HomeMy WebLinkAbout2021 1st
FIRST SEMIANNUAL GROUNDWATER MONITORING REPORT OF 2021
TOWN OF SOUTHOLD LANDFILL
POST CLOSURE GROUNDWATER MONITORING PROGRAM
Prepared for:
TOWN OF SOUTHOLD
SOLID WASTE MANAGEMENT DISTRICT
CUTCHOGUE, SUFFOLK COUNTY, NEW YORK
Preparedby:
D&B ENGINEERS AND ARCHITECTS
WOODBURY, NEW YORK
JULY 2021
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FIRST SEMIANNUAL GROUNDWATER MONITORING REPORT OF 2021
TOWN OF SOUTHOLD LANDFILL
POST CLOSURE GROUNDWATER MONITORING PROGRAM
TABLE OF CONTENTS
SectionTitlePage
1.0 INTRODUCTION....................................................................................................... 1-1
2.0 SAMPLING PROCEDURES AND ANALYSES .................................................... 2-1
2.1 Groundwater Level Measurement Procedures .................................................. 2-1
2.2 Groundwater Sampling Procedures .................................................................. 2-1
2.3 Sample Analyses ............................................................................................... 2-3
3.0 GROUNDWATER LEVEL MEASUREMENTS .................................................... 3-1
4.0 DISCUSSION OF RESULTS .................................................................................... 4-1
4.1 Data Validation ................................................................................................. 4-1
4.2 Groundwater Results ......................................................................................... 4-2
4.2.1 Field Parameters ................................................................................... 4-2
4.2.2 Volatile Organic Compounds ............................................................... 4-3
4.2.3 Inorganic Parameters (Metals) .............................................................. 4-4
4.2.4 Leachate Indicators ............................................................................... 4-5
5.0 CONCLUSIONS AND RECOMMENDATIONS ................................................... 5-1
List of Appendices
Groundwater Analytical Results...................................................................................A
Groundwater Sampling Logs ........................................................................................B
Chain of Custody Forms...............................................................................................C
Data Validation Check List ..........................................................................................D
Historical Graphs………………………………………………………………………E
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TABLE OF CONTENTS (continued)
List of Figures
1-1 Site Location Map .............................................................................................1-2
2-1 Groundwater Monitoring Well Location Map ..................................................2-2
List of Tables
3-1 Groundwater Level Data – May 27, 2021 ........................................................3-2
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1.0 INTRODUCTION
The Town of Southold has retained D&B Engineers and Architects (D&B) to perform
post-closure groundwatermonitoring and reporting for theclosed and capped municipal solid
waste (MSW) landfill in Cutchogue, New York (i.e., the Site). The location of the Site is shown
in Figure 1-1. This report documents the results of the semiannual groundwater monitoring
eventconducted on May 27,2021 and describesthe work performed and the results obtained.
Thegroundwatermonitoring wells were sampled in strict conformance with theQuality
Assurance/Quality Control (QA/QC) Plan, which ispartof the Post Closure Monitoring and
Maintenance Manual, dated August 2003.
In the past, groundwater sampling was performed quarterly, with three rounds analyzed
for New York Codes, Rules and Regulations (NYCRR)Part 360 Routine Parameters and one
round analyzed for 6 NYCRR Part 360 Baseline Parameters on a rotating basis. In the Spring of
2015, on behalf of the Town of Southold, D&B proposed modifications to the New York State
Department of Environmental Conservation (NYSDEC) pertaining to the sampling frequency
and analyses for the Post-Closure Groundwater Monitoring Program for the Site. The request for
these modifications was approved by the NYSDEC on July 2, 2015. Modifications to the Post-
Closure Groundwater Monitoring Program included:
A reduction in sampling frequency from quarterly to semiannually for all well
clusters (MW-1, MW-3, MW-4, MW-5, MW-6 and MW-8); and
Groundwater analysis for 6 NYCRR Part 360 Baseline Parameters for both
semiannual sampling events.
This report is organized into the following sections: Section 2.0 (Sampling Procedures
and Analyses) describes the water level measurements and groundwater sampling procedures, as
well as the groundwater analyses; Section 3.0 (Groundwater Level Measurements) summarizes
the groundwater level measurements and groundwater elevations; Section 4.0 (Discussion of
Results) summarizes the key findings from this groundwater monitoring event, including
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1-1
Long Island
Sound
Southold
48
25
Great Peconic
Bay
SOUTHOLD LANDFILL
CUTCHOGUE, NEW YORK
SITE LOCATION MAP
Figure 1-1
5535-A01 -Site Location Map.indd (07/06/21 - 11:01 AM)
comparison of the laboratory results to NYSDEC Class GA Groundwater Standards and
Guidance Values; and Section 5.0 (Conclusions and Recommendations) provides conclusions
and recommendations based on the first semiannual 2021 results.
