DERR-2025-004400

Subsurface Investigation Report
Compass Minerals Ogden Inc.
765 North 10500 West
Ogden, Utah 84404
Facility ID: 1200071, Release OMG

June 6, 2025

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
EXECUTIVE SUMMARY
Tetra Tech, Inc. has conducted a subsurface investigation for Compass Minerals Ogden Inc. (Compass Minerals)
at its Ogden, Utah, facility to address a diesel release from underground piping at a fueling station (Site). The
failed piping, causing the leak, has since been repaired. The release was identified when red dye diesel
appeared in a stormwater retention pond. Compass Minerals initiated recovery efforts, collecting approximately
285 gallons of diesel as of May 13, 2025. The incident was reported to the Utah Department of Environmental
Quality, Division of Environmental Response and Remediation (DERR). Tetra Tech utilized Direct Push Services
to drill 22 soil borings, converting twelve of them into monitoring wells, and collected soil and groundwater
samples for applicable laboratory analysis. The laboratory results showed elevated levels of benzene,
naphthalene, and total petroleum hydrocarbons (gasoline and diesel range) in soil and groundwater, exceeding
applicable DERR screening levels.
Subsurface soils encountered within the soil borings generally consisted of approximately 5 feet of granular
manmade fill underlain by silty clay (CL-ML), and silt (ML), underlain by poorly to well-graded sand (SP to SW) to
the maximum depth explored of 20 feet below ground surface (bgs). The estimated permeability for the upper
man-made fill is on the order of 1 × 10-4 cm/s, and the native silt and clay have a permeability of 1 × 10-5 cm/s,
resulting in relatively low groundwater flow velocities across the Site, which would slow plume expansion.
Red dye diesel was measured in three wells in April 2025: MW-T4 (8.00 feet), MW-T5 (4.93 feet), and MW-B-T2
(4.50 feet). Groundwater flows northwest with localized movement toward the stormwater retention pond. The
dissolved phase diesel plume covers 280,000 square feet, and the dissolved benzene plume covers 200,000
square feet, both migrating northwest. Both plumes are defined on all sides with perimeter samples below Utah
Initial Screening Levels (ISLs). Because of the size of Compass Minerals property and the location of the release
relative to property boundaries, there is no risk of the plume migrating off-site.
Compass Minerals is in the process of designing and installing a diesel recovery trench. The trench will be
installed at the south end of the stormwater retention pond where diesel was discovered. Operation of the
recovery trench is expected in June 2025. Tetra Tech recommends expanding the system to include larger-scale
diesel recovery. Recovery could be with trenches placed orthogonal to the direction of localized groundwater
flow, well points, or a combination of the two. Tetra Tech further recommends continuing diesel collection and
maintaining and placing absorbent booms within the stormwater retention pond to prevent migration to the
outfall that drains to the west.
Observations and sampling are performed routinely to check the discharge from the stormwater retention pond
at a Compass Minerals effluent ditch for the presence of diesel; none has been observed to date. A potable
waterline was identified that traverses east -west across the plume area . The potable water line was tested for
benzene, toluene, ethylbenzene, xylenes, naphthalene (BTEXN), methyl-tert -butyl ether (MTBE), total petroleum
hydrocarbons (TPH ) as gasoline (GRO), and diesel (DRO). Results of the analysis confirmed that there is no
known impact on the water supply.
A search of the Utah Division of Water Rights for wells near the Site found five wells within a one-mile radius.
The closest is approximately 4,000 feet to the east, well beyond the horizontal extent of the release.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah

Table of Contents
Executive Summary ............................................................................................................................................... i
1. Introduction.................................................................................................................................................. 1
1.1 Site History ........................................................................................................................................ 1
1.2 Historical Aerial Photographs ............................................................................................................... 2
2. Site Description and Maps.............................................................................................................................. 2
3. Nature of Release and Free Product Recovery Report ........................................................................................ 2
4. Investigation Methodology .............................................................................................................................. 3
4.1 Soil Sampling ..................................................................................................................................... 4
4.2 Monitoring Wells and Groundwater Sampling ......................................................................................... 4
4.3 Quality Assurance ............................................................................................................................... 5
5. Results ........................................................................................................................................................ 5
5.1 Hydrogeological Conditions .................................................................................................................. 6
5.2 Soil Results ....................................................................................................................................... 6
5.3 Groundwater Results .......................................................................................................................... 7
5.4 Water Line Sampling ........................................................................................................................... 7
6. Tier 1 Criteria................................................................................................................................................ 7
7. Conclusions.................................................................................................................................................. 9
8. Recommendations ........................................................................................................................................ 9
9. References................................................................................................................................................. 11

List of Figures
Figure 1 Project Site Location
Figure 2 Boring Location and Proximity Map
Figure 3 Groundwater Elevations and Flow Direction, February 21, 2025
Figure 3B Groundwater Elevations and Flow Direction, April 10, 2025
Figure 4 Inferred Diesel Product Extent and Measured Diesel Thickness
Figure 5 Soil Analytical Detections
Figure 6 Groundwater Analytical Detections
Figure 7 Inferred Extent of Benzene
Figure 8 Inferred Extent of Diesel Range Organics (DRO)
Figure 9 Cross Section Map

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah

List of Tables
Table 1 Summary of Groundwater Elevations
Table 2 Summary of Soil Analytical Results
Table 3 Summary of Groundwater Analytical Results
Appendices
Appendix A - Property and Well Radius Search Information
Appendix B - Compass Minerals Release Photolog
Appendix C - Compass Minerals Free Product Recovery Trench and Outfall Sampling Laboratory Reports
Appendix D - Soil Boring Logs
Appendix E - Soil Boring Photo Log
Appendix F - Geologic Cross Sections
Appendix G- Laboratory Reports

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
1. Introduction
Tetra Tech , Inc. (Tetra Tech) conducted a subsurface investigation on behalf of Compass Minerals Ogden Inc.
(Compass Minerals), located at 765 North 10500 West, Ogden, Utah (Site), to investigate a diesel release. The
source of the release was identified as the underground piping at a fueling station, which is associated with two
10,000-gallon aboveground storage tanks (AST s). The release was discovered when red-dye diesel appeared
within a stormwater retention pond approximately 200 feet north of a diesel fueling station . The stormwater
retention pond is connected to a spillway approximately 650 feet to the west, and can discharge into a drainage
canal if it reaches capacity. Compass Minerals implemented free product recovery and installed adsorbent
booms in the stormwater retention pond to contain and remove diesel. As of May 13, 2025, approximately 285
gallons of diesel have been recovered from the stormwater retention pond. Ongoing efforts are continuing to
collect any accumulated diesel.
The release was reported to the Utah Department of Environmental Quality, Division of Environmental Response
and Remediation (DERR) on December 20, 2024. In response, the DERR sent a letter dated January 7, 2025,
requiring a Subsurface Investigation Report (SIR) to be completed within 90 days of receipt of the DERR letter.
Compass Minerals requested an extension, and DERR has granted a 60-day extension with a new due date of
June 9, 2025. The DERR’s Facility Identification for the Compass Minerals is 1200071, with an assigned
Release identification OMG. The Site location and features are shown on Figures 1 and 2.
1.1 Site History
The Compass Minerals facility utilizes solar evaporation ponds to extract mineral salts from the brine of the
Great Salt Lake. This facility produces sodium chloride, potassium sulfate, and magnesium chloride products.
The process involves pumping mineral-rich brine into shallow ponds where the sun and wind evaporate the
water, leaving crystallized minerals.
In 1989, Compass Minerals (then called Great Salt Lake Minerals Corporation) reported a release from a
1,000-gallon waste oil underground storage tank (UST) located next to the two 10,000-gallon ASTs. The release
was discovered during the removal of the UST and was reported on August 3, 1989, to the Utah Department of
Health, Bureau of Solid & Hazardous Waste. The agency issued a letter assigning release EFGI, requiring
subsequent reporting and remediation. An investigation was performed, and a report prepared by CBC Enviro,
dated November 13, 1990, which described impacts around the location of the current ASTs and South Fueling
Station (please see Figure 1 for locations of the fueling stations). CBC Enviro excavated four test pits in the
vicinity of ASTs and the waste oil tank. Depth to water was encountered between 6.5 and 8 feet bgs. Soil and
groundwater samples were collected and analyzed for Oil and Grease by EPA Method 413.1. Results confirmed
that oil and grease were present in both soil and groundwater. Additionally, free product was encountered in
one of the test pits (TP-1, located adjacent to the South Fueling Station ), which was identified as diesel. Figure
3-1 “Site Plan” from CBC Enviro’s report is presented in Appendix A, shows the locations of waste oil tank, ASTs,
and the test pits.
Wasatch Geotechnical Inc. (Wasatch) conducted another subsurface investigation with the findings presented
in a report dated February 3, 1992. As part of that investigation, eleven test pits were excavated . Groundwater
was encountered at depths ranging from 6.5 to 8 feet bgs. Groundwater flow was determined to flow to the
southwest. Diesel was encountered in some of the test pits, and plume delineation was found to extend from
the ASTs southwest approximately 320 feet. Figure 4, “Soil Chemistry Map: TPH Oil and Grease,” from the
Wasatch report, presented in Appendix A, shows the locations of the waste oil tank, the two 10,000-gallon
ASTs, and delineation of the plume in 1992, estimated at 45,000 square feet.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
Wasatch made the following conclusions and recommendations in its report: “The remote site location and low
permeability of surrounding site soils suggest full site remediation would not be cost-effective or necessary for
protection of public health. Instead, we recommend a program of annual groundwater monitoring to assess the
progress of the natural biological breakdown of petroleum hydrocarbons (as apparent by the improved site
condition since initial investigations in August 1990) and to watch for further hydrocarbon migration.”
In a letter dated September 22, 2003, the Utah DERR issued a No Further Action letter to Great Salt Lake
Minerals Corporation, stating that the release did not pose a threat to human health or the environment.
1.2 Historical Aerial Photographs
Tetra Tech reviewed historical aerial photographs from Google Earth for the years 2002, 2010, 2011, 2022,
and 2023. The pictures from 2022 and earlier do not show the stormwater retention pond; the photograph
from 2023 does. It is assumed the stormwater retention pond was constructed in 2022 or 2023.
2. Site Description and Maps
Compass Minerals' east -side property is comprised of approximately 1,000 acres of fee-owned land with
additional operations and evaporative ponds on sovereign lands of Utah that Compass Minerals leases. The
distance from the release location to the interior of the large facility to the west is greater than 2,000 feet .
West and north of the Site are sovereign lands of Utah, leased by Compass Minerals. Land northeast of the
Site is owned by Western Basin Land and Livestock, and is used for agricultural purposes. Land east of the
property is a road, and east of that is property used for grazing. Land to the s outh of the Site is owned by
Western Zirconium, used for industrial purposes. Appendix A contains a property map obtained from Weber
County, which shows the Compass Minerals property boundaries and the adjacent landowners. Distance to
any external property line from the release is greater than 1,000 feet in all directions.
The Mobile Maintenance Shop is located near the release Site. The building is used for maintenance
operations and has slab -on-grade concrete floors. The building location is shown on Figure 2 .
Utilities surrounding the perimeter of the Site and serving the property include communications, underground
power, telephone, natural gas, water, and sewer. Utilities near the release include underground power, natural
gas, water, and sewer. Sanitary sewer lines in the vicinity are connected to septic tanks. Potable water
traverses east-west across the diesel plume area, connecting the Lube Shed and the Mobile Maintenance
Shop . The stormwater retention pond is connected to an outfall approximately 650 feet to the west,
discharging into a Compass Minerals-owned drainage canal. The canal is discharged into the Great Salt Lake
approximately one mile to the southwest. Site utilities are shown on Figure 2.
3. Nature of Release and Free Product Recovery Report
On December 11, 2024, Compass Minerals’ Environmental Manager was notified of a potential petroleum spill
due to the presence of a layer of red off -road diesel on the surface of a small pool of water retained in a
stormwater retention pond. At that time, it was believed that the diesel was most likely caused by a haul truck
with an overfilled tank leaking fuel from the breather. Compass Minerals undertook measures to contain the
residual diesel in the stormwater retention pond. On December 18, 2024, maintenance staff followed up with
the Environmental Manager to report the presence of diesel on the water surface in the same area, and
suspected that the spill may instead be the result of a leak from the aboveground tank system. Compass
Minerals staff continued to investigate the potential leak but were not able to locate an active leak in the tanks
or aboveground lines at that time. After f urther investigation, staff suspected that an underground line from the

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
ASTs to one of the two fueling stations may be leaking. It was initially believed that the leak came from
underground piping emanating from the North Fueling Station. However, Compass Minerals retained a third-
party contractor to assess the underground lines of the fuel system, and on December 26, the contractor
determined that the leak was the result of a failed fitting on a line in the transfer sump at the South Fueling
Station. The fitting has since been replaced, and the leak repaired.
To abate the free product in the stormwater retention pond, Compass Minerals placed absorbent booms around
the diesel and began pumping it into 55-gallon drums to prevent its spread. Efforts are ongoing, and as of May
13, 2025, approximately 285 gallons of diesel have been recovered from the stormwater retention pond.
Absorbent booms are disposed of by MP Environmental in accordance with Utah solid waste regulations.
Appendix B includes photographs taken by Compass Minerals of the actions taken, point of release, and
release area. Photographs 9 and 10 show where the release originated. Other pictures show recovery efforts
and the stormwater retention pond where the diesel was discovered.
The stormwater retention pond, if at capacity, can drain to a spillway, which empties into a Compass Minerals-
owned effluent ditch located approximately 650 feet to the west . Compass Minerals initiated collecting effluent
samples from the drainage canal at Sample Point A (See Figure 2 ) and analyzing them for the presence of TPH
DRO by the EPA Method 8015. Collection frequency was initially every three days, then reduced to once a week.
No detections of diesel have been found. Compass Minerals later moved the sampling point upstream to
Sample Point B (see Figure 2 ). Samples have all been non-detect for TPH DRO. Laboratory reports are included
in Appendix C.
Compass Minerals is installing a free product interceptor trench at the south end of the stormwater retention
pond. The trench will be approximately 50 feet long, centered at the south end of the retention pond, and
traversing east to west. It will be constructed with a width of 2 feet and a depth of 8 feet. A 20-inch HDPE
perforated sump will be installed in the middle, with two lateral 8-inch perforated PVC collector pipes
intersecting the sump. Situated within the sump will be a float-activated skimmer pump that will pump diesel to
an OWS , where the diesel will be skimmed and pumped to 285-gallon totes for off-site disposal. Water will then
be pumped through a granulated activated carbon vessel before returning the water to the stormwater
retention pond. A copy of the process flow diagram and construction details of the trench are presented in
Appendix A. The Utah Division of Air Quality (DAQ) has been notified of Compass Minerals’ intent to operate the
system. The DAQ has requested a letter describing the system and operations. Compass Minerals is creating a
letter to be delivered to DAQ within the next few weeks. Compass Minerals has also notified the Utah Division of
Water Quality (DWQ) of its plans. Compass Minerals will obtain all necessary permits for operations. Plans for
additional trenches or recovery wells are in progress, and any updates to the free product recovery plan will be
provided to the DERR.
4. Investigation Methodology
The scope of the subsurface investigation consisted of drilling 22 soil borings, with most drilled to a depth of 10
feet, two extending to 15 feet, and one boring reaching a depth of 20 feet. Soil and groundwater samples were
collected from soil borings for field screening and analytical testing. Twelve of the soil borings were converted
into monitor wells to collect depth-to-water measurements and groundwater samples. Figure 2 illustrates the
locations of the soil borings and monitoring wells.
The investigation aimed to determine the horizontal and vertical extents of residual petroleum hydrocarbons in
soil and groundwater at the Site. The scope of work performed is outlined below and detailed in the subsequent
paragraphs.
• Advanced 22 soil borings to 10-20 feet below ground surface (bgs).

