of the low-level Trigger Level exceedances initially reported for chromium and lead
14
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from monitoring well GW-65 during the September 2017 sampling event, as well as subsequent
routine sampling, has confirmed that these exceedances were anomalous and the Trigger
Levels for those two metals have not been approached since. In fact, chromium concentrations
appear to be stable and lead concentrations show a decreasing trend.
• The PTP data are generally consistent with those obtained during the years leading up to the
PTP (prior to idling the GIS). Table 3 in Attachment 7 indicates the minimum and maximum
reported dissolved metals results for the five years preceding the PTP (2011 through March
2016) as well as for the six years of the PTP (April 2016 through March 2022). In many instances
some higher reported concentrations are sporadic and associated with a single event. These
types of detections are in data from both the pre-PTP and during the PTP. In addition, where
sporadic higher concentrations were reported during the PTP, they often remain within historic
concentration ranges and well below the associated Trigger Levels.
• A seep area periodically flows near the base of the creek bank just downstream of the northern
gabion structure. This seep area was not flowing during the October 2019 semi-annual
inspection but was successfully sampled for the first time during the March 2020 event. During
the March 2021 and 2022 semi-annual inspections and sampling events, the seep area was
flowing at a total flow rate of approximately three gallons per minute. Analytical data from the
seep area composite sample are well below the Trigger Levels and are generally consistent with
groundwater and surface water data at the Site, indicating that the seep does not pose a threat
to adversely impact water quality in the East Fork of Mill Creek.
Statistical Trend Analysis
The Mann-Kendall statistical test was used to assess the groundwater and surface water data trends
since the GIS was idled in March 2016. The statistical test was applied to those dissolved metals with
established Trigger Levels. This evaluation included assessing the trends of 15 parameters for 11 data
points from June 2016 through March 2022 for the eight monitoring wells and two surface water/creek
locations monitored, for a total of 150 statistical tests. The data were evaluated in terms of increasing,
stable, or decreasing trends with a 95% confidence level and the results are summarized in Table 4 of
Attachment 6. The statistical analysis output is provided in Attachment 12. Based on the analysis of the
six years of monitoring data since idling the GIS, the data showed the following trends:
• Ten statistically significant decreasing trends were identified, with data well below the
associated Trigger Levels.
• Four statistically significant increasing trends were identified for just three parameters and
three monitoring wells. These trends were for monitoring wells GW-7R (antimony and nickel),
GW-59 (nickel), and GW-61 (barium). In each case the reported concentrations are well below
the associated Trigger Levels, ranging from 7X to more than 30X lower than the corresponding
Trigger Level. Additional rounds of data are needed to further evaluate these trends and
whether they are significant and sustained over time.
• 75 stable trends where concentration trends were neither statistically increasing nor decreasing
but the data were well below the associated Trigger Levels. For these data sets the slope of the
trend line was zero.
15
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• 24 data sets where the data were non-detect and therefore concentrations are considered
stable.
• 37 data sets were identified where no trend was apparent, but the data were well below the
associated Trigger Levels. For these data sets, the slope of the trend line was not zero;
however, no statistically significant trend was identified.
The Site inspections and monitoring results confirm that the remedy has been and continues to be
effective at protecting human health and the environment with no exceedances of applicable Trigger
Levels.
Site Inspection
The inspection at the Site as part of this FYR was conducted on October 4, 2023. In attendance were
Scott Hansen, EPA; Leslie Williams, Ohio EPA; two staff members from Brown and Caldwell and three
members of the Skinner PRP work group. In addition, local law enforcement (West Chester Police)
attended so that we had an escort while onsite. The purpose of the inspection was to assess the
protectiveness of the remedy, including the presence of fencing to restrict access, the integrity of the
landfill cap, and general conditions of the Site.
A drive was taken around the landfill. Site access is available through a locked gate which encloses the
Site landfill. The Site Inspection Checklist was completed by EPA and is included as Attachment 4.
The landfill cap over the Site appeared to be in good condition and well vegetated. However, some
areas around the fence were overgrown with smaller trees and bushes. Two gas vents and two
piezometers were damaged. The landfill cap needs to be mowed.
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents? Yes
Question A Summary:
Remedial Action Performance: The remedies selected in the 1992 ROD for the first OU interim
action and the 1993 final ROD have been implemented and remain functional, operational and
effective. As long as the Site hazardous waste cap continues to be maintained and monitored,
and the security perimeter fence is maintained, the source area remedies will ensure that the
Site remains protective. As mentioned above, in 2015, the Skinner PRP workgroup submitted a
PTP for idling the GIS. EPA verbally approved the PTP in March 2016 and formally approved the
PTP on December 16, 2016 (Brown and Caldwell, 2016). The GIS was idled on March 31, 2016.
Idling the GIS system has not impacted the protectiveness of the remedy.
System Operations/O&M: O&M is performed by the PRP in accordance with the LTPP. No
early indicators of potential remedy failure were noted during the review. Maintenance
activities have been fairly consistent although the Site inspection identified some areas around
the fence were overgrown with smaller trees and bushes, some vapor probes and piezometers
16
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were damaged, and the landfill cap needs to be mowed. As mentioned above, on March 1,
2023, the PRP notified EPA that there was trespassing and vandalism on the Site in
October/November 2022. During the inspection, the PRP contractor noticed the fence was
damaged in a couple places and gas vents and piezometers on the landfill cap were also
damaged. The Site fence and two piezometers have since been repaired but the two gas vents
will need to be repaired. An updated O&M plan was submitted to the Agencies for review in
May 2023. EPA and Ohio EPA will review and comment on the updated plan in 2024.
Implementation of Institutional Controls and Other Measures: Access controls (e.g., fencing
and warning signs) are in place and effective. The 1993 ROD remedy included the
implementation of proprietary controls and other ICs to prevent future development of the
Site, assure the integrity of the RA, and prohibit the use of Site groundwater as a drinking water
source. These controls were required to protect the integrity of the landfill cap, the GIS, and all
other components of the RA. On February 14, 2006, an environmental covenant, (Attachment
3) under the Ohio version of the UECA, was recorded in the land records for the Site. The
environmental covenant implements the ROD requirements. Compliance with the ICs will be
ensured through long-term stewardship by implementing, maintaining, monitoring, and
enforcing effective ICs as well as maintaining the Site remedy components per the procedures
in the LTPP.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels, and remedial action
objectives (RAOs) used at the time of the remedy selection still valid? Yes
Question B Summary:
Changes in Standards and To Be Considered: All standards outlined in the September 1992
and June 4, 1993, RODs and the 2012 ESD are still valid at the Site.
Changes in Exposure Pathways: No changes in the Site conditions that affect exposure
pathways were identified as part of the FYR. However, based on the types of wastes disposed at
the Site, there is potential for emerging contaminants perfluoroalkyl and polyfluoroalkyl
substances (PFAS) and 1,4-dioxane to be present; therefore, an issue and recommendation are
included in this FYR. If emerging contaminants are present, a complete human exposure
pathway via groundwater is not expected because as part of remedy implementation nearby
residences located southwest of the Site were connected to a public water supply in order to
prevent these residents from potential exposure to contaminated groundwater. In addition,
effective ICs are in place to prevent use of the groundwater.
Changes in Risk Assessment Methodologies: No changes in risk assessment methodologies
were identified.
QUESTION C : Has any other information come to light that could call into question the protectiveness
of the remedy? No
No other information has come to light that calls into question the protectiveness of the
remedy. In addition, there are currently no impacts from climate change or natural disasters.
17
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18
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VI. ISSUES/RECOMMENDATIONS
Issues/Recommendations
OU(s) without Issues/Recommendations Identified in the Five-Year Review:
OU1
Issues and Recommendations Identified in the Five-Year Review:
OU(s): OU2
Issue Category: Monitoring
Issue: Determine if 1,4-Dioxane and PFAS are impacting the Site.
Recommendation: Conduct groundwater sampling for 1,4-dioxane and
PFAS at the Site to check if they are present.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
EPA/State
12/31/2024
OU(s): OU2
Issue Category: Operations and Maintenance
Issue: Smaller trees and bushes have overgrown around the fence. Landfill
cap needs to be mowed.
Recommendation: Clear out the overgrown areas around the fence, and
repair the fence, and mow the cap.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
EPA/State
9/30/2024
OU(s): OU2
Issue Category: Operations and Maintenance
Issue: Gas vents are damaged on the landfill cap.
Recommendation: Repair all damaged gas vents.
19
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Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
PRP
EPA/State
12/31/2024
OTHER FINDINGS
In addition, the following are recommendations that were identified during the FYR and may improve
performance of the remedy, reduce costs, improve management of O&M, accelerate site close out,
conserve energy, promote sustainability, but do not affect current nor future protectiveness:
• An updated O&M plan was submitted to the Agencies for review in May 2023, which included
proposed monitoring and inspection changes (frequency) and GIS equipment removal. EPA and
Ohio EPA will review and comment on the updated plan in 2024.
VII. PROTECTIVENESS STATEMENT
Protectiveness Statement(s)
Operable Unit: 1 Protectiveness Determination:
Protective
Protectiveness Statement: The OU1 interim remedy at the Site is protective of human health
and the environment. There are no current exposure pathways, and the remedy appears to be
functioning as designed. The connection of nearby residents to the public water supply
eliminates the potential exposure to the source of contamination. In addition, site fencing
remains in place and groundwater monitoring has been conducted at the required frequency.
This interim remedy was ultimately incorporated and finalized as part of OU2.
Protectiveness Statement(s)
Operable Unit: 2 Protectiveness Determination:
Short-term Protective
Protectiveness Statement: The OU2 remedy at the Site is currently protective of human health
and the environment. There are no current exposure pathways, and the remedy appears to be
functioning as designed. The landfill cap, the GIS and the connection of nearby residents to
the public water supply eliminate the source of contamination and have achieved the remedial
objectives to minimize the migration of contaminants to groundwater and surface water and
to prevent direct contact with, or ingestion of, contaminants in soils and sediments. ICs, in the
form of an environmental covenant, have been implemented to protect the remedy
20
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components, and to protect against improper use of Site land and groundwater resources.
Compliance with effective ICs will be ensured through long-term stewardship by
implementing, maintaining, monitoring, and enforcing effective ICs as well as maintaining the
Site remedy components. However, in order for the remedy to be protective in the long-term
the following actions need to be taken to ensure protectiveness: conduct sampling of 1,4-
Dioxane and PFAS to determine if they are present at the Site, maintain the cap area and repair
damage to perimeter fencing, and repair damaged gas vents to ensure all monitoring locations
are functioning appropriately.
Sitewide Protectiveness Statement
Protectiveness Determination:
Short-term Protective
Protectiveness Statement: The Sitewide remedy at the Skinner Landfill Superfund site currently
protects human health and the environment. There are no current exposure pathways, and
the remedy appears to be functioning as designed. The landfill cap, the GIS and the connection
of nearby residents to the public water supply eliminate the source of contamination and have
achieved the remedial objectives to minimize the migration of contaminants to groundwater
and surface water and to prevent direct contact with, or ingestion of, contaminants in soils,
groundwater and sediments. ICs, in the form of an environmental covenant, have been
implemented to protect the remedy components, and to protect against improper use of Site
land and groundwater resources. Compliance with effective ICs is being ensured through long-
term stewardship by implementing, maintaining, monitoring, and enforcing effective ICs as
well as maintaining the Site remedy components. However, in order for the remedy to be
protective in the long-term the following actions need to be taken to ensure protectiveness:
conduct sampling of 1,4-Dioxane and PFAS to determine if they are present at the Site,
maintain the cap area and repair damage to perimeter fencing, and repair damaged gas vents
to ensure all monitoring locations are functioning appropriately.
VIII. NEXT REVIEW
The next FYR report for the Skinner Landfill Superfund Site is required five years from the completion
date of this review.
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APPENDIX A - REFERENCE LIST
• Fifth Five-Year Review Report, EPA, March 2019
• Explanation of Significant Differences, EPA, September 2012
• RA Consent Decree, EPA, April 2001
• Record of Decision, EPA, September 1992
• Record of Decision, EPA, June 1993
• Summary reports from the PTP, Brown and Caldwell, 2019 - 2022
• Remedial Design, Rust, 1996
• Baseline Risk Assessment and Feasibility Study (FS), Rust, 1992.
• Phase II Rl, Rust, May 1991
• Pilot Test Plan, Brown and Caldwell, 2016
• Long-Term Performance Plan (Systems Operations/Operation & Maintenance), Earth Tech,
2003
• Preliminary Close Out Report, EPA, 2001
22
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Attachment 1
Skinner Site Maps
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N
I
Source: Google Earth
NOT TO SCALE
1
Brown and
Caldwell i
i
Figure 1
Site Vicinity Map
Skinner Landfill
Butler County, Ohio
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GAS VENT
GAS PROBE
GROUND WATER MONITORING WELL
PIEZOMETER
-f- OUTFALL SURFACE WATER RUN OFF SAMPLE LOCATION
CREEK SURFACE WATER SAMPLE LOCATION
OBSERVATION WELL
GROUNDWATER INTERCEPTION TRENCH AND SUMP
SLURRY WALL
EAST FORK OF MILL CREEK
ORIGINAL SAMPLE LOCATION ELIMINATED FROM MONITORING PROGRAM IN 2009
CURRENT MONITORING PROGRAM SAMPLE LOCATION
FENCELINE
23
GW-650
GW-65g
¦ x
SKINNER LANDFILL
SITE MAP AND MONITORING PROGRAM
FIGURE
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Attachment 2
Trigger Levels
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Skinner Landfill
Operation & Maintenance-Long Tern Performance Plan
TABLE 9
REVISED MODIFIED TRIGGER LEVELS
Compound
Units
Modified
Trigger Limit
Volatile Organic Compounds
1,1,1-Trichloroethaiie
ug/l
88
1, S ,2,2-1 etracMoraethane
ug/l
107
1,1,2- I'ricliioroethane
ug/1
418
1,2-DicMoroethane
ug/i
5
1,2-DicHoroetbane(total)**
ug/l
70
1,2-DicMoropropan.e
Bg/1
5
2-Butanone
ug/1
71
Benzene
Ug/l
5
Carbon Tetrachloride
ug/1
5
Chlorobenzeiie
ug/l
26
CMoroform
ug/l
79
Ethylbeiizeiie
ug/l
62
Styrene
ug/l
56
Tetrachloroethene
ug/l
5
Toluene
Ug/l
1000
Trichloroethene
ug/l
5
Vinyl Chloride
ug/l
2
Xylene (total)
ug/l
10000
Semi-V olatile Organics
1,2,4-TricMorobenzene
ug/l
77
1,2-DicMorobenzene
ug/l
11
1,3 -Diehlorobenzene
Ug/l
600
1,4-Dichlorobenzene
ug/l
75
2,2'-oxybis-(l -Chloropropane)#
Ug/l
4360
2.4-DimethvlDhenol
asfl
2120
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Skinner Landfill
Operation & Maintenance-Long Term Performance Plan
TABLE 9 .
REVISED MODIFIED TRIGGER LEVELS
Compound
Units
Modified
Trigger Limit
4-Nitroph.enol
ug/1
150
Acenaphthene
ug/1
520
Benzo(a)antliraceiie
ug/1
10
Benzo(a)pyrene
Ug/1
10
Benzo(b)fluoranthene ¦
• ug/1
10
Benzo(g,h,i)perylene
ug/1
10
B enzo(k)fluor3fltiiene
ug/1
10
bis(2-CHoroethyl)Etiier
¦Ug/1
• 13.6
bis(2-Ethylliexyl)pMhalate
ug/1
49
Butylbenzylphthalate
Ug/1
10
Chiysene
Ug/1
10
Di-n-butylphtfaalate
ug/1
190
D i b enzo{ a ,h)an thrac cnc
ug/1
,10
Dimethylphthalate
ug/1
73
Fluoranthene
Ug/1
. • 10
Hexachloroefhaiie
Ug/1
10
Indeno(l,2,3-cd)pyrene
Ug/1'
10
Isophorone
ug/1 - •
900
Naphthalene
ug/1
44
Nitrobenzene
Ug/1
27000
Phenantiirene
Ug/1
10
Phenol
Ug/1
370
Inurgaiilcs
Antimony
ug/1
60
Arsenic
ug/1
10
Barium
ug/1
1000
Beryllium
ug/1
5
Cadmium
ug/1
5
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Skinner Landfill
Operation & Maintenance-Long Term Performance Plan
TABLE 9
REVISED MODIFIED TRIGGER LEVELS
Compound
Units
Modified
Trigger Limit
Chromium'
ug/1
11
Copper
ug/1
25
Iron
ug/1
5000
Lead-
ug/1
4,2
Mercury
ug/1
0.2
Nickel
ug/l
96
Selenium
ug/1
5
Silver
ug/1
10
Thallium
ug/l
40
Zinc
ug/1
86
Cyanide
ug/1
10
Only parameters with existing Table 1 trigger levels were evaluated.
# Previously known by the name bis(2-Chloroisopropyl)efiier.
** Existing trigger for cis isomer is 70 ug/1, trans isomer is 100 ug/1.
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Attachment 3
Copy of Environmental Covenant
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ENVIRONMENTAL COVENANT
This Environmental Covenant is made as of the 3* and naphthalene; and
Whereas, EPA issued a Record of Decision (ROD) for the Operable Unit Interim
Action on September 30,1992, which provided for Site fencing, and connections to the Butler
Comity public water system for potentially affected local users of groundwater, ami growidwater
monitoring, and whereas EPA issued a final ROD on June 4,1993 which called for the
construction of a RCRA cap over the waste materials; interception, collection, and treatment of
contaminated groandwater; diversion of upgradient groundwater flow, if necessary; ntonitoriag;
sots vapor extraction; and institutional controls to limit tie fetors use of the property where
remedial construction has occurred and to protect the performance of the remedy, and to prevent
the exposure ofhumans or the environment to contaminants; and
KWUfl? MOT HECISSref'
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Wliereas .on December 9, 1992, a EPA issued a Unilateral Administrative Order to,
various potentially responsible parties, and on April 2,2001, a Remedial Action Consent Decree
was entered which provided for the implementation of the .remedial action selected in the June 4,
. 1993 ROD, and whereas with the exception of the diversion of the upgradient groundwater
(which has -not yet been determined to be necessary) and the- institutional controls, the remedial
action has been implemented at the Site; and
Whereas, the parties hereto have agreed: 1) to grant a permanent right of access
over the Site to the Access Grantees (as hereafter defined) for purposes of implementing,
' facilitating and monitoring the remedial action, and 2) to impose on the Site activity and use
limitations as covenants that will run . with the land for the purpose of protecting human health
and the environment; and * -
Now therefore, Owners and EPA agree to the following;
1. Environmental Covenant. This instrument is an environmental covenant
executed and delivered pursuant to §§ 5301,80 to 5301.92 of the Ohio Revised Code.
2. Site: Restricted Area. The three (3) parcels of real property which
together contain 78.29 acres located in Union Township, Butler County, Ohio (the "Site") which
are subject" to the environmental covenants set forth herein are described on Exhibit A attached
hereto and hereby by reference incorporated herein. Part of the Site which is subject to certain
activity and use limitations in Paragraph 5 below is described on Exhibit B attached hereto and
hereby, incorporated herein, and is hereafter referred to as the "Restricted Area." The Site is
outlined by heavy black line on the copy of the Butler County, Ohio Auditor's tax map (the
"Map") attached hereto as Exhibit C- l and the Restricted Area is shown by diagonal lines on the
copy of the Map attached hereto as Exhibit C-2.
3. Owner. Elsa Skinner-Morgan ("Owner") who resides at 8750 Cincinnati
Dayton Road, West Chester, Ohio 45069 is the owner of the Site. David Morgan, ("Morgan") of
the same address, who is the husband of Owner, joins in this Environmental Covenant in order to
subject his dower/courtesy interest and any other interest in the Site which he may now or
hereafter hold to the terms of this instrument. Owner and David Morgan are the - Settling
Owner/Operator Defendants named in the Consent Decree (described in Paragraph 10 below).
4. Holders. Elsa Skinner-Morgan and David Morgan, whose address appears
in Paragraph 3 above.
5. Activity and Use Limitations on the Restricted Area and on the Site.
(a) Owner agrees for herself and her successors in title not to permit the Site
to be used in any manner that would interfere with or adversely affect the integrity
or protectiveness of the remedial action which has been implemented or which
will be implemented pursuant to the Consent Decree unless the written consent of
' the EPA to such use is first obtained. Owner's agreement to restrict the use of the
Site shall include, but not be limited to, not pemiitting any drilling, digging,
bl\v\skiinior\Eiivironrnental Coven an t.03f..doc
2
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building, or the installation, construction, removal or use of any buildings, wells,
pipes, roads, ditches, or any other structures on the Restricted Area unless the
written consent of EPA to such use or activity is first obtained. Further, Owner
agrees for herself and her successors in title to refrain from bringing, and to refuse
to grant permission to any other person to bring, Waste Material or Scrap Metal
. onto the Site, except in accordance with any federal, state or local permit or the
Consent Decree.
(b) Owner covenants ¦ for herself and her successors and assigns, that the
Restricted Area, shall be used solely for Commercial/Industrial Activities only in
accordance with an EPA-approved plan for re-use of the Restricted Area as
required under Paragraph 5(a) and the Restricted Area, shall not be used for
Residential and Other Prohibited Activities. Owner acknowledges and agrees that
the Restricted Area has been remediated only for commercial/industrial uses. The
terra "Commercial/Industrial Activities" includes: (i) wholesale and retail sales
and service activities including, but not limited to retail stores, and automotive
fuel, sales and service facilities; (ii) governmental, administrative and general
office activities, (iii) manufacturing, processing, and warehousing activities,
including, but not limited to, production, storage and sales of durable goods and
other non-food chain products; and (iv) activities which are consistent with or
similar to the above listed activities; together with related parking areas and
driveways, but excludes Residential and Other Prohibited Activities. The term
"Residential and Other Prohibited Activities" includes: (i) single and multi-
family dwellings and transient residential units; (ii) day care centers
and preschools; (iii) public and private elementary and secondary schools;
(iv) hospitals, assisted living facilities and other extended care medical facilities
and medical and dental offices; (v) food preparation and food service facilities,
including food stores, restaurants, banquet facilities and other food preparation or
sales facilities; and (vi) indoor or outdoor entertainment and recreational facilities.
(c) Owner covenants for herself and her successors and assigns that there
shall be no consumptive use of Site groundwater, either on or off the Site.
6. "Running with the Land. This Environmental Covenant shall be binding
upon the Owner and all assigns and successors in interest, including any Transferee, and shall
run with the land, pursuant to ORG § 5301.85, subject to amendment or termination as set forth
herein. The term "Transferee," as used in this Environmental Covenant, shall mean any future
owner of any interest in the Site or any portion thereof, including, but not limited to, owners of
an interest in fee simple, mortgagees, easement holders, and/or lessees.
7. Requirements for Notice to EPA Following Transfer of a Specified
Interest in, or Concerning Proposed Changes in the Use of. Applications for Building Permits
for, or Proposals for any Site Work Affecting Contamination on, the Restricted Area. Neither
Owner nor any Holder shall transfer any interest in the Restricted Area or make proposed
changes in the use of the Restricted Area, or make applications for building permits for, or
proposals for any work in the Restricted Area without first providing notice to EPA and
blwxskiiinefvEnvironmeiita! Covenant.03f..doc
3
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obtaining any approvals or consents thereto which are required under Sections VII, VIII, X or
XIII of the Consent Decree. .
8. Access to the Site. Pursuant to Section X of the Consent Decree, Owner
agrees that EPA and the Settling Generator/Transporter Defendants, their successors and assigns,
and their'respective officers,' employees, agents, contractors and .other invitees (collectively,
"Access Grantees") shall have and hereby grants to each of them an unrestricted right of access
to the Site-to undertake the Permitted Uses described in Paragraph 9 below and, in connection
therewith, to use all roads, drives and paths, paved or unpaved, located on the Site or off the Site
("off-site") and rightfully used by Owner and Owner's invitees for ingress to or egress from
portions of the Site (collectively, "Access Roads"). The Site and the Access Roads are shown on
the Survey. The off-site Access Roads referred to in the preceding sentence are located on the
parcels described on Exhibits D and E attached hereto. The right of access granted under this
Paragraph 8 shall be irrevocable while this. Covenant remains-in full force and effect. The
Settling Generator/Transporter Defendants are named on Exhibit F attached hereto.
. 9.- Permitted Uses. The right of access granted under Paragraph 8 of this
Environmental Covenant shall provide Access Grantees with access at all reasonable times to the
Site, or such other property, for the purpose of conducting any activity related to the Consent
Decree or the purchase of the Site, including, but not limited to, the following activities:
a) Monitoring the Work;
b) Verifying any data or information submitted to the United States or the
State;
c) Conducting investigations relating to contamination at or near the Site;
d) Obtaining samples;
e) Assessing the need for, planning, or. implementing response actions at or
near the Site;
f) Implementing the Work pursuant to the Consent Decree;
g) Inspecting and copying records, operating logs, contracts, or other
documents maintained or generated by Owner or her agents, consistent
with Section XXXI (Access to Information) of the Consent Decree;
h) Assessing Settling Generator/Transporter Defendants3 compliance with
the Consent Decree;
i) Determining whether the Site or other property is being used in a manner
that is prohibited or restricted or that may need to be prohibited or
restricted by or pursuant to the Consent Decree; and
bhvVskinner\EnvirGnmental Covenai3t03f.-d.oc
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j) Surveying and making soil tests of the Site, locating utility lines, and
assessing the obligations which may be required of a Prospective
Purchaser (as defined in the Consent Decree) by EPA under the Consent
Decree.
