vvEPA
United States
Environmental Protection
Agency
Water and Power Authority
St. Croix, USVI
Lead in Drinking Water
Sequential Sampling Study Report
December 2023
-------
Contents
EXECUTIVE SUMMARY 2
BACKGROUND 3
Lead and Copper Rule 4
Iron 5
SEQUENTIAL SAMPLING 5
Sequential Sampling Procedure 6
RESULTS 7
Sample Site #1 7
Sample Site #2 8
Sample Site #3 8
Sample Site #4 9
Sample Site #5 10
Sample Site #6 10
Sample Site #7 11
Sample Site #8 12
Sample Site #9 12
Sample Site #10 13
Sample Site #11 14
CONCLUSIONS 15
Source of Lead 15
Sequential Sampling Results Interpretation 15
RECOMMENDATIONS 16
For Residents 16
For WAPAand DPNR 18
APPENDICES 19
Appendix A: Sequential sampling QAPP, protocol and residential outreach flyer.
Appendix B: Data report for sequential sampling study.
WAPA St. Croix, USVI Sequential Sampling Report 1
-------
EXECUTIVE SUMMARY
In September 2023, the US Virgin Islands Water and Power Authority (WAPA), led an effort to sample
drinking water at distribution meters in St. Croix, USVI in coordination with the US Virgin Islands
Department of Planning and Natural Resources (DPNR), the University of the Virgin Islands (UVI) and the
Environmental Protection Agency Region 2 (EPA), to investigate complaints of increased incidents of red
and brown water. While sampling at distribution meters is not consistent with the Safe Drinking Water
Act (SDWA) Lead and Copper Rule (LCR) compliance sampling methods, and the sampling approach was
not designed to target lead or copper, the distribution meter sampling identified very elevated levels of
lead and copper that could potentially impact public health. Out of an abundance of caution, EPA
recommended that residents not consume water from the WAPA distribution system until an
investigation could be conducted to collect drinking water samples from household taps, and identify
the likely source(s) of lead and ways to mitigate it.
In November 2023, EPA led an investigative sequential sampling effort in coordination with WAPA,
DPNR and UVI, to collect water samples from household taps at a subset of the homes served by the
distribution meters sampled in September 2023 where elevated lead and copper levels were detected,
and that regularly use WAPA water. The sequential sampling data indicates that there are sources of
lead in the premise plumbing and around the water distribution meters, including brass connections.
Actions should be taken to address the lead to prevent exposure. However, the high levels of lead found
during the distribution meter sampling are likely not reaching household taps.
Based on EPA's review of water quality data provided by the Seven Seas facility, WAPA and DPNR, the
finished drinking water from WAPA's Richmond storage tank1 is not a source of elevated lead and/or
copper levels prior to entering the distribution system. However, the finished water is corrosive per the
chloride, sulfate, conductivity and pH data, and EPA has concluded that the corrosivity of the finished
drinking water from the WAPA Richmond storage tank is causing lead to leach from lead-containing
plumbing components. Longer periods of water stagnation (i.e., more than 6 hours), and the high levels
of iron in the water system can contribute to increased levels of lead in the water. Low water pressure
and unoptimized corrosion control treatment are also contributing factors.
It is important to note that while there is no safe level of lead exposure, lead contamination of drinking
water can result from corrosion of the leaded plumbing materials. As a result, EPA established a
treatment technique-based action level of 15 ppb for lead under the Lead and Copper Rule (LCR) rather
than a maximum contaminant level (MCL). The lead action level is a measure of the effectiveness of the
corrosion control treatment in the water system. The action level is not a health-based standard for
establishing a safe level of lead in a home.
EPA recommends that before the "do not drink" recommendation is lifted for WAPA customers, that
WAPA develop and implement an outreach/education campaign so that customers know how to take
steps to protect themselves from lead exposure (e.g., cleaning aerators, flushing water at the tap, and
replacing internal household plumbing fixtures). WAPA, and DPNR as the SDWA primacy agency, should
concurrently take other actions including, but not limited to,
1 The Seven Seas facility pumps seawater treated via reverse osmosis to the WAPA Richmond storage tank where
chlorine and corrosion control treatment are added, prior to the water being pumped into the WAPA distribution
system.
WAPA St. Croix, USVI Sequential Sampling Report
2
-------
1) assessing and optimizing corrosion control treatment and designating optimal water quality
parameters;
2) returning to standard monitoring under the LCR (e.g., conducting broader and more frequent
sampling);
3) replacing lead-containing plumbing components and connections owned by WAPA; and
4) developing and implementing a low-flow flushing program to flush water mains.
These recommendations are consistent with recommendations for other water systems in similar
situations nationwide.
BACKGROUND
The WAPA public water system on St. Croix treats up to 3 million gallons of potable water per day. Since
2012, WAPA has been under a long-term agreement with Seven Seas Water Corporation to produce
drinking water using reverse osmosis. The Seven Seas facility treats seawater by reverse osmosis and
then pumps the water to the WAPA Richmond storage tank where chlorine and corrosion control
treatment, a poly/ortho-phosphate blend, are added prior to the finished water entering the
distribution system. The distribution is primarily gravity-fed, flowing east to west.
WAPA supplies drinking water to approximately 35-40% of the population on the island of St. Croix.
WAPA's distribution system on St. Croix consists of 170 miles of interconnected piping of varying age,
size, and materials. A large portion of the distribution system is over 60 years old and has deteriorating
infrastructure, the majority of which consists of ductile iron pipe. In August 2023, WAPA's potable water
was impacted by sargassum, odors and increased discoloration of red and brown tints resulting from
water being shut off and on for rehabilitation projects and a reduced flushing schedule due to drought
conditions.
WAPA developed a sampling plan to determine the source and chemistry of red and brown water in
September 2023, following complaints from customers about the discolored water. WAPA, DPNR and
UVI, along with EPA's support, conducted sampling on September 28-29, 2023. Two sampling teams
collected samples at 66 locations across St. Croix, primarily at distribution meters, with a focus on areas
where red and brown water complaints originated. To collect the water samples, the subsurface meter
box was opened, the WAPA shut-off valves were closed, the meters were removed and brass fittings and
a brass hose bib type faucet (sample collection apparatus) were attached to the threaded connection
where the meter was located. After the hose bib faucet was installed, the WAPA valve was opened and
two samples were collected. The first was either a first draw or a sample collected after a one-minute
flush. The second was a 3- to 5-minute flush sample. The WAPA valve was then closed, the sampling
collection apparatus was removed, the distribution meter was reattached and the valves were re-
opened. The difference in when and how the first and second samples were collected was the result of
inconsistent practices between the two separate sampling teams.
UVI conducted the microbiological analysis (total coliform, E. coli) of the samples. WAPA conducted
microbiological analysis (coliform and E. coli) as well as field analysis of secondary drinking water
analytes (pH, conductivity, turbidity, chlorine residual, phosphate and iron). The EPA Region 2 laboratory
in Edison, NJ conducted the primary drinking water metals analysis (lead, copper, antimony, arsenic,
barium, beryllium, cadmium, chromium, mercury and selenium).
WAPA St. Croix, USVI Sequential Sampling Report
3
-------
The sample results from WAPA confirmed high levels of iron, which is the primary cause of the red and
brown water. The sample results from EPA's laboratory indicated very elevated levels of lead and copper
in samples collected at 36 of the 66 locations. Lead concentrations in the "first" samples at these 36
locations exceeded EPA's 15 ppb lead action level, with results ranging between 16 ppb to over 20,000
ppb. Fifteen (15) of the first samples also exceeded EPA's copper action level of 1,300 ppb, with results
ranging between 1,320 and 137,000 ppb. Lead concentrations fell below EPA's 15 ppb action level in all
but two of the "second" samples (i.e., after a 3 to 5-minute flush). There were no copper concentrations
above the action level in any of the flush samples.
EPA received the final laboratory metals analysis of samples indicating elevated lead and copper levels
on October 12, 2023. EPA notified WAPA and DPNR on October 13, 2023 of the exceedances. Per the
Water Infrastructure Improvements for the Nation (WIIN) Act requirements under Section 1414 (c) of
the SDWA, EPA, primacy agencies and public water systems are required to notify and provide
information to homes and communities once EPA receives drinking water data that indicates a
household has drinking water levels above EPA's lead action level. WAPA issued a broad notification to
its customers on October 14, 2023, and reported to EPA that they had notified specific affected
residents the following week.
WAPA began flushing their distribution system in the neighborhoods where elevated lead and copper
levels were detected. After revising their September sampling protocol to specify first draw and 10 to
15-minute flush samples be collected following flushing and a stagnation period of 8 to 18 hours, WAPA
and DPNR, with EPA oversight, resampled for lead and copper at 37 distribution meters on October 21,
2023. All 37 first draw samples from the October 21st sampling had lead concentrations above the lead
action level, ranging between 18 ppb and 1,600 ppb. Six (6) first draw samples had copper
concentrations above the copper action level, ranging between 1,400 ppb and 6,000 ppb. None of the
flush samples had concentrations above the lead or copper action levels.
While sampling at distribution meters is not consistent with SDWA LCR compliance sampling methods,
and the initial purpose of the sampling was not designed to target lead or copper, the distribution meter
sampling identified very elevated levels of lead and copper that could potentially impact public health.
Out of an abundance of caution, EPA recommended that residents not consume water from the WAPA
distribution system until an investigation could be conducted to collect drinking water samples from
household taps, and identify the potential source(s) of lead and ways to mitigate it.
Lead and Copper Rule
The LCR establishes a treatment technique-based action level (AL) for lead at 0.015 mg/L (15 ug/L or 15
ppb), and an action level for copper at 1.3 mg/L (1,300 ug/L or 1,300 ppb). The LCR requires systems to
monitor drinking water at customer taps; the number of monitoring sites depends on the size of the
system (i.e., number of people served). If lead and/or copper concentrations exceed their action level in
more than 10% of customer taps sampled, the system must undertake additional actions to control
corrosion. If the action level for lead is exceeded, the system must also inform the public about steps
they should take to protect their health and may have to replace lead service lines under their control.
WAPA is subject to the LCR and must submit a report confirming compliance to DPNR. WAPA collects 30
compliance samples on a reduced monitoring (triennial) schedule for the LCR. WAPA did not exceed the
LCR action level for the most recent round of sampling conducted in September 2023.
WAPA St. Croix, USVI Sequential Sampling Report
4
-------
Prior to 2012, WAPA used desalination to treat seawater. WAPA did not re-assess their corrosion control
treatment or designate optimal water quality parameters when they transitioned from desalination to
reverse osmosis.
There are no known lead service lines in the WAPA distribution system, though a lead service line
inventory has not been conducted yet. There are, however, lead-containing plumbing components such
as brass valves, curb stops, fixtures and other components (e.g., connecting service lines to mains and to
distribution meters).
iron
EPA established National Secondary Drinking Water Regulations (NSDWRs) that set non-mandatory
water quality standards for 15 contaminants, including iron. EPA does not enforce these "secondary
maximum contaminant levels" (SMCLs), nor are these contaminants considered to present a risk to
human health at the SMCL. SMCLs are set to give public water systems guidance on removing these
chemicals to levels that are below what most people will find to be noticeable and to assist public water
systems in managing their drinking water for aesthetic considerations, such as taste, color, and odor. If
these contaminants are present in drinking water at levels above their SMCLs, the contaminants may
cause the water to appear cloudy or colored, or to taste or smell bad. This may cause people to stop
using water from their public water system even though the water is safe to drink. The SMCL for iron is
300 ppb.
Water that is corrosive to iron can cause damage to water system equipment, including but not limited
to distribution system pipes which can corrode to the point of failure (either by a broken pipe or
restricted water flow). The presence of excess iron in the drinking water can also cause reduced
effectiveness of treatment for other contaminants.2
SEQUENTIAL SAMPLING
Sequential sampling, also referred to as profile sampling, is an investigative and comprehensive water
sampling protocol which uses successive water samples of established volumes to apportion lead
sources in water. Sequential sampling is based on the relationship between a water "sample" of a
specific volume and the volume of water associated with the "distance" of the plumbing, depending on
the pipe diameter (internal volume). The samples together create a lead profile of the plumbing from
the sampled faucet all the way to the water main. The intent of sequential sampling is to identify and
compare the relative lead contribution of different plumbing materials which may be sources of lead in
water, including brass fixtures.
To determine the source(s) of lead in the WAPA distribution system, EPA identified private homes as
potential candidates for sequential sampling that 1) were one of the 363 homes where elevated lead
levels were detected at the distribution meters during the October 21, 2023 sampling event; and 2)
regularly used WAPA water a minimum of two out of the most recent 4 months (between June/July and
2 https://www.epa.gov/sdwa/secondai^-drinking-water-standards-guidance-niiisance-chemicals
3 Although 37 distribution meters were sampled on October 21, 2023, WAPA reported to EPA that they excavated
the service line of the location with the highest lead and copper levels on November 3, 2023 and replaced lead-
containing components. As a result, only 36 homes were potential sequential sample site locations.
WAPA St. Croix, USVI Sequential Sampling Report
5
-------
October) based on WAPA water consumption records. Using these criteria, 13 of the 36 homes were
identified as potential sequential sampling locations.
UVI began outreach to residents in the 13 homes beginning on October 30, 2023, to collect preliminary
information about their water use (e.g., confirm use of WAPA water from the distribution system) and
infrastructure, and gauge their interest in participating in the sequential sampling study. On November
1- 4, 2023, EPA, WAPA and DPNR visited each of the homes to conduct a linear pipe measurement
survey to estimate the length and diameter of the service line and interior plumbing to determine the
water volume needed to perform sequential sampling. WAPA and DPNR representatives led the team to
each of the homes, located the water distribution meter, and confirmed the location of the water main.
A walk-through of the water line started from the water main to the water distribution meter, followed
by the plumbing to the home, then to the kitchen faucet. Observations were made of the material of the
water distribution meter, the inlet and the outlet of the meter, and the diameter of the service
connection. Measurements were taken of the distance between the water main and the water
distribution meter, the meter and the home, and the home4 and the kitchen faucet. If the homeowner
was not present, the distance from the home to the kitchen faucet was estimated.
During the survey, EPA also communicated with the residents to confirm their contact information (e.g.,
names, phone numbers). The residents were given a flyer with contact names and numbers to schedule
their sequential sampling appointment, and instructions about how to prepare for a sequential sampling
event. If a resident was absent, the flyer was left at their home.
Eleven (11) of the 13 homes were found to be eligible and agreed to participate in the sequential
sampling study.
Sequential Sampling Procedure
Sequential sampling occurred between November 7-9, 2023. EPA led the single-sampling team, which
included participants from WAPA and DPNR. The targeted sample volume for each home was
determined based on the measurements collected during the linear pipe measurement survey
conducted November 1-4, 2023. The 11 homes participating in the sequential sampling study were
instructed to stagnate their water for a minimum of 6 hours prior to their sampling visit.
Certified High-Density Polyethylene (HDPE) bottles were pre-labeled and numbered using standardized
nomenclature (FRB- Field Reagent Blank, Sample "SS01" first, Sample "SS02" second, etc.) prior to entry
into a home. A field reagent blank sample was collected each day. The first two samples in each home
were 125 milliliters (mL) to isolate the contributions from the faucet and different short sections of
household, or premise, plumbing. The remaining samples were each 1 liter (L). AIL sample corresponds
to approximately 20 feet of pipe. Larger samples are often collected because as the plumbing moves
away from the faucet it typically becomes more uniform, depending on the location.
Prior to sample collection, water usage within a home and the stagnation period were confirmed with
the resident. The condition of the kitchen faucet and underlying fixtures and components were
documented. Residents advised the sampling team on the direction of hot/cold handles to ensure cold
4 "Home" refers to the home's external service line entry point (actual or approximate, depending on the location).
WAPA St. Croix, USVI Sequential Sampling Report
6
-------
water was sampled. Sample bottles (two 125-ml, and the 1-L bottles) were placed near the kitchen
faucet in sequential order (e.g., SS01, SS02, SS03.... SS08, etc.). The "SS01" bottle was placed under the
kitchen faucet, opening the cold water slowly to fill the first two 125-ml sample bottles. While the first
bottle was being filled, the next bottle (SS02) was moved under the faucet quickly. Samples were
collected without shutting off the water in between bottles and minimizing spillage between samples.
Once the first two samples were collected, the flow was increased (maximum flow) to collect the 1-L
bottle "SS03" and continued for the following 1-L sample bottles. The sample date and time were
recorded on the EPA Chain-of-Custody Form. Electrical tape was wrapped around the sample lids to the
sample bottles to prevent the lid from coming loose during shipment. The samples were placed inside
the cooler with double bags and sealed. The cooler was wrapped with strapping tape and shipped via
United Parcel Services (UPS) to the U.S. EPA Region 2 Laboratory in Edison, New Jersey for analysis.
It should be noted that EPA's Office of Research and Development (ORD) attended the sequential
sampling event to collect particle samples from 10 of the 11 homes' faucet aerators. Once all the
sequential sampling bottles were collected at a home ORD would remove the faucet aerator and collect
any particles present. The results of that study will be shared in a separate report.
RESULTS
Of the 119 sequential samples collected at the 11 homes, three samples at three different homes5 had
lead concentrations above the EPA's 15 ppb lead action level. Two of those samples were from the first
draw close to the household tap (28.8 ppb and 18.4 ppb lead); the third was from water closer to the
distribution meter (23.2 ppb lead). The two first-draw results of water closest to the tap indicate the
lead is likely from the plumbing within the faucet or aerator. The third result from water closer to the
distribution meter indicates the lead is likely from the plumbing components around the distribution
meter.
Sample Site #1
The first of 11 homes was sampled on November 7, 2023 after a 12.5 hour stagnation period. During the
linear pipe measurement survey, brass piping was observed connecting the main to the meter, and PVC
piping was observed from the meter to the home and the home to the household tap. Samples were
collected from the kitchen faucet of the home. A total of 9 samples were collected, along with a field
reagent blank since this was the first sampling location on the first day of sampling. The first two
samples were collected in 250 mL bottles (but were only 125 mL in volume) per the QAPP addendum in
the Appendix of this report. No lead or copper concentrations above the action levels were detected at
this location. The highest lead concentration was observed in the very first sample (13.9 ppb), indicating
the faucet and plumbing immediately around the faucet are likely contributing lead to drinking water.
The iron SMCL was exceeded in the third sample (469 ppb).
5 WAPA notified the 3 homes with elevated lead levels by mail per the WIIN Act requirements.
WAPA St. Croix, USVI Sequential Sampling Report
7
-------
Table 1: Sample Site #1 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-02
125
13.9
135
269
SS02-Grab/2311021-03
125
5.76
41.5
132
SS03-Grab/2311021-04
1000
10.9
89.4
469
SS04-Grab/2311021-05
1000
4.56
56.3
183
SS05-Grab/2311021-06
1000
2.44
28.5
149
SS06-Grab/2311021-07
1000
1.83
23.9
126
SS07-Grab/2311021-08
1000
1.71
16.3
121
SS08-Grab/2311021-09
1000
1.34
14.5
120
SS09-Grab/2311021-10
1000
2.88
28.3
108
Sample Site #2
The second of 11 homes was also sampled on November 7, 2023 after a 22 hour stagnation period.
During the linear pipe measurement survey, brass piping was observed connecting the main to the
meter, and PVC piping was observed from the meter to the home and the home to the household tap.
Corrosion was observed on the brass pipe connection under the kitchen sink. Samples were collected
from the kitchen faucet of the home. A total of 10 samples were collected. The first two samples were
collected in 250 mL bottles (but were only 125 mL in volume) per the QAPP addendum in the Appendix
of this report. No lead or copper concentrations above the action levels were detected at this location.
Table 2: Sample Site #2 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-ll
125
4.55
21.4
180
SS02-Grab/2311021-12
125
1 U
4.11
80.6
SS03-Grab/2311021-13
1000
1 U
4.28
107
SS04-Grab/2311021-14
1000
1 U
5.58
141
SS05-Grab/2311021-15
1000
1 U
3.98
101
SS06-Grab/2311021-16
1000
1 U
3.51
85.4
SS07-Grab/2311021-17
1000
1 U
3.41
74.2
SS08-Grab/2311021-18
1000
1.07
3.37
54
SS09-Grab/2311021-19
1000
1 U
3.95
72.4
SS10-Grab/2311021-20
1000
1 U
4.27
99
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #3
The third of 11 homes was the final sample site on November 7, 2023. At this sample site, the resident
stated that they used WAPA water to wash their hands prior to the sampling team's arrival. As a result,
WAPA St. Croix, USVI Sequential Sampling Report
8
-------
this sample site was potentially compromised. The data (i.e., the low copper concentrations in the first
7-8 samples), appear to support that the sample site was compromised.
During the linear pipe measurement survey, piping from the main to the meter was submerged under
water, and PVC piping was observed from the meter to the home and the home to the household tap.
Corrosion was observed from kitchen sink pipe. Samples were collected from the kitchen faucet of the
home. A total of 10 samples were collected. The first two samples were collected in 250 mL bottles (but
were only 125 mL in volume) per the QAPP addendum in the Appendix of this report. No lead or copper
concentrations above the action levels were detected at this location.
Table 3: Sample Site #3 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron (Fe)*
SS01-Grab/2311021-21
125
1 u
1 u
50 U
SS02-Grab/2311021-22
125
1 u
1 u
50 U
SS03-Grab/2311021-23
1000
1 u
1.08
50 U
SS04-Grab/2311021-24
1000
1 u
1.04
50 U
SS05-Grab/2311021-25
1000
1 u
1 U
50 U
SS06-Grab/2311021-26
1000
1 u
1.01
50 U
SS07-Grab/2311021-27
1000
1.6
2.71
50 U
SS08-Grab/2311021-28
1000
1 U
1.72
50 U
SS09-Grab/2311021-29
1000
1.15
3.89
51
SS10-Grab/2311021-30
1000
1 U
2.5
66.6
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #4
The fourth of 11 homes was sampled on November 8, 2023 after a 6.5 hour stagnation period.
During the linear pipe measurement survey, copper piping was observed connecting the main to
the meter, and PVC piping was observed from the meter to the home and the home to the
household tap. Samples were collected from the kitchen faucet of the home. Leaking was
observed from the base of the kitchen sink, and the water was tinted brown. Water pressure
dropped during sampling.
A total of 9 samples were collected, along with a field reagent blank since this was the first sampling
location on the second day of sampling. The first two samples were collected in 250 mL bottles (but
were only 125 mL in volume) per the QAPP addendum in the Appendix of this report. A lead
concentration above the action level was detected in the first sample (28.8 ppb), indicating that the
faucet and plumbing immediately around the faucet are likely contributing lead to drinking water. No
copper concentration above the action level was detected at this location. The iron SMCL was exceeded
in all 9 samples.
It is important to note that this sample site had an in-line sediment filter on the exterior of the home
between the WAPA water line and the household tap that could not be removed. A leak (a small,
persistent drip) was observed at a pipe connection immediately downstream of the filter.
WAPA St. Croix, USVI Sequential Sampling Report
9
-------
Table 4: Sample Site #4 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-32
125
28.8
147
2710
SS02-Grab/2311021-33
125
1 U
4.65
425
SS03-Grab/2311021-34
1000
1.39
8.09
755
SS04-Grab/2311021-35
1000
4.33
31.8
1170
SS05-Grab/2311021-36
1000
1 U
3.36
508
SS06-Grab/2311021-37
1000
1 U
3.87
322
SS07-Grab/2311021-38
1000
1 U
3.19
537
SS08-Grab/2311021-39
1000
1 U
2.59
484
SS09-Grab/2311021-40
1000
1 U
2.38
443
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #5
The fifth of 11 homes was also sampled on November 8, 2023 after an 8 hour stagnation period. During
the linear pipe measurement survey, brass piping was observed connecting the main to the meter, and
PVC piping was observed from the meter to the home and the home to the household tap. Samples
were collected from the kitchen faucet of the home. A total of 7 samples were collected. The first two
samples were collected in 250 mL bottles (but were only 125 mL in volume) per the QAPP addendum in
the Appendix of this report. No lead or copper concentrations above the action levels were detected at
this location.
Table 5: Sample Site #5 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-41
125
2.26
9.21
52.4
SS02-Grab/2311021-42
125
1.56
5.68
63.6
SS03-Grab/2311021-43
1000
1.92
6.21
61.3
SS04-Grab/2311021-44
1000
1.53
5.73
63.8
SS05-Grab/2311021-45
1000
1.57
6.62
61.2
SS06-Grab/2311021-46
1000
1.88
8.35
62
SS07-Grab/2311021-47
1000
1.66
7.75
62.1
Sample Site #6
The sixth of 11 homes was also sampled on November 8, 2023 after a stagnation period of
approximately 12 hours. During the linear pipe measurement survey, brass piping was observed
connecting the main to the meter, and PVC piping was observed from the meter to the home and the
home to the household tap. Samples were collected from the kitchen faucet of the home. A total of 13
samples were collected. The first two samples were collected in 250 mL bottles (but were only 125 mL in
volume) per the QAPP addendum in the Appendix of this report. No lead or copper concentrations
WAPA St. Croix, USVI Sequential Sampling Report
10
-------
above the action levels were detected at this location. However, the iron SMCL was exceeded in the 7th,
11th and 12th samples (316 ppb, 326 ppb and 343 ppb, respectively).
Table 6: Sample Site #6 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-48
125
1 u
7.31
260
SS02-Grab/2311021-49
125
1 u
5.12
260
SS03-Grab/2311021-51
1000
1 u
7.14
243
SS04-Grab/2311021-52
1000
1.9
8.11
268
SS05-Grab/2311021-53
1000
1 U
6.04
280
SS06-Grab/2311021-54
1000
1 U
5.45
295
SS07-Grab/2311021-55
1000
1 U
5.21
316
SS08-Grab/2311021-56
1000
1 U
8.04
289
SS09-Grab/2311021-57
1000
1.45
19.8
268
SS10-Grab/2311021-58
1000
1.04
12.2
290
SSll-Grab/2311021-59
1000
1 U
7.03
326
SS12-Grab/2311021-60
1000
1 U
6.83
343
SS13-Grab/2311021-61
1000
1.77
24.2
293
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #7
The seventh of 11 homes was the final sample site on November 8, 2023 after a stagnation period of 11
hours. During the linear pipe measurement survey, brass piping was observed connecting the main to
the meter, and PVC piping was observed from the meter to the home and the home to the household
tap. Samples were collected from the kitchen faucet of the home. A total of 8 samples were collected.
The first two samples were collected in 250 mL bottles (but were only 125 mL in volume) per the QAPP
addendum in the Appendix of this report. A lead concentration above the action level was detected in
the first sample (18.4 ppb), indicating that the faucet and plumbing immediately around the faucet are
likely contributing lead to drinking water. There is also a slight increase in lead concentration in the last
sample (9.64 ppb), potentially indicating the presence of leaded brass components around the water
meter. No copper concentrations above the action level were detected at this location.
Table 7: Sample Site #7 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron(Fe)
SS01-Grab/2311021-62
125
18.4
77.1
96.7
SS02-Grab/2311021-63
125
6.73
107
110
SS03-Grab/2311021-64
1000
8.02
50.5
155
SS04-Grab/2311021-65
1000
5.03
36.9
235
SS05-Grab/2311021-66
1000
5.02
29.8
181
SS06-Grab/2311021-67
1000
3.14
24.4
147
SS07-Grab/2311021-68
1000
2.88
23.4
154
WAPA St. Croix, USVI Sequential Sampling Report
11
-------
SS08-Grab/2311021-69
1000
9.64
23.8
148
Sample Site #8
The eighth of 11 homes was sampled on November 9, 2023 after a stagnation period of about 12 hours.
During the linear pipe measurement survey, brass piping was observed connecting the main to the
meter, and PVC piping was observed from the meter to the home and the home to the household tap.
Samples were collected from the kitchen faucet of the home. Corrosion was observed on the valve of
the kitchen sink. A total of 9 samples were collected, along with a field reagent blank since this was the
first sampling location on the third day of sampling. The first two samples were collected in 250 mL
bottles (but were only 125 mL in volume) per the QAPP addendum in the Appendix of this report. No
lead or copper concentrations above the action levels were detected at this location.
Table 8: Sample Site #8 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron (Fe)*
SS01-Grab/2311039-02
125
3.4
87.9
50 U
SS02-Grab/2311039-03
125
1.37
179
50 U
SS03-Grab/2311039-04
1000
1.7
240
50 U
SS04-Grab/2311039-05
1000
1.32
420
50 U
SS05-Grab/2311039-06
1000
1 U
465
50 U
SS06-Grab/2311039-07
1000
1 U
793
50 U
SS07-Grab/2311039-08
1000
1 U
637
50 U
SS08-Grab/2311039-09
1000
1 U
993
50 U
SS09-Grab/2311039-10
1000
1 U
60.3
50 U
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #9
The ninth of 11 homes was also sampled on November 9, 2023 after a stagnation period of
approximately 4 days (96 hours). During the linear pipe measurement survey, brass piping was observed
connecting the main to the meter, and PVC piping was observed from the meter to the home and the
home to the household tap. Samples were collected from the kitchen faucet of the home. Periods of
brown water were observed. A total of 16 samples were collected. The first two samples were collected
in 250 mL bottles (but were only 125 mL in volume) per the QAPP addendum in the Appendix of this
report. A lead concentration above the action level was observed in the 14th sample (23.2 ppb). The
elevated lead concentrations between the 13th and 15th sample (12.6, 23.2, and 7.28 ppb) may be
indicative of lead leaching from brass fixtures/fittings around the meter location. No copper
concentrations above the action level were detected at this location. The iron SMCL was exceeded in the
13th-16th samples (2,620 ppb, 5,750 ppb, 1,510 ppb and 466 ppb, respectively).