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
• Collected soil samples continuously using the direct push drilling technique.
• Submitted a minimum of one soil sample per boring for laboratory analytical testing.
• Converted 12 of the soil borings into 2-inch diameter monitoring wells screened from 2.5 to 10 feet and
completed the wells with traffic-rated flush mount vaults.
• Develop ed each monitoring well using surging and hand-bailing techniques.
• Surveyed the tops of the well casings.
• Obtained depth-to-water measurement s from the monitor wells.
• Collected groundwater samples from the monitoring wells on February 14 and 21, 2025.
• Collected groundwater samples from monitoring wells on April 10, 2025.
4.1 Soil Sampling
Fourteen soil borings were drilled between February 13 and 21, 2025, and eight borings were drilled on April
10, 2025, at the locations shown on Figure 2, using a direct push drill rig operated by Direct Push Services
(DPS). Tetra Tech provided field observations and oversight of the drilling.
The Utah 811 One Call (Blue Stakes) was notified before the drilling for the location of public utilities, and a
private utility locator was retained to conduct ground-penetrating radar to mark the target soil boring locations
and confirm the absence of underground utilities. The boreholes were performed sequentially, with each
borehole measuring two inches in diameter and extending to a depth of at least five feet below the groundwater
table (i.e., 10 feet). During drilling, the soil lithologies were logged, and the dates, times, and depths of soil
sample collection are provided in the Soil Boring Logs, included in Appendix D. A photolog of the soil samples is
included in Appendix E.
A minimum of one subsurface soil sample was collected as a grab sample from each borehole for laboratory
analysis. Soil samples were collected from areas of visibly impacted soils, soils showing detection of volatile
organic vapors with the photo-ionization detector (PID), or from a depth immediately above the groundwater
table if no observations of potential impacts were made. The samples were placed on ice and delivered to
Chemtech-Ford Laboratories for analysis of the following parameters:
• BTEXN, MTBE, by Method 8260 B.
• TPH GRO by Method 8260B and TPH DRO by Method 8015.
Section 5.1 presents the results from soil sample collection and analyses. Soil cuttings from the sampling
sleeves were managed as solid waste, with materials placed in plastic garbage bags and disposed of by DPS.
4.2 Monitoring Wells and Groundwater Sampling
Twelve soil borings were completed as new, 2-inch-diameter monitoring wells consisting of PVC well screens
and riser pipes with protective, traffic-rated well covers. The completed wells are identified as MW-T1, MW-T2,
MW-T3, MW-T4, MW-T5, MW -T6, MW -T7, MW-T8, MW -T9, MW-B-T1, MW-B-T2, and MW -B-T3 at the locations
shown on Figure 2 . The monitoring wells were developed by Tetra Tech staff following installation and before
sampling using a surge-block method, followed by purging of turbid water until visible turbidity was minimal or
nonexistent. Soil borings that were not completed as monitoring wells were sampled for groundwater using a
driller-provided expendable tip on the drill rod that allowed the collection of a one-time groundwater sample
with a peristaltic pump and new disposable tubing.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
The top of casing (TOC) elevations for the wells were surveyed relative to mean sea level (MSL). The surveyed
TOCs ranged from 4,166.41 feet relative to mean sea level (MSL) at MW-B-T3 (north end of the stormwater
retention pond) to 4,171.41 feet relative to MSL at MW-B-T2, located at the south end of the investigation area.
Prior to groundwater sampling at the wells, the depths to groundwater and the product were measured on
February 14 and 21, and again on April 10, 2025, using an oil-water interface probe. The probe was
decontaminated between wells using an Alconox® detergent solution, followed by a rinse with deionized water.
The depth-to-water measurements were used to assess hydrogeological conditions.
Groundwater samples were collected from the new wells on February 14, 21, and April 10, 2025, using
disposable polyethylene bailers. Samples were collected after a minimum of three well volumes had been
purged from each well. Purge water was disposed of in the stormwater retention pond. Groundwater samples
were collected from completed monitoring wells or soil borings. The samples were placed on ice and delivered
to Chemtech-Ford Laboratories for analysis of the following parameters:
• BTEXN, MTBE by Method 8260B
• TPH-GRO by Method 8260B and TPH-DRO by Method 8015
The hydrogeological assessment and results from groundwater sampling and analyses are presented in Section
5.2.
4.3 Quality Assurance
The person collecting the samples was responsible for sample custody from the time of sample collection to
receipt by the laboratory or until samples were shipped. A sample is considered under custody if one of the
following conditions applies:
• The sample is in a person’s possession.
• The sample is in that person’s view after being in his or her possession.
• The sample was in that person’s possession and then placed in a secure location.
• The sample is in a designated secure area.
All samples sent to the laboratory were provided with a chain-of -custody record accompanied by their assigned
sample numbers.
5. Results
The investigation results are presented in this section, including the hydrogeological data (and presence of free
product), soil data, and groundwater data. The results are evaluated in relation to applicable Utah regulations
governing releases from below - and above-ground storage tanks. The analytical results are compared to DERR
screening criteria for releases from leaking underground storage tanks (LUSTs) and ASTs containing fuels. The
DERR developed the DERR Initial Screening Levels (ISLs) and the Risk-Based Corrective Action (RBCA) Tier 1
screening criteria to assess potential risks to human health and/or the environment from petroleum releases.
The comparison to screening levels is used to assess the potential risks the release poses and identify possible
receptors that could be impacted. The assessment involves considering distances to property boundaries,
identifying utility corridors that may be affected, the distance to surface water bodies, depth to groundwater,
soil lithology, and constituent levels in relation to the Utah ISL and RBCA Tier 1 screening criteria.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
5.1 Hydrogeological Conditions
Tetra Tech has prepared groundwater elevation contour maps for the Site based on the survey and depth-to-
water measurements for the 12 new wells. Groundwater was encountered during drilling activities at depths
ranging from 2.5 to 7 feet below ground surface (bgs). Static depth to water measured on February 21, 2025, in
the monitoring wells ranged from 1.66 to 8.58 feet bgs. Static water elevations ranged from 4164.51 feet
above MSL in MW-B-T3 to 416 9.85 feet above MSL in MW-B-T1, shown in Table 1. Figure 3 shows the
measured water table elevations and the resultant, interpolated, groundwater contours. The groundwater flow
is toward the north with a hydraulic gradient of 0.011 feet/foot measured between MW-T1 and MW -B-T3.
Groundwater elevations were corrected where necessary for the presence of diesel. Diesel was measured in
two wells, MW-T4 (2.08 feet) and MW-T5 (7.41 feet).
Static depth to water measured on April 10, 2025, in the monitoring wells ranged from 1.66 to 9.40 feet bgs.
Static water elevations ranged from 4161.47 feet above MSL in MW-T9 to 4169.51 feet above MSL in MW-B-
T1, shown in Table 1. Figure 3 B shows the measured water table elevations and the resultant, interpolated,
groundwater contours for the April sampling. The groundwater flow is toward the northwest with a hydraulic
gradient of 0.01 2 feet/foot measured between MW-T3 and MW-T9. Groundwater elevations were corrected
where necessary for the presence of diesel. Diesel was measured in three wells: MW-T4 (8.00 feet), MW-T5
(4.93 feet), and MW-B-T2 (4.50 feet).
Groundwater flow direction was assessed on February 10, 2025, and was determined to flow from the South
Fueling Station northward toward the stormwater retention pond, which acts as a low point, drawing the diesel
plume toward it. Figure 4 shows an inferred diesel plume. At present, the plume does not appear to underlie the
Lube Shed or Mobile Maintenance Shop,
A search of the Utah Division of Water Rights for wells in the vicinity of the Site found five wells within a one-
mile radius. The closest is approximately 4,000 feet to the east. None of the wells are being used as culinary
water sources. The results of the well search are presented in Appendix A.
5.2 Soil Results
Subsurface soils encountered within the soil borings generally consisted of approximately 4 to 5 feet of granular
manmade fill underlain by silty clay (CL-ML), and silt (ML), underlain by poorly to well-graded sand (SP to SW) to
the maximum depth explored of 20 feet bgs. The soil borings performed for this investigation are described
herein and shown on the Soil Boring Logs in Appendix D and Soil Boring Photo Logs in Appendix E. Cross
sections developed from the boring logs are presented in Appendix F.
During the advancement of the soil borings, the subsurface soils exhibited PID readings above the background
level for nonspecific volatile organic compounds, ranging from 0.1 to 219.8 parts per million (ppm).
The soil sample analytical detections from each soil boring and sample depth are presented in Table 2. The
results are compared against the following Utah DERR screening criteria:
• Soil ISLs developed by DERR as conservative, preliminary evaluation criteria for petroleum hydrocarbon
constituents associated with LUST sites.
• Soil RBCA Tier 1 Screening Criteria adopted by DERR , which are less conservative than ISLs and can be
applied to LUST site s for evaluation and cleanup under specific geographical criteria specified by DERR.
Soil analytical detections above the screening levels are shown on Figure 5. All samples from borings around
the perimeter reported BTEXN, TPH-GRO, and TPH-DRO below the ISLs. Soil borings MW-B-T3, MW-T4, and MW-
T6, within the interior of the impacted zone, reported analytical detections of TPH DRO above the RBCA Tier 1.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
Vertical delineation of soil impacts was found to extend to 10 feet bgs. This is verified through field
observations, including visual inspections, and with the PID, with confirmation provided by soil sampling at 10
feet, which shows soil results below the ISLs. Copies of the laboratory reports are available in Appendix G.
5.3 Groundwater Results
The groundwater analytical sample results are presented in Table 3. The results are compared against the
following state and federal regulatory standards and screening criteria in Table 3:
• Groundwater ISLs developed by the DERR as conservative, preliminary evaluation criteria for petroleum
hydrocarbon constituents associated with LUST sites.
• Groundwater Tier 1 Screening Criteria developed by DERR, which are less conservative than ISLs and
can be applied to LUST sites for evaluation and cleanup under specific geographical criteria specified by
DERR.
• EPA Industrial Vapor Intrusion Screening Levels (VISLs) are the groundwater concentrations of volatile
organic compounds that could pose a vapor intrusion potential to indoor air spaces.
Groundwater analytical detections above the screening levels are shown on Figure 6. Groundwater samples
collected from the soil borings drilled in February are combined with the groundwater sampling data from Apri l
2025. Samples from B-T6, B-T9, B-T10, MW-B-T2, MW-T4, MW-T5, and MW-T6 reported analytical detections of
TPH-DRO above the RBCA Tier 1 screening level. Naphthalene was found above the RBCA Tier 1 screening level
in B-T6 and B-T10, and benzene in MW-T2 and MW-T4 above the RBCA Tier 1 screening level. Figures 7 and 8
show inferred dissolved-phase extents for benzene and TPH-DRO, respectively. The dissolved phase DRO plume
encompasses an area of approximately 280,000 square feet, with lateral spread to the west. The benzene
plume is approximately 200,000 square feet and shows a more northwestern migration. Both figures show that
the plume is defined on all sides, with all perimeter samples below ISLs.
Groundwater concentrations were compared to the EPA industrial VISLs. Samples from BT -10 and MW -T2,
which are approximately 30 feet from the maintenance buildings, both exceed the VISL for benzene and
ethylbenzene. Sample BT-10 also exceeds the VISL for naphthalene.
5.4 Water Line Sampling
Section 2.0 of this report states that a water line servicing the Mobile Maintenance Shop traverses east-west
across the diesel plume area. Compass Minerals collected a sample from a faucet connected to the waterline
to analyze BTEXN, MTBE, TPH GRO , and DRO using EPA Methods 8260 and 8015. The results of the sampling,
included in Appendix G, demonstrate that there are no impacts, with non-detect levels for all constituents
analyzed. The location of the waterline is shown on Figure 2.
6. Tier 1 Criteria
The release results were evaluated in relation to the Utah RBCA Tier 1 criteria to assess potential risks to
human health or the environment. The process is used to determine the potential risks posed by the release
and identify possible receptors that could be impacted. Receptors include distances to the property boundaries,
identification of utilities that could be affected, distance to surface water bodies and depth to groundwater, soil
lithology, and contamination levels relative to the Utah ISL and RBCA Tier 1 screening criteria, The evaluation
process also reviews the release mechanics, associated repairs to stop the leak, and mitigation measures
taken. The Utah RBCA Tier 1 Screening Criteria are applicable when the following conditions are met.

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Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
1. No buildings, property boundaries, or utility lines within 30 feet of the highest measured concentration
of any contaminant that is greater than the initial screening levels but less than or equal to the Tier 1
screening levels AND,
2. No water wells or surface water within 500 feet of the highest measured concentration of any
contaminant that is greater than the initial screening levels but less than or equal to the Tier 1
screening levels.
Below is an inventory of receptors and Site information to evaluate constituent levels relative to the Utah ISL
and RBCA Tier 1 screening criteria , defining the immediate vicinity.
• Subsurface soils encountered within the soil borings generally consisted of approximately 5 feet of
granular manmade fill underlain by silty clay (CL -ML), and silt (ML), underlain by poorly to well-graded
sand (SP to SW) to the maximum depth explored of 20 feet bgs. The estimated permeability for the
upper man-made fill is on the order of 1 × 10 -4 cm/s, and the native silt and clay have a permeability of
1 × 10-5 cm/s, resulting in relatively low groundwater flow velocities across the Site, which would slow
plume expansion.
• The Compass Minerals facility encompasses approximately 1,000 acres of land. The distance from the
release location in the facility's interior to the west is greater than 2,000 feet. Distance from the
release source to the north property line is approximately 1,500 feet, and distances to the east and
south are greater than 2,000 feet. West and north of the Site are the State of Utah's property, leased
by Compass Minerals for mineral extraction. Northeast of the Site is owned by Western Basin Land and
Livestock, which is used for agricultural purposes. East of the property is a road, and east of that are
wetlands. To the south is land owned by Western Zirconium, used for industrial purposes. Because of
the size of Compass Minerals, the plume is not at risk of expanding off -site.
• Utilities near the release include underground power, natural gas, water, sewer, and an underground
pipe connecting the stormwater retention pond to an outfall . Observations and effluent sampling are
performed routinely to check the outfall for the presence of diesel; none has been found to date.
Potable water traverses east -west across the plume area, making this a potential receptor. Testing of
the waterline for BTEXN, MTBE, TPH GRO, and DRO revealed that there is currently no impact on the
water supply.
• The quantity of diesel fuel released is unknown. Figure 4 shows an inferred diesel plume; it is noted that
the diesel does not appear to underlie the Mobile Maintenance Shop.
• A search of the Utah Division of Water Rights for wells near the Site found five wells within a one-mile
radius. The closest is approximately 4,000 feet to the east, well beyond the horizontal extent of the
release. The results of the well search are presented in Appendix A.
• Groundwater samples from B-T10 and MW-T2, which are approximately 30 feet from the Mobile
Maintenance Shop, both exceed the VISL for benzene and ethylbenzene. Sample B-T10 also exceeds
the VISL for naphthalene.
In review, the existing conditions are compared with the Tier 1 applicability criteria, which show that surface
water bodies are more than 500 feet from the release. A search of the Utah Division of Water Rights for wells in
the vicinity of the Site found that there are five wells within a one-mile radius. The closest is approximately
4,000 feet to the east, none are used for culinary purposes, with the release posing no threat. Utilities in the
vicinity include power, sewer, gas, and water. A potable water line traverses through the release area, making
this a potential receptor. Testing of the waterline for BTEXN, MTBE, TPH GRO, and DRO revealed that there is no
impact on the water supply. Samples from BT-10 and MW-T2, which are approximately 30 feet from the Mobile

9
Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
Maintenance Shop, exceed the VISLs. The vapor intrusion pathway requires further investigation to determine if
a complete pathway exists.
7. Conclusions
Tetra Tech has prepared this Subsurface Investigation Report for Compass Minerals to present the findings of
an investigation at the Release Site OMG. The laboratory results detected benzene, naphthalene, TPH-GRO, and
TPH-DRO levels in soil and groundwater samples above the Utah ISLs and the Utah RBCA Tier 1 screening
levels. During the initial investigation, red dye diesel was measured in three wells in April 2025 between the
South Fueling Station and the stormwater retention pond, with thicknesses of 8.00 feet in MW-T4, 4.93 feet in
MW-T5, and 4.50 feet in MW-B-T2 . Depth to water across the site ranged from 1.66 to 9.40 feet bgs in April
2025. Groundwater flows to the northwest with a hydraulic gradient of 0.012 feet/foot, with a more localized
flow from the South Fueling Station to the stormwater retention pond. The soils encountered consisted of
approximately five feet of granular, man-made fill, underlain by Lake Bonneville sediments ranging from non-
plastic silt to clayey silt, and further underlain by clean, poorly to well-graded sand.
Compass Minerals is installing a free product recovery trench to capture diesel before it enters the stormwater
retention pond. The failed piping that caused the release has been repaired, stopping the leak and preventing
additional accumulation of diesel in the subsurface.
Observations and effluent sampling are performed routinely to check the outfall from the stormwater retention
pond at Sample Point B for the presence of diesel; none has been found to date. The potable water line that
traverses east-west across the plume area was tested for BTEXN, MTBE, TPH GRO, and DRO , and it was
revealed that there is no impact on the water supply.
Vertical delineation of soil impacts was found to extend to 10 feet bgs. This was verified through field
observations, including visual inspections and with the PID, with confirmation provided by soil sampling at 10
feet, which shows soil results below the ISLs. The exception is at MW-T6, located in the northwest corner, where
soil impacts for TPH-DRO were detected above the ISL at a depth of 20 feet.
The dissolved phase DRO plume encompasses an area of approximately 280,000 square feet, with lateral
spread to the west. The benzene plume is approximately 200,000 square feet and shows a more northwestern
migration. Figures 7 and 8 show that the plume is laterally defined on all sides, with all perimeter samples
below ISLs.
The Compass Minerals facility encompasses approximately 1,000 acres of land. The distance from the release
location to the west property boundary is greater than 2,000 feet, the distance to the north property boundary is
approximately 1,500 feet, and distances to the east and south are greater than 2,000 feet. Because of the size
of Compass Minerals, the location of the release, and the distance to property boundaries, there is no risk of
the plume moving beyond Compass Minerals' property.
8. Recommendations
Based on the findings and conclusions presented in this report, Tetra Tech provides the following
recommendations for further work at the Compass Minerals facility.
• Continue free product collection and absorbent boom maintenance and placement within the
stormwater retention pond, where diesel is appearing, to prevent migration to the outfalls that drain to
the west.
• Continue to monitor the outfall at the drain canal for the presence of TPH as DRO.