10. Administrative Record.
(a) Owner is the Defendant in an action filed by EPA under federal programs
governing environmental remediation of the Site under the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980,
42 U.S.C. § 9601 et seq. in the United States District Court for the
Southern District of Ohio, .Western Division, Civil Action No., C-1-00-
424 and- has executed and delivered a Consent Decree dated April 2,
2001, (the "Consent Decree") settling such lawsuit. A certified copy of
the Consent Decree has been recorded in the Office of the Butler County
Recorder at OR Book 6658, Pages 413-613. The Consent Decree
constitutes an environmental response project as defined by ORC
§ 5301.80(E) and authorizes and requires certain remedial action to be
taken by the Settling Generator/Transporter Defendants. On June 4, 1993,
EPA issued a Record of Decision (ROD) which set forth EPA's
determination of. the appropriate remedial action to be implemented at the
Site to address Site contamination. Pursuant to this ROD, EPA approved a
Remedial Design and Remedial Action work plan which has been
implemented as described in the fourth "Whereas" clause at the beginning
of this instrument. EPA's ROD was based upon an administrative record.
Copies of the EPA administrative record for the Skinner Landfill Site are
maintained at the following locations: EPA Region 5; Superfund Records
Center (7th Floor); 77 W. Jackson; Chicago, Illinois 60604; Union
Township Library, 7900 Cox Road, West Chester, Ohio 45069; and
Union Township Hall, 9113 Cincinnati-Dayton Road, West Chester, Ohio
45069.
(b) Under Section X, Paragraphs 27 and 28 of the Consent Decree, Owner has
agreed to provide the institutional controls with respect to the Site that are
set forth in this Environmental Covenant. Owner has executed and
delivered this Environmental Covenant to satisfy and implement her
agreements to provide such institutional controls under the Consent
Decree and as herein provided. All capitalized terms in this
Environmental Covenant which are not defined herein shall have the same
meaning as set forth in the Consent Decree or in Sections 5301.80 to
5301.90 Ohio Revised Code.
11. Notice upon Conveyance. Each instrument hereafter conveying any interest in the
Site or Restricted Area or any portion of the Site or Restricted Area shall contain a notice of the
activity and use limitations,- and grants of access set forth in the Environmental Covenant, and
provide the recorded location of this Environmental Covenant. For instruments conveying any
interest in the Site or any portion thereof other than the Restricted Area, the notice shall be
b1w\skinner\Environmental Coven an t.03f..doc
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substantially in the form set- forth in Exhibit G. For instruments conveying any interest any
interest in the Restricted Area or any portion thereof, the notice shall be substantially in the fonn
set forth in Exhibit H.
12. Amendments: Earlv Termination. This Environmental Covenant may be
modified or amended or terminated while Owner owns the property only by a writing signed by
Owner and, EPA with the formalities required for the execution of a deed in Ohio which is
recorded in the Office of. the Recorder of Butler County, Ohio. Upon, transfer of all or any
portion of the Site, Owner waives any rights that she might otherwise have under Section
5301.90 of the Ohio Revised Code to withhold her consent to any amendments, modifications, or
termination of this Environmental Covenant, to the extent that she has transferred her interest hi
that portion of the Site affected by said modification, amendment or termination. The rights of
Owner's successors, in interest as to a modification, amendment or termination of this
Environmental Covenant are governed by the provisions of Section 5301.90 of the Ohio Revised
Code. ,
' 13. . Other Matters.
(a) ' Representations and Warranties of Owner and Morgan. Owner and
Morgan represent and warrant; that Owner is the sole owner of the Site;
that Owner holds fee simple title to the Site which is free, clear and
unencumbered .except for the Consent Decree; that Owner and Morgan
have the power and authority to make and enter into this Agreement as
Owner and Holder, to grant the rights and privileges herein provided and
to cany out all obligations of Owner, Morgan and Holder hereunder; that
this Agreement has been executed and delivered pursuant to the Consent
Decree; and, that this Agreement will not materially violate or contravene -
or constitute a material- default under any other agreement, document or
instrument to which Owner or Morgan is a party or by which Owner or
Morgan may be bound or affected.
(b) Right to Enforce- Agreement Against Owner and Morgan: Equitable
Remedies. In the event that Owner, Morgan or any other person should
attempt to deny the rights of access granted under Paragraph 8 or should
violate the restrictions on use of the Site set forth in Paragraph 5, then, in
addition to any rights which EPA may have under , the Consent Decree,
EPA or any Settling Generator/Transporter Defendant that is adversely
affected by each denial (for example, any Settling Generator/Transporter
Defendant that' is prevented from conducting its remedial obligations
under the Consent Decree) or by such violation shall have the right to
immediately seek an appropriate equitable remedy and any court having
jurisdiction is- hereby granted the right to issue a temporary restraining
order and/or preliminary injunction prohibiting such'denial of access or
use in violation of restrictions upon application . by EPA or by such
adversely affected Settling Generator/Transporter Defendant without
notice or posting bond. Owner and each subsequent owner of the Site by
accepting a deed thereto or to any part thereof waives all due process or
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other constitutional right to notice and hearing before the grant of a
temporary restraining order and/or preliminary injunction pursuant to this
Subsection 13(b). .
(c) Future Cooperation; Execution of' Supplemental Instruments. Owner
agrees to cooperate folly with EPA and/or the Settling
Generator/Transporter Defendants and to assist them in implementing the
rights granted them under this Environmental Covenant and, in
furtherance thereof, agrees to execute and deliver such further documents
as may be requested by EPA to supplement or confirm the rights granted
hereunder.
(d) Cumulative Remedies: Mo Waiver. All of the rights and remedies set
forth in this Environmental Covenant or otherwise available at law or in
equity are cumulative and may be exercised without regard to the
adequacy of, or exclusion of, any other right, remedy or option available
hereunder or under the Consent Decree or at law.- The failure to exercise
any right granted hereunder, to take action to remedy any violation by
Owner or Morgan of the terms hereof or to exercise any remedy provided
herein shall not be deemed to be a waiver of any such right or remedy and
no. forbearance on the part of EPA and no extension of the time for
performance of any obligations of Owner or Morgan hereunder shall
operate to release or in any manner affect EPA's rights hereunder.
(e) Severability. If any provision of this Environmental Covenant is found to
be unenforceable in any respect, the validity, legality, and enforceability
of the remaining provisions shall not in any way be affected or impaired. ¦
(f) Recordation. Within thirty (30) days after the date of the final required
signature upon this Environmental Covenant, Owner shall file this
Environmental Covenant for recording, in the same maimer as a deed to
the. Site, with the Butler County Recorder's Office.
(g) Effective Date. The effective date of this Environmental Covenant shall
be the date upon which the folly executed Environmental Covenant has
been recorded as a deed record for the Site with the Butler County
Recorder.
(h) Distribution of Environmental Covenant/Other Notices. The Owner shall
distribute a file-stamped and date-stamped copy of the reorded
Environmental Covenant to: Ohio EPA, Butler County, each person
¦ holding a recorded interest in the Site, and the Settling
Generator/Transporter Defendants. All notices, requests, demands or
other communications required or permitted under this Environmental
Covenant shall be given in the manner and with the effect set forth in the
Consent Decree.
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(f) Notices — All notices,. requests, demands or other communications
required or permitted under this Environmental Covenant shall be given in
. the manner and with the effect set forth in the Consent Decree.
'(g) Governing Law. This Environmental Covenant shall be construed
according to and governed by the laws of the State of Ohio and the United
States of America.
(h) Captions. All paragraph captions are for convenience of reference only
and shall not affect , the construction of any provision of this
; Environmental Covenant.
¦ (i) Time of the Essence. Time is of the essence ' of each and every
performance obligation of Owner and Morgan under this Environmental
Covenant.
[SIGNATURE PAGE TO FOLLOW]
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IN WITNESS WHEREOF, Owner, Morgan and EPA have executed and.
delivered this Environmental Covenant as of the date first above written.
OWNER
ElsaM. Skinner-Morgan, a/k/a
ElsaM, Skinner
David Morgan
&
STATE OF OHIO
COUNTY OF
) SS.
The foregoing instrument was acknowledged before me this
and husband.
of
^\2005, by Elsa M. Skinner-Morgan, a/k/a Elsa M. Skinner and David Morgan, wife
m&zy
Notary Public
UNITED STATES OF AMERICA
On behalf of the Administrator of the
United States Environmental Protection Agency
By:
Richard C. Karl, Director,
Superfund Division, Region 5
STATE OF ILLINOIS
COUNTY OF COOK
)SS.
)
The foregoing instrument was acknowledged before me this day of
; 200|'f by Richard. C. Karl, Director, Superfimd Division, Region 5 of the United
States Environmental Protection Agency, on beh alf .of the United States of America.
Official Ssal
Joespfi H Krufti
Motaty Pub!® State of Iflinow
My Coronnsatan Exfwaa 07/24/08
Notary Public
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EXHIBIT'A
Legal Description of the "Site" • ¦
PARCEL I ¦
Situated in and being in Section 22, Town 3, Range 2 and in Union Township, Butler County,
Ohio, and is bounded and described as follows:
' Beginning at the Northwest comer of the Southeast Quarter of said Section 22, Town 3, Range 2;
thence along the north" line of the southeast quarter section, South 86° 09' East, 300.40 feet to an
old stone; thence North 4° 18' 45" East, 726.56 feet to an iron pipe; thence South 85° 57' 45"
East, 406.26 feet to the old right of way for the C.C.C. & St. L. Railroad; thence along said old
right of way line South 15° 10' 45" East, 163.00 feet to a point in the present right of way line for
the C.C.C. & St.Railroad; thence along said present Railroad right of way line, South 11° 49'
West, 1865.17 feet to an iron pipe; thence South 89° 03' West, 512.03 feet; (witnessed by an iron
pipe. North 89° 03' East, 2,00 feet); thence North 3° 59' East,' 1318.92 feet to an iron pipe and
the point of beginning; containing 24.852 acres of land, more or less.
M5610-023-000-015
PARCEL H
Situate in Section 22, Town 3, Range 2, Union Township, Butler County, Ohio and being part of
the property conveyed.to Elsa M. Skinner by deed recorded in Deed Book 1236, Page 337, in the
Butler County Recorder's Office, and being more particularly described as' follows:
Commencing at the intersection of the west line of Section 22 and the half section line; thence
along said half section line, South 87° 01' 55" East, 982.76 feet to the center line of Cincinnati-
Dayton Road; thence leaving said half section line and along said centerline, South 39° 59' 08"
West, 861.28 feet to the western most corner of said Skinner lands; thence along said centerline,
North 39° 59' 08" East, 198.15 feet to the point of beginning of this tract; thence along said
centerline, North 39° 59' 08" East, 263.98 feet; thence leaving said centerline and with said
Skinner lines, South 50° 00' 52" East, 363.10 feet; thence North 39° 59' 08" East, 171.00 feet;
thence North 29° 42' 05" East, 279.68 feet; thence South 50° 02' 05" East, 175.77 feet; thence
North 23° 00' 00" East, 328.48 feet; thence South 86° 06' 05" East, 66.89 feet; thence South 85°
38' 15" East, 292.00 feet; thence by new division line, South 40° 49' 19" West, 848.97 feet;
thence South 35° 31' 36" West, 225.23 feet; thence South 36° 05' 41" West, 269.24 feet; thence
South 43° 12' 11" West, 99.54 feet; thence North 46° 47' 50" West, 339.63 feet; thence North
39° 59' 08" East, 188.51 feet; thence North 50° 00' 52" West,'363.10 feet to the said centerline
and the point of beginning of this parcel.
Containing 11.507 acres of land, more or less.
A plat of survey prepared by Joseph M. Allen Co. is recorded- in Volume 22,- Page 175 of the
Butler County Engineer's Records of Land Surveys. ...
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PARCEL IE
Situate in Section 22, Town 3, Range 2, Union Township, Butler County, Ohio and being part of
the property conveyed to Elsa M. Skinner by deed recorded in Deed Book 1236, Page 337 in the
Butler County Recorder's Office, and being more particularly described as follows:
Commencing at the intersection of the west line of Section 22 and the half section line; thence
along said half section line, South 87° 01' 55" East, 982.76 feet to the centerline of Cincinnati-
Dayton Road; thence leaving said half section line and along said centerline, South 39° 59' 08"
West, 861.28 feet to the westernmost corner of said Skinner lands, being the point of beginning
of this tract; thence along said centerline, North 39° 59' 08" East, 198.15 feet; thence by new
division line, South 50° 00' 52" East, 363.10 feet; thence South 39° 59' 08" West, 188.51 feet;
thence South 46° 47' 50" East, 339.63 feet; thence North 43" 12' 11" East, 99.54 feet; thence
North 36° 05' 41" East, 269.24 feet; thence North 35° 31' 36" East, 225.23 feet; thence North 40°
49' 19" East, 848.97 feet to said Skinner line; thence with said Skinner line, South 85° 38' 15"
East, 802.73 feet;- thence South 4° 16' 10" West, 1319.05 feet; thence South 89° 08' 10" West,
649.50 feet to the east line of Ray A. Skinner as conveyed by deed recorded in Deed Book 1475,
Page 656 in the Butler County Recorder's Office; thence with said Ray Skinner line, North 7°
08' 10" East, 58.61 feet; thence North 75° 27' 20" West, 225.36 feet; thence South 6° 48' 51"
West, 118.98 feet to said Elsa Skinner line; thence with said line, South 82° 52' 15" West,
530.95 feet; thence North 5° 52' 15" West, 108.95 feet; thence North 46° 47' 50" West, 1007.50
feet to the centerline of Cincinnati-Dayton Road and the point of beginning; excepting therefrom
the 0.401 acres of land of Charles S. and Rosella M. Wallen as conveyed by deed recorded in
Deed Book 721, Page 251 of the Butler County Recorder's Office.
Containing 41.938 acres of land, more or less.
A plat of survey prepared by Joseph M. Allen Co. is recorded in Volume 22, Page 175 of the
Butler County Engineer's Records of Land Surveys.
M5610-023-000-055
Property Address: 8750 Cincinnati Dayton Road, West Chester, OH
Tax ID No.: M5610-023-000-015; -025; -055
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EXHIBIT B
Legal Description of the "Restricted Area"
. PARCEL I
Situated in and being in Section 22, Town 3, Range 2 and in Union Township, Butler County,
Ohio, and is bounded and described as follows: .
Beginning at the Northwest corner of the Southeast Quarter of said Section 22, Town 3, Range 2;
thence along the north line of the southeast quarter section, South 86° 09* East, 300.40 feet to an
old stone; thence North 4° 18" 45" East, 726.56 feet to an iron pipe; thence South 85° 57' 45"
East, 406.26 feet to the old right of way for the C.C.C. & St. L. Railroad; thence along said old
'right of way line South 15° 10' 45" East, 163.00 feet to a point in the present right of way line for
the C.C.C. & St. L. Railroad; thence along said present Railroad right of way line, South 11° 49'
West, 1865.17 feet to an iron pipe; thence South 89° 03' West, 512.03 feet; (witnessed by an iron
pipe, North 89° 03' East, 2.00 feet); thence North 3° 59' East, 1318.92 feet to an iron pipe and -
the point of beginning;' containing 24.852 acres of land, more or less.
Excepting from the above described 24.852 acre parcel that part thereof which adjoins the
centerline of Cincinnati-Dayton Road to a depth of 702.34 feet measured southeasterly from and
at a right angle to the centerline of Cincinnati-Dayton Road.
PARCEL III
Situate in Section 22, Town 3, Range 2, Union Township, Butler County, Ohio and being part of
the property conveyed to Elsa M. Skinner by deed recorded in Deed Book 1236, Page 337 in the
Butler County Recorder's Office, and being more particularly described as follows:
Commencing at the intersection .of the west line of Section 22 and the half section line; thence
along said half section line, South 87° OP 55" East, 982.76 feet to the centerline of Cincinnati-
Dayton Road; thence leaving said.half section line and along said centerline, South 39° 59' 08"
West, 861.28 feet to the westernmost corner of said Skinner lands, being the point of beginning
of this tract; thence along said centerline, North 39° 59' 08" East,- 198.15 feet; thence by new
division line, South 50° 00' 52" East, 363.10 feet; thence South 39° 59' 08" West, 188.51 feet;
thence South 46° 47'. 50" East, 339.63 feet; thence North 43° 12' 11" East, 99.54 feet; thence
North 36° 05' 41" East, 269.24 feet; thence North 35° 31' 36" East, 225.23 feet; thence North 40°
49' 19" East, 848.97 feet to said Skinner line; thence with said Skinner line, South 85° 38' 15"
East, 802.73 feet; thence South 4° 16' 10" West, 1319.05 feet; thence South 89° 08' 10" West,
649.50 feet to the east line of Ray A. Skinner as conveyed by deed recorded in Deed Book 1475,
Page 656 in the Butler County Recorder's Office; thence with said Ray Skinner line, North 7°
08' 10" East, 58.61 feet; thence North 75° 27' 20" West, 225.36 feet; thence South 6° 48' 51"
West, 118.98 feet to said Elsa Skinner line; thence with said line, South 82° 52' 15" West,
530.95 feet; thence North 5° 52' 15" West, 108.95 feet; thence North 46° 47' 50" West, 1007.50
feet to the centerline of Cincinnati-Dayton Road and the point of beginning; excepting therefrom
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the 0.401 acres of land of Charles S. and Rosella M. Wallen as conveyed by deed recorded in
. Deed Book 721, Page 251 of the Butler County Recorder's Office.
Containing 41.938 acres of land, more or less. -
A plat of survey prepared by Joseph M. Allen Co. is recorded in Volume 22, Page 175 of the
Butler County Engineer's Records of Land Surveys.
M5610-023-000-055
Property Address: ¦ 8750 Cincinnati Dayton Road, West Chester, OH
Tax ID No.: M5610-023-000-015; -025; -055
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EXHIBIT C-2
Drawing of Restriction Area
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EXHIBIT D
Legal Description of 1.38-Acre Access Easement Parcel
Being part of lot number four (4) and part of Lot Number Eleven (11)- in Section 22,
' Town 3, Range 2, in Union Township, Butler County, Ohio, and as recorded in Land Book #1,
page 62, of the Butler County Ohio Recorder's Records, and more particularly described as
follows: . .
Lying and being in Section 22, Town 3, Range 2, in Union Township, Butler County,
Ohio, and beginning at the northeast corner of said lot #4, thence north 83-1/2 degrees east a
distance of four hundred and thirteen and five-tenths (413.5) feet to a point, thence south 70
degrees west a distance of four hundred and twenty-two (422) feet to a point, thence south 86-1/2
degrees west a distance of two hundred and thirty nine and six-tenths (239.6) feet to a point,
thence south 88 degrees west a distance of two hundred and sixty feet to a point; thence.north lA
degree west a distance of sixty (60) feet to a point, thence north 87 degrees east a distance of four
hundred and ninety and five-tenths (490.5) feet to the place of beginning, containing one and
thirty-eight hundredths (1.38) acres of land; being the same premises conveyed by Anna Mae
Skinner to William J. Skinner by deed dated February 14, 1938, recorded in Volume 327 page
137, Butler County, Ohio Deed Records.
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exhibit: e
Legal Description of .449-Acre Access .Easement 'Parcel
Situated and lying in Section 22, Town 3, Range 2, Union Township, Butler County,. Ohio.
'Commencing at the southwest comer of Section 22, Town 3, Range 2 in Union Township, thence
north 1 degree 45' east 1042.8 feet; thence north 78 degrees 00' east 1798.5 feet to a stone at the
southwest corner of tract herein transferred; thence north 83. degrees 30' east 225 feet to an iron
pin; thence.north 1 degree 30' east 58,61 feet to an iron pipe; thence north 81 degrees 05-1/2'
west 225.36 feet to a stone; thence south 2 degrees 25' west to the place of beginning, containing
.449 of an acre. .
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EXHIBIT F
SETTLING GENERATOR/TRANSPORTER DEFENDANTS
Anchor Hocking Cafporauosi
Chemical LeaiMn
The Dow Chemical Company
Ford . Motor Company
Formica Cftrpc ration
Henkel Corporation
GE Aircraft Engines ¦
General Motors Corporation
King Wrecking Company, Inc.
King Container Services^ Inc.
Moflsanio Company
Oxy USA "Inc.
Velstcol Chemical Cor&oi'ation
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' ' ' . • ¦ EXHIBIT G .
Notice iipon Conveyance of Site or any Portion thereof other than the Restricted
Area
THE INTEREST CONVEYED HEREBY IS SUBJECT TO A CONSENT DECREE DATED
APRIL 2, 2001. WHICH WAS RECORDED IN THE OFFICE OF THE BUTLER COUNTY
RECORDER, OR BOOK 6658, Pages 413-613, AND WHICH RESTRICTS THE INTEREST
CONVEYED AS -SET FORTH IN THIS NOTICE AND AN' 'ENVIRONMENTAL
COVENANT,- DATED , 200_, RECORDED IN THE DEED OR- OFFICIAL
RECORDS OF THE BUTLER COUNTY RECORDER ON. , 200_; in
BOOK Page , THE ENVIRONMENTAL COVENANT CONTAINS THE
FOLLOWING ACTIVITY AND USE LIMITATIONS' AND ACCESS RIGHTS:
Activity and Use Limitations on the Site.
(a) - The Site shall not be used in any manner that would interfere with or adversely affect the
integrity or protectiveness of the remedial action which has been.implemented or which will be
implemented pursuant to the Consent Decree unless the written consent of the EPA to such use is
first obtained. No person shall bring any Waste Material or Scrap Metal onto the Site, except in
accordance with any federal, state or local permit or the- Consent Decree.
(b) There shall be no consumptive use of Site groundwater, either on or off the Site.
Access to the Site". Pursuant to Section X of the Consent Decree and the Environmental
Covenant, EPA and the Settling Generator/Transporter Defendants, their successors and assigns,
and their respective officers, employees, agents, contractors and other" invitees (collectively,
"Access Grantees") shall have an unrestricted right of access to the Site to undertake the
Permitted- Uses described below and, in connection therewith, to use all roads, drives and paths,
paved or unpaved, located on the Site or off the Site ("off-site") and the "Access Roads." The
Site and- the Access Roads are shown on the Survey, which is recorded in Volume 22, Page 175
of the Butler County Engineer's Records of Land Surveys. The off-site Access Roads referred to
in the preceding sentence are located on the parcels "described on Exhibits D and E of the
Environmental Covenant referred to above, from which this Notice proceeds. The right of access
set forth above shall be irrevocable while the Environmental Covenant remains in full force and
effect. The Settling Generator/Transporter Defendants are named on Exhibit F of the
Environmental Covenant.
Permitted Uses. The right of access granted under the Environmental Covenant shall provide
Access Grantees with access at all reasonable times to the Site, or such other property, for the
purpose of conducting any activity related to the Consent Decree-or-the purchase of the Site,
including, but not limited to, the following activities:
a) Monitoring the Work;
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b) Verifying any data or information submitted to the United States or the
State;
c) Conducting investigations relating to contamination at or near the Site;
d) . Obtaining samples; ¦ ¦
e) . Assessing the need for, planning, or implementing response actions at or
near the Site;
f) Implementing -the Work pursuant to the Consent Decree;
g) Inspecting and copying records, operating logs, contracts, or other
documents maintained or generated by Owner or her agents, consistent
with Section. XXXI (Access to Information) of the Consent Decree;
h) Assessing Settling Generator/Transporter Defendants' compliance with
the Consent Decree;
i) Determining whether the Site or other property is being used in a manner
that is prohibited. or restricted or that may need to be prohibited or
restricted by or pursuant to the Consent Decree; and
j) Surveying and making soil tests of the Site, locating utility lines, and
assessing. the obligations which may be required of a Prospective
Purchaser (as defined in the Consent Decree) by EPA under the Consent
Decree.
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. • EXHIBIT H
Notice upon Conveyance of Restricted Area or any Portion thereof-
THE INTEREST CONVEYED HEREBY IS SUBJECT TO A CONSENT DECREE DATED
APRIL 2, 2001, WHICH WAS RECORDED IN THE' OFFICE OF THE BUTLER COUNTY
RECORDER, OR.BOOK 6658, Pages 413-613, AND WHICH RESTRICTS THE INTEREST
CONVEYED AS SET FORTH IN THIS NOTICE, AND. AN ENVIRONMENTAL
COVENANT, DATED 200^ RECORDED JN THE OFFICIAL RECORDS OF
THE BUTLER COUNTY RECORDER ON' . 200_Jri. BOOK' .
Page . THE ENVIRONMENTAL COVENANT CONTAINS- THE FOLLOWING
ACTIVITY AND USE LIMITATIONS AND ACCESS RIGHTS: ¦
Activity and. Use Limitations on the Restricted Area,
(a) The Restricted Area shall not be used in any maimer that would interfere
with or adversely affect the integrity or protectiveness of the remedial action
' which has been implemented or which will be implemented pursuant to the
Consent Decree unless the written consent of the EPA to such use is first
obtained. There shall be no drilling, digging, building, or the installation,
construction, removal or use of any buildings, wells, pipes, roads, ditches, or any
other structures on the Restricted Area unless the written consent of EPA to such
use or activity is first obtained. No person shall bring any Waste Material or
Scrap Metal onto the Restricted Area, except in accordance with any federal,, state
or local permit or the Consent Decree.
(b) The Restricted Area, shall be used solely for Commercial/Industrial
Activities only in accordance with an EPA-approved plan for re-use of the
Restricted Area as required under Paragraph 5(a) of the Environmental Covenant
and the Restricted Area shall not be used for Residential and Other Prohibited
Activities... The Restricted Area has been remediated only for
commercial/industrial uses. The term "Commercial/Industrial Activities"
' includes: (i) wholesale and retail sales and service activities including, but not
limited to. retail stores, and automotive fuel, sales and service facilities; (ii)
governmental, administrative and general office activities, (iii) manufacturing,
processing, and warehousing activities, including, but not limited to, production,
storage and sales of durable goods and other non-food chain products; and (iv)
activities which arc consistent with or similar to the above listed activities;
together with related parking areas and driveways, but excludes Residential and
Other Prohibited Activities. The term "Residential and Other Prohibited
Activities" includes: (i) single and multi-family. dwellings and transient
residential units; (ii) day care centers and preschools; (iii) public and private
elementary and secondary schools; (iv) hospitals, assisted living'facilities and
other extended care medical facilities and medical and dental offices;- (v) food
preparation and food service facilities, including food stores, restaurants, banquet
biw\skinncrtEnvironmcnta1 Covenant-03t.doc
21
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facilities and other food preparation or sales facilities; and (vi) indoor or outdoor
entertainment and recreational facilities.
