DERR-2025-000045

Stantec Consulting Services Inc.
2890 East Cottonwood Parkway
Suite 300
Salt Lake City UT 84121-7283
January 2, 2025
Project/File: 203724146
Alex Jones
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
195 North 1950 West, First Floor
Salt Lake City, Utah 84116
Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK
Dear Mr. Jones,
On behalf of 7-Eleven, Inc. (7-Eleven) Stantec Consulting Services Inc. (Stantec) proposes the following work
plan and budget (WP&B) to perform environmental consulting services for Facility ID 4000775, Release Site
OLK (the Site), located at 1344 Fort Union Boulevard, Cottonwood Heights, Utah (Figure 1). On December
10, 2024, Stantec submitted a Utah Petroleum Storage Tank (PST) Trust Fund Eligibility Application and
appropriate private insurance documentation for the Site.
The purpose of this work plan is to present a technical approach and cost estimate to the Utah Department
of Environmental Quality (UDEQ), Division of Environmental Response and Remediation (DERR), to conduct
a subsurface investigation including the following scope of work: project management and field work
preparation, advancement of four soil borings completed as groundwater monitoring wells, soil and
groundwater sampling, reporting, and reimbursement services. The scope of work proposed herein would
be designated as WP&B OLK-01 with the objective of further defining on-site soil and groundwater petroleum
hydrocarbon impacts.
BACKGROUND
The former underground storage tank (UST) system was installed in 1984 and closed by removal on June
26, 2024 by Stantec. The former UST system was located in the center of the property (Figure 1) and
consisted of one 15,000-gallon gasoline UST, one split compartment UST (with one 8,000-gallon gasoline
compartment and one 7,000-gallon diesel compartment), and four product dispensers.
In October 2024, Release Site OLK was opened based on analytical laboratory results of UST closure
samples which contained dissolved petroleum hydrocarbon concentrations above the screening levels
established by the UDEQ DERR PST Branch. Groundwater samples GW-1 and GW-2 (Figure 1) contained
benzene, toluene, total petroleum hydrocarbons (TPH) gasoline range organics (GRO), and TPH diesel range
organics (DRO) concentrations above the Initial Screening Levels (ISLs). The benzene concentration of the
GW-1 sample also exceeded the Tier 1 Screening Level (TSL).
January 2, 2025
Alex Jones
Page 2 of 4
Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

SCOPE OF WORK
Task 1 – Project Management and Field Work Preparation
Task 1 includes the preparation of this work plan, including communication and coordination with DERR. A
Site-specific health and safety plan will also be prepared to address hazards associated with the proposed
scope of work.
Task 2 – Subsurface Investigation
Following DERR approval of this work plan and budget, Stantec will oversee the advancement of four on-site
direct push soil borings up to approximately 18 feet below ground surface (bgs) with collection of continuous
core samples into acetate sleeves at five-foot intervals. Stantec will collect up to three soil samples per boring
for laboratory analysis. At least one soil sample will be collected from the depth exhibiting the highest level
of petroleum hydrocarbon impacts (based on field screening) and/or the capillary fringe. Stantec will also use
field screening results to collect nonimpacted soil samples above and below the impacted zone. Soil samples
will be field screened for volatile organic compounds using a Minirae 3000 photoionization detector (PID).
The objective of soil sampling is to further define the vertical and lateral extent of petroleum hydrocarbon
impacted soil, if encountered.
Following soil sampling, each of the four soil borings will be completed as groundwater monitoring wells
(MWOLK-1 through MWOLK-4). Groundwater is expected to be encountered at approximately 8 feet bgs
based on groundwater encountered during tank removal activities in June 2024. The wells will be completed
at a total depth of approximately 15 feet bgs. The wells will be constructed using 5 feet of 2-inch outside
diameter, schedule 40 PVC casing and 10 feet of 0.010-inch slotted screen. The wells will be completed with
the appropriate filter sand to one foot above the top of screen, bentonite seal to one foot below grade, and 8-
inch diameter flush mount well vault installed within a 2-foot square concrete pad. The proposed well
locations are shown on Figure 1.
Cost bids for well installation were requested from Utah licensed drilling contractors Cascade Environmental,
Pacific West Environmental, LLC (Pacific West), Direct Push Services LLC, and ET Technologies, Inc. Pacific
West provided the lowest responsible bid; therefore, Stantec will award the work to Pacific West. Copies of
the subcontractor cost estimates are provided in Attachment A.
Soil samples will be labeled with the sample identification, collection date, and time, and placed into an ice
chilled cooler for delivery to the project laboratory under chain-of-custody (COC) documentation. Soil
samples will be analyzed for TPH-GRO, methyl tertiary-butyl ether, benzene, toluene, ethylbenzene, total
xylenes, and naphthalene (MBTEXN) by Environmental Protection Agency (EPA) Method 8260 and
TPH-DRO by EPA Method 8015. Analyses will be performed by Utah certified Pace Analytical National
(Pace) of Mount Juliet, Tennessee. In order to prepare a waste profile application for the drill cuttings, one
sample will be submitted to Chemtech-Ford Laboratories of Sandy, Utah for analysis of total lead by EPA
Method 6010D in additional to analysis for petroleum hydrocarbon compounds.
January 2, 2025
Alex Jones
Page 3 of 4
Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