10
Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah
• Implement larger-scale free product recovery operations down the centerline of the diesel plume.
Recovery could be with trenches placed orthogonal to the direction of localized groundwater flow, well
points, or a combination of the two.
• Perform monthly gauging of the three wells that show free product.
• Further evaluate the need for sub-slab soil gas sampling or indoor air sampling in the Mobile
Maintenance Shop near monitor wells MW-T2 and B-T10 for constituents that are above VISL.
Please contact Tetra Tech if you have questions about this report or require additional information. We
appreciate the opportunity to support Compass Minerals with this matter.
Respectfully submitted,
Tetra Tech, Inc.

Curt Stripeika, CC-0003 David Wilson, P.E., P.G.
Senior Project Manager Principal Engineer
[e-mail] [e-mail]
Cell 801.520.5029 Cell 801.916.6957

11
Subsurface Investigation Report for Compass Minerals Ogden, Inc. | 765 N 10500 W Ogden, Utah

9. References
Environmental Site Assessment, Great Salt Lake Minerals and Chemical Corporation, Waste Oil Tank Removal
Site, Ogden, Utah, CBC Enviro Engineering, November 13, 1990.
Site Investigation Report Release Site EFGI, Great Salt Lake Minerals and Chemical Corporation, Great Salt
Lake Solar Facility, Facility ID # 1200071, Ogden, Utah, February 1992.
Subsurface Investigation Reporting Requirements, Facility ID 1200071, Release ID OMG , Utah DEQ, DERR,
January 7, 2025.
Leaking Underground Storage Tank (LUST), Subsurface Investigation Report Guide, State of Utah, Department
of Environmental Quality, Division of Environmental Response and Remediation, May 2014.

Figures

N

1
0
50
0
W
N 10500 W
Figure 1:
Project Location Map
Date: 2/25/2025
Legend
Project Area
0 1,000 2,000500
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah
Compass Minerals
m
Security Gate
Main Admin Building
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
MW-B-T3
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-T8
MW-T9
B-T6
B-T5
B-T4
B-T8
B-T9
B-T7
B-T10
B-T11
B-T12
B-T13
Figure 2:
Boring Location and Proximity Map
Date: 6/4/2025
Legend
Boring location
Well location
Unknown metal
Underground power
Sewer
Gas
Water line
Oil water separator
Drain pipe to Sample Point B
Former diesel ASTs 0 200 400100
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
Mo
b
i
l
e

M
a
i
n
t
e
n
a
n
c
e

S
h
o
p
AS
T
s
So
u
t
h

F
u
e
l
i
n
g

S
t
a
t
i
o
n
Sample Point B
Lube Shed
Parking Lot
Sample Point A
D
i
r
e
c
t
i
o
n

o
f

S
t
o
r
m
w
a
t
e
r

F
l
o
w
North Fueling Station
4170
4169
4168
4167
4166
4165
4166.16
4166.98
4169.44
4167.5498
4166.1124
4164.51
4167.95 4169.27
4167.76
4169.85
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
B-T3
MW-T6 MW-T7
B-T2
B-T1
B-T6
B-T5
B-T4
B-T8
Figure 3:
February 21, 2025 Groundwater
Elevations and Gradient Map
Date: 2/25/2025
Legend
Boring location
Well Location
Groundwater Contour
0 125 25062.5
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah
G
r
o
u
n
d
w
a
t
e
r

F
l
o
w

D
i
r
e
c
t
i
o
n
±
416
8
416
7
41
6
6
41
6
5
416
4
4163
4162
4169
4165.85
4168.18
4169.22
4167.19
4165.64
4164.71
4167.18 4168.5
4168.36
4169.51
4163.25
4161.47
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
MW-B-T3
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-T8
MW-T9
B-T6
B-T5
B-T4
B-T8
B-T9
B-T7
B-T10
B-T11
B-T12
B-T13
Figure 3B:
April 10, 2025 Groundwater Elevations
and Gradient Map
Date: 4/17/2025
Legend
Boring location
Well location
Groundwater contour
0 150 30075
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah
Gr
o
u
n
d
w
a
t
e
r

F
l
o
w

D
i
r
e
c
t
i
o
n
±
U
n
i
o
n
P
a
c
i
f
i
c
8
4.93
4.5
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
MW-B-T3
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-T8
MW-T9
B-T6
B-T5
B-T4
B-T8
B-T9
B-T7
B-T10
B-T11
B-T12
B-T13
Figure 4:
Inferred Diesel Product Extent and
Measured Diesel Thickness
Date: 5/28/2025
Legend
Boring location
Well location
Inferred diesel product
extent
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
8 Thickness of diesel in
feet
U
n
i
o
n
P
a
c
i
f
i
c
U
n
i
o
n
P
a
c
i
f
i
c
MWT2
MWT3
MWT1
MWT4
MWT5
MW%T3
MWT6 MWT7
MW%T2
MW%T1
MWT8
MWT9
%T6
%T5
%T4
%T8
%T9
%T7
%T10
%T11
%T12
%T13
Figure 5:
Soil Analytical Detections
Date: 4/29/2025
Legend
Boring location
Well Location
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
$nalyte Units Results
TPH DRO mg/Ng 715
MWT7 # 5 ft
Only Detections above ISL
and Tier 1 Screening levels
are shown
$nalyte Units Results
TPH GRO mg/Ng 329
TPH DRO mg/Ng 5,100
MW%T3 # 5ft
$nalyte Units Results
TPH DRO mg/Ng 2,030
MW%T2 # 7 ft
$nalyte Units Results
TPH DRO mg/Ng 3,300
MW%T1 # 8 ft
$nalyte Units Results
TPH GRO mg/Ng 218
%en]ene mg/Ng 04
TPH DRO mg/Ng 5,410
MWT4 # 8 ft
$nalyte Units Results
TPH DRO mg/Ng 5,940
MWT6 # 9 ft
$nalyte Units Results
TPH DRO mg/Ng 2,020
%T6 # 8ft
$nalyte Units Results
TPH DRO mg/Ng 1,250
MWT2 # 6 ft
Notes
TPH Total Petrloeum Hydrocarbons
DRO Diesel Range Organics
GRO Gasoline Range Organics
mg/Ng milligram/Nilogram
Green Highlight indicates E[ceedance of Utah ,nitial Screening Levels
<elloZ Highlight ,ndicates E[ceedance of Utah Tier 1 Screening Levels
$nalyte Units Results
TPH DRO mg/Ng 530
%T9 # 7ft
$nalyte Units Results
TPH DRO mg/Ng 752
%T10 # 10ft
U
n
i
o
n
P
a
c
i
f
i
c
U
n
i
o
n
P
a
c
i
f
i
c
MWT2
MWT3
MWT1
MWT4
MWT5
MW%T3
MWT6 MWT7
MW%T2
MW%T1
MWT8
MWT9
%T6
%T5
%T4
%T8
%T9
%T7
%T10
%T11
%T12
%T13
Figure 6:
Groundwater Analytical Detections
Date: 4/29/2025
Legend
Boring location
Well Location
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
Notes
TPH Total Petrloeum Hydrocarbons
DRO Diesel Range Organics
GRO Gasoline Range Organics
mg/L milligram/liter
Green Highlight indicates Ec[eedence of Utah ,nitial Screening Levels
<elloZ Highlight ,ndicates E[ceedence of Utah Tier 1 Screening Levels
$nalyte Units Results
TPH GRO mg/L 3.36
%en]ene mg/L 0.065
TPH DRO mg/L 31
MW%T2
$nalyte Units Results
TPH GRO mg/L 4.33
%en]ene mg/L 0.191
TPH DRO mg/L 156
MWT5
$nalyte Units Results
TPH GRO mg/L 4.98
%en]ene mg/L 
TPH DRO mg/L 79.5
MWT4
$nalyte Units Results
TPH DRO mg/L 4.5
%T8
$nalyte Units Results
TPH GRO mg/L 7.51
%en]ene mg/L 0.028
Naphthalenemg/L 0.709
TPH DRO mg/L 903
%T6
Only Detections above ISL
and Tier 1 Screening Levels
are shown
$nalyte Units Results
TPH DRO mg/L 4.1
MW%T1
$nalyte Units Results
%en]ene mg/L 0.393
TPH DRO mg/L 2
MWT2
$nalyte Units Results
TPH DRO mg/L 8
%T7
$nalyte Units Results
TPH DRO mg/L 10
%T9
$nalyte Units Results
%en]ene mg/L 0.08
TPH DRO mg/L 3.8
MW%T3
$nalyte Units Results
TPH DRO mg/L 17.8
MWT6
$nalyte Units Results
TPH GRO mg/L 5.14
%en]ene mg/L 0.196
Naphthalenemg/L 0.784
TPH DRO mg/L 1,570
%T10$nalyte Units Results
%en]ene mg/L 0.039
%T13
U
n
i
o
n
P
a
c
i
fi
c
U
n
i
o
n
P
a
c
i
f
i
c
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
MW-B-T3
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-T8
MW-T9
B-T6
B-T5
B-T4
B-T8
B-T9
B-T7
B-T10
B-T11
B-T12
B-T13
Figure 7:
Inferred Extent of Dissolved Phase Benzene
Date: 5/28/2025
Legend
Boring location
Well Location
Inferred 0.005
mg/L benzene
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
0.497 mg/L
0.393 mg/L
0.028 mg/L
0.08 mg/L
0.191 mg/L
0.065 mg/L
0.196 mg/L
0.039 mg/L
0.393 mg/L Detected dissolved
phase benzene in mg/L
U
n
i
o
n
P
a
c
i
fi
c
U
n
i
o
n
P
a
c
i
f
i
c
B-T6
B-T5
B-T4
B-T8
B-T9
B-T7
B-T10
B-T11
B-T12
B-T13
MW-T2
MW-T3
MW-T1
MW-T4
MW-T5
MW-B-T3
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-T8
MW-T9
Figure 8:
Inferred Extent of Dissolved Phase
Diesel Range Organics
Date: 5/28/2025
Legend
Boring location
Well locations
Inferred 1.0
mg/L Diesel
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±
17.8 mg/L
4.1 mg/L
79.5 mg/L
4.5 mg/L
2 mg/L
903 mg/L
156 mg/L
31 mg/L
6 mg/L
8 mg/L
10 mg/L
1570 mg/L
10 mg/L Detected dissolved
phase diesel in mg/L
U
n
i
o
n
P
a
c
i
f
i
c
U
n
i
o
n
P
a
c
i
f
i
c
MWT2
MWT3
MWT1
MWT4
MWT5
MW%T3
MWT6 MWT7
MW%T2
MW%T1
MWT8
MWT9
%T6
%T5
%T4
%T8
%T9
%T7
%T10
%T11
%T12
%T13
Figure 9:
Cross Section Map
Date: 4/18/2025
Legend
Boring location
Well Location
0 180 36090
Feet
Compass Minerals
765 N 10500 W
Ogden, Utah±Cross Section Lines
W E
N
S
NW
SE