It is important to note that the resident was confused with the direction of the hot and cold-water
handle. The sampling team reported that water samples felt warm to the touch and hot water was likely
sampled (home had a tankless hot water heater).
WAPA St. Croix, USVI Sequential Sampling Report
12
-------
Table 9: Sample Site #9 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron (Fe)*
SS01-Grab/2311039-ll
125
1.04
124
50 U
SS02-Grab/2311039-12
125
2.34
51
58.6
SS03-Grab/2311039-13
1000
1 U
98.5
51.6
SS04-Grab/2311039-14
1000
2.96
315
110
SS05-Grab/2311039-15
1000
4.35
185
117
SS06-Grab/2311039-16
1000
2.53
113
105
SS07-Grab/2311039-17
1000
1.64
103
70.5
SS08-Grab/2311039-18
1000
1.74
115
79.7
SS09-Grab/2311039-19
1000
1.8
128
125
SS10-Grab/2311039-20
1000
1.53
86.8
141
SSll-Grab/2311039-21
1000
1.16
64.7
96.5
SS12-Grab/2311039-22
1000
1.11
69.2
81.4
SS13-Grab/2311039-23
1000
12.6
432
2620
SS14-Grab/2311039-24
1000
23.2
950
5750
SS15-Grab/2311039-25
1000
7.28
251
1510
SS16-Grab/2311039-26
1000
2.49
107
466
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample Site #10
The tenth of 11 homes was also sampled on November 9, 2023 after a 14 hour stagnation period. During
the linear pipe measurement survey, brass piping was observed connecting the main to the meter, and
PVC piping was observed from the meter to the home and the home to the household tap. Samples
were collected from the kitchen faucet of the home. Water was observed to be lightly brown. A total of
13 samples were collected. The first two samples were collected in 250 mL bottles (but were only 125
mL in volume) per the QAPP addendum in the Appendix of this report. No lead or copper concentrations
above the action levels were detected at this location. However, the iron SMCL was exceeded in all but
the 9th sample.
Table 10: Sample Site #10 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)*
Copper (Cu)
Iron(Fe)
SS01-Grab/2311039-27
125
2.89
3.64
301
SS02-Grab/2311039-28
125
1.57
3.37
310
SS03-Grab/2311039-29
1000
1.54
3.6
431
SS04-Grab/2311039-30
1000
1 U
2.88
339
SS05-Grab/2311039-31
1000
1 U
2.62
315
SS06-Grab/2311039-32
1000
1 U
2.77
327
SS07-Grab/2311039-33
1000
1 U
3.03
386
SS08-Grab/2311039-34
1000
1 U
2.74
321
SS09-Grab/2311039-35
1000
1 U
2.51
287
WAPA St. Croix, USVI Sequential Sampling Report
13
-------
SS10-Grab/2311039-36
1000
1 U
2.48
314
SSll-Grab/2311039-37
1000
1 U
2.19
325
SS12-Grab/2311039-38
1000
1 U
2.6
424
SS13-Grab/2311039-39
1000
1 U
2.67
398
* U indicates the analyte was not detected at or above the Laboratory Reporting Limit. Number to the left
of the "U" is the Laboratory Reporting Limit for that analyte.
Sample
The eleventh and final home was also sampled on November 9, 2023 after a 9 hour stagnation period.
During the linear pipe measurement survey, brass piping was observed connecting the main to the
meter, and PVC piping was observed from the meter to the home and the home to the household tap.
Samples were collected from the kitchen faucet of the home. Brown water was observed. A total of 15
samples were collected. The first two samples were collected in 250 mL bottles (but were only 125 mL in
volume) per the QAPP addendum in the Appendix of this report. No lead or copper concentrations
above the action levels were detected at this location. However, the iron SMCL was exceeded in all but
the second sample.
Table 11: Sample Site #11 Lead, Copper and Iron Results (ug/L or ppb)
Sample ID/Lab ID
Sample Volume (mL)
Lead(Pb)
Copper (Cu)
Iron(Fe)
SS01-Grab/2311039-40
125
3.35
26.9
327
SS02-Grab/2311039-41
125
1.28
8.36
283
SS03-Grab/2311039-42
1000
1.76
12.6
381
SS04-Grab/2311039-43
1000
2.11
14.5
478
SS05-Grab/2311039-44
1000
2.56
20.9
627
SS06-Grab/2311039-45
1000
2.42
21.9
577
SS07-Grab/2311039-46
1000
2.26
19
533
SS08-Grab/2311039-47
1000
2.47
21.9
709
SS09-Grab/2311039-48
1000
2.06
18.8
528
SS10-Grab/2311039-49
1000
2.11
19.7
657
SSll-Grab/2311039-50
1000
2.24
22.8
889
SS12-Grab/2311039-51
1000
2.16
21.7
742
SS13-Grab/2311039-52
1000
2.47
23.1
923
SS14-Grab/2311039-53
1000
3.81
30.7
1090
SS15-Grab/2311039-54
1000
4.87
26.9
782
WAPA St. Croix, USVI Sequential Sampling Report
14
-------
CONCL
Source of Lead
EPA has analyzed i) the sequential sampling data; ii) WAPA water quality data (both for the Richmond
storage tank finished water and from the September and October sampling events); and iii) service line
inventory information collected by WAPA after excavating service lines following the September and
October sampling events. EPA has also discussed WAPA's treatment process and distribution system in
detail with WAPA and DPNR. Based on our understanding of this information, EPA concludes that the
primary source of lead in the WAPA distribution system are the various lead-containing brass plumbing
components.
The corrosivity of the finished water from WAPA's Richmond storage tank (e.g., high pH, low alkalinity,
high chloride and low sulfate), the lack of optimized corrosion control treatment and the unique
circumstances WAPA has, and is currently facing, are causing lead to leach from these brass
components, particularly when the water is stagnant for more than approximately 6 hours.
The unique circumstances WAPA is facing refers primarily to conditions that result in the water being
stagnant for extended periods of time (i.e., more than approximately 6 hours). Water is an expensive
commodity on St. Croix, and the recent drought conditions have reduced the frequency of WAPA
flushing its distribution system. Some areas of the island served by WAPA regularly experience low
water pressure, which may be a result of uncovered storage tanks.
Finally, most homes in St. Croix have a household rainwater catchment system and cistern. While
several homes also have a connection to WAPA water, the homes may utilize their cistern water, versus
the more expensive WAPA water, when feasible. As a result, WAPA water may sit stagnant for as long as
several months before a resident uses it. These issues can increase the contact time between the WAPA
water and brass components, leading to more lead leaching into the water.
These issues are aggravated by the high levels of iron found in the distribution system, the source of
which is aging iron ductile water mains. The corrosive water causes the leaching of iron from the
plumbing materials (i.e., ductile iron pipe) that then impacts water quality. High levels of iron in the
water and on the pipe walls can react with phosphate, which could otherwise react with lead. Iron can
also sorb lead, particularly after a long stagnation, as well as react with chlorine. Low phosphate levels,
and low chlorine residual, were observed by EPA and DPNR in areas of the distribution system
downstream of the treatment facilities.
Sequential Sampli ults Interpretation
The results of the sequential sampling study demonstrate that there are sources of lead in the premise
plumbing and around the WAPA distribution meters. The two first draw samples with lead
concentrations above the action level at Sample Sites #4 and #7 of 28.8 ppb and 18.4 ppb, respectively,
indicate the source of the lead is primarily the household plumbing, faucet and/or aerator. The iron
SMCL was exceeded in all samples at Sample Site #4, and none of the samples at Sample Site #7.
WAPA St. Croix, USVI Sequential Sampling Report
15
-------
The third lead concentration above the action level at Sample Site #9 occurred in the 14th sample (23.2
ppb), around the water distribution meter and its associated brass plumbing components. This home
had a stagnation period of approximately 4 days, and elevated levels of iron in almost all samples. These
results indicate that if water is left stagnant for more than approximately 6 hours, the lead leaching from
the brass plumbing components around the WAPA distribution meter may result in elevated lead levels
at a household tap.
The data from the sequential sampling study also indicates that the levels of lead reaching household
taps are not as high as the very elevated levels of lead observed during the September and October
sampling events at distribution meters. Collecting drinking water samples at distribution meters is not
typical, but the data from the sequential sampling study was needed to ensure public health protection.
Since sequential sampling was only conducted at homes where distribution meters were previously
sampled, and the distribution meter sampling caused a disturbance to the homes' service lines, the lead
levels observed in these 11 homes may be higher than homes where distribution meters were not
sampled. Disturbance to service lines can cause lead-containing plumbing components and materials
(e.g., scale inside pipes) to become unstable and thus increase lead levels in the water for a period of
time. Since specific data demonstrating potentially lower lead levels is not available, and only 11 homes
were sampled out of many more active WAPA customers6 (i.e., the sample size was small), the WAPA
customer-specific recommendations provided in the next section of this report should apply to the
entire island to best protect public health.
RECOMMENDATIONS
Based on the information provided in this report, the lead sources would need to be addressed through
one or more mitigative measures, to reduce risk of exposure to lead in drinking water at the tap. Many
of these recommendations would also be effective in reducing iron levels.
EPA recommends that before the "do not drink" recommendation is lifted for WAPA customers, that
WAPA develop and implement an outreach/education campaign so that customers know how to take
steps to protect themselves from lead exposure. WAPA, and DPNR as the SDWA primacy agency, should
concurrently take other actions as described below.
F< dents
1. Clean faucet aerators.
Many kitchen and bathroom taps have an aerator as part of the faucet assembly. Aerators serve to
introduce air into the water flow and help with water conservation. Aerators are not intended to
remove inorganic contaminants; however, screens that are part of the aerator may trap particulate
matter or debris within the faucet. These particulates can include lead-bearing particulate matter
that can accumulate from the physical corrosion of lead-containing materials in household pipes or
following a disturbance in the piping such as replacement of premise plumbing. Aerators should be
regularly cleaned to remove particulate matter and prevent lead-bearing particulates from leaching
lead into drinking water.
6 The sequential sampling study was not designed to be a statistically representative study.
WAPA St. Croix, USVI Sequential Sampling Report
16
-------
2. Flush your water at tap prior to consuming water.
Before drinking, flush your home's pipes by running water at the tap. Flushing involves opening taps
and letting the water run to remove water that has stagnated in pipes, faucets and/or fixtures.
Flush a minimum volume of 250 mL for water that has been stagnant for approximately 6 hours.
Flush until you reach water from the main when water that has been stagnant for more than
approximately 6 hours. Residents can approximate 250 mL at their taps using a measuring cup or
bottled-beverage container where a 250 mL (~8 oz) volume is indicated, by filling the container and
dumping the water prior to consuming water from the tap.
The amount of time to flush water to the main will depend on the volume of water in the service
line from the main to the tap. For a rough estimate of an appropriate flush volume, residents can
measure the length of their service line from the water main to their kitchen faucet. The volume of
water will depend on the diameter of the service line, typically 3/4-inch for a single-family home7.
Calculate volume by multiplying the area of a cross-section of the pipe (i.e., the area of a circle) by
the estimated length of the service line. Convert this number to gallons or liters and then use a
container(s) of known size, (e.g., a milk gallon jug, a 1-liter soda bottle) and run the tap to fill the
containers until the calculated flush volume is reached.
Flushing can also be used after disturbances caused by water main work, repairs and service line
replacement activities. These disturbances can cause lead particulate release and scale disruption in
pipes.
3. Filter your water to provide additional protection.
Point of use or pitcher water filters can be used, either alone or in combination with flushing, to
reduce exposure in water used for drinking and cooking. Flushing your water prior to filtering can
maximize the effectiveness of the filter and provide additional protection.
Research shows that properly operated NSF/ANSI- 53 filters certified to remove lead and NSF/ANSI-
42 filters certified to remove particulate are very effective in reducing lead in drinking water. The
particulate filters are also effective in reducing iron in water. Filters must be properly certified,
installed, and operated and maintained to remove lead from drinking water.
4. Install lead-free premise plumbing.
Lead in drinking water may result from lead plumbing or a wide array of lead containing pipes,
fittings and devices made of leaded brass/bronze alloys, like kitchen faucets or water fountains,
water distribution meters, valves, elbows, or ferrules. Lead containing solder joining copper pipes
can also contribute to lead in water. For example, older brass and solder that pre-date the 1986 Safe
Drinking Water amendments that established requirements for "lead-free" plumbing materials, may
contribute to lead exposure. As of 2011, the Safe Drinking Water Act (SDWA) established an
updated definition for "lead free" as a weighted average of not more than 0.25 percent lead
calculated across the wetted surfaces of a pipe, pipe fitting, plumbing fitting, and fixture and not
containing more than 0.2 percent lead for solder and flux. When replacing your plumbing, ensure
that the new plumbing materials comply with the current "lead free"8 requirements and
7 Residents should contact WAPA for more specific information about the diameter of their service line, as well as
the location of the water main relative to their home.
8 «• •\ v \ , • 5 v. i\ - 5 I- H ,• , • - " • i 5 i i I \ i i i. \ V
WAPA St. Croix, USVI Sequential Sampling Report
17
-------
NSF/ANSI/CAN 61 certified plumbing components. This certification requires the products to comply
with NSF/ANSI/CAN 372, the standard that incorporates the "lead free" requirement.
For V MR
1. Develop and implement an outreach/education plan to inform WAPA customers about potential
sources of lead in drinking water and how to mitigate exposure.
The plan should include outreach and education on how to flush effectively and on proper
operations and maintenance of point of use filters. If WAPA provides filters, printed instructions
should be provided to customers that receive a filter(s). The outreach/education plan can include
print media, videos, flyers, television ads, etc.
2. Return to routine monitoring under the Lead and Copper Rule (LCR).
Return to routine monitoring and collect compliance samples from at least 60 sites for at least two
6-month periods in accordance with the LCR. As part of this effort, WAPA, with approval from DPNR,
should conduct a review of the existing LCR compliance sample pool and update the sample site
selections as needed.
3. Optimize corrosion control treatment in the water supply and designate optimal water quality
parameters.
Conduct additional monitoring and/or studies to assess the current corrosion control treatment
(CCT), adjust or update the existing CCT and designate optimal water quality parameters. Corrosion
control treatment is added to water to prevent lead from leaching from plumbing components.
Ensuring the corrosion control treatment is as effective as possible will help to reduce lead
exposure. Returning to routine LCR compliance sampling will also help assess the effectiveness of
the corrosion control treatment.
4. Develop and implement a low-flow flushing program to prevent long stagnation times in the
water mains.
Develop a flushing program to remove stagnant water, reduce water age, and ensure that corrosion
control treatment flows to all areas of the distribution system. The flushing program can focus on
the whole distribution system or select areas of the system that have low water use, such as dead-
end water mains. The flushing plan should be designed to achieve specific water quality goals. As
this program is developed, flushing procedures and maps should be updated. WAPA customers
should be informed about flushing activities.
Given that water stagnated for more than approximately 6 hours can contribute to increased levels
of lead in the water (i.e., the water is in contact longer with plumbing components that may contain
lead), developing a flushing program to keep water moving through mains should help reduce lead
and iron levels.
5. Inspect and rehabilitate storage tanks.
Conduct internal inspections of storage tanks and rehabilitate all storage tanks as needed to
improve pressure in the distribution system, remove sediment, and allow a more effective flushing
program.
WAPA St. Croix, USVI Sequential Sampling Report
18
-------
6. Continue to replace infrastructure with lead-free components.
Continue to implement infrastructure replacements including ductile iron distribution mains, brass
corporation stops, curb stops, meters, and backflow devices from mains to residences. Ensure that
all the replacement components meet the "lead free" definition. These infrastructure replacements
will remove potential sources of lead and should reduce lead levels at the tap.
APPENDICES
Appendix A: Sequential sampling QAPP, protocol and residential outreach flyer.
Appendix B: Data report for sequential sampling study.
WAPA St. Croix, USVI Sequential Sampling Report
19
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Quality Assurance Project Plan (QAPP)
For USEPA Region 2 LSASD
Sequential Drinking Water Sampling for Lead and Copper in the US Virgin Islands
October 2023
Project Field Lead(s):
Project Manager:
QA Officer:
Laboratory Manager:
^e0 sr-%
£
O
\
s8z
^ PRO"^
ro
I
o
THUAN TRANDigitallysignedbyTHUANTRAN
Date: 2023.11.04 12:01:10 -04'00'
Thuan Tran, LSASD- MAB-MOS Date
Digitally signed by PHILIP
PHILIP COCUZZA COCUZZA
Date: 2023.11.04 03:40:01 -04'00'
Phil Cocuzza, Supervisor, LSASD-MAB-MOS Date
Digitally signed by CAROL
TAROI I YNFS LYNES
V_/ \nWL L. I I ML J Date: 2023.11.03 17:36:06
-04'00'
Carol Lynes, Branch Supervisor, LSASD-MAB
John Bourbon. Director. LSASD-LB
Drinking Water Program Office:
Date
11/3/23
Date
11/3/23
Christine Ash, Deputy Director WD
Date
Effective Date - last signature on page
Page 1 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Table of Contents
3 Contact/Distribution List (A3)4 4
4 Project/Task Organization (A4) 4
5 Program Definition/Background (A5) 5
5.1 Problem Definition 5
5.2 Background 6
6 Project/Task Description (A6) 6
7 Quality Objectives and Criteria for Measurement Data (A7) 7
7.1 Precision 7
7.2 Bias 7
7.3 Representativeness 7
7.4 Comparability 8
7.5 Completeness 8
7.6 Sensitivity 8
8 Special Training Needs/Certification (A8) 8
9 Documents and Records (A9) 9
9.1 Document/Record Control 9
9.2 Document Storage 9
10 Sampling Process Design Requirements (Bl) 9
10.1 Design of the sampling 9
10.2 Sampling locations and frequencies 10
11 Sampling Method (B2) 11
12 Sampling Handling & Custody (B3) 14
13 Analytical Methods (B4) 15
14 Analytical Quality Control (B5) 16
15 Testing, Inspection, Maintenance & Calibration Requirements 16
15.1 Instrument/Equipment Maintenance/Equipment Calibration and Frequency (B6, B6) 16
16 Data Management 16
16.1 Laboratory Data Management 16
16.2 Data Management Summary 16
17 Assessments & Response Actions (CI) 17
Page 2 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
18 Reports to Management (C2) 17
18.1 Sample Results 17
19 Data Review, Verification and Validation Methods (D1 and D2) 17
Attachments
Attachment 1 Chain of Custody
Attachment 2 USVI SEQUENTIAL SAMPLING RESIDENT QUESTIONNAIRE
Attachment 3 Sequential Sampling Flyer for Residents
Attachment 4 Faucet Aerator Particulate Collection After Sequential Water Sampling
References
1. Benton Harbor, Ml - Filter Performance Screening and Assessment Study - Quality Assurance
Project Plan. Revision Number: 0. November 5, 2021.
2. EPA Office of Research and Development - Center for Environmental Solutions and Emergency
Response Water Infrastructure Division/Drinking Water Management Branch - Drinking Water
Sampling Protocols for Benton Harbor Water Study. Version 2.5 12/10/21.
Tables
Table 1: Recipients of the Approved QAPP and Any Subsequent Revisions 4
Table 2: Project Timeframe 7
Table 3: Water Analysis Methods, Federal Maximum Contaminant Levels (MCLs) 16
Figures
Figure 1: Organizational Chart 6 5
Page 3 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
3. Contact/Distribution List (A3)
The following reviewers will receive a copy of the QAPP and will be advised of and receive a copy of
any subsequent revisions.
Table 1: Recipients of the approved QAPP and any subsequent revisions.
Email
Tran.Thuan@epa.gov
cocuzza.phil@epa.gov
bourbon. j ohn @epa. gov
lvnes .carol@epa. gov
ash.christine@epa.gov
Contact
Name
Thuan Tran
Phil Cocuzza
John Bourbon
Carol Lynes
Christine Ash
Responsibility Location
Project Lead
Project
Manager
R2 Laboratory
Director
QA Officer
DW Program
Office
2890 Woodbridge Ave,
Edison. NJ 08837
2890 Woodbridge Ave,
Edison. NJ 08837
2890 Woodbridge Ave,
Edison. NJ 08837
2890 Woodbridge Ave,
Edison. NJ 08837
290 Broadway
New York, NY
10007
Phone
732-321-4455
732-321-4478
732-321-6706
731-321-6760
212-637-4006
4. Project/Task Organization (A4)
The duties of key individuals are as follows:
• Project Leader(s) (PLs) - Are responsible for the preparation and revisions to this
Quality Assurance Project Plan (QAPP). The PL is responsible for project planning,
procurement of supplies and equipment, oversight of sampling teams, documenting field
activities, documenting deviations from the QAPP. Field Sampling Summary Report and
Final Project Report.
• Project Manager (PM) - is responsible for general project coordination, oversight, and
to maintain documents listed in the Reports to Management. Documentation. Records
sections, under the Project Manager section.
• R2 Laboratory Manager- is responsible for supervising laboratory analyses to be
performed in the US EPA Region 2 Laboratory ("Laboratory"). This includes oversight
of all QA requirements in the Laboratory, including data review and qualification of the
data. The Laboratory Manager is responsible for providing the analytical results,
including the qualifiers in the Laboratory Data Report ("LDR") for determining any
limitations to the usability of the analytical data, and providing the LDR to the Project
Manager.
• The Quality Assurance Officer (QAO) is responsible for reviewing and approving the
QAPP and working with the project leaders to resolve any quality assurance issues that
may arise during the project.
• The Sampling Team staff are responsible for ensuring that field activities are conducted
in accordance with the QAPP and relevant SOPs or protocols (if any) and documenting
any deviation from the QAPP. SOPs or Protocols.
Page 4 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Figure 1: Organizational Chart
5. Program Definition/Background (A5)
5.1 Problem Definition
This study is being undertaken to determine the extent and location of lead and copper
contamination on the island of St. Croix within the VIWAPA distribution system, and any other
contaminants of interest. Once the source or sources are determined, remediation options can be
discussed for implementation. VIWAPA will be replacing its aging infrastructure with FEMA
funding, but this may take decades to complete, an intermediate solution is being sought out.
The resulting data will be shared with EPA experts. USVI territory and local governments, and
VIWAPA. The maximum contaminant level goal (MCLG) for lead is 0 ppb. An action level
(AL) of 0.015 mg/L for lead, and 1.3 mg/L for copper, based on 90th percentile level of tap water
samples is in place under the federal Lead and Copper Rule. Exceeding these action levels
requires a drinking water system take certain actions.
The initial round will be comprised of sequential sampling at the tap of up to 13 homes on St.
Croix which were found to have elevated levels of lead and copper in the distribution line from
previous conducted by VIWAPA and VIDPNR-DEP.
Page 5 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
5.2 Background
The USVI territory has been dealing with "Red" drinking water on the islands of St. Thomas. St.
John, and St. Croix. It is believed the main cause of this is aging infrastructure, which is
predominantly comprised of ductile iron which has been rusting, resulting in secondary
contamination. Previous sampling and studies have been done in St. Thomas, including an EPA
report in 2017, resulting in remediation recommendations, some of which have been successful.
In August and September of 2023, residents in St. Croix were actively protesting their Territorial
Government regarding their drinking water quality. These protests prompted sampling by
VIWAPA, with support from the University of the Virgin Islands (UVI), and overseen by the
VIDPNR-DEP. in September of 2023. EPA R2 provided technical assistance to USVI agencies,
and the R2 Laboratory analyzed the samples for metals. The samples collected to assess the red
water were not collected for LCR compliance, nor did the sampling protocol follow LCR
sampling requirements; however, the results of this analysis indicated levels of lead and copper,
exceeding their respective action levels. The highest lead level reported was above 20,000 ppb.
which lead to the initiation of this study.
Based on the information from the VIWAPA distribution line sampling, the high levels of lead
detected were from first draw samples, but the lead concentrations decreased dramatically to
below detectable levels after 3 to 5 minutes of flushing. However, even after flushing, some
samples still contained elevated lead levels. The sampling locations with elevated lead after
flushing are included in the sampling pool consisting of the 13 homes mentioned above. It is
believed that the highest levels were due to stagnant water which has been in the distribution
pipes when homes and businesses turn off their WAPA service line in-takes. Residents will do
this because they may receive their water from an alternate source that can include private
residential cisterns and local water delivery trucks. It is also suspected that the overall problem
was exasperated by a drought, which decreased water levels throughout the system, and an influx
of sargassum seaweed, which caused additional discoloration and a distinct odor. The
distribution system on St. Croix begins with purchasing Reverse Osmosis (RO) water from
"Seven Sea's Water". VIWAPA then chlorinates the water and injects a blended ortho- and
polypoly-phosphate product called. "SeaQuest" for corrosion control.
6. Project/Task Description (A6)
As stated previously, this study will be comprised of sequential sampling in up to 13 homes. The selection
is based on VIWAPA water consumption data. VIWAPA data indicated that water was used at these 13
homes during the last 2 to 4 months. The decision was made to ensure we collected samples
representative of VIWAPA water actively being used in the home to accurately assess the potential
sources of lead in the VIWAPA distribution system and service lines. These homes were also selected
from the list of 35 homes with the highest levels of lead and copper contamination as determined from the
results of the VIW APA distribution line sampling at select meter locations. Any additional sampling, if
necessary, will follow the same procedures found in this QAPP. This current EPA lead and copper
sampling event will have 1 EPA team of 3. with the team lead by an experienced sampler. More teams
will be sent if needed.
After sampling, the bottles will be placed in a cooler for storage, and shipped to the EPA R2 Laboratory
in Edison. NJ for analysis at the end of each day of sampling. Details of sampling procedures and
analysis can be found in Sections 10 and 11. The samples will not be required to be placed on ice and
will be preserved at the Edison laboratory upon arrival.
Page 6 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Specialized training or equipment will not be necessary, only standard sampling methods and equipment
described in Sections 10 and 11.
No secondary data will be used for this study.
This QAPP, and other sampling and laboratory analysis QA procedures will be strictly adhered to. from
sampling, to final data reporting.
A study schedule can be found below in Table 2 for the initial round of sampling. Any other subsequent
sampling will follow a similar schedule.
Table 2: Project Schedule*
Activity
Time Frame
Write and approve QAPP
Octobe r/N o vein be r 2023 ~ 2 weeks
Confirm Site Sampling Locations
Octobe r/No vein be r 2023 ~ 1 week
Notifv residents and give instructions
Octobe r/No vein be r 2023 ~ 1 week
Receive Sample Bottles
October 2023 ~ 1 weeks
Residential Sampling
November 2023 ~ 3 to 5 davs
Ship Samples to the Lab
November 2023 <2 davs
Lab Processing/Preservation/Analvsis/Report
November 2023 ~ 3 weeks
Report writing with data reporting
December 2023 ~ 2 weeks
Potential Follow up
TBD
* The schedule may be slightly altered due to logistical constraints and travel, prior to sampling,
homeow ner availability, shipping, laboratory staffing, etc.
7 Quality Objectives and Criteria for Measurement Data (A7)
The data quality objects for this study are based on standard sampling procedures of EPA R2 MAB-MOS,
as well as with assistance from the EPA ORD-CESER Water Infrastructure Division.
7.1 Precision
The EPA laboratory will perform replicate analysis of known samples to assess method
precision. The acceptance criterion for replicate analysis is a maximum of 20 percent (%)
Relative Percent Difference, unless otherwise specified by standard operating procedures (SOP).
7.2 Bias
The EPA Region 2 laboratory will perform analysis of Laboratory Fortified Blanks to assess
accuracy/bias. The acceptance criterion for accuracy for the results is to be within plus or minus
10% recovery of the know n value, unless otherw ise specified by EPA laboratory SOPs.
7.3 Representativeness
The selection of sample locations, analyses, and sample sizes is designed to identify potential
sources of lead throughout the plumbing network at each of the 13 residences (if accessible), and
to collect samples that are representative of concentrations of lead and copper. Additional
metals analysis parameters will be reported out to CESER for the area of St. Croix which had
highest concentrations of lead, based on the VIWAPA distribution line sampling results.
7.4 Comparability
Page 7 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
The analytical methodology for this project will be the same standard analytical methodology
used to assess the VIWAPA distribution lines sampling project for concentrations of lead and
other water quality parameters. This is further described in Sections 13 and 14.
Sampling results for sampling activities in this QAPP are intended to identify the potential
sources of lead in water from the distribution line just beyond the meter, the water meter, the
home service line, under sink plumbing and the faucet with aerator or screen attached.
The sampling results for these sampling activities are not intended to be used to assess
compliance with the lead and copper action levels in EPA's Lead and Copper Rule.
7.5 Completeness
Samples will be collected from the identified sampled housing community, with the goal that one
hundred percent (100%) of samples will be analyzed and reported. However, some samples may
not be valid due to unforeseen field sample collection issues, shipping delays, or laboratory
issues. If any of these unforeseen incidents occur, those impacted sample results would be clearly
identified.
7.6 Sensitivity
EPA laboratory reporting limits (RL) for the determination of metals and water
quality parameters meet the objectives of this study. See Section 13 for method reporting limits.
8. Training Needs/ Certification (A8)
The sampling team leads are trained and experienced in the collection of drinking water samples as
required by US EPA QA field activities procedure. In addition, the sampling personnel will be familiar
with EPA approved drinking water and sequential sampling procedures. The experienced team leads have
been peer to peer trained. When needed, additional training will be provided.
