20040763 Ver 1_COMPLETE FILE_20040511

MEMORANDUM
TO: John Dorney
Non-Discharge Branch
Regional Contact: Alan Johnson
WO Supervisor: 13ex Gleason
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name McDowell Creek Wastewater Treatment Plant
Project Number 04 0763
Recvd From APP
County Mecklenburg
County2
Region Mooresville
Received Date 5111104 Recvd By Region
Project Type

Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
ME
Type Type Impact Score Index Prim. Supp. Basin Req. Req.
-
F-12Ff-ore-sted O Y O N
F 1-115-(5) WSIV CA 30,833. 0.24 F_
F- 1
F- ?-
Stream IO Y O N 1 130,833. ( 20.00 1 1
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y (0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y 0 N
Recommendation: 0 Issue 0 Issue/Cond 0 Deny
Provided by Region: Latitude (ddmmss) Longitude (ddmmss)
Comments:
Staff did not visit the site. Impacts are 20 ft of stream and 0.236 acre of wetland for the
expansion of a wastewater treatment plant. The exapansion is a requirement of DWO due to the
current lack of ca aci y (ex?g 80% of capacity). Treatment plant catty will be expanded from
6 million to 12 million gallons/day).
The site is located in a racy, rg owing area (Huntersville and Cornelius). The plant is already
feeling _pressure from development (hence the ex ap nsion). A new school was constructed in the
area a couple of years ago. New subdivisions are already moving into the general area. Although
the area is still relatively "rural" , the development pressure is from both residential and commercial.
Where people go_ commercial development also follows.
Will defer to Raleigh for issuance and conditions,
cc: Regional Office
Central Office Page Number 1
? W A T Michael F. Easley, Governor
O
? O William G. Ross Jr., Secretary
G
O
00 North Carolina Department of Environment and Natural Resources
j [ Alan W. Klimek, P. E. Director
"I
C3 < Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
June 28, 2004
DWQ Project # 04-0763
Mecklenburg County
Page 1 of 4
Charlotte-Mecklenburg Utilities
Barry D. Shearin, P.E.
Chief Engineer
5100 Brookshire Blvd
Charlotte, NC 28216
Subject Property: McDowell Creek Wastewater Treatment Plant
Mecklenburg County
Approval of 401 Water Quality Certification with Additional Conditions
Dear Mr. Shearin:
You have our approval, in accordance with the attached conditions and those listed below, to
place fill within or otherwise temporarily mpact 0.236 acres of wetlands and 20 feet of streams
for the purpose of constructing the McDowell Creek Wastewater Treatment Plant expansion to
12 MGD at the subject property, as described within your application dated May 6, 2004 and
received by the N.C. Division of Water Quality (DWQ) on May 11, 2004. After reviewing your
application, we have decided that the impacts are covered by General Water Quality Certification
Numbers 3374. The Certification(s) allows you to use Nationwide Permit(s) 12 when issued by
the US Army Corps of Engineers (USACE). In addition, you should obtain or otherwise comply
with any other required federal, state or local permits before you go ahead with your project
including (but not limited to) Erosion and Sediment Control, and Non-discharge regulations.
Also, this approval to proceed with your proposed impacts or to conduct impacts to waters
as depicted in your application shall expire upon expiration of the 404 or CAMA Permit.
This approval is for the purpose and design that you described in your application. If you change
your project, you must notify us and you may be required to send us a new application. If the
property is sold, the new owner must be given a copy of this Certification and approval letter and
is thereby responsible for complying with all conditions. If total fills for this project (now or in
the future) exceed one acre of wetland or 150 linear feet of stream, compensatory mitigation may
be required as described in 15A NCAC 211.0506 (h). This approval requires you to follow the
conditions listed in the attached certification and any additional conditions listed below.
N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (httr)://h2o.enr.state.nc.us/ncwetlands)
Rne}mm?r Cnniinn }f• ?_R77_ROQ_L.`7AR
Charlotte-Mecklenburg Utilities:
Page 2 of 3
June 28, 2004:
The Additional Conditions of the Certification are:
1. Impacts Approved
The following impacts are hereby approved as long as all of the other specific and
general conditions of this Certification (or Isolated Wetland Permit) are met. No other
impacts are approved including incidental impacts:
Amount Approved
(Units) Plan Location or Reference
Stream 20 (feet) As shown on plan
404/CAMA Wetlands 0.236 (acres) As shown on plan
2. Erosion & Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all specifications
governing the proper design, installation and operation and maintenance of such Best
Management Practices in order to protect surface waters standards:
a. The erosion and sediment control measures for,the project must be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Sediment and Erosion Control Planning and Design Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion
control measures must be such that they equal, or exceed, the requirements specified
in the most recent version of the North Carolina Sediment and Erosion Control
Manual. The devices shall be maintained on all construction sites, borrow sites, and
waste pile (spoil) projects, including contractor-owned or leased borrow pits
associated with the project.
c. For borrow pit sites, the erosion and sediment control measures must be designed,
installed, operated, and maintained in accordance with the most recent version of the
North Carolina Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act.
3. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas
beyond the footprint of the impacts depicted in the Pre-Construction Notification. All
construction activities, including the design, installation, operation, and maintenance of
sediment and erosion control Best Management Practices, shall be performed so that no
violations of state water quality standards, statutes, or rules occur.
4. No Sediment & Erosion Control Measures w/n Wetlands or Waters
Sediment and erosion control measures shall not be placed in wetlands or waters to the
maximum extent practicable. If placement of sediment and erosion control devices in
wetlands and waters is unavoidable, they shall be removed and the natural grade restored
Charlotte-Mecklenburg Utilities:
Page 3 of 3
June 28, 2004:
within six months of the date that the Division of Land Resources has released the
