DERR-2024-010590

1
UNDERGROUND STORAGE TANK PERMANENT CLOSURE NOTICE (rev. 2/1/15) FACILITY ID# 1000078 .
…
State Use Only
Date Processed by
Date Mailed to LHD
LUST ID#
Date to LUST Review

Closure Notice prepared at the request of the owner/operator (identified below) by David Hansen
of (company name) Rockwell Solutions, Inc Phone # [phone]
Address 718 E Bridger Lane City Elk Ridge StateUT Zip84651

TANKS CLOSED
Piping Only Tank #
Please complete for each tank 1 2 3
Type (Steel,FRP,etc.) Steel Steel Steel
Date Installed 5/8/90 5/8/90 5/8/90
Capacity (Gallons) 12,000 4,000 4,000
Substance stored* gasoline gasoline diesel
Date last operated 5/2022 5/2022 5/2022
Date Closed 5/29/24 5/29/24 5/29/24
Removed/In Place/ Change in
Service (CIS)? Removed Removed Removed
*Indicate the specific substance stored in each tank to be closed (regular, unleaded, diesel, waste oil, etc.)

CLOSURE INFORMATION
Fuel was emptied Sludge was removed Tank was cleaned
Tank was: Purged Inerted Method Used: Dry ice
Location of Closure Records: Rockwell Solutions
For In-Place Closure: tanks filled with:
For Change-In-Service: Substance to be stored:
FACILITY INFORMATION
Tank Owner Dipikaben V Patel Phone # [phone]
Address 920 W Center Street City Provo State UT Zip 84601
Facility Name Last Chance #6
Address 920 W Center Street City Provo State UT Zip 84601
Contact person Dipikaben Patel Phone # [phone]
Total number of regulated underground tanks at this site before closure 3
Total number of regulated underground tanks at this site after closure 0
TANK REMOVER Name David Hansen Cert. # TR0410 Exp. Date 1/1/26
Company Rockwell Solutions, Inc. Phone # [phone]
Address 718 E Bridger Lane City Elk Ridge State UT Zip 84651
SOIL/GROUNDWATER SAMPLER Name David Hansen Cert. # GS0842 Exp. Date 07/15/2024
Company Rockwell Solutions, Inc Phone # [phone]
Address 718 E Bridger Lane City Elk Ridge State UT Zip 84651
PKL6/19/2024
OKU
2
DISPOSAL SITES USED
Location Name Contact Name Phone # Date Amount
Tank(s) Western Metals Recycling scalehouse [phone] 5/30/24 Tank #1-
Product From Tank(s) Sump and Trap Shane Adolph 801-595-8151 5/29/24 60
Contaminated Water
From Tank Cleaning Sump and Trap Shane Adolph 801-595-8151 5/29/24 165
Sludge Sump and Trap Shane Adolph 801-595-8151 5/29/24 <10 gal
Contaminated Water
From Excavation none
Contaminated Soil none

SITE ASSESSMENT
Complete the Facility Site Plat (Closure Notice) and Sample Information Table (Closure Notice) on pages 3 and 4 to show the locations,
depths, and other information on all soil/groundwater samples taken for closure. The samples must be consistently identified by sample ID #
on the site plat, table, and lab analysis report.

Completed Facility Site Plat (Closure Notice) is attached.
The following must be included (enter the distance, and direction (N,S,E,W) from the area of contamination or, where applicable,
use OH for overhead, NP for not present):
20 E Water Line 20 E Sewer Line 70 NE Natural Gas 90 E Storm Drain OH Telephone OH Electrical 50 S Property Line 25 N Buildings
Completed Sample Information Table (Closure Notice) is attached.
Certified lab analytical environmental sample results are attached.
Unified Soil Classification (USC) sample results are attached.
Chain of Custody form is attached.
Samples were properly: Collected Labeled Packaged Transported
Samples were in sight of the person in custody at all times or in a secured locked place.

I certify under penalty of law that the closure site assessment at this facility was conducted in accordance with 40 CFR 280.52, 40
CFR 280.72, and R311-205 U.A.C., and that any additional samples required by 40 CFR 280.52, 40 CFR 280.72 and R311-205-2(a)(1)
were properly collected.