US EPA sampling personnel are required to have completed the 24-hour health and safety training per
US EPA Order 1440.2 prior to engaging in field sampling. The sampling personnel listed in this QAPP
have been trained in accordance with Order 1440.2 and OSHA 1910.120. Documentation is maintained in
FedTalent.
Laboratory personnel designated to analyze the samples have successfully completed required
demonstrations of capability for the methods used. The Laboratory is a NEL AP Accredited Laboratory,
accredited for drinking water for inorganic contaminants, including metals.
The Laboratory Manager*s) have responsibility for correction of all deficiencies in their laboratory
program.
Page 8 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
9. Documents and Records (A9)
The final QAPP will be provided to the appropriate project personnel by email as detailed in the
distribution list. As the plan is updated, each person on the distribution list will be sent an email with the
most current document. The most current date of revision will be included in the document name and in
the header of the document. The most current document will also be maintained on Microsoft Teams
located in the project file folder.
The chain-of-custody (Attachment 1), and any other sampling-related forms shall be maintained in their
original form by the authorized sample collector(s). Information from sampling personnel will be
maintained in project folder. These documents and data storage databases are backed up on secure
servers. Sampling personnel will submit all original forms to Water Divisions Drinking Water Program
Office. Analytical results will be submitted by the US EPA Region 2 Laboratory by uploading results
directly into US EPA LIMS. This database has a secure backup and ease of retrieval for data.
The format for all data recording will be consistent with the requirements and procedures used for data
assessment, verification and validation described in this QAPP. Files generated according to applicable
standard operating procedures (such as raw data, results of QC checks, problems encountered, etc.) will
be documented and reported to the Project QA Officer and Laboratory Director.
All communications regarding study plan changes or refinements, such as changes to sites, staff,
parameters, etc. will be filed in the Microsoft Teams or SharePoint site by the Program Manager.
9.1 Document/record control
The recording media for the project will be a combination of paper and electronic means to
document site conditions. Data gathered using paper will be recorded using pen. and changes to
such data records will be made by draw ing a single line through the error with an initial by the
responsible person. Similar methods will be used for electronic data recording.
Agency management. Program Managers, and Quality Assurance Managers will approve updates
to the QAPP. as needed. The Project Manager shall retain copies of all management reports,
memoranda, and all correspondence between team members. Retention of records should
emphasize any deviations from the signed QAPP. including the rationale for those changes.
9.2 - Document storage
The Program Office Manager will maintain a central project directory, uploaded to the Microsoft
Teams or SharePoint site, that will act as a repository for all data collected or generated as part of
this project.
All files will be retained by US EPA according to the US EPA records retention policy.
10. Sampling Process Design Requirements (Bl)
General sampling design is described below. EPA will utilize the consumption of water data and sample
results collected by VIW A PA to identify the 13 houses to sample. VIWAPA and VIDPNR-DEP will
Page 9 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
provide the predetermined locations for sample collection and the University of the Virgin Islands (UVI)
will coordinate with the residents to acquire their approval and provide instructions.
EPA's Region 2 lab in Edison. NJ will be used for analysis of samples.
10.1 - Design of the sampling
EPA will be sampling a minimum, of 13 residential units (homes) based on the analytical results
from the distribution line sampling performed by VIWAPA with VIDPNR. The homes selected
for this sampling event were chosen as described above, due to their proximity and connections to
the distribution line that provides WAPA water., and homeow ner willingness to allow access and
follow pre-sampling instructions.
EPA Region 2 in consultation with ORD will be using a sequential sampling protocol to attempt
to capture more resolution of contamination. This design is based on the sampling volumes and
numbers of samples collected to represent various segments of the distribution, service, interior
plumbing, and faucet lines. Due to the unavailability of information on the plumbing (i.e. length
and inside diameter of the service line piping in to the home) the volume of water in the pipe is
estimated. A pre-sampling reconnaissance was performed to estimate the length and inside
diameter of the service lines, but where it can't be confirmed, it will be estimated and noted. The
number of samples collected at each home will vary due to the design of the sequential sampling
procedure. Collected water samples will be preserved at the R2 Edison Laboratory using
appropriate methods, as outlined in Table 3, Section 13.
10.2 - Sampling locations and frequencies
Samples will be collected from up to 13 residential faucet taps. The purpose of sequential
sampling is to collect samples at different locations in the piping from the faucet tap back to the
main to determine potential sources of lead and copper. The residents will be notified and
provided with instructions to prepare for the sampling in their homes. See Attachment #2. In
addition, as part of an overall outreach effort, these homeowners and the general public will
receive a flyer on how to protect themselves from lead in drinking water, and how to participate
in the sampling effort (Attachment #3).
Note: After the sequential sampling is completed, the EPA Office of Research and Development
(ORD). will be conducting their own study of collecting faucet aerator particulate (Attachment
#4). This QAPP will not cover the protocols and QA procedures of that study.
Pre-Sampling Procedures
• The University of the Virgin Islands will reach out to residents of the selected homes. A
SEQUENTIAL SAMPLING RESIDENT QUESTIONNAIRE (Attachment #2) will contain
questions regarding what their water source is, if they grant permission to enter their home
and take samples, and instructions on what to do to prepare, such as not using their water for
a period of 6 hours. The UVI will contact the homeowners to complete this questionnaire and
attempt to set up preferred sample times at each residence. This information will be shared
with EPA R2 via SharePoint so sample scheduling can begin.
o The sample collectors are trained Region 2 Scientists or Engineers.
Page 10 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
o If needed, the US EPA Region 2 representative will provide an explanation of the
sampling to the resident and will answer any questions about sampling techniques.
• Scheduling Sampling: A proposed date/time of sampling must meet the follow ing criteria:
o Sufficient time allowed for the sampler to access the home and complete the
sampling.
o Coordination with the sampler, homeow ner, or facility management,
o Coordination with the laboratory so they can schedule analysis and indicate when
results will be available.
Once the pre-sampling procedures have been completed, the PM will authorize samples to be taken and
direct the sampler. The PM will authorize follow up sampling events if necessary. Any changes must be
documented by the PM.
• Sampling Teams
o Two-person sampling teams will be utilized. This distributes the workload to
ensure attention to the QAPP and increases awareness to conditions and actions that
can adversely affect the quality of the sampling effort. Team members should watch
each other's movement and activities where possible and identify immediately if
someone is observed not following protocol,
o Distribute work for a two-person sample team.
o Each Team will have an experienced "Team Lead" and a second sampler to assist,
o It is recommended that the teams stay together while inside the homes, and not
separate into different rooms.
• Shipping
o The sample collectors/PL will schedule collection and shipping dates with a goal that
samples are received by the laboratory within 48 hours of having been collected.
This will be dependent on shipper schedules,
o Upon arrival, the samples will be preserved by the laboratory using appropriate
methods.
The samples do not need to be placed on ice upon completion of sample collection or during shipment to
the laboratory.
11. Sampling Method (B2)
Each sampling team will be led by a qualified team lead. The team lead is responsible for ensuring
sampling is conducted in a manner that is in accordance with this QAPP. In addition, the team lead is
responsible for making any adjustments to sampling in the field. If applicable, any changes are to be
documented in a field logbook.
All samples will be collected as sequential grab samples and according to the instructions within this
document and as provided in the attached/referenced SOPs and methods.
This section presents a step-by-step description of the sample containers, sample volume, preservation
requirements, and maximum holding time. New, certified clean wide-mouthed disposable sample
containers will be used for sample collection, and preservations steps will be performed by the laboratory.
Page 11 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Sampling teams shall conduct all sampling activities in a manner to minimize potential contamination and
cross-contamination of samples. The sampling team will thoroughly sanitize hands prior to wearing new
nitrile gloves at each sampling point in order to avoid exposure to pollutants and other chemical, physical,
and biological hazards, and to prevent cross-contamination of sampling team. The samplers will not touch
the insides of bottles or lids and caps during sampling.
All chemical data, field data, and data analysis methods and procedures in this document follow those
specified in EPA Method 200.8 and EPA 200.7.
Sequential Sampling Procedures
Water will be sampled for lead, copper and other metals using sequential sampling to determine either
lead sources in the home, and/or in the distribution system.
Instructions to be provided to residents bv UYI prior to sequential sampling event:
Flushing
1) At least 6 hours prior to scheduled sampling, go to the kitchen faucet and turn any
faucet-mounted filter to bypass/off mode (whole house filters or water softeners should
not be bypassed), then turn on the cold water (fully open, maximum flow) and let it run
for 5 minutes, then turn it off.
If the home is connected to cistern, it must be shut off and bypassed so only W A PA water
is being sampled.
2) Write dow n the date/time you turned the water off. If home has an accessible water
meter, please write dow n the meter reading after the flushing is completed.
* Flushing the system will allow the sequential sampling to provide representative
information on the sources of lead for each specific volume of water that is sampled later.
Stagnation
Do not use ANY water from the home plumbing, after completing the 5-minute flushing,
for the 6+ hours until the sampling visit. Specifically, do not shower, flush toilets, wash
laundry, or use other water taps. Any automatic law n sprinkler systems, ice makers,
plumbed humidifiers etc. should also be turned off. It may help to tape a sign in the
kitchen and bathrooms with a reminder not to use the water in case people forget. If water
is accidentally used, please notify PM or another representative.
Procedure for Samplers:
All bottles should be labeled and numbered using standardized nomenclature before entering the home,
and it is very important to collect them in order (Sample "-SS01" first. Sample "-SS02" second, etc.).
Samples will be taken from the kitchen sink cold-water faucet. Ensure any point-of-use filters on the
kitchen faucet are in bypass mode. Aerators, both on filter units and on taps without filters, are to remain,
and should be unaltered, during sampling. Only cold water is to be sampled. The sampler will ensure that
the hot/cold handles are not reversed.
Prior to entering the house, determine the targeted sample volume (provided by the PM, based on highest
sequential sample) and p re-label sample bottles using standardized nomenclature.
Page 12 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
- House identifier unique to the address (i.e., from a master list developed with a random number
generator provided to sampling teams on sampling schedule). This allows protection of personal
identification information in subsequent data analysis.
- Then "-SS" for sequential samples, and 3S-DS" for folly flushed samples (distribution system
background water quality samples).
- After the sample type ID (-SS,, or -DS) numbers will be used to indicate unique samples in the
order they are collected (e.g., 01, 02, 11).
Labeling Examples:
BLANK
Sample ID. 00 BLANK
Analysis: Lead (Pb) and Copper (Cu)in drinking water
I Sample Date: 1. IT. Plastic
Preservation: Lab. to preserve w/ HN03 to pH<2
ADDRESS
Sample ID: SS-01
Analysis: Lead (Pb) and Copper (Cu) in drinking water
Sample Date: 1. 125mL Plastic
*1 Preservation: Lab. to preserve w/ HN03 to pH<2
ADDRESS
Sample ID: SS-03
' Analysis: Lead (Pb) and Copper (Cu) in drinking water
Sample Date: 1. 1L Plastic
Preservation: Lab. to preserve w/ HN03 to pH<2
Drinking Water collection for sequential profile samples
1. The sampler shall record and pertinent information in a logbook. It is important to ensure no one has
used the water since the flushing occurred and at least 6 hours have passed from when the flushing was
completed.
2. Document the condition of the of the sample tap(s) and underlying fixtures and components noting any
corrosion or damage.
3. Place the sample bottles (two 125 ml., and the 1 L bottles) near the kitchen faucet in order by sample
number (e.g., -SS-01, -SS-02, -SS-03.... -SS-08, etc.) and ensure two samplers are ready to undertake the
sampling.
4. Remove the caps from all bottles so that they are ready to fill.
5. Record the beginning sample date/time on the EPA Chain-of-Custody form.
Page 13 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
6. Begin by placing the "-SS-01" bottle under the kitchen faucet and open the cold water slowly, to fill the
first two smaller volume bottles. While one bottle is filling, grab the next bottle (-SS-02) so that you are
ready to move it under the faucet quickly. Samples will be collected without shutting off the water in
betw een bottles and try to not let any water spill in between samples.
7. Once the bottle is filled to the neck, quickly place the "-SS02" bottle under the faucet.
8. When you start filling the first 1L bottle "-SS03" increase the flow so that the faucet is fully open
(maximum flow ) and continue at that flow rate to collect the remaining "-SS"" sample bottles allocated
for the site. The "-SS##" bottles should only be filled to the neck of the bottles. To the extent that the
maximum flow results in spilling or loss of water, the sampler will use a lower flow rate as necessary for
maximum water collection.
o For example - as noted above faucet flow is increased and samples "SS-03", "SS-04",
"SS-05", "SS-06"are collected ( 1L each, totaling 4 L for a cumulative sequential
volume of 4.25 L). then
9. One field blank will be collected each day of sampling.. The bottle is pre labeled and filled with milli-Q
water. Open the field blank bottle, remove lid then place back on and store in cooler with other samples.
Record the field blank collection in the logbook.
10. Leave the faucet running and record the date and time when the final sequential sample was filled on
the Chain of Custody form. Tightly place the caps back on all the filled sequential sample bottles.
11. After the final "SS" sample, collect the fully flushed "DS" sample as described above for background
water quality. Add this to the Chain of Custody form and turn off the faucet.
12. Sampling Handling and Custody (B3)
Sample handling and chain of custody procedures shall follow standard EPA Region 2 protocol. Any
deviations from approved sampling procedures will be documented in the field notes. Sample containers
shall be of QC class for the assessment of low-level analytes and be accompanied with a Certificate of
Authentication (COA). Sample containers are for one time use only. Containers will be assigned with a
unique number to each sample. Upon collection, each sample will be labeled and include project name,
sample ID. date/time, sampler initials, preservative, and analysis requested.
Sample Nomenclature
See procedures above.
Page 14 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
13. Analytical Methods (B4)
Tabic 3: Water Analysis Methods, Federal Method Detection Limits (MDLs)
Parameter
Matrix
Reference
Method/
Laboratory
SOP
Laboratory
Reporting
Limit
MDL
Sample Container
Sample*
Preservati
on
Holding Time
Lead
Water
US EPA
200.8
SOP C-l 12
Rev 4.0
1.0 (.ig/L
0.50
Ug/L
125-ml
polypropylene or
HOPE
1-L polypropylene
or HDPE
HNO3 to
pH<2
6 months (if
acid-preserved
within 14
days)
Copper
Water
US EPA
200.8
SOP C-l 12
Rev 4.0
1.0 (ig/L
0.5
Ug/L
125-ml
polypropylene or
HDPE
1-L polypropylene
or HDPE
HNO3 to
pH<2
6 months (if
acid-preserved
within 14
days)
Al, As. Ba.
Cd. Cr.
Mn, Ni.
Sb. V, Zn
Water
US EPA
200.8
SOP C-l 12
Rev 4.0
Al =20
ug/L; Cr.
Zn =2 .0
ug/L; As.
Ba. Cd. Mn,
Ni. Sb. V =
1.0 ug/L
MDLs
'A of
RLs
125-ml
polypropylene or
HDPE
1-L polypropylene
or HDPE
HNO3 to
pH<2
6 months (if
acid-preserved
within 14
days)
Ca. Fe. K,
Mg, Na
and Sn
Water
US EPA
200.7
SOP C-l 10
Rev 3.7
Ca. K and
Mg = 500
ug/L; Na =
1000 ug/L;
Fe = 50
ug/L; and
Sn = 10
ug/L
MDLs
Vz of
RLs
125-ml
polypropylene or
HDPE
1-L polypropylene
or HDPE
HNO3 to
pH<2
6 months (if
acid-preserved
within 14
days)
Page 15 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
14. Analytical Quality Control (B5)
The EPA has established protocols for the analysis of Quality Control (QC) samples with each
analytical batch of samples, generally defined as a maximum of twenty samples prepared within
a 24-hour period. All QC results must be assessed and evaluated on an on-going basis and QC
acceptance criteria must be used to determine the validity of the data.
For analytical testing for chemistry, the Laboratory includes positive control samples | Laboratory
Control Sample (LCS)| to evaluate the total analytical system. Negative control samples
(Method Blanks) are used to assess the preparation batch for possible contamination during the
preparation and processing steps. Specific control samples (Matrix Spikes) are used to indicate
the effect of the sample matrix and replicates (field replicate, matrix spike replicate. LCS
replicate) are performed to assess the precision of the results generated.
Specific information regarding the frequency, composition, acceptance criteria and corrective
actions are documented in the appropriate SOP for each analyte or analyte group.
15. Testing, Inspection, Maintenance & Calibration Requirements
15.1 Instrument/Equipment Maintenance/Equipment Calibration and Frequency (B6, B7)
Laboratory
All laboratory equipment is calibrated and maintained in accordance with
existing SOPs approved by the Laboratory which covers requirements under the US EPA
and State drinking water certification programs.
Field
There are no field instruments anticipated for this project.
16. Data Management (BIO)
Chain of Custodies (COC) will be checked for errors, verified, and cross checked with the field
documentation by the team leads prior to delivery to the lab.
16.1 Laboratory Data Management
The data will be maintained in an electronic format. The Laboratory will submit final LDR in
electronic copy for each sampling event to the EPA Project Manager and EPA Project Lead. All
material records will be maintained for the full duration of the project in accordance with the
US EPA R2 Records Retention Schedule.
16.2 Data Management Summary
The Project Manager will maintain the project file in a dedicated folder on the US EPA Region 2
Microsoft TEAMS or Share Point site. Internal access will be granted to Regional program
participants. The objective is to have a complete record of all decisions about modifications of
data collection, assessment, verification, validation, or interpretation between the QAPP signoff
and project report completion. Data received from the laboratory will be stored in USE PA "s
LIMS
Page 16 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
The data will be collected with the follow ing documents that will be completed for this project:
1. Chain of Custody Form: All pertinent sampling information will be recorded on a
sampling form, including (but not limited to): residential address, sample ID. sample
time, and any other pertinent observations. A digital copy of the Chain of Custody should
be emailed to the Program Manager and Laboratory. The hard copy of the Chain of
Custody will accompany the samples to the laboratory.
2. Laboratory reports
a. Laboratory reports will be sent to the PM
The documents may be converted into electronic versions. The PM will be responsible for
maintaining the data from the COC and Lab reports.
EPA Region 2 will consult with VIDPNR-DEP and VIWAPA to analyze the data and make
recommendations. The implementation of any recommendations is beyond the scope of this
project.
17. Assessments and Response Actions (CI)
No assessments will be performed on this project.
18. Project Assessment is not planned for this project. Reports to Management (C2)
EPA staff shall brief the management team upon completion of the project or if any concerns arise while
collecting samples with their immediate supervisor or the Project Manager. The Project Manager may
draft a single report, including a summary of activities performed, and laboratory results. The report may
also include a comprehensive QA section from both the laboratory and field, describing issues that impact
the quality of the data.
18.1 Sample Results
The laboratory will report lead, copper, and other metals for use by ORD for interpretation of data
resolution of the primary contaminant "lead". Laboratory reports will be sent to the Project
Manager the Deputy Director of EPA Region 2 Water Division. The Project Manager will notify
the WD of the results, along with recommendations.
19. Data Review, Verification and Validation Methods (D1 and D2)
The laboratories shall adhere to quality control measures as stated in Section 14.0 which includes the
references for each applicable SOPs. Data review of all Laboratory generated data is performed by a
second analyst not associated with the actual measurement operations for the given analytical batch, but
knowledgeable in the analytical processes employed. It is the responsibility of the reviewer to ensure that
all data generated are correct and of known and documented quality. Once the review is completed, the
reviewer will sign and date the appropriate QA/QC checklist according to the Laboratory's SOP. Any
limitations on the use of data. e.g.. data qualifiers, will be included in the final LDR.
Page 17 of 18
-------
USE PA
USVI Lead and Copper Drinking Water Sampling Study
October 2023 Revision 0
Data usability is determined by the Region 2 Program Office (Water Division). Addendums will be made
for site-specific situations. Any limitations on the use of data. e.g.. data qualifiers, will be included in the
final LDR.
Page 18 of 18
-------
US EPA REGION 2 LABORATORY
CHAIN OF CUSTODY/ FIELD DATA FORM
Attachment 2 : COC Form
Page _
of
.pages
SURVEY NAME & LOCALITY
PROGRAM: SF ~ :
Decision
Unit Code Y206
SITE ID
OPERABLE UNIT
RCRA ~ RCRA ENF ~
D210 D307
NPDESCI] SDWA ~
B304 C215
AM ~ CAA ~
B224 A305
PROJECT LEADER
PROGRAM RESULTS CODE
TSCA ~ OD ~ FIFRA ~
CRIMINAL ENF ~
Permit #:
o
o
CHECK IF
LAB ID/ FIELD ID
1*5 SPLIT
SO | SAMPLE
— | [i
DESCRIPTION & INSTRUCTIONS INCLUDING LOCATION,
ESTIMATED CONCENTRATIONS, SPECIAL REPORTING
LIMITS,
Res CL
Checked
w
(circle)
Collection Time
(24hr clock)
//////////////
Begin ¦ End
Collection
Date
mm/dd/yy
~ 012345678910
~ 0123456789
~
0123456789
~
~ 0123456789
~ 0123456789
~
_
~ 0123456789
~ 0123456789
~ 0123456789
~
0123456789
~
~ 012345678910
COMMENTS & SPECIAL REQUIREMENTS:
Preservative Added & Checked
0=ice 7=FAS
1=H2S04 pH<2 8=ZnAc
2=HN03 pH<2 9=NaOH pH>12
3=HCI pH<2 10=NH4CI
4=Na2S203
5=NaOH pH>9
6=Ascorbic Acid
I ime
Date
Person Assuming Responsibility for Sample(s):
Matrix:
A=aqueous F=multiphasic
B=aqueous (chlorinated) G=solvent
C=soil H=biota
D=sediment l=oil
E=sludge J=other
| Survey Complete? Y ~ N ~
Relinquished By:
Received By:
Relinquished By:
Received By:
Relinquished By:
Received By:
revised 10/25/2004
-------
10/30/23
USVI SEQUENTIAL SAMPLING RESIDENT QUESTIONNAIRE
Good day Mr./Ms. , this is Christina Chanes with the University of the Virgin Islands. I
am working in partnership with the Virgin Islands Water and Power Authority (WAPA), the Department
of Planning and Natural Resources (DPNR), and the US Environmental Protection Agency (EPA) to
conduct follow-up sampling to investigate lead in drinking water.
Your WAPA distribution meter was recently sampled to investigate the cause of red/brown water and
those samples showed elevated levels of lead and copper. We are asking to sample inside your home
because it will help us track down where the lead and/or copper is coming from so it can be addressed.
To make sure we get the most reliable data possible, I have some questions to help us figure out if your
home should be sampled further. If you don't know the answers to some of these questions and are OK
with EPA, WAPA, and DPNR visiting your home, we can come to your home to collect this information,
likely later this week.
Water Source
1. Do you use WAPA water?
> If yes, continue to next question.
2. Do you A) fill your cistern with WAPA water or B) is WAPA water connected to your household
plumbing?
> If B, continue to next question.
3. Do you switch between using water from your cistern, if you have one, and WAPA water?
> If yes, what water are you currently using?
¦ If WAPA water,
• When was the last time you switched between WAPA and your cistern?
Water Use
4. Which faucet do you typically use for drinking water and cooking?
5. Are you using a point-of-use or inline filter on the faucet?
6. Are any faucets or toilets in your home leaking?
Water Infrastructure
7. Do you know the approximate length of your water line (the pipe connecting your home to the
WAPA water main)?
8. Where does your water line connect to your home? Note that your water line connection may
be at the service line shut off.
9. Do you know approximate diameter of your service line (it may be visible where it connects to
your home)?
10. Have you had any recent construction or repairs done to your home that may have impacted the
water line?
If the resident does not have this information:
• Are you comfortable with the WAPA/DPNR/EPA team visiting your property to evaluate the
length of the water line and water connection if you are not there?
-------
10/30/23
Scheduling an Appointment
11. Would you be willing to let EPA collect water samples from your home? We have some
information/instructions to provide you with specific steps you'll need to follow prior to
sampling, including a period of time (at least 6 hours) where you cannot use the water in your
home.
> If yes, continue to next questions.
12. Would you prefer the samplers come November 7th, 8th or 9th?
13. Do you have a specific time of day that works better for you (remember water will need to be
stagnated - i.e., the water in your home cannot be used - for at least 6 hours)? It's OK if you
don't know at this time - we will be reaching out again to schedule a specific sampling time.
14. What is the best way to contact you to schedule an appointment and coordinate with the
sampling team?
15. Would you prefer that the samplers wear masks in your home?
16. Do you have a dog and/or fence on your property?
17. If you're comfortable with sharing, could you tell me the demographics of your household (e.g.,
age, race, ethnicity and gender?
-------
a O
Working with Residents to Get
.' o " * •* , * ?
Cleaner Water to St. Croix
What is EPA doing to protect
me from lead in water?
EPA's highest priority is protecting people from
exposure to lead in drinking water. A key step to
learning more about St. Croix's drinking water is to
conduct sequential sampling to determine if lead is
present in your home, and if it is coming from the
home's plumbing or water service line.
If You Participate in the
Sequential Sampling Study:
A sampling team from EPA, DPNR and WAPA will
come to collect samples from your household faucet
to test for lead and copper. Sampling should take
about one hour.
If you are interested in participating in the sequential
sampling study, please contact Christina Chanes at
340-344-6210.
When will I receive my
sampling results?
Your sampling results will take approximately two
weeks to analyze by EPA's laboratory. Your results
will be mailed to you as soon as possible.
What to do
f before a scheduled
J® sampling visit:
1. If you are using WAPA water for drinking
or cooking:
• Do not use any water in the home for at
least 6 hours before the scheduled visit.
This includes flushing toilets and turning
on any water faucet in the home.
2. If you are using cistern water for
drinking or cooking:
• Change over to WAPA water, turn on
all faucets and let the water run, or
flush, for 10 minutes.
• After flushing, do not use water for at
least 6 hours before the scheduled visit.
This includes flushing toilets and turning
on any water faucet in the home.
3. Expect a call a day before the
scheduled sampling to confirm the
appointment.
* If wafer is used 6 hours before the
scheduled visit, please contact Zeno Bain
at 571-289-9450 to reschedule.
More information is available on EPA's website at: https://www.epa.aov/vi/us-virain-islands-drinkina-water
-------
Faucet Aerator Particulate Collection After Sequential Water Sampling
Study Objective:
This study will evaluate the nature of particulate material trapped on residential faucet aerator screens
(or else aerators). Aerators are small but visible mesh screens screwed at the end of faucets that are
designed to shape the flow of water into multiple small and even streams. In the process, these mesh
screens can also accumulate/trap particulate material including lead-containing particles. Most faucet
models contain aerators, but not all. Data collected from this portion of the study can be used to
corroborate results obtained from the sequential sampling portion of the study, to identify the likely
source(s) of lead to residential drinking water (e.g., trace back to leaded brass or leaded solder) and be a
significant lead source itself. As particulate release has been observed in the system, there is a chance
that some particulate has accumulated in residential faucet aerators over time. Identification of the
composition of any aerator particulate can be combined with other data from the field study to better
understand the source(s) and potential mechanism for lead release. Please note that all sequential
drinking water sampling shall be conducted with the faucet aerators on and undisturbed. Aerator
removal for particle sampling should be the very last step, after everything else has been completed
given that lead aerator particles can be an important lead source.
Faucet Aerator Particulate Sampling Procedure
After all drinking water sampling has been conducted at the site:
1) Identify the presence or absence of a faucet aerator, note in sample location notes. Any faucet
aerator mesh screen(s) should be visible as you closely investigate the faucet, at the faucet tip
where water exits the faucet.
2) Gently remove outer corrosion deposits on the faucet aerator, if visible.
3) Remove aerator from faucet by manually unscrewing. If the aerator screen(s) will not come off,
try removing more visible corrosion deposits before turning again. Can also try applying a small
strip of leather/suede to the aerator and use channel lock pliers to provide additional leverage
to unscrew. If, after all attempts, the aerator cannot be removed, make a note in the sample
location notes.
4) Once aerator is off the faucet, identify the number of aerator screens that it contains (one or
more). Take a picture of the aerator screen(s) in the direction of flow. That is, take a picture of
the upflow side of the aerator that is otherwise not visible when the aerator is installed
(maximize the aerator in the field of view while maintaining a focused picture). Associate the
photo with the sample location ID.
5) Layer 3 Kimwipes on the counter (or another flat surface) and turn aerator upside down on the
Kimwipes. Tap a few times to release any particulates trapped on the aerator onto the Kimwipe.
6) If there are still particles trapped on the aerator screen, fill a squeeze bottle with tap water from
the sample location. Hold the aerator and Kimwipes over the sink while another sampler squirts
water from the downflow side of the aerator towards the Kimwipe. This will flush/release any
remaining particles from the aerator screen onto the Kimwipe.
7) Once all visible particles have been removed, do a final rinse of the aerator screen(s) with
flowing tap water. Then wipe out the aerator with a Kimwipe and reinstall on the faucet (i.e.,
manually screw back). Cleaning the aerator screen of debris is good practice in general. It can
-------
especially benefit the resident if lead-containing particulate had been previously trapped within
the screen(s).
8) Take Kimwipe with the collected particles and fold over twice, then place the folded Kimwipe in
a plastic Ziploc bag.
9) Label the plastic Ziploc bag with the sample location ID.
Sample Handling and Custody Requirements:
Aerator particulate samples will be placed wet into individual plastic Ziploc bags labeled with the sample
location ID. All samples will be manually carried by ORD personnel to EPA's laboratory in Cincinnati,
Ohio. On arrival in the laboratory the bags will be opened to allow the samples to dry.