Tables

Well
Identification #
Top of Casing
Elevation
(ft)
Date Depth to Water
(ft)
Depth to
Product
(ft)
Product
Thickness
(ft)
Corrected Top of
Water Elevation
(ft)
Latitude Longitude
MW-T2 4,168.56 4/14/2025 2.71 4,165.85 41.2820883333 -112.2325483330
MW-T2 4,168.56 2/21/2025 2.40 4,166.16 41.2820883333 -112.2325483330
MW-B-T3 4,166.41 4/14/2025 1.70 4,164.71 41.2826616670 -112.2323966660
MW-B-T3 4,166.41 2/21/2025 1.90 4,164.51 41.2826616670 -112.2323966660
MW-T5 4,167.87 4/14/2025 6.08 1.15 4.93 4,165.64 41.2821833333 -112.2322116670
MW-T5 4,167.87 2/21/2025 3.38 1.3 2.08 4,166.11 41.2821833333 -112.2322116670
MW-T4 4,170.35 4/14/2025 9.40 1.4 8.00 4,167.19 41.2818116667 -112.2322500000
MW-T4 4,170.35 2/21/2025 8.58 1.17 7.41 4,167.55 41.2818116667 -112.2322500000
MW-T3 4,169.19 4/14/2025 1.01 4,168.18 41.2819616667 -112.2315450000
MW-T3 4,169.19 2/21/2025 2.21 4,166.98 41.2819616667 -112.2315450000
MW-T1 4,170.95 4/14/2025 1.73 4,169.22 41.2813966667 -112.2322283330
MW-T1 4,170.95 2/21/2025 1.51 4,169.44 41.2813966667 -112.2322283330
MW-B-T1 4,171.28 4/14/2025 1.77 4,169.51 41.2815362480 -112.2321957990
MW-B-T1 4,171.28 2/21/2025 1.43 4,169.85 41.2815362480 -112.2321957990
MW-B-T2 4,171.41 4/14/2025 6.56 2.06 4.50 4,168.36 41.2819647330 -112.2319365020
MW-B-T2 4,171.41 2/21/2025 3.65 4,167.76 41.2819647330 -112.2319365020
MW-T6 4,169.61 4/14/2025 2.40 4,167.21 41.2816458630 -112.2325740780
MW-T6 4,169.61 2/21/2025 1.66 4,167.95 41.2816458630 -112.2325740780
MW-T7 4,171.14 4/14/2025 2.64 4,168.50 41.2816457361 -112.2316740830
MW-T7 4,171.14 2/21/2025 1.87 4,169.27 41.2816457361 -112.2316740830
MW-T8 4,167.43 4/14/2025 4.18 4,163.25 41.2814716530 -112.2330655190
MW-T9 4,166.71 4/14/2025 5.24 4,161.47 41.2828791060 -112.2329469420
Facility ID 1200071, Release ID OMG
Table 1
Summary of Well Survey Sata
Compass Minerals
765 North 10500 West, Ogden, Utah 84404
Tetra Tech Project No. 117-115476-25011
Method PID 8260B 8260B 8260B 8260B 8260B 8260B 8260B 8015
Analyte
VOLATILE
ORGANIC
COMPOUNDS
GASOLINE
RANGE
ORGANICS
BENZENE TOLUENE ETHYLBENZENE XYLENES,
TOTAL NAPHTHALENE
METHYL TERT-
BUTYL ETHER
(MTBE)
DIESEL RANGE
ORGANICS
Units ppm mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg
-150 0.2 9 5 142 51 0.3 500
-1500 0.9 25 23 142 51 0.3 5000
MW-B-T1 @ 8 ft 2/13/2025 Result 26.7 125 <0.12 <0.30 <0.30 <0.90 <0.30 <0.18 3300
MW-B-T1 @ 10 ft 2/13/2025 Result 0 <3.31 <0.13 <0.33 <0.33 <0.99 <0.33 <0.2J-LOW-L <66
MW-B-T1 @ 10 ft 2/20/2025 Result 0 <3.09 <0.12 <0.31 <0.31 <0.93 <0.31 <0.19 <62
MW-B-T1 @ 15 ft 2/20/2025 Result 0 <3.32 <0.13 <0.33 <0.33 <1.00 <0.33 <0.20 <66
MW-B-T2 @ 7 ft 2/13/2025 Result 92.8 106 <0.12 <0.30 0.5 4.58 <0.30 <0.18 2030
MW-B-T2 @ 10 ft 2/20/2025 Result 5.8 5.02 <0.13 <0.33 <0.33 <0.98 <0.33 <0.20 305
MW-B-T2 @ 15 ft 2/20/2025 Result 0 0.351 <0.01 <0.03 <0.03 <0.10 <0.03 <0.02 <70
MW-B-T3 @ 5ft 2/13/2025 Result 21.3 329 <0.13 <0.32 1.00 12.1 20 <0.19 5,100
B-T4 @ 4ft 2/20/2025 Result 0 <0.273 <0.01 <0.03 <0.03 <0.08 <0.03 <0.02 <58
B-T5 @ 7ft 2/20/2025 Result 0 <3.10 <0.12 <0.31 <0.31 <0.93 <0.31 <0.19 <62
B-T6 @ 8ft 2/20/2025 Result 29 62.8 <0.13 <0.32 0.51 4.66 9.09 <0.19 2,020
B-T6 @ 10ft 2/20/2025 Result 6 <0.314 <0.01 <0.03 <0.03 <0.09 0.03 <0.02 <65
B-T7 @ 9ft 4/10/2025 Result 18 3.32 <0.003 <0.005 <0.003 <0.009 0.01 <0.007 121
B-T8 @ 4.5ft 2/21/2025 Result 0 <2.66 <0.11 <0.27 <0.27 <0.80 <0.27 <0.16 <53
B-T9 @ 7ft 4/10/2025 Result 37.5 14.2 <0.003 <0.005 <0.003 <0.009 <0.006 <0.006 530
B-T10 @ 10ft 4/10/2025 Result 30.6 9.62 <0.004 <0.005 0.02 <0.01 0.87 <0.008 752
B-T11 @ 6ft 4/10/2025 Result 0.9 <0.0301 <0.0008 <0.001 <0.0007 <0.002 <0.002 <0.002 <10
B-T12 @ 5ft 4/10/2025 Result 0.3 0.0283 <0.0008 <0.001 <0.0007 <0.002 <0.002 <0.002 <10
B-T13 @ 5ft 4/10/2025 Result 0.5 <0.0306 <0.0009 <0.003 <0.0007 <0.002 <0.002 <0.002 <11
MW-T1 @ 4.5 ft 2/14/2025 Result 0.8 <2.72 <0.11 <0.27 <0.27 <0.82 <0.27 <0.16J-LOW-L <54
MW-T2 @ 6 ft 2/13/2025 Result 0.8 85.6 <0.12 <0.31 <0.31 <0.92 <0.31 <0.18 1,250
MW-T3 @ 3.5 ft 2/13/2025 Result 0 <2.79 <0.11 <0.28 <0.28 <0.84 <0.28 <0.17 <56
MW-T4 @ 8 ft 2/14/2025 Result 175.6 218 0.4 0.28 1.37 5.44 6.78 <0.17 5410
MW-T5 @ 9 ft 2/14/2025 Result 219.8 136 <0.12 1.08 0.8 6.41 <0.30 <0.18 389
MW-T6 @ 9 ft 2/20/2025 Result 65.4 98.1 <0.11 <0.28 <0.28 <0.85 <0.28 <0.17 5940
MW-T6 @ 15 ft 2/20/2025 Result 5.7 2.87 <0.01 <0.03 <0.03 <0.08 <0.03 <0.02 713
MW-T6 @ 20 ft 2/20/2025 Result 1.5 9.41 <0.11 <0.28 <0.28 <0.84 <0.28 <0.17 765
MW-T7 @ 5 ft 2/20/2025 Result NA 0.501 <0.01 <0.03 <0.03 <0.09 <0.03 <0.02 715
MW-T8 @ 8 ft 4/10/2025 Result 11.4 0.624 <0.001 <0.002 <0.001 <0.004 <0.003 <0.003 <10
MW-T9 @ 3 ft 4/10/2025 Result 0.2 <0.0301 <0.0008 <0.001 <0.0007 <0.002 <0.002 <0.002 <10
Table 2
Summary of Soil Analytical Results
Compass Minerals
765 North 10500 West, Ogden, Uaht 84404
Tetra Tech Project No. 117-115476-25011
Facility ID 1200071, Release ID OMG
NA = Not Available
Notes
Client Sample ID Date Collected
Utah Initial Screening Level (ISL)
Utah RBCA Tier 1 Screening Level
PID = Photoionization Detector
Results in bold are above laboratory detection levels
< = Below laboratory detection levels
mg/kg = milligram/kilogram
ppm = parts per million
J-LOW-L = Estimated Low Due to Low Recoverly of LCS
Method 8260B/5030A 8260D/5030B 8260D/5030B 8260D/5030B 8260D/5030B 8260D/5030B 8260D/5030B 8015
Analyte
GASOLINE
RANGE
ORGANICS
BENZENE TOLUENE ETHYLBENZENE XYLENES,
TOTAL NAPHTHALENE
METHYL TERT-
BUTYL ETHER
(MTBE)
DIESEL
RANGE
ORGANICS
Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L
1 0.005 1 0.7 10 0.7 0.2 1
10 0.3 3 4 10 0.7 0.2 10
-0.0158 20.5 0.0432 0.461 0.0762 4.09 -
MW-T1 4/9/2025 Result 0.022 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
MW-T1 2/14/2025 Result <0.125 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <1.0
MW-T2 4/9/2025 Result 0.428 0.393 0.002 0.004 <0.002 0.004 <0.001 2.0
MW-T2 2/17/2025 Result 0.38 0.234 <0.012 <0.012 <0.038 <0.012 <0.008 1.7
MW-T3 4/9/2025 Result 0.0234 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
MW-T3 2/17/2025 Result <0.125 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <1.0
MW-T4 2/14/2025 Result 4.98 0.497 0.348 0.137 0.791 0.039 <0.008 79.5
MW-T5 2/14/2025 Result 4.33 0.191 0.648 0.124 0.875 0.027 <0.008 156
MW-T6 4/9/2025 Result 0.646 <0.003 <0.004 <0.002 <0.008 <0.006 <0.006 17.8
MW-T6 2/21/2025 Result 1.17 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 13.4
MW-T7 4/9/2025 Result 0.0235 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
MW-T7 2/21/2025 Result <0.125 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <1.0
MW-T8 4/11/2025 Result 0.0264 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
MW-T9 4/11/2025 Result <0.02 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
MW-B-T1 4/9/2025 Result 0.49 <0.003 <0.004 <0.002 <0.008 0.011 <0.006 4.1
MW-B-T1 2/21/2025 Result 0.96 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 2
MW-B-T2 2/13/2025 Result 3.36 0.065 0.371 0.086 0.624 0.021 <0.008 31
MW-B-T3 4/14/2025 Result 0.166 0.08 0.003 0.005 0.045 0.032 <0.008 3.8
MW-B-T3 2/13/2025 Result 0.244 0.088 <0.005 <0.003 0.045 0.032 <0.008 3.8
B-T4 2/20/2025 Result <0.125 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <1.0
B-T5 2/20/2025 Result 0.133 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 <1.0
B-T6 2/20/2025 Result 7.51 0.028 <0.012 0.09 0.604 0.709 <0.008 903
B-T7 4/10/2025 Result 0.829 <0.003 <0.004 <0.002 <0.008 <0.006 <0.006 8
B-T8 2/21/2025 Result <0.125 <0.005 <0.012 <0.012 <0.038 <0.012 <0.008 4.5
B-T9 4/10/2025 Result 0.999 <0.003 <0.004 <0.002 <0.008 <0.006 <0.006 10
B-T10 4/10/2025 Result 5.14 0.196 0.066 0.047 <0.008 0.784 <0.006 1570
B-T11 4/10/2025 Result 0.0278 <0.0006 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
B-T12 4/10/2025 Result 0.0214 0.001 <0.0008 <0.0005 <0.002 <0.001 <0.001 <0.2
B-T13 4/10/2025 Result 0.0738 0.039 0.009 <0.0005 <0.002 0.002 <0.001 <0.2
Facility ID 1200071, Release ID OMG
Table 3
Summary of Groundwater Analytical Results
Compass Minerals
765 North 10500 West, Ogden, Utah 84404
Tetra Tech Project No. 117-115476-25011
Client
Sample ID
Date
Collected
Utah Initial Screening Level (ISL)
Utah RBCA Tier 1 Screening Level
Results in bold are above laboratory detection levels
The name of the wells B-T1, B-T2, B-T3 were updated to MW-B-T1, MW-B-T2, MW-B-T3 by clients request
EPA VISL Target Groundwater
Concentration
VISL = EPA Industrial Vapor Intrusion Screening Level
Notes
< = Below laboratory detection levels
mg/L = milligram/liter

Appendix A
Property and Well Radius Search Information

Environmental Site Assessment
Waste Oil Tank Removal Site
Page 8
Operations
I
I
Vehicle Maintenance
75" NORTH 225"
J
oo
oct
Fonmer Waste Oil
UST Site
Storage
Abmi -Cround Tonks d
^bow I ground Tanfci
TP-4
Figure 3-1 ~ Site Plan
CBC Enviro 1989 Report
I
I
1--
1··
I
I
I
I
I
I
I
I
I (208} • [348] (16.4) S [38]
[P
� DIESEL
-:.& AST c::::J TPl 1 (1.250) S \ [15.8/ . TPlO .----11.4001 1/567/
MINOR CANAL TP9 (<1.0) •
[<5/7 APPROXIJIAJE UNIT OF 00/fNCRAOIENT JPH ANO Oil ANO Cll£ASE NICRATJON Ji7lON F'{JElfNC Afl£A
LEGEND
c;
FUELING AREA
ASTs Test Pit, with soil (TPH) and [ Oil and Grease] concentrations in ppm Note: TP 1 through TP4 previously installed and analyzed Test Pit completed as groundwater monitoring well with soil (TPH) and [ Oil and Grease] concentrations in ppm Underground utility lines: -G-Gas, -T-Telephone,0
APPROXIMATE SCALE (FT.)
50 100 200
FIGURE 4: SOIL CHEMISTRY -MAP: TPH AND OIL-AND-GREASE
WGJ 1098-1
Wastach Geotechnical 1992 report
State of Utah
Compass Mineral
Western Basin Land and Livestock
Westinghouse Electric Co.USAWeber County
Site Location
Water Right Owner Apprx Distance (ft)Use
35-1201 Compass Mineral 3069.7
Stockwater/irrigation/flushing/processing/dom
estic/habitat impoundment
35-5373 Compass Mineral
3763
4724.9
7642.1 Flushing/extraction
35-2730 Compass Mineral 3742.4
Stockwater/irrigation/flushing/processing/dom
estic/habitat impoundment
35-398 Western Basin Land & Livestock LLC 4250.8 Stockwater
Well Radius Search

Appendix B
Compass Minerals Release Photolog
Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 1 of 5 PHOTO LOG

Number: 1 Date: December 2024
Description: Aerial view of mobile equipment area.

Number: 2 Date: December 2024
Description: Stormwater ditch looking north.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 2 of 5 PHOTO LOG

Number: 3 Date: December 2024
Description: Stormwater ditch looking south.
Number: 4 Date: December 2024
Description: Test hole to collect diesel.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 3 of 5 PHOTO LOG

Number: 5 Date: December 2024
Description: Tote used for collecting water/diesel from test hole.
Number: 6 Date: December 2024
Description: Diesel storage tanks.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 4 of 5 PHOTO LOG

Number: 7 Date: December 2024
Description: South pumping station.
Number: 8 Date: December 2024
Description: North pumping station.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 5 of 5 PHOTO LOG

Number: 9 Date: December 2024
Description: Sump for piping going to fuel stations.
Number: 10 Date: December 2024
Description: Inside view of sump for piping going to fuel stations.

Appendix C
Compass Minerals Free Product Recovery Trench
and Outfall Sampling Laboratory Reports
DieselProductCollection
andSeparationDiagram
InterceptionTrench
Oil-WaterSeparator
Carbon (GAC)
Filtration Unit
Collected DieselHaul-Off
Treated water
back to low area
Separated Water
Diesel Collection and Separation Process Diagram
E.T. Technologies, 2025
8 7 6 5 4 3 2 1
D
C
B
A
12345678
A
B
C
D
SHEET OF
DRAWN BY
CHECKED BY
ENGINEER
DWG NO
TITLE
SIZE
SCALE
REV
765 NORTH 10500
WEST, OGDEN UT
84404
PH [phone]
FX [phone]
DATE
DATE
DATE
THIS DRAWING IS THE PROPERTY OF
COMPASS MINERALS INTERNATIONAL, INC.
MAY NOT BE COPIED OR DISTRIBUTED
WITHOUT WRITTEN PERMISSION FROM
COMPASS MINERALS.
D
M I N E R A L S
EQUIPMENT#
DIESEL LEAK REMEDIATION
4925041-C-001
JDW 4/25/2025
0
11 C:
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S
\
W
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K
M
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J
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T
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P
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4
9
2
5
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L
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A
K

