DERR-2025-002217

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
Rockwell Solutions, Inc.
718 E Bridger Lane
Elk Ridge, UT 84651
[phone]
March 21, 2025

Brett Gurney
Fuel Manager
Utah Department of Government Operations, Division of Fleet Operations, Fuel Network Program
4315 S 2700 West
Salt Lake City, Utah 84114

RE: Workplan for Groundwater Removal, Emergency Response OMW-1
Granite School District, 380 W Gregson Ave, Salt Lake City, Utah
Facility ID #4001328; Release OMW

Dear Mr. Gurney:

Rockwell Solutions, Inc. submits this work plan and budget to remove contaminated groundwater
discovered during underground storage tank (UST) removal activities at the above referenced site in
March 2025. PST Fund payment claims will reference this work plan and specific tasks itemized
below.

INTRODUCTION

The site is an active fueling facility for Granite School District. The underground storage tanks
(USTs) were removed in March 2025. During UST closure activities hydrocarbon concentrations
exceeded Tier 1 levels in groundwater samples collected from the UST basin. The water must be
removed as part of dewatering the tank basin excavation for installation of new USTs.
Hydrocarbon concentrations in all soil samples were less than Initial Screening Levels.

SCOPE OF WORK

Dewatering
Depth to groundwater is approximately six feet. Groundwater in the excavation will be continuously
pumped out into onsite frac tanks to allow installation of the new tanks. It is estimated that four or
five frac tanks will be used to remove approximately 80,000-100,000 gallons of contaminated
groundwater until the new USTs are installed.

Groundwater Treatment and Disposal
The water in the frac tank will be treated by passing it through a series of carbon filters. After
laboratory analysis confirms that the frac tank water meets disposal levels, the treated water will be
discharged to the storm sewer under a Utah Pollutant Discharge Elimination System (UPDES)
discharge permit from the Division of Water Quality, obtained by ET Technologies, the excavation
and dewatering subcontractor working on the project. Dewatering, treatment, and disposal will
require nearly continuous oversight to ensure pumps and filters are working properly.
Work Plan OMC-1, Soil and Groundwater Removal, Granite School District, Salt Lake City, Utah

Rockwell Solutions, Inc., 718 E. Bridger Lane, Elk Ridge, UT 84651 801-361-2930 [e-mail]
2

Reports
A final corrective action report will be prepared with analytical results documenting groundwater
removal, treatment, and disposal.

Future work
A subsurface investigation will be completed after UST installation where samples are collected around
and downgradient of the tank basin as well as from observation wells in the tank basin to define the
magnitude and extent of residual groundwater contamination.

KEY PERSONNEL

Professional Geologist, Project Manager: David Hansen
Field Scientist: Troy Spackman

SUBCONTRACTORS

 Groundwater Dewatering and Treatment: MSCI. MSCI was already under contract for soil
removal and dewatering with Granite School District prior to discovery of contamination.
Their subcontractor is ET Technologies. As all their equipment is already onsite, the work
is partially completed, and they have obtained the disposal permits, MSCI with ET
Technologies is considered the best contractor to complete the work and would be the least
expensive.
 Laboratory: Chemtech Ford

COST ESTIMATE

Rockwell Solutions, Inc. estimates the cost to complete the work as described in this work plan is
approximately $73,168.50. A detailed cost breakdown is presented in Table 1. The estimated
budget will require adjustment if the scope of services identified herein is modified.

Thank you for the opportunity to work with you on this project. If you have any questions or
concerns, please feel free to contact me at your convenience.

Sincerely,

David Hansen
Rockwell Solutions, Inc.
Certified UST Consultant CC130

cc: Hong Lei Tao, DERR
Task 1 - Work plan Development
LABOR
Hours Title Code Description Rate Total
1,760.00$ 1,760.00$
Total Task 1 1,760.00$
Task 2 - Soil and Groundwater Removal
LABOR
Hours Title Code Description Rate Total
3 professional geologist 102 senior management, oversight 157.00$ 471.00$
2 field scientist 104 field prep 109.00$ 218.00$
8 project manager 103 127.00$ 1,016.00$
30 field scientist 104 soil and gw removal oversight 109.00$ 3,270.00$
8 project manager 103 report preparation 127.00$ 1,016.00$
4 field scientist 104 data compilation 109.00$ 436.00$
1 professional geologist 102 report review 157.00$ 157.00$
2 PST Specialist 108 PST Claims 84.00$ 168.00$
1 clerical 109 general secretarial 66.00$ 66.00$
Subtotal 6,818.00$
SUBCONTRACTORS
Item Quantity Unit Rate Total
MSCI 1 lump sum 64,490.00$ 64,490.00$
Subtotal 64,490.00$
OTHER DIRECT COSTS
Item Quantity Unit Rate Total
150 miles 0.67$ 100.50$
Subtotal 100.50$
Total Task 2 71,408.50$
73,168.50$
Table 1
Granite School District, 380 W Gregson Ave, Salt Lake City, Utah
UST Facility #4001328; Release # OMW
Budget for Workplan OMW-1
mileage to/from site
coordination w RP, site owner, contractors
Total Work Plan
Soil and Groundwater Removal
work plan corrective action
Rockwell Solutions, Inc.
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