Analysis:
Material trapped and collected from residential aerators will be analyzed in Cincinnati by EPA's Office of
Research and Development (ORD) Advanced Materials and Solids Analysis Research Core (AMSARC).
Analysts will identify the characteristics of the particulates present, categorize them, and select
representative particles for scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS),
and other solids analysis approaches as warranted. Analysis will be per ORD's QAPP K-WID-0030257-QP-
1-3, Morphological, Mineralogical, and Chemical Characterization of Pipe Scales, section B. Data
Generation and Acquisition.
-------
PROJECT: USEPA Region 2 LSASD
Sequential Drinking Water Sampling for Lead and Copper in the US Virgin Islands
DATE: November 7, 2023
REGARDING: Deviation from the approved Quality Assurance Project Plan (QAPP)
Due to United Parcel Service shipping delays EPA Region 2 field samplers will now be utilizing a
certified precleaned 250 mL sample bottles provided by Ocean Systems Laboratory vs. the 125 mL
bottles that did not arrive in in time for the sampling event. Since our 125mL bottles are not
available, water samples will be collected into the 250 mL bottles.
To ensure the appropriate volume is collected in the 250 mL bottle, the sampling team will calibrate
the volume needed in the 250 mL bottle using a graduated cylinder.
Procedure:
1. The graduated cylinder will be filled with water to 125 mLs.
2. The water from the cylinder will be poured into a 250 mL container and capped.
3. With the 250 mL container sitting on a level surface the field team will mark the meniscus of
the water line on the 250 mL bottle.
4. Using the marked bottle, the remaining 250 mL bottles will be marked with a water line for
the purpose of collecting 125 mLs of water in each 250 mL bottle.
This document will serve as an addendum to the previously approved QAPP.
rARni I VM C C Digitally signed by CAROL LYNES
LnnUL L I IN tj Date: 2023.11.07 10:54:21 -05'00'
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
2890 Woodbridge Avenue
Edison , New Jersey 08837
732-906-6886 Phone
732-906-6165 Fax
November 20, 2023
Thuaii Tran
Monitoring & Assessment Branch
US EPA/DESA/MAB
Edison, NJ 08837
RE: US VI Drinking Water - 2311021
Enclosed are the results of analyses for samples received by the laboratory between 11/10/2023 and
11/15/2023. The signature below reflects the laboratory's approval of the reported results. If you
have any questions concerning this report, please refer to Project Number 2311021 and contact the
laboratory.
Sincerely,
John R. Bourbon
Chief, LSASD/LB
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Project Narrative:
The National Environmental Laboratory Accreditation Conference Institute (TNI) is a voluntary environmental
laboratory accreditation association of State and Federal agencies. TNI established and promoted a National
Environmental Laboratory Accreditation Program (NELAP) that provides a uniform set of standards for the
generation of environmental data that are of known and defensible quality. The EPA Region 2 Laboratory is
NELAP accredited. The Laboratory tests that are accredited have met all the requirements established under the
TNI Standards.
Condition Comments
None
Comments):
The "Sample Analysis Date and Time" is included in the results section for any analyte with a prescribed holding
time of 72 hours or less.
Data Qualifiers):
U- The analyte was not detected at or above the Reporting Limit.
J- The identification of the analyte is acceptable; the reported value is an estimate.
K- The identification of the analyte is acceptable; the reported value may be biased high.
L- The identification of the analyte is acceptable; the reported value may be biased low.
NJ- There is presumptive evidence that the analyte is present; the analyte is reported as a tentative identification.
The reported value is an estimate.
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 1 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting Limit(s):
The Laboratory was able to achieve the appropriate limit for each analyte requested.
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 2 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR SAMPLES
Field ID
Laboratory ID
Matrix
Date Sampled
Date Received
2311021-01
Aqueous
11/07/2023 10:36
11/10/2023 10:30
2311021-02
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-03
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-04
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-05
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-06
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-07
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-08
Aqueous
11/07/2023 10:37
11/10/2023 10:30
2311021-09
Aqueous
11/07/2023 10:38
11/10/2023 10:30
2311021-10
Aqueous
11/07/2023 10:38
11/10/2023 10:30
2311021-11
Aqueous
11/07/2023 11:18
11/10/2023 10:30
2311021-12
Aqueous
11/07/2023 11:18
11/10/2023 10:30
2311021-13
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-14
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-15
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-16
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-17
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-18
Aqueous
11/07/2023 11:19
11/10/2023 10:30
2311021-19
Aqueous
11/07/2023 11:20
11/10/2023 10:30
2311021-20
Aqueous
11/07/2023 11:20
11/10/2023 10:30
2311021-21
Aqueous
11/07/2023 17:58
11/10/2023 10:30
2311021-22
Aqueous
11/07/2023 17:58
11/10/2023 10:30
2311021-23
Aqueous
11/07/2023 17:58
11/10/2023 10:30
2311021-24
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-25
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-26
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-27
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-28
Aqueous
11/07/2023 17:59
11/10/2023 10:30
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 3 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR SAMPLES
Field ID
Laboratory ID
Matrix
Date Sampled
Date Received
2311021-29
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-30
Aqueous
11/07/2023 17:59
11/10/2023 10:30
2311021-31
Aqueous
11/08/2023 06:11
11/10/2023 10:30
2311021-32
Aqueous
11/08/2023 06:12
11/10/2023 10:30
2311021-33
Aqueous
11/08/2023 06:12
11/10/2023 10:30
2311021-34
Aqueous
11/08/2023 06:12
11/10/2023 10:30
2311021-35
Aqueous
11/08/2023 06:12
11/10/2023 10:30
2311021-36
Aqueous
11/08/2023 06:13
11/10/2023 10:30
2311021-37
Aqueous
11/08/2023 06:13
11/10/2023 10:30
2311021-38
Aqueous
11/08/2023 06:13
11/10/2023 10:30
2311021-39
Aqueous
11/08/2023 06:15
11/10/2023 10:30
2311021-40
Aqueous
11/08/2023 06:16
11/10/2023 10:30
2311021-41
Aqueous
11/08/2023 10:04
11/10/2023 10:30
2311021-42
Aqueous
11/08/2023 10:04
11/10/2023 10:30
2311021-43
Aqueous
11/08/2023 10:04
11/10/2023 10:30
2311021-44
Aqueous
11/08/2023 10:04
11/10/2023 10:30
2311021-45
Aqueous
11/08/2023 10:04
11/10/2023 10:30
2311021-46
Aqueous
11/08/2023 10:05
11/10/2023 10:30
2311021-47
Aqueous
11/08/2023 10:05
11/10/2023 10:30
2311021-48
Aqueous
11/08/2023 15:26
11/10/2023 10:30
2311021-49
Aqueous
11/08/2023 15:26
11/10/2023 10:30
2311021-51
Aqueous
11/08/2023 15:26
11/10/2023 10:30
2311021-52
Aqueous
11/08/2023 15:26
11/10/2023 10:30
2311021-53
Aqueous
11/08/2023 15:27
11/10/2023 10:30
2311021-54
Aqueous
11/08/2023 15:27
11/10/2023 10:30
2311021-55
Aqueous
11/08/2023 15:27
11/10/2023 10:30
2311021-56
Aqueous
11/08/2023 15:27
11/10/2023 10:30
2311021-57
Aqueous
11/08/2023 15:27
11/10/2023 10:30
2311021-58
Aqueous
11/08/2023 15:28
11/10/2023 10:30
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 4 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR SAMPLES
Field ID
Laboratory ID
Matrix
Date Sampled
Date Received
2311021-59
Aqueous
11/08/2023
15:28
11/10/2023 10:30
2311021-60
Aqueous
11/08/2023
15:28
11/10/2023 10:30
2311021-61
Aqueous
11/08/2023
15:28
11/10/2023 10:30
2311021-62
Aqueous
11/08/2023
16:34
11/10/2023 10:30
2311021-63
Aqueous
11/08/2023
16:34
11/10/2023 10:30
2311021-64
Aqueous
11/08/2023
16:34
11/10/2023 10:30
2311021-65
Aqueous
11/08/2023
16:35
11/10/2023 10:30
2311021-66
Aqueous
11/08/2023
16:35
11/10/2023 10:30
2311021-67
Aqueous
11/08/2023
16:35
11/10/2023 10:30
2311021-68
Aqueous
11/08/2023
16:35
11/10/2023 10:30
2311021-69
Aqueous
11/08/2023
16:35
11/10/2023 10:30
2311039-01
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-02
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-03
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-04
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-05
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-06
Aqueous
11/09/2023
08:27
11/15/2023 09:30
2311039-07
Aqueous
11/09/2023
08:28
11/15/2023 09:30
2311039-08
Aqueous
11/09/2023
08:28
11/15/2023 09:30
2311039-09
Aqueous
11/09/2023
08:28
11/15/2023 09:30
2311039-10
Aqueous
11/09/2023
08:28
11/15/2023 09:30
2311039-11
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-12
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-13
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-14
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-15
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-16
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-17
Aqueous
11/09/2023
13:24
11/15/2023 09:30
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 5 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR SAMPLES
Field ID
Laboratory ID
Matrix
Date Sampled
Date Received
2311039-18
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-19
Aqueous
11/09/2023
13:24
11/15/2023 09:30
2311039-20
Aqueous
11/09/2023
13:25
11/15/2023 09:30
2311039-21
Aqueous
11/09/2023
13:25
11/15/2023 09:30
2311039-22
Aqueous
11/09/2023
13:25
11/15/2023 09:30
2311039-23
Aqueous
11/09/2023
13:25
11/15/2023 09:30
2311039-24
Aqueous
11/09/2023
13:25
11/15/2023 09:30
2311039-25
Aqueous
11/09/2023
13:26
11/15/2023 09:30
2311039-26
Aqueous
11/09/2023
13:26
11/15/2023 09:30
2311039-27
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-28
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-29
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-30
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-31
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-32
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-33
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-34
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-35
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-36
Aqueous
11/09/2023
14:07
11/15/2023 09:30
2311039-37
Aqueous
11/09/2023
14:08
11/15/2023 09:30
2311039-38
Aqueous
11/09/2023
14:08
11/15/2023 09:30
2311039-39
Aqueous
11/09/2023
14:09
11/15/2023 09:30
2311039-40
Aqueous
11/09/2023
14:34
11/15/2023 09:30
2311039-41
Aqueous
11/09/2023
14:34
11/15/2023 09:30
2311039-42
Aqueous
11/09/2023
14:34
11/15/2023 09:30
2311039-43
Aqueous
11/09/2023
14:34
11/15/2023 09:30
2311039-44
Aqueous
11/09/2023
14:35
11/15/2023 09:30
2311039-45
Aqueous
11/09/2023
14:35
11/15/2023 09:30
2311039-46
Aqueous
11/09/2023
14:35
11/15/2023 09:30
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 6 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR SAMPLES
Field ID
Laboratory ID
Matrix
Date Sampled
Date Received
2311039-47
Aqueous
11/09/2023
14:35
11/15/2023 09:30
2311039-48
Aqueous
11/09/2023
14:35
11/15/2023 09:30
2311039-49
Aqueous
11/09/2023
14:36
11/15/2023 09:30
2311039-50
Aqueous
11/09/2023
14:36
11/15/2023 09:30
2311039-51
Aqueous
11/09/2023
14:36
11/15/2023 09:30
2311039-52
Aqueous
11/09/2023
14:36
11/15/2023 09:30
2311039-53
Aqueous
11/09/2023
14:36
11/15/2023 09:30
2311039-54
Aqueous
11/09/2023
14:37
11/15/2023 09:30
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 7 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
SUMMARY REPORT FOR METHODS
Analysis
Method
Certification
Matrix
Metals ICP TAL NPDES/DW
Metals ICPMS TAL NPDES/DW
EPA 200.7 SOP C-109 Rev 3.7
EPA 200.8 SOP C-112 Rev 3.9
NELAP
NELAP
Aqueous
Aqueous
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 8 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 2311021-01
Calcium
—
U
500
ug/L
B311077
Iron
...
U
50.0 ug/L
B311077
Magnesium
2910
500
ug/L
B311077
Potassium
3180
500
ug/L
B311077
Sodium
2570
1000 ug/L
B311077
Tin
...
U
10.0 ug/L
B311077
Metals I CP MS
Aluminum
...
U
20.0 ug/L
B311081
Antimony
...
U
1.00 ug/L
B311081
Arsenic
...
U
1.00 ug/L
B311081
Barium
...
U
1.00 ug/L
B311081
Cadmium
...
U
1.00 ug/L
B311081
Chromium
...
U
2.00 ug/L
B311081
Copper
...
U
1.00 ug/L
B311081
Lead
...
U
1.00 ug/L
B311081
Manganese
...
U
1.00 ug/L
B311081
Nickel
...
U
1.00 ug/L
B311081
Vanadium
...
U
1.00 ug/L
B311081
Zinc
...
U
2.00 ug/L
B311081
Sample II): 23
11021-02
Metals ICP
Calcium
6200
500
ug/L
B311077
Iron
269
50.0 ug/L
B311077
Magnesium
1060
500
ug/L
B311077
Potassium
4460
500
ug/L
B311077
Sodium
87500
1000 ug/L
B311077
Tin
...
U
10.0 ug/L
B311077
Metals I CP MS
Aluminum
287
20.0 ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 9 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-02
Antimony
—
U
1.00
ug/L
B311081
Arsenic
1.28
1.00
ug/L
B311081
Barium
3.59
1.00
ug/L
B311081
Cadmium
—
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
135
1.00
ug/L
B311081
Lead
13.9
1.00
ug/L
B311081
Manganese
12.5
1.00
ug/L
B311081
Nickel
9.47
1.00
ug/L
B311081
Vanadium
1.17
1.00
ug/L
B311081
Zinc
238
2.00
ug/L
B311081
Sample II): 2311021-03
Calcium
4650
500
ug/L
B311077
Iron
132
50.0
ug/L
B311077
Magnesium
1040
500
ug/L
B311077
Potassium
4450
500
ug/L
B311077
Sodium
87800
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
243
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
1.28
1.00
ug/L
B311081
Barium
2.64
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
41.5
1.00
ug/L
B311081
Lead
5.76
1.00
ug/L
B311081
Manganese
3.24
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 10 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Sample II): 2311021-03
1.72
54.9
U
1.00
1.00
2.00
ug/L
ug/L
ug/L
B311081
B311081
B311081
Sample II): 2311021-04
Calcium
4410
500
ug/L
B311111
Iron
469
50.0 ug/L
B311111
Magnesium
1020
500
ug/L
B311111
Potassium
4270
500
ug/L
B311111
Sodium
85900
1000 ug/L
B311111
Tin
—
U
10.0 ug/L
B311111
Metals I CP MS
Aluminum
334
20.0 ug/L
B311105
Antimony
—
U
1.00 ug/L
B311105
Arsenic
...
U
1.00 ug/L
B311105
Barium
2.64
1.00 ug/L
B311105
Cadmium
...
U
1.00 ug/L
B311105
Chromium
...
U
2.00 ug/L
B311105
Copper
89.4
1.00 ug/L
B311105
Lead
10.9
1.00 ug/L
B311105
Manganese
7.95
1.00 ug/L
B311105
Nickel
1.98
1.00 ug/L
B311105
Vanadium
...
U
1.00 ug/L
B311105
Zinc
94.8
2.00 ug/L
B311105
II):
Sample II): 23
11021-0?
Metals ICP
Calcium
3310
500
ug/L
B311077
Iron
183
50.0 ug/L
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 11 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Magnesium
Metals ICP
1000
Sample II): 2311021-05
500
ug/L
B311077
Potassium
4460
500
ug/L
B311077
Sodium
88000
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
137
20.0
ug/L
B311081
Antimony
—
U
1.00
ug/L
B311081
Arsenic
...
U
1.00
ug/L
B311081
Barium
1.51
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
56.3
1.00
ug/L
B311081
Lead
4.56
1.00
ug/L
B311081
Manganese
3.02
1.00
ug/L
B311081
Nickel
...
U
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
40.1
2.00
ug/L
B311081
Sample II): 2311021-0f»
Calcium
2900
500
ug/L
B311077
Iron
149
50.0
ug/L
B311077
Magnesium
969
500
ug/L
B311077
Potassium
4390
500
ug/L
B311077
Sodium
86300
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
121
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
u
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 12 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021 -Of.
Barium
1.26
1.00
ug/L
B311081
Cadmium
—
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
28.5
1.00
ug/L
B311081
Lead
2.44
1.00
ug/L
B311081
Manganese
2.00
1.00
ug/L
B311081
Nickel
...
U
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
27.0
2.00
ug/L
B311081
Sample II): 2311021 -0"
Calcium
2710
500
ug/L
B311077
Iron
126
50.0
ug/L
B311077
Magnesium
947
500
ug/L
B311077
Potassium
4280
500
ug/L
B311077
Sodium
84200
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
97.1
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
u
1.00
ug/L
B311081
Barium
...
u
1.00
ug/L
B311081
Cadmium
...
u
1.00
ug/L
B311081
Chromium
...
u
2.00
ug/L
B311081
Copper
23.9
1.00
ug/L
B311081
Lead
1.83
1.00
ug/L
B311081
Manganese
1.56
1.00
ug/L
B311081
Nickel
...
u
1.00
ug/L
B311081
Vanadium
...
u
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 13 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Sample II): 2311021-0"
23.8
2.00
ug/L B311081
Sample II): 2311021-OS
Calcium
2680
500
ug/L
B311077
Iron
121
50.0 ug/L
B311077
Magnesium
976
500
ug/L
B311077
Potassium
4380
500
ug/L
B311077
Sodium
87000
1000 ug/L
B311077
Tin
—
U
10.0 ug/L
B311077
Metals I CP MS
Aluminum
69.6
20.0 ug/L
B311081
Antimony
—
U
1.00 ug/L
B311081
Arsenic
—
U
1.00 ug/L
B311081
Barium
—
U
1.00 ug/L
B311081
Cadmium
—
U
1.00 ug/L
B311081
Chromium
...
U
2.00 ug/L
B311081
Copper
16.3
1.00 ug/L
B311081
Lead
1.71
1.00 ug/L
B311081
Manganese
1.29
1.00 ug/L
B311081
Nickel
...
U
1.00 ug/L
B311081
Vanadium
...
U
1.00 ug/L
B311081
Zinc
20.3
2.00 ug/L
B311081
II):
Sample II): 23
11021 -0*>
Metals ICP
Calcium
2620
500
ug/L
B311077
Iron
120
50.0 ug/L
B311077
Magnesium
955
500
ug/L
B311077
Potassium
4340
500
ug/L
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 14 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sodium
Tin
Metals I CP MS
Metals ICP
85400
U
Sample II): 231
1000 ug/L B311077
10.0 ug/L B311077
Aluminum
64.5
20.0
ug/L
B311081
Antimony
—
U
1.00
ug/L
B311081
Arsenic
—
U
1.00
ug/L
B311081
Barium
—
U
1.00
ug/L
B311081
Cadmium
—
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
14.5
1.00
ug/L
B311081
Lead
1.34
1.00
ug/L
B311081
Manganese
1.25
1.00
ug/L
B311081
Nickel
...
U
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
23.1
2.00
ug/L
B311081
Sample II): 2311021-10
Calcium
2600
500
ug/L
B311077
Iron
108
50.0
ug/L
B311077
Magnesium
952
500
ug/L
B311077
Potassium
4300
500
ug/L
B311077
Sodium
84500
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
54.3
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
u
1.00
ug/L
B311081
Barium
...
u
1.00
ug/L
B311081
Cadmium
...
u
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 15 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-10
Chromium
—
U
2.00
ug/L
B311081
Copper
28.3
1.00
ug/L
B311081
Lead
2.88
1.00
ug/L
B311081
Manganese
1.35
1.00
ug/L
B311081
Nickel
1.43
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
61.4
2.00
ug/L
B311081
Sample II): 2311021-11
Calcium
2930
500
ug/L
B311076
Iron
180
50.0
ug/L
B311076
Magnesium
1070
500
ug/L
B311076
Potassium
4560
500
ug/L
B311076
Sodium
91700
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.24
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
19.4
2.00
ug/L
B311080
Copper
21.4
1.00
ug/L
B311080
Lead
4.55
1.00
ug/L
B311080
Manganese
7.02
1.00
ug/L
B311080
Nickel
94.7
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
307
4.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 16 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 2311021-12
Calcium
2850
500
ug/L
B311076
Iron
80.6
50.0
ug/L
B311076
Magnesium
1060
500
ug/L
B311076
Potassium
4590
500
ug/L
B311076
Sodium
91700
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
4.11
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
2.40
1.00
ug/L
B311080
Nickel
1.82
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
34.5
2.00
ug/L
B311080
11):
Sample II): 23
11021-13
Metals ICP
Calcium
2850
500
ug/L
B311076
Iron
107
50.0 ug/L
B311076
Magnesium
1060
500
ug/L
B311076
Potassium
4580
500
ug/L
B311076
Sodium
91700
1000 ug/L
B311076
Tin
...
U
10.0 ug/L
B311076
U
20.0
ug/L
B311080
U.S.E.PA Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 17 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-13
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
4.28
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
3.04
1.00
ug/L
B311080
Nickel
...
u
1.00
ug/L
B311080
Vanadium
...
u
1.00
ug/L
B311080
Zinc
11.6
2.00
ug/L
B311080
Sample II): 2311021-14
Calcium
2810
500
ug/L
B311076
Iron
141
50.0
ug/L
B311076
Magnesium
1070
500
ug/L
B311076
Potassium
4670
500
ug/L
B311076
Sodium
93900
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
5.58
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
2.38
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 18 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
Magnesium
U
U
11.5
2650
85.4
1010
Sample II): 2311021-14
1.00 ug/L B311080
1.00 ug/L B311080
2.00 ug/L B311080
Sample II): 2311021-15
Calcium
2670
500
ug/L
B311076
Iron
101
50.0
ug/L
B311076
Magnesium
1030
500
ug/L
B311076
Potassium
4620
500
ug/L
B311076
Sodium
92300
1000
ug/L
B311076
Tin
—
U
10.0
ug/L
B311076
s I CP MS
Aluminum
—
U
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
3.98
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
1.86
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
8.83
2.00
ug/L
B311080
Sample II): 2311021 -If.
500 ug/L B311076
50.0 ug/L B311076
500 ug/L B311076
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 19 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 2311021-If.
Potassium
4600
500
ug/L
B311076
Sodium
92000
1000
ug/L
B311076
Tin
—
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
—
U
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
3.51
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
1.86
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
7.78
2.00
ug/L
B311080
Sample II): 2311021-1"
Calcium
2640
500
ug/L
B311076
Iron
74.2
50.0
ug/L
B311076
Magnesium
1010
500
ug/L
B311076
Potassium
4590
500
ug/L
B311076
Sodium
91600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311080
Antimony
...
u
1.00
ug/L
B311080
Arsenic
...
u
1.00
ug/L
B311080
Barium
...
u
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 20 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-1"
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
3.41
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
1.85
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
10.3
2.00
ug/L
B311080
Sample II): 2311021-IS
Calcium
2600
500
ug/L
B311076
Iron
54.0
50.0
ug/L
B311076
Magnesium
971
500
ug/L
B311076
Potassium
4570
500
ug/L
B311076
Sodium
91200
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
3.37
1.00
ug/L
B311080
Lead
1.07
1.00
ug/L
B311080
Manganese
1.85
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
33.8
2.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 21 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals ICP
Sample II): 2311021-l'J
Calcium
2650
500
ug/L
B311076
Iron
72.4
50.0
ug/L
B311076
Magnesium
998
500
ug/L
B311076
Potassium
4570
500
ug/L
B311076
Sodium
91600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
3.95
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
2.46
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
14.7
2.00
ug/L
B311080
Sample II): 2311021-20
Calcium
2630
500
ug/L
B311076
Iron
99.0
50.0
ug/L
B311076
Magnesium
1010
500
ug/L
B311076
Potassium
4510
500
ug/L
B311076
Sodium
90600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 22 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-20
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
4.27
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
2.34
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
8.32
2.00
ug/L
B311080
Sample II): 2311021-21
Calcium
8770
500
ug/L
B311077
Iron
...
U
50.0
ug/L
B311077
Magnesium
515
J
500
ug/L
B311077
Potassium
4480
500
ug/L
B311077
Sodium
91100
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Metals I CP MS
Aluminum
87.5
20.0
ug/L
B311084
Antimony
...
u
1.00
ug/L
B311084
Arsenic
...
u
1.00
ug/L
B311084
Barium
6.09
1.00
ug/L
B311084
Cadmium
...
u
1.00
ug/L
B311084
Chromium
...
u
2.00
ug/L
B311084
Copper
...
u
1.00
ug/L
B311084
Lead
...
u
1.00
ug/L
B311084
Manganese
...
u
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 23 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals I CP MS
Metals ICP
Calcium
Iron
Magnesium
U
U
36.7
8510
502
U
Sample II): 2311021-21
1.00 ug/L B311084
1.00 ug/L B311084
2.00 ug/L B311084
Sample II): 2311021-22
Calcium
8750
500
ug/L
B311077
Iron
...
U
50.0
ug/L
B311077
Magnesium
518
500
ug/L
B311077
Potassium
4450
500
ug/L
B311077
Sodium
90600
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Aluminum
87.1
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
5.95
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
...
U
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
...
U
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
8.16
2.00
ug/L
B311084
Sample II): 2311021-23
500
50.0
500
ug/L
ug/L
ug/L
B311077
B311077
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 24 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 2311021-23
Potassium
4390
500
ug/L
B311077
Sodium
88500
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
83.6
20.0
ug/L
B311084
Antimony
—
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
5.79
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
1.08
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
...
U
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
12.9
2.00
ug/L
B311084
Sample II): 2311021-24
Calcium
8560
500
ug/L
B311077
Iron
...
U
50.0
ug/L
B311077
Magnesium
...
U
500
ug/L
B311077
Potassium
4380
500
ug/L
B311077
Sodium
88200
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
93.1
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.45
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 25 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Metals ICP
Sample II): 2311021-24
Cadmium
—
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
1.04
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
...
U
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
11.4
2.00
ug/L
B311084
Sample II): 2311021-25
Calcium
8840
500
ug/L
B311077
Iron
...
U
50.0
ug/L
B311077
Magnesium
...
u
500
ug/L
B311077
Potassium
4410
500
ug/L
B311077
Sodium
89200
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Metals I CP MS
Aluminum
86.3
20.0
ug/L
B311084
Antimony
...
u
1.00
ug/L
B311084
Arsenic
...
u
1.00
ug/L
B311084
Barium
6.06
1.00
ug/L
B311084
Cadmium
...
u
1.00
ug/L
B311084
Chromium
...
u
2.00
ug/L
B311084
Copper
...
u
1.00
ug/L
B311084
Lead
...
u
1.00
ug/L
B311084
Manganese
...
u
1.00
ug/L
B311084
Nickel
...
u
1.00
ug/L
B311084
Vanadium
...
u
1.00
ug/L
B311084
Zinc
9.34
2.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 26 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 2311021 -2(>
Calcium
8780
500
ug/L
B311077
Iron
—
U
50.0
ug/L
B311077
Magnesium
—
u
500
ug/L
B311077
Potassium
4380
500
ug/L
B311077
Sodium
88400
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Aluminum
91.6
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.45
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
1.01
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
...
u
1.00
ug/L
B311084
Nickel
...
u
1.00
ug/L
B311084
Vanadium
...
u
1.00
ug/L
B311084
Zinc
11.6
2.00
ug/L
B311084
II):
Sample II): 23
11021-2"
Metals ICP
Calcium
8860
500
ug/L
B311077
Iron
...
U
50.0 ug/L
B311077
Magnesium
...
u
500
ug/L
B311077
Potassium
4390
500
ug/L
B311077
Sodium
89000
1000 ug/L
B311077
Tin
...
u
10.0 ug/L
B311077
82.3
20.0
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 27 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Metals ICP
Metals I CP MS
Sample II): 2311021-2"
Antimony
—
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.10
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
2.71
1.00
ug/L
B311084
Lead
1.60
1.00
ug/L
B311084
Manganese
...
U
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
34.8
2.00
ug/L
B311084
Sample II): 2311021-2S
Calcium
8950
500
ug/L
B311077
Iron
...
U
50.0
ug/L
B311077
Magnesium
...
u
500
ug/L
B311077
Potassium
4360
500
ug/L
B311077
Sodium
88100
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Aluminum
82.3
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.10
1.00
ug/L
B311084
Cadmium
...
u
1.00
ug/L
B311084
Chromium
...
u
2.00
ug/L
B311084
Copper
1.72
1.00
ug/L
B311084
Lead
...
u
1.00
ug/L
B311084
Manganese
...
u
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 28 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals I CP MS
Metals ICP
Calcium
Iron
U
U
35.3
8810
66.6
Sample II): 23II02I-2H
1.00 ug/L B311084
1.00 ug/L B311084
2.00 ug/L B311084
Sample II): 2311021-2'J
Calcium
9130
500
ug/L
B311077
Iron
51.0
50.0
ug/L
B311077
Magnesium
...
U
500
ug/L
B311077
Potassium
4400
500
ug/L
B311077
Sodium
89000
1000
ug/L
B311077
Tin
...
u
10.0
ug/L
B311077
Aluminum
84.5
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.16
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
3.89
1.00
ug/L
B311084
Lead
1.15
1.00
ug/L
B311084
Manganese
...