project.
5. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or
applicable Buffer Rules, and any subsequent modifications, the applicant is required to
return the attached certificate of completion to the 401/Wetlands Unit, North Carolina
Division of Water Quality, 1650 Mail Service Center, Raleigh, NC, 27699-1650.
Violations of any condition herein set forth may result in revocation of this Certification and may
result in criminal and/or civil penalties. The authorization to proceed with your proposed
impacts or to conduct impacts to waters as depicted in your application and as authorized by this
Certification, shall expire upon expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved
wetland or stream impacts), you may ask for an adjudicatory hearing. You must act within 60
days of the date that you receive this letter. To ask for a hearing, send a written petition, which
conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, N.C. 27699-5714. This certification and its
conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean
Water Act. If you have any questions, please telephone Cyndi Karoly in the Central Office in
Raleigh at 919-733-9721 or Alan Johnson in the DWQ Mooresville Regional Office at 704-663-
1699.
Sincerely,
l
W. Klimek, P.E.
AWKljrd
Enclosures: GC 3374
Certificate of Completion
cc: John T. Bekmanis, Black and Veatch International; 8520 Cliff Cameron Drive, Suite 350,
Charlotte, NC 28269-0019
USACE Asheville Regulatory Field Office
DWQ Mooresville Regional Office
File Copy
Central Files
Filename: 040763McDowel lPlant(Mecklenburg)401
MEMORANDUM
TO: John Dorney Regional Contact: Alan Johnson
Non-Discharge Branch WQ Supervisor: Rex Gleason
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name McDowell Creek Wastewater Treatment Plant County Mecklenburg
Project Number 04 0763 I Sv g?
Recvd From APP
Received Date 5111104
Recvd By Region
County2
Region Mooresville
Project Type
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. ME
F 12 forested O Y O N F- 11-115-(5) ws1V cA 30,833. 0.24 ? F-
CBR Stream O Y O `N-????? 30,833. 20,00 F-
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y (W N Recommendation: 0 Issue 0 Issue/fond 0 Deny
Provided by Region: Latitude (ddmmss)
Comments:
Longitude (ddmmss)
Staff did not visit the site. Impacts are 20 ft of stream and 0.236 of wetland for the expans ion of
a wastewater treatment plant. The question is cumulative impacts due to the doubling of the plan t's
treatment capacity (6 million to 12 million gallons/day). Expansion is a DWQ requirement du e to
current useage.
The site is located in a rapedlyaro
wingarea (Huntersville and Cornelius). There is little do ubt t hat
?
increasing the treatment cagy and the extension of sewer service to the area will have an imp act
on the environment. A new school was constructed in the area a couple of years ago. New
subdivisions are already moving into the general area. Although the area is still relatively "ru ral" and
the development pressure currently is residential. Where people go. commercial developme nt al so
follows.
Will defer to Raleigh for issuance and conditions,
cc: Regional Office
Central Office Page Number 1
MEMORANDUM
TO: John Dorney Regional Contact:
Non-Discharge Branch WO Supervisor:
Date:
SUBJECT: WETLAND STAFF REPORT AND RECOMMENDATIONS
Facility Name McDowell Creek Wastewater Treatment Plant
Project Number 04 0763
Recvd From APP
Received Date 5111104 Recvd By Region
Project Type
County Mecklenburg
County2
Region Mooresville
Certificates Stream Stream Impacts (ft.)
Permit Wetland Wetland Wetland Stream Class Acres Feet
Type Type Impact Score Index Prim. Supp. Basin Req. Req. BE
12 forested W-7-0 N F- ll-115-(5) WSIV CA 30,833. 0.24 F- F_ IF-
F- F CBR Stream PV O N F- F- --?? 30,833. F- 20.00
Mitigation Wetland
MitigationType Type Acres Feet
Is Wetland Rating Sheet Attached? 0 Y 0 N Did you request more info? 0 Y 0 N
Have Project Changes/Conditions Been Discussed With Applicant? 0 Y 0 N
Is Mitigation required? 0 Y QQ N Recommendation: 0 Issue 0 Issue/Cond 0 Deny
Provided by Region: Latitude (ddmmss)
Longitude (ddmmss)
Comments:
Staff did not visit the site. Impacts are 20 ft of stream and 0.236 acre of wetland for the
expansion of a wastewater treatment plant. The exapansion is a requirement of DWO due to the
current lack of capacity (ex?g 80% of capacity). Treatment lap nt cagy will be expanded from
6 million to 12 million gallons/days.
_ The site is located in a rapidly orrowing area (Huntersville and Cornelius). The plant is already
feeling pressure from development (hence the expansion), A new school was constructed in the
area a couple of years ago. New subdivisions are already moving into the general area. Although
the area is still relatively `r, ural" , the development pressure both residential and commercial. Where
people go commercial development also follows.
Will defer to Raleigh for issuance and conditions.
cc: Regional Office
Central Office Page Number 1
04-0763
Subject: 04-0763
From: Alan Johnson <[e-mail]>
Date: Tue, 13 Jul 2004 11:02:09 -0400
To: [e-mail]
McDowell creek WWTP expansion, issue from raleigh. This is a required
expansion by DWQ because of capacity issues. Already exceeding 80%
capacity. 04 0763
Alan Johnson - [e-mail]
%TITLEa
North Carolina Dept. of Environment & Natural Resources
Div. of Water Quality
919 N. Main St.
Mooresville, NC 28115
Ph: [phone] Fax: [phone]
Alan Johnson <[e-mail]> '
%TITLE%
NC DENR - Mooresville
Div. of Water Quality
1 of 1 7/13/04 11:32 AM
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Triage Check List
Date: !5. VI - oy
Project Name: ?'???v?&4L Cr"* (--X-TZP C'x ?;?-
DWQ#: 04 - 0-443
County: Mecktw.b?25.
To: ? ARO
? FRO
MRO
? RRO
From:
Mike Parker ? WaRO Tom Steffens
Ken Averitte ? WiRO Noelle Lutheran
an Johnson ? WSRO Daryl Lamb
Steve Mitchell
Telephone : (919) i33-q-+XG
The file attached is being forwarded to your for your evaluation.
Please call if you need assistance.
? Stream length impacted
? Stream determination
? Wetland determination and distance to blue-line surface waters on USFW topo maps
? Minimization/avoidance issues
? Buffer Rules (Neuse, Tar-Pamlico, Catawba, Randleman)
? Pond fill
? Mitigation Ratios
? Ditching
? Are the stream and or wetland mitigation sites available and viable?
? Check drawings for accuracy
Is the application consistent with pre-application meetings?
Cumulative impact concern
Comments: _b?,W. IJ(jQ ?,.A? d . a3(o ?? ?ewpww??! we ??
+l e,sks e... -A - a 1. {, 4w«w. F x ; . 4v,,?? c?.?r . cvc hN •'1 t - a+S 06-A W
- w? a Ww-OP ca.?,?-? ?o trd ?tC?tJ ,

