DERR-2024-011788

Facilities | Environmental | Geotechnical | Materials 1
Cover Page
Quarterly Groundwater Monitoring
Report 2024
Brent Redd Property
148 East Center Street, Monticello, Utah
Facility ID #5000003 Release ID GZQ
October 29, 2024 | Terracon Project No. AL067003
Prepared for:
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
Salt Lake City, Utah
6952 South High Tech Drive Ste. B
Midvale, Utah 84047
P [phone]
Terracon.com
Facilities | Environmental | Geotechnical | Materials i
Cover Letter
October 29, 2024
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West
Salt Lake City, Utah 84114
Attn: Mr. Mark Crim
E:[e-mail]
Re: Quarterly Groundwater Monitoring Report – September 2024
Brent Redd Property
148 East Center Street, Monticello, Utah
Facility Identification No. 5000003, Release ID GZQ
Terracon Project No. AL067003
Dear Mr. Crim:
Terracon Consultants, Inc. (Terracon) is pleased to submit this Quarterly Groundwater
Monitoring Report documenting the fifth quarterly groundwater sampling event conducted
under Work Assignment GZQ-57-TER at the Brent Redd property (Facility ID 5000003,
Release ID GZQ), located at 148 East Center Street, Monticello, Utah.
Terracon has performed this work pursuant to Work Plan GZQ-56-TER, dated September 13,
2023. This work was conducted under Terracon's contract (Contract Number 216383) with the
Division of Environmental Response and Remediation.
We appreciate the opportunity to have performed these services for you. Please contact our
office at [phone] if you have questions regarding this information or if we can
provide any other services.
Sincerely,
Terracon Consultants, Inc.
Stephen Maliszeski Amy Austin
Environmental Project Manager Authorized Project Reviewer
UST Sampler #1832 UST Consultant #238
Amy Austin
Facilities | Environmental | Geotechnical | Materials ii
Table Of Contents
1.0 Introduction ................................................................................ 1
1.1 Site Description ..................................................................................... 1
1.2 Scope of Services ................................................................................... 1
1.3 Standard of Care .................................................................................... 1
1.4 Additional Scope Limitations .................................................................... 1
1.5 Reliance ................................................................................................ 2
2.0 Groundwater Sampling Event......................................................... 2
2.1 Groundwater Sample Collection ............................................................... 2
2.2 General Observations ............................................................................. 2
3.0 Laboratory Analytical Methods ....................................................... 3
4.0 Data Evaluation ........................................................................... 3
4.1 Groundwater Sample Results ................................................................... 3
4.2 Quality Control ....................................................................................... 4
5.0 Findings And Conclusions .............................................................. 4
APPENDICES
Appendix A Exhibits
Exhibit 1:Topographic Site Overview
Exhibit 2:Site Diagram
Exhibit 3:Groundwater Elevation Map, September 2024
Exhibit 4: TPH-GRO Concentrations, September 2024
Exhibit 5: TPH-DRO Concentrations, September 2024
Exhibit 6:Benzene Concentrations, September 2024
Appendix B Data Tables
Table 1:Well Construction and Groundwater Elevation Data
Table 2:Groundwater Analytical Results
Appendix C Chain of Custody Documentation and Laboratory Data Sheets
Quarterly Groundwater Monitoring Report; September 2024 (Fifth Event)
Brent Redd Property | Monticello, Utah
October 29, 2024 | Terracon Project No. AL067003
Facilities | Environmental | Geotechnical | Materials 1
1.0 Introduction
1.1 Site Description
Terracon conducted a groundwater monitoring event at the Brent Redd property (Facility ID
5000003, Release ID GZQ), located at 148 East Center Street, Monticello, Utah. A
topographic map of the area is provided as Exhibit 1 (Appendix A). A site diagram with
monitoring well locations is provided as Exhibit 2 (Appendix A).
1.2 Scope of Services
The work objective of Work Assignment GZQ-57-TER was to collect groundwater samples
from eleven existing on- and off-site monitoring wells to assess the current groundwater
conditions. This is the fifth event of six quarterly groundwater monitoring events approved
under Work Assignment GZQ-57-TER.
1.3 Standard of Care
Terracon’s services were performed consistent with generally accepted practices of the
profession undertaken in similar studies in the same geographical area during the same
time period. Please note that Terracon does not warrant the work of laboratories, regulatory
agencies, or other third parties supplying information used to prepare the report. These
services were performed in accordance with the scope of services agreed with you, our
client, as reflected in our proposal, and were not performed in accordance with ASTM
E1903-19.
1.4 Additional Scope Limitations
Findings, conclusions, and recommendations resulting from these services are based upon
information derived from the on-site activities and other services performed under this
scope of services. Such information is subject to change over time. Certain indicators of the
presence of hazardous substances, petroleum products, or other constituents may have
been latent, inaccessible, unobservable, non-detectable, or not present during these
services, and we cannot represent that the site contains no hazardous substances, toxic
materials, petroleum products, or other latent conditions beyond those identified during this
investigation. Subsurface conditions may vary from those encountered at specific borings or
wells or during other surveys, tests, assessments, investigations, or exploratory services;
the data, interpretations, findings, and recommendations are based solely upon data
obtained at the time and within the scope of these services.
Quarterly Groundwater Monitoring Report; September 2024 (Fifth Event)
Brent Redd Property | Monticello, Utah
October 29, 2024 | Terracon Project No. AL067003
Facilities | Environmental | Geotechnical | Materials 2
1.5 Reliance
This report has been prepared for the exclusive use and reliance of the Utah Department of
Environmental Quality (UDEQ). Use or reliance by any other party is prohibited without the
written authorization of the UDEQ and Terracon.
Reliance on the report by the client and all authorized parties will be subject to the terms,
conditions, and limitations stated in the proposal, report, and Terracon’s Terms and
Conditions. The limitation of liability defined in the Terms and Conditions is the aggregate
limit of Terracon’s liability to the client and all relying parties.
2.0 Groundwater Sampling Event
2.1 Groundwater Sample Collection
On September 23, 2024, a Terracon representative gauged the groundwater levels in 11
monitoring wells located at the site and at a hydraulically down-gradient property
(Monticello Inn). On September 24 and 25, 2024, Terracon collected groundwater samples
from monitoring wells B-3R, MW-5R, MW-7, MW-14, MW-15, MW-16, MW-17, MW-18, MW-
19, MW-20, and MW-21. Two quality control samples were shipped with the samples,
consisting of a trip blank and a field blank.
Prior to collecting the groundwater samples, each well was purged of three well volumes to
remove stagnant water from the well casings prior to sampling. Monitoring wells MW-15 and
MW-16 were purged dry, removing approximately 10 gallons before allowing them to
recover prior to sampling. A slight sheen was observed on the purge water from monitoring
well B-3R. Sampling locations included B-3R, MW-5R, MW-7, MW-17, and MW-19. Purge
water was thin spread across the surface in the vicinity of the well that generated the water
and allowed to evaporate or infiltrate into surface soils. Care was taken to not allow purge
water to affect nearby receptors (e.g., stormwater catch basins, other monitoring wells,
utilities, etc.) or residential property.
2.2 General Observations
Depth-to-water measurements and groundwater elevations are presented in Table 1
(Appendix B). Groundwater elevations at the site were measured to range between
7,023.14 (MW-21) and 7,033.38 (MW-14) feet above mean sea level (msl).
The direction of groundwater flow is generally toward the east (Exhibit 3, Appendix A). The
groundwater gradient and associated flow direction were generally consistent with the flow
directions observed during previous 2023 and 2024 groundwater monitoring events. Free
product was not observed in the monitoring wells during this sampling event. Groundwater
Quarterly Groundwater Monitoring Report; September 2024 (Fifth Event)
Brent Redd Property | Monticello, Utah
October 29, 2024 | Terracon Project No. AL067003
Facilities | Environmental | Geotechnical | Materials 3
levels were generally higher than the June 2024 monitoring event, however within the
general seasonal fluctuations based on historical gauging from May 2000 to June 2024.
Terracon had previously installed passive light non-aqueous phase liquid (LNAPL) recovery
equipment: Durham Geo SoakEase product-selective absorbent socks and stainless-steel
canisters in monitoring wells B-3R and MW-7; however, the absorbent socks were removed
during previous sampling events. No measurable LNAPL was observed in these wells during
this event and the absorbent socks were not replaced.
3.0 Laboratory Analytical Methods
The groundwater samples were collected and placed in laboratory-prepared containers,
labeled, and placed on ice in a cooler and transported to Chemtech-Ford Laboratory in
Sandy, Utah.
The groundwater samples were submitted for analysis of methyl tertiary-butyl ether,
benzene, toluene, ethylbenzene, total xylenes, and naphthalene (MBTEXN), total petroleum
hydrocarbons gasoline-range organics (TPH-GRO) using United States Environmental
Protection Agency (EPA) Method 8260, and total petroleum hydrocarbons diesel-range
organics (TPH-DRO) using EPA Method 8015C by the methods identified in the following
table. The field blank and trip blank were analyzed for MBTEXN and TPH-GRO.