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2.0 SAMPLING PROCEDURES AND ANALYSES
Water level measurements and groundwater samples were collected from the Site’s 12
monitoring wells(MW-1S, MW-1D, MW-3S, MW-3D, MW-4S, MW-4D, MW-5S, MW-5D,
MW-6S, MW-6D, MW-8S and MW-8D) on May 27, 2021, as partof thisSemiannual 2021
groundwater monitoring event. A site plan showing the locations of the monitoring wells is
provided in Figure 2-1. The following sectionsprovide a brief discussion of the procedures used
during groundwater level measurements, groundwatersampling and sample analysis.
2.1 Groundwater Level Measurement Procedures
Water level measurements were obtained from the 12 monitoring wells to determine the
volume of standing water in the well for purposes of purging, as well as for determination of
groundwater elevations and flow direction. Groundwater level measurements were obtained from
a surveyed measuring point on each well utilizing a decontaminated electronic water level
indicator to an accuracy of 0.01 foot. A discussion regarding groundwater level measurements
and groundwater flow direction is provided in Section 3.0.
2.2 Groundwater Sampling Procedures
Sampling procedures for the collection of the groundwater samples were implemented in
accordance with the protocol described in the Quality Assurance/Quality Control (QA/QC) Plan,
which is part of the Post Closure Monitoring and Maintenance Manual, dated August 2003. Field
decontamination was performed between sampling locations for non-disposable equipment.
Prior to collecting groundwater samples, the 12 monitoring wells were purged to remove
the standing water in each well. Well purging was accomplished by first measuring the static
water level in the well and then calculating the volume of standing water. A decontaminated
submersible pump and dedicated low density polyethylene tubing was used to purge the water
from the well. Decontamination of the submersible pump used for well purging was performed
in accordance with the procedure described in the QA/QC Plan.
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150
3000300
SCALE IN FEET
*NOTE: WELL SYMBOLS NOT TO SCALE
SCALE: 1"=300'
F:\\5535\\dwg\\5535-FIG-2-1.dwg, Figure 2, 7/6/2021 11:55:33 AM, rferrell
During the purging process, groundwater was monitored and recorded for the following
field parameters: pH, temperature, specific conductance, oxidation reduction potential (ORP),
dissolved oxygen and turbidity. Whenthe values of the field parameters stabilized to within 10%
based on the last two readings, the turbidity of the groundwaterwasless than 50 Nephelometric
Turbidity Units (NTUs), and at least three well volumes had been removed, well purging was
considered complete.
In accordance with the QA/QC Plan, groundwater samples were collected using new,
dedicated, disposable polyethylene bailers and polypropylene rope. Samples for VOC analysis
were collected first, followed by inorganic parameters and leachate indicators. Each sample was
labeled with the well number, time, and date, stored in an ice-filled cooler with the chain of
custody forms, and delivered to the laboratory (Pace Analytical Services, Inc.).
Appropriate quality assurance/quality control (QA/QC) samples, which included matrix
spike and matrix spike duplicate (MS/MSD) sets and a trip blank were collected in accordance
with the QA/QC Plan.
Tables summarizing the analytical results are provided in Appendix A and are discussed
in Section 4.0. Groundwater sampling logs for this Semiannual 2021 groundwater monitoring
event are provided in Appendix B, and the chain of custody forms are provided in Appendix C.
2.3 Sample Analyses
Groundwater samples collected during this Semiannual 2021 groundwater monitoring
event from the 12 monitoring wells were analyzed for 6 NYCRR Part 363 Baseline Parameters.
Laboratory analyses were performed by Pace Analytical Services, Inc., located in Melville, New
York. This laboratory is approved under the New York State Department of Health
Environmental Laboratory Approval Program (ELAP) for the analyses performed.
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3.0 GROUNDWATER LEVEL MEASUREMENTS
Groundwater level measurements were collected by D&B on May 27, 2021, from the 12
groundwater monitoring wellsaspartof thisSemiannual 2021groundwater monitoring event.
The groundwater level measurements from the monitoring wells are summarized in Table3-1.
As shown in Table 3-1, watertable elevations in the shallow (“S”) wells at the Site
ranged from7.38feet above meansea level (MSL) in well MW-1S, located on thesouth end of
the Site, to 5.86 feet above MSL in well MW-5S, located on the north side of the Site. Based
upon the May 27, 2021 groundwater level measurements and calculated water table elevations,
groundwater flow direction was determined to be in a north-northwesterlydirection. Therefore,
well cluster MW-1 is located upgradient of the Site, and the other wells are located along the
downgradient boundary of the Site.
Potentiometric surface elevations in the deep (“D”) wells at the Site are generally
consistent with the shallow well water table elevations, except for well MW-8D, and indicate no
substantial vertical hydraulic gradient throughout the landfill site. An upward vertical hydraulic
gradient is indicated at well cluster MW-8, due to the lower water table elevation.
