DERR-2024-009386

6952 South High Tech Dr., Ste. B
Midvale, Utah 84047
P [phone]
Terracon.com
Facilities | Environmental | Geotechnical | Materials 1
JULY 24, 2024
July 29, 2024
Mr. Mark Crim
Utah Department of Environmental Quality
Division of Environmental Response and Remediation
P.O. Box 144840
195 North 1950 West
Salt Lake City, Utah 84114-4840
RE:GFB-35-TER: Work Plan and Price for Quarterly Groundwater Monitoring with Reporting
Former Blanding Chevron
191 North Highway 191, Blanding, Utah
Facility Identification No. 5000247, Release ID GFB
Terracon Project No. AL067004
Dear Mr. Crim:
Terracon Consultants, Inc. (Terracon) is pleased to submit this Work Plan and Price to
conduct four groundwater sampling events at the Former Blanding Chevron (Facility ID
5000247, Release ID GFB), located at 191 North Highway 191, Blanding, Utah.
This Work Plan was prepared in response to the Work Assignment GFB-35-TER received by
Terracon. This work will be conducted under Terracon's contract (Contract Number 216383)
with the Division of Environmental Response and Remediation (DERR).
OBJECTIVE
Six underground storage tanks were removed from the site in June 1995. During excavation
and tank removal, petroleum impacted soil and groundwater was discovered. DERR has
been managing the site since the initial tank removal.
Groundwater monitoring began in 1998 and indicated impacted groundwater present in both
the shallow and deep aquifers on the site. Beginning in October 2006, light non-aqueous
phase liquid (LNAPL) was reported in both shallow and deep monitoring wells. Vacuum
recovery events were conducted at the site in 2008 to remove the LNAPL, and absorbent
socks were installed in deeper monitoring wells. Periodic sampling of the remaining
monitoring wells continued, with the most recent event in October 2019. The work plan
price provides an estimate of costs for the implementation of the work plan, which includes
quarterly groundwater monitoring, product removal, and reporting itemized per task. Each
Work Plan and Price for Groundwater Monitoring
Facility ID 5000247 Release ID GFB | Blanding, Utah
July 29, 2024 | Terracon Project No. AL067004
Facilities | Environmental | Geotechnical | Materials 2
stage of the work plan is identified as a specific task or sub-task. Work performed under
each task or sub-task shall not commence without prior approval from the DERR.
SCOPE OF WORK
2.1 Task 1a Groundwater Monitoring Event, August 2024
Terracon will attempt to collect groundwater samples from nine existing monitoring wells
located at the site: Shallow wells MW-3B, MW-4B, and MW-8B, and deeper wells MW-3,
MW-4, MW-5, MW-7, MW-8, and MW-10. Terracon will measure the free product thickness
(if present) and depth to groundwater in each of the wells. Assuming free product is not
present, Terracon will purge each well, using either new disposable bailers or a peristaltic
pump with new tubing for each well. A Utah-certified Soil & Groundwater Sampler will
collect a sample when three casing volumes have been purged from each well. Quality
control samples consisting of a trip blank and a field blank (collected from the publicly
accessible faucet spigot from the Blanding City public access well as per previous events)
will be collected. This work plan assumes that purge water can be surface applied and
allowed to reinfiltrate or evaporate.
If free product is encountered, a petroleum absorbent sock will be placed in the well and will
be replaced at the following groundwater monitoring event. Previous sampling events
indicate that wells MW-3, MW-5, MW-7, and MW-3B had free product present. Disposal of
the used socks is included in this Scope of Work. This work plan assumes that the
petroleum absorbent socks can be dried out and disposed of as municipal waste.
Up to nine groundwater samples and two quality control samples (field blank and trip blank)
will be submitted to a Utah-certified analytical laboratory for analysis of methyl tertiary-
butyl ether, benzene, toluene, ethylbenzene, total xylenes, and naphthalene (MBTEXN)
using United States Environmental Protection Agency (EPA) Method 8260B, gasoline-range
total petroleum hydrocarbons (TPH-GRO) using EPA Method 8260B, and diesel-range total
petroleum hydrocarbons (TPH-DRO) using EPA Method 8015B. Water quality parameters will
not be collected.