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M
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D
I
A
T
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N
.
D
W
G
1'-8.0000"
2'-6"
3'-5"
WATER TABLE
1'
GRAVEL FILL
1'
GRAVEL FILL
8"
PERFERATED PIPE
12"
1/4"
1'-5"
DIESEL TABLE
GEOTEXTILE
GEOTEXTILE
PUMP TO
STORAGE TOTE
3'-4"
WIDE TRENCH
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25C1441
Project: Diesel Incident Near Moblie
3/27/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/19/25 14:10 @ 6.3 °C
3/27/2025
Diesel Incident Near Moblie
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25C1441-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 3/19/25 11:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 3/21/253/21/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Moblie CtF WO#: 25C1441
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/19/25 14:10 @ 6.3 °C
3/27/2025
Diesel Incident Near Moblie
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.
Project Name: Diesel Incident Near Moblie CtF WO#: 25C1441
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25B1624
Project: Diesel Incident Near Mobile
3/3/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/21/25 12:35 @ 11.1 °C
3/3/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25B1624-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/18/25 13:30
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25B1624
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/21/25 12:35 @ 11.1 °C
3/3/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25B1624
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25B2082
Project: Diesel Incident Near Mobile
3/10/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/28/25 12:50 @ 13.2 °C
3/10/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25B2082-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/26/25 11:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 3/5/253/5/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25B2082
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/28/25 12:50 @ 13.2 °C
3/10/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25B2082
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25C0875
Project: Diesel Incident Near Mobile
3/19/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/12/25 14:25 @ 10.7 °C
3/19/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25C0875-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 3/12/25 10:05
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 3/14/253/14/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25C0875
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/12/25 14:25 @ 10.7 °C
3/19/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25C0875
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25B0927
Project: Diesel Incident Near Mobile
2/20/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/12/25 14:10 @ 13.1 °C
2/20/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25B0927-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/12/25 11:00
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 2/13/252/13/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25B0927
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/12/25 14:10 @ 13.1 °C
2/20/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25B0927
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25A1823
Project: Diesel Incident Near Mobile
2/4/2025
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 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/27/25 13:00 @ 3.1 °C
2/4/2025
Diesel Incident Near Mobile
Sample ID: #1 Ditch Near Mobile
Lab ID: 25A1823-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/27/25 11:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/31/251/31/251.0 EPA 8015 C5.0Diesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1823
www.ChemtechFord.com
Page 2 of 5Page 2 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/27/25 13:00 @ 3.1 °C
2/4/2025
Diesel Incident Near Mobile
Sample ID: #2 Effluent Ditch (Near 5 Points)
Lab ID: 25A1823-02Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/27/25 11:10
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/31/251/31/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1823
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/27/25 13:00 @ 3.1 °C
2/4/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1823
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
Page 5 of 5
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25A2225
Project: Diesel Incident Near Mobile
2/10/2025
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 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/31/25 13:13 @ 8.5 °C
2/10/2025
Diesel Incident Near Mobile
Sample ID: #1 Ditch Near Mobile
Lab ID: 25A2225-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/31/25 11:00
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 2/4/252/3/251.0 EPA 8015 C3.4Diesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A2225
www.ChemtechFord.com
Page 2 of 5Page 2 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/31/25 13:13 @ 8.5 °C
2/10/2025
Diesel Incident Near Mobile
Sample ID: #2 Effluent Ditch (Near 5 Points)
Lab ID: 25A2225-02Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/31/25 10:55
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 2/4/252/3/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A2225
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/31/25 13:13 @ 8.5 °C
2/10/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25A2225
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
Page 5 of 5
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25B0346
Project: Diesel Incident Near Mobile
2/12/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/5/25 14:55 @ 13.2 °C
2/12/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25B0346-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/5/25 11:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 2/10/252/7/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25B0346
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
2/5/25 14:55 @ 13.2 °C
2/12/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25B0346
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25C1934
Project: Diesel Incident Near Mobile
4/2/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/26/25 14:14 @ 10.5 °C
4/2/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near 5 Points)
Lab ID: 25C1934-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 3/26/25 10:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 3/31/253/28/251.0 EPA 8015 C1.2Diesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25C1934
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
3/26/25 14:14 @ 10.5 °C
4/2/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25C1934
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25A1318
Project: Diesel Incident Near Mobile
1/28/2025
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 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/17/25 13:30 @ 12.1 °C
1/28/2025
Diesel Incident Near Mobile
Sample ID: #1 Ditch Near Mobile
Lab ID: 25A1318-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/17/25 11:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/24/251/24/251.0 EPA 8015 C2.3Diesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1318
www.ChemtechFord.com
Page 2 of 5Page 2 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/17/25 13:30 @ 12.1 °C
1/28/2025
Diesel Incident Near Mobile
Sample ID: #2 Effluent Ditch (Near 5 Points)
Lab ID: 25A1318-02Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/17/25 11:10
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/24/251/24/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1318
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/17/25 13:30 @ 12.1 °C
1/28/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25A1318
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
Page 5 of 5
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25D0225
Project: Diesel Incident near mobile
4/9/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/2/25 14:25 @ 13.2 °C
4/9/2025
Diesel Incident near mobile
Sample ID: Effluent Ditch (Near Mobile Mountain)
Lab ID: 25D0225-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/2/25 10:15
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 4/3/254/3/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident near mobile CtF WO#: 25D0225
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/2/25 14:25 @ 13.2 °C
4/9/2025
Diesel Incident near mobile
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.
Project Name: Diesel Incident near mobile CtF WO#: 25D0225
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25D0804
Project: Diesel Incident Near Mobile
4/22/2025
Amended
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 5
Compass Minerals
765 North 10500 West
Ogden, UT 84404
Project: Diesel Incident Near Mobile
Project Manager: Curtis Thomas
Laboratory ID Sample Name
25D0804-01 Effluent Ditch (Near Mobile Mountain)
Amended Report Narrative

Report Changes:
DRO was reanalyzed and reported as ND.
www.ChemtechFord.com
Project Name: Diesel Incident Near Mobile CtF WO#: 25D0804
Page 2 of 5
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
Amended Amended
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/9/25 14:14 @ 8.8 °C
4/22/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near Mobile Mountain)
Lab ID: 25D0804-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 10:45
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 4/10/254/10/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25D0804
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Amended Amended
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/9/25 14:14 @ 8.8 °C
4/22/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25D0804
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
Page 5 of 5
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25D0804
Project: Diesel Incident Near Mobile
4/15/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/9/25 14:14 @ 8.8 °C
4/15/2025
Diesel Incident Near Mobile
Sample ID: Effluent Ditch (Near Mobile Mountain)
Lab ID: 25D0804-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 10:45
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 4/10/254/10/251.0 EPA 8015 C1.2Diesel Range Organics
Project Name: Diesel Incident Near Mobile CtF WO#: 25D0804
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/9/25 14:14 @ 8.8 °C
4/15/2025
Diesel Incident Near Mobile
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.
Project Name: Diesel Incident Near Mobile CtF WO#: 25D0804
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 24L1894
Project: Diesel Incident by Mobile
1/6/2025
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 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
12/27/24 13:05 @ 1.7 °C
1/6/2025
Diesel Incident by Mobile
Sample ID: Outfall 001A
Lab ID: 24L1894-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/26/24 11:20
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 12/30/2412/30/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident by Mobile CtF WO#: 24L1894
www.ChemtechFord.com
Page 2 of 5Page 2 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
12/27/24 13:05 @ 1.7 °C
1/6/2025
Diesel Incident by Mobile
Sample ID: Outfall 001A
Lab ID: 24L1894-02Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 12/27/24 10:20
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 12/30/2412/30/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident by Mobile CtF WO#: 24L1894
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
12/27/24 13:05 @ 1.7 °C
1/6/2025
Diesel Incident by Mobile
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.
Project Name: Diesel Incident by Mobile CtF WO#: 24L1894
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
Page 5 of 5
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25A0139
Project: Diesel Spill Near Mobile
1/13/2025
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 7
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/3/25 14:30 @ 7.5 °C
1/13/2025
Diesel Spill Near Mobile
Sample ID: #1 Ditch near mobile
Lab ID: 25A0139-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/2/25 13:00
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/6/251/6/251.0 EPA 8015 C99.8Diesel Range Organics
Project Name: Diesel Spill Near Mobile CtF WO#: 25A0139
www.ChemtechFord.com
Page 2 of 7Page 2 of 7
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/3/25 14:30 @ 7.5 °C
1/13/2025
Diesel Spill Near Mobile
Sample ID: #2 Effluent ditch (Near 5 points)
Lab ID: 25A0139-02Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/2/25 13:10
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/6/251/6/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Spill Near Mobile CtF WO#: 25A0139
www.ChemtechFord.com
Page 3 of 7Page 3 of 7
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/3/25 14:30 @ 7.5 °C
1/13/2025
Diesel Spill Near Mobile
Sample ID: #1 Ditch near mobile
Lab ID: 25A0139-03Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/3/25 8:30
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/6/251/6/251.0 EPA 8015 C90.6Diesel Range Organics
Project Name: Diesel Spill Near Mobile CtF WO#: 25A0139
www.ChemtechFord.com
Page 4 of 7Page 4 of 7
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/3/25 14:30 @ 7.5 °C
1/13/2025
Diesel Spill Near Mobile
Sample ID: #2 Outfall 001A (Near 5 points)
Lab ID: 25A0139-04Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 1/3/25 8:37
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 1/6/251/6/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Spill Near Mobile CtF WO#: 25A0139
www.ChemtechFord.com
Page 5 of 7Page 5 of 7
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
1/3/25 14:30 @ 7.5 °C
1/13/2025
Diesel Spill Near Mobile
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.
Project Name: Diesel Spill Near Mobile CtF WO#: 25A0139
www.ChemtechFord.com
Page 6 of 7Page 6 of 7
Page 7 of 7
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25D1357
Project: Diesel Incident near mobile
4/23/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/16/25 14:14 @ 10.1 °C
4/23/2025
Diesel Incident near mobile
Sample ID: Effluent Ditch (Near Mobile Mountain)
Lab ID: 25D1357-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/15/25 8:30
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
Diesel Range
mg/L 4/21/254/21/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Diesel Incident near mobile CtF WO#: 25D1357
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
4/16/25 14:14 @ 10.1 °C
4/23/2025
Diesel Incident near mobile
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.
Project Name: Diesel Incident near mobile CtF WO#: 25D1357
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4

Appendix D
Soil Boring Logs

Compass Minerals 2025
117-115476-25011
B-T7
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:15'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28159, -112.2333
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
15
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
5.0
9.0
11.0
13.0
15.0
FILL, very loose, dark brown, angular, GRAVELLY SAND with
SILT (SW-SM)
Loose, wet to saturated, angular, WELL-GRADED SAND with
SILT (SW-SM), stained black
Loose, light grey, saturated, subrounded, WELL-GRADED SAND
(SW)
Medium dense, saturated, POORLY GRADED SAND with SILT
(SP-SM), Light Green
Firm to soft, light brown, high plasticity, wet, FAT CLAY (CH)
Boring terminated at 15'
PI
D

(
P
P
M
)
0
0.1
0.1
0.1
0.2
1.8
0.7
0.7
18
6.8
3.8
3.5
0.7
0.5
0.8
Sa
m
p
l
e

N
u
m
b
e
r
B-T7-9'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T10
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28238, -112.23279
Water Level at Time of Drilling 6'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.0
6.0
7.5
8.5
10.0
FILL, loose, dark brown, dry, angular, GRAVELLY SAND with
SILT (SW-SM)
Light brown, moist, subangular, POORLY GRADED SAND with
SILT (SP-SM)
Black, wet, subangular, POORLY GRADED SAND with SILT
(SP-SM), stained
Firm, blue-grey, low plasticity, wet, SILT with SAND (ML)
Firm to soft, light brown, high plasticity, wet, FAT CLAY (CH)
Boring terminated at 10'
PI
D

(
P
P
M
)
0.6
0.3
0.3
0.7
2.5
1
6.5
17
30.6
4
Sa
m
p
l
e

N
u
m
b
e
r
B-T10-9'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T12
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28317, -112.23305
Water Level at Time of Drilling 5.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.0
4.5
5.5
6.5
10.0
FILL, loose, dry, angular, SANDY GRAVEL with SILT (GW)
Shale, black
Dense, light brown, medium plasticity, moist, SILTY CLAYEY
with SAND (SC-SM)
Grey, non plastic, wet, subangular to rounded, WELL-GRADED
SAND with SILT (SW-SM)
Dense, light brown, high plasticity, moist, LEAN CLAY (CL)
Boring terminated at 10'
PI
D

(
P
P
M
)
0.1
0.1
0.2
0.3
0.3
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T12-5'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T13
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28271, -112.23313
Water Level at Time of Drilling 4.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.0
3.0
3.5
5.5
7.5
9.0
10.0
FILL, loose, dark brown, dry, angular, GRAVELLY SAND (SW)
Soft, dark brown, moist, SANDY SILT (ML)
Shale, black
Light brown, very moist to wet, POORLY GRADED SAND (SP)
Loose to dense, light brown, wet, subrounded, WELL-GRADED
SAND (SW)
Blue-grey, subrounded, WELL-GRADED SAND with SILT (SW)
Firm to stiff, light brown, moist, LEAN CLAY (CL)
Boring terminated at 10'
PI
D

(
P
P
M
)
0.3
0.4
0.6
0.5
0.5
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T13-5'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T11
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28285, -112.23268
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.0
5.0
7.0
10.0
FILL, loose, dry, angular, GRAVELLY SAND (SW)
Soft, moist, POORLY GRADED SAND with SILT (SP-SM), Redish Brown
Contains wood pieces at 4'
Soft, reddish brown, wet to saturated, POORLY GRADED SAND with SILT
(SP-SM)
Light brown, wet to saturated, SANDY SILT (ML)
Boring terminated at 10'
PI
D

(
P
P
M
)
0.4
0.4
0.3
0.2
0.9
0.9
0.8
0.8
0.6
0.6
Sa
m
p
l
e

N
u
m
b
e
r
B-T11-6'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T9
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:N/A
Remarks:
Method:Direct Push Coordinates: 41.28146, -112.2325
Water Level at Time of Drilling 4'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.0
4.0
7.5
9.0
10.0
FILL, loose, dark brown, dry, angular, WELL-GRADED GRAVEL
with SILT (GW-GM)
Loose, dark brown, moist, angular to subangular,
WELL-GRADED SAND (SW)
Loose to dense, black, wet to saturated, angular to
subangular, WELL-GRADED SAND (SW), stained black
Loose to dense, blue-grey, saturated, subangular,
WELL-GRADED SAND (SW)
Loose to dense, olive, saturated, subrounded, WELL-GRADED
SAND with SILT (SW-SM)
Boring terminated at 10'
PI
D

(
P
P
M
)
0.5
0.7
0.7
0.6
0.6
0.6
37.5
1.8
0.7
0.6
Sa
m
p
l
e

N
u
m
b
e
r
B-T9-7'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T6
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/20/2025
Date Completed:02/20/2025
Boring Depth:10'
Boring Elevation:4170.1'
Remarks:
Method:Direct Push Coordinates: 41.28249, -112.2327
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.5
9.0
10.0
FILL, loose, light brown, dry, subrounded, WELL-GRADED
SAND with GRAVEL (SW)
Blue-grey, low plasticity, wet to saturated, SILTY SAND with
CLAY (SM), stained
Light brown, low plasticity, wet to saturated, SILT with CLAY
(ML)
PI
D

(
P
P
M
)
3.8
6.7
11.4
11.4
7.9
12.6
7.2
29
29
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T6-8'
B-T6-10'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T8
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/21/2025
Date Completed:02/21/2025
Boring Depth:10'
Boring Elevation:4170.6'
Remarks:
Method:Direct Push Coordinates: 41.28198, -112.23304
Water Level at Time of Drilling 4.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.5
10.0
FILL, light brown, dry, subangular, WELL-GRADED SAND with
GRAVEL (SW), 40% recovery
Light brown, non plastic, SILT with SAND (ML), 10% recovery
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
00
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T8-4.5
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
B-T4
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/20/2025
Date Completed:02/20/2025
Boring Depth:10'
Boring Elevation:4168.1'
Remarks:
Method:Direct Push Coordinates: 41.2825, -112.23195
Water Level at Time of Drilling 4'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
3.0
8.0
10.0
FILL, light brown, dry, subangular, WELL-GRADED SAND with
GRAVEL (SW)
Light brown, non plastic, wet to saturated, subrounded, SILTY
SAND (SM)
Soft, blue-grey, low plasticity, wet to saturated, SILT (ML)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
0
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T4-4'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
B-T5
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Tonrey
Equipment:Geoprobe 7822DT
Date Started:02/20/2025
Date Completed:02/20/2025
Boring Depth:10'
Boring Elevation:4170.1'
Remarks:
Method:Direct Push Coordinates: 41.28291, -112.23241
Water Level at Time of Drilling 7'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
7.0
10.0
FILL, brown to grey, dry, subangular, WELL-GRADED SAND
with GRAVEL (SW)
wood pieces encountered at 5'
Light brown, non plastic, wet to saturated, subrounded, SILTY
SAND (SM)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
0
0
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T5-7'
Ba
c
k
f
i
l
l
Compass Minerals 2025
117-115476-25011
MW-T9
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:4167.23'
Remarks:
Method:Direct Push Coordinates: 41.28288, -112.23295
Water Level at Time of Drilling 3.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.5
3.5
8.0
9.0
10.0
FILL, dark grey, dry, angular, GRAVELLY SAND with SILT (SW)
Dark brown, non plastic, moist, SILT with GRAVEL (ML)
Soft to firm, light brown, low plasticity, wet, SANDY SILT with
CLAY (ML)
Soft to firm, blue-grey, high plasticity, FAT CLAY (CH)
Stiff, high plasticity, LEAN CLAY (CL), dark green
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0.2
0.2
0.2
0.1
0.1
0.1
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
MW-T9-3'
We
l
l
1.
8
7
5
0 1.
8
7
5
Backfilled with Bentonite Chips
on 04/10/2025
Backfilled with Silica Sand on
04/10/2025
Compass Minerals 2025
117-115476-25011
MW-T8
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Kaden Delahoyde
Logged By:Richie Toreny
Equipment:Geoprobe 7822DT
Date Started:04/10/2025
Date Completed:04/10/2025
Boring Depth:10'
Boring Elevation:4167.86'
Remarks:
Method:Direct Push Coordinates: 41.28147, -112.23307
Water Level at Time of Drilling 4'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
5.0
7.0
8.5
9.0
10.0
FILL, loose, dark brown, dry to moist, GRAVELLY SAND with
SILT (SW)
Loose, brown to grey, wet, WELL-GRADED SAND (SW)
Loose, black, wet, WELL-GRADED SAND (SW), stained
Loose, brown to grey, wet, WELL-GRADED SAND (SW)
Soft to firm, light brown, moist, SILTY LEAN CLAY (CL), trace
gravel
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
0.2
0.3
0.3
0.7
11.4
1.7
1.2
Sa
m
p
l
e