Charlotte-Mecklenburg Utilities
Charlotte, North Carolina
McDowell Creek Wastewater Treatment Plant
Expansion to 12 mgd
PRE-CONSTRUCTION NOTIFICATION
APPLICATION FORM
May 2004 f 4 6
Owner: Charlotte-Mecklenburg Utilities
5100 Brookshire Boulevard
Charlotte, NC 28216
[phone]
Consultant: Black & Veatch International Company
8520 Cliff Cameron Drive, Suite 350
Charlotte, NC 28269
[phone]
B&V Project No. 97057.200, File F-1.0
?I
BLACK & VEATCH
8520 Cliff Cameron Drive Black & Veatch International Company
Suite 350
Charlotte, North Carolina 28269-0019 USA
Tel: [phone]
Fax: [phone]
Charlotte-Mecklenburg Utilities B&V Project 97057.200
McDowell Creek Wastewater Treatment Plant B&V File F-1.0
6, 2004
May
Expansion to 12 mgd tt`
Ms. Cyndi Karoly
401 Program Coordinator
NCDENR-Division of Water Quality
401/Wetlands Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Subject
Dear Ms. Karolv:
WETLANDS1401 GROUP
MA V
=: ? IOC
wAr . ()'JAL'; ? SEcr10
Pre-Construction Notification Application Form
On behalf of Charlotte-Mecklenburg Utilities (CMU), Black & Veatch (B&V) is submitting
seven (7) copies of a Pre-Construction Notification Application form along with supporting
documentation. A permit fee check in the amount of $200.00 is also included. We are
requesting that a 401 Water Quality Certification be issued upon review of this application. In
addition, one (1) copy of this application form and supporting documentation is also being sent
to the U.S. Army Corps of Engineers Regulatory Field Office in Asheville for a Section 404-
Nationwide 12 permit review.
We appreciate your assistance during this review process. Please contact me if you have any
questions at [phone]or by email at [e-mail].
Very truly yours,
BLACK & VEATCH
?AY?V?i 't, INTERNATIONAL COMPANY
i'A ECEIVL"l)
n T. Bekmanis, P.E.
/01
Project Engineer
McD2/jhb
Enclosure
cc: Tom Howard, CMU
Amanda Jones, USACE Asheville Regulatory Field Office
Dave Parker, B&V
Chris Reinbold, B&V
building a world of differenceT?