2.2 Task 2a Groundwater Monitoring Report, September 2024
Upon completion of site activities and receipt of the laboratory analytical results, a report
will be prepared that will include the following.
documentation of field activities
site plan showing pertinent site features
analytical laboratory results
historical and newly obtained groundwater data
Work Plan and Price for Groundwater Monitoring
Facility ID 5000247 Release ID GFB | Blanding, Utah
July 29, 2024 | Terracon Project No. AL067004
Facilities | Environmental | Geotechnical | Materials 3
a groundwater gradient map (shallow and deep aquifers)
iso-concentration contour maps, where sufficient data is available.
data evaluation and presentation of findings
2.3 Task 1b Groundwater Monitoring Event, November 2024
Task 1b includes conducting a groundwater monitoring event at the site following the Scope
of Work outlined in Task 1a. Petroleum absorbent socks will be removed from the wells that
had free product in the prior monitoring event, if any, disposed of, and new petroleum
absorbent socks placed in the wells.
2.4 Task 2b Groundwater Monitoring Report, December 2024
Task 2b includes preparing a Groundwater Monitoring Report following the Scope of Work
outlined in Task 1b.
2.5 Task 1c Groundwater Monitoring Event, February 2025
Task 1c includes conducting a groundwater monitoring event at the site following the Scope
of Work outlined in Task 1a. Petroleum absorbent socks will be removed from the wells that
had free product in the prior monitoring event, if any, disposed of, and new petroleum
absorbent socks placed in the wells.
2.6 Task 2c Groundwater Monitoring Report, March 2025
Task 2c includes preparing a Groundwater Monitoring Report following the Scope of Work
outlined in Task 1b.
2.7 Task 1d Groundwater Monitoring Event, May 2025
Task 1d includes conducting a groundwater monitoring event at the site following the Scope
of Work outlined in Task 1a. Petroleum absorbent socks will be removed from the wells that
had free product in the prior monitoring event, if any, disposed of, and new petroleum
absorbent socks placed in the wells.
2.8 Task 2d Groundwater Monitoring Report, June 2025
Task 2d includes preparing a Groundwater Monitoring Report following the Scope of Work
outlined in Task 1b.
Work Plan and Price for Groundwater Monitoring
Facility ID 5000247 Release ID GFB | Blanding, Utah
July 29, 2024 | Terracon Project No. AL067004
Facilities | Environmental | Geotechnical | Materials 4
The services will be performed in a manner consistent with generally accepted practices
undertaken in similar studies in the same geographic area during the same period. Terracon
makes no warranties, expressed or implied, regarding its services, findings, conclusions, or
recommendations. Please note that Terracon does not warrant the work of laboratories,
regulatory agencies, or other third parties supplying information used in the preparation of
the report. These investigation services will be performed in accordance with the Scope of
Work agreed with you, our client, as set forth in this proposal and are not intended to be in
strict conformance with ASTM E1903-19.
WORK PLAN BUDGET
The proposed cost to perform this work is $8,174.90 per event for a total of
$32,699.60. For budgetary purposes, Terracon has assumed that all the wells will be
sampled. Petroleum absorbent socks have also been included in the budget. The actual
costs of the monitoring events will be billed to the client. An itemized budget spreadsheet is
attached, detailing the cost breakdown associated with each task. The cost estimate was
generated using Terracon's 2023 PST Fund approved labor rates.
If PST Fund Labor rates are changed, the Work Plan will be updated to reflect the new rates.
If conditions are identified that will substantially alter the proposed Scope of Work, Terracon
will notify DERR to discuss appropriate actions or modifications to this Work Plan. Terracon
will not exceed the estimated costs without prior approval from the DERR Project Manager.
ASSUMPTIONS
The following assumptions were made during preparation of this Work Plan and Price:
Terracon assumes that no site access issues will be encountered during the
investigation. In the event Terracon encounters difficulty with access to any of the
properties, DERR will be contacted immediately to determine appropriate courses of
action.
Terracon assumes that the monitoring wells proposed for sampling are in adequate
working condition with sufficient water column to allow sampling and are not
covered by asphalt or otherwise inaccessible.
For cost estimating purposes, Terracon assumes 11 groundwater samples will be
submitted to the analytical laboratory during each sampling event, one from each of
the nine wells plus one field blank and one trip blank.
Work Plan and Price for Groundwater Monitoring
Facility ID 5000247 Release ID GFB | Blanding, Utah
July 29, 2024 | Terracon Project No. AL067004
Facilities | Environmental | Geotechnical | Materials 5
If you have any questions or would like to make any modifications to the approach
described in this Work Plan and Price, please contact us at [phone].