N
u
m
b
e
r
MW-T8-8'
We
l
l
1.
8
7
5
0 1.
8
7
5
Backfilled with Bentonite Chips
on 04/10/2025
Backfilled with Silica Sand on
04/10/2025
Compass Minerals 2025
117-115476-25011
MW-T1
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/14/2025
Date Completed:02/14/2025
Boring Depth:10'
Boring Elevation:4171.18'
Remarks:
Method:Direct Push Coordinates: 41.2814, -112.23223
Water Level at Time of Drilling 4.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
3.0
6.0
8.5
10.0
FILL, loose, light brown, moist, subangular, POORLY GRADED
SAND with GRAVEL (SP)
Grey, wet to saturated, subangular to subrounded,
WELL-GRADED SAND with SILT (SW)
Dark grey, saturated, subangular to subrounded, POORLY
GRADED SAND (SP)
Soft, grey, non plastic, saturated, subangular to subrounded,
SANDY SILT (ML)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
00
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
MW-T1-4.5
We
l
l
1.
8
7
5
0 1.
8
7
5
2"SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC screen.
Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
MW-T2
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/13/2025
Date Completed:02/13/2025
Boring Depth:10'
Boring Elevation:4169'
Remarks:
Method:Direct Push Coordinates: 41.28209, -112.23255
Water Level at Time of Drilling 4.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
1.0
4.5
7.5
9.0
10.0
FILL, gravel
FILL, light brown, dry, angular to subangular, WELL-GRADED
SAND with SILT (SW)
Dark brown, moist to wet, subrounded, SILTY SAND with
GRAVEL (SW), hydrocarbon odor
Black, wet, POORLY GRADED SAND with SILT (SP), has a
hydrocarbon odor, stained black
Blue-grey, low plasticity, saturated, SILTY SAND with CLAY (SP)
PI
D

(
P
P
M
)
0
0
0
00
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
MW-T2-4.5'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
MW-T4
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/14/2025
Date Completed:02/14/2025
Boring Depth:10'
Boring Elevation:4170.68'
Remarks:
Method:Direct Push Coordinates: 41.28181, -112.23225
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
3.5
5.0
7.0
9.0
10.0
FILL, loose, brownish red, dry, subangular, WELL-GRADED
SAND with GRAVEL (SW), stained black, hydrocarbon odor
bottomed with white crystal like layer
Blue-grey, moist to wet, subrounded, WELL-GRADED SAND with
SILT (SW-SM), stained black with hydrocarbon odor
Dark brown, wet to saturated, subangular, WELL-GRADED SAND
with GRAVEL (SW), stained black with hydrocarbon odor
Soft, blue-grey, medium plasticity, saturated, SILTY CLAY with
SAND (CL-ML), stained red, hydrocarbon odor
Blue-grey, low plasticity, saturated, SILTY SAND with CLAY
(SP-SM), hyrocarbon odor
Boring terminated at 10'
PI
D

(
P
P
M
)
0.1
0.2
56.4
20.8
115.5
18
138.2
175.6
175.6
76.3
5.7
Sa
m
p
l
e

N
u
m
b
e
r
MW-T4-8'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
MW-T5
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/14/2025
Date Completed:02/14/2025
Boring Depth:10'
Boring Elevation:4168.14'
Remarks:
Method:Direct Push Coordinates: 41.28218, -112.23221
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
3.0
5.0
9.0
10.0
FILL, light brown, dry, subangular, WELL-GRADED SAND with
SILT (SW-SM), contains gravel
Firm, reddish brown, moist to wet, angular, WELL-GRADED SAND
with SILT (SW-SM), stained black, hydrocarbon odor
Dark grey, saturated, POORLY GRADED SAND with SILT (SP-SM),
stained red, sheen, hydrocarbon odor
Light brown, saturated, subrounded, POORLY GRADED SAND
with SILT (SP-SM), hydrocarbon odor
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0.1
0.5
0.1
21.3
39.8
34.5
52.3
219.8
84.2
Sa
m
p
l
e

N
u
m
b
e
r
MW-T5-9'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" sch 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
MW-T6
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/20/2025
Date Completed:02/20/2025
Boring Depth:20'
Boring Elevation:4169.84'
Remarks:
Method:Direct Push Coordinates: 41.28165, -112.23257
Water Level at Time of Drilling N/A

De
p
t
h

(
f
t
)
5
10
15
20
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.0
9.0
20.0
FILL, light brown, WELL-GRADED SAND with SILT (SW), Topped
with gravel fill
Dark grey, saturated, WELL-GRADED SAND with SILT (SW-SM),
stained black, hydrocarbon odor
Loose, dark grey, saturated, subrounded, POORLY GRADED SAND
(SP), Poor Recovery due to falling out/formation loss
PI
D

(
P
P
M
)
0
0.8
0.2
10.4
1.5
0.5
0.5
0.5
65.4
0.1
5.7
0.7
1.5
Sa
m
p
l
e

N
u
m
b
e
r
MW-T6-9'
MW-T6-15'
MW-T6-20'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Backfilled with Bentonite Chips
on 02/20/2025
Compass Minerals 2025
117-115476-25011
MW-T7
Page 1 of 1
Drilling Co.:DIrect Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/20/2025
Date Completed:02/20/2025
Boring Depth:10'
Boring Elevation:4171.64'
Remarks:
Method:Direct Push Coordinates: 41.28165, -112.23167
Water Level at Time of Drilling 5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
4.0
8.0
10.0
FILL, light brown, dry to moist, subangular to subrounded,
SILTY SAND with GRAVEL (SM), Topped by asphalt
Loose, dark brown, very moist to saturated, subangular,
WELL-GRADED SAND with SILT (SW)
Light brown, low plasticity, saturated, SILTY SAND with CLAY
(SM)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
0
0
0
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
MW-T7-5'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand
Compass Minerals 2025
117-115476-25011
MW-B-T2
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/13/2025
Date Completed:02/20/2025
Boring Depth:15'
Boring Elevation:4171.63'
Remarks:
Initial boring completed 2/13/2025. Well installed
2/20/2025.
Method:Direct Push Coordinates: 41.28196, -112.23194
Water Level at Time of Drilling 2.5'

De
p
t
h

(
f
t
)
5
10
15
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
3.0
6.0
9.0
10.0
14.0
15.0
FILL, light brown, moist to wet, subangular, GRAVELLY SAND
(SW)
Light brown, wet, subangular, WELL-GRADED SAND (SW),
hydrocarbon odor
Subrounded, WELL-GRADED SAND with SILT (SW), Stained
Black
Grey, low plasticity, wet, SANDY SILT with CLAY (ML)
Brown, wet, subangular, WELL-GRADED SAND with GRAVEL
(SW)
Yellowish brown, non plastic, wet, SILT (ML)
Boring terminated at 15'
PI
D

(
P
P
M
)
1.1
1.1
12.7
12.7
59.7
92.8
92.8
27.8
27.8
2
0.1
5.8
5.8
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T2-7'
B-T2-10'
B-T2-15'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC Well, Backfilled
with Bentonite Chips.
2" SLottled SCH 40 PVC Screen.
Backfilled with Silica Sand
Backfilled with Bentonite Chips
Compass Minerals 2025
117-115476-25011
MW-B-T1
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/13/2025
Date Completed:02/20/2025
Boring Depth:15'
Boring Elevation:4171.75'
Remarks:
Initial Boring completed 2/13/2025 and well installed
2/20/2025.
Method:Direct Push Coordinates: 41.28154, -112.2322
Water Level at Time of Drilling 3.5'

De
p
t
h

(
f
t
)
5
10
15
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
0.5
3.5
9.0
10.0
15.0
FILL, Gravel Fill
FILL, light brown, dry, subangular, WELL-GRADED SAND (SW)
POORLY GRADED SAND (SP), Stained Black
Soft, grey, non plastic, wet to saturated, SILT (ML)
Wet, WELL-GRADED SAND (SW), Greyish Green
Boring terminated at 15'
PI
D

(
P
P
M
)
0
0
0
0
17.9
17
22
26.7
26
26
0
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T1-8'
B-T1-10'
B-T1-15'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips.
2" SCH 40 PVC Slotted Screen.
Backfilled with #2 Sand.
Backfilled with Bentonite Chips
on 02/13/2025
Compass Minerals 2025
117-115476-25011
MW-B-T3
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/13/2025
Date Completed:02/14/2025
Boring Depth:10'
Boring Elevation:4166.87'
Remarks:
Original boring completed on 2/13/2025. Well installed
2/14/2025.
Method:Direct Push Coordinates: 41.28266, -112.2324
Water Level at Time of Drilling 2'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.0
6.0
10.0
FILL, light brown, moist to wet, subangular, WELL-GRADED
SAND (SW)
Black, non plastic, saturated, SILT with SAND (ML), stained
Yellowish brown, non plastic, saturated, SILT with SAND (ML)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
3.2
15.7
13.2
21.3
2.3
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
B-T3-5'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC Well. Backfilled
with Bentonite Chips.
2" SCH 40 Slottled PVC Screen.
Backfilled with Silica Sand.
Compass Minerals 2025
117-115476-25011
MW-T3
Page 1 of 1
Drilling Co.:Direct Push Services
Driller:Jaret Bromley
Logged By:Richie Torney
Equipment:Geoprobe 7822DT
Date Started:02/13/2025
Date Completed:02/13/2025
Boring Depth:10'
Boring Elevation:4169.44'
Remarks:
Method:Direct Push Coordinates: 41.28196, -112.23154
Water Level at Time of Drilling 3.5'

De
p
t
h

(
f
t
)
5
10
Gr
a
p
h
i
c

L
o
g
Visual Classification and Remarks
2.0
4.0
10.0
FILL, light brown, dry, subangular, WELL-GRADED SAND with
GRAVEL (SW)
Dark brown, saturated, WELL-GRADED SAND with SILT
(SW-SM)
Blue-grey, saturated, subrounded, SILTY SAND (SM)
Boring terminated at 10'
PI
D

(
P
P
M
)
0
0
00
0
0
0
0
0
0
Sa
m
p
l
e

N
u
m
b
e
r
MW-T3-3.5'
We
l
l
1.
8
7
5
0 1.
8
7
5
2" SCH 40 PVC well. Backfilled
with Bentonite Chips
2" SCH 40 slotted PVC well
screen. Backfilled with Silica Sand

Appendix E
Soil Boring Photo Log

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 1 of 14 PHOTO LOG

Number: 1 Date : February 13, 2025
Description: B-T1 Core from 0 to 10 feet.

Number: 2 Date : February 13, 2025
Description: MW-T2 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 2 of 14 PHOTO LOG

Number: 3 Date : February 13, 2025
Description: B-T2 core from 0 to 10 feet.
Number: 4 Date : February 13, 2025
Description: B-T3 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 3 of 14 PHOTO LOG

Number: 5 Date : February 13, 2025
Description: MW-T3 core from 0 to 10 feet.
Number: 6 Date : February 13, 2025
Description: View of the pond to the north of the fueling Island facing Noth to the French drain on the left side.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 4 of 14 PHOTO LOG

Number: 7 Date : February 14, 2025
Description: MW-T1 core from 0 to 10 feet.

Number: 8 Date : February 14, 2025
Description: MW-T4 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 5 of 14 PHOTO LOG

Number: 9 Date : February 14, 2025
Description: MW-T5 core from 0 to 10 feet.

Number: 10 Date : February 20, 2025
Description: B-T1 core from 10 to 15 feet (bottom).

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 6 of 14 PHOTO LOG

Number: 11 Date : February 20, 2025
Description: B-T2 core from 10 to 15 feet(bottom).
Number: 12 Date : February 20, 2025
Description: B-T4 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 7 of 14 PHOTO LOG

Number: 13 Date : February 20, 2025
Description: View of the unknown metal line detected by ground penetrating radar.
Number: 14 Date : February 20, 2025
Description: B-T5 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 8 of 14 PHOTO LOG

Number: 15 Date : February 20, 2025
Description: View of the drain line to the oil water separator neat B-T6.

Number: 16 Date : February 20, 2025
Description: B-T6 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 9 of 14 PHOTO LOG

Number: 17 Date : February 20, 2025
Description: MW-T6 core from 0 to 20 feet (top to bottom).

Number: 18 Date : February 20, 2025
Description: MW-T7 from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 10 of 14 PHOTO LOG

Number: 19 Date : February 21, 2025
Description: B-T8 core from 0 to 10 feet.
Number: 20 Date : April 10, 2025
Description: B-T7 core from 0 to 15 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 11 of 14 PHOTO LOG

Number: 21 Date : April 10, 2025
Description: B-T9 core from 0 to 10 feet.
Number: 22 Date : April 10, 2025
Description: MW-T8 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 12 of 14 PHOTO LOG

Number: 23 Date: April 10, 2025
Description: B-T10 core from 0 to 10 feet.
Number: 24 Date: April 10, 2025
Description: B-T11 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 13 of 14 PHOTO LOG

Number: 25 Date: April 10, 2025
Description: B-T12 core from 0 to 10 feet.
Number: 26 Date: April 10, 2025
Description: B-T13 core from 0 to 10 feet.

Compass Mineral 765 N 10500 W, Ogden, UT 84404

Page 14 of 14 PHOTO LOG

Number: 27 Date: April 10, 2025
Description: MW-T9 core from 0 to 10 feet.