BLACK & VEATCH
8520 Cliff Cameron Drive
Suite 350
Charlotte, North Carolina 28269-0019 USA
Tel: [phone]
Fax: [phone]
Charlotte-Mecklenburg Utilities
McDowell Creek Wastewater Treatment Plant
Expansion to 12 mgd
Ms. Amanda Jones
Asheville Regulatory Field Office
U.S. Army Corps of Engineers
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
B&V Project 97057.200
B&V File F-1.0
May 6, 2004
Subject: Pre-Construction Notification Application Form
Dear Ms. Jones:
On behalf of Charlotte-Mecklenburg Utilities (CMU), Black & Veatch (B&V) is submitting one
(1) copy of a Pre-Construction Notification Application form along with supporting
documentation. We are requesting a Section 404-Nationwide 12 permit be issued upon review
of this application. In addition, seven (7) copies of this application form and supporting
documentation are being sent to the North Carolina Division of Water Quality's 401/Wetlands
Unit for 401 Water Quality Certification.
We appreciate your assistance during this review process. Please contact me if you have any
questions at [phone] or by email at [e-mail].
Very truly yours,
BLACK & VEATCH
INTERNATIONAL COMPANY
ohn T. Bekmanis, P.E.
Project Engineer
McD2/jhb
Enclosure
cc: Tom Howard, CMU (w/enclosure)
Cyndi Karoly, NCDENR-DWQ
Dave Parker, B&V
Chris Reinbold, B&V
Black & Veatch International
building a world of difference-

Office Use Only: Form Version May 2002
P 0
76
USACE Action ID No. DWQ No(if any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)

1. Processing
1. Check all of the approval(s) requested for this project:
' ® Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
' ® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: Nationwide 12
' 3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here: ?
' 4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
' section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
' II. Applicant Information
1. Owner/Applicant Information
' Name: Charlotte-Mecklenburg Utilities, Barry D. Shearin, P.E. (Chief Engineer)
Mailing Address: 5100 Brookshire Boulevard
Charlotte, North Carolina 28216

Telephone Number: [phone] Fax Number: [phone]
' E-mail Address: B Shearin2ci. charlotte. nc. us
' 2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Black & Veatch International Company
Company Affiliation: Engineer/Architect, David M. Parker, P.E. (Project Manager)
' Mailing Address: 8520 Cliff Cameron Drive, Suite 350
Charlotte, North Carolina 28269

Telephone Number: [phone] Fax Number: [phone]
E-mail Address: ParkerDMAbv.com
e
Page 5 of 12

Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: McDowell Creek Wastewater Treatment Plant - Expansion to 12 mgd
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 01323105
4. Location
County: Mecklenburg Nearest Town: Huntersville
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): I-85 to Beatties Ford Road,
North to Neck Road. WWTP Address: 4901 Neck Road. Huntersville NC 28078
5. Site coordinates, if available (UTM or Lat/Long): (NAD83) N:1422166 E:600406
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres):
111
7. Nearest body of water (stream/river/sound/ocean/lake): McDowell Creek
8. River Basin: Catawba
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at http://h2o.enr.state.nc.us/admin/map-/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: See attached narrative for this description.
Page 6 of 12
0