(c) There shall be no consumptive use of Restricted. Area groundwater, either
on or off the Restricted Area.
Requirements for "Notice to EPA Following Transfer of a Specified Interest in, or Concerning
Proposed Changes in the Use of Applications for Building Permits for, or Proposals for any. Site
Work Affecting Contamination on, the Restricted Area. No transferee in interest may make
changes in the use of the Restricted Area, or may make applications for building permits for, or
proposals for any work, in the Restricted Area without "first providing notice to EPA and
obtaining any approvals or consents thereto which are required under Sections VII, VIII, X or
¦"XIII of the Consent Decree.
Access to the Restricted Area. Pursuant to Section X of the Consent Decree- and the
Environmental Covenant, EPA and the Settling Generator/Transporter Defendants, their
successors and assigns, and their respective officers, employees, agents, contractors and other
invitees (collectively, "Access Grantees") shall have an unrestricted right of access to the
Restricted Area to undertake the Permitted Uses described below and, in connection therewith, to
use all roads, drives and paths, paved or unpaved, located on the Restricted Area or off the
Restricted ("off-site") and the Access Roads. The Site and the Access Roads are shown on the
Survey which is recorded in Volume 22, Page 175 of the Butler County Engineer's Records of
Land Surveys. The right of access granted under this Paragraph shall be irrevocable while this
Environmental Covenant remains in Ml force and effect. The Settling Generator/Transporter
Defendants are named on Exhibit F of the Environmental Covenant.
Permitted Uses. The right of access granted under the Environmental Covenant shall provide
Access Grantees with access at all reasonable times to the Restricted Area, or such other
property, for the purpose of conducting any activity related to the Consent Decree or the
purchase of the Restricted Area, including, but not limited to, the following activities:
a) Monitoring the Work;
b) Verifying any data or information submitted, to the United States or the
State;
c) Conducting investigations relating to contamination at or near the
Restricted Area;
d) Obtaining samples;
e) Assessing the need for, planning, or implementing response actions at or
near the Restricted Area;
f) Implementing the Work pursuant to the Consent Decree;
blw^kinnerXEnvirontTierita] Covenant.03f..doc
22
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g) "Inspecting and. copying records, operating logs, contracts, or other
documents maintained or generated by Owner or her agents, consistent
with Section XXXI (Access , to Information) of the Consent Decree;
h) ¦ Assessing Settling Generator/Transporter Defendants' compliance with
the Consent Decree;
i) Determining whether the Restricted Area or other property is being used
in a manner that is prohibited or restricted or that may need to be
prohibited or restricted by or pursuant to the Consent Decree; and
j) Surveying and making' soil tests of the Restricted Area, locating utility
lines, and assessing the obligations which may be required of a
. Prospective Purchaser (as defined in the Consent Decree) by EPA under
¦ the Consent Decree.
blw\skinneAEnviTomnental Co\>enant.03f,.doc
23
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Attachment 4
Site Inspection Checklist
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Site Inspection Checklist
1. SI I I. INFORMATION
Site name:
Skinner Landfill
Date of inspection:
10/4/2023
Location and Region:
West Chester, Ohio, Region 5
EPA ID:
OHD063963714
Agency, office, or company leading the FYR:
EPA
Weather/temperature:
Sunny/75 degrees
Remedy Includes: (Check all that apply)
IEI Landfill cover/containment
~ Monitored natural attenuation
El Access controls
~ Groundwater containment
IEI Institutional controls
IEI Vertical barrier walls
El Groundwater pump and treatment
~ Surface water collection and treatment
El Other: Slurry wall
Attachments:
~ Inspection team roster attached
~ Site map attached
1
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Site Inspection Checklist
II. INTERVIEWS (Check all that apply)
1 O&M Site Manager Kerri Lilly, Project Mgr., 10/4/2023
Interviewed: IEI at site ~ at office ~ by phone Phone Number: 614-410-3079
Problems, suggestions: ~ Report attached
Click or tap here to enter text.
Joe
2 O&M Staff Warburton, Field Technician, 10/4/2023
Interviewed: IEI at site ~ at office ~ by phone Phone Number: Click here to enter text.
Problems, suggestions: ~ Report attached
Click or tap here to enter text.
3. Local regulatory authorities and response agencies (i.e., State and Tribal offices, emergency
response office, police department, office of public health or environmental health, zoning office,
recorder of deeds, or other city and county offices, etc.) Fill in all that apply.
Agency: Ohio EPA
Contact: Leslie Williams, State Project Manager, 11/14/2018, P: 937-285-6054
Problems, suggestions: ~ Report attached
Click or tap here to enter text.
Agency: Police Department
Contact: Name , Title , or tap to enter a date., P: Phone Number
Problems, suggestions: ~ Report attached
Police Department accompanied the group during the inspection based on past incidents with the
current owners of the Skinner property.
Agency: Click or tap here to enter text.
Contact: Name , Title , or tap to enter a date., P: Phone Number
Problems, suggestions: ~ Report attached
Click or tap here to enter text.
Agency: Click or tap here to enter text.
Contact: Name , Title , or tap to enter a date., P: Phone Number
Problems, suggestions:
Click or tap here to enter text.
4. Other Interviews (optional): ~ Report attached
Numerous people from the Skinner PRP group attended the site inspection.
2
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Site Inspection Checklist
iii. ovsiti: doci mi:vi s & uix ouns vkuii
IKI) (Check all thai appl\)
1.
O&M Documents
El O&M manual El Readily available
El Up to date
~ N/A
El As-built drawings ~ Readily available
El Up to date
~ N/A
IEI Maintenance logs El Readily available
El Up to date
~ N/A
Remarks: Click or tap here to enter text.
2.
Site-Specific Health and Safety Plan
IEI Contingency Plan/Emergency Response Plan
Remarks: Click or tap here to enter text.
El Readily available
El Readily available
3.
O&M and OSHA Training Records
~ Readily available
~ Up to date
El N/A
Remarks: Click or tap here to enter text.
4.
Permits and Service Agreements
~ Air discharge permit ~ Readily available
~ Up to date
~ N/A
El Effluent discharge El Readily available
~ Up to date
~ N/A
~ Waste disposal, POTW ~ Readily available
~ Up to date
~ N/A
~ Other permits: Click or tap here to enter text.
Remarks: Discharge is not being utilized at this time due to the idling of the GIS system (pilot test)
5.
Gas Generation Records
El Readily available
El Up to date
~ N/A
Remarks: Click or tap here to enter text.
6.
Settlement Monument Records
~ Readily available
~ Up to date
El N/A
Remarks: Click or tap here to enter text.
7.
Groundwater Monitoring Records
El Readily available
El Up to date
~ N/A
Remarks: Click or tap here to enter text.
8.
Leachate Extraction Records
~ Readily available
~ Up to date
El N/A
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Site Inspection Checklist
Remarks: Click or tap here to enter text.
9. Discharge Compliance Records
~ Air ~ Readily available ~ Up to date ~ N/A
K Water (effluent) IEI Readily available ~ Up to date ^ N/A
Remarks: Click or tap here to enter text.
10. Daily Access/Security Logs
~ Readily available El Up to date ~ N/A
Remarks: Click or tap here to enter text.
IV. O&M COSTS
1. O&M Organization
~ State in-house ~ Contractor for State
~ PRP in-house IEI Contractor for PRP
~ Federal Facility in-house ~ Contractor for Federal Facility
Remarks: Brown and Caldwell
2. O&M Cost Records
~Readily available ~ Up to date ~ Funding mechanism/agreement in place
Original O&M cost estimate Click or tap here to enter text. ~ Breakdown attached
Total annual cost by year for review period if available
From
To
Total cost
Click or tap to enter a
Click or tap to
Click or tap here to
~ Breakdown attached
date.
enter a date.
enter text.
From
To
Total cost
Click or tap to enter a
Click or tap to
Click or tap here to
~ Breakdown attached
date.
enter a date.
enter text.
From
To
Total cost
Click or tap to enter a
Click or tap to
Click or tap here to
~ Breakdown attached
date.
enter a date.
enter text.
From
To
Total cost
Click or tap to enter a
Click or tap to
Click or tap here to
~ Breakdown attached
date.
enter a date.
enter text.
From
To
Total cost
Click or tap to enter a
Click or tap to
Click or tap here to
~ Breakdown attached
date.
enter a date.
enter text.
3. Unanticipated or Unusually High O&M Costs During Review Period
Describe costs and reasons:
4
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Site Inspection Checklist
Click or tap here to enter text.
V. A( ( i:ss AM) INSTI I I TIOWI. ( ON
1 UOI.S
IEI Applicable
~ N/A
1.
Fencing Damaged ~ Location shown on site map
IEI Gates secured
~ N/A
Remarks: Fence and Gates in good condtion. However, many small trees and bushes are overgrown by the
fence. Some areas of the fence were replaced due to a vandalism/trespassing incident in fall 2022.
2.
Other Access Restrictions ~ Location shown on site map
Remarks: Signs on fence in place.
~ Gates secured
3.
Institutional Controls (ICs)
A. Implementation and Enforcement
Site conditions imply ICs not properly implemented
~ Yes IEI No
~ N/A
Site conditions imply ICs not being fully enforced
~ Yes IEI No
~ N/A
Type of monitoring {e.g., self-reporting, drive by)
Groundwater
Frequency
annual
Responsible party/agency
PRP
Contact: Kerri Lilly, Project Manager, Click or tap to enter a date.,
P: 614-410-3079
Reporting is up-to-date
El Yes ~ No
~ N/A
Reports are verified by the lead agency
El Yes ~ No
~ N/A
Specific requirements in deed or decision documents have been
met
El Yes ~ No
~ N/A
Violations have been reported
~ Yes El No
~ N/A
Other problems or suggestions:
Click or tap here to enter text.
B. Adequacy ^ ICs are adequate ~ ICs are inadequate ~ N/A
Remarks: Click or tap here to enter text.
4.
General
A. Vandalism/Trespassing ~ Location shown on site map
~ No vandalism evident
Remarks: Vandalism/trespassing incident reported in fall 2022.
B. Land use changes on site IEI N/A
Remarks: Click or tap here to enter text.
C. Land use changes off site ~ N/A
5
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Site Inspection Checklist
Remarks: Current property owners deposit/store numerous wastes (construction debris, metal
scrap,etc.) offsite (adjacent to the landfill property). In addition, RVs/mobile homes are located offsite
but near the landfill property.
vi. cenkuai. sin: conditions
1. Roads El Applicable
~ N/A
A.
Roads damaged ~ Location shown on site map
Remarks: Click or tap here to enter text.
El Roads adequate ~ N/A
B.
Other Site Conditions
Remarks: Click or tap ' to enter text.
Ml. LAN DM I.I, COVKUS
1. Landfill Surface IEI Applicable
~ N/A
A.
Settlement (Low Spots) ~ Location Shown on Site Map
El Settlement Not Evident
Areal Extent: Click or tap here to enter text. Depth: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
B.
Cracks ~ Location Shown on Site Map
El Cracking Not Evident
Lengths: Click or tap here .... 1t1 , ,
Widths: Click or tap here to enter text.
to enter text.
Depths: Click or tap here to enter
text.
Remarks: Click or tap here to enter text.
C.
Erosion ~ Location Shown on Site Map
El Erosion Not Evident
Areal Extent: Click or tap here to enter text. Depth: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
D.
Holes ~ Location Shown on Site Map
El Holes Not Evident
Areal Extent: Click or tap here to enter text. Depth: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
E. Vegetative Cover IEI Grass
El Cover Properly Established
El Tress/Shrubs (indicate size and locations on a diagram
El No Signs of Stress
Remarks: Grass needed to be mowed. In additon, small trees starting to grow near the landfill cap.
F.
Alternative Cover (armored rock, concrete, etc.)
Remarks: Click or tap here to enter text.
El N/A
G.
Bulges ~ Location Shown on Site Map
El Bulges Not Evident
Areal Extent: Click or tap here to enter text. Height: Click or tap here to enter text.
6
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Site Inspection Checklist
Remarks: Click or tap here to enter text.
H. Wet Areas/Water Damage ~ Wet Areas/Water Damage Not Evident
El Wet Areas
~ Location Shown on Site Map
Areal Extent: Area south of landfill cap
was wet due to a lot of rain
~ Ponding
~ Location Shown on Site Map
Areal Extent: Click or tap here to enter
text.
El Seeps
~ Location Shown on Site Map
Areal Extent: Seep located near gabion
wall
~ Soft Subgrade
~ Location Shown on Site Map
Areal Extent: Click or tap here to enter
text.
Remarks: Click or ta
tp here to enter text.
I. Slope Instability
~ Location Shown on Site Map
El Slope Instability Not Evident
~ Slides
Areal Extent: Click or tap here to enter
text.
Remarks: Click or ta
tp here to enter text.
2. Benches
IEI Applicable
~ N/A
(Horizontally constructed mounds of earth placed across a steep landfill side slope to interrupt the slope in
order to slow down the velocity of surface runoff and intercept and convey the runoff to a lined channel.)
A. Flows Bypass Bench ~ Location Shown on Site Map
El N/A or Okay
Remarks: Click or ta
tp here to enter text.
B. Bench Breached
~ Location Shown on Site Map
El N/A or Okay
Remarks: Click or ta
tp here to enter text.
C. Bench Overtopped
~ Location Shown on Site Map
El N/A or Okay
Remarks: Click or ta
tp here to enter text.
3. Letdown Channels
IEI Applicable
~ N/A
(Channel lined with erosion control mats, riprap, grout bags, or gabions that descend down the steep side
slope of the cover and will allow the runoff water collected by the benches to move off of the landfill cover
without creating erosion gullies.)
A. Settlement
~ Location Shown on Site Map
El Settlement Not Evident
Areal Extent: Click
;»r tap here to enter text.
Depth: Click or tap here to enter text.
Remarks: Click or ta
tp here to enter text.
B. Material Degradation ~ Location Shown on Site Map El Degradation Not Evident
Material Type: Click
or tap here to enter text.
Areal Extent: Click or tap here to enter
text.
7
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Site Inspection Checklist
Remarks: Click or tap here to enter text.
C. Erosion
~ Location Shown on Site Map
El Erosion Not Evident
Areal Extent: Click or tap h
ere to enter text. Depth: CI
ick or tap here to enter text.
Remarks: Click or tap here
:o enter text.
D. Undercutting
~ Location Shown on Site Map
El Undercutting Not Evident
Areal Extent: Click or tap h
ere to enter text. Depth: CI
ick or tap here to enter text.
Remarks: Click or tap here
:o enter text.
E. Obstructions
~ Location Shown on Site Map
El Undercutting Not Evident
Type: Click or tap here to e
titer text.
Areal Extent: Click or tap h
ere to enter text. Size: CIic
k or tap here to enter text.
Remarks: Click or tap here
:o enter text.
F. Excessive Vegetative Growth ~ Location Shown on Site Map [>
3 Excessive Growth Not Evident
Areal Extent: Click or tap h
, , ~ Vegetation in channels does not obstruct
ere to enter text. _ ®
flow
Remarks: Click or tap here
:o enter text.
4. Cover Penetrations
El Applicable
~ N/A
A. Gas Vents
~ Active
El Passive
~ Properly secured/locked
~ Functioning
~ Routinely sampled
El Good condition
~ Evidence of leakage at penetration
El Needs Maintenance
~ N/A
Remarks: Some gas vents were damaged during the vandalism/trespassing incident in 2022.
B. Gas Monitoring Probes
~ Properly secured/locked
~ Functioning
~ Routinely sampled
~ Good condition
~ Evidence of leakage at penetration
~ Needs Maintenance
El N/A
Remarks: Click or tap here
:o enter text.
C. Monitoring Wells
IEI Properly secured/locked
El Functioning
El Routinely sampled
IEI Good condition
~ Evidence of leakage at penetration
El Needs Maintenance
~ N/A
8
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Site Inspection Checklist
Remarks: Some piezometers/monitoring wells were damaged during the vandalism/trespassing incident
in 2022.
D. Leachate Extraction Wells
~ Properly secured/locked
~ Functioning
~ Routinely sampled
~ Good condition
~ Evidence of leakage at penetration
~ Needs Maintenance
El N/A
Remarks: Click or tap here to
enter text.
E. Settlement Monuments
~ Located ~ Routinely Surveyed El N/A
Remarks: Click or tap here to
enter text.
5.
Gas Collection and Treatment
~ Applicable
El N/A
A. Gas Treatment Facilities
~ Flaring
~ Thermal Destruction
~ Collection for Reuse
~ Good condition
~ Needs Maintenance
Remarks: Click or tap here to
enter text.
B. Gas Collection Wells, Manifolds, and Piping
~ Good condition
~ Needs Maintenance
~ N/A
Remarks: Click or tap here to
enter text.
C. Gas Monitoring Facilities (e.g. gas monitoring of adjacent homes or buildings)
~ Good condition
~ Needs Maintenance
~ N/A
Remarks: Click or tap here to
enter text.
6.
Cover Drainage Layer
IEI Applicable
~ N/A
A. Outlet Pipes Inspected
IEI Functioning
~ N/A
Remarks: Click or tap here to
enter text.
B. Outlet Rock Inspected
El Functioning
~ N/A
Remarks: Click or tap here to
enter text.
7.
Detention/Sediment Ponds
~ Applicable
El N/A
A. Siltation
~ Siltation Not Evident
El N/A
Areal Extent: Click or tap her
e to enter text. Depth: CIic
< or tap here to enter text.
Remarks: Click or tap here to
enter text.
B. Erosion
El Erosion Not Evident
9
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Site Inspection Checklist
C. Outlet Works
~ Functioning
El N/A
Remarks: Click or tap here to enter text.
D. Dam
~ Functioning
El N/A
Remarks: Click or tap here to enter text.
8. Retaining Walls
El Applicable
~ N/A
Areal Extent: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
Depth: Click or tap here to enter text.
A. Deformations ~ Location Shown on Site Map
Horizontal Displacement: Click or tap here to enter text.
Vertical Displacement: Click or tap here to enter text.
Rotational Displacement: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
El Deformation Not Evident
B. Degradation ~ Location Shown on Site Map El Deformation Not Evident
Remarks: Click or tap here to enter text.
9. Perimeter Ditches/Off-Site Discharge
IEI Applicable
~ N/A
A. Siltation ~ Location Shown on Site Map El Siltation Not Evident
Areal Extent: Click or tap here to enter text. Depth: : or tap here to enter text.
Remarks: Click or tap here to enter text.
B. Vegetative Growth ~ Location Shown on Site Map ~ N/A
El Vegetation Does Not Impede Flow
Areal Extent: Click or tap here to enter text. Type: Click or tap here to enter text.
Remarks: Click or tap here to enter text.
C. Erosion ~ Location Shown on Site Map El Erosion Not Evident
Areal Extent: Click or tap here to enter text. Depth: . or tap here to enter text.
Remarks: Click or tap here to enter text.
D. Discharge Structure ~ Functioning El N/A
Remarks: Discharge is not being utilized at this time due to the idling of the GIS system (pilot test)
Mil. VERTICAL BARRIER WALLS
El Applicable
~ N/A
1. Settlement
~ Location Shown on Site Map
10
El Settlement Not Evident
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Site Inspection Checklist
Areal Extent: Click or tap here to enter text
Remarks: Click or tap here to enter text.
Depth: Click or tap here to enter text
2. Performance Monitoring
Type of Monitoring: Inspections
~ Performance Not Monitored
Frequency: Semi-annual
Remarks ' '
~ Evidence of Breaching
Head Differential: Click or tap here to enter text
ix. (;uoiM)\\ \n u/si ui \( i: watku kk.mkdiks
Applicable
~ N/A
1. Groundwater Extraction Wells, Pumps, and Pipelines
Applicable
~ N/A
A. Pumps, Wellhead Plumbing, and Electrical IEI N/A
~ Good Condition ~ All Required Wells Properly Operating ~ Needs Maintenance
Remarks: At this time the pumps are not being used due to the pilot test (idling the GIS system)
B. Extraction System Pipelines, Valves, Valve Boxes, and Other Appurtenances
IEI Good Condition ~ Needs Maintenance
Remarks: Click or tap here to enter text.
C. Spare Parts and Equipment
IEI Readily Available El Good Condition
Remarks: Click or tap here to enter text.
~ Needs to be Provided
~ Requires Upgrade
2. Surface Water Collection Structures, Pumps, and Pipelines
~ Applicable
N/A
A. Collection Structures, Pumps, and Electrical
~ Good Condition ~ Needs Maintenance
Remarks: At this time the pumps are not being used due to the pilot test (idling the GIS system)
B. Surface Water Collection System Pipelines, Valves, Valve Boxes, and Other Appurtenances
~ Good Condition ~ Needs Maintenance
Remarks: Click or tap here to enter text.
C. Spare Parts and Equipment
~ Readily Available ~ Good Condition
Remarks: Click or tap here to enter text.
~ Needs to be Provided
~ Requires Upgrade
3. Treatment System
~ Applicable
N/A
A. Treatment Train (Check components that apply)
11
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Site Inspection Checklist
~ Metals removal ~ Oil/Water Separation
~ Bioremediation
~ Air Stripping ~ Carbon Absorbers
~ Filters Click or tap here to enter text.
~ Additive (e.g. chelation agent, flocculent) Click or tap here to ent
er text.
~ Others or tap here to enter text.
~ Good Condition
~ Needs Maintenance
~ Sampling ports properly marked and functional
~ Sampling/maintenance log displayed and up to date
~ Equipment properly identified
~ Quantity of groundwater treated annually Click or tap here to ent
er text.
~ Quantity of surface water treated annually Click or tap here to en
ter text.
Remarks: At this time the GIS system is not being used due to the pilot test (idling the GIS system)
B. Electrical Enclosures and Panels (properly rated and functional)
~ N/A El Good Condition
~ Needs Maintenance
Remarks: Click or tap here to enter text.
C.
Tanks, Vaults, Storage Vessels ~ N/A
~ Proper Secondary Containment IEI Good Condition
~ Needs Maintenance
Remarks: Click or tap here to enter text.
D. Discharge Structure and Appurtenances
~ N/A IEI Good Condition
~ Needs Maintenance
Remarks: Click or tap here to enter text.
E.
Treatment Building(s)
El N/A ~ Good condition (esp. roof and doorways)
~ Needs repair ~ Chemicals and equipment properly stored
Remarks Click or tap here to enter text.
F.
Monitoring Wells (Pump and Treatment Remedy)
El Properly secured/locked El Functioning
~ N/A
El Routinely sampled ~ All required wells located
El Good condition ~ Needs Maintenance
12
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Site Inspection Checklist
Remarks Some piezometers/monitoring wells were damaged during the vandalism/trespassing incident
in 2022.
4. Monitoring Data
A. Monitoring Data:
El Is Routinely Submitted on Time
IEI Is of Acceptable Quality
B. Monitoring Data Suggests:
El Groundwater plume is effectively contained
IEI Contaminant concentrations are declining
5. Monitored Natural Attenuation
A. Monitoring Wells (natural attenuation remedy)
~ Properly secured/locked ~ Functioning
~ All required wells located ~ Needs Maintenance
Remarks: ; or tap here to enter '
X. Oil IKU KIM IM)I I S
If there are remedies applied at the site which are not covered above, attach an inspection sheet
describing the physical nature and condition of any facility associated with the remedy. An example
would be soil vapor extraction.
XI. OVKKAM, OBSERVATIONS
1. Implementation of the Remedy
Describe issues and observations relating to whether the remedy is effective and functioning as designed.
Begin with a brief statement of what the remedy is to accomplish (i.e., to contain contaminant plume,
minimize infiltration and gas emission, etc.).
The remedy is functioning as intended. However, we are currently conducting a pilot test (idling the GIS
system to see if conditions change at the Site if groundwater is not collected and treated).
2. Adequacy of O&M
Describe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protectiveness of the remedy.
Click or tap here to enter text.
3. Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs that suggest that the protectiveness of the remedy may be compromised
in the future.
Click or tap here to enter text.
4. Early Indicators of Potential Remedy Problems
Describe possible opportunities for optimization in monitoring tasks or the operation of the remedy.
13
IEI N/A
~ Routinely sampled
~ Good condition
-------
Site Inspection Checklist
Click or tap here to enter text.
14
-------
Attachment 5
Newspaper Ad
-------
SUNDAY, MARCH 17,2024 | JOURNAL-NEWS | TRUSTED SINCE 1898
A5
FROM PAGE ONE
Ohio
continued from A1
Ohio voters responded
last year to the 2022 ruling
by overwhelmingly approv-
ing an amendment enshrin-
ing abortion rights in the
state constitution. They did
so after swarming polls to
defeat a Republican effort
that would have made doing
so more difficult. The state
also legalized recreational
marijuana.
There's a risk of overinter-
preting the results from 2023,
but the victories have encour-
aged Democrats defending
a pivotal U.S. Senate seat
this year.
Last August's GOP-backed
effort to make amending
Ohio's constitution harder
showed Ohioans that "Repub-
lican politicians were not on
their side," said Ohio Demo-
cratic Party Chair Elizabeth
Walters.
"The Democratic Party
isn't getting ahead of them-
selves after just one election,
but it does provide some
hope that steadily, and with
a lot of work, Ohioans could
drift more to the left than to
the right in upcoming elec-
tions," she said.
Democrats' most imme-
diate concern is re-electing
three-term U.S. Sen. Sher-
rod Brown. He's unopposed
in the March 19 primary as
Republicans hash out who
will run against him, but
Brown is viewed as among
the nation's most vulnera-
ble Democrats in Novem-
ber's general election, when
voters also will cast ballots
for president and Congress.
Delaware County voter
Janelle Tucker, 53, said as
she perused the floral section
of a Kroger recently that she
can't predict how Ohio will
vote this fall. She's a Demo-
crat and a "big fan" of Brown
she just doesn't know what
will happen.
"Ohio used to be sort of
the pulse of the voter, and
it's not anymore," she said.
"It's fascinating because it
seems like the voter strongly
approved women's rights,
but the representatives don't
support the voters."
Since Trump, Tucker said,
"I feel like I don't know my
community anymore."
