NC0089885_Permit Request_20191030

PROJECT NAME: Charlotte Metro Office Tower
Pump and Haul Permit
NOVA PROJECT NUMBER: 10705-3019020
TRANSMITTAL DATE: October 30, 2019
TO: North Carolina Department of
Environmental Quality
Mooresville, Regional Office
610 East Center Ave, Suite 301
Mooresville, NC 28155
WE TRANSMIT VIA:
(X) Hand Delivery ( )
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FOR YOUR:
(X) Approval ( )
() Use (X)
THE FOLLOWING:
() Contract Documents ( )
() Project Invoices ( )
1 I October 30, 2019 ( N/A
REMARKS: One (1) hard copy included.
SIGNE
COPIES TO: Edward Watson, NCDEQ via email
Derek Denard, NCDEQ via email
FROM: Mr. Keith Rice
NOVA Engineering & Environmental, Inc.
5104 Reagan Drive
Suite 8
Charlotte, North Carolina 28206
US Mail
Overnight or Standard Shipping
Distribution to parties
Review and Comment
Geotechnical Report
Lab Results
() Information
() Record
(X) Permit Request
() Change Order
Charlotte Metro Office Tower Construction Application for Pump and Haul
Permit
RECIEVED:
PROFESSIONAL I PRACTICAL I PROVEN
5104 Reagan Drive, Suite 8, Charlotte, North Carolina 28206
NOVA NC License C-2807
t. 980.321.4100 / f. 980.321.4099 / usanova.com

October 30, 2019
NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY
MOORESVILLE REGIONAL OFFICE
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28155
Subject: Application for a Pump and Haul Permit
CHARLOTTE METRO OFFICE TOWER CONSTRUCTION
Charlotte, North Carolina
NOVA Project Number 3019020
NOVA Engineering and Environmental, Inc. (NOVA), on behalf of Childress Klein, is requesting a
pump and haul permit be issued for water generated from dewatering operations during the
construction of a new high-rise office building. Once construction below the groundwater table
is completed, the collection and discharge of on -site water will be terminated.
The Subject Property consists of six (6) land parcels referenced by Mecklenburg Tax
Assessor's office as Property Identification Numbers (PINS) 12505302, 12505303,
1250304, 1250306, 1250307, and 125308 with corresponding addresses 522 South
College Street, 518 South College Street, 510_ South College Street, 509 South Tryon Street,
521 South Tryon Street, and 525 South Tryon Street, respectively. The Subject Property
encompasses a total of approximately 2.09-acres of active construction.
A previous Phase II Environmental Site Assessment performed by Anchor QEA dated April
2017 identified soil and groundwater impacts resulting from the historical use of the subject
Property as a garment cleaning facility, an automotive sales and repair facility, and an
automotive painting facility. Petroleum impacts to soils were reported in four (4) of the nine
(9) soil borings. Chlorinated solvents above NC DEQ 2L regulations were reported in the
groundwater samples in two (2) of the five (5) groundwater monitoring wells installed.
NOVA collected groundwater samples from three (3) of the on -site monitoring wells on May
30, 2019. The remaining two (2) monitoring wells were dry at the time of NOVA's May 2019
sample collection. The collected samples were analyzed for Volatile Organic Compounds
(VOCs) by United States Environmental Protection Agency (US EPA) Solid Waste (SW)-846
Method 8260D, Semi -Volatile Organic Compounds (SVOCs) by USEPA SW-846 Method 8270E,
Chlorinated Pesticides by USEPA SW-846 Method 8081, and Total and Dissolved Metals by
USEPA SW-846 Method 6010D and 7470A. Tetrachloroethylene (0.72-pg/L) and total
Chromium (0.029-pg/L, 0.020-pg/L, and 0.024-pg/L) were identified above NC DEQ 2L
regulatory standards. Dissolved Chromium was not detected above laboratory detection
limits.
PROFESSIONAL I PRACTICAL I PROVEN
5401 Reagan Drive, Suite 8, Charlotte, North Carolina 28202
t. 980.321.4100 / f. 980.321.4099 / usanova.com

Pump and Haul Permit Application October 30, 2019
South College Street and South Tryon Street NOVA Pro'ect Number 3019020
The project consists of the construction of a new high-rise office building located on six (6)
land parcels encompassing approximately 2.09-acres. Foundation construction will extend
below the groundwater table which will require dewatering for an estimated period of four (4)
months. The Subject Property owner, Duke Energy Carolinas, LLC, has submitted an
application to NC DEQ for a National Pollution Discharge Elimination System (NPDES) permit
for the encountered groundwater. The NPDES permit application is currently in the 30-day
public notice period and the draft permit is being reviewed by the stakeholders.
Under the pump and haul permit, dewatering pumps will be placed in the areas of excavation
with the water being routed to trailer mounted tanks prior to transport to Haz-Mat
Environmental Services, LLC (Haz~Mat) for disposal. A letter from Haz-Mat indicating they
are accepting of the groundwater generated during construction activities is included as an
attachment.
Applicant Information
Childress Klein
301 South College Street, Suite 2800
Charlotte, North Carolina 28202
[phone]
Attention: Mike Haney
E-mail: [e-mail]
Facility
Charlotte Metro Office Tower Construction
South Tryon Street and South College Street
Charlotte, North Carolina
Consultant
NOVA Engineering and Environmental, Inc.
5401 Reagan Drive, Suite 8
Charlotte, North Carolina 28202
[phone]
Attention: Keith Rice, Senior Geologist
E-mail: [e-mail]
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Based on similar construction projects from the Charlotte downtown area, it is estimated that
the dewatering pumps will produce a flow rate up to approximately twenty (20) gallons per
minute during work hours.
N OVA Page 2

Pump and Haul Permit Application October 30, 2019
South College Street and South Tryon Street NOVA Project Number 3019020
If you have any questions, or if we maybe of further assistance, please do not hesitate to contact
us.
Sincerely,
NOVA EBgineering and Environmental, Inc
V,
Keith Rice
Senior Geologist
Attachment: Haz—Mat Letter
Topographic Site Map
David E. Penalva, P.E
Branch Manager
OVA Page 3

October 21, 2019
Wait Fisher
Showalter Construction Company, Inc.
[e-mail]
Re; Charlotte Metro Groundwater
Dear Mr. Fisher,
Please allow this letter to serve as acceptance for any potential water generated from the Charlotte
Metro Project. Based on analysis from Prism Labs on 5/30/19 (Prism Work Order 9050492),this stream
would classify as an organic stream so Haz-Mat could take for solidification.
Haz-Mat will continue to look for other more cost effective options at approved Duke Disposal facilities,
but Haz—Mat can take for solidification.
Should you have any questions feel free to call or email (neilPhazmatnc.com) at your convenience.
Sincerely,
'Ne* z r
Pres dent
HAZ—MAT Environmental Services, LLC
PO Box 37392 . Charlotte, NC 28237 / 221 Dalton Ave. e Charlotte, NC 28206
[phone] Office . [phone] Fax

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TOPOGRAPHIC SITE MAP
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Chart Metro
SOURCE Design survey prepared by Stewart, N OVA Charlotte. Mecklenburg County, NC
dated February13, 2019
SCALE: Nett.Seale PRO'FESSIONAL I PRACTICAL I PROVEN NOVA Project Number 3019020
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