Following well installation, Stantec will survey relative top of casing elevations for the four on-site monitoring
wells. Static depth to water measurements will be collected using a battery-powered water level meter and
recorded to the nearest one hundredth of a foot. Stantec will then develop the wells by removing up to six
well volumes of groundwater via weighted, disposable bailers. Should a well be bailed dry during
development, Stantec will allow the well to recover and attempt to bail the well dry a second time. Following
development and after allowing the water level in the wells to recover, each well will be sampled via bailer.
Purged groundwater will be thin spread on the surface near each well location.
Groundwater samples will be collected in five 40-milliliter (mL) amber glass volatile organic analysis (VOA)
containers containing hydrochloric acid (HCl) preservative. VOAs will be filled in a manner to minimize
sample volatilization and remove all headspace. Stantec will also submit a trip blank and blind field duplicate
sample with the groundwater samples collected MWOLK-1 through MWOLK-4. Samples will be labeled with
the sample identification, collection date, and time, and placed into an ice chilled cooler for delivery to the
project laboratory under COC documentation. Groundwater samples will be analyzed for MBTEXN and
TPH-GRO by EPA Method 8260 and TPH-DRO by EPA Method 8015. All analyses will be performed by
Pace.
Following completion of all field activities and receipt of analytical laboratory reports, Stantec will prepare one
subsurface investigation report documenting the results of the WP&B OLK-01 scope of work. The report will
include a summary of field activities, site plan, boring logs, soil and groundwater sampling results tabulated
in data summary tables, groundwater isoconcentration maps, conclusions and recommendations, and
laboratory reports with associated COC documentation.
Task 3 – Reimbursement Services
Stantec’s services will include preparation of reimbursement claims on behalf of 7-Eleven. This task includes
assembling invoices paid by 7-Eleven, subcontractor invoices, details of charges, Stantec invoices, proof of
payment documentation, the DERR Standardized Invoice Form, and the DERR Request for Payment
Voucher Summary Worksheet.
ESTIMATED COSTS
The estimated costs for the scope of work described in this work plan are presented in Table 1. Non-
reimbursable costs, such as subcontractor markup, have been omitted from the cost breakdown. The costs
presented in Table 1 represent Stantec’s estimate of likely charges to be incurred during the implementation
of the scope of work described above. Actual charges to the tasks and activities included in the scope may
vary from those presented in the estimate as activities and tasks require either more or less effort than
estimated. Stantec will contact the DERR project manager if there is significant diversion from the estimated
cost breakdown, or if additional authorization above the total estimated cost of this work plan is required.

January 2, 2025
Alex Jones
Page 4 of 4
Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

Should you have any questions or require any additional information, please contact Anna Skinner at
[phone].
Sincerely,
STANTEC CONSULTING SERVICES INC.

Anna Skinner
Project Manager
Certified Consultant #0271
Phone: [phone]
[e-mail]
Attachments: Figure 1 – Site Plan
Table 1 – Estimated Costs for WP&B OLK-01
Attachment A – Drilling Subcontractor Bids

Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

FIGURE 1
Site Plan
RUL
CANOPY/DISPENSERS
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7-ELEVEN
Store No. 47151
East Fort Union BLVD
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APPROXIMATE SCALE IN FEET
No warranty is made by Stantec as to the accuracy, reliability, or completeness of these data. Original data were compiled
from various sources. This information may not meet National Map Accuracy Standards. This product was developed
electronically, and may be updated without notification. Any reproduction may result in a loss of scale and or information.
FILEPATH:\\us0395-ppfss01\shared_projects\203723864\05_report_deliv\deliverable\reports\cn\site_plan_47151_cn.pdf
410 17th Street Suite 1400
Denver, Colorado 80202
LEGEND:
APPROXIMATE PROPERTY BOUNDARY
WATER
SEWER
NATURAL GAS
BURIED ELECTRICAL
OVERHEAD ELECTRICAL
PRODUCT LINE
POWER POLE
SITE LAMP
PROPOSED BORING LOCATION
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FOR:
CHECKED BY:PROJECT NUMBER:
© 2024 Microsoft Corporation © 2024 Maxar ©CNES (2024) Di Airbus DS
APPROVED BY:DATE:
FIGURE:
1SITE MAP
AMSCCLCCL/AMS203724146 01/02/2025
7-ELEVEN No. 47151
1344 FT UNION BLVD
COTTONWOOD HEIGHTS, UTAH 84121
SS-1/USC-1
GW-1 SS-2
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Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