U
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
128
2.00
ug/L
B311084
Sample II): 2311021-30
500
50.0
ug/L
ug/L
B311077
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 29 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Magnesium
Metals ICP
U
Sample II): 2311021-30
500
ug/L
B311077
Potassium
4420
500
ug/L
B311077
Sodium
88600
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
86.9
20.0
ug/L
B311084
Antimony
—
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
6.03
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
2.50
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
1.05
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
49.0
2.00
ug/L
B311084
Sample II): 2311021-31
Calcium
U
500
ug/L
B311077
Iron
U
50.0
ug/L
B311077
Magnesium
U
500
ug/L
B311077
Potassium
U
500
ug/L
B311077
Sodium
U
1000
ug/L
B311077
Tin
U
10.0
ug/L
B311077
s I CP MS
Aluminum
U
20.0
ug/L
B311084
Antimony
U
1.00
ug/L
B311084
Arsenic
U
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 30 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-31
Barium
U
1.00
ug/L
B311084
Cadmium
U
1.00
ug/L
B311084
Chromium
U
2.00
ug/L
B311084
Copper
U
1.00
ug/L
B311084
Lead
U
1.00
ug/L
B311084
Manganese
U
1.00
ug/L
B311084
Nickel
U
1.00
ug/L
B311084
Vanadium
U
1.00
ug/L
B311084
Zinc
U
2.00
ug/L
B311084
Sample II): 2311021-32
Calcium
3100
500
ug/L
B311077
Iron
2710
50.0
ug/L
B311077
Magnesium
948
500
ug/L
B311077
Potassium
4400
500
ug/L
B311077
Sodium
86800
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
32.3
20.0
ug/L
B311084
Antimony
—
u
1.00
ug/L
B311084
Arsenic
—
u
1.00
ug/L
B311084
Barium
—
u
1.00
ug/L
B311084
Cadmium
—
u
1.00
ug/L
B311084
Chromium
...
u
2.00
ug/L
B311084
Copper
147
1.00
ug/L
B311084
Lead
28.8
1.00
ug/L
B311084
Manganese
26.8
1.00
ug/L
B311084
Nickel
2.02
1.00
ug/L
B311084
Vanadium
...
u
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 31 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Metals ICP
Metals ICP
Calcium
Iron
Magnesium
Potassium
856
3270
755
1060
4420
Sample II): 2311021-32
10.0
ug/L B311084
Sample II): 2311021-33
Calcium
2920
500
ug/L
B311077
Iron
425
50.0
ug/L
B311077
Magnesium
917
500
ug/L
B311077
Potassium
4370
500
ug/L
B311077
Sodium
86800
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
s I CP MS
Aluminum
—
U
20.0
ug/L
B311084
Antimony
—
U
1.00
ug/L
B311084
Arsenic
—
U
1.00
ug/L
B311084
Barium
—
U
1.00
ug/L
B311084
Cadmium
—
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
4.65
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
4.39
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
47.6
2.00
ug/L
B311084
Sample II): 2311021-34
500
50.0
500
500
ug/L
ug/L
ug/L
ug/L
B311077
B311077
B311077
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 32 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sodium
Tin
Metals I CP MS
Metals ICP
87600
U
Sample II): 2311021-34
1000 ug/L B311077
10.0 ug/L B311077
Aluminum
—
U
20.0
ug/L
B311084
Antimony
—
U
1.00
ug/L
B311084
Arsenic
—
u
1.00
ug/L
B311084
Barium
—
u
1.00
ug/L
B311084
Cadmium
—
u
1.00
ug/L
B311084
Chromium
...
u
2.00
ug/L
B311084
Copper
8.09
1.00
ug/L
B311084
Lead
1.39
1.00
ug/L
B311084
Manganese
5.74
1.00
ug/L
B311084
Nickel
...
u
1.00
ug/L
B311084
Vanadium
...
u
1.00
ug/L
B311084
Zinc
32.3
2.00
ug/L
B311084
Sample II): 2311021-35
Calcium
3230
500
ug/L
B311077
Iron
1170
50.0
ug/L
B311077
Magnesium
1030
500
ug/L
B311077
Potassium
4260
500
ug/L
B311077
Sodium
84100
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311084
Antimony
...
u
1.00
ug/L
B311084
Arsenic
...
u
1.00
ug/L
B311084
Barium
...
u
1.00
ug/L
B311084
Cadmium
...
u
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 33 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 2311021-35
Metals I CP MS
Chromium
...
U
2.00 ug/L
B311084
Copper
31.8
1.00 ug/L
B311084
Lead
4.33
1.00 ug/L
B311084
Manganese
9.00
1.00 ug/L
B311084
Nickel
...
U
1.00 ug/L
B311084
Vanadium
...
U
1.00 ug/L
B311084
Zinc
46.9
2.00 ug/L
B311084
11):
Sample II): 23
1102l-3fi
Metals ICP
Calcium
3370
500
ug/L
B311077
Iron
508
50.0 ug/L
B311077
Magnesium
1100
500
ug/L
B311077
Potassium
4440
500
ug/L
B311077
Sodium
88000
1000 ug/L
B311077
Tin
...
U
10.0 ug/L
B311077
Metals I CP MS
Aluminum
...
U
20.0 ug/L
B311084
Antimony
...
U
1.00 ug/L
B311084
Arsenic
...
U
1.00 ug/L
B311084
Barium
...
U
1.00 ug/L
B311084
Cadmium
...
U
1.00 ug/L
B311084
Chromium
...
U
2.00 ug/L
B311084
Copper
3.36
1.00 ug/L
B311084
Lead
...
U
1.00 ug/L
B311084
Manganese
3.62
1.00 ug/L
B311084
Nickel
...
U
1.00 ug/L
B311084
Vanadium
...
U
1.00 ug/L
B311084
Zinc
21.3
2.00 ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 34 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals ICP
Sample II): 2311021-3"
Calcium
3440
500
ug/L
B311077
Iron
322
50.0
ug/L
B311077
Magnesium
1130
500
ug/L
B311077
Potassium
4490
500
ug/L
B311077
Sodium
89500
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Aluminum
...
U
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
...
U
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
3.87
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
2.66
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
29.2
2.00
ug/L
B311084
Sample II): 2311021-3S
Calcium
3340
500
ug/L
B311077
Iron
537
50.0
ug/L
B311077
Magnesium
1100
500
ug/L
B311077
Potassium
4420
500
ug/L
B311077
Sodium
87800
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 35 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-3H
Antimony
—
U
1.00
ug/L
B311084
Arsenic
—
U
1.00
ug/L
B311084
Barium
—
U
1.00
ug/L
B311084
Cadmium
—
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
3.19
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
4.70
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
18.5
2.00
ug/L
B311084
Sample II): 2311021-3'J
Calcium
3320
500
ug/L
B311077
Iron
484
50.0
ug/L
B311077
Magnesium
1080
500
ug/L
B311077
Potassium
4400
500
ug/L
B311077
Sodium
87500
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311084
Antimony
...
U
1.00
ug/L
B311084
Arsenic
...
U
1.00
ug/L
B311084
Barium
...
U
1.00
ug/L
B311084
Cadmium
...
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
2.59
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
4.52
1.00
ug/L
B311084
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 36 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
Magnesium
U
U
14.9
2930
52.4
1030
Sample II): 2311021-3'J
1.00 ug/L B311084
1.00 ug/L B311084
2.00 ug/L B311084
Sample II): 2311021-40
Calcium
3230
500
ug/L
B311077
Iron
443
50.0
ug/L
B311077
Magnesium
1050
500
ug/L
B311077
Potassium
4320
500
ug/L
B311077
Sodium
85300
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
s I CP MS
Aluminum
—
U
20.0
ug/L
B311084
Antimony
—
U
1.00
ug/L
B311084
Arsenic
—
U
1.00
ug/L
B311084
Barium
—
U
1.00
ug/L
B311084
Cadmium
—
U
1.00
ug/L
B311084
Chromium
...
U
2.00
ug/L
B311084
Copper
2.38
1.00
ug/L
B311084
Lead
...
U
1.00
ug/L
B311084
Manganese
4.30
1.00
ug/L
B311084
Nickel
...
U
1.00
ug/L
B311084
Vanadium
...
U
1.00
ug/L
B311084
Zinc
13.9
2.00
ug/L
B311084
Sample II): 2311021-41
500 ug/L B311076
50.0 ug/L B311076
500 ug/L B311076
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 37 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 2311021-41
Potassium
4640
500
ug/L
B311076
Sodium
92800
1000
ug/L
B311076
Tin
—
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
—
U
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
9.21
1.00
ug/L
B311080
Lead
2.26
1.00
ug/L
B311080
Manganese
1.32
1.00
ug/L
B311080
Nickel
2.23
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
652
10.0
ug/L
B311080
Sample II): 2311021-42
Calcium
2920
500
ug/L
B311076
Iron
63.6
50.0
ug/L
B311076
Magnesium
1060
500
ug/L
B311076
Potassium
4600
500
ug/L
B311076
Sodium
92600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311080
Antimony
...
u
1.00
ug/L
B311080
Arsenic
...
u
1.00
ug/L
B311080
Barium
...
u
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 38 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-42
Cadmium
—
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
5.68
1.00 ug/L
B311080
Lead
1.56
1.00 ug/L
B311080
Manganese
1.62
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
46.2
2.00 ug/L
B311080
11):
Sample II): 23
11021-43
Mi-lals ICP
Calcium
2780
500
ug/L
B311076
Iron
61.3
50.0 ug/L
B311076
Magnesium
1000
500
ug/L
B311076
Potassium
4470
500
ug/L
B311076
Sodium
88900
1000 ug/L
B311076
Tin
...
U
10.0 ug/L
B311076
Metals I CP MS
Aluminum
...
U
20.0 ug/L
B311080
Antimony
...
U
1.00 ug/L
B311080
Arsenic
...
U
1.00 ug/L
B311080
Barium
...
U
1.00 ug/L
B311080
Cadmium
...
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
6.21
1.00 ug/L
B311080
Lead
1.92
1.00 ug/L
B311080
Manganese
1.60
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
87.6
2.00 ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 39 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals ICP
Sample II): 2311021-44
Calcium
2850
500
ug/L
B311076
Iron
63.8
50.0
ug/L
B311076
Magnesium
1040
500
ug/L
B311076
Potassium
4600
500
ug/L
B311076
Sodium
92000
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
5.73
1.00
ug/L
B311080
Lead
1.53
1.00
ug/L
B311080
Manganese
1.78
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
23.1
2.00
ug/L
B311080
Sample II): 2311021-45
Calcium
2740
500
ug/L
B311076
Iron
61.2
50.0
ug/L
B311076
Magnesium
999
500
ug/L
B311076
Potassium
4500
500
ug/L
B311076
Sodium
89200
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 40 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-45
Antimony
—
U
1.00
ug/L
B311080
Arsenic
—
U
1.00
ug/L
B311080
Barium
—
U
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
6.62
1.00
ug/L
B311080
Lead
1.57
1.00
ug/L
B311080
Manganese
1.70
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
15.5
2.00
ug/L
B311080
Sample II): 2311021-4r.
Calcium
2740
500
ug/L
B311076
Iron
62.0
50.0
ug/L
B311076
Magnesium
1000
500
ug/L
B311076
Potassium
4490
500
ug/L
B311076
Sodium
89300
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
...
U
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
8.35
1.00
ug/L
B311080
Lead
1.88
1.00
ug/L
B311080
Manganese
1.70
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 41 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Sample II): 231102l-4f.
U
U
14.2
1.00 ug/L B311080
1.00 ug/L B311080
2.00 ug/L B311080
Sample II): 2311021-4"
Calcium
2720
500
ug/L
B311076
Iron
62.1
50.0 ug/L
B311076
Magnesium
999
500
ug/L
B311076
Potassium
4470
500
ug/L
B311076
Sodium
89000
1000 ug/L
B311076
Tin
—
U
10.0 ug/L
B311076
Metals I CP MS
Aluminum
—
U
20.0 ug/L
B311080
Antimony
—
U
1.00 ug/L
B311080
Arsenic
—
U
1.00 ug/L
B311080
Barium
—
U
1.00 ug/L
B311080
Cadmium
—
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
7.75
1.00 ug/L
B311080
Lead
1.66
1.00 ug/L
B311080
Manganese
1.74
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
13.2
2.00 ug/L
B311080
11):
Sample II): 23
11021 —IS
Metals ICP
Calcium
2860
500
ug/L
B311076
Iron
260
50.0 ug/L
B311076
Magnesium
1100
J
500
ug/L
B311076
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 42 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 2311021-4S
Potassium
4570
500
ug/L
B311076
Sodium
92300
1000
ug/L
B311076
Tin
—
U J
10.0
ug/L
B311076
Metals I CP MS
Aluminum
44.4
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.32
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
7.31
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
4.30
1.00
ug/L
B311080
Nickel
3.28
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
26.8
2.00
ug/L
B311080
Sample II): 2311021-4'J
Calcium
2850
500
ug/L
B311076
Iron
260
50.0
ug/L
B311076
Magnesium
1110
500
ug/L
B311076
Potassium
4610
500
ug/L
B311076
Sodium
92800
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
44.4
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.31
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 43 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 2311021-4'J
Metals I CP MS
Cadmium
—
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
5.12
1.00 ug/L
B311080
Lead
...
U
1.00 ug/L
B311080
Manganese
4.32
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
6.58
2.00 ug/L
B311080
11):
Sample II): 23
11021-51
Metals ICP
Calcium
2780
500
ug/L
B311076
Iron
243
50.0 ug/L
B311076
Magnesium
1070
500
ug/L
B311076
Potassium
4550
500
ug/L
B311076
Sodium
91200
1000 ug/L
B311076
Tin
...
U
10.0 ug/L
B311076
Metals I CP MS
Aluminum
44.9
20.0 ug/L
B311080
Antimony
...
U
1.00 ug/L
B311080
Arsenic
...
U
1.00 ug/L
B311080
Barium
1.25
1.00 ug/L
B311080
Cadmium
...
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
7.14
1.00 ug/L
B311080
Lead
...
U
1.00 ug/L
B311080
Manganese
4.38
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
5.64
2.00 ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 44 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 2311021-52
Calcium
2790
500
ug/L
B311076
Iron
268
50.0
ug/L
B311076
Magnesium
1070
500
ug/L
B311076
Potassium
4560
500
ug/L
B311076
Sodium
91300
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Aluminum
44.0
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.28
1.00
ug/L
B311080
Cadmium
...
u
1.00
ug/L
B311080
Chromium
...
u
2.00
ug/L
B311080
Copper
8.11
1.00
ug/L
B311080
Lead
1.90
1.00
ug/L
B311080
Manganese
4.66
1.00
ug/L
B311080
Nickel
...
u
1.00
ug/L
B311080
Vanadium
...
u
1.00
ug/L
B311080
Zinc
32.2
2.00
ug/L
B311080
II):
Sample II): 23
11021-53
Metals ICP
Calcium
2820
500
ug/L
B311076
Iron
280
50.0 ug/L
B311076
Magnesium
1090
500
ug/L
B311076
Potassium
4580
500
ug/L
B311076
Sodium
91900
1000 ug/L
B311076
Tin
...
U
10.0 ug/L
B311076
44.5
20.0
ug/L B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 45 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-53
Antimony
—
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.40
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
6.04
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
5.05
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
19.7
2.00
ug/L
B311080
Sample II): 2311021-54
Calcium
2790
500
ug/L
B311076
Iron
295
50.0
ug/L
B311076
Magnesium
1080
500
ug/L
B311076
Potassium
4510
500
ug/L
B311076
Sodium
91200
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
44.9
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
u
1.00
ug/L
B311080
Barium
1.28
1.00
ug/L
B311080
Cadmium
...
u
1.00
ug/L
B311080
Chromium
...
u
2.00
ug/L
B311080
Copper
5.45
1.00
ug/L
B311080
Lead
...
u
1.00
ug/L
B311080
Manganese
5.23
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 46 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
U
U
10.8
2810
289
Sample II): 2311021-54
1.00 ug/L B311080
1.00 ug/L B311080
2.00 ug/L B311080
Sample II): 2311021-5?
Calcium
2820
500
ug/L
B311076
Iron
316
50.0
ug/L
B311076
Magnesium
1090
500
ug/L
B311076
Potassium
4580
500
ug/L
B311076
Sodium
91900
1000
ug/L
B311076
Tin
—
U
10.0
ug/L
B311076
s I CP MS
Aluminum
44.7
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.25
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
5.21
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
5.41
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
8.39
2.00
ug/L
B311080
Sample II): 2311021-5f.
500
50.0
ug/L
ug/L
B311076
B311076
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 47 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 231102l-5f.
Magnesium
1080
500
ug/L
B311076
Potassium
4570
500
ug/L
B311076
Sodium
91700
1000 ug/L
B311076
Tin
—
U
10.0 ug/L
B311076
Metals I CP MS
Aluminum
44.8
20.0 ug/L
B311080
Antimony
—
u
1.00 ug/L
B311080
Arsenic
...
u
1.00 ug/L
B311080
Barium
1.28
1.00 ug/L
B311080
Cadmium
...
u
1.00 ug/L
B311080
Chromium
...
u
2.00 ug/L
B311080
Copper
8.04
1.00 ug/L
B311080
Lead
...
u
1.00 ug/L
B311080
Manganese
5.04
1.00 ug/L
B311080
Nickel
...
u
1.00 ug/L
B311080
Vanadium
...
u
1.00 ug/L
B311080
Zinc
7.94
2.00 ug/L
B311080
11):
Sample II): 23
11021-5"
Metals ICP
Calcium
2790
500
ug/L
B311076
Iron
268
50.0 ug/L
B311076
Magnesium
1070
500
ug/L
B311076
Potassium
4620
500
ug/L
B311076
Sodium
92300
1000 ug/L
B311076
Tin
...
u
10.0 ug/L
B311076
Metals I CP MS
Aluminum
45.0
20.0 ug/L
B311080
Antimony
...
u
1.00 ug/L
B311080
Arsenic
...
u
1.00 ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 48 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-5"
Barium
1.25
1.00
ug/L
B311080
Cadmium
—
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
19.8
1.00
ug/L
B311080
Lead
1.45
1.00
ug/L
B311080
Manganese
4.52
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
9.42
2.00
ug/L
B311080
Sample II): 231102I-5S
Calcium
2800
500
ug/L
B311076
Iron
290
50.0
ug/L
B311076
Magnesium
1080
500
ug/L
B311076
Potassium
4620
500
ug/L
B311076
Sodium
92600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
44.6
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
u
1.00
ug/L
B311080
Barium
1.26
1.00
ug/L
B311080
Cadmium
...
u
1.00
ug/L
B311080
Chromium
...
u
2.00
ug/L
B311080
Copper
12.2
1.00
ug/L
B311080
Lead
1.04
1.00
ug/L
B311080
Manganese
4.82
1.00
ug/L
B311080
Nickel
...
u
1.00
ug/L
B311080
Vanadium
...
u
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 49 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Sample II): 231102I-5S
5.94
2.00
ug/L B311080
Sample II): 2311021-5')
Calcium
2790
500
ug/L
B311076
Iron
326
50.0 ug/L
B311076
Magnesium
1090
500
ug/L
B311076
Potassium
4560
500
ug/L
B311076
Sodium
91600
1000 ug/L
B311076
Tin
—
U
10.0 ug/L
B311076
Metals I CP MS
Aluminum
45.1
20.0 ug/L
B311080
Antimony
—
U
1.00 ug/L
B311080
Arsenic
...
U
1.00 ug/L
B311080
Barium
1.31
1.00 ug/L
B311080
Cadmium
...
U
1.00 ug/L
B311080
Chromium
...
U
2.00 ug/L
B311080
Copper
7.03
1.00 ug/L
B311080
Lead
...
U
1.00 ug/L
B311080
Manganese
5.42
1.00 ug/L
B311080
Nickel
...
U
1.00 ug/L
B311080
Vanadium
...
U
1.00 ug/L
B311080
Zinc
5.09
2.00 ug/L
B311080
11):
Sample II): 23
II021-Ml
Metals ICP
Calcium
2820
500
ug/L
B311076
Iron
343
50.0 ug/L
B311076
Magnesium
1100
500
ug/L
B311076
Potassium
4570
500
ug/L
B311076
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 50 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sodium
Tin
Metals I CP MS
Metals ICP
91900
U
Sample II): 2311021 -Ml
1000 ug/L B311076
10.0 ug/L B311076
Aluminum
44.3
20.0
ug/L
B311080
Antimony
—
U
1.00
ug/L
B311080
Arsenic
...
U
1.00
ug/L
B311080
Barium
1.33
1.00
ug/L
B311080
Cadmium
...
U
1.00
ug/L
B311080
Chromium
...
U
2.00
ug/L
B311080
Copper
6.83
1.00
ug/L
B311080
Lead
...
U
1.00
ug/L
B311080
Manganese
5.55
1.00
ug/L
B311080
Nickel
...
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
4.84
2.00
ug/L
B311080
Sample II): 2311021-f>I
Calcium
2840
500
ug/L
B311076
Iron
293
50.0
ug/L
B311076
Magnesium
1100
500
ug/L
B311076
Potassium
4600
500
ug/L
B311076
Sodium
92600
1000
ug/L
B311076
Tin
...
U
10.0
ug/L
B311076
Metals I CP MS
Aluminum
44.1
20.0
ug/L
B311080
Antimony
...
U
1.00
ug/L
B311080
Arsenic
...
u
1.00
ug/L
B311080
Barium
1.37
1.00
ug/L
B311080
Cadmium
...
u
1.00
ug/L
B311080
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 51 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-(,I
Chromium
—
U
2.00
ug/L
B311080
Copper
24.2
1.00
ug/L
B311080
Lead
1.77
1.00
ug/L
B311080
Manganese
4.83
1.00
ug/L
B311080
Nickel
—
U
1.00
ug/L
B311080
Vanadium
...
U
1.00
ug/L
B311080
Zinc
13.7
2.00
ug/L
B311080
Sample II): 23ll02l-r.2
Calcium
3320
500
ug/L
B311077
Iron
96.7
50.0
ug/L
B311077
Magnesium
1020
500
ug/L
B311077
Potassium
4400
500
ug/L
B311077
Sodium
88200
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
30.5
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
u
1.00
ug/L
B311081
Barium
4.32
1.00
ug/L
B311081
Cadmium
...
u
1.00
ug/L
B311081
Chromium
...
u
2.00
ug/L
B311081
Copper
77.1
1.00
ug/L
B311081
Lead
18.4
1.00
ug/L
B311081
Manganese
1.43
1.00
ug/L
B311081
Nickel
90.4
1.00
ug/L
B311081
Vanadium
...
u
1.00
ug/L
B311081
Zinc
227
4.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 52 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 231
Calcium
3320
500
ug/L
B311077
Iron
110
50.0
ug/L
B311077
Magnesium
996
500
ug/L
B311077
Potassium
4440
500
ug/L
B311077
Sodium
88200
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Aluminum
...
U
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
U
1.00
ug/L
B311081
Barium
3.01
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
107
1.00
ug/L
B311081
Lead
6.73
1.00
ug/L
B311081
Manganese
1.21
1.00
ug/L
B311081
Nickel
6.56
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
27.0
2.00
ug/L
B311081
11):
Sample II): 23
II02M.4
Metals ICP
Calcium
3230
500
ug/L
B311077
Iron
155
50.0 ug/L
B311077
Magnesium
987
500
ug/L
B311077
Potassium
4360
500
ug/L
B311077
Sodium
86900
1000 ug/L
B311077
Tin
...
U
10.0 ug/L
B311077
54.7
20.0
ug/L B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 53 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-f.4
Antimony
—
U
1.00
ug/L
B311081
Arsenic
...
U
1.00
ug/L
B311081
Barium
3.09
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
50.5
1.00
ug/L
B311081
Lead
8.02
1.00
ug/L
B311081
Manganese
2.29
1.00
ug/L
B311081
Nickel
2.69
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
32.0
2.00
ug/L
B311081
Sample II): 231102l-f.5
Calcium
3230
500
ug/L
B311077
Iron
235
50.0
ug/L
B311077
Magnesium
984
500
ug/L
B311077
Potassium
4390
500
ug/L
B311077
Sodium
87500
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
69.3
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
U
1.00
ug/L
B311081
Barium
3.04
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
36.9
1.00
ug/L
B311081
Lead
5.03
1.00
ug/L
B311081
Manganese
3.07
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 54 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
1.33
20.7
U
3230
147
Sample II): 231102l-f.5
1.00
1.00
2.00
ug/L
ug/L
ug/L
B311081
B311081
B311081
Sample II): 2311021-f.f.
Calcium
3250
500
ug/L
B311077
Iron
181
50.0
ug/L
B311077
Magnesium
991
500
ug/L
B311077
Potassium
4430
500
ug/L
B311077
Sodium
88300
1000
ug/L
B311077
Tin
—
U
10.0
ug/L
B311077
s I CP MS
Aluminum
71.7
20.0
ug/L
B311081
Antimony
—
U
1.00
ug/L
B311081
Arsenic
...
U
1.00
ug/L
B311081
Barium
2.94
1.00
ug/L
B311081
Cadmium
...
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
29.8
1.00
ug/L
B311081
Lead
5.02
1.00
ug/L
B311081
Manganese
2.83
1.00
ug/L
B311081
Nickel
1.02
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
15.5
2.00
ug/L
B311081
Sample II): 2311021-f."
500
50.0
ug/L
ug/L
B311077
B311077
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 55 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 2311021-f."
Metals ICP
Magnesium
988
500
ug/L
B311077
Potassium
4370
500
ug/L
B311077
Sodium
87700
1000 ug/L
B311077
Tin
—
U
10.0 ug/L
B311077
Metals I CP MS
Aluminum
71.2
20.0 ug/L
B311081
Antimony
—
u
1.00 ug/L
B311081
Arsenic
...
u
1.00 ug/L
B311081
Barium
2.94
1.00 ug/L
B311081
Cadmium
...
u
1.00 ug/L
B311081
Chromium
...
u
2.00 ug/L
B311081
Copper
24.4
1.00 ug/L
B311081
Lead
3.14
1.00 ug/L
B311081
Manganese
2.68
1.00 ug/L
B311081
Nickel
...
u
1.00 ug/L
B311081
Vanadium
...
u
1.00 ug/L
B311081
Zinc
12.6
2.00 ug/L
B311081
11):
Sample II): 23
11021-f.S
Metals ICP
Calcium
3240
500
ug/L
B311077
Iron
154
50.0 ug/L
B311077
Magnesium
989
500
ug/L
B311077
Potassium
4410
500
ug/L
B311077
Sodium
87900
1000 ug/L
B311077
Tin
...
u
10.0 ug/L
B311077
Metals I CP MS
Aluminum
70.8
20.0 ug/L
B311081
Antimony
...
u
1.00 ug/L
B311081
Arsenic
...
u
1.00 ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 56 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 2311021-f.S
Barium
2.92
1.00
ug/L
B311081
Cadmium
—
U
1.00
ug/L
B311081
Chromium
...
U
2.00
ug/L
B311081
Copper
23.4
1.00
ug/L
B311081
Lead
2.88
1.00
ug/L
B311081
Manganese
2.66
1.00
ug/L
B311081
Nickel
...
U
1.00
ug/L
B311081
Vanadium
...
U
1.00
ug/L
B311081
Zinc
13.3
2.00
ug/L
B311081
Sample II): 2311021
Calcium
3270
500
ug/L
B311077
Iron
148
50.0
ug/L
B311077
Magnesium
990
500
ug/L
B311077
Potassium
4410
500
ug/L
B311077
Sodium
88100
1000
ug/L
B311077
Tin
...
U
10.0
ug/L
B311077
Metals I CP MS
Aluminum
71.8
20.0
ug/L
B311081
Antimony
...
U
1.00
ug/L
B311081
Arsenic
...
u
1.00
ug/L
B311081
Barium
2.96
1.00
ug/L
B311081
Cadmium
...
u
1.00
ug/L
B311081
Chromium
...
u
2.00
ug/L
B311081
Copper
23.8
1.00
ug/L
B311081
Lead
9.64
1.00
ug/L
B311081
Manganese
2.63
1.00
ug/L
B311081
Nickel
...
u
1.00
ug/L
B311081
Vanadium
...
u
1.00
ug/L
B311081
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 57 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Sample II): 2311021
23.0
2.00 ug/L B311081
Sample II): 231103^-01
Calcium
U
500
ug/L
B311106
Iron
U
50.0 ug/L
B311106
Magnesium
U
500
ug/L
B311106
Potassium
U
500
ug/L
B311106
Sodium
U
1000 ug/L
B311106
Tin
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
U
20.0 ug/L
B311107
Antimony
U
1.00 ug/L
B311107
Arsenic
U
1.00 ug/L
B311107
Barium
U
1.00 ug/L
B311107
Cadmium
U
1.00 ug/L
B311107
Chromium
U
2.00 ug/L
B311107
Copper
U
1.00 ug/L
B311107
Lead
U
1.00 ug/L
B311107
Manganese
U
1.00 ug/L
B311107
Nickel
U
1.00 ug/L
B311107
Vanadium
U
1.00 ug/L
B311107
Zinc
U
2.00 ug/L
B311107
II):
Sample II): 23
1103^-02
Metals ICP
Calcium
2250
500
ug/L
B311106
Iron
U
50.0 ug/L
B311106
Magnesium
1030
500
ug/L
B311106
Potassium
4550
500
ug/L
B311106
Sodium
91300
1000 ug/L
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 58 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Tin
Metals I CP MS
Metals ICP
U
Sample II): 231103^-02
10.0
ug/L
B311106
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
87.9
1.00
ug/L
B311107
Lead
3.40
1.00
ug/L
B311107
Manganese
...