10. Describe the overall project in detail, including the type of equipment to be used:
' See attached narrative for this description.
' 11. Explain the purpose of the proposed work:
See attached narrative for this description
1
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
' the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
' buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
No previous permits have been obtained for this project.
' V. Future Project Plans
' Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
' There are no future permit requests that will involve impacts to wetlands for this project.
' VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
' and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
' evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 7 of 12

r

1. Provide a written description of the proposed impacts:
See attached narrative for this description.
2. Individually list wetland impacts below:
Wetland Impact Area of Located within Distance to
Site Number Type of Impact* Impact 100-year Floodplain** Nearest Stream Type of Wetland***
(indicate on ma) (acres) (es/no) (linear feet)

Temporary
I
Excavation 0.002 YES 600 forested wetland
2 Temporary
Excavation 0.064 YES 1400 forested wetland
Permanent
3 Grading and
Pl
t
f 0.170 YES Adjacent to forested wetland
acemen
o stream.
Protective Cover
* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at http://www.fema.g_ov_.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: 18 acres
Total area of wetland impact proposed: 0.236 acres
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact Length of Average Width Perennial or
Site Number Type of Impact* Impact Stream Name** of Stream Intermittent?
(indicate on ma) (linear feet) Before Impact (please seci )
I Temporary
Excavation
20
UT to McDowell Creek
2 ft.
Intermittent

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts and associated rip-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditch ing/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.gov. Several intemet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.mapquest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 20
Page 8 of 12
n

n

1

4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
(indicate on ma
)
Type of Impact* Area of
Impact

(acres)
(if Name applicable) Wateplicabllee) Type of Waterbody
(lake, pond, estuary, sound,

bay, ocean, etc.)
N/A N/A N/A N/A N/A

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
flooding, drainage, bulkheads, etc.
VII.

5. Pond Creation (3 ponds are to be created on site.)
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ® uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Excavation along with an embankment/dam with outlet
Structure (dry pond).
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Local stormwater requirement per the Town of
Huntersville.
Size of watershed draining to pond: See Narrative Expected pond surface area: See Narrative
Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
See attached narrative for this description.
' VIII. Mitigation
r DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
' freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 9 of 12

J

?JI

USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o.enr.state.nc.us/ncwetlands/strmgide.html.
1. Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
See attached narrative for description.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wrp/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): N/A
Amount of buffer mitigation requested (square feet): N/A
Amount of Riparian wetland mitigation requested (acres): N/A
Amount of Non-riparian wetland mitigation requested (acres): N/A
Amount of Coastal wetland mitigation requested (acres): N/A
Page 10 of 12

F
' IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
' (federal/state) land?
Yes ® * No ? *Funding is local through City of Charlotte.
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
I coordinator at [phone] to review current thresholds for environmental documentation.
Yes ® No ?
' If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ® No ?
' X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)

I

It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone * Impact
(square feet)
Multiplier Required
Mitigation
1 N/A 3 N/A
2 N/A 1.5 N/A
Total N/A N/A N/A
* Zone 1 extends out 30 feet perpendicular from near bank of channel; Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page I 1 of 12

I

I
I
I

I
I
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 2B .0242 or .0260.
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
See attached narrative for this description. Specifically refer to section regarding stormwater
detention ponds.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
Any wastewater generated from the project will be treated by the facilities onsite and will be
discharged to McDowell Creek in compliance with NPDES permit. The capacity of the plant
will expand capacity from 6 mgd to 12 mgd.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
' construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
' Threatened Species, accessibility problems, or other issues outside of the applicant's control).
N/A

.3/z9/oy
Applicant/Agent's Signature Date
' (Agent's signature is valid only if an authorization letter from the applicant is provided.)
1 Page 12 of 12

Project Summary
Charlotte-Mecklenburg Utilities
McDowell Creek Wastewater Treatment Plant
Expansion to 12 mgd
Wetlands and Water Quality Certification
Permit Application Narrative
March 29, 2004
The McDowell Creek Wastewater Treatment Plant (WWTP) is a 6 million gallons
per day (mgd) facility operated by Charlotte-Mecklenburg Utilities (CMU) in northern
Mecklenburg County. The plant discharges to McDowell Creek, approximately 1/2-mile
upstream of Mountain Island Lake. An expansion of this facility is required to accommodate the
continued growth of the Charlotte-Mecklenburg area.
The property on which the McDowell Creek WWTP is located contains approximately
18 acres of wetlands. To expand the WWTP to 12 mgd to meet the demand of its service area,
the wetlands will be impacted in three locations. Two of the three impacts will be temporary,
and are required for the placement of underground piping. The third impact is permanent and
will include the placement of an underground pipe along with the construction of a protective
earth berm. All three of these impacts are required to successfully expand the plant capacity to
12 mgd.