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Table 3-1
SOUTHOLD LANDFILL
FIRST SEMIANNUAL 2020 GROUNDWATER MONITORING EVENT
MONITORING WELL GROUNDWATER ELEVATION MEASUREMENTS
MAY 27, 2021
Measuring Point Depth toWater from
Elevation Measuring Point Groundwater Elevation
Well Designation (feet above msl)(feet)(feet above msl)
37.45
7.38
MW-1S 44.83
MW-1D 37.36
7.52
44.88
MW-3S 43.11
6.39
49.50
MW-3D 42.80
6.39
49.19
MW-4S 57.15
5.88
63.03
MW-4D 57.05
5.87
62.92
MW-5S 62.28
5.86
68.14
MW-5D 61.80
5.84
67.64
MW-6S 49.27
6.50
55.77
49.22
6.49
MW-6D 55.71
47.90
6.26
MW-8S 54.16
47.70
7.59
MW-8D 55.29
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4.0 DISCUSSION OF RESULTS
4.1 Data Validation
Twelve groundwater samples, one matrix spike/matrix spike duplicate (MS/MSD),and
one trip blank were collected as part of the May 2021 Sampling Event performed at Town of
Southold Landfill. All samples were analyzed forthe 6NYCRR Part 363Baseline Parameters,
includingvolatile organiccompounds (VOCs), inorganic parameters (metals),and leachate
indicators. Sample analysis was performed in accordance with SW-846 methods. The laboratory
analyses were performed by Pace Analytical Services, Inc., Melville, New York.
The data package (70174774)submitted by the analytical laboratory was validated in
accordance with NYSDEC quality assurance/quality control (QA/QC) requirements, the contract
requirement, and Part 363. All samples were analyzed within the method specified holding times
except where noted below. The following requirements were outside limits and required
qualification of the data:
Boron was detected in the preparation blank and was qualified as non-detect (UB) in
sample MW-5S.
Hexavalent chromium in all samples were analyzed outside the holding time. They
were qualified as an estimated detection limit (UJ) in in samples MW-3S, MW-3D,
MW-4S, MW-4D, MW-6S, MW-6D, MW-8S and MW-8D.
The relative percent difference was above the QC limit in the laboratory duplicate for
fluoride associated with all samples and it was qualified as estimated (J/UJ).
The percent recovery for hexavalent chromium, fluoride, chloride, and cyanide were
below the QC limit in the MS associated with all samples. They were qualified as
estimated (J/UJ) in all samples.
No other issues were identified with the sample results and all results are deemed valid
and usable for environmental assessment purposes as qualified above. Data Validation checklists
completed for the May 2021 Sampling Event are provided in Appendix D.
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4.2 Groundwater Results
The laboratory results for this Semiannual2021groundwater monitoringevent are
summarizedon Table A-1 through TableA-3 andpresentedin Appendix A.These resultsare
compared to the New York State Department of Environmental Conservation Ambient Water
Quality Standards and Guidance Values for Class GA groundwater (herein referred to as the
Class GAgroundwater standardsandguidance values).Table A-1 provides theVOCresults,
Table A-2 the inorganic parameters (metals) results,and Table A-3 the leachate indicator
results. Graphs illustrating historical total volatile organic compounds (TVOC's), select inorganic
parameters and select leachate indicators for the monitoring wells are presented in Appendix E.
Field parameters measured during the groundwater purging process are presented on the
groundwater sampling logs in Appendix B. A discussion of the field parameters and each
analytical parameter group is provided below.
4.2.1 Field Parameters
A review of the field parameters collected immediately prior to collection of the
groundwater samples, provided on the groundwater sampling logs in Appendix B, indicates the
following key findings:
Conductivity values werehighest in deep wells locateddowngradient of the Site,
including wells MW-3D, MW-4D, MW-5D, and MW-8D.Thehigher conductivity
values appearto beSite-related. There is no Class GA standardor guidance value for
conductivity.
Groundwater temperatures wereapproximately 1 to 2 degrees Celsius higher in many
of the downgradient wells, relative to the upgradient wells.The highest temperatures
were recorded in well clusters MW-3,MW-4 and MW-8. There is no Class GA
standard or guidance value for temperature.
Groundwater pHwaslowerthan the minimum Class GA groundwater standard of 6.5
in upgradient well MW-1S and in five (5) downgradient wells (MW-3S, MW-4S,
MW-5D, MW-6S and MW-6D). Theresults are consistent with thenaturally low pH
of Long Island groundwater. In general, groundwater pH was higher in each of the
deep wellclusters.