Brown stands as a rare
Democrat to be elected
statewide in Ohio. Repub-
licans control every state-
wide non-judicial office, both
chambers of the state Legis-
lature with supermajorities
and the Oliio Supreme Court
- and they have for years.
Mark Weaver, a long-
time Ohio-based Republi-
can consultant, said, "Any-
one who suggests that Ohio
has become purple again
is going to have to offer up
evidence other than 2023."
He chalked up the resound-
ing success of November's
Issue 1, which guaranteed
an individual's right "to
make and carry out one's
own reproductive deci-
U.S. Sen. Sherrod Brown of Ohio ranks among the nation's most vulnerable Democrats
this fall. Overwhelming votes in favor of abortion rights and legalizing recreational
marijuana have encouraged Democrats in a state Donald Trump won. alex brandon/AP2Q23
'I think anybody who ignores the results of
2023 does so at their own peril. So, I'm not an
overconfident Republican. 1 do think we're going to
do well. I do believe (if he's the nominee) President
Trump will do well in Ohio. But I think we have our
work cut out for us.'
AlexTriantafilou
Ohio Republican Party Chair
sions," to abortion rights
groups outraising and out-
spending their anti-abortion
opponents, therefore driv-
ing more left-leaning voters
to the polls.
Unless those same groups
put similar millions into
Brown's race, Ohio will
"return to its reliable red
state results," Weaver said.
That's what happened in
2022, when then-Democratic
U.S. Rep. Tim Ryan ran what
was widely considered a text-
book campaign for the Sen-
ate seat vacated by Repub-
lican Rob Portman, only to
lose by more than 6 points
to Republican ven ture cap-
italist and "Hillbilly Elegy"
author JD Vance. Vance had
been backed by Trump.
But Ryan failed to gar-
ner the financial support
from national Democrats
that Brown is receiving. The
Democratic Senatorial Cam-
paign Committee has com-
mitted at least $10 million to
re-elect him and Montana
Democratic Sen. Jon Tester.
David Niven, an associate
professor of political science
at the University of Cincin-
nati, said Brown has a shot at
keeping his seat if he focuses
on abortion in a way that
connects with voters.
Brown, acutely aware of
the issue's potential to help
him, has wasted no time con-
trasting his stance on abor-
tion with those of his Repub-
lican opponents: Cleve-
land businessman Bernie
Moreno, Secretary of State
Frank LaRose and state Sen.
Matt Dolan.
"I have always been clear
vvEPA
EPA Begins Review
Of Skinner Landfill Superfund Site
West Chester, Ohio
U.S. Environmental Protection Agency is conducting a five-year review of the
Skinner Landfill Superfund site, located north of the intersection of 1-75 and
Cincinnati-Dayton Road in West Chester, Ohio. The Superfund law requires
regular checkups of sites that have been cleaned up — with waste managed
on-site — to make sure the cleanup continues to protect people and the
environment. This is the sixth five-year review of this site.
EPA completed several actions to clean up the site contaminated with volatile
compounds, heavy metals, poly chlorinated biphenyls, or PCBs, and pesticides.
These actions included groundwater interception trenches, an underground barrier,
landfill cap, and long-term (30 years) operation and maintenance.
More information is available at the MidPointe Library West Chester at
9363 Centre Pointe Dr., West Chester Township Hall, 9113 Cincinnati-Dayton
Road, and at www.epa.gov/superfund/skinner-landfill. The review is projected to
be completed by this April.
The five-year review is an opportunity for you to tell EPA about site conditions
and any concerns you have. If you have questions or comments about the site,
contact:
Scott Hansen
Remedial Project Manager
312-886-1999
hansen .scott@epa. gov
Natalie Romain
Community Involvement
Coordinator
312-353-3659
romain .natalie@epa. gov
You may also call EPA toll-free at 800-621-8431, 9:00 a.m. to 5:30 p.m., weekdays.
THE MOST
m
s
i
30
SOURCE OF
LOCAL
about where I stand: I sup-
port abortion access for all
women," he wrote in a text
to voters the week after the
November referendum. "I
know where my opponents
stand, too: All three would
overturn the will of Ohio-
ans by voting for a national
abortion ban."
Moreno, LaRose and Dolan
each celebrated the overturn-
ing of Roe v. Wade, which
returned abortion policy to
the states, but now support a
15-week federal abortion limit
that's been cast as a compro-
mise by influential anti-abor-
tion groups. The Ohio Repub-
licans' stances vary on impos-
ing limits even earlier and on
allowing exceptions later in
pregnancy.
Abortion is also a hot topic
in three closely watched Ohio
Supreme Court races, where
Democrats are defending two
sitting justices and dream-
ing of flipping a third open
seat to take control of the
seven-member court. The
future of Ohio abortion law
could be forged there, and
on other states' high courts,
as the legal questions sur-
rounding abortion rights
are hashed out.
Niven's takeaway from
2023? "If the Democrats
could make elections strictly
about issues, they would
win," he said.
Supporting evidence for
that theory can be found in
Ohio's suburbs, which may
prove pivotal again.
In 2018, Brown lost three
suburban counties - Butler,
outside Cincinnati; and Del-
aware and Licking, outside
Columbus - where the abor-
tion rights issue went on to
win last November. In two
others where Issue 1 lost nar-
rowly - die Cincinnati area's
Clermont and Warren coun-
ties - the abortion question
outperformed Brown's 2018
percentage by double digits.
All five of those counties
voted for Trump in 2020.
At the Keystone Pub &
Patio in Delaware County,
Ken Wentworth, 53, said he
isn't sure what the future
holds. He feels conflicted
himself. A moderate Repub-
lican, he voted for mari-
juana legalization last year
but "chickened out" and
abstained on the abortion
issue.
"My friends that are Dem-
ocrats, they aren't like kinda
Democrats, they're Demo-
crats with all capital bold
letters," he said. "And, on
the Republican side, they
are right-wing times a hun-
dred."
He said he remains unde-
cided in the Senate race and
doesn't like his choices for
president, either, though he
would support Trump over
Biden if no other alternative
emerges.
Independent voter
Michelle Neeld, a 43-year-
old factory worker from rural
Morrow County, voted yes
on both abortion rights and
marijuana legalization last
year. She doesn't want to
see Trump back in the White
House but says she wouldn't
vote for Biden.
She does feel Ohio is mov-
ing to the left. "I think it's get-
ting there," she said.
Christopher McKnight
Nichols, an Ohio State Uni-
versity professor of history,
said the roughly 57% sup-
port received by both Ohio
ballot issues in November
"shows just how weak many
of those conservative issues
are with actual Republican
voters." He said it will likely
prompt a "reconfiguration"
within the state GOP.
Ohio Republican Party
Chair Alex Triantafilou said
that, given the GOP's long-
standing success in the state,
he believes some within the
party are overconfident -
"and I've shared that pri-
vately and publicly with our
party faithful."
"I think anybody who
ignores the results of 2023
does so at their own peril,"
he said. "So, I'm not an over-
confident Republican. I do
think we're going to do well.
I do believe (if he's the nom-
inee) President Trump will
do well in Ohio. But I think
we have our work cut out
for us."
CANCER
DOESN'T TAKE
AN OFFSEASON
And neither do we.
CRUCIAL
CATCH
INTERCEPT CANCER
Zac Taylor
Head Coach
journal-News
Colon cancer is the second-leading cause of cancer deaths
in men and women combined. But it's highly treatable when
it's caught early. A visit with your primary care doctor is the
best place to learn about your risks for colon cancer and
when a screening is best.
If you're older than 50, and you haven't had a colonoscopy,
talk with doctor about scheduling one.
Learn how we're
intercepting cancer.
Kettering
HEALTH
-------
Attachment 6
Mann-Kendall Concentration
Trend Summary
-------
Table 4. Mann-Kendall Concentration Trend Summary
Parameter
GW-7R
GW-24
GW-30
GW-58
GW-59
GW-61
GW-63
GW-65
SW-50
SW-52
Antimony
Increasing
Not Detected
Stable
Decreasing
Decreasing
Decreasing
Downward Slope
Decreasing
Stable
Stable
Arsenic
Upward Slope
Downward Slope
Upward Slope
Stable
Stable
Downward Slope
Downward Slope
Stable
Downward Slope
Downward Slope
Barium
Downward Slope
Upward Slope
Upward Slope
Upward Slope
Upward Slope
Increasing
Downward Slope
Downward Slope
Downward Slope
Downward Slope
Beryllium
Not Detected
Not Detected
Not Detected
Not Detected
Stable
Not Detected
Not Detected
Stable
Not Detected
Stable
Cadmium
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Chromium
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Copper
Downward Slope
Downward Slope
Stable
Downward Slope
Stable
Downward Slope
Downward Slope
Downward Slope
Decreasing
Downward Slope
Iron
Stable
Downward Slope
Upward Slope
Stable
Stable
Downward Slope
Downward Slope
Stable
Stable
Downward Slope
Lead
Decreasing
Decreasing
Stable
Stable
Stable
Decreasing
Stable
Stable
Stable
Stable
Mercury
Not Detected
Not Detected
Not Detected
Not Detected
Not Detected
Stable
Not Detected
Not Detected
Not Detected
Not Detected
Nickel
Increasing
Downward Slope
Stable
Downward Slope
Increasing
Decreasing
Upward Slope
Stable
Downward Slope
Stable
Selenium
Stable
Not Detected
Decreasing
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Silver
Not Detected
Not Detected
Not Detected
Stable
Not Detected
Not Detected
Not Detected
Stable
Stable
Stable
Thallium
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Stable
Zinc
Stable
Downward Slope
Downward Slope
Stable
Downward Slope
Downward Slope
Stable
Stable
Stable
Stable
Upward Slope = A statistically significant trend was not identified, but the the data have an upward slope.
Increasing = A statistically significant trend was identified.
Decreasing = A statistically significant decreasing trend was identified.
Downward Slope = A statistically significant trend was not identified, but the data have a downward slope.
Not Detected = Concentrations are below the reporting limits for all sampling events evaluated.
Stable = Concentrations are neither increasing nor decreasing.
-------
Attachment 7
Comparison of
Pilot Test to Pre-Pilot Test
Dissolved Metal Concentrations
-------
i
e-Pilot Test Dissolved Metal Concentrations
Metal ID
Trigger Level
(Mg/L)
Groundwater Location and Dissolved Metal Concentration Range
(Mg/U
Surface Water Location and Dissolved Metal Concentration Range
(Mg/L)
Seep Location and Dissolved
Metal Concentration Range
(Mg/U
GW-7R
GW-24
GW-30
GW-58
GW-59
GW-61
GW-63
GW-65*
SW-50
SW-52
S-01
Pre-Pilot Test
PilotTest
Pre-
Pilot Test
PilotTest
Pre-
Pilot Test
PilotTest
Pre-Pilot Test
PilotTest
Pre-Pilot Test
PilotTest
Pre-Pilot Test
PilotTest
Pre-Pilot Test
PilotTest
Pre-Pilot Test
PilotTest
Pre-Pilot Test
Pilot Test
Pre-Pilot Test
PilotTest
Pre-PilotTest
PilotTest
(March 2020)
Aluminum
NTL
ND-100
ND-120
NS
ND-800
NS
ND-50
ND-650
ND-260
ND-43
ND-85
ND-290
ND-120
ND-420
ND-152
ND-3,650
ND-436
ND-27
ND-46
ND-87
ND-46
NS
ND-4 3
Antimony
60
ND-0 58
ND-0 61
NS
ND
NS
ND-1 2
ND-0 62
ND-0 63
ND-0 59
ND-0 3
ND-5 2
ND-0 53
ND-4 9
ND-0 81
ND-0 58
ND-0 5
ND-0 51
ND-0 3
ND-0 64
ND-0 18
NS
0 3-0 5
Arsenic
10
ND-6 4
0-11
NS
ND-1 2
NS
ND-0 57
ND-3 8
ND-0 34
ND-0 27
ND-0 38
ND-4 8
ND-1 4
ND-3 9
ND-0 56
ND-5 8
ND-0 56
ND-0 97
ND-1 2
ND-3 6
ND-1 8
NS
019-0 5
Barium
1,000
45-85
52-83
NS
53 6-84
NS
270-639
89-120
84-107
37-48
41-75 7
17-67
47-152
23 2-47
32 2-56 7
24 9-41
20-41
33-48
31-64 2
36-48
37-65 2
NS
ND-52 9
Beryllium
5
ND
ND
NS
ND
NS
ND
ND
ND
ND
ND-0 2
ND
ND
ND
ND
ND
ND-0 025
ND
ND
ND
ND
NS
ND
Cadmium
5
ND-0 12
ND-0 088
NS
ND-0 042
NS
ND-0 05
ND-0 19
ND-0 27
ND-0 13
ND-0 25
ND-0 41
ND-0 06
ND-1 6
ND-0 19
ND-0 22
ND-0 033
ND-0 058
ND-0 1
ND
ND-0 062
NS
ND-0 033
Calcium
NTL
140,000-210,000
170,000-240,000
NS
79,500-127,000
NS
59,000-71,000
77,000-103,000
79,900-94,000
140,000-178,000
145,000-190,000
180,000-396,00
180,000-250,000
170,000-260,000
141,000-240,000
98,000-236,000
98,000-160,000
51,800-101,000
65,100-121,000
53,100-96,000
71,700-120,000
NS
127,000-143,000
Chromium
11
ND-0 79
ND-0 3
NS
ND-1 3
NS
ND-0 23
ND-0 79
ND-0 5
ND-0 85
ND-0 51
ND-1 2
ND-0 43
ND-0 72
ND-0 28
ND-6 4
ND-1 0
ND-0 86
ND-0 9
ND-0 77
ND-0 86
NS
ND-0 4
Cobalt
NTL
ND-2 0
ND-0 43
NS
ND-0 6
NS
ND-0 18
ND-0 74
ND-0 3
ND-0 21
ND-0 46
0 1-11
ND-0 77
ND-1 7
ND-0 31
ND-50
ND-0 51
ND-0 13
ND-0 15
ND-0 56
ND-0 22
NS
0 5-0 8
Copper
25
ND-9 0
1 1-32
NS
ND-13 4
NS
ND-4 0
ND-9 3
ND-2 0
ND-10
1 1-31
ND-14
1 1-35
ND-14
ND-3 4
ND-14
1 3-2 4
1 1-76
1 0-4 9
ND-8 4
ND-3 1
NS
ND-3
Iron
5,000
ND-2,500
ND-140
NS
305-2,170
NS
20-409
ND-1,710
ND-520
ND-305
ND-90 3
ND-4,630
ND-240
ND-810
ND-189
ND-9,100
ND-1,320
ND-230
ND-54 6
ND-237
ND-130
NS
ND-34 3
Lead
4.2
ND-1 1
ND-0 1
NS
ND-1 0
NS
ND-0 13
ND-0 7
ND-0 3
ND-2 4
ND-1 8
ND-0 25
ND-1 6
ND-0 035
ND-0 1
ND-0 078
ND-0 93
ND-0 037
ND-0 1
ND-0 027
ND-0 2
NS
ND
Magnesium
NTL
26,000-36,000
31,000-46,000
NS
19,700-29,000
NS
27,700-34,000
23,100-32,000
25,400-30,400
21,000-34,700
21,300-29,000
42,000-86,000
43,000-59,000
41,000-64,000
36,700-59,000
31,000-152,000
33,200-79,000
14,000-28,300
19,600-32,000
14,500-28,000
23,000-34,000
NS
30,700-37,300
Manganese
NTL
42-1,650
5 5-517
NS
41 2-192
NS
22-32 4
0 75-51
ND-14
ND-23
ND-91
ND-380
12-295
ND-1,700
059-183
ND-270
ND-22 7
1 2-48
2 4-48 2
2 32-23
5 7-36
NS
218-601
Mercury
0.2
ND-0 14
ND
NS
ND
NS
ND
ND-0 12
ND
ND-0 13
ND
ND-0 14
ND-0 2
ND-0 14
ND
ND-0 15
ND
ND-0 09
ND
ND-0 17
ND
NS
ND
Nickel
96
ND-5 43
14-4 4
NS
ND-2 0
NS
ND-47 7
ND-1 4
ND-1 5
ND-14
1 6-51
1 6-34
3 3-7 0
ND-19
1 0-3 5
0 52-7 4
ND-1 8
ND-1 85
ND-1 8
ND-7 2
ND-1 9
NS
ND-5 2
Potassium
NTL
1,700-2,600
1,700-2,800
NS
1,980-3,100
NS
10,000-13,600
2,500-5,330
2,730-3,320
5,500-17,000
65-10,600
70-11,800
3,810-7,300
2,700-5,900
2,540-4,800
1,300-4,770
1,300-3,200
2 9-2,630
1,560-3,700
1,600-2,800
1,500-3,700
NS
7,000-13,900
Selenium
8.5
ND-0 88
ND-0 6
NS
ND
NS
ND-3 6
ND-0 84
ND-0 89
ND-1 0
ND-2 0
ND-0 90
ND-1 9
ND-0 48
ND-1 3
ND-1 34
ND-1 1
ND-0 59
ND-0 8
ND-0 91
ND-1 1
NS
ND
Silver
10
ND
ND
NS
ND
NS
ND
ND
ND-0 03
ND-0 67
ND
ND-0 02
ND
ND
ND
ND-0 83
ND-0 22
ND
ND
ND-0 67
ND
NS
ND
Sodium
NTL
7,000-12,900
7,700-13,700
NS
9,640-37,000
NS
110,000-153,000
20,000-40,700
20,100-25,800
16,000-91,200
15,300-28,000
27-67,700
20,000-43,300
9,600-47,700
7,150-26,000
18,000-28,800
13,600-25,000
36,100-64,000
35,800-308,000
38,400-100,000
42,700-321,000
NS
16,400-27,900
Thallium
40
ND-4 3
ND-0 082
NS
ND-0 14
NS
ND-0 13
ND-0 035
ND-0 024
ND-0 031
ND-0 19
ND-0 044
ND-0 2
ND-0 024
ND-0 067
ND-0 062
ND-0 048
ND-1 9
ND-0 032
ND-0 037
ND-0 11
NS
ND
Vanadium
NTL
01-11
ND-0 35
NS
ND-1 9
NS
ND-0 29
ND-3 7
ND-0 46
ND-12
ND-0 14
ND-13
ND-0 37
ND-13
ND-0 3
ND-13
ND-0 71
ND-7 7
ND-0 53
ND-8 1
ND-0 9
NS
ND
Zinc
86
ND-11
ND-8 2
NS
ND-7 3
NS
ND-6 7
ND-4 57
ND-39 5
ND-8 0
ND-9 7
ND-20
ND-8 9
ND-61
ND-6 5
ND-23
ND-5 7
ND-12
ND-2 3
ND-4 1
ND-11 6
NS
ND-3 3
Notes:
Pre-Pilot Test Data are from samples collected from 2011 through March 2016; whereas pilot test data are from samples collected from April 2016 through March 2022.
ND - Not Detected
NS - Not Sampled; not In pre-pilot test monitoring program
NTL- No Trigger Level established
Detected concentrations with J and B data qualifiers, such as J and B, are included in table without the qualifiers.
* -Data reported from the September 26,2017 sample from GW-65 were determined to be anomalous via confirmation and subsequent samp ling, and not considered in this table.
-------
Attachment 8
Groundwater Elevation and Gradient
Data (2014-2022)
-------
Well Type
Location
Groundwater Elevation (ft, msl)
Pre-PilotTest
Groundwater Elevation (ft, msl)
Year 1 of PilotTest
Groundwater Elevation (ft, msl)
Year 2 of Pi lotTest
Groundwater Elevation (ft, ms 1)
Year 3 of Pi lotTest
Groundwater Elevation (ft, msl)
Year 4 of Pi lotTest
Groundwater Elevation (ft, msl)
Year 5 of PilotTest
Groundwater Elevation (ft, msl)
Year 6 of PilotTest
Mar-14
Jun-14
Sep-14
Dec-14
Mar-15
Jun-15
Sep-15
Dec-15
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Oct-19
Mar-20
Mar-21
Mar-22
Piezometers
P-l
677.3
677.24
NM
676.83
681.13
677.27
676.55
677.85
678.2
677.14
678.42
676.01
679.19
676.4
680.35
677.90
681.37
Dry
Dry
Diy
Diy
P-2
679.22
679.34
680.01
NM
NM
683.86
680.07
680.09
680.49
680.58
NM
681.16
681.76
680.31
680.66
680.77
680.74
680.22
681.39
681.64
682.46
P-3R
668.79
669.35
668.31
668.36
668.65
668.65
668.78
668.65
668.65
668.85
668.63
668.61
668.51
668.93
669.37
NM
669.03
668.86
668.83
NM
668.79
P-4
697.12
696.5
695.03
695.54
699.68
696.11
695.18
696.86
698.51
695.56
696.93
695.02
698.64
694.72
698.21
696.69
699.38
694.84
699.02
699.12
698.58
P-5
698.33
698.03
696.44
695.71
698.05
696.91
696.56
697.84
700.23
697.42
697.15
696.38
700.65
696.82
NM
701.26
706.70
695.93
707.16
NM
703.9
P-6
698.65
698.16
697.05
698.75
700.56
699.10
697.34
699.56
699.1
697.65
698.78
697.38
700.29
697.1
699.09
698.84
700.03
697.23
700.23
700.29
700.04
P-7
Diy
Dry
Diy
695.48
Diy
695.63
Diy
695.68
695.46
695.5
695.65
Dry
695.47
695.53
696.78
695.43
695.79
695.23
695.55
695.51
697.34
P-8
Diy
Dry
Diy
Dry
Diy
Dry
Dry
734.13
Dry
Dry
NM
NM
NM
Dry
Dry
Dry
Dry
Dry
Dry
Dry
Dry/Obstruction
P-9R
NM
746.69
743.74
745.37
747.68
747.16
745.8
745.89
748.23
NM
NM
NM
NM
743.4
747.48
744.36
748.27
743.8
745.91
745.43
745.49
P-10R
740.13
NM
748.03
749.7
739.01
739.44
739.14
738.43
740.08
739.6
738.51
737.79
739.02
739
740.18
739.43
741.04
738.04
740.04
NM
NM
P-11R
736.9
738.25
735.53
733.27
733.98
737.58
736.6
734.42
737.77
738.64
735.2
733.28
734.48
736.22
738.0
736.53
739.10
737.38
737.65
737.43
737.39
P-12R
718.07
718.25
715.77
715.7
Diy
718.10
717.35
717.03
718.33
717.99
715.72
714.89
717.54
715.91
718.17
717.70
718.20
NM
718.08
718.10
718.00
Monitoring
Wells
GW-06R
676.97
676.2
674.05
677.49
679.07
677.66
675.26
677.91
677.66
676.17
678.51
676.41
679.06
674.96
677.55
676.53
679.12
674.74
679.05
678.59
677.13
GW-07R
678.19
677.34
673.74
678.16
679.14
678.38
675.82
678.61
678.36
676.19
678.63
672.68
679.1
673.87
678.23
677.88
679.34
674.23
676.41
679.05
678.49
GW-24
676.82
677.28
676.49
677.06
677.62
677.03
676.65
677.02
677.99
676.94
677.11
676.99
677.31
676.73
677.24
676.98
677.63
676.57
677.38
677.49
677.40
GW-26
669.19
669.08
668.08
669.09
669.30
668.96
668.61
669.13
669.52
668.87
669.02
668.68
669.31
668.67
670.51
669.29
668.93
668.06
669.31
669.33
669.28
GW-30
NM
668.01
667.21
NM
667.70
667.79
667.85
667.89
667.89
667.9
668.08
667.81
667.8
665.33
668.12
668.28
668.21
667.95
668.06
667.94
667.92
GW-58
673.17
673.98
672.29
671.9
673.21
673.61
673.65
673.08
674.49
673.98
673.57
671.73
673.73
673.29
674.99
675.17
674.88
673.34
674.11
674.49
674.62
GW-59
680.4
680.82
678.12
680.7
680.92
680.13
679.13
680.74
680.54
679.3
680.66
680.73
680.92
678.52
679.81
679.78
680.68
678.28
680.73
681.00
680.42
GW-60
683.65
682.79
678.21
685.22
687.05
683.77
678.99
686.29
685.93
681.55
686.7
685.58
686.96
678.25
683.9
683.11
686.12
678.92
686.64
686.93
685.17
GW-61
677.8
677.96
677.32
677.73
678.81
677.65
677.42
677.86
677.94
677.65
677.86
677.84
678.05
677.57
677.84
677.58
677.89
677.3
677.84
678.18
679.01
GW-62A
675.94
677.77
676.85
675.75
676.42
678.30
679.39
678.28
676.6
678.03
678.84
678.08
676.4
679.05
676.57
679.37
676.76
679.12
676.6
676.2
676.35
GW-62B
681.32
680.25
680.67
681.29
681.28
681.17
681.01
681.46
680.48
680.67
681.41
681.18
681.7
680.77
680.93
680.94
681.64
680.46
681.75
681.63
681.22
GW-63
696.18
694.52
691.66
695.94
697.01
694.48
692.16
696.6
697.03
692.6
696.19
694.34
697.07
691.62
695.91
694.65
697.02
691.76
696.76
696.9
696.78
GW-64
687.04
692.32
693.99
694.68
698.52
695.49
692.94
695.98
697.31
694.07
NM
694.77
698.4
692.57
696.82
695.84
696.00
693.82
697.56
697.36
696.61
GW-65
698.22
695.29
692.4
696.35
700.04
696.62
692.37
698.46
697.64
693.34
699.47
692.15
699.23
691.8
697.99
696.67
699.08
692.4
699.31
699.29
699.3
GW-66
682.14
NM
NM
682.83
683.21
681.81
681.12
683.27
682.56
681.18
682.49
683.16
682.73
680.52
682.15
681.58
682.43
680.63
682.78
682.84
NM
Gas Probes
GP-6
759.79
759.2
757.52
759.13
761.83
759.22
758.24
760.57
760.75
758.05
758.67
757.43
761.44
757.56
759.67
759.30
761.06
Dry
761.44
761.37
760.31
GP-7
747.1
746.83
Dry
746.47
747.17
743.90
Dry
747.22
747.26
743.25
746.66
745.8
747.35
743.07
746.75
745.21
747.50
Dry
747.34
747.16
747.25
Groundwater Gradient
0.072
0.067
0.087
0.086
0.091
0.092
0.067
0.083
0.083
0.092
0.069
0.066
0.069
0.077
0.078
0.077
0.092
0.082
0.081
0.070
0.075
Notes:
NM ¦ Not Measured; due to circumstances such as bees/hornets, frozen/unworkable lock, etc.
ft, msl ¦ feet above mean sea level
| Brown" '' 'c^ i-'d' II"' j
-------
Attachment 9
Groundwater Potentiometric
Surface Maps
-------
O GAS VENT
• GAS PROBE
0 GROUND WATER MONITORING WELL
-0- PIEZOMETER
-f- OUTFALL SURFACE WATER RUN OFF SAMPLE LOCATION
• CREEK SURFACE WATER SAMPLE LOCATION
• OBSERVATION WELL
® STAFF GUAGE
695.56 GROUNDWATER ELEVATION (MSL-FEET)
POTENTIOMETRIC SURFACE CONTOUR (DASHED WHERE INFERRED)
GROUNDWATER FLOW DIRECTION
NOTES:
PIEZOMETER P-3R AND MONITORING WELL GW-62A ARE
SCREENED AT DEEPER INTERVALS AND THEREFORE GROUND
WATER ELEVATIONS WERE NOT INCLUDED IN CONTOURING.
