NC0089885_More Information (Received)_20190821

P R O F E S S I O N A L | P R A C T I C A L | P R O V E N
5401 Reagan Drive, Suite 8 , Charlotte, North Carolina 28202
t. 980.321 .4100 / f. 980 .321 .4099 / usanova.com

August 21, 2019

NCDENR – DIVISION OF WATER RESOURCES – NPDES COMPLEX PERMITTING UNIT
1617 Mail Service Center
Raleigh, North Carolina 27699

Subject: Engineering Alternative Analysis (EAA)
CHARLOTTE METRO OFFICE TOWER CONSTRUCTION
Charlotte, North Carolina
NOVA Project Number 2019008.1

NOVA Engineering and Environmental, Inc. (NOVA), on behalf of Childress Klein, is requesting a
NPDES 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.

BACKGROUND INFORMATION

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 correspondi ng 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 sub ject
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-µg/L) and total
Chromium (0.029-µg/L, 0.020-µg/L, and 0.024-µg/L) were identified above NC DEQ 2L
regulatory standards. Dissolved Chromium was not detected above laboratory detection
limits.
Engineering Alternative Analysis August 21, 2019
South College Street and South Tryon Street NOVA Project Number 2019008.1

Page 2
PROJECT DESCRIPTION

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.

Currently, dewatering pumps will be placed in the areas of excavation with the water being
routed through a pretreatment system prior to discharge into the municipal storm water
system located along South Tryon Street and South College Street. The storm drains discharge
to an unnamed tributary of Little Sugar Creek, part of the Sugar Creek watershed.

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

EEA Preparer
NOVA Engineering and Environmental, Inc.
5401 Reagan Drive, Suite 8
Charlotte, North Carolina 28202
[phone]
Attention: Keith Rice, Senior Geologist
E-mail: [e-mail]

ENGINEERING ALTERNATIVE ANALYSIS

Evaluation of potential restrictions to a wastewater discharge to surface waters

Based on review of Low-Flow Characteristics of Streams in North Carolina, published by the
USGS and issued in 1993 and the Low-Flow Characteristics and Flow-Duration Statistics for
Continuous-Record Stream Gaging Stations in North Carolina through 2012, published by the
USGS in 2015; Little Sugar Creek is a Class C (fishable/swimmable) water located within the
Catawba River Basin. The USGS reports provide the following information:

Engineering Alternative Analysis August 21, 2019
South College Street and South Tryon Street NOVA Project Number 2019008.1

Page 3
• Drainage Area – 40.80 square miles
• Summer/Winter 7Q10 – 34 cubic feet per second (cfs)
• 30Q2 Flow Statistics – 87 cfs
• W7Q10 Low-Flow Yield – 55 cfs
• Qavg Unit Flow Yield – 12 cfs/square mile

Little Sugar Creek is listed on the 303(d) as an impaired waterway. The total maximum daily
limits (TMDLs) include fecal coliform (9.4x1012 cfu/100mL), dissolved oxygen (no less than
5.0mg/l for the daily average and no less than 4.0mg/l for a minimum instantaneous value
during 7Q10 conditions), and turbidity.

NON-MUNICIPAL FLOW PROJECTIONS

Based on similar construction projects from the Charlotte downtown area, it is estimated that
the dewatering pumps will produce a flow rate of approximately 50 gallons per minute
(72,000 gallons per day).

EVALUATION OF FEASIBLE ALTERNATIVES

Alternative A: Connection to Existing Wastewater Treatment System
Ms. Sarah Daley, Environmental Compliance Supervisor with Charlotte Water sent a response
letter to NOVA on May 28, 2019 stating that they do not accept groundwater discharges as
referenced in the City of Charlotte Sewer Use Ordinance Section 23-79 (b)(14).

Alternative B: Land Application
Based on the proposed new construction occurring from approximately property boundary to
property boundary, on-site land application is not feasible due to the limitations of land area
available. Due to the location of the project within the downtown area of Charlotte, there is
limited land available in the vicinity of the Subject Property. Available land in th is area is
currently valued at approximately $5,000,000 to $10,500,000 per acre (supporting
information attached) making the purchase of land for the purpose of off-site land application
cost prohibitive. A table detailing the cost of off-site land application is included as an
attachment.

Alternative C: Infiltration Galleries
Based on the proposed new construction occurring from approximately property boundary to
property boundary, the use of on-site infiltration galleries is not feasible due to the limitations
of land area available. Due to the location of the project within the downtown area of
Charlotte, there is limited land available in the vicinity of the Subject Property. Available land
in this area is currently valued at approximately $5,000,000 to $10,500,000 per acre
(supporting information attached) making the purchase of land for the purpose of creating off-
site infiltration galleries cost prohibitive. A table detailing the cost of utilizing off-site
infiltration galleries is included as an attachment.
Engineering Alternative Analysis August 21, 2019
South College Street and South Tryon Street NOVA Project Number 2019008.1

Page 4
Alternative D: In-Situ Remediation Wells
Based on the proposed new construction utilizing dewatering pumps and the proposed new
construction occurring from approximately property boundary to property boundary, this
alternative is not feasible due to excess water entering the system and the limitation of on-
site land available.