The samples were analyzed using the following methods:
Analysis Sample type No. Of
Samples Laboratory method
MBTEXN Groundwater 13 EPA Method 8260D
TPH-GRO Groundwater 13 EPA Method 8260B/C
TPH-DRO Groundwater 11 EPA Method 8015C
The executed chain-of-custody form and laboratory data sheets are provided in Appendix C.
4.0 Data Evaluation
4.1 Groundwater Sample Results
Results of the groundwater sampling event are summarized in Table 2 (Appendix B).
Sample locations are shown on Exhibit 2 (Appendix A).
Quarterly Groundwater Monitoring Report; September 2024 (Fifth Event)
Brent Redd Property | Monticello, Utah
October 29, 2024 | Terracon Project No. AL067003
Facilities | Environmental | Geotechnical | Materials 4
As presented in Table 2 (Appendix B), petroleum hydrocarbons were reported above the
laboratory method reporting limits in 10 of the wells sampled.
The TPH-GRO concentrations exceeded the Initial Screening Level (ISL) in monitoring
wells MW-5R, MW-7, MW-14 and MW-15. The TPH-GRO concentrations exceeded the
Tier 1 Screening Criteria in monitoring wells B-3R, MW-16, and MW-17.
TPH-DRO concentrations exceeded the ISL in monitoring wells B-3R, MW-16, MW-17,
and MW-18. The TPH-DRO concentrations in the groundwater samples did not
exceed the Tier 1 Screening Criteria.
Benzene concentrations exceeded the ISL in monitoring wells MW-7, MW-14, MW-19,
and MW-20. Benzene concentrations exceeded the Tier 1 Screening Criteria in
monitoring wells B-3R, MW-5R, MW-15, MW-16, MW-17, and MW-18.
Ethylbenzene concentrations exceeded the ISL in monitoring wells B-3R and MW-17.
Isoconcentration contour maps for TPH-GRO, TPH-DRO, and benzene are presented as
Exhibits 4, 5, and 6 (Appendix A), respectively.
4.2 Quality Control
Quality control for the sampling program was provided by using standardized sample
collection and handling methods, documenting pertinent field information, and keeping
chain-of-custody records, as well as using a Utah-certified laboratory. The sampling
procedures followed Terracon’s Standard Operating Procedures and industry practices.
A review of the field procedures indicates that standard operating procedures were followed
with regards to sample collection, handling, and documentation. The quality control samples
(field and trip blank) did not have concentrations above the respective laboratory reporting
limits.
Based on the laboratory analytical report, the samples were extracted and analyzed within
appropriate sample holding times. Internal laboratory QA/QC procedures and results are
presented in the laboratory report and were within acceptable limits set by the laboratory,
except where noted.
5.0 Findings And Conclusions
Petroleum hydrocarbon concentrations remain elevated at the site and at the hydraulically
down-gradient Monticello Inn property. Concentrations of benzene and TPH-GRO exceeding
the Tier 1 Screening Criteria and/or ISL are present in several site wells, including
monitoring well MW-5R, located along the north property boundary. The petroleum impacts
have migrated past the eastern site boundary above the ISLs, as demonstrated by the
benzene and TPH-GRO analytical results from monitoring well MW-7, located on the
Quarterly Groundwater Monitoring Report; September 2024 (Fifth Event)
Brent Redd Property | Monticello, Utah
October 29, 2024 | Terracon Project No. AL067003
Facilities | Environmental | Geotechnical | Materials 5
eastern-adjoining Monticello Inn property. Concentrations of ethylbenzene and/or TPH-DRO
in the groundwater samples exceeded the ISL in four of the site monitoring wells but were
not reported above ISLs in the groundwater samples collected from the downgradient,
adjoining property during this event.
Monitoring wells B-3R, MW-16, and MW-17 continue to exhibit the highest petroleum
constituent concentrations in the sampled monitoring wells. Although LNAPL was previously
observed in monitoring wells B-3R, MW-5, MW-7, and MW-16 between 2002 and 2013, no
measurable LNAPL has been observed after 2013.
Concentrations of dissolved petroleum hydrocarbons exceeding UDEQ screening levels
remain on- and off-site. A review of historical data shows periodic fluctuation of petroleum
hydrocarbon concentrations in groundwater across the site; however, the concentration
trends appear to have increasingly stable dissolved petroleum constituent concentrations.
Based on the elevated concentrations of dissolved phase benzene and TPH observed at
monitoring wells B-3R, MW-16, and MW-17, a petroleum hydrocarbon source may remain in
the subsurface.
Appendix A
Exhibits
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Oct 2024
Date:
AL067003
Project No.:
Brent Redd Property
148 East Center Street
Monticello, Utah
Groundwater Elevation Map, September 2024
3
ABA
AST
DATA SOURCES:
ESRI - Basemaps
&
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8

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7
0
2
9

f
t
7
0
3
0

f
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7
0
3
1

f
t
MW-14
7033.38
B-3R
7032.46
MW-19
7030.30
MW-17
7030.98
MW-18
7030.41
MW-16
7031.39
MW-15
7031.56
MW-5R
7030.92
MW-20
7027.74
MW-7
7026.94
MW-21
7023.14
0 40 8020
Feet
³
³@A Monitoring Well with Groundwater Elevation (ft), September 2024
Groundwater Contour (ft), September 2024
&Approximate Groundwater Flow Direction
N:
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Oct 2024
Date:
AL067003
Project No.:
Brent Redd Property
148 East Center Street
Monticello, Utah
TPH-GRO Concentrations, September 2024
4
ABA
AST
DATA SOURCES:
ESRI - Basemaps
@A
@A
@A
@A
@A@A
@A
@A
@A
@A
@A
MW-14
1,960
B-3R
26,500
MW-19
ND
MW-17
17,600
MW-18
686
MW-16
10,400
MW-15
4,100
MW-5R
2,150
MW-20
ND
MW-7
1,900
MW-21
ND
0 40 8020
Feet
³
³@A Monitoring Well with TPH-GRO Concentration (µg/l), September 2024
TPH-GRO Concentrations (µg/l), September 2024
>10,000 (Exceeds UDEQ Tier 1)
1,000 - 10,000 (Exceeds UDEQ ISL)
ND - Not detected at or above laboratory reporting limit
µg/l - micrograms per liter
N:
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Oct 2024
Date:
AL067003
Project No.:
Brent Redd Property
148 East Center Street
Monticello, Utah
TPH-DRO Concentrations, September 2024
5
ABA
AST
DATA SOURCES:
ESRI - Basemaps
@A
@A
@A
@A
@A@A
@A
@A
@A
@A
@A
MW-14
ND
B-3R
5,900
MW-19
ND
MW-17
3,300
MW-18
1,200
MW-16
1,500
MW-15
ND
MW-5R
ND
MW-20
ND
MW-7
ND
MW-21
ND
0 40 8020
Feet
³
³@A Monitoring Well with TPH-DRO Concentration (µg/l), September 2024
TPH-DRO Concentration (µg/l), September 2024