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Dissolved Oxygen(DO) concentrationswere lower in the downgradient wells relative
toupgradient wells and were generally lower in the deep wells relative to the shallow
wells. DO concentrations in the downgradient wells ranged between 0.26 mg/l at deep
well MW-5 to a maximum of 5.98 mg/l at shallow well MW-5S. It should be noted
that the DO concentrations in upgradient wells MW-1S and MW-1D were 8.07 mg/l
and 2.51 mg/l, respectively. There is no Class GA standard or guidance value for DO.
The Oxidation-Reduction Potential (ORP) of groundwater was positive in upgradient
well cluster MW-1 and at downgradient well clusters MW-5 and MW-6, as well as
well MW-4S, indicating oxidizing conditions. The ORP of groundwater was negative
in well clusters MW-3 and MW-8, as well as well MW-4D, indicating reducing
conditions. There is no Class GA standard or guidance value for ORP.
In general, the groundwater samples collected from the 12 Site monitoring wells were
observed to be clear and did not have a noticeable odor.
Light non-aqueous phase liquid (LNAPL) or dense non-aqueous phase liquid
(DNAPL) was not noted in any of the groundwater samples collected from the 12 Site
monitoring wells.
Overall, the field parameter results obtained during this Semiannual 2021 groundwater
monitoring eventare consistent with previous sampling events and are indicative of limited
leachate impacts, typical of a closed municipal solid waste (MSW) landfill. The leachate-related
impacts are relatively minor inmagnitude and limited to higher conductivity and temperature
and lower DOand ORP in certain downgradient wells.
4.2.2Volatile Organic Compounds
Review of the VOC results provided on Table A-1 in Appendix A indicates the
followingkey findings:
VOCs were not detected above Class GA groundwater standards in upgradient well
cluster MW-1.
Nine out of the ten downgradient monitoring wells did not exhibit any VOC
concentrations above their respective Class GA groundwater standards.
Downgradient well (MW-4D) exhibited VOC concentrations of 1,2-dichloroethane
and 1,2-dichloropropane, which exceeded their respective Class GA groundwater
standards.
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4-3
In general, the VOC results for thisSemiannual 2021 groundwater monitoring event are
consistent with previous sampling events. Based on these results, the Site is not a significant
source of VOC contaminantsingroundwater.
4.2.3Inorganic Parameters (Metals)
Review of the inorganic parameter (metals) results provided on Table A-2 in
Appendix A indicates the following key findings:
Iron, magnesium, manganese and sodium were detected above their respective Class
GA groundwater standards/guidance values in one or more wells, as follows:
- Iron was detected above the Class GA guidance value of 300 ug/l in downgradient
wells (MW-3S, MW-3D, MW-6S, MW-8S and MW-8D). Iron concentrations in
these wells ranged from 4,090 ug/l in shallow well MW-6S to a maximum of
65,400 ug/l in shallow well MW-3S.
- Magnesium was detected above the Class GA guidance value of 35,000 ug/l in
deep downgradient well MW-4D, at a concentration of 51,300 ug/l. At each well
cluster, higher magnesium concentrations were detected in the deep well, which
suggests that the detected magnesium concentrations may be partly associated
with naturally saline groundwater conditions at depth.
- Manganese was detected above the Class GA groundwater standard of 300 ug/l in
all downgradient wells, with the exception of MW-5S. Manganese concentrations
in thewells which exceeded the groundwater standard, ranged from 600ug/l in
deep well MW-6D to a maximum of 7,800 ug/l in deep well MW-5D.
- Sodium was detected above the Class GA groundwater standard of 20,000 ug/l in
upgradient well MW-1S and five (5) downgradient wells (MW-3S, MW-3D,
MW-4D, MW-5D and MW-8D). Sodium concentrations which exceeded the
groundwater standard in the downgradient wellsranged from 33,900 ug/l in
shallow well MW-3Sto a maximum of 149,000 ug/l in deep well MW-4D. At
each downgradient well cluster, higher sodium concentrations were detected in
thedeep well, which suggests that the detected sodium concentrations may be
partly associated with naturally saline groundwater conditions at depth.
In general, the inorganic parameter results for this Semiannual 2021 groundwater
monitoring event are consistent with previous sampling events and are indicative of limited
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leachate impacts, typical of a closed MSW landfill. Groundwater in the North Fork of Long
Island is also naturally saline at depth, which may contribute to the higher concentrations of
some inorganic parameters observed in the deep wells.
4.2.4Leachate Indicators
Review of the leachate indicatorresults provided on Table A-3 in Appendix A indicates
the following key findings:
Ammoniaandchloride were detected above their respective Class GA groundwater
standards in one or more wells, as follows:
- Ammonia was detected above the Class GA groundwater standard of 2 mg/l in 6
downgradient monitoring wells (MW-3S, MW-3D, MW-4D, MW-5D, MW-8S
and MW-8D). Ammonia concentrations in these wells ranged from7.3mg/l in
shallow well MW-3S to a maximum of 55.4 mg/l in deep well MW-5D.