Caldwell ¦
CO
CL
I
SKINNER LANDFILL
POTENTIOMETRIC MAP
DATE: MARCH 29, 2016
FIGURE
A-1
-------
GAS PROBE
GROUND WATER MONITORING WELL
PIEZOMETER
-f- OUTFALL SURFACE WATER RUN OFF SAMPLE LOCATION
CREEK SURFACE WATER SAMPLE LOCATION
OBSERVATION WELL
® STAFF GUAGE
695.56 GROUNDWATER ELEVATION (MSL-FEET)
NM NOT MEASURED
POTENTIOMETRIC SURFACE CONTOUR (DASHED WHERE INFERRED)
GROUNDWATER FLOW DIRECTION
NOTES:
PIEZOMETER P-3R AND MONITORING WELL GW-62A ARE
SCREENED AT DEEPER INTERVALS AND THEREFORE GROUND
WATER ELEVATIONS WERE NOT INCLUDED IN CONTOURING.
SKINNER LANDFILL
POTENTIOMETRIC MAP
-------
Attachment 10
Monitoring Well and Piezometer
Hydrographs (2014 - 2022)
-------
Monitoring Well Hydrograph
705
700
ilit\
695
690
//
w
¦GW06R
• GW-07R
•GW-24
•GW-26
¦GW-30
GW-58
• GW-59
¦ GW-60
¦ GW-61
•GW-62A
¦GW-62B
• GW-63
GW-64
• GW-65
»GW-66
660
#
^ J* J? ^ jf jf J# V# .#
^ XJ#* ^ S# ^ ^ ^ 0^# ^ ^ cj£ fS* "P <5#
Date
-------
Piezometer Hydrograph
760
750
730
720
1
m
i>
710
S
a
700
690
680
s\/
: P-3R
P-6
P-9R
-~-P 10R
-•—P41R
«-~ P42R
670
66(
N*V> > * * #" ^ ¦#'" #" #" #" •#'"
Date
>
\.">
>x ^v"
^ 0<
.V „>
^ <»*
-------
Attachment 11
Analytical Data Summary Tables
(2016-2022)
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-07R
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
500 U
50 U
120
72
92.3
68.3
50.0 UJ
10.0 U
2.1 J
29.2
10.0 U
200
Antimony
0.3 J
1.0 U
0.21 J
1.0 U
0.19 J
1.0 U
1.0 U
2.0 U
0.24 J
0.3 J
0.48 J
0.61 J
60
60
Arsenic
0.2 J
0.2 J
0.53 JB
0.18 J
0.28 J
1.0 U
1.0 U
1.1
0.14 J
0.21 J
0.29 J
0.66 J
10
10
Barium
53
52
83
65
59
63.1
54.0
82.3
62.7 J
61.6 J
60.0
66.1 UJ
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.043 J
0.088 J
0.2 U
0.055 J
0.2 U
0.2 U
0.2 U
0.032 J
0.046 J
0.038 J
0.2 U
5
5
Calcium
170,000
200,000
170,000
240,000
170,000
176,000
177,000
183,000
173,000 J
185,000
172,000
168,000
5,000
Chromium
0.2 J
0.3 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.21 J
0.2 J
0.21 UJ
11
10
Cobalt
0.1 J
0.1 J
0.280 J
0.078 J
0.056 J
1.0 U
1.0 U
1.0 U
0.3 J
0.43 J
0.37 J
0.36 J
50
Copper
3.2
2.1
2.5
3.2 B
1.3 B
2.0
1.7
1.1
1.3
3.2 J
1.4
1.6 UJ
25
25
Iron
87
52
20 U
140
20 U
73.8
17.2
20.0 UJ
100 U
100 U
114
100 U
5,000
100
Lead
0.1 J
0.073 J
0.055 J
0.088 J
0.058 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.1 J
1.0 U
4.2
3
Magnesium
33,000
38,000
32,000
46,000
31,000
34,500
31,700
32,100
33,600 J
37,200
33,700
30,800
5,000
Manaanese
11.0
7.1
1.4
31
5.5
517
20.3
6.1 J
13.0 J
19.1
12.9
33.2
15
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
2.2
1.6
1.8
2.1
1.4
4.4
2.1
1.9 J
2.3 J
3.2
2.6
4.0 J
96
40
Potassium
1,800
2,000
2,000
2,800
1,800 B
1,840
1,700
1,970
1,940 J
2,130
1,420
1,250 UJ
5,000
Selenium
1.0 U
1.0 UJ
0.6 J
1.0 U
1.0 UJ
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
7,800
9,200
8,600
13,000
7,700 B
9,180
9,840
9,090
9,550 J
13,700 J
11,500
9,380
5,000
Thallium
1.0 U
0.030 J
1.0 U
0.082 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.2 J
0.2 J
0.18 J
0.18 J
0.35 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
0.34 J
0.48 J
50
Zinc
4.9 J
6.8 J
7.9 J
4.8 J
8.2 JB
10.0 U
10.0 U
10.0 U
4.9 J
8.1 J
4.9
6.6
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
180
970
50 U
1,300
120
185
165
109
498 J+
137 UJ
381
48.8 UJ
Antimony
0.33 J
0.18 J
0.19 J
1.0 U
0.15 J
1.0 U
1.0 U
2.0 U
0.28 J
0.28 J
0.48 J
0.56 J
Arsenic
0.3 J
1.1
0.23 J
1.2
0.16 J
1.0 U
1.0 U
1.1
0.47 J
0.23 J
0.67 J
0.71 J
Barium
55
78
84
82
55
64.4
62.5
86.8
68.4
65.3
70.8
67.0 UJ
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.1 J
0.051 J
0.1 J
0.045 J
0.2 U
0.2 U
0.24
0.066 J
0.051 J
0.12 J
0.2 U
Calcium
170,000
200,000
190,000
230,000
180,000
225,000
190,000
173,000
179,000 J
174,000
181,000
162,000
Chromium
0.6 J
1.5
1.5
1.8
1.0 U
1.0 U
1.0 U
1.0 U
0.69 J
0.37 J
0.94 J
0.31 UJ
Cobalt
0.1 J
0.7 J
0.27 J
0.87 J
0.1 J
1.0 U
1.0 U
1.0 U
0.64 J
0.55 J
0.56 J
0.39 J
Copper
3.4
5.0
2.7
7.0 B
1.2 B
2.1
2.6
3.9
2.6
2.2 UJ
6.4
1.2
Cvanide
5.0 U
NS
1.63 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
440
2,200
46
2,400
46
267
473
398 J
1,010 J
316
1,160
131
Lead
0.6 J
1.1
0.07 J
2.1
0.073 J
1.0 U
1.0 U
1.1
0.85 J
0.34 J
1.5
0.16 J
Magnesium
31,000
37,000
34,000
45,000
35,000
40,300
34,500
29,400
33,300 J
35,100
35,800
30,300
Manganese
13.0
100
2.6
110
16
502
18.2
18.7 J
47.9 J
31.1 UJ
33.4
51.4
Mercurv
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
1.50
2.5
1.2
4.3
1.3
4.5
1.90
2.3
2.7
3.4
3.1
2.9 UJ
Potassium
1900
2,800
2,100
4,200 B
2,000 B
2,410
1,620
2,330
1,960
1,980
1,930
1,250 UJ
Selenium
1.0 U
0.9 J
1.0 U
1.1
0.7 JB
1.0 U
1.0 U
2.0 U
0.34 J
1.0 U
1.0 U
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
7,600
9,700
8,900
11,000
8,200
10,800
9,210
8,500
9,120 J
12,600 J
11,400
9,240
Thallium
0.046 J
0.037 J
1.0 U
0.17 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
0.7 J
2.1
0.34 J
2.7
0.17 J
1.0 U
1.0 U
4.0 U
1.0 J
0.38 J
1.1
0.56 J
Zinc
3.8 J
23
10
18
4.7 J
10.1
10.0 U
13.5
8.8
6.0
11.2
6.5
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
NS
BRL
NS
Acetcne
1.2.4-Tnchlorobenzene
24.2
0.6 J
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
BRL
NS
NS
BRL
NS
Caprolactam
12
BRL
BRL
38.2
10
Fluor an thene
BRL
0.061 J
10
10
Phenanthrene
0.13 J
10
10
Di-n-butyl phthalate
1.0
BRL
190
10
bis (2-ethylhexyl) phthalate
0.53
BRL
0.98
BRL
49
10
Pesticides / PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-24
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
NS
800
340
23 JB
74
2,340
50.0 U
257 J
1.4 J
1.5 J
14.6
8.5 UJ
200
Antimony
NS
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
60
60
Arsenic
NS
1.0
0.88 JB
1.2
0.43 J
1.2
1.0 U
1.3
1.0 U
0.54 J
0.36 J
0.27 J
10
10
Barium
NS
60
62
64
69
53.6
71.8
70.9
74.7 J
57.4 J
84.0
64.7 UJ
1,000
200
Beryllium
NS
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
NS
0.2 U
0.2 U
0.2 U
0.042 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Calcium
NS
110,000
93,000
98,000
110,000
79,500
111,000
107,000
120,000 J
118,000
127,000
98,000
5,000
Chromium
NS
1.3
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.3 J
0.34 J
0.25 UJ
11
10
Cobalt
NS
0.6 J
0.350 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.15 J
0.21 J
0.18 J
0.13 J
50
Copper
NS
1.2
0.98 J
0.55 JB
0.5 JB
1.0 U
13.4
1.0 U
0.61 J
2.3 J
0.42 J
0.5 UJ
25
25
Iron
NS
2,000
1,100
610
500
2,170
387
967 J
305
575
823
526
5,000
100
Lead
NS
1.0 J
0.38 J
0.07 JB
0.083 J
1.0 u
1.0 U
1.0 U
1.0 u
1.0 U
1.0 U
1.0 U
4.2
3
Magnesium
NS
26,000
22,000
25,000
29,000
19,700
26,900
24,200
23,600 J
27,400
28,200
20,200 UJ
5,000
Manaanese
NS
190
180
170
190
164
145
192 J
41.2 J
163
138
95.9
15
Mercury
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
NS
2.0
1.3
0.82 JB
0.52 J
1.1
1.0 U
1.7 J
1.0 J
1.4
1.1
1.1 UJ
96
40
Potassium
NS
2,900
2,800
3,100
2,500 B
3,390
2,400
2,900
1,980 J
2,250
2,560
1,840
5,000
Selenium
NS
1.0 UJ
1.0 U
1.0 U
1.0 UJ
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
NS
31,000
37,000
49,000
34,000 B
27,500
30,700
30,100
9,640 J
19,000 J
25,800
14,900
5,000
Thallium
NS
0.049 J
1.0 U
0.14 JB
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
NS
1.9
0.46 U
0.18 JB
0.15 JB
1.0 U
1.0 U
4.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
50
Zinc
NS
7.3 J
3.6 J
2.7 JB
2.1 JB
10.0 U
10.0 U
10.0 U
3.7 J
5.3 J
3.0 U
1.4 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
NS
250 U
1,400
1,600
11,000
273
4,750
184
9.5 J+
102 UJ
180
31.7 UJ
Antimony
NS
1.0 U
1.0 U
1.0 U
0.25 J
1.0 U
1.0 u
2.0 U
0.09 J
1 U
0.28 UJ
1.0 U
Arsenic
NS
0.9 J
1.5
1.4
5.6
1.1
2.1
1.2
0.14 J
0.62 J
0.43 J
0.28 J
Barium
NS
56
57
66
220
51.2
93.2
67.5
65.0
59.6
86.7
79.0
Beryllium
NS
1.0 U
1.0 U
1.0 U
0.6 J
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 UJ
0.2 U
Cadmium
NS
0.2 U
0.09 J
0.1 J
0.21
0.2 U
0.2 U
0.2 U
0.17 J
0.043 J
0.024 J
0.2 U
Calcium
NS
98,000
100,000
110,000
200,000
86,400
160,000
102,000
118,000 J+
115,000
131,000
119,000
Chromium
NS
0.2 J
1.7
1.4
17
1.0 U
5.9
1.0 U
2.0 U
0.43 J
0.64 J
0.28 UJ
Cobalt
NS
0.1 J
0.92 J
0.69 J
9.0
1.0 U
3.1
1.0 U
0.15 J
0.29 J
0.3 J
0.17 J
Copper
NS
0.2 J
1.9
1.6 B
17 B
1.0 U
5.7
1.0 U
0.62 J
0.72 UJ
0.81 J
0.38 J
Cyanide
NS
NS
1.56 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
NS
770
2,900
3,300
19,000
847
8,040
877 J
465 J
849
1,400
630
Lead
NS
0.2 J
1.1
1.1
13
1.0 U
4.0
1.0 U
1.0 U
1.0 U
0.25 J
1.0 U
Magnesium
NS
24,000
25,000
27,000
42,000
20,700
34,200
23,200
21,700 J
26,900
29,600
25,000
Manaanese
NS
180
200
230
620
151
353
176 J
50.0 J
180 UJ
174
105
Mercury
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
NS
0.5 J
2.4
3.4
20
1.1
8.4
1.0 U
2.4
1.4
1.3
0.92 UJ
Potassium
NS
2,400
3,300
3,800 B
6,400 B
2,540
4,450
2,920
1,770
2,100
3,020
2,150 UJ
Selenium
NS
1.0 UJ
1.0 U
1.0 U
2.3 B
1.0 U
1.0 U
2.0 U
0.22 J
1.0 U
1.0 UJ
1.0 U
Silver
NS
0.2 U
0.023 J
0.2 U
0.09 J
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 UJ
0.5 U
Sodium
NS
31,000
39
49,000
31,000
30,800
28,000
29,700
8,540 J
18,200 J
24,500
17,200
Thallium
NS
0.032 J
1.0 U
0.2 J
0.26 J
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
NS
0.3 J
2.2
2.1
26
1.0 U
11.2
4.0 U
1.0 U
0.28 J
0.4 J
1.0 U
Zinc
NS
2.8 J
6.5 J
6.1 JB
48
10.0 U
18.7
10.0 U
2.8 J
3.2
1.8 J
1.6 J
Volatile Orsanic ComDounds (VOCst
NS
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
NS
NS
Di-n-butyl phthalate
2.4
BRL
1.2
BRL
BRL
190
10
Naphthalene
BRL
BRL
BRL
BRL
0.14 J
Phenol
BRL
64
BRL
BRL
BRL
370
10
Pesticides / PCBs
NS
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-30
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
NS
250 U
50 U
50
44 J
50.0 U
50.0 U
50.0 UJ
1.8 J
2.9 J
3.3 UJ
4.0 UJ
200
Antimony
NS
0.25 J
1.0 U
1.0 U
1.0 U
1.0 U
1.2
2.0 U
0.11 J
1.0 U
0.1 UJ
1.0 U
60
60
Arsenic
NS
1.0 U
0.57 JB
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.14 J
0.39 J
0.26 J
0.17 J
10
10
Barium
NS
380
390
500
270
507
493
550
343 J
312 J
639
597
1,000
200
Beryllium
NS
1.0 u
1.0 u
1.0 u
1.0 U
1.0 u
1.0 U
1.0 u
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
NS
0.2 U
0.05 J
0.2 U
0.20 U
0.2 U
0.2 U
0.2 U
0.04 J
0.042 J
0.054 J
0.2 U
5
5
Calcium
NS
63,000
59,000
68,000
56,000
60,900
63,700
62,200
64,600 J
64,200
71,000
65,000 UJ
5,000
Chromium
NS
0.23 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.21 J
0.22 J
2.0 U
11
10
Cobalt
NS
0.1 J
0.092 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.13 J
0.18 J
0.076 J
0.091 J
50
Copper
NS
0.64 J
0.45 J
2.1 B
1.4 B
1.0 U
1.0 U
1.0 U
1.8
4.0 J
0.5 J
0.79 UJ
25
25
Iron
NS
290
190
170
20 J
354
349
409 J
36.9 J
25.5 J
323
374
5,000
100
Lead
NS
0.1 J
1.0 u
1.0 u
1.0 U
1.0 U
1.0 U
1.0 u
1.0 U
1.0 U
1.0 U
1.0 U
4.2
3
Magnesium
NS
30,000
29,000
34,000
28,000
27,700
28,800
29,400
29,900 J
30,100
31,100
27,700
5,000
Manganese
NS
28
22
27
24
29.6 J
29
31.4 J
23.1 J
23.6
32.4
30.9
15
Mercury
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
NS
0.89 J
0.28 J
0.49 J
0.27 J
1.0 U
47.7
1.0 U
0.63 J
0.82
0.61
0.98 UJ
96
40
Potassium
NS
11,000
10,000
12,000
12,000 B
10,200
10,500
10,600
12,800 J
13,600
11,100
10,900
5,000
Selenium
NS
2.3 J
3.6
0.5 J
1.6 B
1.0 U
1.9
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
NS
140,000
110,000
130,000
140,000 B
123,000
120,000
121,000
149,000 J
153,000 J
126,000
123,000
5,000
Thallium
NS
0.033 J
1.0 U
0.13 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
NS
0.19 J
1.0 U
0.17 J
0.29 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
1.0 U
1.0 U
50
Zinc
NS
3.0 J
6.5 J
2.6 J
2.5 JB
10.0 U
10.0 U
10.0 U
3.7 J
6.7 J
1.6 J
2.5 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
NS
250 U
50 U
27
51
50.0 U
50.0 U
106
34.2 J+
36.8 UJ
26.4
13.5 UJ
Antimony
NS
0.3 J
1.0 U
1.0 U
1.0 U
1.0 U
1.1
2.0 U
0.11 J
1.0 U
0.17 UJ
1.0 U
Arsenic
NS
0.3 J
0.91 J
1.0 u
1.0 U
1.0 U
1.0 U
1.0 U
0.22 J
0.32 J
0.37 J
0.25 J
Barium
NS
380
400
510
270
494
560
538
331
331
680
546
Beryllium
NS
1.0 U
1.0 U
1.0 U
1.0 u
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
Cadmium
NS
0.2 U
0.045 J
0.2 U
0.086 J
0.2 U
0.2 U
0.2 U
0.093 J
0.063 J
0.082 J
0.2 U
Calcium
NS
66,000
62,000
66,000
61,000
67,500
63,000
64,500
64,500 J+
61,600
71,000
62,500 UJ
Chromium
NS
0.44 J
1.4
0.32 J
0.2 J
1.0 U
1.0 U
1.0 U
0.23 J
0.4 J
0.29 J
0.41 UJ
Cobalt
NS
0.1 J
0.11 J
1.0 U
1.00 U
1.0 U
1.0 U
1.0 U
0.17 J
0.2 J
0.11 J
0.1 J
Copper
NS
0.47 J
0.48 J
0.5 JB
1.50 B
1.0 U
1.0 U
1.1
0.56 J
2.9 UJ
0.73 J
0.48 J
Cyanide
NS
NS
1.54 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
NS
620
290
310
300
435
413
649 J
269 J
343
498
581
Lead
NS
0.1 J
1.0 U
0.09 J
0.068 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.18 J
1.0 U
Magnesium
NS
32,000
30,000
32,000
30,000
30,400
28,700
29,400
28,900 J
29,000
31,300
26,600
Manaanese
NS
30
25
27
24
28.6
32.3
32.9 J
24.5 J
26 UJ
35.2
31.5
Mercury
NS
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
NS
0.57 J
0.47 J
0.32 J
0.49 J
1.0 U
1.0 U
1.0 U
0.85
0.83
0.78
1.4 UJ
Potassium
NS
12,000
11,000
1,200 B
13,000 B
11,300
10,600
11,100
12,000
12,200
12,000
10,700
Selenium
NS
2.0 J
2.8
0.61 J
0.9 JB
2.0 UJ
1.0 U
2.0 U
0.25 J
1.0 U
1.0 U
1.0 U
Silver
NS
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
NS
150,000
120,000
130,000
150,000
132,000
123,000
122,000
142,000 J
146,000 J
121,000
120,000
Thallium
NS
0.039 J
1.0 U
0.22 J
0.027 J
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
NS
0.16 J
1.0 U
0.17 J
0.29 J
1.0 U
1.0 U
4.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
Zinc
NS
5.7 J
3.1 J
10 U
4.1 J
10.0 U
10.0 U
10.0 U
4.4
4.2
1.8 J
2.2 J
Volatile Orsanic ComDounds (VOCst
NS
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
BRL
NS
NS
NS
Di-n-butyl phthalate
1.3
BRL
BRL
BRL
190
10
bis (2-ethylhexyl) phthalate
BRL
0.97
BRL
BRL
49
10
Phenanthrene
BRL
BRL
0.084 J
0.05 J
10
10
Pesticides / PCBs
NS
NS
NS
NS
NS
NS
NS
Endrin aldehyde
BRL
BRL
0.015
BRL
BRL
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-58
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
30.0 J
250 U
260
46
56
50.0 U
50.0 U
114 J
2.8 J
1.8 J
23.7
114
200
Antimony
1.0 U
0.5 J
0.52 J
0.63 J
0.54 J
1.0 U
1.0 U
2.0 U
0.13 J
1.0 U
0.16 UJ
1.0 U
60
60
Arsenic
0.2 J
0.2 J
0.34 JB
0.25 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.16 J
10
10
Barium
97
88
88
93
86
84.0
87.6
93.7
107 J
96.4 J
94.3
90.2
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.06 J
0.044 J
0.041 J
0.2 U
0.2 U
0.2 U
0.27
0.047 J
0.037 J
0.031 J
5
5
Calcium
83,000
83,000
82,000
82,000
81,000
79,900
85,000
86,100
94,000 J
93,300
89,200
84,600
5,000
Chromium
0.4 J
0.2 J
0.46 J
1.0 U
0.28 J
1.0 U
1.0 U
1.0 U
2.0 U
0.5 J
0.31 J
0.34 UJ
11
10
Cobalt
1.0 U
0.1 J
0.3 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.11 J
0.15 J
0.091 J
0.16 J
50
Copper
1.0 J
1.1
1.7
1.4 B
0.72 JB
1.0 U
1.1
1.0 U
2.0
0.8 J
1.2
0.93 UJ
25
25
Iron
140
29 UJ
520
18
20 U
10.0 U
217
178 J
100 U
100 U
76.5 J
170
5,000
100
Lead
0.1 J
1.0 U
0.3 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.15 J
4.2
3
Magnesium
26,000
29,000
28,000
29,000
28,000
25,400
26,600
28,300
30,400 J
30,400
28,400
25,800
5,000
Manaanese
3.9
4
14
0.57 J
1.0
1.7
1.0 U
6.3 J
3.2 J
0.32 J
2.1
7.0
15
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
1.4
0.9 J
1.3
0.47 J
0.33 J
1.0 U
1.0 U
1.0 UJ
1.5 J
1.1
0.94
0.92 UJ
96
40
Potassium
2,500
3,000
3,100
3,200
3,200 B
2,730
2,690
2,880
3,320 J
2,920
2,900
2,590 UJ
5,000
Selenium
1.0 U
1.0 UJ
0.89 J
1.0 U
1.0 UJ
1.0 u
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.03 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
21,000
23,000
22,000
23,000
23,000 B
20,100
21,100
22,600
25,800 J
25,600 J
25,500
22,200
5,000
Thallium
0.021 J
0.024 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.3 J
0.1 J
0.46 J
1.0 U
0.1 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
1.0 U
0.2 J
50
Zinc
2.3 J
2.6 J
4.5 J
3.3 J
10 U
10.0 U
10.0 U
10.0 U
39.5 J
2.0 J
2.6 J
3.1
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
430
99
400
250
280
68.4 UJ
240
88.4
450 J
686 UJ
721
138
Antimony
1.0 U
0.5 J
0.5 J
0.59 J
0.66 J
1.0 U
1.0 U
2.0 U
0.16 J
0.19 J
0.17 UJ
1.0 U
Arsenic
0.5 J
0.2 J
0.42 J
1.0 U
0.22 J
1.0 U
1.0 U
1.0 U
0.43 J
0.9 J
0.86 J
0.18 J
Barium
95
91
89
90
89
88.8
90.6
94.0
108
104
99.6
92.3
Bervllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.051 J
0.041 J
0.2 U
Cadmium
0.2 U
0.044 J
0.042 J
0.2 U
0.054 J
0.2 U
0.2 U
0.2 U
0.31
0.072 J
0.033 J
0.2 U
Calcium
86,000
84,000
87,000
83,000
81,000
92,500
84,700
86,400
91,700 J+
88,900
93,600
85,800
Chromium
0.8 J
0.8 J
0.79 J
0.34 J
0.45 J
1.0 U
1.0 U
1.0 U
0.95 J
1.7 J
1.7 J
0.45 J
Cobalt
0.2 J
0.2 J
0.37 J
0.051 J
0.12 J
1.0 U
1.0 U
1.0 U
0.47 J
0.9 J
0.7 J
0.18 J
Copper
1.2
1.4
1.3
1.0 JB
0.78 JB
1.0 U
1.0 U
1.3
2.8
2.5 UJ
1.8
0.78 J
Cvanide
5.0 U
NS
1.4 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 UJ
5.0 U
5.0 U
10.0
10.0
Iron
790
540
820
230
390
58.9 UJ
424
216 J
1,020 J
304
1,860
462
Lead
0.5 J
0.3 J
0.47 J
0.12 J
0.23 J
1.0 U
1.0 U
1.0 U
0.52 J
1.4
1.0
0.18 J
Magnesium
27,000
28,000
30,000
30,000
28,000
29,600
27,100
27,100
28,100 J
28,700
29,500
25,900
Manganese
19
17
20
4.4
11
1.6
19.1
9.8
25.6 J
62.2 UJ
47.5
12.1
Mercurv
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
1.00
0.84 J
0.63 J
0.42 J
0.55 J
1.00 U
1.0 U
1.3
2.4
2.9
2.0
1.0 UJ
Potassium
2,800
3,000
3,200
3,400
3,100 B
3,020
2,730
2,870
3,290
2,740
3,380
2,490 UJ
Selenium
1.0 U
1.1 J
0.9 J
1.0 J
1.0 UJ
1.0 U
1.0 u
2.0 U
0.39 J
1.0 U
1.0 U
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
22,000
22,000
22,000
24,000
22,000
22,300
21,200
22,100
23,500 J
24,200 J
23,400
21,900
Thallium
0.03 J
0.034 J
1.0 U
0.068 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
1.0 J
0.7 J
0.78 J
0.28 J
0.46 J
1.0 U
1.0 U
4.0 U
0.72 J
1.5
1.5
0.3 J
Zinc
2.8 J
4.5 J
5 J