1,000 - 10,000 (Exceeds UDEQ ISL)
ND - Not detected at or above laboratory reporting limit
µg/l - micrograms per liter
N:
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Exhibit
terracon.comPH. 801-545-8500
6952 S High Tech Dr, Ste B
Midvale, UT
Reviewed By:
Drawn By:
Oct 2024
Date:
AL067003
Project No.:
Brent Redd Property
148 East Center Street
Monticello, Utah
Benzene Concentrations, September 2024
6
ABA
AST
DATA SOURCES:
ESRI - Basemaps
@A
@A
@A
@A
@A@A
@A
@A
@A
@A
@A
MW-14
34
B-3R
3,490
MW-19
12
MW-17
9,100
MW-18
686
MW-16
7,550
MW-15
2,060
MW-5R
651
MW-20
57
MW-7
26
MW-21
ND
0 40 8020
Feet
³
³@A Monitoring Well with Benzene Concentration (µg/l), September 2024
Benzene Concentration in Groundwater, September 2024
> 300 µg/l (Exceeds UDEQ Tier 1)
5 - 300 µg/l (Exceeds UDEQ ISL)
ND - Not detected at or above laboratory reporting limit
µg/l - micrograms per liter
Appendix B
Data Tables
Table 1
Brett Redd Facility
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Well Construction and Groundwater Elevation Data
Well ID Well Diameter
(inches)
Screened
Interval
(ft-bgs)
Well Depth
(feet)
Top of
Casing
Elevation
(feet)
Date
Depth to
Water
(ft-btoc)
Ground Water
Elevation
(feet)
99.42 11/08/91 15.76 83.66
10/10/95 10.41 7,036.73
02/01/96 14.49 7,032.65
09/10/96 15.71 7,031.43
12/10/96 14.54 7,032.60
03/12/97 9.70 7,037.44
06/12/97 9.28 7,037.86
10/01/97 10.36 7,036.78
12/10/97 12.51 7,034.63
03/26/98 11.39 7,035.75
07/14/98 10.82 7,036.32
01/11/99 13.30 7,033.84
04/28/99 12.35 7,034.79
07/20/99 12.44 7,034.70
10/13/99 12.38 7,034.76
05/24/00 13.15 7,033.99
08/09/00 12.76 7,034.38
11/07/00 12.42 7,034.72
02/08/01 13.49 7,033.65
05/08/01 13.00 7,034.14
08/14/01 12.33 7,034.81
08/05/02 17.43 7,029.71
11/13/02 18.41 7,028.74
12/05/02 18.94 7,028.20
01/19/03 19.42 7,027.72
02/19/03 19.58 7,027.56
03/20/03 17.00 7,030.14
05/27/03 19.34 7,027.80
03/23/04 18.93 7,028.21
10/10/06 10.79 7,036.35
05/08/07 14.42 7,032.72
11/12/09 14.28 7,032.86
06/29/10 9.82 7,037.32
02/14/13 16.81 7,030.33
09/10/13 17.82 7,029.32
11/19/13 17.85 7,029.29
07/23/14 19.15 7,027.99
05/14/15 15.13 7,032.01
05/03/16 13.42 7,033.72
11/18/16 15.68 7,031.46
06/06/18 18.88 7,028.26
04/16/19 10.32 7,036.82
10/09/19 NM --
01/27/22 NM --
7047.62 05/24/00 13.87 7,033.75
08/09/00 13.90 7,033.62
11/07/00 13.19 7,034.33
02/08/01 15.28 7,032.24
05/08/01 13.50 7,034.02
08/14/01 12.85 7,034.67
08/05/02 17.93 7,029.59
11/13/02 18.96 7,028.56
12/05/02 19.15 7,028.37
01/19/03 NM NM
02/19/03 NM LNAPL
03/20/03 17.82 7,029.70
05/27/03 NM LNAPL
03/23/04 19.53 7,027.99
10/09/06 11.90 7,035.62
05/08/07 14.99 LNAPL (0.03')
11/12/09 14.69 7,032.83
06/29/10 10.33 7,037.19
02/14/13 17.32 LNAPL (0.07')
09/10/13 18.29 LNAPL (0.10')
11/18/13 18.31 LNAPL (0.07')
07/23/14 19.84 7,027.68
05/14/15 15.81 7,031.71
05/03/16 14.20 7,033.32
11/18/16 16.08 7,031.44
06/06/18 19.31 7,028.21
04/16/19 10.93 7,036.59
10/09/19 15.64 7,031.88
06/25/20 16.32 7,031.20
01/27/22 19.52 7,028.00
04/21/22 19.48 7,028.04
07/28/22 19.70 7,027.82
10/20/22 19.50 7,028.02
09/26/23 14.45 7,033.07
12/12/23 15.62 7,031.90
03/20/24 12.38 7,035.14
06/25/24 13.54 7,033.98
09/23/24 15.06 7,032.46
B-3R 2 10-20 20.00 7047.52
B-2 7047.1438.7322-374
Well Abandoned
Page 1 of 5 Terracon Consultants, Inc.
Table 1
Brett Redd Facility
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Well Construction and Groundwater Elevation Data
Well ID Well Diameter
(inches)
Screened
Interval
(ft-bgs)
Well Depth
(feet)
Top of
Casing
Elevation
(feet)
Date
Depth to
Water
(ft-btoc)
Ground Water
Elevation
(feet)
10/11/95 10.43 7,034.67
02/01/96 14.46 7,030.64
06/21/96 15.61 7,029.49
09/10/96 15.50 7,029.60
12/10/96 14.50 7,030.60
03/12/97 10.28 7,034.82
06/12/97 9.26 7,035.84
10/01/97 10.27 7,034.83
12/10/97 12.43 7,032.67
03/26/98 11.50 7,033.60
07/14/98 9.85 7,035.25
01/11/99 13.38 7,031.72
04/28/99 12.87 7,032.23
07/20/99 12.62 7,032.48
10/13/99 12.52 7,032.58
05/24/00 13.25 7,031.85
08/09/00 12.84 7,032.26
11/07/00 12.86 7,032.24
02/08/01 14.93 7,030.17
05/08/01 13.20 7,031.90
08/14/01 11.50 7,033.60
08/05/02 17.18 7,027.92
11/13/02 18.50 7,026.60
12/05/02 18.57 7,026.53
01/19/03 19.01 7,026.09
02/19/03 19.24 7,025.86
03/20/03 16.81 7,028.29
05/27/03 18.85 7,026.25
03/23/04 18.28 7,026.82
10/09/06 11.43 LNAPL (0.11')
05/08/07 14.50 LNAPL (0.15')
11/12/09 14.06 LNAPL (0.01')
06/29/10 9.84 7,035.26
02/14/13 16.58 7,028.52
09/10/13 16.03 7,029.07
11/18/13 17.49 7,027.61
07/22/14 18.66 7,026.44
05/14/15 15.12 7,029.98
05/03/16 13.70 7,031.40
11/18/16 15.60 7,029.50
06/06/18 NM --
04/16/19 NM --
10/09/19 NM --
01/27/22 18.30 7,026.42
04/21/22 18.11 7,026.61
07/28/22 19.22 7,025.50
10/20/22 18.34 7,026.38
09/26/23 13.17 7,031.55
12/12/23 14.15 7,030.57
03/20/24 10.67 7,034.05
06/25/24 11.97 7,032.75
09/23/24 13.80 7,030.92
MW-5
MW-5R
22.97
Well Casing
Damaged
4 8-23
2 10-30 29.64 7044.72
7045.10
Well Abandoned
Page 2 of 5 Terracon Consultants, Inc.
Table 1
Brett Redd Facility
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Well Construction and Groundwater Elevation Data
Well ID Well Diameter
(inches)
Screened
Interval
(ft-bgs)
Well Depth
(feet)
Top of
Casing
Elevation
(feet)
Date
Depth to
Water
(ft-btoc)
Ground Water
Elevation
(feet)
10/11/95 10.25 7,030.79
02/01/96 14.31 7,026.73
06/21/96 14.92 7,026.12
09/10/96 15.05 7,025.99
12/10/96 14.51 7,026.53
03/12/97 9.83 7,031.21
06/12/97 8.72 7,032.32
10/01/97 9.97 7,031.07
12/10/97 12.24 7,028.80
03/26/98 11.35 7,029.69
07/14/98 9.99 7,031.05
01/11/99 13.03 7,028.01
04/28/99 12.46 7,028.58
07/20/99 11.84 7,029.20
10/13/99 11.91 7,029.13
05/24/00 12.49 7,028.55
08/09/00 12.36 7,028.68
11/07/00 12.82 7,028.22
02/08/01 14.67 7,026.37
05/08/01 12.80 7,028.24
08/14/01 12.10 7,028.94
08/05/02 16.75 7,024.29
11/13/02 16.70 7,024.34
12/05/02 18.03 7,023.01
01/19/03 NM NM
02/19/03 18.45 7,022.59
03/20/03 NM NM
05/27/03 NM NM
03/23/04 NM NM
11/12/09 14.36 LNAPL (0.05')
06/29/10 9.61 7,031.43
02/14/13 NM NM
09/10/13 16.09 LNAPL (0.01')
11/18/13 16.53 LNAPL (0.03')
07/22/14 17.82 7,023.22
05/13/15 14.68 7,026.36
05/03/16 13.42 7,027.62
11/18/16 15.52 7,025.52
6/6/2018 17.81 7,023.23
4/16/2019 9.95 7,031.09
10/09/19 14.05 7,026.99
06/25/20 14.57 7,026.47
01/27/22 17.99 7,023.05
04/21/22 17.68 7,023.36
07/28/22 18.45 7,022.59
10/20/22 18.00 7,023.04
09/26/23 12.96 7,028.08
12/12/23 13.19 7,027.85
03/20/24 8.70 7,032.34
06/25/24 9.67 7,031.37
09/23/24 14.10 7,026.94
MW-7 4 8-23 22.61 7041.04
Page 3 of 5 Terracon Consultants, Inc.
