MO-0680_36553_CA_O_20230502

2501 Blue Ridge Road, Suite 430
Raleigh, North Carolina 27607
PH 919.870.0576
www.geosyntec.com
GN9168/CAR230103

2 May 2023
VIA E-MAIL

Daniel Bowser
North Carolina Department of Environmental Quality
Division of Waste Management
Underground Storage Tank Section
Corrective Action Branch
610 East Center Avenue, Suite 301
Mooresville, NC 28115

RE: Monitoring Well Abandonment
Former Univar Solutions USA Inc.
Hovis Road Facility
5010 Hovis Road
Charlotte, North Carolina 28208

Dear Mr. Bowser:

Geosyntec Consultants of NC, P.C. (Geosyntec) has prepared this letter on behalf of Southern
Concrete Materials, Inc. (SCM), and their partner Stevenson-Weir Southern (SWS) to notify the
North Carolina Department of Environmental Quality (NCDEQ), Division of Waste Management
(DWM), Underground Storage Tank (UST) Section of their intent to abandon monitoring wells at
the former Univar Solutions USA, Inc (Univar) Hovis Road Facility located at 5010 Hovis Road
in Charlotte, North Carolina (herein referred to as the “Subject Property” or “Site”).

SCM purchased the Subject Property in November 2022 and has plans to redevelop the Site as a
concrete batch plant with operations slated to begin in April 2024. In June 2022, prior to purchasing
the Site, SCM submitted a Brownfields Property application to the NCDEQ, DWM, Brownfields
Redevelopment Section (BRS). BRS issued a letter of eligibility (LOE) on September 29, 2022.
The Brownfields Property Identification Number for the Site is 26040-22-060. Construction of the
plant will be conducted under a BRS approved Environmental Management Plan (EMP).

Monitoring wells are located on the Site that were installed as part of UST release assessment
activities by Univar. Based on a review of grading plans, five of the monitoring wells (MW-3,
MW-04, MW-05, MW-7, and MW-8) will be in the way of construction and are planned to be
abandoned prior to construction. Additional protection measures will also be needed around
monitoring wells MW-1, MW-2, and MW-6, to protect them from redevelopment activities so they
Mr. Daniel Bowser
2 May 2023
Page 2

GN9168/CAR230103

can be used for monitoring in the future. Monitoring wells are depicted on the figure (prepared by
Arcadis) presented in Attachment A. Monitoring well construction detail is provided in the table
included in Attachment B.

For the monitoring well abandonment, Geosyntec will contract with a North Carolina-licensed
driller who will abandon the five monitoring wells in accordance with 15A NCAC 02C .0113 Well
Abandonment Standards and install up to three bollards around MW-1, MW-2, and MW-6.
Replacement of the abandoned monitoring wells can be completed following redevelopment in
2024, as needed or required.

A memorandum will be prepared for submittal to the UST Section following the completion of the
abandonment. The memorandum will document field observations made by Geosyntec personnel.
The memorandum will include well abandonment records prepared by the driller.

SCM has been in communication with Univar and their consultant, Arcadis, regarding upcoming
plans. They are aware of the proposed abandonment, and it is our understanding that Arcadis has
planned future monitoring events accordingly to accommodate the construction schedule. On
behalf of the Prospective Developer, Geosyntec respectfully requests your general
acknowledgement of the proposed plan described herein.

Should you have any questions or need additional information please do not hesitate to contact the
undersigned at [e-mail] or [phone].

Sincerely,

Vicki Garlington, P.G.(NC) Jeffrey Ahrens, P.E..(NC, NC, SC, FL, MI, WV)
Senior Geologist Senior Principal

Frank Stillo, Ph.D.
Project Scientist

cc: Ms. Caroline Goodwin, NCDEQ, DWM, BRS
Jeff Lamm, Southern Concrete Materials, Inc.
David Grossman, Stevenson-Weir Southern, Inc.
Mr. Daniel Bowser
2 May 2023
Page 3

GN9168/CAR230103

William Clark, Roberts & Stevens, P.A.
Mr. Mark Kleiman, Univar
Mr. William Anckner, Arcadis

Attachment A: Figure depicting monitoring wells
Attachment B: Well Construction Details