Appendix F
Geologic Cross Sections

EL
E
V
A
T
I
O
N

(
f
e
e
t
)
4150
4155
4160
4165
4170
terminated
at15'
nonwet,SILT (ML)
terminated
at10'
terminated
at10'
terminated
at10'
,
n
ED
saturated,SILTY
SANDwith CLAY(SP-SM),hyrocarbonodor
SANDYSILT withCLAY (ML)
saturated,SILTY
CLAYwithSAND(CL-ML),stained
red,hydrocarbonodor
,
,ED
WELL-GRADEDSANDwithGRAVEL
(SW),stainedblack withhydrocarbonodor
ED
hydrocarbonodor
subrounded,WELL-GRADEDSANDwithSILT(SW-SM),stainedblack withhydrocarbonodor
ED
SILT(SW-SM)
ED
(SW), rbonodor
EDSANDwithGRAVEL
(SW)
FILL
ED
FILL
light
ED
y
ED
GRAVEL
(SW),stainedblack,hydrocarbonodor
(SW)
B-T8
Proj: 51 ft NW
Elev: 4170.6 ft
Elev: 4160.6 ft
Depth: 10.0 ft
MW-T6
Proj: 73 ft SE
Elev: 4169.8 ft
Elev: 4149.8 ft
Depth: 20.0 ft
MW-T4
Proj: 14 ft SE
Elev: 4170.7 ft
Elev: 4160.7 ft
Depth: 10.0 ft
MW-B-T2
Proj: 41 ft NW
Elev: 4171.6 ft
Elev: 4156.6 ft
Depth: 15.0 ft
MW-T3
Proj: 38 ft NW
Elev: 4169.4 ft
Elev: 4159.4 ft
Depth: 10.0 ft
B-T8-4.5
MW-T6-15'
MW-T6-20'
MW-T6-9'
MW-T4-8'
B-T2-15'
B-T2-10'
B-T2-7'
MW-T3-3.5'
0 50 100 150 200 250 300 350 400 450
STATIONING (feet)
SITE MAP Alignment: -
B-T5
B-T4
B-T8
B-T6
MW-B-T2
MW-B-T3
MW-T4
MW-T7MW-T6
MW-T1
MW-T2
MW-T3
MW-T5
MW-B-T1
LEGEND KEY
SW
ML
SW
SW-SM
SP
CL-ML
SP-SM
ML
SM
Compass Minerals 2025
Cross Section W-E
Tetra Tech | 4750 2100 S Suite 400 | Salt Lake City, UT | www.tetratech.com
SW
Native
ML
SW
SW-SM
Native
Stained
Black
Native
SP
Poor
Recovery
Fill
SW
Native
SW-SM
Stained
Black
Native
SW
Stained
Black
Native
CL-ML
Stained
Red
Native
SP-SM
FIll
SW
Native
SW
Native
SW
Stained
Black
Native
ML
Native
SW
Native
ML
Native
SW-SM
Native
SM
Stained
Black
FIll
SW
DTW at time of drilling
DTW after drilling
DTW at time of drilling
DTW at time of drilling
DTW at time of drilling
DTW at time of drilling
DTW after drilling
EL
E
V
A
T
I
O
N

(
f
e
e
t
)
4155
4160
4165
4170
SM
SM
SW
MW-T7
Proj: 0 ft SW
Elev: 4171.6 ft
Depth: 10.0 ft
Date: 02/20/2025
SW
SW
SW
SW
ML
ML
MW-B-T2
Proj: 15 ft NE
Elev: 4171.6 ft
Depth: 15.0 ft
Date: 02/13/2025
SW-SM
SP-SM
SP-SM
SW-SM
MW-T5
Proj: 5 ft NE
Elev: 4168.1 ft
Depth: 10.0 ft
Date: 02/14/2025
SM
SW
ML
B-T6
Proj: 30 ft SW
Elev: 4170.1 ft
Depth: 10.0 ft
Date: 02/20/2025
ML
SW
SP-SM
SP-SM
B-T11
Proj: 55 ft NE
Elev: 4168.0 ft
Depth: 10.0 ft
Date: 04/10/2025
ML
CH
ML
SW
CL
MW-T9
Proj: 3 ft NE
Elev: 4167.2 ft
Depth: 10.0 ft
Date: 04/10/2025
SW-SM
GW
SC-SM
CL
B-T12
Proj: 48 ft NE
Elev: 4168.0 ft
Depth: 10.0 ft
Date: 04/10/2025
0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800
STATIONING (feet)
SITE MAP Alignment: -
B-T6
B-T8
B-T4
B-T5
B-T7
B-T9
B-T10
B-T11
B-T12
B-T13
MW-T1
MW-T2
MW-T4
MW-T5
MW-T6 MW-T7
MW-B-T2
MW-B-T1
MW-B-T3
MW-T3
MW-T9
MW-T8
N
LEGEND KEY
SM
SW
SW
SW
ML
ML
SP-SM
ML
SW
CH
CL
Shale
GW
SC-SM
Compass Minerals 2025
CROSS SECTION SE-NW
Tetra Tech | 4750 2100 S Suite 400 | Salt Lake City, UT | www.tetratech.com
Native
Stained
Black
Native
Native
Stained
Red
Sheen
Odor
Native
Odor
Native
Native
Native
Native
Stained
black
Native
Odor
Native
Native
FIll FIll
Fill
Native
Stained
BLack
FIll
FIll
Native
Native
Native
Fill
Native
Native
Native
Native
FIll
Native
Native
Native
EL
E
V
A
T
I
O
N

(
f
e
e
t
)
4155
4160
4165
4170
Native
SP
Stained
Black
terminated
at15'
Native
SP-SM Stained Red
terminated
at10'
terminated
at10'
,POORLYGRADED
SANDwith SILT(SP-SM),hydrocarbonodor
terminated
at10'
terminated
at10'
Native
ML
terminated
at10'
Native
SP-SM
saturated,SILTY
SANDwith CLAY(SP-SM),hyrocarbonodor
Native
SW
ED
tosubrounded,SANDY
SILT(ML)
Native
ML
saturated,SILT (ML)
Native
SM
,
Native
SP-SM
Stained
Red
odor
Native
CL-ML
Stained
Red
SILTY
CLAYwithSAND(CL-ML),stained
red,hydrocarbonodor
Native
ML
Stained
Black
Native
SW-SM
Stained
Black
WELL-GRADEDSANDwithSILT(SW-SM),stainedblack,hydrocarbonodor
Native
SP
,
GRADED
SAND(SP)
Native
SW
Stained
Black
EDSANDwithGRAVEL
(SW),stainedblack withhydrocarbonodor
FILLSW
EDSAND
(SW)
Native
SW-SM
Stained
Black
,WELL-GRADEDSANDwithSILT(SW-SM),stainedblack withhydrocarbonodor
FILLSW-SM
ED
containsgravel
Native
SW
,ED
SILT (SW)
FILL
SW
ED
FILLSW
Stained
Black
ED
black,hydrocarbonodor
FILL
sp
GRAVEL(SP)
FILL
FILL
SW
ED
MW-T1
Proj: 3 ft NE
Elev: 4171.2 ft
Elev: 4161.2 ft
Depth: 10.0 ft
MW-B-T1
Proj: 16 ft NE
Elev: 4171.8 ft
Elev: 4156.8 ft
Depth: 15.0 ft
MW-T4
Proj: 8 ft NE
Elev: 4170.7 ft
Elev: 4160.7 ft
Depth: 10.0 ft
MW-T5
Proj: 28 ft NE
Elev: 4168.1 ft
Elev: 4158.1 ft
Depth: 10.0 ft
MW-B-T3
Proj: 10 ft SW
Elev: 4166.9 ft
Elev: 4156.9 ft
Depth: 10.0 ft
B-T5
Proj: 6 ft SW
Elev: 4170.1 ft
Elev: 4160.1 ft
Depth: 10.0 ft
MW-T1-4.5
B-T1-10'
B-T1-15'
B-T1-8'
MW-T4-8'
MW-T5-9'
B-T3-5'
B-T5-7'
0 50 100 150 200 250 300 350 400 450 500 550 600 650
STATIONING (feet)
SITE MAP Alignment: -
B-T5
B-T4
B-T8
B-T6
MW-B-T2
MW-B-T3
MW-T4
MW-T7MW-T6
MW-T1
MW-T2
MW-T3
MW-T5
MW-B-T1
LEGEND KEY
ML
SP
SW
SP
SW
ML
Fill
SW
CL-ML
SW-SM
SP-SM
SM
Compass Minerals 2025
Cross Section S-N
Tetra Tech | 4750 2100 S Suite 400 | Salt Lake City, UT | www.tetratech.com
Native
ML
DTW
after
drilling
DTW
at time of
drilling
DTW
after
drilling
DTW
at time of
drilling
DTW
at time of
drilling
DTW
after
drilling
DTW
at time of
drilling
DTW
after
drilling
DTW
at time of
drilling