Table 1
Brett Redd Facility
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Well Construction and Groundwater Elevation Data
Well ID Well Diameter
(inches)
Screened
Interval
(ft-bgs)
Well Depth
(feet)
Top of
Casing
Elevation
(feet)
Date
Depth to
Water
(ft-btoc)
Ground Water
Elevation
(feet)
05/24/00 12.99 7,034.73
08/09/00 12.64 7,035.08
11/07/00 12.30 7,035.42
02/08/01 14.20 7,033.52
05/08/01 12.70 7,035.02
08/14/01 11.98 7,035.74
08/05/02 17.04 7,030.68
11/13/02 18.10 7,029.63
12/05/02 18.66 7,029.07
01/19/03 19.19 7,028.53
02/19/03 19.42 7,028.31
03/20/03 17.06 7,030.66
05/27/03 19.21 7,028.51
03/23/04 18.93 7,028.79
10/10/06 10.95 7,036.77
05/09/07 13.92 7,033.80
11/12/09 13.96 7,033.76
06/29/10 9.43 7,038.29
02/14/13 16.58 7,031.14
09/10/13 17.57 7,030.15
11/19/13 17.67 7,030.05
07/23/14 18.95 7,028.77
05/14/15 15.01 7,032.71
05/03/16 13.29 7,034.43
11/18/16 15.26 7,032.46
06/06/18 18.62 7,029.10
04/16/19 10.33 7,037.39
10/09/19 14.66 7,033.06
06/25/20 15.38 7,032.34
01/27/22 19.21 7,028.51
04/21/22 19.16 7,028.56
07/28/22 20.44 7,027.28
10/20/22 19.38 7,028.34
09/26/23 13.75 7,033.97
12/12/23 14.95 7,032.77
03/20/24 11.65 7,036.07
06/25/24 12.95 7,034.77
09/23/24 14.34 7,033.38
05/27/03 19.61 7,026.96
03/23/04 19.22 7,027.35
10/09/06 12.41 7,034.16
05/08/07 15.10 LNAPL (0.01')
05/05/16 14.34 7032.23
11/18/16 15.98 7,030.59
06/06/18 19.39 7,027.18
04/16/19 10.63 7,035.94
10/09/19 15.33 7,031.24
06/25/20 16.12 7,030.45
01/27/22 19.66 7,026.91
04/21/22 19.51 7,027.06
07/28/22 20.76 7,025.81
10/20/22 19.77 7,026.80
09/26/23 14.40 7,032.17
12/12/23 15.59 7,030.98
03/20/24 12.89 7,033.68
06/25/24 13.57 7,033.00
09/23/24 15.01 7,031.56
05/27/03 20.06 7,026.81
03/23/04 19.66 7,027.21
10/09/06 12.38 7,034.49
05/08/07 14.52 LNAPL (0.02')
11/12/09 15.06 LNAPL (0.01')
06/29/10 10.62 LNAPL (0.01')
02/14/13 17.59 7,029.28
09/10/13 15.16 7,031.71
11/19/13 18.56 7,028.31
07/22/14 19.76 7,027.11
05/14/15 16.10 7,030.77
05/03/16 14.55 7,032.32
11/18/16 16.42 7,030.45
06/06/18 19.64 7,027.23
04/16/19 11.05 7,035.82
10/09/19 15.73 7,031.14
06/25/20 16.43 7,030.44
01/27/22 20.01 7,026.86
04/21/22 19.85 7,027.02
07/28/22 21.07 7,025.80
10/20/22 20.12 7,026.75
09/26/23 14.80 7,032.07
12/12/23 15.88 7,030.99
03/20/24 12.71 7,034.16
06/25/24 13.75 7,033.12
09/23/24 15.48 7,031.39
7046.57
MW-14 2 13-23 7047.7222.75
MW-16 4 12.5-22.5 22.82 7046.87
MW-15 4 12-22 22.7
Page 4 of 5 Terracon Consultants, Inc.
Table 1
Brett Redd Facility
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Well Construction and Groundwater Elevation Data
Well ID Well Diameter
(inches)
Screened
Interval
(ft-bgs)
Well Depth
(feet)
Top of
Casing
Elevation
(feet)
Date
Depth to
Water
(ft-btoc)
Ground Water
Elevation
(feet)
05/27/03 20.28 7,026.29
03/23/04 19.77 7,026.80
10/09/06 12.31 7,034.26
05/08/07 15.42 7,031.15
11/12/09 15.63 7,030.94
06/29/10 11.12 7,035.45
02/14/13 17.79 7,028.78
09/10/13 18.60 7,027.97
11/19/13 18.72 7,027.85
07/22/14 19.93 7,026.64
05/13/15 15.30 7,031.27
05/04/16 14.71 7,031.86
11/18/16 16.87 7,029.70
06/06/18 19.84 7,026.73
04/16/19 11.34 7,035.23
10/09/19 16.08 7,030.49
06/25/20 18.73 7,027.84
01/27/22 19.90 7,026.67
04/21/22 19.75 7,026.82
07/28/22 20.92 7,025.65
10/20/22 20.04 7,026.53
09/26/23 14.84 7,031.73
12/12/23 15.82 7,030.75
03/20/24 12.13 7,034.44
06/25/24 13.52 7,033.05
09/23/24 15.60 7,030.97
09/23/24 15.59 7,030.98
05/27/03 18.49 7,025.89
03/23/04 17.96 7,026.42
10/09/06 10.56 7,033.82
05/08/07 14.09 7,030.29
11/12/09 14.04 7,030.34
06/29/10 9.36 7,035.02
02/14/13 15.97 7,028.41
09/10/13 16.75 7,027.63
11/19/13 16.89 LNAPL (0.01')
07/22/14 18.06 7,026.32
05/14/15 14.49 7,029.89
05/04/16 12.95 7,031.43
11/18/16 15.17 7,029.21
06/06/18 18.01 7,026.37
04/16/19 9.19 7,035.19
10/09/19 14.24 7,030.14
06/25/20 14.89 7,029.49
01/27/22 18.29 7,026.09
04/21/22 18.09 7,026.29
07/28/22 19.21 7,025.17
10/20/22 18.35 7,026.03
09/26/23 13.19 7,031.19
12/12/23 14.14 7,030.24
03/20/24 9.41 7,034.97
06/25/24 11.74 7,032.64
09/23/24 13.97 7,030.41
09/23/24 13.97 7,030.41
01/27/22 19.09 7,026.18
04/21/22 18.89 7,026.38
07/28/22 20.08 7,025.19
10/20/22 19.25 7,026.02
09/26/23 14.12 7,031.15
12/12/23 15.05 7,030.22
03/20/24 10.97 7,034.30
06/25/24 12.71 7,032.56
09/23/24 14.97 7,030.30
01/27/22 17.27 7,023.64
04/21/22 16.94 7,023.97
07/28/22 17.65 7,023.26
10/20/22 17.28 7,023.63
09/26/23 12.22 7,028.69
12/12/23 12.69 7,028.22
03/20/24 8.61 7,032.30
06/25/24 9.60 7,031.31
09/23/24 13.17 7,027.74
01/27/22 18.72 7,018.95
04/21/22 18.20 7,019.47
07/28/22 18.50 7,019.17
10/20/22 18.49 7,019.18
09/26/23 12.87 7,024.80
12/12/23 12.46 7,025.21
03/20/24 7.15 7,030.52
06/25/24 7.15 7,030.52
09/23/24 14.53 7,023.14
NOTES:
ft-bgs = Feet below ground surface.
ft-btoc = Feet below top of casing.
NM = Not measured.
LNAPL = Light non-aqueous phase liquid
MW-18 2 5-25 24.78 7044.38
MW-21 2 8-28
MW-19 2 10-30
10-30MW-20 2
29.70
MW-17 2 6.5-26.5 25.975 7046.57
7045.27
7040.9130.00
27.75 7037.67
Page 5 of 5 Terracon Consultants, Inc.