Signature of Certified Groundwater/Soil Sampler
Full name of Certified Sampler David Hansen Date

If contamination at the facility is confirmed, any person providing remedial assistance for a fee must be a Certified UST Consultant. The
Certified UST Consultant providing assistance is:

CERTIFIED UST CONSULTANT
Name David Hansen Cert. #CC 0130 Exp. Date 1/1/2026
Company Rockwell Solutions, Inc Address 718 E Bridger Lane
City Elk Ridge State UT Zip 84651 Phone # [phone]

Please explain any unusual circumstances that occurred during the site assessment or closure:
Onsite building will soon be demolished

6/14/24
3
Facility Site Plat (Closure Notice)
The site plat must be drawn to an appropriate identified scale. It must show planned sampling locations, substances stored in tanks, and
other relevant information. Tank and sample identification numbers must be consistent with the information given on p. 1 and 4 of the
Closure Notice.

Facility ID: Drawn By: Date:

X = Sample locations (SS-#, WS-#, USC-#) Site Plat Must Indicate Actual Locations Of:
0 = Monitoring Wells (MW-#) √ Current & former tanks, piping & dispensers
 = Soil boring (SB-#), or Geoprobe Boring (GP-#) √ Location of all samples to be taken
● = Water Wells (domestic, livestock, etc.) √ Buildings, fences, & property boundaries
Slope of Surface Topography: (N,NW,W,SW,S,SE,E,NE) √ Utility conduits (sewers, gas, water, storm drains, electrical, etc.)
Land Use At Site: Residential Commercial Industrial √ Depth to groundwater (if encountered)
Surrounding Land: Residential Commercial Industrial √Excavations, GW monitoring wells & soil stockpiles
North

Scale: 1”= Feet

4

SAMPLE INFORMATION TABLE (Closure Notice)
Complete table for all samples that were taken for closure. Sample ID numbers on the table must be consistent with the sample ID
numbers given on the site plat and in the lab analysis report.

1 Soil (SS), Groundwater (GW), or Unified Soil Classification (USC). 2 Final depth (in feet) below grade at which samples were taken. 3 Contaminant compound(s) analyzed for each sample (TPH, BTEXN, O&G, etc).
4 Appropriate analysis methods for contaminant compound(s) in each sample

State Certified Laboratory used Chemtech Ford Laboratory
Address 9632 South 500 West City Sandy State UT Zip 84070
Contact Person Mark Broadhead Phone # [phone]

I certify under penalty of law that I am the Owner of the tank(s) described above and that I am familiar with the information on this form
and that it is true, accurate and complete and further, that the procedures described herein were followed during tank closure.

Signature of UST owner
Full Name of owner Date

Return completed Closure Notice form, Facility Site Plat and Sample Information Table, Soil/Groundwater sample lab analysis results,
USC sample results, and Chain of Custody form within 90 days of UST Closure to:

Mailing Address State of Utah Dept. of Environmental Quality
DERR / UST Section
P.O. Box 144840 Salt Lake City, Utah 84114-4840

Sample
#
Substance
stored in tank
Sample
type1 Depth2 Compounds3 Analysis method(s)4
TB-N gasoline,diesel SS 10 MBTEXN, TPH-GRO, TPH-DRO 8260, 8015
TB-S same SS 10 same same
D-NW same SS 4 same same
D-NE same SS 3 same same
D-SE same SS 3 same same
D-SW same SS 3 same same
GW-N same GW 10 same same
GW-S same GW 10 same same
USC-1 same USC 10 Uniform Soil Classification field analysis
USC-2 same USC 3 same field analysis

Street Address
Multi Agency State Office Building 195 North 1950 West (First Floor)
Salt Lake City, Utah 84116