I F

Existing Conditions and General Land Use
The wetlands that are to be affected in this project are classified as being generally open,
and have been disturbed in the past. The wetlands were disturbed in two distinct locations:
(1) installation of the existing influent gravity sewer line, and periodic maintenance of the
right-of-way for the sewer line and (2) installation of the existing effluent line, which was
originally placed with sufficient cover to protect the reinforced concrete pipe (RCP). The
existing effluent RCP is now exposed in several locations as floodwaters have removed much of
the protective cover. The protective berm from this existing RCP has served to back up
floodwater and likely increased the area and quality of the wetlands on site.
The wetland boundaries that exist on the drawings included with this application were
surveyed from the delineation marked by Chris Matthews of Habitat Assessment and Restoration

Program, Inc., in October of 2000. Furthermore, updated routine wetland determination data
' forms are included as recorded by John Soule of Habitat Assessment and Restoration Program,
Inc., (HARP), from December of 2003. Also, note on the drawings that the 100-year floodplain
marks the boundary for the Surface Water Improvement Management (SWIM) Program buffer
boundaries.
' The land surrounding the site is generally rural. The Rural Hill Nature preserve borders
the plant on the west and south, while the Auten Nature Preserve is to the south and east. The
land to the north and east of the plant is residential and used primarily for farming.
Overall Proiect Description and Purpose
The WWTP expansion project will expand the treatment capacity from 6 mgd up to
' 12 mgd. This will be accomplished by adding the following structures and processes:
1. A new headworks structure and influent pumping station.
2. Storm flow equalization basin and day tank basin.
3. Two new primary clarifiers.
' 4. Primary sludge pumping station.
5. Two new biological treatment trains.
' 6. New buildings for return sludge pumping and blower equipment.
7. Two new final clarifiers.
8. New effluent filters.
9. Membrane filtration building and reuse pumping station.
' 10. Filtrate equalization basin for dewatered sludge filtrate.
11. Additional ultraviolet disinfection.
' 12. One new anaerobic digester and control building.
13. Additional chemical feed facilities, including alum, lime, methanol, acetic acid, and
sugar water.
14. Storm water detention ponds.

These new structures and processes will be added in two phases as part of one overall
' constru ction project. The first phase will expand the plant from 6 mgd capacity to 9 mgd. The
second phase will expand the plant from 9 mgd to 12 mgd.

' 2
I
I
' Proposed Impacts to Waters of the United States
There are three areas of wetlands and one stream channel that are proposed to be
t disturbed as part of this project. These areas are listed in the table under item VI.2 and V1.3 of
the Application Form. These tables are duplicated below. These three areas are also identified
' and designated as areas 1, 2, and 3 on the attached site plans for the project. All three of these
areas of disturbance are for installation of utility pipelines.

Table 10-Proposed Wetland Impacts
Wetland Impact Area of Located within Distance to
Site Number Type of Impact* Impact 100-year Nearest Stream Type of Wetland***
(indicate on map) (acres) Floodplain** (yes/no) (linear feet)
I Temporary 0.002 YES 600 forested wetland
Excavation
2 Temporary 0.064 YES 1400 forested wetland
Excavation

3 Grading for
0.170
YES Adjacent to
forested wetland
Protective Cover stream.
Table 2-Pro posed Stream Impacts
Stream Impact Length of
Impact Average Width Perennial or
'
Site Number Type of Impact*
(linear Stream Name** of Stream Intermittent
?
(indicate on map)
feet Before Impact (please specify)
I Temporary
Excavation 20 UT to McDowell Creek 2 ft. Intermittent
The first wetland disturbance area and stream impact Area 1 is required for the
' installation of a 30-inch ductile iron pipe force main. This area is shown on attached drawings
133 (Overall Site Plant), 136 (Grading Plan), and 1310 (Piping Plan). This force main will connect
' the new headworks and influent pumping station to the first stage of primary treatment. This
will allow the influent wastewater to be pumped from the gravity sewer influent line to the
' primary clarifiers. This crossing will be made perpendicular to the stream, in an area where the
wetland and stream impacts may be minimized. The depth of bury for this line is approximately
' 3-feet at the location where it passes under the stream. An open excavation will be required to
3