Table 2
Brent Redd Property
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Groundwater Analytical Results
Sample
Location Sample Date
Depth to
Water
(ft-btoc)
TPH-GRO TPH-DRO MTBE Benzene Toluene
Ethyl-
benzene
Total
Xylene
Naph-
thalene
1,000 1,000 200 5 1,000 700 10,000 700
10,000 10,000 200 300 3,000 4,000 10,000 700
11/08/91 15.76 <200 NA NA 40.8 39.7 23 61.2 <5
10/10/95 10.41 <500 NA NA 18.7 2.4 <2 9.3 <2
02/01/96 14.49 <500 NA NA 12.8 <2 <2 <6 <2
09/10/96 15.71 <500 NA NA <2 13.5 5.2 39.4 4
12/10/96 14.54 <500 NA NA 23.6 <2 <2 <6 <2
03/12/97 9.70 1,500 NA 456 302 <10 <10 <30 <10
06/12/97 9.28 <500 NA 218 235 5.6 7.8 9.7 <2
10/01/97 10.36 <500 NA 115 137 3.5 6.4 <6 <2
12/10/97 12.51 <500 NA 95.2 53.9 <2 2.4 <6 <2
03/26/98 11.39 <500 NA 72.2 32.1 <2 <2 <6 <2
07/14/98 10.82 <500 NA 89.5 146 <2 <2 <6 <2
01/11/99 13.30 <500 NA 334 80.9 <2 <2 <6 <2
04/28/99 12.35 <500 NA 242 54.5 <2 <2 <6 <2
07/20/99 12.44 <500 NA 166 122 <2 <2 <6 <2
10/13/99 12.38 <500 NA 109 82.5 <2 <2 <6 <2
05/24/00 13.15 3,800 NA 199 1,100 27.3 13.5 69.9 <10
08/09/00 12.76 1,800 NA 209 684 19.3 19.0 22.4 <2
11/07/00 12.42 6,300 NA 123 1,280 62.6 29.2 57.6 <5
02/08/01 13.49 <500 NA 60.3 74.1 4.6 2.9 <6 <2
05/08/01 13.00 3,000 NA 236 885 46.5 51.8 58.9 6.0
08/14/01 12.33 <500 NA 125 32.3 <2 2.1 <6 3.2
08/08/02 17.43 <500 <500 147 <2 5.0 <10 <30 <10
11/14/02 18.41 <500 <500 86.7 <2 <2 <2 <6 <2
02/19/03 19.58 <500 <500 83.8 12.6 <2 <2 <6 <2
05/28/03 19.34 <500 <500 <2 4.6 <2 <2 <6 <2
03/24/04 18.93 <500 <500 94 22 3 <2 <6 <2
10/10/06 10.79 54 <2,000 194 10 <1 <1 <3 <1
05/08/07 14.42 <50 <2,000 376 2 <1 <1 <3 <1
11/12/09 14.28 <20 <500 710 16 <2 <2 <2 <2
06/29/10 9.82 1,300 636 523 1,260 <2 5.99 4.81 3.37
02/14/13 16.81 <50 <1,000 109 <1 <1 <1 <3 <2
09/10/13 17.82 <50 <1,000 22 <1 <1 <1 <3 <2
11/16/13 17.85 <50 <1,000 5 <1 <1 <1 <3 <2
07/22/14 19.15 <50 <1,000 1 <1 <1 <1 <3 <2
05/14/15 15.13 <50 <1,000 2 1 <1 1 6 2
05/03/16 13.42 <222 <1,000 9 <2 <5 <5 <5 <5
11/18/16 15.68 <50 <1,000 <2 <2 <5 <5 <5 <5
06/06/18 18.88 <125 <1,000 7 <5 <12 <12 <12 <12
04/16/19 10.32 <125 <1,000 59 15 <12 <12 <12 <12
10/09/19 NM
06/25/20 NM
05/24/00 13.87 114,000 NA <200 17,300 9,500 727 8,160
08/09/00 13.90 149,100 NA <100 18,200 7,830 989 8,660 240
11/07/00 13.19 115,500 NA <100 18,200 5,790 826 6,910 181
02/08/01 15.28 118,600 NA <500 19,500 10,200 1,010 8,440 <500
05/08/01 13.50 92,700 NA <100 15,100 11,400 672 6,890 213
08/14/01 12.85 120,800 NA <200 20,700 18,200 647 9,110 350
08/08/02 17.93 139,000 7,700 <1,000 25,100 18,500 968 9,510 <1,000
11/13/02 18.96
02/19/03 NM
05/27/03 NM
03/23/04 19.53
10/09/06 11.90 74,600 <2,000 <5 19,200 8,970 1,130 9,720 338
05/08/07 14.99
11/12/09 14.69 50,000 12,000 <40 18,000 2,500 1,400 10,000 380
06/29/10 10.33 47,900 29,200 <20 23,600 1,390 1,360 11,000 418
02/14/13 17.32
09/10/13 18.29
11/18/13 18.31
07/22/14 19.84
05/14/15 15.81 43,500 3,600 <1 17,100 277 1,050 9,580 443
05/03/16 14.20 30,100 4,700 <5 11,800 176 810 6,380 390
11/18/16 16.08 36,000 8,900 <200 12,700 <500 1,210 8,600 <500
06/06/18 19.31 36,200 10,300 <5 10,100 194 1,050 6,840 406
04/17/19 10.93 32,300 16,400 <5 5,620 125 1,150 6,060 375
10/09/19 15.64 39,000 15,400 <5 6,850 154 1,520 9,440 406
06/25/20 16.32 29,700 9,000 <100 8,040 <250 1,070 6,760 318
01/27/22 19.52
04/21/22 19.48
07/28/22 19.70
10/20/22 19.50
09/27/23 14.45 26,300 7,000 <5 5,930 80 1,200 5,080 313
12/12/23 15.62
25,300 8,900 <5 5,440 103 1,070 4,980 319
03/20/24 12.38
27,700 8,300 <50 4,090 <125 1,170 4,950 398
06/25/24 13.54
29,400 8,200 <8 3,440 73 1,150 5,240 365
09/24/24 15.06
26,500 5,900 <8 3,490 81 1,180 5,190 310
B-3R
Well abandoned
Not sampled as per Work Assignment GZQ-49-TER
Not sampled as per Work Assignment GZQ-49-TER
B-2
Insufficient water column
Insufficient water column
LNAPL
Insufficient water column
LNAPL
LNAPL
LNAPL
Not Sampled - purged dry with no recovery after 24 hours
Initial Screening Levels (ug/L)
TIER 1 Screening Criteria (ug/L)
LNAPL
LNAPL
LNAPL
Insufficient water column
LNAPL
Page 1 of 5 Terracon Consultants, Inc.
Table 2
Brent Redd Property
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Groundwater Analytical Results
Sample
Location Sample Date
Depth to
Water
(ft-btoc)
TPH-GRO TPH-DRO MTBE Benzene Toluene
Ethyl-
benzene
Total
Xylene
Naph-
thalene
1,000 1,000 200 5 1,000 700 10,000 700
10,000 10,000 200 300 3,000 4,000 10,000 700
Initial Screening Levels (ug/L)
TIER 1 Screening Criteria (ug/L)
10/11/95 10.43 94,800 NA NA 17,200 12,300 2,110 8,880 <400
02/01/96 14.46 55,700 NA NA 14,300 5,520 1,080 5,670 620
06/21/96 15.61 49,800 NA NA 17,000 5,100 1,180 5,120 249
09/10/96 15.50 35,300 NA NA 14,800 4,160 1,050 4,610 214
12/10/96 14.50 49,500 NA NA 17,400 5,460 1,160 5,930 315
03/12/97 10.28 49,200 NA <100 21,500 7,340 1,290 6,700 316
06/12/97 9.26 43,400 NA <175 18,000 3,170 1,060 4,830 422
10/01/97 10.27 50,200 NA <25 17,360 6,250 1,240 6,680 415
12/10/97 12.43 54,300 NA <143 25,300 8,400 1,510 8,400 405
03/26/98 11.50 48,800 NA <100 22,200 6,870 1,380 7,150 323
07/14/98 9.85 48,400 NA <200 24,100 9,370 1,340 7,280 275
01/11/99 13.38 38,700 NA <100 22,800 7,450 1,510 7,180 441
04/28/99 12.87 136,000 NA <100 14,100 5,310 1,120 5,770 384
07/20/99 12.62 41,100 NA <100 22,900 6,650 1,460 6,910 361
10/13/99 12.52 32,400 NA <200 20,300 4,840 1,250 6,150 429
05/24/00 13.25 92,800 NA <200 19,100 4,330 987 4,840 271
08/09/00 12.84 17,100 NA <20 2,710 720 112 937 44.3
11/07/00 12.86 39,800 NA <100 17,400 3,900 1,050 4,710 183
02/08/01 14.93 90,400 NA <500 19,000 4,060 1,070 4,980 1,040
05/08/01 13.20 79,300 NA <100 17,300 4,560 1,110 5,160 246
08/16/01 11.50 82,300 NA <100 19,000 5,910 1,280 6,060 266
08/08/02 17.18 104,000 2,900 <400 20,100 5,960 1,600 8,630 <400
11/13/02 18.50
02/19/03 19.24
05/27/03 18.85
03/23/04 18.28
10/09/06 11.43
05/08/07 14.50
11/12/09 14.04
06/29/10 9.84 25,400 39,600 <20 442 477 1,330 8,930 581
02/14/13 16.58 17,700 178,000 <20 2100 103 898 6,050 1,330
09/10/13 16.03 11,200 2,000 <20 749 105 631 4,440 263
11/18/13 17.49 13,600 2,400 <5 1,110 118 743 5,620 296
07/22/14 18.66 12,800 4,300 <5 1,040 109 665 3,340 326
05/14/15 15.12 7,560 1,800 <1 614 32 317 1,950 194
05/03/16 13.70 10,600 3,100 <5 614 24 470 2,620 247
11/18/16 15.60 17,200 4,300 <100 2,770 <250 935 4,820 <250
06/06/18 NM
04/17/19 NM
10/09/19 NM
06/25/20 NM
01/27/22 18.30 3,980 1,100 <5 754 <12 332 772 62
04/21/22 18.11 4,490 1,400 <5 679 <12 388 856 74
07/28/22 19.22 1,920 <1,000 <5 482 <12 157 281 31
10/20/22 18.34 2,190 <1,000 <5 466 <12 184 329 21
09/27/23 13.17 1,920 <1,000 <5 601 <12 117 162 <12
12/12/23 14.15
1,130 <1,000 <5 495 <12 99 91 12
03/20/24 10.67
969 <1,000 <5 340 <12 79 96 12
06/26/24 11.97
1,710 <1,000 <8 485 <12 153 191 14
09/25/24 13.80
2,150 <1,000 <8 651 <12 176 229 24
LNAPL
LNAPL
Not Sampled - well casing damaged and debris in well
MW-5R
MW-5
Not Sampled - well casing damaged and debris in well
Not Sampled - well casing damaged and debris in well
LNAPL
Well abandoned
LNAPL
LNAPL
LNAPL
LNAPL
Not Sampled - well casing damaged and debris in well
Page 2 of 5 Terracon Consultants, Inc.