U
1.00
ug/L
B311107
Nickel
4.02
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
2250
20.0
ug/L
B311107
Sample II): 231103^-03
Calcium
2350
500
ug/L
B311106
Iron
...
U
50.0
ug/L
B311106
Magnesium
1090
500
ug/L
B311106
Potassium
4570
500
ug/L
B311106
Sodium
91500
1000
ug/L
B311106
Tin
...
u
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
Chromium
...
u
2.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 59 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
¦ieltl II):
Sample II): 231103^-03
Metals I CP MS
Copper
179
1.00 ug/L
B311107
Lead
1.37
1.00 ug/L
B311107
Manganese
—
U
1.00 ug/L
B311107
Nickel
—
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
97.1
2.00 ug/L
B311107
II):
Sample II): 23
1103^-04
Metals ICP
Calcium
2110
500
ug/L
B311106
Iron
...
U
50.0 ug/L
B311106
Magnesium
978
500
ug/L
B311106
Potassium
4550
500
ug/L
B311106
Sodium
91200
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0 ug/L
B311107
Antimony
...
U
1.00 ug/L
B311107
Arsenic
...
U
1.00 ug/L
B311107
Barium
...
U
1.00 ug/L
B311107
Cadmium
...
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
240
1.00 ug/L
B311107
Lead
1.70
1.00 ug/L
B311107
Manganese
...
U
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
59.7
2.00 ug/L
B311107
Sample II): 231103'J-O?
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 60 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 23ll03')-0?
Calcium
2100
500
ug/L
B311106
Iron
...
U
50.0
ug/L
B311106
Magnesium
980
500
ug/L
B311106
Potassium
4560
500
ug/L
B311106
Sodium
91200
1000
ug/L
B311106
Tin
...
u
10.0
ug/L
B311106
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
420
2.00
ug/L
B311107
Lead
1.32
1.00
ug/L
B311107
Manganese
...
U
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
57.4
2.00
ug/L
B311107
II):
Sample II): 23
1103'J-ori
Metals ICP
Calcium
2190
500
ug/L
B311106
Iron
...
U
50.0 ug/L
B311106
Magnesium
1030
500
ug/L
B311106
Potassium
4510
500
ug/L
B311106
Sodium
91200
1000 ug/L
B311106
Tin
...
u
10.0 ug/L
B311106
U
20.0
ug/L
B311107
U.S.E.PA Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 61 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23ll03'J-0r.
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
465
2.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
...
U
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
22.8
2.00
ug/L
B311107
Sample II): 23ll03')-0-
Calcium
2670
500
ug/L
B311106
Iron
...
U
50.0
ug/L
B311106
Magnesium
1240
500
ug/L
B311106
Potassium
4560
500
ug/L
B311106
Sodium
91200
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
Chromium
...
u
2.00
ug/L
B311107
Copper
793
5.00
ug/L
B311107
Lead
...
u
1.00
ug/L
B311107
Manganese
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 62 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
"ield II):
Sample II): 23ll03')-0-
U
U
25.7
1.00 ug/L B311107
1.00 ug/L B311107
2.00 ug/L B311107
Sample II): 23II03'J-0H
Metals ICP
Calcium
2560
500
ug/L
B311106
Iron
...
U
50.0 ug/L
B311106
Magnesium
1180
500
ug/L
B311106
Potassium
4560
500
ug/L
B311106
Sodium
91200
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0 ug/L
B311107
Antimony
...
U
1.00 ug/L
B311107
Arsenic
...
U
1.00 ug/L
B311107
Barium
...
U
1.00 ug/L
B311107
Cadmium
...
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
637
5.00 ug/L
B311107
Lead
...
U
1.00 ug/L
B311107
Manganese
...
U
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
u
1.00 ug/L
B311107
Zinc
295
4.00 ug/L
B311107
II):
Sample II): 23
II03'J-
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Potassium
Sodium
Tin
Metals I CP MS
Metals ICP
4530
90700
U
Sample II): 23II03')-«W
500
1000
10.0
ug/L
ug/L
ug/L
B311106
B311106
B311106
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
993
5.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
...
U
1.00
ug/L
B311107
Nickel
2.85
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
220
2.00
ug/L
B311107
Sample II): 23II03'M0
Calcium
2300
500
ug/L
B311106
Iron
...
U
50.0
ug/L
B311106
Magnesium
1060
500
ug/L
B311106
Potassium
4570
500
ug/L
B311106
Sodium
91600
1000
ug/L
B311106
Tin
...
u
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 64 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Metals ICP
Calcium
Iron
Magnesium
3890
1010
U
Sample II): 23II03'M0
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
60.3
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
...
U
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
35.0
2.00
ug/L
B311107
Sample II): 231103'MI
500
50.0
500
ug/L
ug/L
ug/L
B311106
B311106
B311106
Potassium
4540
500
ug/L
B311106
Sodium
90700
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
124
1.00
ug/L
B311107
Lead
1.04
1.00
ug/L
B311107
Manganese
1.59
1.00
ug/L
B311107
Nickel
19.8
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
273
4.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the sampl
es as received on the date and at the time noted
Reported: 11/20/2023
Page 65 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals I CP MS
Aluminum
Sample II): 231103')-12
Calcium
3730
500
ug/L
B311106
Iron
58.6
50.0
ug/L
B311106
Magnesium
977
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
88400
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Aluminum
25.0
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
51.0
1.00
ug/L
B311107
Lead
2.34
1.00
ug/L
B311107
Manganese
2.57
1.00
ug/L
B311107
Nickel
8.04
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
671
10.0
ug/L
B311107
11):
Sample II): 23
1II13')-13
Metals ICP
Calcium
3840
500
ug/L
B311106
Iron
51.6
50.0 ug/L
B311106
Magnesium
1000
500
ug/L
B311106
Potassium
4500
500
ug/L
B311106
Sodium
90100
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
28.8
20.0
ug/L B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 66 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23II03'M3
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
98.5
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
1.25
1.00
ug/L
B311107
Nickel
5.17
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
158
2.00
ug/L
B311107
Sample II): 231103^-14
Calcium
3810
500
ug/L
B311106
Iron
110
50.0
ug/L
B311106
Magnesium
990
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
89000
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
32.2
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
315
2.00
ug/L
B311107
Lead
2.96
1.00
ug/L
B311107
Manganese
1.48
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 67 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
1.71
318
U
3940
105
Sample II): 23II03'M4
1.00
1.00
4.00
ug/L
ug/L
ug/L
B311107
B311107
B311107
Sample II): 231103'M?
Calcium
3860
500
ug/L
B311106
Iron
117
50.0
ug/L
B311106
Magnesium
1000
500
ug/L
B311106
Potassium
4540
500
ug/L
B311106
Sodium
90100
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
s I CP MS
Aluminum
22.8
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
4.49
2.00
ug/L
B311107
Copper
185
1.00
ug/L
B311107
Lead
4.35
1.00
ug/L
B311107
Manganese
1.52
1.00
ug/L
B311107
Nickel
5.86
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
675
10.0
ug/L
B311107
Sample II): 231103'Mr.
500
50.0
ug/L
ug/L
B311106
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 68 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Magnesium
Metals ICP
1030
Sample II): 231103'Mr.
500
ug/L
B311106
Potassium
4630
500
ug/L
B311106
Sodium
92000
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
35.0
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
3.96
2.00
ug/L
B311107
Copper
113
1.00
ug/L
B311107
Lead
2.53
1.00
ug/L
B311107
Manganese
1.46
1.00
ug/L
B311107
Nickel
3.80
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
365
4.00
ug/L
B311107
Sample II): 231103'M"
Calcium
3850
500
ug/L
B311106
Iron
70.5
50.0
ug/L
B311106
Magnesium
1000
500
ug/L
B311106
Potassium
4520
500
ug/L
B311106
Sodium
89500
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
34.8
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 69 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 231103'M"
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
103
1.00
ug/L
B311107
Lead
1.64
1.00
ug/L
B311107
Manganese
1.08
1.00
ug/L
B311107
Nickel
1.96
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
196
2.00
ug/L
B311107
Sample II): 231103'MH
Calcium
3910
500
ug/L
B311106
Iron
79.7
50.0
ug/L
B311106
Magnesium
1020
500
ug/L
B311106
Potassium
4530
500
ug/L
B311106
Sodium
90100
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
31.2
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
Chromium
...
u
2.00
ug/L
B311107
Copper
115
1.00
ug/L
B311107
Lead
1.74
1.00
ug/L
B311107
Manganese
1.06
1.00
ug/L
B311107
Nickel
2.40
1.00
ug/L
B311107
Vanadium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 70 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Sample II): 231103'MH
310
4.00
ug/L B311107
Sample II): 231103'J-1 •>
Calcium
3900
500
ug/L
B311106
Iron
125
50.0 ug/L
B311106
Magnesium
1020
500
ug/L
B311106
Potassium
4540
500
ug/L
B311106
Sodium
90300
1000 ug/L
B311106
Tin
—
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
39.1
20.0 ug/L
B311107
Antimony
—
U
1.00 ug/L
B311107
Arsenic
—
U
1.00 ug/L
B311107
Barium
—
U
1.00 ug/L
B311107
Cadmium
—
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
128
1.00 ug/L
B311107
Lead
1.80
1.00 ug/L
B311107
Manganese
1.50
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
125
2.00 ug/L
B311107
11):
Sample II): 23
H03'J-20
Metals ICP
Calcium
3870
500
ug/L
B311106
Iron
141
50.0 ug/L
B311106
Magnesium
1010
500
ug/L
B311106
Potassium
4540
500
ug/L
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 71 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sodium
Tin
Metals I CP MS
Metals ICP
90200
U
Sample II): 231103^-20
1000 ug/L B311106
10.0 ug/L B311106
Aluminum
39.9
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
86.8
1.00
ug/L
B311107
Lead
1.53
1.00
ug/L
B311107
Manganese
1.69
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
81.0
2.00
ug/L
B311107
Sample II): 231103^-21
Calcium
3840
500
ug/L
B311106
Iron
96.5
50.0
ug/L
B311106
Magnesium
1010
500
ug/L
B311106
Potassium
4470
500
ug/L
B311106
Sodium
89500
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
38.5
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 72 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Sample II): 231103^-21
Metals I CP MS
Chromium
...
U
2.00 ug/L
B311107
Copper
64.7
1.00 ug/L
B311107
Lead
1.16
1.00 ug/L
B311107
Manganese
1.48
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
64.1
2.00 ug/L
B311107
11):
Sample II): 23
1103^-22
Metals ICP
Calcium
3840
500
ug/L
B311106
Iron
81.4
50.0 ug/L
B311106
Magnesium
1010
500
ug/L
B311106
Potassium
4490
500
ug/L
B311106
Sodium
89100
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
34.8
20.0 ug/L
B311107
Antimony
...
U
1.00 ug/L
B311107
Arsenic
...
U
1.00 ug/L
B311107
Barium
...
U
1.00 ug/L
B311107
Cadmium
...
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
69.2
1.00 ug/L
B311107
Lead
1.11
1.00 ug/L
B311107
Manganese
1.34
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
60.3
2.00 ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 73 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 231103^-23
Calcium
3760
500
ug/L
B311111
Iron
2620
50.0
ug/L
B311111
Magnesium
945
500
ug/L
B311111
Potassium
4240
500
ug/L
B311111
Sodium
85200
1000
ug/L
B311111
Tin
12.4
10.0
ug/L
B311111
Metals I CP MS
Aluminum
98.8
20.0
ug/L
B311105
Antimony
—
U
1.00
ug/L
B311105
Arsenic
...
U
1.00
ug/L
B311105
Barium
1.73
1.00
ug/L
B311105
Cadmium
...
U
1.00
ug/L
B311105
Chromium
...
U
2.00
ug/L
B311105
Copper
432
2.00
ug/L
B311105
Lead
12.6
1.00
ug/L
B311105
Manganese
20.0
1.00
ug/L
B311105
Nickel
4.39
1.00
ug/L
B311105
Vanadium
...
U
1.00
ug/L
B311105
Zinc
190
2.00
ug/L
B311105
Sample II): 231103^-24
Calcium
3650
500
ug/L
B311111
Iron
5750
50.0
ug/L
B311111
Magnesium
991
500
ug/L
B311111
Potassium
4470
500
ug/L
B311111
Sodium
90100
1000
ug/L
B311111
Tin
21.3
10.0
ug/L
B311111
Metals I CP MS
Aluminum
166
20.0
ug/L
B311105
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 74 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 231103^-24
Antimony
—
U
1.00
ug/L
B311105
Arsenic
...
U
1.00
ug/L
B311105
Barium
3.01
1.00
ug/L
B311105
Cadmium
...
U
1.00
ug/L
B311105
Chromium
...
U
2.00
ug/L
B311105
Copper
950
5.00
ug/L
B311105
Lead
23.2
1.00
ug/L
B311105
Manganese
42.6
1.00
ug/L
B311105
Nickel
8.32
1.00
ug/L
B311105
Vanadium
...
U
1.00
ug/L
B311105
Zinc
270
4.00
ug/L
B311105
Sample II): 23ll03'J-2?
Calcium
3010
500
ug/L
B311111
Iron
1510
50.0
ug/L
B311111
Magnesium
928
500
ug/L
B311111
Potassium
4450
500
ug/L
B311111
Sodium
89900
1000
ug/L
B311111
Tin
...
U
10.0
ug/L
B311111
Metals I CP MS
Aluminum
74.5
20.0
ug/L
B311105
Antimony
...
U
1.00
ug/L
B311105
Arsenic
...
U
1.00
ug/L
B311105
Barium
1.17
1.00
ug/L
B311105
Cadmium
...
U
1.00
ug/L
B311105
Chromium
...
U
2.00
ug/L
B311105
Copper
251
2.00
ug/L
B311105
Lead
7.28
1.00
ug/L
B311105
Manganese
11.4
1.00
ug/L
B311105
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 75 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
2.69
89.1
U
2120
301
Sample II): 23H03'J-2?
1.00
1.00
2.00
ug/L
ug/L
ug/L
B311105
B311105
B311105
Sample II): 231103'J-2f.
Calcium
2980
500
ug/L
B311106
Iron
466
50.0
ug/L
B311106
Magnesium
957
500
ug/L
B311106
Potassium
4520
500
ug/L
B311106
Sodium
90300
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
s I CP MS
Aluminum
47.6
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
107
1.00
ug/L
B311107
Lead
2.49
1.00
ug/L
B311107
Manganese
3.68
1.00
ug/L
B311107
Nickel
1.14
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
47.3
2.00
ug/L
B311107
Sample II): 231103^-2"
500
50.0
ug/L
ug/L
B311106
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 76 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Magnesium
Sample II): 23H03'J-2"
631
500
ug/L
B311106
Potassium
4570
500
ug/L
B311106
Sodium
92600
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
3.64
1.00
ug/L
B311107
Lead
2.89
1.00
ug/L
B311107
Manganese
3.33
1.00
ug/L
B311107
Nickel
359
2.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
172
2.00
ug/L
B311107
11):
Sample II): 23
1103'J-2K
Metals ICP
Calcium
1960
500
ug/L
B311106
Iron
310
50.0 ug/L
B311106
Magnesium
594
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
90100
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0 ug/L
B311107
Antimony
...
u
1.00 ug/L
B311107
Arsenic
...
u
1.00 ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 77 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23II03'J-2H
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
3.37
1.00
ug/L
B311107
Lead
1.57
1.00
ug/L
B311107
Manganese
3.01
1.00
ug/L
B311107
Nickel
19.3
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
58.9
2.00
ug/L
B311107
Sample II): 23II03'J-2'J
Calcium
1940
500
ug/L
B311106
Iron
431
50.0
ug/L
B311106
Magnesium
574
500
ug/L
B311106
Potassium
4520
500
ug/L
B311106
Sodium
91800
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
20.8
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
Chromium
...
u
2.00
ug/L
B311107
Copper
3.60
1.00
ug/L
B311107
Lead
1.54
1.00
ug/L
B311107
Manganese
3.44
1.00
ug/L
B311107
Nickel
9.32
1.00
ug/L
B311107
Vanadium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 78 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
/.inc
Sample II): 23II03'J-2'J
18.1
2.00
ug/L B311107
Sample II): 231103^-30
Calcium
1960
500
ug/L
B311106
Iron
339
50.0 ug/L
B311106
Magnesium
576
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
90100
1000 ug/L
B311106
Tin
—
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
20.6
20.0 ug/L
B311107
Antimony
—
U
1.00 ug/L
B311107
Arsenic
—
U
1.00 ug/L
B311107
Barium
—
U
1.00 ug/L
B311107
Cadmium
—
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
2.88
1.00 ug/L
B311107
Lead
...
U
1.00 ug/L
B311107
Manganese
3.23
1.00 ug/L
B311107
Nickel
2.21
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
5.76
2.00 ug/L
B311107
11):
Sample II): 23
1103^-31
Metals ICP
Calcium
1990
500
ug/L
B311106
Iron
315
50.0 ug/L
B311106
Magnesium
582
500
ug/L
B311106
Potassium
4480
500
ug/L
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 79 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sodium
Tin
Metals I CP MS
Metals ICP
90600
U
Sample II): 231103^-31
1000 ug/L B311106
10.0 ug/L B311106
Aluminum
21.8
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
u
1.00
ug/L
B311107
Cadmium
—
u
1.00
ug/L
B311107
Chromium
...
u
2.00
ug/L
B311107
Copper
2.62
1.00
ug/L
B311107
Lead
...
u
1.00
ug/L
B311107
Manganese
3.44
1.00
ug/L
B311107
Nickel
1.57
1.00
ug/L
B311107
Vanadium
...
u
1.00
ug/L
B311107
Zinc
5.32
2.00
ug/L
B311107
Sample II): 231103^-32
Calcium
2000
500
ug/L
B311106
Iron
327
50.0
ug/L
B311106
Magnesium
579
500
ug/L
B311106
Potassium
4410
500
ug/L
B311106
Sodium
89900
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
21.0
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
Cadmium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 80 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
¦ieltl II):
Sample II): 231103^-32
Metals I CP MS
Chromium
...
U
2.00 ug/L
B311107
Copper
2.77
1.00 ug/L
B311107
Lead
...
U
1.00 ug/L
B311107
Manganese
3.36
1.00 ug/L
B311107
Nickel
1.28
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
5.38
2.00 ug/L
B311107
11):
Sample II): 23
1103^-33
Metals ICP
Calcium
2040
500
ug/L
B311106
Iron
386
50.0 ug/L
B311106
Magnesium
602
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
90200
1000 ug/L
B311106
Tin
...
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
20.4
20.0 ug/L
B311107
Antimony
...
U
1.00 ug/L
B311107
Arsenic
...
U
1.00 ug/L
B311107
Barium
...
U
1.00 ug/L
B311107
Cadmium
...
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
3.03
1.00 ug/L
B311107
Lead
...
U
1.00 ug/L
B311107
Manganese
4.11
1.00 ug/L
B311107
Nickel
1.10
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
5.99
2.00 ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 81 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals ICP
Sample II): 231103^-34
Calcium
2070
500
ug/L
B311106
Iron
321
50.0
ug/L
B311106
Magnesium
614
500
ug/L
B311106
Potassium
4470
500
ug/L
B311106
Sodium
90000
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.74
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
3.48
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
5.04
2.00
ug/L
B311107
Sample II): 23ll03'J-3?
Calcium
2050
500
ug/L
B311106
Iron
287
50.0
ug/L
B311106
Magnesium
605
500
ug/L
B311106
Potassium
4430
500
ug/L
B311106
Sodium
89500
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 82 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23II03'K3?
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.51
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
3.18
1.00
ug/L
B311107
Nickel
1.06
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
4.74
2.00
ug/L
B311107
Sample II): 23IHI3'J-3r.
Calcium
2090
500
ug/L
B311106
Iron
314
50.0
ug/L
B311106
Magnesium
611
500
ug/L
B311106
Potassium
4470
500
ug/L
B311106
Sodium
90600
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
20.0
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.48
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
3.39
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 83 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
Metals ICP
Metals ICP
Calcium
Iron
Magnesium
1.10
4.93
U
2110
424
626
Sample II): 23ll03'J-3r.
1.00
1.00
2.00
ug/L
ug/L
ug/L
B311107
B311107
B311107
Sample II): 23H03'J-3~
Calcium
2090
500
ug/L
B311106
Iron
325
50.0
ug/L
B311106
Magnesium
616
500
ug/L
B311106
Potassium
4470
500
ug/L
B311106
Sodium
90300
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
s I CP MS
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.19
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
3.69
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
4.64
2.00
ug/L
B311107
Sample II): 23II03'J-3H
500 ug/L B311106
50.0 ug/L B311106
500 ug/L B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 84 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 23II03'J-3H
Potassium
4490
500
ug/L
B311106
Sodium
90900
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.60
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
4.45
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
5.34
2.00
ug/L
B311107
Sample II): 23II03'J-3'J
Calcium
2110
500
ug/L
B311106
Iron
398
50.0
ug/L
B311106
Magnesium
629
500
ug/L
B311106
Potassium
4470
500
ug/L
B311106
Sodium
90500
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 85 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23II03'J-3'J
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
2.67
1.00
ug/L
B311107
Lead
...
U
1.00
ug/L
B311107
Manganese
4.46
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
6.02
2.00
ug/L
B311107
Sample II): 23II03'M0
Calcium
2300
500
ug/L
B311106
Iron
327
50.0
ug/L
B311106
Magnesium
938
500
ug/L
B311106
Potassium
4410
500
ug/L
B311106
Sodium
89100
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
5.77
2.00
ug/L
B311107
Copper
26.9
1.00
ug/L
B311107
Lead
3.35
1.00
ug/L
B311107
Manganese
2.70
1.00
ug/L
B311107
Nickel
59.7
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
195
2.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 86 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Sample II): 231103'MI
Calcium
2260
500
ug/L
B311106
Iron
283
50.0
ug/L
B311106
Magnesium
925
500
ug/L
B311106
Potassium
4430
500
ug/L
B311106
Sodium
89000
1000
ug/L
B311106
Tin
—
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
8.36
1.00
ug/L
B311107
Lead
1.28
1.00
ug/L
B311107
Manganese
2.66
1.00
ug/L
B311107
Nickel
4.27
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
104
2.00
ug/L
B311107
Sample II): 23II03'M2
Calcium
2340
500
ug/L
B311106
Iron
381
50.0
ug/L
B311106
Magnesium
957
500
ug/L
B311106
Potassium
4540
500
ug/L
B311106
Sodium
91000
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 87 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23II03'M2
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
12.6
1.00
ug/L
B311107
Lead
1.76
1.00
ug/L
B311107
Manganese
3.42
1.00
ug/L
B311107
Nickel
1.57
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
28.4
2.00
ug/L
B311107
Sample II): 231103^-43
Calcium
2260
500
ug/L
B311106
Iron
478
50.0
ug/L
B311106
Magnesium
932
500
ug/L
B311106
Potassium
4430
500
ug/L
B311106
Sodium
88800
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
14.5
1.00
ug/L
B311107
Lead
2.11
1.00
ug/L
B311107
Manganese
4.14
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 88 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
"ield II):
Sample II): 23II03'M3
U
U
16.3
1.00 ug/L B311107
1.00 ug/L B311107
2.00 ug/L B311107
Sample II): 231103^-44
Metals ICP
Calcium
2250
500
ug/L
B311106
Iron
627
50.0 ug/L
B311106
Magnesium
935
500
ug/L
B311106
Potassium
4450
500
ug/L
B311106
Sodium
89300
1000 ug/L
B311106
Tin
—
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
—
U
20.0 ug/L
B311107
Antimony
—
U
1.00 ug/L
B311107
Arsenic
—
U
1.00 ug/L
B311107
Barium
—
U
1.00 ug/L
B311107
Cadmium
—
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
20.9
1.00 ug/L
B311107
Lead
2.56
1.00 ug/L
B311107
Manganese
4.85
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
21.1
2.00 ug/L
B311107
II):
Sample II): 23
II03'M?
Metals ICP
Calcium
2250
500
ug/L
B311106
Iron
577
50.0 ug/L
B311106
Magnesium
936
500
ug/L
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 89 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Potassium
Sodium
Tin
Metals I CP MS
Metals ICP
4450
89400
U
Sample II): 231103'M?
500
1000
10.0
ug/L
ug/L
ug/L
B311106
B311106
B311106
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
21.9
1.00
ug/L
B311107
Lead
2.42
1.00
ug/L
B311107
Manganese
4.36
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
20.1
2.00
ug/L
B311107
Sample II): 231103'Mr.
Calcium
2320
500
ug/L
B311106
Iron
533
50.0
ug/L
B311106
Magnesium
970
500
ug/L
B311106
Potassium
4490
500
ug/L
B311106
Sodium
91300
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 90 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 231103'Mr.
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
19.0
1.00
ug/L
B311107
Lead
2.26
1.00
ug/L
B311107
Manganese
4.10
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
19.8
2.00
ug/L
B311107
Sample II): 231103'M"
Calcium
2300
500
ug/L
B311106
Iron
709
50.0
ug/L
B311106
Magnesium
963
500
ug/L
B311106
Potassium
4510
500
ug/L
B311106
Sodium
91000
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
21.9
1.00
ug/L
B311107
Lead
2.47
1.00
ug/L
B311107
Manganese
5.14
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
20.9
2.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 91 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Metals I CP MS
Metals ICP
Sample II): 231103'MH
Calcium
2330
500
ug/L
B311106
Iron
528
50.0
ug/L
B311106
Magnesium
978
500
ug/L
B311106
Potassium
4560
500
ug/L
B311106
Sodium
92100
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
18.8
1.00
ug/L
B311107
Lead
2.06
1.00
ug/L
B311107
Manganese
4.04
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
18.4
2.00
ug/L
B311107
Sample II): 231103'MS
Calcium
2330
500
ug/L
B311106
Iron
657
50.0
ug/L
B311106
Magnesium
977
500
ug/L
B311106
Potassium
4550
500
ug/L
B311106
Sodium
92200
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 92 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 231103'M'J
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
19.7
1.00
ug/L
B311107
Lead
2.11
1.00
ug/L
B311107
Manganese
6.17
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
19.3
2.00
ug/L
B311107
Sample II): 231103^-50
Calcium
2340
500
ug/L
B311106
Iron
889
50.0
ug/L
B311106
Magnesium
977
500
ug/L
B311106
Potassium
4550
500
ug/L
B311106
Sodium
92200
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
22.8
1.00
ug/L
B311107
Lead
2.24
1.00
ug/L
B311107
Manganese
6.28
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 93 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Nickel
Vanadium
Zinc
"ield II):
Sample II): 23ll03')-50
U
U
21.3
1.00 ug/L B311107
1.00 ug/L B311107
2.00 ug/L B311107
Sample II): 231103^-51
Metals ICP
Calcium
2330
500
ug/L
B311106
Iron
742
50.0 ug/L
B311106
Magnesium
978
500
ug/L
B311106
Potassium
4540
500
ug/L
B311106
Sodium
91900
1000 ug/L
B311106
Tin
—
U
10.0 ug/L
B311106
Metals I CP MS
Aluminum
—
U
20.0 ug/L
B311107
Antimony
—
U
1.00 ug/L
B311107
Arsenic
—
U
1.00 ug/L
B311107
Barium
—
U
1.00 ug/L
B311107
Cadmium
—
U
1.00 ug/L
B311107
Chromium
...
U
2.00 ug/L
B311107
Copper
21.7
1.00 ug/L
B311107
Lead
2.16
1.00 ug/L
B311107
Manganese
5.35
1.00 ug/L
B311107
Nickel
...
U
1.00 ug/L
B311107
Vanadium
...
U
1.00 ug/L
B311107
Zinc
20.8
2.00 ug/L
B311107
II):
Sample II): 23
1103*J-52
Metals ICP
Calcium
2330
500
ug/L
B311106
Iron
923
50.0 ug/L
B311106
Magnesium
972
500
ug/L
B311106
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 94 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals ICP
Potassium
Sodium
Tin
Metals I CP MS
Metals ICP
4510
91700
U
Sample II): 23ll03')-52
500
1000
10.0
ug/L
ug/L
ug/L
B311106
B311106
B311106
Aluminum
—
U
20.0
ug/L
B311107
Antimony
—
U
1.00
ug/L
B311107
Arsenic
—
U
1.00
ug/L
B311107
Barium
—
U
1.00
ug/L
B311107
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
23.1
1.00
ug/L
B311107
Lead
2.47
1.00
ug/L
B311107
Manganese
6.30
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
20.2
2.00
ug/L
B311107
Sample II): 23ll03'J-?3
Calcium
2340
500
ug/L
B311106
Iron
1090
50.0
ug/L
B311106
Magnesium
978
500
ug/L
B311106
Potassium
4560
500
ug/L
B311106
Sodium
92200
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
u
20.0
ug/L
B311107
Antimony
...
u
1.00
ug/L
B311107
Arsenic
...
u
1.00
ug/L
B311107
Barium
...
u
1.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 95 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Reporting
Date and Time
Analyte
Result
Qualifier
Limit
Units
Batch
of Analysis*
Metals I CP MS
Sample II): 23ll03')-53
Cadmium
—
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
30.7
1.00
ug/L
B311107
Lead
3.81
1.00
ug/L
B311107
Manganese
8.08
1.00
ug/L
B311107
Nickel
...
u
1.00
ug/L
B311107
Vanadium
...
u
1.00
ug/L
B311107
Zinc
25.2
2.00
ug/L
B311107
Sample II): 231103^-54
Calcium
2340
500
ug/L
B311106
Iron
782
50.0
ug/L
B311106
Magnesium
978
500
ug/L
B311106
Potassium
4500
500
ug/L
B311106
Sodium
92000
1000
ug/L
B311106
Tin
...