WaterGasSewer
NORTH
Sample Location Last Chance #6
910 W Center Street
Provo, UtahApprox. scale in feet
00 20
Figure 1 UST Closure Map
TB-N
GW-N
USC-1
TB-S
GW-S
D-NE
D-SE
TB-E
USC-2
D-NW
D-SW
USC-2
rWate
sGaSweer
St rm raino D
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
Rockwell Solutions, Inc
Attn: Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
Work Order: 24E2342
Project: Last Chance #6
6/6/2024
Approved By:
Mark Broadhead, Project Manager
9632 South 500 West Sandy, Utah 84070
Serving the Intermountain West since 1953
801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com
Page 1 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: TB-N, 10'
Lab ID: 24E2342-01Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 16:50
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800089.7Total Solids
MBTEXn
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/4/246/4/240.279 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2456EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 2 of 11Page 2 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: TB-S, 10'
Lab ID: 24E2342-02Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 16:30
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800092.3Total Solids
MBTEXn
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/4/246/4/240.02 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/4/246/4/240.02 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/4/246/4/240.02 EPA 8260D/5030BNDToluene
mg/kg dry 6/4/246/4/240.02 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/4/246/4/240.248 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2454EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 3 of 11Page 3 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: D-NW, 4'
Lab ID: 24E2342-03Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 17:20
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800087.4Total Solids
MBTEXn
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/4/246/4/240.298 EPA 8260B/C 5035A/[CALC]108Gasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2457EPA 8015 C4150Diesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 4 of 11Page 4 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: D-NE, 3'
Lab ID: 24E2342-04Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 17:25
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800087.7Total Solids
MBTEXn
mg/kg dry 6/5/246/5/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/5/246/5/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/5/246/5/240.264 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2457EPA 8015 C101Diesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 5 of 11Page 5 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: D-SE, 3'
Lab ID: 24E2342-05Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 17:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800085.3Total Solids
MBTEXn
mg/kg dry 6/5/246/5/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/5/246/5/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 6/5/246/5/240.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/5/246/5/240.262 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2459EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 6 of 11Page 6 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: D-SW, 3'
Lab ID: 24E2342-06Matrix: Solid
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 17:10
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
Inorganic
%6/4/246/4/240.1 CTF800078.4Total Solids
MBTEXn
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDBenzene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDEthylbenzene
mg/kg dry 6/4/246/4/240.01 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDNaphthalene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDToluene
mg/kg dry 6/4/246/4/240.03 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/kg dry 6/4/246/4/240.322 EPA 8260B/C 5035A/[CALC]NDGasoline Range Organics
Diesel Range
mg/kg dry 6/3/246/3/2464EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 7 of 11Page 7 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: GW-N
Lab ID: 24E2342-07Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 16:10
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 6/5/246/5/240.005 EPA 8260D/5030BNDBenzene
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/5/246/5/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDToluene
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/5/246/5/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/3/245/31/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 8 of 11Page 8 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
Sample ID: GW-S
Lab ID: 24E2342-08Matrix: Water
Flag(s)Units
Analysis
Date/Time
Date Sampled: 5/29/24 16:15
Preparation
Date/Time
Sampled By: David Hansen
Minimum
Reporting
Limit MethodResult
MBTEXn
mg/L 6/5/246/5/240.005 EPA 8260D/5030B0.022Benzene
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDEthylbenzene
mg/L 6/5/246/5/240.005 EPA 8260D/5030BNDMethyl tert-Butyl Ether (MTBE)
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDNaphthalene
mg/L 6/5/246/5/240.012 EPA 8260D/5030B0.035Toluene
mg/L 6/5/246/5/240.012 EPA 8260D/5030BNDXylenes, total
Gasoline Range
mg/L 6/5/246/5/240.125 EPA 8260B/C /5030A/[CALC]NDGasoline Range Organics
Diesel Range
mg/L 6/3/245/31/241.0 EPA 8015 CNDDiesel Range Organics
Project Name: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 9 of 11Page 9 of 11
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
Rockwell Solutions, Inc
Dave Hansen
718 East Bridger Lane
Elk Ridge, UT 84651
PO#:
Receipt:
Date Reported:
Project Name:
5/30/24 11:44 @ 4.1 °C
6/6/2024
Last Chance #6
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: Last Chance #6 CtF WO#: 24E2342
www.ChemtechFord.com
Page 10 of 11Page 10 of 11
Page 11 of 11
Last Chance #6, 920 W Center Street, Provo, Utah
UST No. 1000078
USC Results:
USC -1, 10 feet (TB-N): Sandy gravel and cobbles (GW), brown, damp
USC -2, 3 feet (D-SW): Sandy gravel and cobbles (GW), brown, damp