Table 2
Brent Redd Property
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Groundwater Analytical Results
Sample
Location Sample Date
Depth to
Water
(ft-btoc)
TPH-GRO TPH-DRO MTBE Benzene Toluene
Ethyl-
benzene
Total
Xylene
Naph-
thalene
1,000 1,000 200 5 1,000 700 10,000 700
10,000 10,000 200 300 3,000 4,000 10,000 700
Initial Screening Levels (ug/L)
TIER 1 Screening Criteria (ug/L)
10/11/95 10.25 <500 NA NA <2 <2 <2 <6 <2
02/01/96 14.31 <500 NA NA <2 <2 <2 <6 <2
06/21/96 14.92 <500 NA NA <2 <2 <2 <6 <2
09/10/96 15.05 <500 NA NA <2 <2 <2 <6 <2
12/10/96 14.51 <500 NA NA <2 <2 <2 <6 <2
03/12/97 9.83 <500 NA 403 12.9 <2 <2 <6 <2
06/12/97 8.72 <500 NA 750 3.4 <2 <2 <6 <2
10/01/97 9.97 <500 NA 306 <2 <2 <2 <6 <2
12/10/97 12.24 <500 NA 276 <2 <2 <2 <6 <2
03/26/98 11.35 <500 NA 261 <2 <2 <2 <6 <2
07/14/98 9.99 <500 NA 167 <2 <2 <2 <6 <2
01/11/99 13.03 <500 NA 102 <2 <2 <2 <6 <2
04/28/99 12.46 <500 NA 76.5 <2 <2 <2 <6 <2
07/20/99 11.84 <500 NA 104 <2 <2 <2 <6 <2
10/13/99 11.91 <500 NA 149 <2 <2 <2 <6 <2
05/24/00 12.49 <500 NA 85.3 3.3 <2 <2 <6 <2
08/09/00 12.36 <500 NA 128 <2 <2 <2 <6 <2
11/07/00 12.82 <500 NA 134 <2 <2 <2 <6 <2
02/08/01 14.67 <500 NA 110 <2 <2 <2 <6 <2
05/08/01 12.80 <500 NA 124 <2 <2 <2 <6 <2
08/14/01 12.10 <500 NA 131 <2 <2 <2 <6 <2
08/09/02 16.75 <500 <500 13.6 <2 <2 <2 <6 <2
11/14/02 16.70 <500 <500 8.6 <2 <2 <2 <6 <2
02/19/03 18.45 <500 <500 5.7 <2 <2 <2 <6 <2
11/12/09 14.36
06/29/10 9.61 4,770 1,930 30.2 619 28.9 137 788 97.4
02/14/13 NM NA NA NA NA NA NA NA NA
09/10/13 16.09 4,660 <1,000 <5 <5 <5 43 215 50
11/18/13 16.53 1,000 <1,000 <5 <5 <5 17 68 13
07/22/14 17.82 1,500 <1,000 <1 2 <1 34 126 16
05/13/15 14.68 1,870 <1,000 <1 24 <1 15 66 15
05/03/16 13.42 16,800 24,300 <5 60 <5 72 333 103
11/18/16 15.52 7,310 5,600 <3 68 <8 31 98 16
06/06/18 17.81 2,940 1,600 <5 28 <12 14 50 <12
04/17/19 9.95 6,560 2,200 <5 193 <12 31 87 20
10/09/19 14.05 13,800 13,900 <5 62 <12 32 86 21
06/25/20 14.57 2,180 1,500 <5 53 <12 14 28 <12
01/27/22 17.99 3,420 1,300 <5 33 <12 <12 14 <12
04/21/22 17.68 1,740 <1,000 <5 50 <12 <12 13 <12
07/28/22 18.45 3,220 1,600 <5 40 <12 14 24 <12
10/20/22 18.00 2,010 1,000 <5 23 <12 <12 <12 <12
09/27/23 12.96 4,780 1,300 <5 133 <12 23 49 <12
12/12/23 13.19
2,230 <1,000 <5 39 <12 <12 17 <12
03/20/24 8.70
2,450 1,200 <5 41 <12 30 65 19
06/26/24 9.67
2,180 <1,000 <8 38 <12 26 49 <12
09/25/24 14.10
1,900 <1,000 <8 26 <12 14 <38 <12
05/24/00 12.99 600 NA <5 135 <5 <5 <15 <5
08/09/00 12.64 1,700 NA <5 21.9 <5 <5 <15 <5
11/07/00 12.30 1,900 NA <5 7.2 <5 <5 <15 <5
02/08/01 14.20 2,700 NA <2 95.9 <2 <2 <6 <2
05/08/01 12.70 3,100 NA <2 74.0 <2 <2 15.9 4.7
08/14/01 11.98 3,200 NA <2 45.2 <2 <2 <6 <2
08/08/02 17.04 1,000 640 <5 12.0 <5 <5 <15 <5
11/13/02 18.10 600 <500 <2 112 <2 <2 <6 <2
02/19/03 19.42 6,400 4,300 <2 104 9.5 <2 10.3 3.3
05/28/03 19.21 980 <500 <2 60 3.3 <2 <6 <2
03/24/04 18.93 16,900 E 2,170 <10 106 14 19 27 44
10/10/06 10.95 1,210 <2,000 <1 9 <1 <1 <3 16
05/09/07 13.92 <50 <2,000 <1 14 <1 <1 <3 <1
11/12/09 13.96 14,000 3,900 <2 76 <2 2.6 3.5 <2
06/29/10 9.43 5,450 8,150 <2 75.2 <2 6.81 12.5 7.19
02/14/13 16.58 6,330 <1000 <1 3 <1 <1 <3 <2
09/10/13 17.57 2,260 <1,000 <1 2 <1 <1 <3 <2
11/19/13 17.67 2,830 <1,000 <1 4 <1 <1 <3 <2
07/22/14 18.95 1,700 <1,000 <1 5 <1 <1 <3 7
05/14/15 15.01 2,170 1,100 <1 24 <1 2 10 4
05/04/16 13.29 1,450 <1,000 <5 21 <5 <5 10 <5
11/18/16 15.26 2,020 <1000 <2 10 <5 <5 <5 <5
06/06/18 18.62 11,300 1,800 <5 <5 <12 <12 <12 <12
04/17/19 10.33 6,580 1,500 <5 71 <12 18 54 15
10/09/19 14.66 3,820 2,300 <5 22 <12 <12 <12 <12
06/25/20 15.38 2,810 2,400 <5 34 <12 <12 <12 <12
01/27/22 19.21 3,080 <1,000 <5 <5 <12 <12 <12 <12
04/21/22 19.16 1,900 <1,000 <5 <5 <12 <12 <12 <12
07/28/22 20.44 798 <1,000 <5 6 <12 <12 <12 <12
10/20/22 19.38 2,170 <1,000 <5 26 <12 <12 <12 <12
09/27/23 13.75 2,000 1,100 <5 29 <12 <12 <12 <12
12/12/23 14.95
1,420 1,400 <5 33 <12 <12 <12 <12
03/20/24 11.65
437 <1,000 <5 <5 <12 <12 <12 <12
06/25/24 12.95
848 <1,000 <8 16 <12 <12 <38 <12
09/24/24 14.34
1,960 <1,000 <8 34 <12 <12 <38 <12
LNAPL
MW-7
MW-14
Page 3 of 5 Terracon Consultants, Inc.