- Chloride was detected slightly above the Class GA groundwater standard of 250
mg/l in downgradient deep well MW-4D, at a concentration of 264 mg/l.
In general, the leachate indicator results for this Semiannual 2021 groundwater
monitoring event are consistent with previous sampling events and are indicative of limited
leachate impacts, typical of a closed MSW landfill.
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5.0 CONCLUSIONS AND RECOMMENDATIONS
Based on the results of this Semiannual 2021 groundwater monitoring event, D&B
concludes thefollowing:
Water level elevations, horizontal and vertical hydraulic gradients, and groundwater
flow directionsare consistent with previousresults and local/regional hydrogeologic
conditions.
In general, groundwaterqualityis consistent with previous sample results and are
indicative of limited downgradient leachate impacts.
Aportion of the elevated metal concentrations detected in downgradient deep wells
may be related, in part, to naturally saline groundwater conditions at depth.
The results discussed in this report are generally consistent with previous sampling events
and do not indicate any significant changes or deterioration in groundwater quality that would
warrant a change in the scope of the monitoring program. Therefore, it is recommended that
semiannual groundwater monitoring continue consistent with the NYSDEC approved petition.
The next monitoring round (Second Semiannual 2021 groundwater monitoring event) is
scheduled to be conducted in November of 2021 for Part 363 Baseline Parameters.
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APPENDIX A
GROUNDWATER ANALYTICAL RESULTS
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Exceeds Class GA Standard/Guidance Value
J:\\_HazWaste\\5535 (Southold GW and LFG Monitoring)\\Groundwater\\1st 2021 GW Report\\May 2021.xlsx
2.9
6.5
Exceeds Class GA Standard/Guidance Value
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Exceeds Class GA Standard/Guidance Value
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Table A-2
Page 1 of 1
Town of Southold Landfill
Groundwater Monitoring Program
Monitoring Well Sample Results
Inorganic Parameters
Sample ID MW-1SMW-1DMW-3SMW-3DMW-4SMW-4DMW-5SMW-5DMW-6SMW-6DMW-8SMW-8D
Sample_date 05/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/2105/27/21
Units in ug/l
NYSDEC CLASS GA
GROUNDWATER ST/GV
METALS
Aluminum--200U200U200U200U200U200U125J200U1640200U386200U
Antimony 3 ST60U60U60U60U60U60U60U60U60U60U60U60U
25 ST10U10U10U10U10U10U10U10U10U10U10U10U
Arsenic
1000 ST58.4J25.9J115J22986.7J135J39J115J118J22.4J158J53.5J
Barium
3 GV5U5U5U5U5U5U5U5U5U5U5U5U
Beryllium
1000 ST11.2J11.6J99.62391215078.3UB41721.4J41.8J137153
Boron
5 ST2.5U2.5U2.5U2.5U2.5U2.5U2.5U2.5U2.5U2.5U2.5U2.5U
Cadmium
--52602240019000246008800012300059303690020400370005950041200
Calcium
50 ST20UJ20UJ20UJ20UJ20UJ20UJ20UJ20UJ20UJ20UJ20UJ20UJ
Chromium, Hexavalent
50 ST3.7J10U10U10U10U1.5J5.8J2.7J13.11.4J3.8J2.2J
Chromium, Total
--50U50U18.9J27.3J50U12.1J50U18.9J7.9J50U11.7J4J
Cobalt
200 ST25U25U6.6J3.9J4J25U25U8.9J9.4J25U10.6J25U
Copper
200 ST10UJ10UJ10UJ10UJ10UJ10UJ10UJ10UJ10UJ10UJ10UJ10UJ
Cyanide
300 ST #20U20U 6540032200 20U 288 214 80.24090203431009480
Iron
25 ST5U5U5U5U5U5U5U5U5U5U5U5U
Lead
35000 GV429010100120001410012000 51300 4170191006120130001120019900
Magnesium
300 ST #8.3J10U 2770125012803590 58.2 780015106009241750
Manganese
0.7 ST0.2U0.2U0.2U0.2U0.2U0.2U0.2U0.2U0.2U0.2U0.2U0.2U
Mercury
100 ST20.4J13.9J19.5J31.6J19.1J40.810.8J37.5J31.1J31.3J21.2J20.4J
Nickel
--2710J1200J107003250013700437002060J5930055403120J2240027200
Potassium
10 ST10U10U10U10U10U10U10U10U10U10U10U10U
Selenium
50 ST10U10U10U10U10U10U10U10U10U10U10U10U
Silver
20000 ST 23700 15900 3390042300 8840 149000 13200 60800 115001490020000 39900
Sodium
0.5 GV10U10U10U10U10U10U10U10U10U10U10U10U
Thallium
--50U50U50U50U50U50U50U50U5.1J50U50U50U
Vanadium
2000 GV
20U20U20U20U20U20U20U20U11.3J20U20U20U
Zinc
ug/lMicrograms per liter
UCompound was analyzed for but not detected
GV Guidance Value
ST Standard
#Standard for total iron and manganese is 500 ug/l
--No ST or GV