ATTACHMENT A
FIGURE DEPICTING MONITORING WELLS
APPROXIMATE LOCATION OF
FORMER NON-PETROLEUM USTS
CANOP
Y
5130 HOVIS ROAD, LLC
5130 HOVIS ROAD
EAL
HOLDINGS,
LLC
5100 HOVIS
ROAD
CROSCO
COMPANY
550 GULF DRIVE
FORMER
PERRY'S MOBILE
SERVICES
600 GULF DRIVEUNIVAR
5010 HOVIS ROAD
GULF DR
I
V
E
SYSTEM EQUIPMENT COMPOUND
MW-02
APPROXIMATE LOCATION OF
FORMER WASTEWATER UST
MW-1
1,1-DCA 156 [141 J]
1,1-DCE 124 [113 J]
1,2-DCA 33.8 [30.5 J]
1,2-DCP 62.6 [60.7 J]
2-Chlorotoluene 38.8 J [<10 UJ]
Chloroform 105 [96.5 J]
cis-1,2-DCE 229 [244 J]
PCE 256 [243 J]
TCE 570 [523 J]
MW-2
1,1-DCA 58.8
1,1-DCE 43.5
1,2-DCA 4.2
1,2-DCP 136
2-Chlorotoluene 112
PCE 39.5
TCE 139
MW-3
1,1-DCA 752 DJ
1,2,4-TCB 111
1,2-DCA 30
2-Chlorotoluene 2,710 DJ
PCE 4.9 J
Vinyl Chloride 2,580 EJ
MW-4
PCE 134
TCE 17.1
MW-5
Vinyl Chloride 3.8
MW-6
< NC 2L Standards
MW-7
1,1-DCA 232
1,1-DCE 33.1
1,2-DCA 17.3
cis-1,2-DCE 293
Vinyl Chloride 12.6
MW-8
1,1-DCA 11.7
PCE 217
TCE 26.6
Vinyl Chloride 6.5
MW-10
PCE 7.5
TCE 22.7
Vinyl Chloride 0.62 J
MW-11
1,1-DCA 116 J
1,1-DCE 75.4 J
2-Chlorotoluene 22,500 EJ
Chloromethane 52.7 J
cis-1,2-DCE 145 J
TCE 262 J
MW-12
1,1-DCA 10.4
1,1-DCE 130
1,2-DCP 74.3
1,4-DCB 15.8
2-Chlorotoluene 6,460 DJ
cis-1,2-DCE 277
TCE 93.3
MW-13
1,1-DCA 7.3
1,1-DCE 15.2
1,2-DCA 6.3
1,2-DCP 6.2
PCE 4.7
TCE 15.9
MW-17
1,1-DCA 8.4
1,1-DCE 7.3
1,2-DCA 3.4 J
cis-1,2-DCE 120
PCE 314
TCE 84.5
MW-18
< NC 2L Standards
MW-19
< NC 2L Standards
MW-1
MW-10
MW-11
MW-12
MW-13
MW-14
MW-15
(NS)
MW-16
MW-17
MW-2
MW-3
MW-4
MW-5
MW-6
MW-7
MW-8
MW-9
MW-19
MW-18
MW-20 MW-20
< NC 2L Standards
MW-14
2-Chlorotoluene 28,700 DJ
PCE 64.8 J
MW-9
< NC 2L Standards
MW-16
1,1-DCA 195
1,1-DCE 89.5
1,2-DCA 245
2-Chlorotoluene 1,090
cis-1,2-DCE 901
PCE 225
TCE 1,090
CHLORINATED COCS IN
GROUNDWATER – JUNE 2021
FORMER UNIVAR SOLUTIONS
HOVIS ROAD SITECHARLOTTE, NORTH CAROLINA
FIGURE
8IMAGES: ARIAL.tifXREFS: X-BORDER-BLPROJECTNAME: ----C:\Users\byrappab8346\OneDrive - ARCADIS\BIM360 - OneDrive Sync Location\UPLOADED-BB-AUS-UNIVAR-FORMER UNIVAR SOLUTIONS-CHARLOTTE North Carolina\Project Files\2022\01-In Progress\01-DWG\GWM-2021Q2-F08-ANALYTICAL-NON COC.dwg LAYOUT: 8 SAVED: 12/16/2021 5:32 PMACADVER: 24.0S (LMS TECH) PAGESETUP: ---- PLOTSTYLETABLE: ARCADIS-US_STD-BW.CTB PLOTTED: 1/25/2022 11:34 AM BY: BYRAPPA, BYRAREDDY1.BASE MAP FROM AN AECOM FIGURE 4 TITLED "GROUNDWATER
CONTOUR MAP"DATED 02/27-2018.
2.ALL LOCATIONS ARE APPROXIMATE.
3.ALL UNITS ARE IN MICROGRAMS PER LITER (µg/L).
4.CONCENTRATIONS IN BRACKETS REPRESENT DUPLICATE SAMPLE
RESULTS.
5.BOLD = EXCEEDS NCAC 2L STANDARD
6.NCAC 2L STANDARD = 15A NCAC 02L.0202 GROUNDWATER STANDARDS.
7.ONLY ANALYTES DETECTED ABOVE THE NCAC 2L STANDARDS ARE
SHOWN IN THIS FIGURE..
8.J = CONCENTRATION IS ESTIMATED.
9.U = THE COMPOUND WAS ANALYZED FOR, BUT NOT DETECTED. THE
ASSOCIATED VALUE IS THE COMPOUND QUANTITATION LIMIT.
10.D = THE CONCENTRATION IS BASED ON A DILUTED SAMPLE ANALYSIS.
11.E = THE COMPOUND WAS QUANTITATED ABOVE THE CALIBRATION
RANGE.
12. NS = NOT SAMPLED.
NCAC 2L Standard
Constituent NCAC 2L Standard
1,1-DCA 6
1,1-DCE 7
1,2,4-TCB 70
1,2-DCA 0.4
1,2-DCP 0.6
1,4-DCB 6
2-Chlorotoluene 100
Chloroform 70
Chloromethane 3
cis-1,2-DCE 70
PCE 0.7
TCE 3
Vinyl Chloride 0.03
DCA - DICHLOROETHANE
DCB - DICHLOROBENZENE
DCE - DICHLOROETHENE
DCP - DICHLOROPROPANE
TCB - TRICHLOROBENZENE
TCE - TRICHLOROETHENE
PCE - TETRACHLOROETHENE

ATTACHMENT B
WELL CONSTRUCTION DETAILS