Sincerely,
Terracon Consultants, Inc.
Andrew Turner Craig D. Eaton
Project Manager Authorized Project Reviewer
Certified UST Consultant #CC167
Attachment: PST Fund Cost Estimate Spreadsheet (with 2023 PST Fund Approved Rates)
PST Cost Estimate Spreadsheet
Project:Labor Catagories (2023 PST Fund Approved Rates)
Facility ID:0 P100 Principal $78 / hour
Release ID:1 P101 Senior Project Manager $62 / hour
Work Plan:2 P102 Pofessional Engineer/Geologist
Date:3 P103 Project Manager
4 P104 Field Scientist
5 P105 Senior Technician
6 P106 Field Technician
7 P107 Drafter
Hours By Labor Catagory
0 1 2 3 4 5 6 7 8 9 10
Task 1 - Quarterly Groundwater Sampling Event (Per Event)
1.5 1.0 2.5 $278.00 $278.00
Preliminaries (field preparation, equipment gathering)2.0 2.0 $202.00 $202.00
11.0 11.0 $1,111.00 $1,111.00
0.0 $0.00 $402.00 $402.00
1.0 1.0 $101.00 $101.00
3.0 3.0 $303.00 $303.00
12.0 12.0 $1,212.00 $1,212.00
0.0 $0.00 $110.00 $110.00
2.0 2.0 $202.00 $202.00
0.0 $0.00 $99.00 $99.00
0.0 $0.00 $90.00 $90.00
0.0 $0.00 $50.00 $50.00
0.0 $0.00 $214.00 $214.00
0.0 $0.00 $21.40 $21.40
0.0 $0.00 $88.50 $88.50
Per Diem (2 days @ $59/day - GSA 2024 rate; full day)0.0 $0.00 $118.00 $118.00
Sample delivery to laboratory 1.0 1.0 $101.00 $101.00
0.0 $0.00 $990.00 $990.00
0.0 $0.00 $99.00 $99.00
Subtotal $3,510.00 $2,281.90 $5,791.90
Task 2 - Report
2.0 9.0 3.0 4.0 1.0 19.0 $2,071.00 $2,071.00
0.25 1.0 2.0 3.25 $312.00 $312.00
Subtotal $2,383.00 $0.00 $2,383.00
TOTAL $5,893.00 $2,281.90 $8,174.90
TOTAL $32,699.60
Chemtech Ford (MBTEXN/TPH-GRO/TPH-DRO) [11 GW @ $90/sample][9 samples plus 2 QA/QC]
10% markup for subcontracted services (Lodging)
TOTAL COST FOR 4 QUARTERLY EVENTS
8 P108 PST Trust Fund Claim Specialist
Lodging (2 nights @ $107/night (2024 GSA rate)
Per Diem (2 days @ $44.25/day - GSA 2024 rate; first and last day)
Scope of Work:
Task Description
$101 / hour
9 P109 Administrative Assistant
10 P110 Technical Expert
$90 / hour
$73 / hour
Product / water interface probe (2 days @ $55/day)
$85 / hour
Total Costs
Total
Hours Total Labor ODCs
Fieldwork/sampling (2 hr per 2" well >60 feet deep) (MW-3, MW-4, MW-5, MW-7, MW-8, and MW-10)
Fieldwork/sampling (1.5 hr per 4" well ≤30 feet deep) (MW-3B and MW-4B)
$169 / hour
$152 / hour
$147 / hour
$118 / hour
Former Blanding Chevron
5000247
GFB
GFB-35-TER
7/24/2024
Invoice review, reimbursement request
COST PER QUARTERLY EVENT
Quarterly Groundwater Monitoring With Reporting - Four Quarters
Report preparation, tables, exhibits and review
Travel Time
Mileage 600 miles @ 2024 GSA Personally Owned Vehicle Rate of $0.67/mile
Fieldwork/sampling (1 hr per 2" well ≤30 feet deep) (MW-8B)
Sampling event coordination (scheduling, field staff coordination; HASP/kick-off)
10% markup for subcontracted services (Chemtech Ford)
Data Reduction / Paperwork (1 hour per day)
Disposable bailers (9 @ $11 ea)
Sampling Supplies and Disposables (2 days @ $25/day)
Disposable petroleum sock
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