Table 2
Brent Redd Property
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Groundwater Analytical Results
Sample
Location Sample Date
Depth to
Water
(ft-btoc)
TPH-GRO TPH-DRO MTBE Benzene Toluene
Ethyl-
benzene
Total
Xylene
Naph-
thalene
1,000 1,000 200 5 1,000 700 10,000 700
10,000 10,000 200 300 3,000 4,000 10,000 700
Initial Screening Levels (ug/L)
TIER 1 Screening Criteria (ug/L)
05/30/03 19.61 63,000 5,400 <100 11,000 E 5,500 E 1,700 9,100 340
03/25/04 19.22 46,000 7,910 <100 10,700 E 1,670 1,110 5,440 201
10/09/06 12.41 16,700 <2,000 <1 7,700 966 1,630 5,000 303
05/04/16 14.34 6,960 1,300 <5 878 58 269 590 58
11/18/16 15.98 7,090 1,600 <20 2,150 103 474 1,170 66
06/06/18 19.39 2,530 1,400 <5 446 23 126 361 16
04/17/19 10.63 396 <1,000 <5 94 <12 23 17 <12
10/09/19 15.33 1,730 <1,000 <5 474 14 103 121 16
06/25/20 16.12 1,300 <1,000 <5 323 13 66 162 <12
01/27/22 19.66 5,510 1,100 <5 1,740 19 374 663 37
04/21/22 19.51 5,070 <1,000 <5 2,490 21 368 422 32
07/28/22 20.76 8,740 1,400 <5 4,340 27 354 446 41
10/20/22 19.77 8,520 1,200 <5 4,700 38 364 404 37
09/27/23 14.40 4,820 1,100 <5 3,400 <12 99 123 25
12/12/23 15.59
2,870 <1,000 <5 2,110 21 116 92 23
03/20/24 12.89
4,150 <1,000 <5 2,970 22 121 139 27
06/25/24 13.57
3,100 <1,000 <8 1,890 19 116 167 23
09/24/24 15.01
4,100 <1,000 <8 2,060 32 202 334 24
05/30/03 20.06 82,000 E 5,700 <100 21,000 E 7,400 E 730 8,200 280
10/09/06 12.38 65,100 <2,000 <5 11,200 1,570 1,520 8,780 485
05/08/07 14.52
11/12/09 15.06 41,000 10,000 <40 4,700 1,100 1,100 5,000 360
06/29/10 10.62
02/14/13 17.59 32,000 3,800 <50 8,290 271 668 3,550 227
09/10/13 15.16 20,200 2,400 <25 4,880 170 580 3,120 208
11/19/13 18.56 23,300 2,600 <10 8,140 211 814 4,000 227
07/22/14 19.76 14,100 1,800 <10 4,100 99 576 2,660 178
05/14/15 16.10 12,300 2,300 <1 2,680 51 364 2,260 137
05/03/16 14.55 19,700 4,900 <5 1,760 26 280 1,370 156
11/18/16 16.42 7,500 2,300 <100 3,580 <250 <250 900 <250
06/06/18 19.64 8,830 4,400 <5 1,700 <12 125 504 54
04/17/19 11.05 901 <1,000 <5 41 <12 <12 34 <12
10/09/19 15.73 3,110 1,700 <5 578 <12 54 143 20
06/25/20 16.43 <2,500 3,800 <100 1,910 <250 <250 350 <250
01/27/22 20.01 13,100 2,200 <5 6,690 15 178 580 57
04/21/22 19.85 14,600 2,800 <5 8,320 20 202 644 63
07/28/22 21.07 17,000 4,000 <5 10,300 17 166 577 72
10/20/22 20.12 19,900 4,100 <5 10,500 28 225 759 92
09/27/23 14.80 15,200 2,700 <5 9,330 17 167 309 34
12/12/23 15.88
11,600 2,900 <5 8,990 24 199 421 59
03/20/24 12.71
18,400 2,400 <5 14,300 28 291 617 81
06/25/24 13.75
14,800 2,300 <8 10,700 26 212 527 57
09/24/24 15.48
10,400 1,500 <8 7,550 18 203 311 37
05/28/03 20.28 19,000 E 1,900 <20 4,300 E 2,200 E 210 1,500 41
03/24/04 19.77 29,700 E 7,310 <10 4,810 E 2,360 E 238 3,960 E 242
10/09/06 12.31 17,900 <2,000 <1 4,520 196 430 2,000 139
05/08/07 15.42 8,670 <2,000 3 4,670 116 307 1,330 133
11/12/09 15.63 18,000 1,900 6.3 9,100 140 690 2,000 210
06/29/10 11.12 15,700 5,820 3.75 6,120 126 1,430 4,700 272
02/14/13 17.79 19,100 <1000 <20 8,880 32 423 872 121
09/10/13 18.60 12,300 <1,000 <25 6,710 28 318 571 97
11/19/13 18.72 32,800 1,900 <5 16,600 47 737 1,560 186
07/22/14 19.93 18,000 1,200 <10 9,960 27 480 944 95
05/13/15 15.30 19,700 <1,000 2 10,800 24 511 938 158
05/04/16 14.71 20,300 2,600 <5 10,000 20 415 1,200 206
11/18/16 16.87 21,000 3,100 <50 12,700 <50 730 1,220 182
06/06/18 19.84 14,400 3,900 <5 5,620 24 505 676 123
04/17/19 11.34 20,600 8,300 <40 1,930 <100 1,600 4,400 423
10/09/19 16.08 21,200 5,400 <5 10,000 18 915 1,680 266
06/25/20 18.73 21,900 5,100 <50 11,900 <125 924 1,660 194
01/27/22 19.90 20,000 2,100 <5 13,800 25 544 804 135
04/21/22 19.75 19,700 2,500 <5 13,000 28 592 872 144
07/28/22 20.92 30,000 3,000 <5 20,600 33 640 848 165
10/20/22 20.04 21,300 3,100 <5 14,500 33 542 744 134
09/27/23 14.84 24,200 5,800 <5 8,850 27 1,040 2,390 170
12/12/23 15.82
25,300 5,400 <5 15,100 34 1,080 1,590 284
03/20/24 12.13
18,800 3,800 <5 10,500 20 764 1,160 223
06/25/24 13.52
23,400 5,200 <8 11,800 30 1,320 1,890 288
09/24/24 15.59
17,600 3,300 <8 9,100 28 1,010 1,060 198
MW-15
MW-16
MW-17
LNAPL
LNAPL
Page 4 of 5 Terracon Consultants, Inc.
Table 2
Brent Redd Property
148 East Center Street, Monticello, UT
(Facility ID 5000003, Release Site GZQ)
Groundwater Analytical Results
Sample
Location Sample Date
Depth to
Water
(ft-btoc)
TPH-GRO TPH-DRO MTBE Benzene Toluene
Ethyl-
benzene
Total
Xylene
Naph-
thalene
1,000 1,000 200 5 1,000 700 10,000 700
10,000 10,000 200 300 3,000 4,000 10,000 700
Initial Screening Levels (ug/L)
TIER 1 Screening Criteria (ug/L)
05/28/03 18.49 23,000 E 2,100 <20 8,400 E 1,100 E 27 1,000 47
03/24/04 17.96 16,600 E 6,090 <10 5,410 E 545 E 94 671 120
10/09/06 10.56 5,780 <2,000 <1 243 52.7 127 893 182
05/08/07 14.09 5,270 <2,000 <1 3,270 351 323 379 107
11/12/09 14.04 2,500 720 <2 970 17.0 94 230 55
06/29/10 9.36 477 670 <2 410 <2 7.08 4.89 3.16
02/14/13 15.97 3,640 1,200 <10 834 102 393 744 164
09/10/13 16.75 4,180 1,400 <5 525 116 272 443 34
11/19/13 16.89 3,080 <1,000 <5 378 56 247 510 25
07/22/14 18.06 1,760 <1,000 <10 240 50 183 680 36
05/14/15 14.49 2,170 1,000 <1 175 33 88 276 17
05/04/16 12.95 404 <1,000 <5 12 <5 13 18 6
11/18/16 15.17 2,930 <1,000 <10 258 <25 206 168 <25
06/06/18 18.01 3,310 1,200 <5 306 35 230 381 33
04/17/19 9.19 <125 <1,000 <5 5 <12 <12 <12 <12
10/09/19 14.24 1,270 <1,000 <5 812 <12 <12 <12 16
06/25/20 14.89 <1,125 <1,000 <50 1,100 <125 <125 <125 <125
01/27/22 18.29 965 <1,100 <5 460 <12 74 42 <12
04/21/22 18.09 959 <1,000 <5 412 13 113 162 24
07/28/22 19.21 588 <1,000 <5 349 <12 44 17 <12
10/20/22 18.35 <125 <1,000 <5 115 <12 <12 <12 <12
09/27/23 13.19 <125 2,100 <5 46 <12 <12 <12 <12
12/12/23 14.14
982 2,300 <5 982 <12 <12 <12 <12
03/20/24 9.41
<125 2,000 <5 <5 <12 <12 <12 15
06/26/24 11.74
<125 1,700 <8 11 <12 <12 <38 <12
09/24/24 13.97
686 1,200 <8 686 <12 <12 <38 <12
01/27/22 19.09 687 <1,000 <5 25 <12 21 43 14
04/21/22 18.89 <125 <1,000 <5 10 <12 <12 15 <12
07/28/22 20.08 <125 <1,000 <5 8 <12 <12 <12 <12
10/20/22 19.25 <125 <1,000 <5 8 <12 <12 <12 <12
09/27/23 14.12 <125 <1,000 <5 5 <12 <12 <12 <12
12/12/23 15.05
<10 <1,000 <4 0.5 <1 <1 <1 <1
03/20/24 10.97 <125 <1,000 <5 <5 <12 <12 <12 <12
06/26/24 12.71
<125 <1,000 <8 9 <12 <12 <38 <12
09/25/24 14.97
<125 <1,000 <8 12 <12 12 <38 <12
01/27/22 17.27 <125 <1,000 <5 9 <12 <12 <12 <12
04/21/22 16.94 <125 <1,000 <5 9 <12 <12 <12 <12
07/28/22 17.65 <125 <1,000 <5 7 <12 <12 <12 <12
10/20/22 17.28 <125 <1,000 <5 <5 <12 <12 <12 <12
09/27/23 12.22 <125 <1,000 <5 18 <12 <12 <12 <12
12/12/23 12.69
<12 <1,000 <5 11 <12 <12 <12 <12
03/20/24 8.61 <125 <1,000 <5 <5 <12 <12 <12 <12
06/26/24 9.60 <125 <1,000 <8 <5 <12 <12 <38 <12
09/25/24 13.17
<125 <1,000 <8 57 <12 <12 <38 <12
01/27/22 18.72 <125 <1,000 <5 <5 <12 <12 <12 <12
04/21/22 18.20 <125 <1,000 <5 <5 <12 <12 <12 <12
07/28/22 18.50 <125 <1,000 <5 <5 <12 <12 <12 <12
10/20/22 18.49 <125 <1,000 <5 <5 <12 <12 <12 <12
09/27/23 12.87 <125 <1,000 <5 <5 <12 <12 <12 <12
12/12/23 12.46 <125 <1,000 <5 <5 <12 <12 <12 <12
03/20/24 7.15 <125 <1,000 <5 <5 <12 <12 <12 <12
06/26/24 7.15 <125 <1,000 <8 <5 <12 <12 <38 <12
09/25/24 14.53 <125 <1,000 <8 <5 <12 <12 <38 <12
NOTES:
ft-btoc = feet below top of casing.