1

install the force main. The intermittent stream, depending on its flow condition, may need to be
temporarily diverted or pumped around the excavation. Prior to excavation, the top 6-inches of
top soil will be removed and stockpiled onsite to be used to restore the seed bearing strata in the
wetland area after construction. The existing contours will be restored, and the stream bed will
be stabilized with gravel riprap. The disturbed stream banks will be matted, and beyond a 20-ft,
maintenance corridor will be live-staked per recommendations from James Matthews, Ph.D., of
HARP, Inc.
The second wetland disturbance area (Area 2) is required for the installation of two
parallel 48-inch ductile iron pipes to extend the gravity sewer line and tie in to the new
headworks and influent pumping station. This area is shown on the attached drawings B3
(Overall Site Plan), B5 and B6 (Grading Plan), and B9 and B10 (Piping Plan). The depth of bury
for these lines is approximately 8-feet at the location of the upstream manholes. Two manholes
will be installed and a 54-inch gravity interceptor will be installed a short distance and then
plugged for future use. The manholes and 54-inch gravity interceptor are not within the wetland
boundaries. The intermittent stream in this location does not have a defined channel; stream
flow at this point is distributed into the wetland areas so there is no defined stream to be
impacted. An open excavation will be required to install these pipe lines. A small temporary
structure will be used to divert any surface flow away from the excavation. Prior to excavation,
the top six-inches of top soil will be removed and stockpiled onsite to be used to restore the
wetland area. The contours will be restored to pre-construction conditions after the gravity main
installation. After restoring the grade to pre-construction conditions, the higher flow areas will
be stabilized with gravel riprap while the other disturbed areas will be amended with the
stockpiled top six-inches of top soil to restore the seed bearing strata.
The third wetland disturbance area (Area 3) is required for construction of a new effluent
discharge pipe to McDowell Creek. This area is shown on attached drawings B3 (Overall Site
Plan), B4 (Grading Plan), and B8 (Piping Plan). A 48-inch diameter ductile iron pipe will be
installed for approximately 160 feet total length within the, wetlands. The existing grade in the
area is relatively flat and low, and the pipe must discharge above the stream level of
McDowell Creek. Due to these limitations, the pipe will be installed in a shallow ditch to
maintain an adequate slope and will require protective cover to be placed over the pipe. Beyond
this protective cover, any disturbed area will be restored to pre-construction conditions; the top
4

J

six inches of top soil will be removed and stock piled onsite, the area will be graded to pre-
construction contours, and the stockpiled topsoil will be reapplied to replace the seed bearing
strata.
Impact Justification (Avoidance and Minimization)
The stream and wetland impact to Area 1 is necessary for installation of a utility pipeline
because the wastewater flow must be delivered from the Influent Pumping Station on the east
side of the stream to the treatment basins on the west side of the stream. Wetland impacts have
been minimized be locating all of the structures and most of the pipelines out of the wetlands.
This pipeline could not be installed without the stream and wetland crossing because of
constraints due to other structures and utilities. To avoid the crossing, the pipeline would have to
cross the stream in the road embankment to the north of the proposed crossing. This road
embankment already has a number of pipelines and electrical duct banks in place, and installing
this 30-inch pipeline would risk damaging these existing utilities. Furthermore, the additional
500-feet of pipeline that would be required would significantly increase both the installation cost
and operating (pumping) cost. The impact is minimized by crossing the stream and wetlands
perpendicular to the stream, and by locating the crossing where the wetlands width is at its most
narrow region.
The wetland impact to Area 2 is necessary for a utility pipeline to direct the influent

u

wastewater to flow to the new Influent Pumping Station. The existing Influent Pumping Station
is not large enough for the increasing flows to the plant, and thus, is being replaced. The new
Influent Pumping Station has been located in the only suitable location on site, and the gravity
sewer line must be extended to this new location.
The wetland impact to Area 3 is necessary for a utility pipe to carry the treated plant
effluent to the discharge point at McDowell Creek. There is an existing effluent pipe, but this
existing pipe does not have adequate capacity for the proposed increase in flows. In addition, the
ground cover over the existing pipe has eroded, such that the crown of the pipe is exposed above
the existing grade. This existing pipe is, therefore, subject to potential leaks and an increased
rate of deterioration due to exposure to the elements. The proposed new pipe will be installed
with an added layer of protective cover consisting of gravel and riprap. This protective cover
should prevent any erosion that could expose the pipe as occurred with the existing pipe. This