TABLE 1
Estimated Costs for WP&B OLK-01
Section 0100 - Project Management and Work Plan Preparation
• Work Plan Preparation
Initial Subsurface Investigation 1 NTE @ $2,000.00 = $2,000
Section 0100 Subtotal $2,000
Section 0200 - Site Specific Health and Safety Plan
• Initial Health & Safety Plan
Health & Safety Plan 1
NTE @ $400.00 = $400
Section 0200 Subtotal $400
Section 0400 - Laboratory Analyses
Pace Analytical National, Mount Juliet, Tennessee
• Soil - EPA 8260B MBTEXN & TPH-GRO
12 samples @ $51.00 = $612
• Water - EPA 8260B MBTEXN & TPH-GRO
4 samples @ $46.00 = $184
Chemtech-Ford Analytical Laboratories, Sandy, Utah
• Soil - ET Technologies UST Profile (MBTEXN, GRO, and total lead with next day rush TAT)
1 samples @ $200.00 = $200
Section 0400 Subtotal $996
Section 0500 - Project Reporting
• Subsurface Investigation Report
Principal P100 1 hours @ $169.00 = $169
Professional P102 2 hours @ $147.00 = $294
PM P103 8 hours @ $118.00 = $944
Field P104 12 hours @ $101.00 = $1,212
Drafter P107 5 hours @ $85.00 = $425
Admin P109 1 hours @ $62.00 = $62
Section 0500 Subtotal $3,106
Section 0600 - Groundwater Monitoring Well Installation and Soil Sampling
• Drilling Subcontractor Bid - Four Wells (Pacific West)
1 bid @ $6,725.00 = $6,725
• Private Utility Locate (GPRS)
1 LS @ $2,000.00 = $2,000
• Scheduling, Oversight, and Field Support
PM P103 6 hours @ $118.00 = $708
• Field Supervision
Preparation P104 2 hours @ $101.00 = $202
Field P104 20 hours @ $101.00 = $2,020
• Consultant Travel (2, 15-minute round trips)
Field P104 0.5 hours @ $101.00 = $51
• Equipment and Supplies
PID 2 days @ $95.00 = $190
Sampling Supplies 2 days @ $25.00 = $50
Traffic Safety Equipment 2 days @ $15.00 = $30
Section 0600 Subtotal $11,976
c
Table 1
Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK
Estimated Costs for WP&B OLK-01
c
fnl_bgt_47151_si_20250102.xlsx Page 1 of 2 Stantec Consulting Services Inc.
c
Table 1
Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK
Estimated Costs for WP&B OLK-01
c
Section 0700 - Groundwater Monitoring and Sampling (1 Event)
• Scheduling, Oversight, and Field Support
PM P103 4 hours @ $118.00 = $472
• Survey Top of Casing (4 Wells)
Field (x2) P104 4 hours @ $101.00 = $404
• Development and Sampling (4 Wells, purging of 6 well volumes for development)
Preparation P104 2 hours @ $101.00 = $202
Field (x2) P104 6 hours @ $101.00 = $606
• Consultant Travel (1, 15-minute round trip for 2 staff)
Field (x2) P104 0.5 hours @ $101.00 = $51
• Equipment and Supplies
Oil/Water Interface Probe 0.5 day @ $55.00 = $28
Water Level Meter 1 day @ $25.00 = $25
Sampling Supplies (x2 staff) 2 day @ $25.00 = $50
Traffic Safety Equipment 1 day @ $15.00 = $15
Survey Equipment 1 day @ $50.00 = $50
Weighted Bailer 4 each @ $11.00 = $44
Section 0700 Subtotal $1,946
Section 1200 - Waste Disposal
• Solid Waste Disposal Subcontractor
1 drum @ $210.00 = $210
• Waste Disposal Coordination
PM P103 4 hours @ $118.00 = $472
Section 1200 Subtotal $682
Section 1500 - Reimbursement
• PST Fund Claim Preparation
Senior PM P101 4 hours @ $152.00 = $608
PST Specialist P108 16 hours @ $78.00 = $1,248
Section 1500 Subtotal $1,856
Total Budget $22,962
fnl_bgt_47151_si_20250102.xlsx Page 2 of 2 Stantec Consulting Services Inc.