Alternative E: Closed Loop Remediation Wells
Based on the proposed new construction utilizing dewatering pumps and occurring from
approximately property boundary to property boundary, this alternative is not feasible on-site
due to excess water entering the system and the limitation of on-site land available.
Additionally, there is limited land available in the vicinity of the Subject Property. Available
land in this area is currently valued at approximately $5,000,000 to $10,500,000 per acre
(supporting information attached) making the purchase of land for the purpose of installing
off-site injection wells cost prohibitive. A table detailing the cost of utilizing off-site closed loop
remediation wells is included as an attachment.

Alternative G: Discharge to Surface Waters
Discharging removed groundwater into the municipal stormwater system located along South
Tryon Street and South College Street is feasible for this project. Charlotte Water has approved
the use of the storm drain system as it is not anticipated to create hazardous conditions.

Neither Mecklenburg County nor City of Charlotte have returned a completed Local
Government Review Form. Consequently, the certified mail receipts and delivery tracking
information is attached as proof of delivery.

If you have any questions, or if we may be of further assistance, please do not hesitate to contact
us.

Sincerely,
NOVA Engineering and Environmental, Inc.

Jason K. Harris Keith Rice
Staff Geologist Senior Geologist

Attachments: Cost Analysis Table
Property Valuation Documentation
Certified Mail Receipts
Delivery Tracking Information

APPENDIX A

COST ANALYSIS TABLE

Land Aquisistion
Costs Equipment Costs Labor Costs Installation Costs Design Costs Total Capital Costs O&M Costs Laboratory Costs Operator Costs Residual Disposal
Costs Connection Fees Permit Fees Utility Cost Total Recurring
Cost
Land Application $70,000,000.00 $170,000.00 $95,000.00 $95,000.00 $50,000.00 $70,410,000.00 $6,750.00 $48,000.00 $50,000.00 None known None known None known $3,000.00 $107,750.00 $34,485,278.20
Infiltration Galleries $25,000,000.00 $20,000.00 $20,000.00 $20,000.00 $50,000.00 $25,110,000.00 $7,500.00 $48,000.00 $50,000.00 None known None known None known $1,500.00 $107,000.00 $12,331,863.46
Closed Loop Remediation Wells $25,000,000.00 $120,000.00 $30,000.00 $100,000.00 $50,000.00 $25,300,000.00 $7,500.00 $48,000.00 $50,000.00 None known None known $5,000.00 $3,000.00 $113,500.00 $12,427,957.81
O&M - Operation and Manitenance
* - Assumes a six (6) month operation period
PCVA
Capital Costs Recurring Costs*
Engineering Alternative
Charlotte Metro Office Tower Construction
Table 1: EAA COST ANALYSIS