3 JB
2.2 J
10.0 U
10.0 U
10.0 U
40.1
5.7
4.6
1.7 J
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
BRL
NS
Caprolactum
BRL
BRL
BRL
236
10
2-Methylnaphthalene
BRL
BRL
0.073 J
10
Phenanthrene
BRL
BRL
0.071 J
10
10
Di-n-butyl phthalate
BRL
1.4
4.1
BRL
190
10
Phenol
2.1
BRL
BRL
370
10
Bis (2-ethvlhexvl) phthalate
0.77
BRL
BRL
49
10
Pesticides / PCBs
NS
NS
NS
NS
BRL
NS
BRL
NS
Endrin aldehyde
BRL
0.009 J
BRL
BRL
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-59
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
500 U
50 U
45 J
85
50.0 U
56.5
84.9 J
1.4 J
1.3 J
2.4 UJ
21.3 UJ
200
Antimony
1.0 U
0.3 J
0.29 J
0.19 J
0.19 J
1.0 U
1.0 U
2.0 U
0.14 J
1.0 U
0.16 UJ
1.0 U
60
60
Arsenic
0.2 J
1.0 U
0.38 JB
0.38 J
0.2 J
1.0 U
1.0 U
1.0 U
0.14 J
0.16 J
0.21 J
0.17 J
10
10
Barium
42
46
66
56
41
48.2
46.7
75.7
64.9 J
61.8 J
61.1
73.2
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 J
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.2 U
0.2 U
0.044 J
0.2 U
0.2 U
0.2 U
0.024 J
0.032 J
0.25
0.2 U
5
5
Calcium
150,000
190,000
170,000
190,000
150,000
177,000
147,000
162,000
145,000 J
149,000
139,000
161,000
5,000
Chromium
0.2 J
0.2 J
1.0 U
1.0 U
0.26 J
1.0 U
1.0 U
1.0 U
0.24 J
0.51 J
0.33 J
0.29 UJ
11
10
Cobalt
0.2 J
0.2 J
0.4 J
0.15 J
0.14 J
1.0 U
1.0 U
1.0 U
0.35 J
0.46 J
0.36 J
0.43 J
50
Copper
2.0
1.6
1.6
2.0 B
1.7 B
1.1
2.4
1.4
1.3
3.1 J
1.8
1.4 UJ
25
25
Iron
41.0
9.5 UJ
7.4 J
37
20 U
41.4
10.0 U
90.3 J
100 U
100 U
100 U
47.5 J
5,000
100
Lead
1.0 U
0.089 J
1.0 U
1.0 U
1.8
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
4.2
3
Magnesium
21,000
29,000
25,000
31,000
23,000
27,800
21,300
23,600
22,100 J
24,800
23,300
26,200
5,000
Manaanese
1.8
0.72 J
0.31 J
0.92 J
0.58 J
9.1
1.0 U
72.3 J
0.42 J
0.68 J
0.49 J
2.1
15
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
2.4
2.5
1.8
1.8
1.6
2.3
2.0
5.1 J
2.7
3.5
3.6
3.1 UJ
96
40
Potassium
5,500
9,200
7,800
9,100
6.5 B
10,600
4,170
5,550
4,140 J
4,830
4,080
5,530
5,000
Selenium
1.0 J
1.0 UJ
2.0
1.0 U
1.0 JB
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
16,000
23,000
21,000
28,000
18,000 B
23,300
16,000
15,300
15,600 J
18,500 J
17,400
22,700
5,000
Thallium
0.031 J
0.043 J
1.0 U
0.19 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.13 J
0.11 J
1.0 U
0.14 J
0.12 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
1.0 U
1.0 U
50
Zinc
3.4 J
7.0 J
3.6 J
9.7 J
2.2 JB
10.0 U
10.0 U
10.0 U
3.5 J
5.5 J
2.4 J
1.5 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
810
500 U
50 U
110
110
134
406
50.0 U
782 J+
30.5 UJ
29.8
91.1 UJ
Antimony
1.0 U
0.3 J
0.3 J
0.23 J
0.2 J
1.0 U
1.0 U
2.0 U
0.21 J
1.0 U
0.21 UJ
1.0 U
Arsenic
0.94 J
1.0 U
0.3 J
0.3 J
0.21 J
1.0 U
1.0 U
1.0 U
0.90 J
1.0 U
0.32 J
0.23 J
Barium
54
44
66
55
42
47.1
48.6
82.1
66.4
63.2
71.0
75.0
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.077 J
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.2 U
0.2 U
0.2 U
0.051 J
0.2 U
0.2 U
0.2 U
0.047 J
0.2 U
0.05 J
0.2 U
Calcium
150,000
180,000
180,000
180,000
150,000
195,000
151,000
151,000
142,000 J+
148,000
148,000
166,000
Chromium
2.0
0.2 J
0.47 J
0.29 J
0.37 J
1.0 U
1.0 U
1.0 U
2.3
0.44 J
0.46 J
0.48 UJ
Cobalt
0.9 J
0.2 J
0.46 J
0.20 J
0.2 J
1.0 U
1.0 U
1.0 U
0.91 J
0.48 J
0.43 J
0.49 J
Copper
2.6
1.2
1.7
1.6 B
1.4 B
1.1
2.5
1.6
3.1
1.4 UJ
1.3
1.2
Cyanide
5.0 U
NS
2.2 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
4.8 J
5.0 U
5.0 U
10.0
10.0
Iron
1,900.0
100 UJ
120
120
68
211
707
78.4 J
2,110 J
78 J
70 J
203
Lead
1.2
0.09 J
0.11 J
0.13 J
0.16 J
1.0 U
1.0 u
1.3
1.6
1.0 U
1.0 U
0.22 J
Magnesium
26,000
27,000
26,000
29,000
23,000
29,600
22,200
22,100
20,800 J
24,100
24,600
26,700
Manaanese
89
2.9
5.3
5.0
9.4
7.7
25.3
104.0 J
68.6 J
6.2 UJ
5.7
13.1
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.200 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
3.6
1.9
6.3
1.7
1.8
2.30
2.6
5.1
4.0 J
3.3
3.2
3.5 UJ
Potassium
11,000
9,500
7,400
8,900 B
6,400 B
9,950
4,250
5,320
3,780
4,410
3,950
5,450
Selenium
1.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.45 J
1.0 U
1.0 U
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
30,000
22,000
21,000
28,000
18,000
21,700
16,000
13,900
13,800 J
17,800 J
17,100
22,700
Thallium
0.064 J
0.041 J
1.0 U
0.22 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
1.7
0.11 J
0.2 J
0.23 J
0.21 J
1.0 U
1.0 U
4.0 U
1.7 J
1.0 U
1.0 U
0.15 J
Zinc
9.7 J
3.2 J
4.0 J
6.1 JB
5.3 J
10.0 U
10.0 U
10.0 U
8.5
2.8 J
2.2 J
1.7 J
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
NS
Caprolactam
49
BRL
19
BRL
79.3
BRL
10
Di-n-butyl phthalate
BRL
BRL
2.0
BRL
190
10
bis (2-ethvlhexvl) phthalate
0.76
BRL
BRL
49
10
Pesticides / PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-61
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
500 U
69 J
63 J
120
50.0 UJ
54.6
50.0 UJ
1.8 J
1.5 J
3.6 UJ
18.1 UJ
200
Antimony
0.2 J
0.2 J
0.53 J
0.4 J
0.23 J
1.0 U
1.0 U
2.0 U
0.14 J
1.0 U
0.21 UJ
1.0 U
60
60
Arsenic
0.4 J
0.4 J
1.4
0.6 J
0.3 J
2.0 J
1.0 U
1.1
0.44 J
0.43 J
0.43 J
0.3 J
10
10
Barium
40
48
71
81
47
86.5
49.8
86.8
54.7 J
124 J
142
152
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.05 J
0.06 J
0.2 U
0.2 U
0.2 U
0.2 U
0.028 J
0.039 J
0.061 J
0.2 U
5
5
Calcium
180,000
240,000
250,000
240,000
180,000
218,000
192,000
203,000
181,000 J
180,000
160,000
128,000
5,000
Chromium
0.3 J
0.3 J
0.43 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.27 J
0.28 J
0.35 UJ
11
10
Cobalt
0.1 J
0.3 J
0.65 J
0.38 J
0.18 J
1.0 U
1.0 U
1.0 U
0.77 J
0.67 J
0.4 J
0.48 J
50
Copper
2.2
2.2
3.5
1.6 B
1.7 B
2.3 J
2.8
1.6
1.1
3.4 J
1.6
2.2 UJ
25
25
Iron
100
96 J
240 J
12 J
20 U
34.6 J
10.0 U
20.0 UJ
108
32 J
100 U
33 J
5,000
100
Lead
0.15 J
0.21 J
0.41 J
0.21 J
0.077 J
1.6 J
1.0 U
1.0 U
1.0 u
0.11 J
1.0 U
1.0 U
4.2
3
Magnesium
42,000
56,000
57,000
59,000
43,000
51,000
44,100
45,100
48,600 J
46,400
38,200
32,000
5,000
Manaanese
5.0
26 J
18 J
65
12
295 J
39.3
47.0 J
163 J
12.8
5.6
2.6
15
Mercury
0.2 U
0.2 U
0.2 J
0.2 U
0.20 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
2.7
4.8
6.8
6.6
3.3
7.0
3.8
4.5 J
4.9 J
4.5
3.5
3.4 UJ
96
40
Potassium
4,800
5,100
5,000
6,500
5,000 B
5,760
3,810
5,350
4,500 J
5,350
3,670
7,300
5,000
Selenium
0.9 J
1.0 UJ
1.9
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
0.02 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
15,000
25,000
28,000
37,000
20,000 B
36,800
21,500
21,300
43,300 J
22,600 J
17,900
16,700
5,000
Thallium
0.0 J
0.041 J
0.022 J
0.2 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.2 J
0.3 J
0.37 J
0.33 J
0.11 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
1.0 U
1.0 U
50
Zinc
2.6 J
3.4 J
7.0 J
5.0 J
4.2 JB
10.0 U
10.0 U
10.0 U
8.9 J
7.5 J
2.9 J
2.1 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
140
500 U
50 UJ
140 J
770
107 UJ
561 J
496
85.8 J+
111 UJ
131
40.8 UJ
Antimony
0.2 J
0.3 J
0.3 J
0.29 J
0.30 J
1.0 UJ
1.0 U
2.0 U
0.17 J
1.0 u
0.19 UJ
1.0 U
Arsenic
0.7 J
0.5 J
0.72 J
0.62 J
0.74 J
1.6
1.0 U
1.4
0.58 J
0.41 J
0.65 J
0.31 J
Barium
39
48
64
72
54
79.9
52.7
86.0
51.9
132
149
154
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.2 U
0.041 J
0.049 J
0.2 U
0.2 U
0.2 U
0.2 U
0.033 J
0.036 J
0.051 J
0.2 U
Calcium
170,000
230,000
260,000
240,000
180,000
247,000
198,000
190,000
170,000 J+
179,000
164,000
134,000
Chromium
0.6 J
0.3 J
0.8 J
0.3 J
1.5
1.0 U
1.0 U
1.0 U
0.34 J
0.49 J
0.64 J
0.44 UJ
Cobalt
0.2 J
0.3 J
0.6 J
0.49 J
0.48 J
1.0 U
1.0 U
1.0 U
0.73 J
0.73 J
0.51 J
0.48 J
Copper
2.0
1.6
2.3 J
1.7 B
2.8 B
4.6 J
2.1
2.4
1.4
1.9 UJ
1.8
1.7 J
Cyanide
5.0 U
NS
1.6 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
510.0
79 UJ
52 J
210 J
1,400
123 BJ
799
1,080 J
400 J
394
570
96.3 J
Lead
0.4 J
0.2 J
0.16 J
0.31 J
1.0
1.0 U
1.0 U
1.0 U
1.0 U
0.28 J
0.25 J
0.11 J
Magnesium
40,000
57,000
59,000
59,000
41,000
58,800
46,100
40,600
41,800 J
46,600
39,800
33,400
Manaanese
16
16 J
100 J
160
18
263 J
28.6
69.4 J
132 J
9.6 UJ
20.9
4.7
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
3.70
4.3
4.9
6.9
4.0
6.6
4.5
4.9
4.4
4.6
3.7
3.3 UJ
Potassium
4,900
5,200
5,000
6,300 B
5,500 B
5,900
4,150
5,180
4,290
5,120
4,170
7,500
Selenium
0.7 J
0.7 J
0.9 J
0.8 J
1.0 U
1.0 U
1.0 U
2.0 U
0.28 J
1.0 U
1.0 U
1.0 U
Silver
0.2 U
0.2 U
0.032 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
14,000
23,000
29,000
38,000
18,000
41,000
22,300
19,800
33,400 J
21,900 J
17,600
17,300
Thallium
0.039 J
0.040 J
1.0 U
0.28 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
0.4 J
0.2 J
1.0 U
0.28 J
1.4
1.0 U
1.0 U
4.0 U
1.0 UJ
0.27 J
0.22 J
1.0 U
Zinc
3.0 J
4.9 J
4 J
15 JB
5.4
10.0 U
10.0 U
10.0 U
4.1
4.7
4.0
1.5 J
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
NS
Bis(2-chloroethyl) ether
BRL
BRL
0.63
BRL
BRL
BRL
13.6
10
Phenanthrene
BRL
0.085 J
0.057 J
10
10
Caprolactam
9.8
139
BRL
10
Di-n-butyl phthalate
1.0
2.2
BRL
BRL
190
10
bis (2-ethvlhexvl) phthalate
0.61 J
0.76
22.1 J
BRL
BRL
49
10
Pesticides / PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-63
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorganics - Metals (DissolvedV4
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
500 U
50 U
48 J
110
50.0 U
81.5
152 J
10.0 U
1.7 J
8.4 J
5.3 UJ
200
Antimonv
0.8 J
0.7 J
0.81 J
0.42 J
0.68 J
1.0 UJ
1.0 U
2.0 U
0.48 J
0.65 J
0.47 J
0.55 J
60
60
Arsenic
1.0 U
0.3 J
0.56 JB
0.39 J
0.22 J
1.0 U
1.0 U
1.0 U
0.15 J
1.0 U
0.22 J
0.19 J
10
10
Barium
41
42
52
44
40
48.6 J
39.7
55.8
56.7 J
32.2 J
40.4
40.6 UJ
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.2 U
0.19 J
0.2 U
0.2 U
0.2 U
0.2 U
0.051 J
0.2 U
0.071 J
0.2 U
5
5
Calcium
170,000
200,000
190,000
240,000
190,000
192,000 J
202,000
203,000
190,000 J
141,000
167,000
169,000
5,000
Chromium
1.0 U
0.28 J
1.0 U
0.2 J
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.28 J
0.28 J
0.22 J
11
10
Cobalt
1.0 U
0.3 J
0.31 J
0.093 J
1.0 U
1.0 UJ
1.0 U
1.0 U
0.23 J
0.3 J
0.26 J
0.3 J
50
Copper
2.0
1.6
2.1
1.5 B
0.9 JB
1.4
1.0 UJ
1.5
1.2
3.4 J
1.2
1.4 UJ
25
25
Iron
9.8 J
140
27
16 J
43
50.3 J
131
189 J
100 U
100 U
100 U
100 U
5,000
100
Lead
1.0 U
0.1 J
1.0 U
1.0 U
0.10 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
4.2
3
Magnesium
46,000
52,000
45,000 J
59,000
50,000
45,200
49,900
49,700
50,100 J
36,700
41,800
41,000
5,000
Manganese
4.1
68
35
24
6
183 J
13.2
16.7 J
6.8 J
0.59 J
3.1
4.1 UJ
15
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
1.8
2.4
1.7
1.5
1.0
3.5
1.6
1.5 J
2.2 J
2.0
2.6
2.0
96
40
Potassium
2,700
4,000
4,500
4,800 J
3,000 B
4,180
3,570
4,750
3,320 J
2,540
2,780
2,790
5,000
Selenium
1.0 U
1.0 UJ
0.64 J
1.0 U
1.0 UJ
1.3
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
11,000
19,000
16,000
26,000
12,000 B
19,400
13,800
16,400
11,600 J
7,150 J
10,500
10,800
5,000
Thallium
1.0 U
0.024 J
0.05 J
0.067 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.2 J
0.3 J
0.18 J
0.16 J
0.18 JB
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
1.0 U
1.0 U
50
Zinc
3.7 J
3.4 J
5.0 J
5.2 J
2.1 JB
10 UJ
10 U
10 U
6.5 J
5.6 J
1.6 J
2.2 J
86
20
Tnoroanics - Metals and Cvanide fTotan
Aluminum
59
250 U
530 J
1,900
500 J
395
555 J+
516 J
972 J+
612 UJ
178
54.4 UJ
Antimonv
0.7 J
0.8 J
0.9 J
0.47 J
0.72 J
1.0 UJ
1.0 U
2.0 U
0.57 J
0.68 J
0.62 J
0.58 J
Arsenic
0.17 J
0.36 J
0.49 J
0.6 J
0.4 J
1.0 U
1.0 u
1.0 U
0.53 J
0.32 J
0.31 J
0.21 J
Barium
41
41
55
51
43
45.8 J
42
57.8
54.5
35.4
42.0
41.3 UJ
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.085 J
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.2 U
0.06 J
0.200 U
0.2 U
0.2 U
0.2 U
0.2 U
0.067 J
0.058 J
0.69
0.2 U
Calcium
170,000
200,000
200,000
230,000
180,000
232,000 J
199,000 J+
194,000
181,000 J+
145,000
172,000
172,000
Chromium
0.21 J
0.39 J
0.76 J
0.66 J
0.61 J
1.0 U
1.0 U
1.0 U
1.5 J
0.96 J
0.52 J
0.32 UJ
Cobalt
0.1 J
0.3 J
0.67 J
0.53 J
0.29 J
1.0 U
1.0 U
1.0 U
0.80 J
0.67 J
0.34 J
0.33 J
Copper
1.1
1.3
2.1
2.7 B
1.6 B
1.3
1.5
1.9
3.1
2.2 UJ
2.7
1.2
Cyanide
5.0 U
NS
1.7 UJ
5.0 U
5.0 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
180
330
860
3,000
580 J
461
704
829 J
1,040 J
1,170
359
79.4 J
Lead
0.2 J
0.2 J
0.75 J
0.45 J
0.56 J
1.0 U
1.0 U
1.0 U
1.3
0.95 J
0.4 J
0.16 J
Magnesium
45,000
51,000
47,000
61,000
48,000
56,600
49,700
45,500
46,200 J
37,500
42,900
41,000
Manganese
8.7
30
72
200
39
161 J
51.9
73.0
52.1 J
64.5 UJ
33.9
20.3
Mercury
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
0.96 J
2.1
1.3
2.6
1.5
3.2 J
2.3
2.1
3.5
2.6
2.9
2.0 UJ
Potassium
2,600
3,900
4,700
5,800 B
3,100 B
5,030
3,690
4,700
3,240
2,790
3,320
3,070
Selenium
1.0 U
0.9 J
1.0 U
1.2
0.8 JB
1.0 U
1.0 U
2.0 U
1.0 U
1.0 U
1.0 U
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
11,000
18,000
15,000
26,000
10,000
22,100
13,500
15,800
11,100 J
7,000 J
10,200
11,100
Thallium
1.0 U
0.041 J
0.052 J
0.098 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
0.3 J
0.5 J
0.97 J
0.83 J
0.88 J
1.0 U
1.0 U
4.0 U
2.1 J
1.1
0.35 J
0.16 J
Zinc
10 U
7.0 J
6.3 J
8.1 JB
4.8 J
10 U
10 U
10 U
8.5
4.8
2.9 J
2.0 J
Volatile Organic Cnmnnnnds fVOCs^
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Semi-Volatile Oroanir Cnmnnnnds fSVOCsl
BRL
NS
BRL
NS
BRL
NS
BRL
NS
NS
BRL
NS
Anthracene
0.060 J
10
Fluorene
0.068 J
10
2-Methylnaphthalene
0.055 J
10
Naphthalene
0.055 J
44
10
Phenanthrene
0.079 J
10
10
Caprolactam
29 J
BRL
10
Di-n-butyl phthalate
3.2 J
5.1
BRL
190
10
bis (2-ethylhexyl) phthalate
0.60
1.3 J
2.5
BRL
49
10
Pesticides /PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C \Users\mwatkins\bcpw\d2838397\Appendix C-DataTables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Groundwater Analysis Summary Table for GW-65
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Jan-18
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inoreanics - Metals fDissolvedV4
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Resample
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50.0 U
250 U
67
190
95
2,990
50.0 U
50.0 U
79.7 J
1.6 J
2.0 J
436
158 J
200
Antimony
0.5 J
0.5 J
0.24 J
0.35 J
0.34 J
1.0 U
1.0 U
1.0 U
2.0 U
0.11 J
1.0 U
1.0 U
1.0 U
60
60
Arsenic
0.4 J
0.2 J
1.0 U
0.31 J
0.16 J
5.1
1.0 U
1.0 U
1.0 U
1.0 U
0.2 J
0.56 J
0.36 J
10
10
Barium
28
33
20
33
28
72.3
41
31.6
40.1
29.7 J
28.7 J
32.8
36.7 UJ
1,000
200
Beiyllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.025 J
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.033 J
0.2 U
5
5
Calcium
110,000
150,000
98,000
160,000
120,000
124,000
120,000
105,000
125,000
109,000 J
104,000
105,000
112,000
5,000
Chromium
0.3 J
0.4 J
0.22 J
0.5 J
0.24 J
18.0*
1.0 U
1.0 U
1.0 U
2.0 U
0.25 J
1.0 J
0.62 UJ
11
10
Cobalt
1.0 U
0.1 J
0.19 J
0.15 J
1.0 U
8.6
1.0 U
1.0 U
1.0 U
0.12 J
1.0 U
0.51 J
0.3 J
50
Copper
1.2
1.3
2.4
1.7 B
1.0 JB
12.4
2.1
1.5
1.9
2.4
2.9 UJ
2.2
2.0 UJ
25
25
Iron
10 U
81
170
350
6.9 J
3,300
59.4
10.0 U
59.3 J
100 U
100 U
1320
479 J
5,000
100
Lead
1.0 U
0.12 J
0.13 J
0.93 J
1.0 U
8.5*
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.59 J
0.3 J
4.2
3
Magnesium
42,000
73,000
33,000
79,000
44,000
60,900
45,900
34,800
41,400
33,200 J
34,400
31,900
25,900
5,000
Manganese
0.6 J
2.5
7.2
6
0.21 J
371
1.0 U
1.0 U
2.0 UJ
0.26 J
0.48 J
22.7
10.4 J
15
Mercuiy
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
1.2
1.3
0.95 J
1.4
0.59 J
18.6
1.4
1.0 U
1.0 UJ
1.1 J
1.3
1.8
1.4 UJ
96
40
Potassium
1,600
2,400
1,900
3,200
1,700 B
3,600
1,940
1,580
2,060
1,300 J
1,380
1,670
1,220 UJ
5,000
Selenium
1.0 U
1.1 J
1.0 U
1.0 U
0.96 JB
1.2
1.0 U
1.0 U
2.0 U
1.0 U
0.46 J
0.49 J
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.22
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
21,000
21,000
19,000
25,000
20,000 B
18,800
17,800
17,000
14,700
15,900 J
13,600 J
10,800
8,820
5,000
Thallium
1.0 U
0.028 J
1.0 U
0.048 J
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.1 J
0.2 J
0.16 J
0.33 J
0.08 JB
19.5
1.0 U
1.0 U
4.0 U
1.0 U
1.0 U
0.71 J
0.36 J
50
Zinc
2.1 J
3.6 J
3.9 J
3.5 J
10.0 U
48.3
10.0 U
10.0 U
10.0 U
5.4 J
5.7 J
3.6
3.6 J
86
20
rnnroanirs - Metals and Cvanide ITntal)
Aluminum
1,300.0
2,500
680
8,300
1,800
10,700
887
725
227
311 J+
381 UJ
37.8
75.4 UJ
Antimony
0.61 J
0.51 J
0.17 J
0.19 J
0.18 J
1.0 U
1.0 U
1.0 U
2.0 U
0.11 J
1.0 U
0.11 UJ
1.0 U
Arsenic
1.0 J
1.6
0.74 J
4.0
1.4
5.6
1.0 U
1.0 u
1.0 U
0.2 J
0.29 J
0.23 J
0.26 J
Barium
33
40
22
56
37
73.7
37.5
30.2
41.9
32.4
30.1
29.2
35.4 UJ
Beryllium
1.0 U
1.0 U
1.0 U
0.3 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.049 J
0.042 J
0.099 J
0.071 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.024 J
0.2 U
Calcium
110,000
150,000
90,000
170,000
110,000
165,000
123,000
107,000
124,000
114,000 J+
106,000
105,000
114,000
Chromium
2.4
5.2
1.3
12
3.6
20.2
1.5
1.2
1.0 U
0.51 J
0.86 J
0.41 J
0.5 UJ
Cobalt
0.9 J
2.1
0.53 J
6.4
1.1
9.3
1.0 U
1.0 U
1.0 U
0.27 J
0.46 J
0.14 J
0.2 J
Copper
2.5
3.7
2.4
17 B
5.4 J
13.5
1.8
3.7
1.7
1.1
1.4
1.3
1.0 J
Cvanide
5.0 U
NS
1.86 UJ
5.0 U
5.0 U
5.0 U
NS
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
2,300.0
5,300
1,300
16,000
3,300
22,000
1,320
1,090
424 J
343 J
737
75.5 J
284 J
Lead
1.4
2.6
0.71 J
5.9
2.3
8.8
1.0 U
1.0 U
1.0 U
0.17 J
0.3 J
1.0 U
0.1 J
Magnesium
40,000
77,000
29,000
83,000
37,000
65,300
49,500
36,600
38,700
34,400 J
34,700
29,400
26,000
Manganese
47
94
23
260
65
362
25.6
21.9
8.6 J
6.1 J
13.8 UJ
2.1
4.6 J
Mercuiy
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
2.50
5.1
1.4
13
3.3
20.3
1.7
1.6
1.1
1.3
1.9
1.2
1.4 UJ
Potassium
2,100
3,500
2,000
6,000 B
2,100 B
6,170
2,360
1,870
2,220
1,320
1,530
1,490
1,100 UJ
Selenium
0.62 J
0.72 J
1.0 U
0.78 J
0.64 JB
1.1 UJ
1.0 U
1.0 U
2.0 U
0.27 J
0.62 J
0.34 J
0.34 J
Silver
0.2 U
0.2 U
0.2 U
0.022 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
Sodium
20,000
21,000
17,000
25,000
21,000
19,400
17,900
16,800
14,600
14,900 J
13,500 J
10,100
8,830
Thallium
0.04 J