Reference: Work Plan and Budget for Subsurface Investigation
7-Eleven Store No. 47151
1344 Fort Union Boulevard, Cottonwood Heights, Utah
Facility ID 4000775, Release Site OLK

ATTACHMENT A
Drilling Subcontractor Bids
Pacific West Environmental & Infrastructure, LLC
P.O. Box 70
Azle, TX 76098 US
[phone]
[e-mail]
Estimate
ADDRESS
Stantec- 214927- Speedway 9414
2890 East Cottonwood Parkway
Suite 300
Salt Lake City, UT 84121
SHIP TO
Stantec- 214927- Speedway 9414
1344 Fort Union Blvd
Cottonwood Heights, UT
ESTIMATE #DATE
214927 12/05/2024
SALES REP PROJECT MANAGER
GN JH
ACTIVITY QTY RATE AMOUNT
Drilling
Mobilization
1 450.00 450.00
Drilling
Geoprobe Day Rate
1 1,800.00 1,800.00
Drilling
2-Inch Permanent MW
4 275.00 1,100.00
Drilling
Wed Pad Completion
4 150.00 600.00
Drilling
Saw-cuting/Coring
1 650.00 650.00
Drilling
Hydrovac Day Rate
1 2,000.00 2,000.00
Drilling
55-gallon drum
1 125.00 125.00
Three soil borings to 18 feet.
Convert soil borings to 15 feet 2-inch monitor wells set with DPT rods. 10 feet
of screen, 5 feet riser. 10/20 sand and bentonite as well seal.
Clear borings to 110% of auger diameter using hydrovac.
SUBTOTAL 6,725.00
TAX (0.02) 0.00
TOTAL $6,725.00
Accepted By Accepted Date
Stantec 12/5/2024
2890 East Cottonwood Parkway, Ste 300 197364
Salt Lake City, UT 84121
DPT Wells 7-Eleven 47151/Speedway 9414
Anna Skinner 134 Fort Union Blvd
[e-mail] Cottonwood Heights
UT
Cascade Rep Contact Information
Scope of Work
Quantity Unit Sales Price Subtotal
1 Lump Sum 450.00$ 450.00$
Each 125.00$ -$
1 Day 2,750.00$ 2,750.00$
1 Day 2,950.00$ 2,950.00$
Boring Abandonment Each 15.00$ -$
2 inch Schd 40 PVC Well Casing 32 Feet 5.00$ 160.00$
2 inch Schd 40 PVC Prepack Well Screen 5' Sections 8 Each 175.00$ 1,400.00$
8-inch Flush Grade Monuments 4 Each 350.00$ 1,400.00$
55 Gallon Reconditioned DOT Drum 1 Each 160.00$ 160.00$
Concrete Coring - 12" Cores 3 Each 385.00$ 1,155.00$
Pre-Tax Total
Tax Percentage
Taxes
Quote Total
Four (4) 2-inch monitoring wells will be completed to 18-feet, using a truck mounted DPT rig. Three of the wells will be constructed in asphalt the remain well will be in the
landscape.
• Private utility cleared will be provided by others
• The wells will be completed using schd 40 PVC using 10-feet of prepack screen per well; the surface protection will be flush grade 8" traffic rated monuments
• The boring locations will be cleared to 8-feet using a air knife vac truck by the DPT crew
Drill cuttings and decon/development water will be contained in 55-gallon drums and will remain on site. Expect reasonable drill rig access. Well and borings seals that take
more than 25%-hole volume, will be sealed on a time and material basis. Assume 7:00AM to 5:30PM work hours and no prevailing wage requirements.
Account Name Bid Date
Address Quote Number
Quote Revision Date
Bill To Account Project Zip
Project Name
Contact Name Project Address
Email Project City
Phone Project State(801) 652-5138
Number
Prepared By Trent Castner Email [e-mail]
Description
$10,425.00
Mobilization/Demobilization - DPT
UT Well Logs
DPT Drilling Daily Rate - Up to 10 Hours per Day
Air Knife/Vac Truck - Crew
This quote is based on information provided by you and is valid for 45 days from the bid date. Unless previously agreed, Cascade requires a 2-week notice prior to
mobilization. Your firm is responsible for 1) Obtaining any site specific permits, 2) Locating and clearly marking underground installations or utilities, 3) Furnishing dig Alert
numbers at least three working days prior to scheduled start date and proof of private locating services, 4) Obtaining access to site with no overhead wires within 20' of the
holes. Cascade Drilling shall not be responsible for damages to underground improvements not clearly and accurately marked. If bedrock, cobbles, flowing sands or other
adverse or unsafe drilling conditions are encountered, drilling may continue on a time and materials basis or be terminated at the discretion of Cascade. Additional costs may
apply if scope is significantly changed. Well development by others may void some or all of Cascade warranties of workmanship and materials. Prices assume standard
labor rates and no work hour restrictions.
Utah: 5718 W AXEL PARK RD, WEST JORDAN UT 84081 ♦ [phone]
$10,425.00
20-1339913 | www.directpushservices.com
Direct Push Services LLC
PO Box 25784
Salt Lake City, UT 84125
[phone]
[e-mail]
Estimate
ADDRESS
Stantec Consulting
2890 East Cottonwood
Parkway, Suite 300
Salt Lake City, UT 84121
ESTIMATE #240397
DATE 12/27/2024
EXPIRATION DATE 03/31/2025