APPENDIX B

PROPERTY VALUATION DOCUMENTATION

Chris Orr
[phone]
120 N Myers St
Charlotte, NC 28202 · 1.00 AC · Land For Sale
$4,995,000
Listing ID: 3875865 Date Created: 4 /7/2016 Last Updated: 6/19/2019
ABOUT 120 N MYERS ST , CHARLOTTE, NC 28202
Price $4,995,000 Building Class C
Sale Type Investment Total Lot Size 1.00 AC
No. Lots 1 Zoning Description MUDD
Property Type Land APN / Parcel ID 080-098-02
Property Sub-type Commercial Cross Streets E 5th St
Proposed Use Commercial
1 LOT AVAIL ABLE
Lot 08009802
Price $4,995,000 Lot Size 1.00 AC
SALE NOTES
Seller looking for JV opportunities. One acre that can be expanded
One acre of MUDD zoned land in Downtown Charlot te. Located at the corner of 5th and Myers with easy access to the new Trolley.
Ideal for Office, Retail, Multifamily, or Data Center. Owner is open to a sale, and can develop for any use.
Located at the corner of 5th and Myers in Downtown Charlotte
DEMOGRAPHICS 1 mile 
HO USEHOLD INCOME
$0K -
$35K
29.…
$35K
-
$75K
28.…
$75K
-
$10…
12.…
$10…
30.…
$106,191
Average
AGE DISTRIBUTION
0 -
19
20%
20 -
29
17.…
30 -
39
25.…
40 -
49
15.1…
50 -
64
13.…
65+
7.7%
35
Average
TR ADE AREA S 1 mi 3 mi 5 mi 15 min drive 
Map data ©2019Report a map error
1 MILE 3 MILE 5 MILE
Total Population 30,843 139,1 10 290,147
2010 Population 17,055 93,917 223,964
2024 Population 35,1 17 155,609 319,975
Employees 68,383 157,071 245,812
Total Businesses 4,843 13,460 21,371
Average Household Income $106,191 $95,100 $82,997
Median Household Income $76,409 $64,758 $52,979
Total Consumer Spending $406.46M $1.5B $2.8B
Median Age 34.4 34.8 35.1
Households 16,355 63,330 122,848
Percent College Degree or Above 36%28%23%
Average Housing Unit Value $451,913 $440,622 $367,650
TRANSIT/SUBWAY DRIVE WALK DISTANCE
Charlot te Transpor tation Center /Arena Transit Stop
(Charlotte Trolley, LYNX Blue Line)
2 min 10 min 0.5 mi
7th Street Transit Stop (Charlotte Trolley, LYNX Blue Line)2 min 11 min 0.5 mi
9th Street Transit Stop (Charlot te Trolley)3 min 14 min 0.7 mi
3rd Street Transit Stop (Charlot te Trolley, LYNX Blue Line)3 min 14 min 0.7 mi
Stonewall Transit Stop (Charlotte Trolley, LYNX Blue Line)2 min 18 min 0.9 mi
AIRPORT DRIVE DISTANCE
Charlot te Douglas International Airpor t 17 min 8.4 mi
84
Very Walkable
WALK SCORE ®
82
Excellent Transit
TR ANSIT SCORE ®
72
Very Bikeable
BIKE SCORE ®
MAP OF 120 N MYERS ST CHARLOTTE, NC 28202
The LoopNet service and information provided therein, while believed to be accurate, are provided "as is". LoopNet disclaims any
and all representations, warranties, or guarantees of any kind.
Scott Mladenik
[phone]
Justin Day
[phone]
217 W Dunbar St
Charlotte, NC 28203 · Office (Under Contract)
$525,000
Listing ID: 14307446 Date Created: 11/6 /2018 Last Updated: 7/9/2019
THE OFFERING
Price $525,000 Lot Size 0.05 AC
Sale Type Investment or Owner User Rentable Building Area 913 SF
Sale Conditions Deferred Maintenance No. Stories 1
Property Type Office Year Built 1917
Property Sub-type Office /Residential Zoning Description UMUD
Building Class C APN / Parcel ID 073-063-09
ABOUT 217 W DUNBAR ST , CHARLOTTE, NC 28203
+/-0.051 acre parcel near BofA stadium and Uptown Charlotte on W. Dunbar St. The parcel does have a
+/-913 sf home. Built in 1917, Value is in the land for development.
HIGHLIGHTS
Just outside of Uptown and 277
Less than 1,500' from BofA Stadium entrance
Great piece for redevelopment project on this street
Utilities to site
UMUD Zoning
MARKETING BROCHURE
INVESTMENT SUMMARY
+/-0.051 acres on W. Dunbar Street in very close proximity to Uptown Charlot te with UMUD zoning. The +/-913sf home on the
parcel is not likely to be used due to deferred maintenance, and is probably best torn down and this lot utilized as assemblage for a
larger project.
DEMOGRAPHICS 1 mile 
HO USEHOLD INCOME
$0K -
$35K
23.…
$35K
-
$75K
23.…
$75K
-
$10…
14.…
$10…
37.…$116,94 4
Average
AGE DISTRIBUTION
0 -
19
19.…
20 -
29
19.1…
30 -
39
26%
40 -
49
14.…
50 -
64
13.…
65+
8.2%
35.1
Average
TR ADE AREA S 1 mi 3 mi 5 mi 15 min drive 
Map data ©2019Report a map error
1 MILE 3 MILE 5 MILE
Total Population 22,177 129,630 265,076
2010 Population 1 1,366 86,715 200,006
2024 Population 25,397 145,135 293,079