0.05 J
1.0 U
0.19 J
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
2.2
4.5
1.0
13
3.3
21.4
1.4
1.3
4.0 U
0.46 J
0.66 J
1.0 U
0.2 J
Zinc
6.7 J
13.0
4.2 J
36 B
14
53.6
10.0 U
10.0 U
10.0 U
2.1 J
3.1
0.98 J
1.8 J
Volatile Oreanic Comnounds (VOCs^
BRL
NS
BRL
NS
BRL
NS
NS
BRL
NS
NS
BRL
NS
1,2,4-Trichlorobenzene
1,4-Dichlorobenzene
1.2
0.33 J
75
10.0
Semi-Volatile Oreanic Comnounds (SVOCsl
NS
NS
NS
NS
NS
BRL
NS
BRL
NS
Bis (2-ethylhexyl) phthalate
BRL
BRL
1.1
BRL
49
10
Caprolactam
14
10
Di-n-butvl phthalate
6.8
5.5
190
10
Pesticides /PCBs
BRL
NS
BRL
NS
BRL
NS
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratoiy data qualifiers
U = Indicates compound was analyzed for but not detected. Hie associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = Hie sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS =No sampling required forthat event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C \Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Surface Water Analysis Summary Table for SW-50
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
250 U
50 U
50 UJ
46 J
50.0 U
50.0 U
50.0 UJ
7.3 J
1.9 J
29.9
20.1 UJ
200
Antimony
1.0 U
0.3 J
0.15 J
1.0 UJ
1.0 U
1.0 U
1.0 U
2.0 U
0.17 J
1.0 U
0.17 UJ
1.0 U
60
60
Arsenic
0.85 J
0.95 J
0.90 JB
0.79 J
0.50 J
1.0 U
1.0 U
1.2
0.39 J
0.41 J
0.5 J
0.42 J
10
10
Barium
37
42
42
50
31
46.9
64.2
48.2
40.3 J
39.7 J
36.7
35.8 UJ
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Cadmium
0.2 U
0.1 J
0.20 U
0.2 U
0.20 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
5
5
Calcium
85,000
72,000
85,000
110,000
79,000
65,100
121,000
90,000
92,600 J
91,100 J+
81,000 J
75,600
5,000
Chromium
1.0 U
1.0 U
1.0 U
0.4 J
0.9 J
1.0 U
1.0 U
1.0 U
2.0 U
0.22 J
0.39 J
0.25 UJ
11
10
Cobalt
1.0 U
0.07 J
0.14 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.15 J
0.2 J
0.11 J
0.13 J
50
Copper
1.2
1.8
2.2
1.3 JB
4.9 B
2.1 J
1.0
1.3
1.1
1.7 J
1.4
1.2 UJ
25
25
Iron
29
20 U
24
12 J
20 U
10.0 UJ
23.9
20.0 UJ
100 U
100 U
54.6 J
100 U
5,000
100
Lead
1.0 U
0.1 J
1.0 U
1.0 UJ
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
4.2
3
Magnesium
26,000
21,000
23,000
32,000
24,000
19,600
35,200
26,000
28,200 J
25,900
21,200
22,800
5,000
Manaanese
9.8
22
3.2
3.5
7.8
48.2 J
9.5
2.4 J
18.5 J
5.7
5.3
10.1
15
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
0.8 J
0.7 J
1.8
0.81 J
0.58 J
1.0 U
1.0 U
1.0 UJ
1.0 J
1.4
0.9
0.94 UJ
96
40
Potassium
2,000
3,200 J
3,200
3,700
1,600 B
3,040
2,560
3,440
1,780 J
1,560
1,700
1,820 UJ
5,000
Selenium
1.0 U
0.8 J
1.0 U
1.0 U
0.58 JB
1.0 U
1.0 U
2.0 U
0.21 J
1.0 U
0.5 J
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
0.5 U
0.5 U
10
10
Sodium
51,000
44,000
48,000
170,000
38,000 B
35,800
308,000 J-
49,100
49,000 J
45,100 J
66,000
49,100
5,000
Thallium
0.0 J
0.032 J
1.0 U
0.11 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
40
10
Vanadium
0.5 J
0.5 J
0.52 J
0.53 J
0.43 JB
1.0 U
1.0 U
4.0 U
0.26 J
0.23 J
0.36 J
0.25 J
50
Zinc
10 U
2.0 J
2.1 J
2.3 J
10 U
10.0 U
10.0 U
10.0 U
1.1 J
2.2 J
1.3 J
1.4 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
50 U
250 U
50 U
39 J
100
85.7 UJ
53.5
50 U
1970 J
27.6 J
146
21.3 UJ
Antimony
0.30 J
0.21 J
0.15 J
1 UJ
1.0 U
1.0 U
1.0 U
2.0 U
0.16 J
1.0 U
0.17 UJ
1.0 U
Arsenic
0.6 J
0.9 J
1.3
0.87 J
0.57 J
1.0 UJ
1.0 U
1.2
0.84 J
0.43 J
0.62 J
0.43 J
Barium
38
43
43
49
34
41.6
71.3
48.2
55.2
41.4
37.8
36.3 UJ
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.17 J
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Calcium
83,000
73,000
82,000
110,000
81,000
77,300
118,000
88,800
99,200 J
90,100 J+
79,200 J
66,600
Chromium
0.2 J
0.3 J
0.25 J
0.2 J
0.34 J
1.0 u
1.0 U
1.0 U
3.3
0.24 J
0.59 J
0.33 UJ
Cobalt
1.0 U
0.1 J
0.16 J
1.00 U
1.0 U
1.0 u
1.0 U
1.0 U
1.5
0.2 J
0.17 J
0.14 J
Copper
1.1
1.9
2.2
3.0 JB
1.3 B
2.0
2.9
1.3
3.1
1.3
1.6
1.2
Cyanide
5.0 U
NS
1.69 UJ
5.0 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
110
67 UJ
57
46 J
76
52.8 UJ
26.6
30 J
3,180 J
45.9 J
246
100 U
Lead
0.07 J
0.16 J
1.0 U
0.093 J
0.1 J
1.0 U
1.0 U
1.0 U
1.3
1.0 U
1.0 U
1.0 U
Magnesium
26,000
22,000
22,000 J
34,000
26,000
21,200
34,600
24,900
28,000 J
25,200
21,000
19,600 J
Manaanese
12.0
27
4.3
4.4 J
9.7
41.8 J
5.5 J
4.0 J
78.1 J
7.5
8.4
11.1
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
0.60 J
0.9 J
0.6 J
0.77 J
0.53 J
1.00 U
1.00 U
1.0 U
3.9
1.2
1.0
1.0 UJ
Potassium
2000
3,300
2,900
3,700 B
1,700 B
3,290
2,590
3,380
2,720
1,500
1,860
1,580 UJ
Selenium
1.0 U
1.0 UJ
1.1
1.0 U
0.82 JB
1.0 U
1.0 U
2.0 U
0.34 J
0.34 J
0.47 J
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.12 J
0.5 U
0.5 U
0.5 U
Sodium
50,000
45,000
45,000
170,000
40,000
38,600
301,000 J+
46,200
44,400 J
44,200 J
62,200 J
42,200
Thallium
0.044 J
0.041 J
1.0 U
0.16 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
0.6 J
0.6 J
0.73 J
0.49 J
0.55 J
1.0 U
1.0 U
4.0 U
5.0 J
0.27 J
0.58 J
0.24 J
Zinc
10.0 U
3.0 J
10 U
3 JB
2.6 J
10.0 U
10.0 U
10.0 U
8.3
1.9 J
2.0 J
1.3 J
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
NS
NS
Acetcne
5.2 J
BRL
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
NS
Bis (2-ethylhexyl) phthalate
BRL
BRL
0.7
BRL
BRL
BRL
49
10
Phenanthrene
BRL
0.076 J
0.051 J
10
10
Di-n-butyl phthalate
2.3
BRL
BRL
190
10
Pesticides / PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Surface Water Analysis Summary Table for SW-52
Sampling Results
Compound
Mar-16
Jun-16
Sep-16
Dec-16
Mar-17
Sep-17
Mar-18
Oct-18
Mar-19
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorsanics - Metals (Dissolved)14
Semi-Annual
Quarterly
Semi-Annual
Quarterly
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Semi-Annual
Annual
Annual
Annual
Aluminum
50 U
250 U
50 U
38 J
46 J
50.0 U
53.0
50.0 UJ
4.4 J
19.4 J
NS
6.2 UJ
200
Antimony
0.5 J
0.3 J
0.18 J
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.13 J
1.0 U
NS
1.0 U
60
60
Arsenic
0.6 J
1.4
1.8 B
0.84 J
0.53 J
1.0 U
1.0 U
1.2
0.33 J
0.4 J
NS
0.38 J
10
10
Barium
39.0
42.0
44
50
37
43.3
65.2
48.7
47.1 J
40.0 J
NS
37 UJ
1,000
200
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.2 U
0.2 U
NS
0.2 U
5
5
Cadmium
0.2 U
0.2 U
0.2 U
0.062 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
NS
0.2 U
5
5
Calcium
85,000
77,000
83,000
110,000
81,000
71,700
120,000
88,600
97,400 J
93,700 J+
NS
75,900
5,000
Chromium
1.0 U
0.3 J
0.86 J
1.0 U
0.20 J
1.0 U
1.0 U
1.0 U
0.28 J
0.31 J
NS
0.31 UJ
11
10
Cobalt
1.0 U
0.15 J
0.17 J
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.17 J
0.22 J
NS
0.14 J
50
Copper
1.6
2.5 J
2.6
2.0 B
1.6 B
1.3
1.0 U
1.5
1.5
3.1 J
NS
1.2 UJ
25
25
Iron
32
130
12 J
24
20 U
10.0 U
22.7
20.0 UJ
100 U
100 U
NS
100 U
5,000
100
Lead
1.0 U
0.2 J
1.0 U
0.16 J
0.073 J
1.0 UJ
1.0 U
1.0 U
1.0 U
1.0 U
NS
1.0 U
4.2
3
Magnesium
26,000
23,000
23,000
33,000
24,000
19,600
34,400
26,000
28,900 J
26,500
NS
22,500
5,000
Manaanese
17
36
12
9
11
9.5
13.3
5.7 J
10.8 J
7.5
NS
21.5
15
Mercury
0.1 J
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
NS
0.2 U
0.2
0.2
Nickel
0.6
1.9 J
1.1
1.3
0.7 J
1.0
1.0 U
1.7 J
1.1 J
1.3
NS
1.0 UJ
96
40
Potassium
1,900
3,500
3,000
3,700
1,500 B
3,220
2,510
3,160
1,860 J
1,710
NS
1,660 UJ
5,000
Selenium
1.0 U
1.0 UJ
1.1
1.0 U
1.0 JB
1.0 U
1.0 U
2.0 U
0.31 J
0.29 J
NS
1.0 U
8.5
5
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.5 U
0.5 U
NS
0.5 U
10
10
Sodium
50,000
59,000
48,000
170,000
37,000 B
37,800
321,000
50,400
46,700 J
42,700 J
NS
48,900
5,000
Thallium
0.029 J
0.034 J
1.0 U
0.11 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
NS
1.0 U
40
10
Vanadium
0.4 J
0.9 J
0.63 J
0.43 J
0.46 JB
1.0 U
1.0 U
4.0 U
0.2 J
0.42 J
NS
0.21 J
50
Zinc
10.0 U
5.2 J
2.1 J
4.0 J
2.3 JB
11.6
10.0 U
10.0 U
2.4 J
3.4 J
NS
1.4 J
86
20
Inorsanics - Metals and Cvanide (Total)
Aluminum
50 U
140 J
50 U
64
150
61.3 UJ
78.9
50 U
3890 J+
243 J
68.4
13.2 UJ
Antimony
0.62 J
0.20 J
0.15 J
1.0 U
1.0 U
1.0 U
1.0 U
2.0 U
0.2 J
1.0 U
0.15 UJ
1.0 U
Arsenic
0.5 J
1.6
1.4
0.89 J
0.65 J
1.0 U
1.0 U
1.1
1.6
0.5 J
0.58 J
0.39 J
Barium
40
43
47
51
39
43.9
69.8
47.7
56.2
42.4
42.2
37.0 UJ
Beryllium
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
1.0 U
0.3
0.2 U
0.2 U
0.2 U
Cadmium
0.2 U
0.2 U
0.2 U
0.071 J
0.2 U
0.2 U
0.2 U
0.2 U
0.032 J
0.03 J
0.2 U
0.2 U
Calcium
85,000
73,000
86,000
120,000
85,000
76,700
121,000
88,300
103,000 J
92,700 J+
86,000
70,500
Chromium
1.0 U
0.5 J
0.29 J
0.21 J
0.26 J
1.0 U
1.0 U
1.0 U
5.9
0.51 J
0.39 J
0.42 UJ
Cobalt
1.0 U
0.3 J
0.17 J
1.0 U
0.06 J
1.0 U
1.0 U
1.0 U
2.8
0.36 J
0.15 J
0.14 J
Copper
1.1
1.6
2.3
5.5 J
1.3 B
1.4
1.0 U
1.1
5.0
1.5
1.4
1.3
Cyanide
1.2 J
NS
2.37 UJ
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
100
450 J
68
91
110
69.7 UJ
77
72 J
6,920 J
382
97.8 J
30.7 J
Lead
0.1 J
0.4 J
1.0 U
0.17 J
0.12 J
1.0 U
1.0 U
1.0 U
2.8
0.25 J
1.0 U
1.0 U
Magnesium
26,000
22,000
24,000
34,000
25,000
20,500
35,300
24,900
28,500 J
25,800
23,800
20,900
Manaanese
19
49 J
15
11
14
9.6
13.9
6.8 J
144 J
20.4
10.3
21.2
Mercury
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
Nickel
0.64 J
1.3
0.6 J
0.88 J
0.6 J
1.0 U
1.0 U
1.0 U
6.5
1.9
1.0
1.0 UJ
Potassium
1900
3,400
3,000
3,800 B
1,500 B
3,220
2,580
3,170
3,730
1,710
1,880
1,540 UJ
Selenium
1.0 U
1.0 UJ
0.68 J
1.0 U
0.84 JB
1.0 U
1.0 U
2.0 U
0.57 J
0.43 J
0.47 J
1.0 U
Silver
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.2 U
0.1 J
0.5 U
0.5 U
0.5 U
Sodium
50,000
57,000
49,000
180,000
39,000
39,600
340,000
48,000
40,200 J
41,400 J
64,200
45,700
Thallium
0.034 J
0.035 J
1.0 U
0.14 J
1.0 U
1.0 U
1.0 U
0.2 U
1.0 U
1.0 U
1.0 U
1.0 U
Vanadium
0.5 J
1.3
0.80 J
0.54 J
0.61 J
1.0 U
1.0 U
4.0 U
8.7 J
0.68 J
0.42 J
0.2 J
Zinc
10.0 U
6.6
10 U
5.2 JB
10 U
11.6
10.0 U
10.0 U
16.7
2.6 J
1.5 J
1.7 J
Volatile Orsanic ComDounds (VOCst
BRL
NS
BRL
NS
BRL
NS
BRL
NS
NS
BRL
NS
1,2,4-Trichlorobenzene
0.43 J
Semi-Volatile Orsanic ComDounds (SVOCst
NS
NS
NS
NS
NS
BRL
NS
Phenanthrene
BRL
BRL
BRL
BRL
0.11 J
10
10
Di-n-butyl phthalate
1.7
BRL
190
10
Bis (2-ethvlhexvl) phthalate
0.7 J
BRL
BRL
49
10
Pesticides / PCBs
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - =No Sample Available (Well Dry or Insufficient Volume)
5) NS =No sampling required for that event. In the case of the March 2021 annual event, the dissolved metals sample was not taken.
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Skinner Landfill
West Chester, Ohio
Seep Analysis Summary Table for S-01
Sampling Results
Compound
Mar-20
Mar-21
Mar-22
TRIGGER
LEVEL
CRQL
Inorganics - Metals (Dissolved)14
Annual
Annual
Annual
Aluminum
1.7 J
4.3 J
22.4 UJ
200
Antimony
0.3 J
0.52 J
0.44 J
60
60
Arsenic
0.19 J
0.52 J
0.25 J
10
10
Barium
52.9 J
51.4
36.3 UJ
1,000
200
Beryllium
0.2 U
0.02 U
0.20 U
5
5
Cadmium
0.033 J
0.02 U
0.20 U
5
5
Calcium
143,000 J+
132,000
127,000
5,000
Chromium
2.0 U
0.37 J
0.30 UJ
11
10
Cobalt
0.57 J
0.83 J
0.50 J
50
Copper
3.0 J
1.6
1.6 UJ
25
25
Iron
100 U
34.3 J
100 U
5,000
100
Lead
1.0 U
0.03 U
1.0 U
4.2
3
Magnesium
37,300
35,400
30,700
5,000
Manganese
482
218
601
15
Mercury
0.2 U
0.2 U
0.2 U
0.2
0.2
Nickel
3.6
5.2
3.5 UJ
96
40
Potassium
7,320
13,900
7,000
5,000
Selenium
1.0 U
0.4 U
1.0 U
8.5
5
Silver
0.5 U
0.02 U
0.50 U
10
10
Sodium
17,000 J
27,900
16,400
5,000
Thallium
1.0 U
0.03 U
1.0 U
40
10
Vanadium
1.0 U
0.2 U
1.0 U
50
Zinc
3.3 J
1.4 U
1.3 J
86
20
Inorganics - Metals and Cvanide (Total)
Aluminum
1,460 J
13.3
145
Antimony
0.33 J
0.5 J
0.42 J
Arsenic
0.66 J
0.6 J
0.31 J
Barium
62.5
50.4
36.5 UJ
Beryllium
0.11 J
0.04 U
0.20 U
Cadmium
0.054 J
0.02 U
0.20 U
Calcium
148,000 J+
133,000
123,000
Chromium
2.5
0.41 J
0.52 UJ
Cobalt
2.3
0.8 J
0.59 J
Copper
2.9
1.1
1.4
Cyanide
5.0 U
5.0 U
5.0 U
10.0
10.0
Iron
3,660
26.9 J
264
Lead
1.3
0.2 U
0.1 J
Magnesium
37,800
35,600
29,400
Manganese
838
216
603
Mercury
0.2 U
0.2 U
0.2 U
Nickel
6.6
4.7
3.6 UJ
Potassium
7,560
14,500
6,660
Selenium
1.0 U
0.3 U
1.0 U
Silver
0.5 U
0.04 U
0.50 U
Sodium
16,200 J
26,600
15,500
Thallium
1.0 U
0.1 U
1.0 U
Vanadium
3.1
0.2 U
0.29 J
Zinc
7.0
1.4 J
1.7 J
Volatile Organic ComDounds (VOCs)
NS
BRL
NS
1,2,4-Trichlorobenzene
Semi-Volatile Organic ComDounds (SVOCs)
NS
BRL
NS
Phenanthrene
10
10
Di-n-butyl phthalate
190
10
Bis (2-ethylhexyl) phthalate
49
10
Pesticides / PCBs
NS
BRL
NS
Notes:
1) All results expressed in micrograms per liter (ng/L)
2) Acronyms
BRL = Below Reporting Limit
CRQL = Contract Required Quantitation Limit
3) Laboratory data qualifiers
U = Indicates compound was analyzed for but not detected. The associated value is the Reporting Limit (RL)
B = (Inorganics) Indicates the result is between the RL and Method Detection Limit (MDL) but below the CRQL
B = (Organics) Indicates the analyte was detected in the Method Blank
J = The analyte was positively identified at a value less than the RL but greater than the MDL, or otherwise estimated
UJ = Indicates analyte was analyzed for but not detected. The corresponding RL is estimated
R = The sample results are rejected due to deficiencies in the ability to analyze the sample and meet quality control criteria
4) - = No Sample Available (Well Dry or Insufficient Volume)
5) NS = No sampling required for that event
6) * = Result not confirmed by addiitonal sampling and deemed anomalous
7) Samples analyzed for dissolved inorganics were field filtered through a 0.45 micron filter
8) Results in BOLD font indicate a detection above the CRQL. An analyte is bolded only if there is a corresponding Trigger Level.
9) Results yellow shaded red BOLD font, indicate a detection above the corresponding Trigger Level.
C:\Users\mwatkins\bcpw\d2838397\Appendix C-Data Tables-8-12-22
-------
Attachment 12
Statistical Analysis Output
(2016-2022)
-------
-------
GW-7R Mann-Kendall Trend Test
1.5
1.0 ¦
(0
o
Q.
C
a)
(0
0.5 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
Confidence Coefficient
Level of Significance
Standard Deviation of S
Standardized Value of S
M-K Test Value (S)
Tabulated p-value
Approximate p-value
11
0.9500
0.0500
12.8062
0.5466
8
0.2710
0.2923
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0001
Theil-Sen Intercept -2.5185
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-7R Mann-Kendall Trend Test
100
(0
o
Q.
E
3
'E
(0
m
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
-1.0899
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.1379
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0032
Theil-Sen Intercept 199.3824
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
20-
0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
GW-7R Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
3
a)
m
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-7R Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
3
E
T3
(0
o
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.1792
Standardized Value of S
-0.6569
M-K Test Value (S)
-9
Tabulated p-value
0.2710
Approximate p-value
0.2556
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0320
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
-------
GW-7R Mann-Kendall Trend Test
127 ¦
102 ¦
(0
O
9- 77-
C
o
52-
27-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
11.6905
Standardized Value of S
-0.7699
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.2207
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 5.0000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
(0
o
Q.
3
O
a)
0.01
GW-7R Mann-Kendall Trend Test
0.10
0.09-
0.08-
0.07-
0.06-
0.05-
0.04-
0.03-
0.02-
0.00.
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
Confidence Coefficient
Level of Significance
Standard Deviation of S
Standardized Value of S
M-K Test Value (S)
Tabulated p-value
Approximate p-value
11
0.9500
0.0500
0.0000
0
0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-7R Mann-Kendall Trend Test
5.0
4.0 ¦
3.0 ¦
(0
o
Q.
"53
o
2.0 ¦
1.0 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
2.2645
M-K Test Value (S)
30
Tabulated p-value
0.0080
Approximate p-value
0.0118
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0008
Theil-Sen Intercept -32.9827
Statistically significant evidence
of an increasing trend at the
specified level of significance.
-------
-------
GW-7R Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
a)
>
c7)
0.20-
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-7R Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
D
15
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-7R Mann-Kendall Trend Test
10
(0
o
Q.
6
c
N
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.6623
Standardized Value of S
0.0000
M-K Test Value (S)
-1
Tabulated p-value
0.5000
Approximate p-value
0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 4.9000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
0.50
0.40'
0.30'
(0
o
Q.
>
c
o
E
c
<
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
1.5
1.3 ¦
1.0 ¦
(0
o
Q.
C
a)
(0
0.8
0.5 ¦
0.3 ¦
0.0
GW-24 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.7671
Standardized Value of S -1.2532
M-K Test Value (S)
Tabulated p-value
Approximate p-value
-17
0.1090
0.1051
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0003
Theil-Sen Intercept 15.3600
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
100
75-
(0
o
Q.
E
3
'E
(0
m
50-
25-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
0.7785
M-K Test Value (S)
11
Tabulated p-value
0.2230
Approximate p-value
0.2181
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0102
Theil-Sen Intercept -374.5342
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
a)
m
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
3
E
T3
(0
o
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.3246
Standardized Value of S
-0.4743
M-K Test Value (S)
-4
Tabulated p-value
0.3810
Approximate p-value
0.3176
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
1.5
1.3 ¦
1.0 ¦
(0
o
Q.