LNAPL = Light Nonaqueous Phase Liquid
MTBE = methyl tertiary butyl ether
NA = not analyzed
NM = not measured
TPH-DRO = total petroleum hydrocarbons diesel-range organics
TPH-GRO = total petroleum hydrocarbons gasoline-range organics
µg/L = micrograms per liter
Bold type indicates concentration exceeds laboratory reporting limit.
<= Not detected at or above the indicated laboratory reporting limit.
Concentration exceeds the Initial Screening Level (ISL)
Concentration exceeds the Tier 1 Screening Criteria
MW-18
MW-19
MW-20
MW-21
Page 5 of 5 Terracon Consultants, Inc.
Appendix C
Chain of Custody Documentation and Laboratory Data
The analyses presented on this report were performed in accordance with the
National Environmental Laboratory Accreditation Program (NELAP) unless
noted in the comments, flags, or case narrative. If the report is to be used for
regulatory compliance, it should be presented in its entirety, and not be
altered.
Client Service Contact: 801.262.7299
Terracon IHI
Attn: Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
Work Order: 24I2392
Project: DERR Brent Redd LUST, Monticello,
Pro #AL067003/GZ
10/3/2024
Approved By:
Mark Broadhead, Project Manager
9632 South 500 West Sandy, Utah 84070
Serving the Intermountain West since 1953
801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com
Page 1 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: B-3R
Lab ID: 24I2392-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 13:50
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/1/2410/1/240.050 EPA 8260D/5030B3.49Benzene
mg/L 10/1/2410/1/240.125 EPA 8260D/5030B1.18Ethylbenzene
mg/L J-LOW-C10/1/2410/1/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.310Naphthalene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.081Toluene
mg/L 10/1/2410/1/240.375 EPA 8260D/5030B5.19Xylenes, total
Gasoline Range
mg/L 10/1/2410/1/240.375 EPA 8260B/C /5030A/[CALC]26.5Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 C5.9Diesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 2 of 16Page 2 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-14
Lab ID: 24I2392-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 14:20
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/1/2410/1/240.005 EPA 8260D/5030B0.034Benzene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L J-LOW-C10/1/2410/1/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/1/2410/1/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030BNDToluene
mg/L 10/1/2410/1/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/1/2410/1/240.125 EPA 8260B/C /5030A/[CALC]1.96Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 3 of 16Page 3 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-15
Lab ID: 24I2392-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 15:50
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/1/2410/1/240.050 EPA 8260D/5030B2.06Benzene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.202Ethylbenzene
mg/L J-LOW-C10/1/2410/1/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.024Naphthalene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.032Toluene
mg/L 10/1/2410/1/240.038 EPA 8260D/5030B0.334Xylenes, total
Gasoline Range
mg/L 10/1/2410/1/240.125 EPA 8260B/C /5030A/[CALC]4.10Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 4 of 16Page 4 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-16
Lab ID: 24I2392-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 16:00
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/1/2410/1/240.100 EPA 8260D/5030B7.55Benzene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.203Ethylbenzene
mg/L J-LOW-C10/1/2410/1/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.037Naphthalene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.018Toluene
mg/L 10/1/2410/1/240.038 EPA 8260D/5030B0.311Xylenes, total
Gasoline Range
mg/L 10/1/2410/1/240.125 EPA 8260B/C /5030A/[CALC]10.4Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 C1.5Diesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 5 of 16Page 5 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-17
Lab ID: 24I2392-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 16:47
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/1/2410/1/240.100 EPA 8260D/5030B9.10Benzene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B1.01Ethylbenzene
mg/L J-LOW-C10/1/2410/1/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.198Naphthalene
mg/L 10/1/2410/1/240.012 EPA 8260D/5030B0.028Toluene
mg/L 10/1/2410/1/240.038 EPA 8260D/5030B1.06Xylenes, total
Gasoline Range
mg/L 10/1/2410/1/240.125 EPA 8260B/C /5030A/[CALC]17.6Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 C3.3Diesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 6 of 16Page 6 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-18
Lab ID: 24I2392-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 17:32
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030B0.686Benzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]0.686Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 C1.2Diesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 7 of 16Page 7 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-19
Lab ID: 24I2392-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 11:23
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030B0.012Benzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030B0.012Ethylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 8 of 16Page 8 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-5R
Lab ID: 24I2392-08Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 12:12
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030B0.651Benzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030B0.176Ethylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030B0.024Naphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030B0.229Xylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]2.15Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 9 of 16Page 9 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-7
Lab ID: 24I2392-09Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 13:57
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030B0.026Benzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030B0.014Ethylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]1.90Gasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 10 of 16Page 10 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-20
Lab ID: 24I2392-10Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 14:34
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030B0.057Benzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 11 of 16Page 11 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: MW-21
Lab ID: 24I2392-11Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 15:17
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 10/2/2410/2/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 12 of 16Page 12 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: Field Blank
Lab ID: 24I2392-12Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/25/24 15:35
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L J-LOW-C10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 13 of 16Page 13 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Sample ID: Trip Blank
Lab ID: 24I2392-13Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 9/24/24 0:00
Preparation
Date/Time
Sampled By: Mark Lilly
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 10/2/2410/2/240.005 EPA 8260D/5030BNDBenzene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L J-LOW-C10/2/2410/2/240.008 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 10/2/2410/2/240.012 EPA 8260D/5030BNDToluene
mg/L 10/2/2410/2/240.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 10/2/2410/2/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 14 of 16Page 14 of 16
xx
Chemtech-Ford Laboratories
Serving the Intermountain West Since 1953
Certificate of Analysis
9632 South 500 West
Sandy, UT 84070
O:[phone] F: [phone]
www.ChemtechFord.com
Terracon IHI
Amy Austin
6949 South High Tech Drive
Midvale, UT 84047
PO#:
Receipt:
Date Reported:
Project Name:
AL067003/GZQ-57-TER, Task 1e
9/26/24 13:36 @ 3.3 °C
10/3/2024
DERR Brent Redd LUST, Monticello, Pro
#AL067003/GZ
Report Footnotes
Abbreviations
ND = Not detected at the corresponding Minimum Reporting Limit (MRL).
1 mg/L = one milligram per liter or 1 mg/kg = one milligram per kilogram = 1 part per million.
1 ug/L = one microgram per liter or 1 ug/kg = one microgram per kilogram = 1 part per billion.
1 ng/L = one nanogram per liter or 1 ng/kg = one nanogram per kilogram = 1 part per trillion.
On calculated parameters, there may be a slight difference between summing the rounded values shown on the report
vs the unrounded values used in the calculation.
Flag Descriptions
J-LOW-C = Estimated low due to low recovery of CCV
Project Name: DERR Brent Redd LUST, Monticello, Pro #AL06700 CtF WO#: 24I2392
www.ChemtechFord.com
Page 15 of 16Page 15 of 16
Page 16 of 16