J:Estimated value or detection limit
Exceeds Class GA Standard/Guidance Value
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264J
7.341.924.6
Exceeds Class GA Standard/Guidance Value
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55.418.511.5
Exceeds Class GA Standard/Guidance Value
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APPENDIX B
GROUNDWATER SAMPLING LOGS
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APPENDIX C
CHAIN OF CUSTODY FORMS
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APPENDIX D
DATA VALIDATION CHECK LIST
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DATA VALIDATION CHECKLIST
Project Name: Town of Southhold Landfill
Project Number: 5535
Sample Date(s): May 27, 2021
Sample Team: Keith Robins
Matrix/Number Water/ 12
of Samples: Field Duplicates/ 0
Trip Blanks / 1
Field Blanks/ 0
Analyzing
Pace Analytical Services, LLC, Melville, NY
Laboratory:
Analyses: Volatile Organic Compounds (VOCs): by SW846 8260C
Metals: Total by SW846 Method 6010C and mercury by Method 7470A
General Chemistry: Hardness (SM 2340 B), Alkalinity (SM2320B), Chemical
Oxygen Demand (COD) (USEPA 410.4), Color (SM 2120B), Fluoride, Sulfate,
and Bromide (USEPA 300.0), Chloride (SM22 45000), Total Dissolved Solids
(SM 2540C), Biochemical Oxygen Demand (BOD) (SM5210B), Nitrate (USEPA
353.2), Ammonia (SM 22 4500), Total Kjeldahl Nitrogen (TKN) (USEPA 351.2),
Hexavalent Chromium (SM22 3500), Cyanide (USEPA 9014), Total Organic
Carbon (USPEA 9060A) and Phenolics (USEPA 420.1)
Laboratory
70174774 Date: 07/02/2021
Report No:
ANALYTICAL DATA PACKAGE DOCUMENTATION
Performance
GENERAL INFORMATION
Reported Acceptable Not
No Yes No Yes Required
1. Sample results X X
2. Parameters analyzed X X
3. Method of analysis X X
4. Sample collection date X X
5. Laboratory sample received date X X
6. Sample analysis date X X
7. Copy of chain-of-custody form signed by
X X
Lab sample custodian
8. Narrative summary of QA or sample
X X
problems provided
QA - quality assurance
Comments:
A validation was conducted on the data package and any applicable qualification of the data was determined
using the USEPA National Functional Guidelines of Organic Data Review, January 2017, or USEPA
National Functional Guidelines of Inorganic Data Review, January 2017, method performance criteria, and
Pages
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forms\\70174774_May_2021.docx 1/6
D&B Engineers and Architects, P.C. professional judgment. The qualification of data discussed within
this data validation checklist did not impact the usability of the sample results.
Custody Numbers: 70174774
SAMPLE AND ANALYSIS LIST
Sample
Analysis
Parent
Collection
Sample ID Lab ID
Sample
Date
VOC SVOC PCB MET MISC
TRIP BLANK 70174774-001 X
5/27/2021
MW-3D 70174774-002 5/27/2021 X X X
MW-3S 70174774-003 5/27/2021 X X X
MW-6D 70174774-004 5/27/2021 X X X
MW-6S 70174774-005 5/27/2021 X X X
MW-8D 70174774-006 5/27/2021 X X X
MW-8S 70174774-007 5/27/2021 X X X
MW-4D 70174774-008 5/27/2021 X X X
MW-4S 70174774-009 5/27/2021 X X X
MW-5D 70174774-010 5/27/2021 X X X
MW-5S 70174774-011 5/27/2021 X X X
MW-1D 70174774-012 5/27/2021 X X X
MW-1S 70174774-013 5/27/2021 X X X
Pages
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ORGANIC ANALYSES
VOCS
Performance
Reported Not
Acceptable
No Yes No Yes Required
1. Holding times X X
2. Blanks
A. Method blanks X X
B. Trip blanks X X
C. Field blanks X
3. Matrix spike (MS) %R X X
4. Matrix spike duplicate (MSD) %R X X
5. MS/MSD precision (RPD) X X
6. Laboratory control sample (LCS) %R X X
7. Surrogate spike recoveries X X
8. Instrument performance check X X
9. Internal standard retention times & areas X X
X X
11. Continuing X X
12. Field duplicate X
VOCs - volatile organic compounds %D - percent difference RRF - relative response factor
%R - percent recovery %RSD - percent relative standard deviation RPD - relative percent difference
Comments:
Performance was acceptable, except the following:
5. The RPD was above the QC limit in the MS/MSD for bromomethane. It was not detected, and
qualification of the data was not necessary.