E
3
E
o
.c
O
0.8
0.5 ¦
0.3 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 9.9833
Standardized Value of S 0.2003
M-K Test Value (S) 3
Tabulated p-value 0.4400
Approximate p-value 0.4206
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
16
14-
12-
10-
(0
O
Q.
i_
a)
o.
Q.
o
o
GW-24 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-1.1809
M-K Test Value (S)
-16
Tabulated p-value
0.1090
Approximate p-value
0.1188
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 8.8162
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
2250
2000-
1750-
1500-
(0
o
Q.
C
o
1250-
1000-
750 ¦
500 ¦
250 ¦
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
-1.4013
M-K Test Value (S)
-19
Tabulated p-value
0.0820
Approximate p-value
0.0806
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.2927
Theil-Sen Intercept 13,251.0699
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
1.25
1.00'
0.75'
(0
o
Q.
TJ
(0
a)
0.50'
0.25
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.9848
Standardized Value of S
-2.8221
M-K Test Value (S)
-32
Tabulated p-value
0.0050
Approximate p-value
0.0024
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 1.0696
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
0.10
GW-24 Mann-Kendall Trend Test
0.09-
0.08-
0.07-
0.06-
(0
o
Q.
0.05-
3
O
a)
0.04-
0.03-
0.02-
0.01
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7671
Standardized Value of S
-0.9399
M-K Test Value (S)
-13
Tabulated p-value
0.1790
Approximate p-value
0.1736
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0004
Theil-Sen Intercept 17.0930
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
E
D
'E
0)
a)
-------
GW-24 Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
a)
>
c7)
0.20-
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-24 Mann-Kendall Trend Test
0.16
0.14'
0.12'
0.10'
(0
o
Q.
E
D
15
0.08'
0.06'
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
10
(0
o
Q.
6
c
N
GW-24 Mann-Kendall Trend Test
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.5033
Standardized Value of S
-1.1197
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.1314
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0014
Theil-Sen Intercept 62.7243
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
1.5
1.2 ¦
0.9 ¦
(0
O
Q.
>
C
o
E
c
<
0.6 ¦
0.3 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
9.9833
Standardized Value of S
-0.6010
M-K Test Value (S)
-7
Tabulated p-value
0.3240
Approximate p-value
0.2739
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
0.800
0.700 ¦
0.600 ¦
0.500 ¦
(0
o
Q.
c
a)
(0
0.400 ¦
0.300 ¦
0.200 ¦
0.100 ¦
0.000
GW-30 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
11.6905
Standardized Value of S
1.2831
M-K Test Value (S)
16
Tabulated p-value
0.1090
Approximate p-value
0.0997
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept -1.0819
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
800
600
(0
o
Q.
E 400
3
'E
(0
m
200
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
1.2456
M-K Test Value (S)
17
Tabulated p-value
0.1090
Approximate p-value
0.1065
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0964
Theil-Sen Intercept -3,670.9894
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
0.1000000
0.0800000 ¦
0.0600000 ¦
(0
o
Q.
E
3
a)
m
0.0400000 ¦
0.0200000 ¦
0.0000000
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
0.0600
0.0500 ¦
0.0400 ¦
(0
0
Q.
1 0.0300-
E
T3
(0
o
0.0200 ¦
0.0100-
0.0000
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.9848
Standardized Value of S
1.0014
M-K Test Value (S)
12
Tabulated p-value
0.1790
Approximate p-value
0.1583
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
-------
GW-30 Mann-Kendall Trend Test
500
400
300
(0
o
Q.
c
o
200
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.8452
Standardized Value of S 0.4671
M-K Test Value (S) 7
Tabulated p-value 0.3240
Approximate p-value 0.3202
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0189
Theil-Sen Intercept -524.7170
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
100
0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
GW-30 Mann-Kendall Trend Test
0.15
0.12-
0.09-
(0
o
Q.
TJ
(0
a)
0.06-
0.03-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.3246
Standardized Value of S
-1.4230
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.0774
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
3
O
a)
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
60
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.7017
Standardized Value of S -0.5511
M-K Test Value (S) -8
Tabulated p-value 0.2710
Approximate p-value 0.2908
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 2.8756
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
4.0
3.5 ¦
3.0 ¦
2.5 ¦
(0
O
Q.
.1 20 '
'E
0)
a)
-------
GW-30 Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
a)
>
c7)
0.20-
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
0.15
0.10'
(0
o
Q.
E
D
15
0.05'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-30 Mann-Kendall Trend Test
10
(0
o
Q.
6
c
N
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.6623
Standardized Value of S
-0.4738
M-K Test Value (S)
-7
Tabulated p-value
0.3240
Approximate p-value
0.3178
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 12.6552
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
GW-58 Mann-Kendall Trend Test
0.400
0.300 ¦
(0
o
Q.
c
a)
(0
0.200 ¦
0.100 ¦
0.000
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.9392
Standardized Value of S
-1.2798
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.1003
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
125
100 ¦
75-
(0
o
Q.
E
3
'E
(0
m
50-
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
1.3275
M-K Test Value (S)
18
Tabulated p-value
0.0820
Approximate p-value
0.0922
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0036
Theil-Sen Intercept -65.2516
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
25
0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
GW-58 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
a)
m
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
0.35
0.30'
0.25
(0
o
Q.
E
3
E
T3
(0
o
0.20
0.15'
0.10'
0.05'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.5033
Standardized Value of S
0.0000
M-K Test Value (S)
-1
Tabulated p-value
0.5000
Approximate p-value
0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0370
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
3.0
2.5 ¦
2.0 ¦
(0
o
Q.
<5 1.5-
Q.
Q.
O
O
1.0 ¦
0.5 ¦
0.0
GW-58 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.6623
Standardized Value of S
-0.7897
M-K Test Value (S)
-11
Tabulated p-value
0.2230
Approximate p-value
0.2148
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 10.7651
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
600
500 ¦
400 ¦
(0
o
Q.
c
o
300 ¦
200 ¦
100 ¦
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.1792
Standardized Value of S 0.0000
M-K Test Value (S) 1
Tabulated p-value 0.5000
Approximate p-value 0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 18.0000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
0.400
0.300 ¦
(0
o
Q.
TJ
(0
a)
0.200 ¦
0.100 ¦
0.000
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 8.5440
Standardized Value of S 0.0000
M-K Test Value (S) 1
Tabulated p-value 0.5000
Approximate p-value 0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
3
O
a)
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.5033
Standardized Value of S
-0.6398
M-K Test Value (S)
-9
Tabulated p-value
0.2710
Approximate p-value
0.2611
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 7.1492
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
GW-58 Mann-Kendall Trend Test
0.250
0.200
0.150
(0
o
Q.
a)
>
c7)
0.100
0.050
0.000
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
Confidence Coefficient
Level of Significance
Standard Deviation of S
Standardized Value of S
M-K Test Value (S)
Tabulated p-value
Approximate p-value
11
0.9500
0.0500
6.3246
1.1068
8
0.2710
0.1342
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
0.05
0.04-
0.03-
(0
o
Q.
E
D
15
0.02-
0.01
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.3246
Standardized Value of S
-1.4230
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.0774
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-58 Mann-Kendall Trend Test
50
40-
30-
(0
o
Q.
6
C
N
20-
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.4633
Standardized Value of S 0.0802
M-K Test Value (S) 2
Tabulated p-value 0.4400
Approximate p-value 0.4680
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 2.6000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.40
0.30'
(0
o
Q.
>
O 0 20
E
c
<
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
11.6476
Standardized Value of S
-2.5756
M-K Test Value (S)
-31
Tabulated p-value
0.0080
Approximate p-value
0.0050
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 2.9521
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.50
0.40
0.30'
(0
o
Q.
c
a)
(0
0.20
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.4633
Standardized Value of S 0.0802
M-K Test Value (S) 2
Tabulated p-value 0.4400
Approximate p-value 0.4680
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1600
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
100
75-
(0
o
Q.
E
3
'E
(0
m
50-
25-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
1.2456
M-K Test Value (S)
17
Tabulated p-value
0.1090
Approximate p-value
0.1065
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0102
Theil-Sen Intercept -378.2020
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.30
0.20
(0
o
Q.
E
3
a)
m
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 6.3246
Standardized Value of S 0.4743
M-K Test Value (S) 4
Tabulated p-value 0.3810
Approximate p-value 0.3176
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.30
0.20-
(0
o
Q.
E
3
E
T3
(0
o
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.9848
Standardized Value of S
1.3655
M-K Test Value (S)
16
Tabulated p-value
0.1090
Approximate p-value
0.0860
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
0.60
0.50'
GW-59 Mann-Kendall Trend Test
\A
\ .
0.40'
(0
o
Q.
E
3 0.30'
E
o
.c
O
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 11.6476
Standardized Value of S 0.6868
M-K Test Value (S) 9
Tabulated p-value 0.2710
Approximate p-value 0.2461
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
GW-59 Mann-Kendall Trend Test
100
75-
(0
o
Q.
C
o
50-
25-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 11.6905
Standardized Value of S 0.2566
M-K Test Value (S) 4
Tabulated p-value 0.3810
Approximate p-value 0.3987
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 5.0000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
2.0
1.5 ¦
(0
o
Q.
TJ
(0
a)
1.0 ¦
0.5 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.4045
M-K Test Value (S)
-13
Tabulated p-value
0.1790
Approximate p-value
0.0801
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
3
O
a)
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
- 4-
(0
O
Q.
"53
o
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
0.8590
M-K Test Value (S)
12
Tabulated p-value
0.1790
Approximate p-value
0.1952
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0007
Theil-Sen Intercept -28.8776
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
2.5
2.0
1.5 ¦
(0
O
Q.
E
D
'E
0)
a)
-------
GW-59 Mann-Kendall Trend Test
0.50
0.40'
0.30'
(0
o
Q.
a)
>
c7)
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
0.30
0.25-
0.20-
(0
o
Q.
E
D
15
0.15-
0.10-
0.05-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-59 Mann-Kendall Trend Test
12
IO-
CS)
o
Q.
6
C
N
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-1.0235
M-K Test Value (S)
-14
Tabulated p-value
0.1410
Approximate p-value
0.1530
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0015
Theil-Sen Intercept 68.3710
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
0.60
0.50'
0.40'
(0
o
Q.
>
O °-30'
E
c
<
0.20
0.10'
0.00
"-A
»
/
t
i
f I
/
/
t
t
t
t
t
t
t
/
r
i
t
/
/
t
»
/
/
/
t
t
i
t
J
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
11.6905
Standardized Value of S
-2.4807
M-K Test Value (S)
-30
Tabulated p-value
0.0080
Approximate p-value
0.0066
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 4.2923
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
2.5
2.0
1.5 ¦
(0
O
Q.
C
a)
(0
1.0 ¦
0.5 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7671
Standardized Value of S
-0.9399
M-K Test Value (S)
-13
Tabulated p-value
0.1790
Approximate p-value
0.1736
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 7.2556
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
200
150
(0
o
Q.
E 100
3
'E
(0
m
50-
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
2.6469
M-K Test Value (S)
35
Tabulated p-value
0.0030
Approximate p-value
0.0041
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0410
Theil-Sen Intercept -1,688.9869
Statistically significant evidence
of an increasing trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
3
a)
m
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
E
T3
(0
o
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 11.6905
Standardized Value of S 0.4277
M-K Test Value (S) 6
Tabulated p-value 0.3240
Approximate p-value 0.3344
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
-------
GW-61 Mann-Kendall Trend Test
250
200
150
(0
o
Q.
C
o
100
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-0.8660
M-K Test Value (S)
-12
Tabulated p-value
0.1790
Approximate p-value
0.1932
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0103
Theil-Sen Intercept 478.4801
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
50-
0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
GW-61 Mann-Kendall Trend Test
2.0
1.5 ¦
(0
O
Q.
TJ
(0
a)
1.0 ¦
0.5 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.1381
Standardized Value of S
-2.0596
M-K Test Value (S)
-26
Tabulated p-value
0.0200
Approximate p-value
0.0197
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 3.5687
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
0.25
0.20
0.15'
(0
o
Q.
3
O
a)
0.10'
0.05'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
Confidence Coefficient
Level of Significance
Standard Deviation of S
Standardized Value of S
M-K Test Value (S)
Tabulated p-value
Approximate p-value
11
0.9500
0.0500
6.3246
-1.1068
-8
0.2710
0.1342
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
10
(0
o
Q.
"53
o
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
-1.6398
M-K Test Value (S)
-22
Tabulated p-value
0.0430
Approximate p-value
0.0505
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0019
Theil-Sen Intercept 88.4631
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
2.5
2.0
1.5 ¦
(0
O
Q.
E
D
'E
0)
a)
-------
GW-61 Mann-Kendall Trend Test
0.50
0.40'
0.30'
(0
o
Q.
a)
>
c7)
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
E
D
15
0.20-
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
9.9833
Standardized Value of S
-2.2037
M-K Test Value (S)
-23
Tabulated p-value
0.0430
Approximate p-value
0.0138
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-61 Mann-Kendall Trend Test
10
(0
o
Q.
6
c
N
0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-0.3936
M-K Test Value (S)
-6
Tabulated p-value
0.3240
Approximate p-value
0.3469
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0006
Theil-Sen Intercept 29.7918
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
1.00
0.80'
0.60'
(0
o
Q.
>
c
o
E
c
<
0.40'
0.20
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-0.7086
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.2393
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 3.5078
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.75
0.50-
(0
o
Q.
C
a)
(0
0.25-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.4633
Standardized Value of S
-1.3640
M-K Test Value (S)
-18
Tabulated p-value
0.0820
Approximate p-value
0.0863
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 4.6325
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
75
50-
(0
O
Q.
E
3
'E
(0
m
25-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8452
Standardized Value of S
-0.9342
M-K Test Value (S)
-13
Tabulated p-value
0.1790
Approximate p-value
0.1751
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0070
Theil-Sen Intercept 344.8883
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
a)
m
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.25
0.20-
0.15-
(0
o
Q.
E
3
E
T3
(0
o
0.10-
0.05-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 9.9833
Standardized Value of S 0.4007
M-K Test Value (S) 5
Tabulated p-value 0.3810
Approximate p-value 0.3443
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.40
0.30'
(0
o
Q.
E
3
E
o
.c
O
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.8167
Standardized Value of S
0.9245
M-K Test Value (S)
11
Tabulated p-value
0.2230
Approximate p-value
0.1776
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
GW-63 Mann-Kendall Trend Test
250
200 ¦
150 ¦
(0
o
Q.
C
o
100 ¦
50-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.5033
Standardized Value of S
-1.4396
M-K Test Value (S)
-19
Tabulated p-value
0.0820
Approximate p-value
0.0750
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0137
Theil-Sen Intercept 616.7253
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.15
0.10'
(0
o
Q.
TJ
(0
a)
0.05'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
3
O
a)
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
4.0
3.0 ¦
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.7671
Standardized Value of S 0.4700
M-K Test Value (S) 7
Tabulated p-value 0.3240
Approximate p-value 0.3192
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0002
Theil-Sen Intercept -7.0716
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
1.0
0.0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
1.5
1.3 ¦
1.0 ¦
(0
o
Q.
E
D
'E
0)
a)
-------
GW-63 Mann-Kendall Trend Test
0.50
0.40-
0.30-
(0
o
Q.
a)
>
c7)
0.20-
0.10-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
D
15
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
9.9833
Standardized Value of S
-2.0033
M-K Test Value (S)
-21
Tabulated p-value
0.0600
Approximate p-value
0.0226
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-63 Mann-Kendall Trend Test
10
(0
o
Q.
6
c
N
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7017
Standardized Value of S
-0.0787
M-K Test Value (S)
-2
Tabulated p-value
0.4400
Approximate p-value
0.4686
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 2.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
0.75
0.50'
(0
o
Q.
>
C
o
E
c
<
0.25
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.9743
Standardized Value of S
-2.4664
M-K Test Value (S)
-33
Tabulated p-value
0.0160
Approximate p-value
0.0068
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 4.8328
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
(0
o
Q.
c
a)
(0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.0000
Standardized Value of S
0.6429
M-K Test Value (S)
10
Tabulated p-value
0.2730
Approximate p-value
0.2602
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept -0.3999
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
80
60-
(0
o
Q.
E
3
'E
(0
m
40-
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.5488
Standardized Value of S
-0.8248
M-K Test Value (S)
-13
Tabulated p-value
0.2300
Approximate p-value
0.2047
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0032
Theil-Sen Intercept 168.2949
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
20-
0
4/16 5/17 6/18 7/19 9/20 10/21 11/22
Date-post
-------
GW-65 Mann-Kendall Trend Test
0.05
0.04-
0.03-
(0
o
Q.
E
3
a)
m
0.02-
0.01
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 12
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 6.9041
Standardized Value of S 1.1587
M-K Test Value (S) 9
Tabulated p-value 0.3190
Approximate p-value 0.1233
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
0.05
0.04-
0.03-
(0
o
Q.
E
3
E
T3
(0
o
0.02-
0.01
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 12
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 6.9041
Standardized Value of S 1.1587
M-K Test Value (S) 9
Tabulated p-value 0.3190
Approximate p-value 0.1233
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
25
20
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.0000
Standardized Value of S
-0.7857
M-K Test Value (S)
-12
Tabulated p-value
0.2300
Approximate p-value
0.2160
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.9020
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
15
12-
(0
O
Q.
i_
a)
o.
Q.
o
o
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 12
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 14.5144
Standardized Value of S -0.4823
M-K Test Value (S) -8
Tabulated p-value 0.3190
Approximate p-value 0.3148
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0003
Theil-Sen Intercept 14.8922
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
3500
3000-
2500-
2000-
(0
o
Q.
c
o
1500-
1000-
500 ¦
7/19
Date-post
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.4568
Standardized Value of S
-0.4150
M-K Test Value (S)
-7
Tabulated p-value
0.3690
Approximate p-value
0.3391
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0021
Theil-Sen Intercept 161.2066
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
10
(0
o
Q.
TJ
(0
a)
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
13.5769
Standardized Value of S
-0.2946
M-K Test Value (S)
-5
Tabulated p-value
0.4200
Approximate p-value
0.3841
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0850
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
3
O
a)
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 12
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5270
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
20
15-
(0
o
Q.
"53
o
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.3875
Standardized Value of S
-0.4170
M-K Test Value (S)
-7
Tabulated p-value
0.3690
Approximate p-value
0.3383
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 5.7049
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
GW-65 Mann-Kendall Trend Test
0.50
0.40'
0.30'
(0
o
Q.
a)
>
c7)
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.9041
Standardized Value of S
0.0000
M-K Test Value (S)
-1
Tabulated p-value
0.5270
Approximate p-value
0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
D
15
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
9.3630
Standardized Value of S
-1.7088
M-K Test Value (S)
-17
Tabulated p-value
0.1550
Approximate p-value
0.0437
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
GW-65 Mann-Kendall Trend Test
60
50-
40-
(0
o
Q.
6
C
N
30-
20-
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
12
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
14.1539
Standardized Value of S
-0.2826
M-K Test Value (S)
-5
Tabulated p-value
0.4200
Approximate p-value
0.3887
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 5.5500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.30
0.25
0.20
(0
o
Q.
>
O °-15'
E
c
<
0.10'
0.05'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
9.9833
Standardized Value of S
-1.4023
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0804
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
1.5
1.2 ¦
0.9 ¦
(0
O
Q.
C
a)
(0
0.6 ¦
0.3 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.7671
Standardized Value of S
-1.0966
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.1364
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0002
Theil-Sen Intercept 10.6902
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
70
60-
50-
(0
o
Q.
E
3
'E
(0
m
40-
30-
20-
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
-1.4837
M-K Test Value (S)
-20
Tabulated p-value
0.0600
Approximate p-value
0.0690
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0080
Theil-Sen Intercept 386.3003
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
a)
m
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.10
0.08-
0.06-
(0
o
Q.
E
3
E
T3
(0
o
0.04-
0.02-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.3246
Standardized Value of S
-1.4230
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.0774
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
1.00
0.75-
(0
o
Q.
E
3
E
o
.c
O
0.50-
0.25-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 10.9848
Standardized Value of S 0.0910
M-K Test Value (S) 2
Tabulated p-value 0.4400
Approximate p-value 0.4637
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
5.0
4.0 ¦
3.0 ¦
(0
o
Q.
i_
a)
o.
Q.
o
o
2.0
1.0 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.8062
Standardized Value of S
-1.6398
M-K Test Value (S)
-22
Tabulated p-value
0.0430
Approximate p-value
0.0505
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0006
Theil-Sen Intercept 25.2569
Statistically significant evidence
of a decreasing trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
60
50-
40-
(0
o
Q.
C
o
30-
20-
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
10.9848
Standardized Value of S
-0.2731
M-K Test Value (S)
-4
Tabulated p-value
0.3810
Approximate p-value
0.3924
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 5.0000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
TJ
(0
a)
\
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
6.3246
Standardized Value of S
-1.4230
M-K Test Value (S)
-10
Tabulated p-value
0.2230
Approximate p-value
0.0774
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
3
O
a)
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
12.5033
Standardized Value of S
-0.4799
M-K Test Value (S)
-7
Tabulated p-value
0.3240
Approximate p-value
0.3157
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope -0.0001
Theil-Sen Intercept 6.7157
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
0.80
0.60'
(0
o
Q.
| 0.40'
'E
0)
a)
-------
-------
SW-50 Mann-Kendall Trend Test
0.15
0.12'
0.09'
(0
o
Q.
E
D
15
0.06'
0.03'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n
11
Confidence Coefficient
0.9500
Level of Significance
0.0500
Standard Deviation of S
8.5440
Standardized Value of S
-1.6386
M-K Test Value (S)
-15
Tabulated p-value
0.1410
Approximate p-value
0.0507
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-50 Mann-Kendall Trend Test
5.0
4.0 ¦
3.0 ¦
(0
o
Q.
6
C
N
2.0 ¦
1.0 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.5033
Standardized Value of S 0.0000
M-K Test Value (S) 1
Tabulated p-value 0.5000
Approximate p-value 0.5000
Theil-Sen Trend Line (Dashed)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 1.3000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
0.25
0.20-
0.15-
(0
o
Q.
>
C
o
E
c
<
0.10-
0.05-
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 10.8934
Standardized Value of S -0.6426
M-K Test Value (S) -8
Tabulated p-value 0.2710
Approximate p-value 0.2602
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.1000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
2.0
1.5 ¦
(0
o
Q.
C
a)
(0
1.0 ¦
0.5 ¦
0.0
SW-52 Mann-Kendall Trend Test
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.7671
Standardized Value of S -1.4099
M-K Test Value (S)
Tabulated p-value
Approximate p-value
-19
0.0820
0.0793
Theil-Sen Trend Line (Red)
Theil-Sen Slope -0.0005
Theil-Sen Intercept 22.0061
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
80
70-
60-
50-
(0
o
Q.
E
3
'E
(0
m
40-
30-
20-
10-
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.8452
Standardized Value of S -0.7785
M-K Test Value (S) -11
Tabulated p-value 0.2230
Approximate p-value 0.2181
Theil-Sen Trend Line (Red)
Theil-Sen Slope -0.0029
Theil-Sen Intercept 168.9113
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
SW-52 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
E
3
E
T3
(0
o
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 9.9833
Standardized Value of S 0.0000
M-K Test Value (S) 1
Tabulated p-value 0.5000
Approximate p-value 0.5000
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
-------
SW-52 Mann-Kendall Trend Test
(0
o
Q.
i_
a)
o.
Q.
o
o
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.7671
Standardized Value of S -0.9399
M-K Test Value (S) -13
Tabulated p-value 0.1790
Approximate p-value 0.1736
Theil-Sen Trend Line (Red)
Theil-Sen Slope -0.0003
Theil-Sen Intercept 13.0548
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
8000
6000-
(0
o
Q.
c
o
4000-
2000-
X
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.8452
Standardized Value of S -0.1557
M-K Test Value (S) -3
Tabulated p-value 0.4400
Approximate p-value 0.4381
Theil-Sen Trend Line (Red)
Theil-Sen Slope -0.0183
Theil-Sen Intercept 882.8640
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
4.0
3.0 ¦
(0
o
Q.
TJ
(0
a)
2.0 ¦
1.0 ¦
0.0
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 11.6905
Standardized Value of S -0.7699
M-K Test Value (S) -10
Tabulated p-value 0.2230
Approximate p-value 0.2207
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
0.10
0.08'
0.06'
(0
o
Q.
3
O
a)
0.04'
0.02
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 0.0000
Standardized Value of S
M-K Test Value (S) 0
Tabulated p-value 0.5000
Approximate p-value
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0500
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
10
(0
o
Q.
"53
o
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.4633
Standardized Value of S -0.4012
M-K Test Value (S) -6
Tabulated p-value 0.3240
Approximate p-value 0.3441
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.6000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
1.00
0.80'
0.60
(0
o
Q.
E
D
'E
0)
a)
-------
SW-52 Mann-Kendall Trend Test
0.50
0.40'
0.30'
(0
o
Q.
a)
>
c7)
0.20
0.10'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 6.3246
Standardized Value of S -0.4743
M-K Test Value (S) -4
Tabulated p-value 0.3810
Approximate p-value 0.3176
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.2000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
0.15
0.12'
0.09'
(0
o
Q.
E
D
15
0.06'
0.03'
0.00
4/16
5/17
6/18
7/19
Date-post
9/20
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 8.5440
Standardized Value of S -1.6386
M-K Test Value (S) -15
Tabulated p-value 0.1410
Approximate p-value 0.0507
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 0.0100
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
-------
SW-52 Mann-Kendall Trend Test
25
20-
15-
(0
O
Q.
6
C
N
10-
7/19
Date-post
10/21
11/22
Mann-Kendall Trend Analysis
n 11
Confidence Coefficient 0.9500
Level of Significance 0.0500
Standard Deviation of S 12.5033
Standardized Value of S 0.0000
M-K Test Value (S) 1
Tabulated p-value 0.5000
Approximate p-value 0.5000
Theil-Sen Trend Line (Red)
Theil-Sen Slope 0.0000
Theil-Sen Intercept 1.7000
Insufficient statistical evidence
of a significant trend at the
specified level of significance.
------- |