P.O. NUMBER SALES REP
7-Eleven 47151/Speedway 9414 Sean Bromley
DATE ACTIVITY QTY RATE AMOUNT
7822 Direct Push Rig/Tooling 2 2,250.00 4,500.00
Mob/Demob Drill rig 2 200.00 400.00
Decon 2 150.00 300.00
Daylighting 0-8' and 10% of casing diameter.4 650.00 2,600.00
55 Gallon drum 6 130.00 780.00
MC 60 in PVC liner 12 15.00 180.00
2" monitoring wells with 10' screen at 15'. Complete with
sand, bentonite, 8" flush mount, 2x2 concrete pad around
each
4 850.00 3,400.00
Asphalt cutting for 2x2 pads 3 225.00 675.00

7-Eleven 47151/Speedway 9414 located at 1344 Fort Union
Blvd, Cottonwood Heights.
-Advancement of 4 direct push borings and completion of each as
a monitoring well.
-Asphalt coring for 3 out of 4 locations (one location will be in
landscaping).
-Borehole clearance to 8 ft bgs and 110% of auger diameter.
-Boring depth will be approximately 18 ft.
-Continuous soil core samples via acetate sleeves.
-2-inch diameter monitoring wells set at 15 ft.
Schedule 40 PVC casing and 10 ft of 10 slot screen.
10/20 silica sand filter pack across the screened interval to 2 ft
above the screen. The remainder of the annulus should be
backfilled with bentonite chips to 1 ft bgs. Surface completions of
8-inch diameter steel vault set flush with grade and 2x2-foot
diameter concrete pad.
Contain all investigation derived waste in 55-gallon drums
TOTAL $12,835.00

3110 W. California Ave., suite D
Salt Lake City, UT  84104
[phone]    ettechusa.com

Estimate
ESTIMATE #1038290615
DATE
PO #
CUSTOMER
Stantec Consulting
Anna Skinner
3995 S 700 East, suite 300
Salt Lake City, UT, 84107

[e-mail]

SERVICE LOCATION
Stantec Consulting
Speedway #9414
1344 E Fort Union Blvd
Salt Lake City, Utah, 84121-2860
[e-mail]
DESCRIPTION the below scope of work (SOW):
Advancement of 4 direct push borings and completion of each as a monitoring well.
- Asphalt coring for 3 out of 4 locations (one location will be in landscaping).
- Borehole clearance to 8 ft bgs and 110% of auger diameter.
- Boring depth will be approximately 18 ft.
- Continuous soil core samples via acetate sleeves.
- 2-inch diameter monitoring wells set at 15 ft.
o Schedule 40 PVC casing and 10 ft of 10 slot screen.
o 10/20 silica sand filter pack across the screened interval to 2 ft above the screen.
o The remainder of the annulus should be backfilled with bentonite chips to 1 ft bgs.
- Surface completions of 8-inch diameter steel vault flush with grade and 2-foot diameter concrete pad.
- Appropriate number of 55-gallon drums for investigation derived waste.
Private utility locating will be provided by others.
Please include your available start date for this scope of work with your bid.
** First available start date is 1/15/2025
Estimate
Description Qty Rate Tax Total
Drill Crew
Operator + Helper
2.00 $2,800.00 $0.00 $5,600.00
Monitoring Well 4.00 $900.00 $0.00 $3,600.00
Drums 1.00 $150.00 $0.00 $150.00
HydroVac Subcontractor 1.00 $2,500.00 $0.00 $2,500.00
CUSTOMER MESSAGE  Estimate Total:$11,850.00