U
10.0
ug/L
B311106
Metals I CP MS
Aluminum
...
U
20.0
ug/L
B311107
Antimony
...
U
1.00
ug/L
B311107
Arsenic
...
U
1.00
ug/L
B311107
Barium
...
U
1.00
ug/L
B311107
Cadmium
...
U
1.00
ug/L
B311107
Chromium
...
U
2.00
ug/L
B311107
Copper
26.9
1.00
ug/L
B311107
Lead
4.87
1.00
ug/L
B311107
Manganese
5.71
1.00
ug/L
B311107
Nickel
...
U
1.00
ug/L
B311107
Vanadium
...
U
1.00
ug/L
B311107
Zinc
17.8
2.00
ug/L
B311107
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 96 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311076
Blank (B311076-BLK1)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
Blank (B311076-BLK2)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
LCS (B311076-BS1)
Calcium
4860
500
ug/L
5000
97.2
85-115
Iron
4960
50.0
ug/L
5000
99.2
85-115
Magnesium
4940
500
ug/L
5000
98.9
85-115
Potassium
4900
500
ug/L
5000
98.0
85-115
Sodium
4730
1000
ug/L
5000
94.6
85-115
Tin
196
10.0
ug/L
200.0
98.1
85-115
LCS (B311076-BS2)
Calcium
4810
500
ug/L
5000
96.2
85-115
Iron
4970
50.0
ug/L
5000
99.4
85-115
Magnesium
4940
500
ug/L
5000
98.9
85-115
Potassium
4940
500
ug/L
5000
98.7
85-115
Sodium
4770
1000
ug/L
5000
95.3
85-115
Tin
200
10.0
ug/L
200.0
100
85-115
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 97 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311076
LCS Pup (B311076-BSD1)
Calcium
4880
500
ug/L
5000
97.6
85-115
0.382
20
Iron
4980
50.0
ug/L
5000
99.6
85-115
0.392
20
Magnesium
4960
500
ug/L
5000
99.1
85-115
0.234
20
Potassium
4920
500
ug/L
5000
98.4
85-115
0.399
20
Sodium
4750
1000
ug/L
5000
95.0
85-115
0.512
20
Tin
198
10.0
ug/L
200.0
98.9
85-115
0.853
20
LCS Dup (B311076-BSD2)
Calcium
4790
500
ug/L
5000
95.8
85-115
0.465
20
Iron
4940
50.0
ug/L
5000
98.9
85-115
0.571
20
Magnesium
4910
500
ug/L
5000
98.3
85-115
0.611
20
Potassium
4920
500
ug/L
5000
98.3
85-115
0.396
20
Sodium
4740
1000
ug/L
5000
94.7
85-115
0.649
20
Tin
197
10.0
ug/L
200.0
98.6
85-115
1.46
20
Matrix Spike (B311076-MS1)
Source:
2311021-48
Calcium
8070
500
ug/L
5000
2860
104
80-120
Iron
5600
50.0
ug/L
5000
260
107
80-120
Magnesium
6340
500
ug/L
5000
1100
105
80-120
Potassium
9670
500
ug/L
5000
4570
102
80-120
Sodium
95500
1000
ug/L
5000
92300
63.5
80-120
Tin
223
10.0
ug/L
200.0
ND
112
80-120
Matrix Spike (B311076-MS2)
Source:
2311021-41
Calcium
8140
500
ug/L
5000
2930
104
80-120
Iron
5450
50.0
ug/L
5000
52.4
108
80-120
Magnesium
6300
500
ug/L
5000
1030
105
80-120
Potassium
9750
500
ug/L
5000
4640
102
80-120
Sodium
95700
1000
ug/L
5000
92800
57.5
80-120
Tin
225
10.0
ug/L
200.0
ND
112
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 98 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311076
Matrix Spike (B311076-MS3) Source: 2311021-19
Calcium
7770
500
ug/L
5000
2650
102
80-120
Iron
5320
50.0
ug/L
5000
72.4
105
80-120
Magnesium
6110
500
ug/L
5000
998
102
80-120
Potassium
9610
500
ug/L
5000
4570
101
80-120
Sodium
95100
1000
ug/L
5000
91600
71.1
80-120
Tin
221
10.0
ug/L
200.0
ND
111
80-120
Matrix Spike Dup (B311076-MSD1)
Source:
2311021-48
Calcium
7320
2500
ug/L
5000
2860
89.0
80-120
9.84
10
Iron
5080
250
ug/L
5000
260
96.4
80-120
9.66
10
Magnesium
5710
2500
ug/L
5000
1100
92.2
80-120
10.3
10
Potassium
9470
2500
ug/L
5000
4570
98.0
80-120
2.11
10
Sodium
89800
5000
ug/L
5000
92300
NR
80-120
6.19
10
Tin
201
50.0
ug/L
200.0
ND
101
80-120
10.2
10
Matrix Spike Dup (B311076-MSD2)
Source:
2311021-41
Calcium
7740
2500
ug/L
5000
2930
96.3
80-120
4.97
10
Iron
5190
250
ug/L
5000
52.4
103
80-120
4.85
10
Magnesium
6000
2500
ug/L
5000
1030
99.4
80-120
4.82
10
Potassium
9530
2500
ug/L
5000
4640
97.8
80-120
2.28
10
Sodium
93700
5000
ug/L
5000
92800
16.8
80-120
2.15
10
Tin
212
50.0
ug/L
200.0
ND
106
80-120
5.63
10
Matrix Spike Dup (B311076-MSD3)
Source:
2311021-19
Calcium
7040
2500
ug/L
5000
2650
87.8
80-120
9.80
10
Iron
4850
250
ug/L
5000
72.4
95.6
80-120
9.19
10
Magnesium
5550
2500
ug/L
5000
998
91.1
80-120
9.60
10
Potassium
9280
2500
ug/L
5000
4570
94.4
80-120
3.47
10
Sodium
89400
5000
ug/L
5000
91600
NR
80-120
6.22
10
Tin
210
50.0
ug/L
200.0
ND
105
80-120
5.04
10
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 99 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311077
Blank (B311077-BLK1)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
Blank (B311077-BLK2)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
LCS (B311077-BS1)
Calcium
4820
500
ug/L
5000
96.4
85-115
Iron
4840
50.0
ug/L
5000
96.9
85-115
Magnesium
4880
500
ug/L
5000
97.5
85-115
Potassium
4880
500
ug/L
5000
97.6
85-115
Sodium
4660
1000
ug/L
5000
93.2
85-115
Tin
190
10.0
ug/L
200.0
95.2
85-115
LCS (B311077-BS2)
Calcium
4880
500
ug/L
5000
97.6
85-115
Iron
4910
50.0
ug/L
5000
98.1
85-115
Magnesium
4940
500
ug/L
5000
98.7
85-115
Potassium
4970
500
ug/L
5000
99.4
85-115
Sodium
4760
1000
ug/L
5000
95.2
85-115
Tin
194
10.0
ug/L
200.0
96.8
85-115
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 100 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311077
LCS Dup (B311077-BSD1)
Calcium
4870
500
ug/L
5000
97.4
85-115
1.04
20
[ron
4900
50.0
ug/L
5000
98.0
85-115
1.11
20
Vlagnesium
4930
500
ug/L
5000
98.6
85-115
1.04
20
3otassium
4950
500
ug/L
5000
98.9
85-115
1.34
20
Sodium
4730
1000
ug/L
5000
94.5
85-115
1.47
20
Tin
194
10.0
ug/L
200.0
97.0
85-115
1.87
20
LCS Dup (B311077-BSD2)
Calcium
4790
500
ug/L
5000
95.8
85-115
1.88
20
[ron
4820
50.0
ug/L
5000
96.3
85-115
1.84
20
Vlagnesium
4840
500
ug/L
5000
96.8
85-115
1.95
20
3otassium
4890
500
ug/L
5000
97.8
85-115
1.65
20
Sodium
4670
1000
ug/L
5000
93.5
85-115
1.79
20
Tin
189
10.0
ug/L
200.0
94.5
85-115
2.35
20
Matrix Spike (B311077-MS1)
Source: 2311021-62
Calcium
8220
500
ug/L
5000
3320
98.0
80-120
[ron
5060
50.0
ug/L
5000
96.7
99.3
80-120
Vlagnesium
5960
500
ug/L
5000
1020
98.7
80-120
3otassium
9290
500
ug/L
5000
4400
97.7
80-120
Sodium
91100
1000
ug/L
5000
88200
57.6
80-120
Tin
210
10.0
ug/L
200.0
ND
105
80-120
Matrix Spike (B311077-MS2)
Source: 2311021-06
Calcium
7730
500
ug/L
5000
2900
96.6
80-120
[ron
5050
50.0
ug/L
5000
149
98.0
80-120
Vlagnesium
5820
500
ug/L
5000
969
96.9
80-120
3otassium
9190
500
ug/L
5000
4390
96.1
80-120
Sodium
88900
1000
ug/L
5000
86300
51.9
80-120
Tin
202
10.0
ug/L
200.0
ND
101
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 101 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311077
Matrix Spike (B311077-MS3)
Source: 2311021-21
Calcium
13400
500
ug/L
5000
8770
92.5
80-120
[ron
4940
50.0
ug/L
5000
34.7
98.1
80-120
Vlagnesium
5370
500
ug/L
5000
515
97.0
80-120
3otassium
9290
500
ug/L
5000
4480
96.2
80-120
Sodium
92400
1000
ug/L
5000
91100
27.6
80-120
Tin
201
10.0
ug/L
200.0
ND
101
80-120
Matrix Spike (B311077-MS4)
Source: 2311021-32
Calcium
7900
500
ug/L
5000
3100
96.0
80-120
[ron
7450
50.0
ug/L
5000
2710
94.9
80-120
Vlagnesium
5790
500
ug/L
5000
948
96.9
80-120
3otassium
9150
500
ug/L
5000
4400
95.0
80-120
Sodium
88600
1000
ug/L
5000
86800
37.3
80-120
Tin
202
10.0
ug/L
200.0
ND
101
80-120
Matrix Spike Dup (B311077-MSD1)
Source: 2311021-62
Calcium
7660
2500
ug/L
5000
3320
86.8
80-120
7.05
10
[ron
4730
250
ug/L
5000
96.7
92.6
80-120
6.86
10
Vlagnesium
5430
2500
ug/L
5000
1020
88.1
80-120
9.25
10
3otassium
9010
2500
ug/L
5000
4400
92.1
80-120
3.06
10
Sodium
87400
5000
ug/L
5000
88200
NR
80-120
4.13
10
Tin
191
50.0
ug/L
200.0
ND
95.6
80-120
9.52
10
Matrix Spike Dup (B311077-MSD2)
Source: 2311021-06
Calcium
7270
2500
ug/L
5000
2900
87.3
80-120
6.19
10
[ron
4740
250
ug/L
5000
149
91.9
80-120
6.22
10
Vlagnesium
5340
2500
ug/L
5000
969
87.5
80-120
8.47
10
3otassium
9070
2500
ug/L
5000
4390
93.6
80-120
1.35
10
Sodium
86000
5000
ug/L
5000
86300
NR
80-120
3.42
10
Tin
193
50.0
ug/L
200.0
ND
96.4
80-120
4.92
10
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 102 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311077
Matrix Spike Dup (B311077-MSD3)
Source:
2311021-21
Calcium
12200
2500
ug/L
5000
8770
68.1
80-120
9.55
10
Iron
4500
250
ug/L
5000
ND
89.9
80-120
9.37
10
Magnesium
4790
2500
ug/L
5000
515
85.6
80-120
11.3
10
Potassium
8910
2500
ug/L
5000
4480
88.8
80-120
4.10
10
Sodium
86900
5000
ug/L
5000
91100
NR
80-120
6.14
10
Tin
189
50.0
ug/L
200.0
ND
94.4
80-120
6.35
10
Matrix Spike Dup (B311077-MSD4)
Source:
2311021-32
Calcium
7510
2500
ug/L
5000
3100
88.2
80-120
5.09
10
Iron
7150
250
ug/L
5000
2710
88.7
80-120
4.22
10
Magnesium
5370
2500
ug/L
5000
948
88.5
80-120
7.51
10
Potassium
9000
2500
ug/L
5000
4400
91.9
80-120
1.70
10
Sodium
86900
5000
ug/L
5000
86800
2.94
80-120
1.96
10
Tin
194
50.0
ug/L
200.0
ND
97.1
80-120
4.05
10
Batch B311106
Blank (B311106-BLK1)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
Blank (B311106-BLK2)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin — U 10.0 ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 103 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD Limit
Batch B311106
Blank (B311106-BLK3)
Calcium
... u
500
ug/L
[ron
... u
50.0
ug/L
Vlagnesium
... u
500
ug/L
3otassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
LCS (B311106-BS1)
Calcium
4850
500
ug/L
5000
97.1
85-115
[ron
4880
50.0
ug/L
5000
97.7
85-115
Vlagnesium
4820
500
ug/L
5000
96.4
85-115
3otassium
4820
500
ug/L
5000
96.4
85-115
Sodium
4700
1000
ug/L
5000
94.0
85-115
Tin
185
10.0
ug/L
200.0
92.7
85-115
LCS (B311106-BS2)
Calcium
4940
500
ug/L
5000
98.7
85-115
[ron
5010
50.0
ug/L
5000
100
85-115
Vlagnesium
4920
500
ug/L
5000
98.4
85-115
3otassium
4930
500
ug/L
5000
98.6
85-115
Sodium
4880
1000
ug/L
5000
97.6
85-115
Tin
199
10.0
ug/L
200.0
99.7
85-115
LCS (B311106-BS3)
Calcium
4820
500
ug/L
5000
96.5
85-115
[ron
4900
50.0
ug/L
5000
98.0
85-115
Vlagnesium
4770
500
ug/L
5000
95.4
85-115
3otassium
4840
500
ug/L
5000
96.8
85-115
Sodium
4780
1000
ug/L
5000
95.5
85-115
Tin
193
10.0
ug/L
200.0
96.3
85-115
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023
Page 104 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311106
LCS Pup (B311106-BSD1)
Calcium
4890
500
ug/L
5000
97.8
85-115
0.745
20
Iron
4920
50.0
ug/L
5000
98.5
85-115
0.820
20
Magnesium
4870
500
ug/L
5000
97.4
85-115
1.00
20
Potassium
4870
500
ug/L
5000
97.3
85-115
0.969
20
Sodium
4730
1000
ug/L
5000
94.6
85-115
0.670
20
Tin
193
10.0
ug/L
200.0
96.6
85-115
4.15
20
LCS Dup (B311106-BSD2)
Calcium
4910
500
ug/L
5000
98.3
85-115
0.458
20
Iron
4980
50.0
ug/L
5000
99.6
85-115
0.486
20
Magnesium
4890
500
ug/L
5000
97.8
85-115
0.566
20
Potassium
4910
500
ug/L
5000
98.1
85-115
0.461
20
Sodium
4820
1000
ug/L
5000
96.5
85-115
1.17
20
Tin
199
10.0
ug/L
200.0
99.5
85-115
0.181
20
LCS Dup (B311106-BSD3)
Calcium
4790
500
ug/L
5000
95.8
85-115
0.682
20
Iron
4870
50.0
ug/L
5000
97.4
85-115
0.613
20
Magnesium
4740
500
ug/L
5000
94.9
85-115
0.558
20
Potassium
4800
500
ug/L
5000
96.0
85-115
0.821
20
Sodium
4730
1000
ug/L
5000
94.5
85-115
1.09
20
Tin
192
10.0
ug/L
200.0
96.2
85-115
0.156
20
Matrix Spike (B311106-MS1)
Source:
2311039-02
Calcium
7330
500
ug/L
5000
2250
102
80-120
Iron
5170
50.0
ug/L
5000
26.1
103
80-120
Magnesium
6030
500
ug/L
5000
1030
100
80-120
Potassium
9550
500
ug/L
5000
4550
100
80-120
Sodium
94000
1000
ug/L
5000
91300
53.9
80-120
Tin
209
10.0
ug/L
200.0
ND
104
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 105 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Analyte
Result
Reporting
Limit
Units
Spike
Level
Source
Result
%REC
%REC
Limits
RPD
RPD Limit
Batch B311106
Matrix Spike (B311106-MS2)
Source: 2311039-12
Calcium
8940
500
ug/L
5000
3730
104
80-120
[ron
5260
50.0
ug/L
5000
58.6
104
80-120
Vlagnesium
6020
500
ug/L
5000
977
101
80-120
3otassium
9600
500
ug/L
5000
4450
103
80-120
Sodium
94200
1000
ug/L
5000
88400
117
80-120
Tin
213
10.0
ug/L
200.0
ND
107
80-120
Matrix Spike (B311106-MS3)
Source: 2311039-22
Calcium
8990
500
ug/L
5000
3840
103
80-120
[ron
5320
50.0
ug/L
5000
81.4
105
80-120
Vlagnesium
6060
500
ug/L
5000
1010
101
80-120
3otassium
9590
500
ug/L
5000
4490
102
80-120
Sodium
93100
1000
ug/L
5000
89100
80.0
80-120
Tin
216
10.0
ug/L
200.0
ND
108
80-120
Matrix Spike (B311106-MS4)
Source: 2311039-35
Calcium
7160
500
ug/L
5000
2050
102
80-120
[ron
5500
50.0
ug/L
5000
287
104
80-120
Vlagnesium
5600
500
ug/L
5000
605
99.8
80-120
3otassium
9480
500
ug/L
5000
4430
101
80-120
Sodium
93000
1000
ug/L
5000
89500
68.8
80-120
Tin
213
10.0
ug/L
200.0
ND
107
80-120
Matrix Spike (B311106-MS5)
Source: 2311039-45
Calcium
7370
500
ug/L
5000
2250
102
80-120
[ron
5760
50.0
ug/L
5000
577
104
80-120
Vlagnesium
5960
500
ug/L
5000
936
100
80-120
3otassium
9450
500
ug/L
5000
4450
100
80-120
Sodium
93100
1000
ug/L
5000
89400
75.5
80-120
Tin
210
10.0
ug/L
200.0
ND
105
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 106 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311106
Matrix Spike (B31U06-MS6) Source: 2311039-54
Calcium
7610
500
ug/L
5000
2340
105
80-120
Iron
6090
50.0
ug/L
5000
782
106
80-120
Magnesium
6230
500
ug/L
5000
978
105
80-120
Potassium
9660
500
ug/L
5000
4500
103
80-120
Sodium
95600
1000
ug/L
5000
92000
72.3
80-120
Tin
221
10.0
ug/L
200.0
ND
110
80-120
Matrix Spike Dup (B311106-MSD1)
Source:
2311039-02
Calcium
6890
2500
ug/L
5000
2250
92.7
80-120
6.19
10
Iron
4860
250
ug/L
5000
ND
97.3
80-120
6.14
10
Magnesium
5580
2500
ug/L
5000
1030
91.1
80-120
7.70
10
Potassium
9360
2500
ug/L
5000
4550
96.2
80-120
2.05
10
Sodium
90700
5000
ug/L
5000
91300
NR
80-120
3.56
10
Tin
207
50.0
ug/L
200.0
ND
103
80-120
0.943
10
Matrix Spike Dup (B311106-MSD2)
Source:
2311039-12
Calcium
8290
2500
ug/L
5000
3730
91.2
80-120
7.55
10
Iron
4870
250
ug/L
5000
58.6
96.3
80-120
7.61
10
Magnesium
5530
2500
ug/L
5000
977
91.0
80-120
8.49
10
Potassium
9350
2500
ug/L
5000
4450
98.1
80-120
2.59
10
Sodium
90300
5000
ug/L
5000
88400
39.3
80-120
4.21
10
Tin
198
50.0
ug/L
200.0
ND
98.8
80-120
7.59
10
Matrix Spike Dup (B311106-MSD3)
Source:
2311039-22
Calcium
8630
2500
ug/L
5000
3840
95.8
80-120
4.08
10
Iron
5120
250
ug/L
5000
81.4
101
80-120
3.90
10
Magnesium
5760
2500
ug/L
5000
1010
95.2
80-120
4.96
10
Potassium
9470
2500
ug/L
5000
4490
99.7
80-120
1.20
10
Sodium
92600
5000
ug/L
5000
89100
70.2
80-120
0.527
10
Tin
208
50.0
ug/L
200.0
ND
104
80-120
3.98
10
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 107 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311106
Matrix Spike Pup (B31U06-MSD4) Source: 2311039-35
Calcium
6790
2500
ug/L
5000
2050
94.7
80-120
5.34
10
Iron
5200
250
ug/L
5000
287
98.3
80-120
5.62
10
Magnesium
5290
2500
ug/L
5000
605
93.6
80-120
5.69
10
Potassium
9350
2500
ug/L
5000
4430
98.4
80-120
1.34
10
Sodium
91200
5000
ug/L
5000
89500
32.4
80-120
1.98
10
Tin
203
50.0
ug/L
200.0
ND
101
80-120
5.10
10
Matrix Spike Dup (B311106-MSD5)
Source:
2311039-45
Calcium
6980
2500
ug/L
5000
2250
94.5
80-120
5.54
10
Iron
5410
250
ug/L
5000
577
96.7
80-120
6.22
10
Magnesium
5580
2500
ug/L
5000
936
92.8
80-120
6.62
10
Potassium
8930
2500
ug/L
5000
4450
89.7
80-120
5.61
10
Sodium
90600
5000
ug/L
5000
89400
24.8
80-120
2.76
10
Tin
203
50.0
ug/L
200.0
ND
101
80-120
3.28
10
Matrix Spike Dup (B311106-MSD6)
Source:
2311039-54
Calcium
7340
2500
ug/L
5000
2340
100
80-120
3.54
10
Iron
5880
250
ug/L
5000
782
102
80-120
3.56
10
Magnesium
5880
2500
ug/L
5000
978
98.1
80-120
5.80
10
Potassium
9560
2500
ug/L
5000
4500
101
80-120
1.08
10
Sodium
95500
5000
ug/L
5000
92000
70.5
80-120
0.0943
10
Tin
209
50.0
ug/L
200.0
ND
105
80-120
5.36
10
Batch B311111
Blank (B311111-BLK1)
Calcium
... u
500
ug/L
Iron
... u
50.0
ug/L
Magnesium
... u
500
ug/L
Potassium
... u
500
ug/L
Sodium
... u
1000
ug/L
Tin
... u
10.0
ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 108 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICP - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311111
LCS (B311111-BS1)
Calcium
4780
500
ug/L
5000
95.6
85-115
Iron
4890
50.0
ug/L
5000
97.8
85-115
Magnesium
4680
500
ug/L
5000
93.6
85-115
Potassium
4870
500
ug/L
5000
97.4
85-115
Sodium
4710
1000
ug/L
5000
94.2
85-115
Tin
196
10.0
ug/L
200.0
97.9
85-115
LCS Dup (B311111-BSD1)
Calcium
4770
500
ug/L
5000
95.4
85-115
0.231
20
Iron
4840
50.0
ug/L
5000
96.8
85-115
0.975
20
Magnesium
4640
500
ug/L
5000
92.7
85-115
0.941
20
Potassium
4830
500
ug/L
5000
96.6
85-115
0.841
20
Sodium
4660
1000
ug/L
5000
93.2
85-115
1.04
20
Tin
193
10.0
ug/L
200.0
96.3
85-115
1.64
20
Matrix Spike (B311111-MS1)
Source:
2311039-25
Calcium
7640
500
ug/L
5000
3010
92.6
80-120
Iron
6280
50.0
ug/L
5000
1510
95.3
80-120
Magnesium
5460
500
ug/L
5000
928
90.7
80-120
Potassium
9040
500
ug/L
5000
4450
91.9
80-120
Sodium
90500
1000
ug/L
5000
89900
11.0
80-120
Tin
200
10.0
ug/L
200.0
5.61
97.1
80-120
Matrix Spike Dup (B311111-MSD1)
Source:
2311039-25
Calcium
7680
2500
ug/L
5000
3010
93.4
80-120
0.484
10
Iron
6310
250
ug/L
5000
1510
95.9
80-120
0.441
10
Magnesium
5530
2500
ug/L
5000
928
92.1
80-120
1.25
10
Potassium
9240
2500
ug/L
5000
4450
95.8
80-120
2.13
10
Sodium
93300
5000
ug/L
5000
89900
68.8
80-120
3.15
10
Tin
207
50.0
ug/L
200.0
ND
103
80-120
3.30
10
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 109 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike Source
%REC
RPD
Analyte
Result
Limit
Units
Level Result %REC
Limits
RPD
Limit
Batch B311080
Blank (B311080-BLK1)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Vlanganese
... u
1.00
ug/L
Mickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
Blank (B311080-BLK2)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Vlanganese
... u
1.00
ug/L
Mickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
LCS (B311080-BS1)
Aluminum
470
20.0
ug/L
500.0 94.1
85-115
Antimony
47.8
1.00
ug/L
50.00 95.5
85-115
Arsenic
46.1
1.00
ug/L
50.00 92.1
85-115
Barium
46.3
1.00
ug/L
50.00 92.7
85-115
Cadmium
44.8
1.00
ug/L
50.00 89.7
85-115
Chromium
48.5
2.00
ug/L
50.00 96.9
85-115
Copper
47.9
1.00
ug/L
50.00 95.8
85-115
Lead
48.9
1.00
ug/L
50.00 97.7
85-115
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in
this report relate only to the samples as
received on the date and at the time noted
Reported: 11/20/2023
Page 110 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311080
LCS (B311080-BS1)
Manganese
48.7
1.00
ug/L
50.00
97.5
85-115
Nickel
48.6
1.00
ug/L
50.00
97.3
85-115
Vanadium
49.3
1.00
ug/L
50.00
98.5
85-115
Zinc
45.1
2.00
ug/L
50.00
90.3
85-115
LCS (B311080-BS2)
Aluminum
Antimony
Arsenic
Barium
Cadmium
Chromium
Copper
Lead
Manganese
Nickel
Vanadium
Zinc
LCS Pup (B311080-BSD1)
20
20
20
20
20
20
20
20
20
20
20
20
476
20.0
ug/L
500.0
95.2
85-115
46.5
1.00
ug/L
50.00
93.0
85-115
47.0
1.00
ug/L
50.00
93.9
85-115
47.0
1.00
ug/L
50.00
94.1
85-115
43.9
1.00
ug/L
50.00
87.8
85-115
48.3
2.00
ug/L
50.00
96.6
85-115
49.5
1.00
ug/L
50.00
99.1
85-115
48.4
1.00
ug/L
50.00
96.8
85-115
48.0
1.00
ug/L
50.00
96.0
85-115
50.4
1.00
ug/L
50.00
101
85-115
49.4
1.00
ug/L
50.00
98.9
85-115
44.2
2.00
ug/L
50.00
88.4
85-115
Aluminum
470
20.0
ug/L
500.0
93.9
85-
115
0.148
Antimony
47.5
1.00
ug/L
50.00
95.0
85-
115
0.535
Arsenic
45.6
1.00
ug/L
50.00
91.3
85-
115
0.966
Barium
45.9
1.00
ug/L
50.00
91.8
85-
115
0.872
Cadmium
44.8
1.00
ug/L
50.00
89.5
85-
115
0.127
Chromium
48.5
2.00
ug/L
50.00
97.1
85-
115
0.159
Copper
48.1
1.00
ug/L
50.00
96.3
85-
115
0.531
Lead
48.7
1.00
ug/L
50.00
97.5
85-
115
0.240
Manganese
48.5
1.00
ug/L
50.00
97.0
85-
115
0.479
Nickel
48.7
1.00
ug/L
50.00
97.5
85-
115
0.197
Vanadium
49.4
1.00
ug/L
50.00
98.7
85-
115
0.193
Zinc
45.2
2.00
ug/L
50.00
90.3
85-
115
0.0886
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 111 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311080
LCS Pup (B311080-BSD2)
Aluminum
480
20.0
ug/L
500.0
96.1
85-115