Pages
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INORGANIC ANALYSES
METALS
Performance
Reported Acceptable Not
No Yes No Yes Required
1. Holding times X X
2. Blanks
A. Preparation and calibration blanks X X
B. Field blanks X
3. Initial calibration verification %R X X
4. Continuing calibration verification %R X X
5. CRDL standard %R X X
6. Interference check sample %R X X
7. Laboratory control sample %R X X
8. Spike sample %R X X
9. Post digestive spike sample %R X X
10. Duplicate RPD X X
11. Serial dilution check %D X X
12. Field duplicate X
%R - percent recovery %D - percent difference RPD - relative percent difference
Comments:
Performance was acceptable, except the following:
2A. Boron, potassium, and thallium were detected in the preparation blank. Boron was qualified
as non-detect (UB) in sample MW-5S.
Pages
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INORGANIC ANALYSES
GENERAL CHEMISTRY
Performance
Reported Acceptable Not
No Yes No Yes Required
1. Holding times X X
2. Blanks
A. Method blanks X X
B. Field blanks
3. Standards %R X X
4. Laboratory spike %R X X
5. Laboratory duplicate RPD X X
6. Matrix spike and matrix spike duplicate %R X X
7. Field duplicate
%R percent recovery RPD - relative percent difference %D percent difference
RSD - relative standard deviation
Comments:
Performance was acceptable, except the following:
1. The holding times were exceeded, and the following were qualified as an estimated detection limit
(UJ): hexavalent chromium in samples MW-3S, MW-3D, MW-4S, MW-4D, MW-6S, MW-
6D, MW-8S and MW-8D.
5. The RPD was above the QC limit in the laboratory duplicate for fluoride associated with all samples
and it was qualified as estimated (J/UJ).
6. The %R for hexavalent chromium, fluoride, chloride, and cyanide were below the QC limit in the
MS associated with all samples. They were qualified as estimated (J/UJ) in all samples.
Pages
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DATA VALIDATION AND
QUALIFICATION SUMMARY Laboratory Numbers: 70174774
Sample ID Analyte(s) Qualifier Reason(s)
VOCs
No qualification of the data was
necessary.
Metals
MW-5S Boron UB Detected in the blanks
General Chemistry
MW-3S, MW-3D, MW-4S, MW-
4D, MW-6S, MW-6D, MW-8S Hexavalent chromium UJ The holding times were exceeded
and MW-8D
The RPD was above the QC limit
All samples fluoride J/UJ
in the laboratory duplicate
hexavalent chromium,
The %Rs were below the QC
All samples fluoride, chloride, and J/UJ
limits in the MS
cyanide
Donna M. Brown 7/16/2021
VALIDATION PERFORMED BY & DATE:
VALIDATION PERFORMED BY
SIGNATURE:
Pages
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forms\\70174774_May_2021.docx 6/6
APPENDIX E
HISTORICAL GRAPHS
5535\\KK07192101
Legend
MW-1S*
MW-3S
MW-4S
750
MW-5S
MW-6S
700
MW-8S
650
600
550
500
450
400
350
300
250
200
150
100
50
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\3753\\graphs\\5S_Alk.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Alkalinity Data for Shallow Monitoring Wells
E
Legend
MW-1D*
MW-3D
MW-4D
900
MW-5D
MW-6D
800 MW-8D
700
600
500
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
J:\\_HazWaste\\5535\\graphs\\5_Alk.grf
*=only upgradient well
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Alkalinity Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
60
MW-5S
56
MW-6S
MW-8S
52
48
44
40
36
32
28
24
20
16
12
8
4
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_Amm.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Ammonia Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
100
MW-5D
MW-6D
90
MW-8D
80
70
60
50
40
30
20
10
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
J:\\_HazWaste\\5535\\graphs\\5_Amm.grf
*=only upgradient well
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Ammonia Data for Deep Monitoring Wells
E
Legend
MW-1S*
MW-3S
MW-4S
110000
MW-5S
MW-6S
100000
MW-8S
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_CA.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Calcium Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
180000
MW-5D
MW-6D
160000
MW-8D
140000
120000
100000
80000
60000
40000
20000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_CA.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Calcium Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
250
MW-5S
MW-6S
MW-8S
200
150
100
50
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_CL.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Chloride Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
500
MW-5D
MW-6D
450
MW-8D
400
350
300
250
200
150
100
50
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_CL.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Chloride Data for Deep Monitoring Wells
E
Legend
MW-1S*
MW-3S
MW-4S
MW-5S
160000
MW-6S
120000
MW-8S
80000
40000
500
450
400
350
300
250
200
150
100
50
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_FE.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Iron Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
MW-5D
100000
80000
MW-6D
60000
MW-8D
40000
20000
1000
900
800
700
600
500
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_FE.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Iron Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
500
MW-5S
MW-6S
MW-8S
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
J:\\_HazWaste\\5535\\graphs\\5S_hard.grf