Appendix G
Laboratory Reports
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
Compass Minerals
Attn: Curtis Thomas
765 North 10500 West
Ogden, UT 84404
Work Order: 25E0145
Project: Mobile BLDG Water
5/12/2025
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 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
5/2/25 13:15 @ 20.1 °C
5/12/2025
Mobile BLDG Water
Sample ID: Mobile BLDG Water
Lab ID: 25E0145-01Matrix: Wastewater
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/2/25 10:30
Preparation
Date/Time
Sampled By: Curtis Thomas
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 5/6/255/6/250.002 EPA 8260D/5030BNDBenzene
mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDEthylbenzene
mg/L 5/6/255/6/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDNaphthalene
mg/L 5/6/255/6/250.005 EPA 8260D/5030BNDToluene
mg/L 5/6/255/6/250.015 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 5/6/255/6/250.0500 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 5/8/255/8/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Mobile BLDG Water CtF WO#: 25E0145
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Compass Minerals
Curtis Thomas
765 North 10500 West
Ogden, UT 84404
PO#:
Receipt:
Date Reported:
Project Name:
5/2/25 13:15 @ 20.1 °C
5/12/2025
Mobile BLDG Water
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.
Project Name: Mobile BLDG Water CtF WO#: 25E0145
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25B1161
Project: Compass Minerals
2/28/2025
Approved By:
Andrew Royer, 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 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T1-8'
Lab ID: 25B1161-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 10:55
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800083.3Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/18/252/18/250.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDToluene
mg/kg dry 2/18/252/18/250.90 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/253.00 EPA 8260B/C 5035A/[CALC]125Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2560EPA 8015 C3300Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 2 of 17Page 2 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T1-10'
Lab ID: 25B1161-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 11:00
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800075.6Total Solids
MBTEXn
mg/kg dry 2/20/252/20/250.13 EPA 8260D/5030BNDBenzene
mg/kg dry 2/20/252/20/250.33 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L2/20/252/20/250.20 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/20/252/20/250.33 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/20/252/20/250.33 EPA 8260D/5030BNDToluene
mg/kg dry 2/20/252/20/250.99 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/20/252/20/253.31 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2566EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 3 of 17Page 3 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T2-6'
Lab ID: 25B1161-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 10:45
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800081.1Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.31 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/18/252/18/250.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.31 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/18/252/18/250.31 EPA 8260D/5030BNDToluene
mg/kg dry 2/18/252/18/250.92 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/253.08 EPA 8260B/C 5035A/[CALC]85.6Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2562EPA 8015 C1250Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 4 of 17Page 4 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T2-7
Lab ID: 25B1161-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 12:45
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/18/252/18/250.005 EPA 8260D/5030B0.065Benzene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.086Ethylbenzene
mg/L 2/18/252/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.021Naphthalene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.371Toluene
mg/L 2/18/252/18/250.038 EPA 8260D/5030B0.624Xylenes, total
mg/L 2/18/252/18/250.125 EPA 8260D/5030B3.41Gasoline Range Organics
Gasoline Range
mg/L 2/18/252/18/250.125 EPA 8260B/C /5030A/[CALC]3.36Gasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 C31.0Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 5 of 17Page 5 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T2
Lab ID: 25B1161-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 12:50
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800082.5Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030B0.50Ethylbenzene
mg/kg dry 2/18/252/18/250.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDToluene
mg/kg dry 2/18/252/18/250.91 EPA 8260D/5030B4.58Xylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/253.03 EPA 8260B/C 5035A/[CALC]106Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2561EPA 8015 C2030Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 6 of 17Page 6 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T3-5
Lab ID: 25B1161-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 13:50
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800078.5Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.13 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.32 EPA 8260D/5030B1.00Ethylbenzene
mg/kg dry 2/18/252/18/250.19 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.32 EPA 8260D/5030B20.0Naphthalene
mg/kg dry 2/18/252/18/250.32 EPA 8260D/5030BNDToluene
mg/kg dry 2/18/252/18/250.95 EPA 8260D/5030B12.1Xylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/253.18 EPA 8260B/C 5035A/[CALC]329Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2564EPA 8015 C5100Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 7 of 17Page 7 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: B-T3
Lab ID: 25B1161-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 13:55
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/18/252/18/250.005 EPA 8260D/5030B0.088Benzene
mg/L 2/18/252/18/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/18/252/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.081Naphthalene
mg/L 2/18/252/18/250.012 EPA 8260D/5030BNDToluene
mg/L 2/18/252/18/250.038 EPA 8260D/5030B0.075Xylenes, total
mg/L 2/18/252/18/250.125 EPA 8260D/5030B0.395Gasoline Range Organics
Gasoline Range
mg/L 2/18/252/18/250.125 EPA 8260B/C /5030A/[CALC]0.244Gasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 C6.0Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 8 of 17Page 8 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T3-3.5
Lab ID: 25B1161-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/13/25 14:45
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800089.5Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/18/252/18/250.17 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030BNDToluene
mg/kg dry 2/18/252/18/250.84 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/252.79 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2556EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 9 of 17Page 9 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T1-4.5
Lab ID: 25B1161-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 11:00
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800092.0Total Solids
MBTEXn
mg/kg dry 2/20/252/20/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 2/20/252/20/250.27 EPA 8260D/5030BNDEthylbenzene
mg/kg dry J-LOW-L2/20/252/20/250.16 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/20/252/20/250.27 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/20/252/20/250.27 EPA 8260D/5030BNDToluene
mg/kg dry 2/20/252/20/250.82 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/20/252/20/252.72 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2554EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 10 of 17Page 10 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T1
Lab ID: 25B1161-10Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 11:05
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/18/252/18/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/18/252/18/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/18/252/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/18/252/18/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/18/252/18/250.012 EPA 8260D/5030BNDToluene
mg/L 2/18/252/18/250.038 EPA 8260D/5030BNDXylenes, total
mg/L 2/18/252/18/250.125 EPA 8260D/5030BNDGasoline Range Organics
Gasoline Range
mg/L 2/18/252/18/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 11 of 17Page 11 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T4
Lab ID: 25B1161-11Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 11:55
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/18/252/18/250.005 EPA 8260D/5030B0.497Benzene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.137Ethylbenzene
mg/L 2/18/252/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.039Naphthalene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.348Toluene
mg/L 2/18/252/18/250.038 EPA 8260D/5030B0.791Xylenes, total
mg/L 2/18/252/18/250.125 EPA 8260D/5030B5.07Gasoline Range Organics
Gasoline Range
mg/L 2/18/252/18/250.125 EPA 8260B/C /5030A/[CALC]4.98Gasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 C79.5Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 12 of 17Page 12 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T4-8'
Lab ID: 25B1161-12Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 12:00
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800088.1Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.11 EPA 8260D/5030B0.40Benzene
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030B1.37Ethylbenzene
mg/kg dry 2/18/252/18/250.17 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030B6.78Naphthalene
mg/kg dry 2/18/252/18/250.28 EPA 8260D/5030B0.28Toluene
mg/kg dry 2/18/252/18/250.85 EPA 8260D/5030B5.44Xylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/252.84 EPA 8260B/C 5035A/[CALC]218Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2557EPA 8015 C5410Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 13 of 17Page 13 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T5-9'
Lab ID: 25B1161-13Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 12:50
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/19/252/19/250.1 CTF800082.6Total Solids
MBTEXn
mg/kg dry 2/18/252/18/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030B0.80Ethylbenzene
mg/kg dry 2/18/252/18/250.18 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/18/252/18/250.30 EPA 8260D/5030B1.08Toluene
mg/kg dry 2/18/252/18/250.91 EPA 8260D/5030B6.41Xylenes, total
Gasoline Range
mg/kg dry 2/18/252/18/253.03 EPA 8260B/C 5035A/[CALC]136Gasoline Range Organics
Diesel Range
mg/kg dry 2/21/252/21/2561EPA 8015 C389Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 14 of 17Page 14 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
Sample ID: MW-T5
Lab ID: 25B1161-14Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/14/25 12:55
Preparation
Date/Time
Sampled By: Richard Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/18/252/18/250.005 EPA 8260D/5030B0.191Benzene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.124Ethylbenzene
mg/L 2/18/252/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.027Naphthalene
mg/L 2/18/252/18/250.012 EPA 8260D/5030B0.648Toluene
mg/L 2/18/252/18/250.038 EPA 8260D/5030B0.875Xylenes, total
mg/L 2/18/252/18/250.125 EPA 8260D/5030B4.40Gasoline Range Organics
Gasoline Range
mg/L 2/18/252/18/250.125 EPA 8260B/C /5030A/[CALC]4.33Gasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 C156Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 15 of 17Page 15 of 18
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/14/25 14:30 @ 5.4 °C
2/28/2025
Compass Minerals
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-L = Estimated low due to low recovery of LCS
Project Name: Compass Minerals CtF WO#: 25B1161
www.ChemtechFord.com
Page 16 of 17Page 16 of 18
DRO added to all samples
per customer phone call
APR 02-19-2025
Page 17 of 18
Page 18 of 18
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25B1671
Project: Compass Minerals
3/6/2025
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 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T1-10'
Lab ID: 25B1671-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 9:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800081.0Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.19 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.93 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/253.09 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2562EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 2 of 23Page 2 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T1-15'
Lab ID: 25B1671-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 9:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800075.3Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.13 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.20 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/251.00 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/253.32 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2566EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 3 of 23Page 3 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T2-10'
Lab ID: 25B1671-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 10:15
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800076.4Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.13 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.20 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.33 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.98 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/253.27 EPA 8260B/C 5035A/[CALC]5.02Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2565EPA 8015 C305Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 4 of 23Page 4 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T2-15'
Lab ID: 25B1671-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 10:25
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800071.8Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.10 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/250.345 EPA 8260B/C 5035A/[CALC]0.351Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2570EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 5 of 23Page 5 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T4
Lab ID: 25B1671-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 11:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 6 of 23Page 6 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T4-4'
Lab ID: 25B1671-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 11:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800086.5Total Solids
MBTEXn
mg/kg dry 2/26/252/26/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 2/26/252/26/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/26/252/26/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/26/252/26/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/26/252/26/250.03 EPA 8260D/5030BNDToluene
mg/kg dry 2/26/252/26/250.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/26/252/26/250.273 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2558EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 7 of 23Page 7 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T5
Lab ID: 25B1671-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 12:00
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]0.133Gasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 8 of 23Page 8 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T5-7'
Lab ID: 25B1671-08Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 12:15
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800080.5Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.12 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.19 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.31 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.93 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/253.10 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2562EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 9 of 23Page 9 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T6-8'
Lab ID: 25B1671-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 12:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800079.2Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.13 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.32 EPA 8260D/5030B0.51Ethylbenzene
mg/kg dry 2/25/252/25/250.19 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.32 EPA 8260D/5030B9.09Naphthalene
mg/kg dry 2/25/252/25/250.32 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.95 EPA 8260D/5030B4.66Xylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/253.16 EPA 8260B/C 5035A/[CALC]62.8Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2563EPA 8015 C2020Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 10 of 23Page 10 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T6-10'
Lab ID: 25B1671-10Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 12:40
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800077.4Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030B0.03Naphthalene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.09 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/250.314 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2565EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 11 of 23Page 11 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T6
Lab ID: 25B1671-11Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 12:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030B0.028Benzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030B0.090Ethylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030B0.709Naphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030B0.604Xylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]7.51Gasoline Range Organics
Diesel Range
mg/L 2/27/252/26/2510.0 EPA 8015 C903Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 12 of 23Page 12 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T6-9
Lab ID: 25B1671-12Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 13:20
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800087.9Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.17 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.85 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/252.84 EPA 8260B/C 5035A/[CALC]98.1Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2557EPA 8015 C5940Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 13 of 23Page 13 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T6-15
Lab ID: 25B1671-13Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 13:25
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800088.5Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.08 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/250.283 EPA 8260B/C 5035A/[CALC]2.87Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2557EPA 8015 C713Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 14 of 23Page 14 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T6-20
Lab ID: 25B1671-14Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 13:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800089.3Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.17 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.28 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.84 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/252.80 EPA 8260B/C 5035A/[CALC]9.41Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2556EPA 8015 C765Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 15 of 23Page 15 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T7-5'
Lab ID: 25B1671-15Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/20/25 14:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800088.8Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.01 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.02 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.03 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.09 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/250.284 EPA 8260B/C 5035A/[CALC]0.501Gasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2556EPA 8015 C715Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 16 of 23Page 16 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T8-4.5
Lab ID: 25B1671-16Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/21/25 10:05
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%2/24/252/24/250.1 CTF800094.0Total Solids
MBTEXn
mg/kg dry 2/25/252/25/250.11 EPA 8260D/5030BNDBenzene
mg/kg dry 2/25/252/25/250.27 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 2/25/252/25/250.16 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 2/25/252/25/250.27 EPA 8260D/5030BNDNaphthalene
mg/kg dry 2/25/252/25/250.27 EPA 8260D/5030BNDToluene
mg/kg dry 2/25/252/25/250.80 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 2/25/252/25/252.66 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 2/28/252/27/2553EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 17 of 23Page 17 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T8
Lab ID: 25B1671-17Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/21/25 10:10
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 2/27/252/26/251.0 EPA 8015 C4.5Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 18 of 23Page 18 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T7
Lab ID: 25B1671-18Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/21/25 12:55
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 19 of 23Page 19 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: B-T1
Lab ID: 25B1671-19Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/21/25 13:25
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]0.964Gasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 C1.6Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 20 of 23Page 20 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
Sample ID: MW-T6
Lab ID: 25B1671-20Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/21/25 13:40
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/26/252/26/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/26/252/26/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/26/252/26/250.012 EPA 8260D/5030BNDToluene
mg/L 2/26/252/26/250.038 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 2/26/252/26/250.125 EPA 8260B/C /5030A/[CALC]1.17Gasoline Range Organics
Diesel Range
mg/L 2/26/252/26/251.0 EPA 8015 C13.4Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 21 of 23Page 21 of 24
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/21/25 16:35 @ 5.2 °C
3/6/2025
Compass Minerals
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.
Project Name: Compass Minerals CtF WO#: 25B1671
www.ChemtechFord.com
Page 22 of 23Page 22 of 24
Page 23 of 24
Page 24 of 24
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25B1295
Project: Compass Minerals
2/27/2025
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 5
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/18/25 14:58 @ 0.0 °C
2/27/2025
Compass Minerals
Sample ID: MW-T3
Lab ID: 25B1295-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/17/25 11:44
Preparation
Date/Time
Sampled By: RichieTorney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/20/252/20/250.005 EPA 8260D/5030BNDBenzene
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/20/252/20/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDToluene
mg/L 2/20/252/20/250.038 EPA 8260D/5030BNDXylenes, total
mg/L 2/20/252/20/250.125 EPA 8260D/5030BNDGasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1295
www.ChemtechFord.com
Page 2 of 5Page 2 of 5
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/18/25 14:58 @ 0.0 °C
2/27/2025
Compass Minerals
Sample ID: MW-T2
Lab ID: 25B1295-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 2/17/25 11:50
Preparation
Date/Time
Sampled By: RichieTorney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 2/20/252/20/250.005 EPA 8260D/5030B0.234Benzene
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDEthylbenzene
mg/L 2/20/252/20/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDNaphthalene
mg/L 2/20/252/20/250.012 EPA 8260D/5030BNDToluene
mg/L 2/20/252/20/250.038 EPA 8260D/5030BNDXylenes, total
mg/L 2/20/252/20/250.125 EPA 8260D/5030B0.380Gasoline Range Organics
Diesel Range
mg/L 2/20/252/20/251.0 EPA 8015 C1.7Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25B1295
www.ChemtechFord.com
Page 3 of 5Page 3 of 5
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
2/18/25 14:58 @ 0.0 °C
2/27/2025
Compass Minerals
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.
Project Name: Compass Minerals CtF WO#: 25B1295
www.ChemtechFord.com
Page 4 of 5Page 4 of 5
DRO added to all samples
per customer phone call
APR 02-19-2025
Page 5 of 5
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25D1133
Project: Compass Minerals
4/21/2025
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 4
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/14/25 13:27 @ 18.8 °C
4/21/2025
Compass Minerals
Sample ID: MW-B-T3
Lab ID: 25D1133-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/14/25 11:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/18/254/18/250.001 EPA 8260D/5030B0.080Benzene
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.005Ethylbenzene
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.032Naphthalene
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.003Toluene
mg/L 4/18/254/18/250.008 EPA 8260D/5030B0.045Xylenes, total
Gasoline Range
mg/L 4/18/254/18/250.0250 EPA 8260B/C /5030A/[CALC]0.166Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 C3.8Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1133
www.ChemtechFord.com
Page 2 of 4Page 2 of 4
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/14/25 13:27 @ 18.8 °C
4/21/2025
Compass Minerals
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.
Project Name: Compass Minerals CtF WO#: 25D1133
www.ChemtechFord.com
Page 3 of 4Page 3 of 4
Page 4 of 4
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25D1069
Project: Compass Minerals
4/22/2025
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 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T7
Lab ID: 25D1069-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 9:55
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0235Gasoline Range Organics
Diesel Range
mg/L 4/15/254/15/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 2 of 25Page 2 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T3
Lab ID: 25D1069-02Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 10:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0234Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 3 of 25Page 3 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T1
Lab ID: 25D1069-03Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 11:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0220Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 4 of 25Page 4 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-B-T1
Lab ID: 25D1069-04Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 13:40
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.004 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.010 EPA 8260D/5030B0.011Naphthalene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.030 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.100 EPA 8260B/C /5030A/[CALC]0.486Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 C4.1Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 5 of 25Page 5 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T2
Lab ID: 25D1069-05Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 12:00
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.008 EPA 8260D/5030B0.393Benzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030B0.004Ethylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030B0.004Naphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030B0.002Toluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.428Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 C2.0Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 6 of 25Page 6 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T6
Lab ID: 25D1069-06Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/9/25 13:10
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.004 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.030 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.100 EPA 8260B/C /5030A/[CALC]0.646Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 C17.8Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 7 of 25Page 7 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T7-9'
Lab ID: 25D1069-07Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 9:50
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800085.4Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.005 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/18/254/18/250.007 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry J-High-C4/18/254/18/250.01 EPA 8260D/5030B0.01Naphthalene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.115 EPA 8260B/C 5035A/[CALC]3.32Gasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2559EPA 8015 C121Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 8 of 25Page 8 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T7
Lab ID: 25D1069-08Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 9:55
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.004 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.030 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.100 EPA 8260B/C /5030A/[CALC]0.829Gasoline Range Organics
Diesel Range
mg/L 4/18/254/18/251.0 EPA 8015 C8.0Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 9 of 25Page 9 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T9-7'
Lab ID: 25D1069-09Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 10:25
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800087.8Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.004 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/18/254/18/250.007 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.110 EPA 8260B/C 5035A/[CALC]14.2Gasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2557EPA 8015 C530Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 10 of 25Page 10 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T9
Lab ID: 25D1069-10Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 10:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.004 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.010 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.030 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.100 EPA 8260B/C /5030A/[CALC]0.999Gasoline Range Organics
Diesel Range
mg/L 4/18/254/18/251.0 EPA 8015 C10.0Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 11 of 25Page 11 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T8-8'
Lab ID: 25D1069-11Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 11:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800085.4Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.002 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.005 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/18/254/18/250.005 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/18/254/18/250.005 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.0484 EPA 8260B/C 5035A/[CALC]0.624Gasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2559EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 12 of 25Page 12 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T10-9'
Lab ID: 25D1069-12Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 12:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800076.7Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.005 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030B0.02Ethylbenzene
mg/kg dry 4/18/254/18/250.008 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry J-High-C4/18/254/18/250.65 EPA 8260D/5030B0.87Naphthalene
mg/kg dry 4/18/254/18/250.01 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.04 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.652 EPA 8260B/C 5035A/[CALC]9.62Gasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2565EPA 8015 C752Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 13 of 25Page 13 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T10
Lab ID: 25D1069-13Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 13:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.004 EPA 8260D/5030B0.196Benzene
mg/L 4/17/254/17/250.010 EPA 8260D/5030B0.047Ethylbenzene
mg/L 4/18/254/17/250.006 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.100 EPA 8260D/5030B0.784Naphthalene
mg/L 4/17/254/17/250.010 EPA 8260D/5030B0.066Toluene
mg/L 4/17/254/17/250.030 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.100 EPA 8260B/C /5030A/[CALC]5.14Gasoline Range Organics
Diesel Range
mg/L 4/16/254/15/2520.0 EPA 8015 C1570Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 14 of 25Page 14 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T11-6'
Lab ID: 25D1069-14Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 14:05
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800084.4Total Solids
MBTEXn
mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030BNDBenzene
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDToluene
mg/kg dry 4/17/254/17/250.009 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/17/254/17/250.0301 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2559EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 15 of 25Page 15 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T11
Lab ID: 25D1069-15Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 14:10
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0278Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 16 of 25Page 16 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T12-5'
Lab ID: 25D1069-16Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 14:30
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800090.0Total Solids
MBTEXn
mg/kg dry 4/17/254/17/250.001 EPA 8260D/5030BNDBenzene
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/17/254/17/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/17/254/17/250.003 EPA 8260D/5030BNDToluene
mg/kg dry 4/17/254/17/250.008 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/17/254/17/250.0278 EPA 8260B/C 5035A/[CALC]0.0283Gasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2556EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 17 of 25Page 17 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T12
Lab ID: 25D1069-17Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 14:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030B0.001Benzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0214Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 18 of 25Page 18 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T13-5'
Lab ID: 25D1069-18Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 15:00
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800081.6Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.001 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/18/254/18/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.009 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.0306 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2561EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 19 of 25Page 19 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: B-T13
Lab ID: 25D1069-19Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 15:05
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030B0.039Benzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030B0.002Naphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030B0.009Toluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0738Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 20 of 25Page 20 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T9
Lab ID: 25D1069-20Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/10/25 15:25
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
Inorganic
%4/17/254/17/250.1 CTF800083.0Total Solids
MBTEXn
mg/kg dry 4/18/254/18/250.001 EPA 8260D/5030BNDBenzene
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 4/18/254/18/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDNaphthalene
mg/kg dry 4/18/254/18/250.003 EPA 8260D/5030BNDToluene
mg/kg dry 4/18/254/18/250.009 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 4/18/254/18/250.0301 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 4/16/254/16/2560EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 21 of 25Page 21 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T8
Lab ID: 25D1069-21Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/11/25 11:10
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]0.0264Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 22 of 25Page 22 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
Sample ID: MW-T9
Lab ID: 25D1069-22Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/11/25 11:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/17/254/17/250.0008 EPA 8260D/5030BNDBenzene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDEthylbenzene
mg/L 4/17/254/17/250.001 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDNaphthalene
mg/L 4/17/254/17/250.002 EPA 8260D/5030BNDToluene
mg/L 4/17/254/17/250.006 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 4/17/254/17/250.0200 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 CNDDiesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 23 of 25Page 23 of 27
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
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/11/25 13:45 @ 5.0 °C
4/22/2025
Compass Minerals
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-High-C = Analyte estimated high based on CCV recovery
Project Name: Compass Minerals CtF WO#: 25D1069
www.ChemtechFord.com
Page 24 of 25Page 24 of 27
Page 25 of 27
Page 26 of 27
Page 27 of 27
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
Tetra Tech Inc.
Attn: Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Work Order: 25D1133
Project: Compass Minerals
4/28/2025
Amended
Approved By:
Reed Hendricks, Lab Director
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 5
Tetra Tech Inc.
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
Project: Compass Minerals
Project Manager: Richie Torney
Laboratory ID Sample Name
25D1133-01 MW-B-T3
Amended Report Narrative

Report Changes:
MTBE is added.
www.ChemtechFord.com
Project Name: Compass Minerals CtF WO#: 25D1133
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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
Amended Amended
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/14/25 13:27 @ 18.8 °C
4/28/2025
Compass Minerals
Sample ID: MW-B-T3
Lab ID: 25D1133-01Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 4/14/25 11:35
Preparation
Date/Time
Sampled By: Richie Torney
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 4/18/254/18/250.001 EPA 8260D/5030B0.080Benzene
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.005Ethylbenzene
mg/L 4/18/254/18/250.002 EPA 8260D/5030BNDMethyl-tert-butyl ether (MTBE)
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.032Naphthalene
mg/L 4/18/254/18/250.002 EPA 8260D/5030B0.003Toluene
mg/L 4/18/254/18/250.008 EPA 8260D/5030B0.045Xylenes, total
Gasoline Range
mg/L 4/18/254/18/250.0250 EPA 8260B/C /5030A/[CALC]0.166Gasoline Range Organics
Diesel Range
mg/L 4/17/254/16/251.0 EPA 8015 C3.8Diesel Range Organics
Project Name: Compass Minerals CtF WO#: 25D1133
www.ChemtechFord.com
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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
Amended Amended
Tetra Tech Inc.
Richie Torney
4750 W 2100 S, Suite 400
Salt Lake City, UT 84120
PO#:
Receipt:
Date Reported:
Project Name:
117-115476-25011
4/14/25 13:27 @ 18.8 °C
4/28/2025
Compass Minerals
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.
Project Name: Compass Minerals CtF WO#: 25D1133
www.ChemtechFord.com
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Project Profile

3475 East Foothill Boulevard, Pasadena, CA 91107 USA
p. [phone]
f. [phone]
[e-mail]
Tetra Tech is Leading with Science® to provide innovative, sustainable solutions that help our clients address their water, environment,
infrastructure, resource management, energy, and international development challenges. We are proud to be home to leading technical experts
in every sector and to use that expertise throughout the project life cycle. Our commitment to safety is ingrained in our culture and at the
forefront of every project. We combine the resources of a global, multibillion dollar company with local, client-focused delivery . tetratech.com