0.850
20
Antimony
47.7
1.00
ug/L
50.00
95.4
85-115
2.53
20
Arsenic
47.4
1.00
ug/L
50.00
94.8
85-115
0.905
20
Barium
47.5
1.00
ug/L
50.00
94.9
85-115
0.887
20
Cadmium
44.2
1.00
ug/L
50.00
88.4
85-115
0.670
20
Chromium
48.8
2.00
ug/L
50.00
97.6
85-115
1.05
20
Copper
49.8
1.00
ug/L
50.00
99.6
85-115
0.560
20
Lead
49.0
1.00
ug/L
50.00
97.9
85-115
1.17
20
Manganese
48.3
1.00
ug/L
50.00
96.7
85-115
0.677
20
Nickel
50.6
1.00
ug/L
50.00
101
85-115
0.325
20
Vanadium
50.0
1.00
ug/L
50.00
99.9
85-115
1.03
20
Zinc
44.7
2.00
ug/L
50.00
89.4
85-115
1.12
20
Matrix Spike (B311080-MS1)
Source: 2311021-48
Aluminum
515
20.0
ug/L
500.0
44.4
94.1
80-120
Antimony
49.0
1.00
ug/L
50.00
ND
98.0
80-120
Arsenic
48.0
1.00
ug/L
50.00
0.140
95.6
80-120
Barium
48.1
1.00
ug/L
50.00
1.32
93.6
80-120
Cadmium
45.1
1.00
ug/L
50.00
ND
90.2
80-120
Chromium
47.6
2.00
ug/L
50.00
ND
95.1
80-120
Copper
54.0
1.00
ug/L
50.00
7.31
93.5
80-120
Lead
50.0
1.00
ug/L
50.00
0.398
99.2
80-120
Manganese
51.3
1.00
ug/L
50.00
4.30
93.9
80-120
Nickel
49.8
1.00
ug/L
50.00
3.28
93.0
80-120
Vanadium
50.1
1.00
ug/L
50.00
ND
100
80-120
Zinc
75.9
2.00
ug/L
50.00
26.8
98.3
80-120
Matrix Spike (B311080-MS2)
Source: 2311021-41
Aluminum
484
20.0
ug/L
500.0
8.38
95.2
80-120
Antimony
48.5
1.00
ug/L
50.00
ND
97.0
80-120
Arsenic
48.4
1.00
ug/L
50.00
0.322
96.1
80-120
Barium
48.1
1.00
ug/L
50.00
0.365
95.4
80-120
Cadmium
44.5
1.00
ug/L
50.00
0.105
88.8
80-120
Chromium
47.9
2.00
ug/L
50.00
ND
95.8
80-120
Copper
56.6
1.00
ug/L
50.00
9.21
94.7
80-120
Lead
51.9
1.00
ug/L
50.00
2.26
99.2
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 112 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311080
Matrix Spike (B311080-MS2) Source: 2311021-41
Manganese
48.1
1.00
ug/L
50.00
1.32
93.5
80-120
Nickel
49.5
1.00
ug/L
50.00
2.23
94.5
80-120
Vanadium
50.2
1.00
ug/L
50.00
ND
100
80-120
Zinc
696
10.0
ug/L
50.00
652
88.4
80-120
Matrix Spike (B311080-MS3)
Source:
2311021-19
Aluminum
489
20.0
ug/L
500.0
15.1
94.8
80-120
Antimony
49.4
1.00
ug/L
50.00
ND
98.8
80-120
Arsenic
48.5
1.00
ug/L
50.00
0.228
96.6
80-120
Barium
47.4
1.00
ug/L
50.00
0.376
94.1
80-120
Cadmium
44.3
1.00
ug/L
50.00
ND
88.7
80-120
Chromium
47.4
2.00
ug/L
50.00
ND
94.8
80-120
Copper
51.0
1.00
ug/L
50.00
3.95
94.1
80-120
Lead
50.3
1.00
ug/L
50.00
0.551
99.5
80-120
Manganese
49.1
1.00
ug/L
50.00
2.46
93.3
80-120
Nickel
48.0
1.00
ug/L
50.00
0.391
95.2
80-120
Vanadium
50.2
1.00
ug/L
50.00
ND
100
80-120
Zinc
57.9
2.00
ug/L
50.00
14.7
86.5
80-120
Batch B311081
Blank (B311081-BLK1)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Manganese
... u
1.00
ug/L
Nickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 113 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311081
LCS (B311081-BS1)
Aluminum
474
20.0
ug/L
500.0
94.8
85-
115
Antimony
47.9
1.00
ug/L
50.00
95.7
85-
115
Arsenic
46.4
1.00
ug/L
50.00
92.9
85-
115
Barium
47.0
1.00
ug/L
50.00
94.1
85-
115
Cadmium
46.5
1.00
ug/L
50.00
93.0
85-
115
Chromium
48.8
2.00
ug/L
50.00
97.6
85-
115
Copper
48.6
1.00
ug/L
50.00
97.1
85-
115
Lead
49.1
1.00
ug/L
50.00
98.2
85-
115
Manganese
48.9
1.00
ug/L
50.00
97.7
85-
115
Nickel
49.4
1.00
ug/L
50.00
98.7
85-
115
Vanadium
49.4
1.00
ug/L
50.00
98.9
85-
115
Zinc
46.6
2.00
ug/L
50.00
93.3
85-
115
LCS Dup (B311081-BSD1)
Aluminum
467
20.0
ug/L
500.0
93.4
85
115
1.48
20
Antimony
46.9
1.00
ug/L
50.00
93.8
85
115
2.02
20
Arsenic
46.0
1.00
ug/L
50.00
92.0
85
115
0.985
20
Barium
46.0
1.00
ug/L
50.00
92.1
85
115
2.16
20
Cadmium
45.6
1.00
ug/L
50.00
91.2
85
115
1.90
20
Chromium
48.2
2.00
ug/L
50.00
96.3
85
115
1.35
20
Copper
47.8
1.00
ug/L
50.00
95.7
85
115
1.49
20
Lead
47.8
1.00
ug/L
50.00
95.7
85
115
2.60
20
Manganese
48.0
1.00
ug/L
50.00
96.0
85
115
1.82
20
Nickel
48.4
1.00
ug/L
50.00
96.9
85
115
1.88
20
Vanadium
48.4
1.00
ug/L
50.00
96.8
85
115
2.14
20
Zinc
45.8
2.00
ug/L
50.00
91.6
85
115
1.75
20
Matrix Spike (B311081-MS1)
Source:
2311021-62
Aluminum
493
20.0
ug/L
500.0
30.5
92.6
80
120
Antimony
49.5
1.00
ug/L
50.00
ND
99.0
80
120
Arsenic
48.4
1.00
ug/L
50.00
0.271
96.2
80
120
Barium
51.2
1.00
ug/L
50.00
4.32
93.7
80
120
Cadmium
46.3
1.00
ug/L
50.00
ND
92.6
80
120
Chromium
48.1
2.00
ug/L
50.00
0.684
94.8
80
120
Copper
121
1.00
ug/L
50.00
77.1
87.0
80
120
Lead
68.2
1.00
ug/L
50.00
18.4
99.5
80
120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 114 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311081
Matrix Spike (B311081-MS1) Source: 2311021-62
Manganese
48.2
1.00
ug/L
50.00
1.43
93.5
80-120
Nickel
133
1.00
ug/L
50.00
90.4
85.2
80-120
Vanadium
49.5
1.00
ug/L
50.00
ND
98.9
80-120
Zinc
269
4.00
ug/L
50.00
227
83.6
80-120
Matrix Spike (B311081-MS2)
Source:
2311021-06
Aluminum
594
20.0
ug/L
500.0
121
94.8
80-120
Antimony
49.5
1.00
ug/L
50.00
ND
99.0
80-120
Arsenic
49.1
1.00
ug/L
50.00
0.714
96.7
80-120
Barium
49.0
1.00
ug/L
50.00
1.26
95.5
80-120
Cadmium
46.6
1.00
ug/L
50.00
ND
93.3
80-120
Chromium
48.1
2.00
ug/L
50.00
0.297
95.6
80-120
Copper
73.9
1.00
ug/L
50.00
28.5
90.8
80-120
Lead
52.5
1.00
ug/L
50.00
2.44
100
80-120
Manganese
49.2
1.00
ug/L
50.00
2.00
94.3
80-120
Nickel
47.3
1.00
ug/L
50.00
0.565
93.5
80-120
Vanadium
50.3
1.00
ug/L
50.00
0.579
99.4
80-120
Zinc
75.9
2.00
ug/L
50.00
27.0
97.8
80-120
Batch B311084
Blank (B311084-BLK1)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Manganese
... u
1.00
ug/L
Nickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 115 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311084
LCS (B311084-BS1)
Aluminum
475
20.0
ug/L
500.0
95.1
85-
115
Antimony
48.0
1.00
ug/L
50.00
96.0
85-
115
Arsenic
46.8
1.00
ug/L
50.00
93.6
85-
115
Barium
47.2
1.00
ug/L
50.00
94.5
85-
115
Cadmium
45.9
1.00
ug/L
50.00
91.8
85-
115
Chromium
48.4
2.00
ug/L
50.00
96.7
85-
115
Copper
48.6
1.00
ug/L
50.00
97.3
85-
115
Lead
48.7
1.00
ug/L
50.00
97.3
85-
115
Manganese
48.5
1.00
ug/L
50.00
97.0
85-
115
Nickel
49.2
1.00
ug/L
50.00
98.5
85-
115
Vanadium
48.8
1.00
ug/L
50.00
97.7
85-
115
Zinc
46.0
2.00
ug/L
50.00
92.0
85-
115
LCS Dup (B311084-BSD1)
Aluminum
478
20.0
ug/L
500.0
95.6
85
115
0.559
20
Antimony
47.8
1.00
ug/L
50.00
95.6
85
115
0.461
20
Arsenic
47.1
1.00
ug/L
50.00
94.2
85
115
0.613
20
Barium
47.2
1.00
ug/L
50.00
94.3
85
115
0.129
20
Cadmium
45.9
1.00
ug/L
50.00
91.8
85
115
0.0414
20
Chromium
48.7
2.00
ug/L
50.00
97.3
85
115
0.653
20
Copper
49.1
1.00
ug/L
50.00
98.2
85
115
0.960
20
Lead
49.1
1.00
ug/L
50.00
98.2
85
115
0.861
20
Manganese
48.4
1.00
ug/L
50.00
96.8
85
115
0.142
20
Nickel
49.5
1.00
ug/L
50.00
99.0
85
115
0.555
20
Vanadium
49.2
1.00
ug/L
50.00
98.4
85
115
0.793
20
Zinc
46.3
2.00
ug/L
50.00
92.7
85
115
0.721
20
Matrix Spike (B311084-MS1)
Source:
2311021-32
Aluminum
503
20.0
ug/L
500.0
32.3
94.0
80
120
Antimony
49.1
1.00
ug/L
50.00
ND
98.1
80
120
Arsenic
47.8
1.00
ug/L
50.00
0.316
95.0
80
120
Barium
47.8
1.00
ug/L
50.00
0.643
94.4
80
120
Cadmium
45.8
1.00
ug/L
50.00
0.095
91.4
80
120
Chromium
47.4
2.00
ug/L
50.00
0.203
94.4
80
120
Copper
189
1.00
ug/L
50.00
147
84.2
80
120
Lead
78.4
1.00
ug/L
50.00
28.8
99.1
80
120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 116 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311084
Matrix Spike (B311084-MS1) Source: 2311021-32
Manganese
73.1
1.00
ug/L
50.00
26.8
92.6
80-120
Nickel
48.7
1.00
ug/L
50.00
2.02
93.4
80-120
Vanadium
49.4
1.00
ug/L
50.00
ND
98.8
80-120
Zinc
915
10.0
ug/L
50.00
856
118
80-120
Matrix Spike (B311084-MS2)
Source:
2311021-21
Aluminum
553
20.0
ug/L
500.0
87.5
93.0
80-120
Antimony
49.3
1.00
ug/L
50.00
ND
98.5
80-120
Arsenic
48.1
1.00
ug/L
50.00
0.403
95.3
80-120
Barium
52.7
1.00
ug/L
50.00
6.09
93.3
80-120
Cadmium
46.0
1.00
ug/L
50.00
ND
92.0
80-120
Chromium
47.7
2.00
ug/L
50.00
0.484
94.4
80-120
Copper
46.7
1.00
ug/L
50.00
0.816
91.9
80-120
Lead
49.3
1.00
ug/L
50.00
ND
98.6
80-120
Manganese
46.9
1.00
ug/L
50.00
0.501
92.8
80-120
Nickel
46.8
1.00
ug/L
50.00
0.847
91.9
80-120
Vanadium
49.8
1.00
ug/L
50.00
0.527
98.6
80-120
Zinc
84.4
2.00
ug/L
50.00
36.7
95.6
80-120
Batch B311105
Blank (B311105-BLK1)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Manganese
... u
1.00
ug/L
Nickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 117 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311105
LCS (B311105-BS1)
Aluminum
488
20.0
ug/L
500.0
97.7
85-
115
Antimony
52.0
1.00
ug/L
50.00
104
85-
115
Arsenic
48.0
1.00
ug/L
50.00
96.0
85-
115
Barium
48.5
1.00
ug/L
50.00
97.0
85-
115
Cadmium
49.4
1.00
ug/L
50.00
98.9
85-
115
Chromium
52.5
2.00
ug/L
50.00
105
85-
115
Copper
49.4
1.00
ug/L
50.00
98.8
85-
115
Lead
52.6
1.00
ug/L
50.00
105
85-
115
Manganese
52.4
1.00
ug/L
50.00
105
85-
115
Nickel
50.1
1.00
ug/L
50.00
100
85-
115
Vanadium
52.5
1.00
ug/L
50.00
105
85-
115
Zinc
49.4
2.00
ug/L
50.00
98.8
85-
115
LCS Dup (B311105-BSD1)
Aluminum
478
20.0
ug/L
500.0
95.7
85
115
2.03
20
Antimony
51.2
1.00
ug/L
50.00
102
85
115
1.62
20
Arsenic
47.5
1.00
ug/L
50.00
95.0
85
115
1.04
20
Barium
47.7
1.00
ug/L
50.00
95.4
85
115
1.66
20
Cadmium
49.0
1.00
ug/L
50.00
98.0
85
115
0.861
20
Chromium
51.5
2.00
ug/L
50.00
103
85
115
1.82
20
Copper
48.1
1.00
ug/L
50.00
96.2
85
115
2.57
20
Lead
51.6
1.00
ug/L
50.00
103
85
115
1.94
20
Manganese
51.1
1.00
ug/L
50.00
102
85
115
2.54
20
Nickel
49.1
1.00
ug/L
50.00
98.1
85
115
2.05
20
Vanadium
51.4
1.00
ug/L
50.00
103
85
115
2.15
20
Zinc
48.2
2.00
ug/L
50.00
96.3
85
115
2.49
20
Matrix Spike (B311105-MS1)
Source:
2311039-25
Aluminum
556
20.0
ug/L
500.0
74.5
96.3
80
120
Antimony
52.8
1.00
ug/L
50.00
ND
106
80
120
Arsenic
47.4
1.00
ug/L
50.00
ND
94.8
80
120
Barium
48.5
1.00
ug/L
50.00
1.17
94.6
80
120
Cadmium
49.0
1.00
ug/L
50.00
ND
98.0
80
120
Chromium
51.3
2.00
ug/L
50.00
0.809
101
80
120
Copper
295
2.00
ug/L
50.00
251
88.2
80
120
Lead
59.0
1.00
ug/L
50.00
7.28
103
80
120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 118 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311105
Matrix Spike (B31U05-MS1) Source: 2311039-25
Manganese
60.9
1.00
ug/L
50.00
11.4
99.0
80-120
Nickel
50.4
1.00
ug/L
50.00
2.69
95.4
80-120
Vanadium
52.7
1.00
ug/L
50.00
ND
105
80-120
Zinc
136
2.00
ug/L
50.00
89.1
94.4
80-120
Batch B311107
Blank (B311107-BLK1)
Aluminum
... u
20.0
Ug/L
Antimony
... u
1.00
Ug/L
Arsenic
... u
1.00
Ug/L
Barium
... u
1.00
Ug/L
Cadmium
... u
1.00
Ug/L
Chromium
... u
2.00
Ug/L
Copper
... u
1.00
Ug/L
Lead
... u
1.00
Ug/L
Manganese
... u
1.00
Ug/L
Nickel
... u
1.00
Ug/L
Vanadium
... u
1.00
Ug/L
Zinc
... u
2.00
Ug/L
Blank (B311107-BLK2)
Aluminum
... u
20.0
Ug/L
Antimony
... u
1.00
Ug/L
Arsenic
... u
1.00
Ug/L
Barium
... u
1.00
Ug/L
Cadmium
... u
1.00
Ug/L
Chromium
... u
2.00
Ug/L
Copper
... u
1.00
Ug/L
Lead
... u
1.00
Ug/L
Manganese
... u
1.00
Ug/L
Nickel
... u
1.00
Ug/L
Vanadium
... u
1.00
Ug/L
Zinc
... u
2.00
Ug/L
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11 /20/2023 Page 119 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311107
Blank (B311107-BLK3)
Aluminum
... u
20.0
ug/L
Antimony
... u
1.00
ug/L
Arsenic
... u
1.00
ug/L
Barium
... u
1.00
ug/L
Cadmium
... u
1.00
ug/L
Chromium
... u
2.00
ug/L
Copper
... u
1.00
ug/L
Lead
... u
1.00
ug/L
Manganese
... u
1.00
ug/L
Nickel
... u
1.00
ug/L
Vanadium
... u
1.00
ug/L
Zinc
... u
2.00
ug/L
LCS (B311107-BS1)
Aluminum
472
20.0
ug/L
500.0
94.3
85-115
Antimony
46.4
1.00
ug/L
50.00
92.8
85-115
Arsenic
46.8
1.00
ug/L
50.00
93.5
85-115
Barium
46.5
1.00
ug/L
50.00
93.1
85-115
Cadmium
44.6
1.00
ug/L
50.00
89.2
85-115
Chromium
47.2
2.00
ug/L
50.00
94.3
85-115
Copper
47.1
1.00
ug/L
50.00
94.2
85-115
Lead
48.2
1.00
ug/L
50.00
96.3
85-115
Manganese
47.5
1.00
ug/L
50.00
95.0
85-115
Nickel
48.1
1.00
ug/L
50.00
96.3
85-115
Vanadium
48.1
1.00
ug/L
50.00
96.2
85-115
Zinc
44.8
2.00
ug/L
50.00
89.6
85-115
LCS (B311107-BS2)
Aluminum
472
20.0
ug/L
500.0
94.3
85-115
Antimony
46.8
1.00
ug/L
50.00
93.5
85-115
Arsenic
45.9
1.00
ug/L
50.00
91.8
85-115
Barium
46.4
1.00
ug/L
50.00
92.8
85-115
Cadmium
44.4
1.00
ug/L
50.00
88.8
85-115
Chromium
47.5
2.00
ug/L
50.00
94.9
85-115
Copper
47.9
1.00
ug/L
50.00
95.9
85-115
Lead
48.2
1.00
ug/L
50.00
96.4
85-115
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 120 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311107
LCS (B311107-BS2)
Vlanganese
47.6
1.00
ug/L
50.00
95.2
85-115
Mickel
48.3
1.00
ug/L
50.00
96.5
85-115
Vanadium
48.2
1.00
ug/L
50.00
96.4
85-115
Zinc
45.1
2.00
ug/L
50.00
90.3
85-115
LCS (B311107-BS3)
Aluminum
478
20.0
ug/L
500.0
95.7
85-115
Antimony
47.1
1.00
ug/L
50.00
94.2
85-115
Arsenic
47.4
1.00
ug/L
50.00
94.7
85-115
Barium
47.6
1.00
ug/L
50.00
95.2
85-115
Cadmium
45.5
1.00
ug/L
50.00
91.0
85-115
Chromium
48.3
2.00
ug/L
50.00
96.5
85-115
Copper
48.4
1.00
ug/L
50.00
96.7
85-115
Lead
48.6
1.00
ug/L
50.00
97.2
85-115
Vlanganese
48.0
1.00
ug/L
50.00
96.0
85-115
Mickel
49.0
1.00
ug/L
50.00
98.0
85-115
Vanadium
48.5
1.00
ug/L
50.00
97.1
85-115
Zinc
45.8
2.00
ug/L
50.00
91.7
85-115
LCS Dup (B311107-BSD1)
Aluminum
477
20.0
ug/L
500.0
95.3
85-115
1.03
20
Antimony
47.3
1.00
ug/L
50.00
94.7
85-115
1.94
20
Arsenic
46.9
1.00
ug/L
50.00
93.8
85-115
0.290
20
Barium
46.8
1.00
ug/L
50.00
93.7
85-115
0.604
20
Cadmium
45.0
1.00
ug/L
50.00
90.0
85-115
0.886
20
Chromium
47.6
2.00
ug/L
50.00
95.1
85-115
0.834
20
Copper
48.1
1.00
ug/L
50.00
96.2
85-115
2.03
20
Lead
48.6
1.00
ug/L
50.00
97.2
85-115
0.953
20
Vlanganese
48.0
1.00
ug/L
50.00
95.9
85-115
0.991
20
Mickel
48.4
1.00
ug/L
50.00
96.7
85-115
0.458
20
Vanadium
48.4
1.00
ug/L
50.00
96.8
85-115
0.601
20
Zinc
45.3
2.00
ug/L
50.00
90.6
85-115
1.10
20
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 121 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311107
LCS Pup (B311107-BSD2)
Aluminum
473
20.0
ug/L
500.0
94.7
85
115
0.387
20
Antimony
47.2
1.00
ug/L
50.00
94.4
85
115
0.947
20
Arsenic
47.1
1.00
ug/L
50.00
94.3
85
115
2.62
20
Barium
47.1
1.00
ug/L
50.00
94.2
85
115
1.43
20
Cadmium
45.7
1.00
ug/L
50.00
91.4
85
115
2.87
20
Chromium
47.8
2.00
ug/L
50.00
95.5
85
115
0.636
20
Copper
48.0
1.00
ug/L
50.00
96.0
85
115
0.0855
20
Lead
47.9
1.00
ug/L
50.00
95.8
85
115
0.656
20
Manganese
47.7
1.00
ug/L
50.00
95.3
85
115
0.202
20
Nickel
48.2
1.00
ug/L
50.00
96.5
85
115
0.0622
20
Vanadium
47.9
1.00
ug/L
50.00
95.8
85
115
0.637
20
Zinc
45.8
2.00
ug/L
50.00
91.5
85
115
1.40
20
LCS Dup (B311107-BSD3)
Aluminum
473
20.0
ug/L
500.0
94.6
85
115
1.14
20
Antimony
47.2
1.00
ug/L
50.00
94.4
85
115
0.161
20
Arsenic
46.8
1.00
ug/L
50.00
93.7
85
115
1.13
20
Barium
47.1
1.00
ug/L
50.00
94.3
85
115
0.933
20
Cadmium
45.5
1.00
ug/L
50.00
91.0
85
115
0.0505
20
Chromium
47.8
2.00
ug/L
50.00
95.6
85
115
0.998
20
Copper
48.0
1.00
ug/L
50.00
96.0
85
115
0.801
20
Lead
48.4
1.00
ug/L
50.00
96.8
85
115
0.396
20
Manganese
47.9
1.00
ug/L
50.00
95.9
85
115
0.0917
20
Nickel
48.4
1.00
ug/L
50.00
96.7
85
115
1.34
20
Vanadium
48.2
1.00
ug/L
50.00
96.4
85
115
0.637
20
Zinc
45.6
2.00
ug/L
50.00
91.2
85
115
0.451
20
Matrix Spike (B311107-MS1)
Source: 2311039-02
Aluminum
479
20.0
ug/L
500.0
ND
95.9
o
CO
120
Antimony
48.6
1.00
ug/L
50.00
ND
97.2
o
CO
120
Arsenic
48.0
1.00
ug/L
50.00
0.448
95.1
o
CO
120
Barium
47.2
1.00
ug/L
50.00
0.546
93.4
o
CO
120
Cadmium
45.2
1.00
ug/L
50.00
ND
90.3
o
CO
120
Chromium
47.0
2.00
ug/L
50.00
ND
94.0
o
CO
120
Copper
132
1.00
ug/L
50.00
87.9
88.7
o
CO
120
Lead
53.0
1.00
ug/L
50.00
3.40
99.2
o
CO
120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 122 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Analyte
Result
Reporting
Limit
Units
Spike
Level
Source
Result
%REC
%REC
Limits
RPD
RPD Limit
Batch B311107
Matrix Spike (B311107-MS1)
Source: 2311039-02
Vlanganese
47.1
1.00
ug/L
50.00
0.546
93.1
80-120
Mickel
50.1
1.00
ug/L
50.00
4.02
92.3
80-120
Vanadium
49.2
1.00
ug/L
50.00
ND
98.4
80-120
Zinc
2240
20.0
ug/L
50.00
2250
NR
80-120
Matrix Spike (B311107-MS2)
Source: 2311039-12
Aluminum
496
20.0
ug/L
500.0
25.0
94.3
80-120
Antimony
48.5
1.00
ug/L
50.00
ND
97.0
80-120
Arsenic
48.1
1.00
ug/L
50.00
0.612
95.0
80-120
Barium
46.9
1.00
ug/L
50.00
0.630
92.5
80-120
Cadmium
45.1
1.00
ug/L
50.00
ND
90.1
80-120
Chromium
47.3
2.00
ug/L
50.00
0.347
93.9
80-120
Copper
95.0
1.00
ug/L
50.00
51.0
88.0
80-120
Lead
51.8
1.00
ug/L
50.00
2.34
98.9
80-120
Vlanganese
48.7
1.00
ug/L
50.00
2.57
92.4
80-120
Mickel
54.0
1.00
ug/L
50.00
8.04
91.9
80-120
Vanadium
49.0
1.00
ug/L
50.00
ND
97.9
80-120
Zinc
717
10.0
ug/L
50.00
671
91.7
80-120
Matrix Spike (B311107-MS3)
Source: 2311039-22
Aluminum
504
20.0
ug/L
500.0
34.8
93.8
80-120
Antimony
49.4
1.00
ug/L
50.00
ND
98.7
80-120
Arsenic
47.9
1.00
ug/L
50.00
0.485
94.7
80-120
Barium
47.2
1.00
ug/L
50.00
0.487
93.5
80-120
Cadmium
45.6
1.00
ug/L
50.00
ND
91.2
80-120
Chromium
47.0
2.00
ug/L
50.00
0.345
93.4
80-120
Copper
113
1.00
ug/L
50.00
69.2
87.6
80-120
Lead
49.9
1.00
ug/L
50.00
1.11
97.7
80-120
Vlanganese
47.5
1.00
ug/L
50.00
1.34
92.3
80-120
Mickel
46.4
1.00
ug/L
50.00
0.466
92.0
80-120
Vanadium
48.6
1.00
ug/L
50.00
ND
97.2
80-120
Zinc
109
2.00
ug/L
50.00
60.3
97.2
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 123 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Analyte
Result
Reporting
Limit
Units
Spike
Level
Source
Result
%REC
%REC
Limits
RPD
RPD Limit
Batch B311107
Matrix Spike (B311107-MS4)
Source: 2311039-35
Aluminum
486
20.0
ug/L
500.0
19.9
93.2
80-120
Antimony
48.6
1.00
ug/L
50.00
ND
97.2
80-120
Arsenic
48.3
1.00
ug/L
50.00
0.536
95.6
80-120
Barium
47.4
1.00
ug/L
50.00
0.526
93.7
80-120
Cadmium
45.9
1.00
ug/L
50.00
ND
91.8
80-120
Chromium
46.6
2.00
ug/L
50.00
ND
93.3
80-120
Copper
47.8
1.00
ug/L
50.00
2.51
90.5
80-120
Lead
49.6
1.00
ug/L
50.00
0.536
98.1
80-120
Vlanganese
49.3
1.00
ug/L
50.00
3.18
92.2
80-120
Mickel
46.7
1.00
ug/L
50.00
1.06
91.2
80-120
Vanadium
48.6
1.00
ug/L
50.00
ND
97.2
80-120
Zinc
49.5
2.00
ug/L
50.00
4.74
89.6
80-120
Matrix Spike (B311107-MS5)
Source: 2311039-45
Aluminum
486
20.0
ug/L
500.0
17.3
93.7
80-120
Antimony
49.4
1.00
ug/L
50.00
ND
98.7
80-120
Arsenic
47.8
1.00
ug/L
50.00
0.500
94.7
80-120
Barium
47.1
1.00
ug/L
50.00
0.311
93.5
80-120
Cadmium
45.3
1.00
ug/L
50.00
ND
90.6
80-120
Chromium
47.0
2.00
ug/L
50.00
ND
94.1
80-120
Copper
66.5
1.00
ug/L
50.00
21.9
89.3
80-120
Lead
52.1
1.00
ug/L
50.00
2.42
99.3
80-120
Vlanganese
50.5
1.00
ug/L
50.00
4.36
92.2
80-120
Mickel
46.6
1.00
ug/L
50.00
0.783
91.7
80-120
Vanadium
48.9
1.00
ug/L
50.00
ND
97.8
80-120
Zinc
67.6
2.00
ug/L
50.00
20.1
95.0
80-120
Matrix Spike (B311107-MS6)
Source: 2311039-54
Aluminum
491
20.0
ug/L
500.0
18.0
94.6
80-120
Antimony
49.6
1.00
ug/L
50.00
ND
99.3
80-120
Arsenic
48.1
1.00
ug/L
50.00
0.650
94.9
80-120
Barium
47.5
1.00
ug/L
50.00
0.365
94.3
80-120
Cadmium
45.6
1.00
ug/L
50.00
ND
91.2
80-120
Chromium
47.2
2.00
ug/L
50.00
ND
94.3
80-120
Copper
71.8
1.00
ug/L
50.00
26.9
89.8
80-120
Lead
54.8
1.00
ug/L
50.00
4.87
99.9
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 124 of 125
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
Region 2 Laboratory
Final Report
Project: US VI Drinking Water - 2311021
Project Number: 2311021
Metals ICPMS - Quality Control
Reporting
Spike
Source
%REC
RPD
Analyte
Result
Limit
Units
Level
Result
%REC
Limits
RPD
Limit
Batch B311107
Matrix Spike (B31U07-MS6) Source: 2311039-54
Manganese
52.5
1.00
ug/L
50.00
5.71
93.5
80-120
Nickel
46.8
1.00
ug/L
50.00
0.718
92.2
80-120
Vanadium
49.2
1.00
ug/L
50.00
ND
98.4
80-120
Zinc
64.8
2.00
ug/L
50.00
17.8
94.0
80-120
U.S.E.P.A Region 2 Laboratory
NOTE: The results recorded in this report relate only to the samples as received on the date and at the time noted
Reported: 11/20/2023 Page 125 of 125
------- |