Employees 61,384 152,609 245,790
Total Businesses 4,156 12,776 20,729
Average Household Income $1 16,944 $92,200 $84,182
Median Household Income $94,806 $62,347 $53,688
Total Consumer Spending $329.27M $1.4B $2.6B
Median Age 34.1 35.0 35.0
Households 12,535 59,183 1 13,229
Percent College Degree or Above 40%27%23%
Average Housing Unit Value $390,937 $407,479 $363,683
TRANSIT/SUBWAY DRIVE WALK DISTANCE
Morehead Transit Stop (Charlot te Trolley)2 min 8 min 0.4 mi
Carson Transit Stop (Charlotte Trolley, LYNX Blue Line)2 min 8 min 0.4 mi
Bland Street Transit Stop (Charlot te Trolley, LYNX Blue
Line)
2 min 12 min 0.6 mi
Stonewall Transit Stop (Charlotte Trolley, LYNX Blue Line)2 min 17 min 0.7 mi
3rd Street Transit Stop (Charlot te Trolley, LYNX Blue Line)2 min 16 min 0.8 mi
AIRPORT DRIVE DISTANCE
Charlot te Douglas International Airpor t 15 min 7.1 mi
64
Somewhat Walkable
WALK SCORE ®
71
Excellent Transit
TR ANSIT SCORE ®
67
Bikeable
BIKE SCORE ®
MAP OF 217 W DUNBAR ST CHARLOTTE, NC 28203
ADDITIONAL PHOTOS
GIS 20181010_100326
20181010_100403
The LoopNet service and information provided therein, while believed to be accurate, are provided "as is". LoopNet disclaims any
and all representations, warranties, or guarantees of any kind.
Ronald Berry
[phone]
The Celeste Group,
LLC
205 N Myers St
Charlotte, NC 28202 · 0.50 AC · Land For Sale
$3,000,000
Listing ID: 12802494 Date Created: 6 /8 /2018 Last Updated: 7/23 /2019
ABOUT 205 N MYERS ST , CHARLOTTE, NC 28202
Price $3,000,000 Property Sub-type Commercial
Sale Type Investment Proposed Use Commercial
Sale Conditions Build to Suit Total Lot Size 0.50 AC
No. Lots 1 Zoning Description URC
Property Type Land APN / Parcel ID 080-085-03
1 LOT AVAIL ABLE
Lot 08008503
Price $3,000,000 Lot Size 0.50 AC
Great lot for redevelopment. Would be ideal for Mulit-Family, Data Centers, and Retail. Zoning can
be changed to UMUDD after a review with Charlot te City Planning..
DESCRIPTION
Proper ty located in the prime uptown area of Charlotte, NC. Easy access to key areas of Charlotte. Great
development oppor tunity.
HIGHLIGHTS
Great proximity to key Charlotte, NC Uptown sites
MARKETING BROCHURE
SALE NOTES
Prime real estate in uptown Charlotte, NC. Near the Spectrum Arena and shor t drive to Bank of America Stadium, NASCAR Hall of
Fame.
DEMOGRAPHICS 1 mile 
HO USEHOLD INCOME
$0K -
$35K
29.…
$35K
-
$75K
28.…
$75K
-
$10…
12.…
$10…
30.…
$105,925
Average
AGE DISTRIBUTION
0 -
19
20%
20 -
29
17.…
30 -
39
25.…
40 -
49
15.1…
50 -
64
13.…
65+
7.6%
35
Average
TR ADE AREA S 1 mi 3 mi 5 mi 15 min drive 
Map data ©2019Report a map error
1 MILE 3 MILE 5 MILE
Total Population 30,723 138,321 291,682
2010 Population 16,949 93,217 225,030
2024 Population 34,987 154,754 321,687
Employees 68,167 157,159 245,124
Total Businesses 4,768 13,465 21,319
Average Household Income $105,925 $94,674 $82,721
Median Household Income $76,219 $64,486 $52,708
Total Consumer Spending $404.29M $1.5B $2.8B
Median Age 34.3 34.8 35.1
Households 16,302 62,967 123,371
Percent College Degree or Above 36%28%22%
Average Housing Unit Value $449,030 $438,330 $367,222
TRANSIT/SUBWAY DRIVE WALK DISTANCE
Charlot te Transpor tation Center /Arena Transit Stop
(Charlotte Trolley, LYNX Blue Line)
2 min 10 min 0.5 mi
7th Street Transit Stop (Charlotte Trolley, LYNX Blue Line)2 min 10 min 0.5 mi
9th Street Transit Stop (Charlot te Trolley)3 min 13 min 0.7 mi
3rd Street Transit Stop (Charlot te Trolley, LYNX Blue Line)3 min 14 min 0.7 mi
Stonewall Transit Stop (Charlotte Trolley, LYNX Blue Line)3 min 18 min 0.9 mi
AIRPORT DRIVE DISTANCE
Charlot te Douglas International Airpor t 17 min 8.4 mi
85
Very Walkable
WALK SCORE ®
82
Excellent Transit
TR ANSIT SCORE ®
72
Very Bikeable
BIKE SCORE ®
MAP OF 205 N MYERS ST CHARLOTTE, NC 28202
ADDITIONAL PHOTOS
The LoopNet service and information provided therein, while believed to be accurate, are provided "as is". LoopNet disclaims any
and all representations, warranties, or guarantees of any kind.

APPENDIX C

CERTIFIED MAIL RECEIPTS

APPENDIX D

DELIVERY TRACKING INFORMATION

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CHARLOTTE, NC 28204 
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