*=only upgradient well
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Hardness Data for Shallow Monitoring Wells
E
Legend
MW-1D*
MW-3D
MW-4D
900
MW-5D
MW-6D
MW-8D
800
700
600
500
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_hard.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Hardness Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
120000
MW-5S
MW-6S
110000
MW-8S
100000
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_K.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Potassium Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
130000
MW-5D
MW-6D
120000
MW-8D
110000
100000
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWast\\5535\\graphs\\5_K.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Potassium Data for Deep Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
130000
MW-5D
MW-6D
120000
MW-8D
110000
100000
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWast\\5535\\graphs\\5_K.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Potassium Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
NYSDEC CLASS
35000
GA STANDARD
MW-5S
MW-6S
MW-8S
30000
25000
20000
15000
10000
5000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_MN.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Magnesium Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
70000
MW-5D
MW-6D
MW-8D
60000
50000
40000
NYSDEC CLASS
GA STANDARD
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/21
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_MN.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Magnesium Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
9000
MW-5S
MW-6S
8000
MW-8S
7000
6000
5000
4000
3000
2000
1000
NYSDEC CLASS
GA STANDARD
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_MN.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Manganese Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
14000
MW-5D
MW-6D
MW-8D
12000
10000
8000
6000
4000
2000
NYSDEC CLASS
GA STANDARD
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/21
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_MN.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Manganese Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
160000
MW-5S
150000
MW-6S
MW-8S
140000
130000
120000
110000
100000
90000
80000
70000
60000
50000
40000
30000
20000
10000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_NA.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Sodium Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
240000
MW-4D
MW-5D
220000
MW-6D
MW-8D
200000
180000
160000
140000
120000
100000
80000
60000
40000
20000
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_NA.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Sodium Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
40
MW-5S
MW-6S
MW-8S
30
20
10
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_Nit.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Nitrate Data for Shallow Monitoring Wells
E
Legend
MW-1D*
MW-3D
MW-4D
13
MW-5D
MW-6D
12
MW-8D
11
10
9
8
7
6
5
4
3
2
1
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\3753\\graphs\\5_Nit.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Nitrate Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
300
MW-5S
MW-6S
MW-8S
250
200
150
100
50
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_sul.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Sulfate Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
1100
MW-5D
MW-6D
1000
MW-8D
900
800
700
600
500
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5_sul.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Sulfate Data for Deep Monitoring Wells
E
Legend
MW-1S*
MW-3S
MW-4S
1100
MW-5S
MW-6S
1000
MW-8S
900
800
700
600
500
400
300
200
100
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\5S_TDS.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Total Dissolved Solids Data for Shallow Monitoring Wells
E
Legend
MW-1D*
MW-3D
MW-4D
1600
MW-5D
MW-6D
MW-8D
1400
1200
1000
800
600
400
200
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
J:\\_HazWaste\\5535\\graphs\\5_TDSa.grf
*=only upgradient well
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
Historical Total Dissolved Solids Data for Deep Monitoring Wells
E
Legend
MW-1S*
MW-3S
50
MW-4S
MW-5S
40
MW-6S
30
MW-8S
20
14
12
10
8
6
4
2
0
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\5535\\graphs\\S_TVOC.grf
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Total VOCs Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
30
MW-5D
MW-6D
MW-8D
20
16
14
12
10
8
6
4
2
0
1/1/091/1/101/1/111/1/121/1/131/1/141/1/151/1/161/1/171/1/181/1/191/1/201/1/211/1/22
Sample Collection Date
*=only upgradient well
J:\\_HazWaste\\3753\\graphs\\5_TVOC.grf
Town of Southold Landfill
Figure
6155 Cox Lane, Cutchogue, NY
E
Historical Total VOCs Data for Deep Monitoring Wells
Legend
MW-1S*
MW-3S
MW-4S
20
MW-5S
MW-6S
MW-8S
16
12
8
4
0
*=only upgradient well
J:\\_HazWaste\\3175\\graph\\5S_clbz.grf
Sample Collection Date
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Chlorobenzene Data for Shallow Monitoring Wells
Legend
MW-1D*
MW-3D
MW-4D
16
MW-5D
MW-6D
MW-8D
12
8
4
0
*=only upgradient well
J:\\_HazWaste\\3753\\graphs\\5D_clbz.grf
Sample Collection Date
Town of Southold Landfill
Appendix
6155 Cox Lane, Cutchogue, NY
E
Historical Chlorobenzene Data for Deep Monitoring Wells