n

will help ensure the pipe stays protected, thus reducing maintenance, reducing the potential for
leaks, and increasing the probable life of the installed pipe. Alternatives were considered for the
size, location, and alignment of this pipe, with the goal of minimizing the wetland and stream
buffer impacts. The selected design will adequately pass the intended flows, and will be
properly constructed to protect the pipe and improve the long-term effectiveness of this
installation.
Mitigation
The stream and wetland impact to Area 1 will be temporary. Prior to excavation, the top
six-inches of top soil will be removed and stockpiled onsite, to be used to restore the wetland
area. Mitigation of this area will include restoring contours to existing grades, replacing the top
six inches of topsoil to replace the seed bearing strata and, outside of a maintenance easement,
live-staking the disturbed stream banks. Live staking will be performed following the guidance
of James Matthews, Ph.D., of HARP, Inc. General recommendations for live staking are
anticipated to include planting stakes on two-foot centers along the disturbed stream banks. For
the areas in which the original topsoil was replaced, it is anticipated that natural vegetation will
replenish itself after replacing this seed bearing strata, therefore eliminating the need for live-
staking.
The wetland impact to Area 2 will also be temporary, and mitigation to this area will be
r

I I
similar to Area 1. Prior to excavation, the top six-inches of top soil will be removed and
stockpiled onsite, to be used to restore the wetland area. The contours will be restored to
preconstruction conditions after the gravity main installation. The higher flow areas will then be
stabilized with gravel riprap, and other disturbed areas will be amended with the stockpiled top
6-inches of top soil to replace the seed bearing strata.
The wetland impact to Area 3 will be temporary, except for the installation of the
protective cover for the pipe. The protective cover will include gravel and riprap placed on the
slopes and top surface. However, we are working with Jim Matthews, Ph.D., of HARP, Inc., and
based on his evaluation we anticipate that the protective cover placed over the pipe for protection
may actually serve to increase the overall hydrology of the wetland by contributing to
floodwaters backing up upstream of this pipeline. It is anticipated that this will help to create
and enhance one acre or more of better quality wetland. This enhanced wetland area may also
6

' increase amphibian habitat. This probable new and enhanced wetland will help to mitigate the
impacts to this area. Beyond the limits of the protective cover for the pipe, mitigative practices
similar to Areas 1 and 2 are proposed. The top 6-inches of top soil will once again be removed
and stock piled onsite to replace the disturbance area beyond the protective cover. The area will
be restored to preconstruction grades to the extent possible with the protective cover. The other
regions of this disturbance will be amended with the stockpiled soil to replace the seed bearing
strata and allow native vegetation to re-grow.
' Storm Water Detention Ponds
As required by the Town of Huntersville Water Quality Ordinance, Low Impact
Development (LID) practices in combination with conventional storm water management
t practices will be used to control and treat the increase in storm water runoff volume associated
with the post-construction conditions for the 2-year frequency, 24-hour duration storm event.
' In addition, the peak storm water runoff release rates leaving the site during post-
construction conditions shall be equal to or less than the pre-development peak for the 2-year
frequency, 24-hour duration storm event and the 10-year frequency, 24-hour duration storm
event.
All Low Impact Development practices shall be designed to control and treat the first
1-inch of rainfall from the additional impervious areas due to the project. The preconstruction
impervious area for the site is approximately 5.1 acres. With the Expansion to 12 mgd project,
an additional 6.0 acres of impervious area will be added, bringing the total to approximately
11.1 acres of impervious area for the entire site. Treatment is required to achieve average annual
85 percent Total Suspended Solids (TSS) removal.
' Bioretention areas in conjunction with storm water ponds will be used to control and treat
storm water runoff as required by the Town of Huntersville Ordinance. Approximately
42,000 square feet of bioretention area will be constructed throughout the site to treat the storm
water runoff and remove pollutants prior to entering adjacent streams, ponds, and lakes.
' Three storm detention ponds will be constructed onsite to control the storm water runoff
rate to preconstruction conditions. Storm Pond No. 1 will be sized to accommodate flow from a
' drainage area of approximately 4.9 acres. Storm Pond No. 2 will be sized for a drainage area of
approximately 14.1 acres, while Storm Pond No. 3 will be sized for a drainage area of

INCLUDED DOCUMENTS AND DRAWINGS

1. Exhibit IA - Location Map (Larger Scale)
2. Exhibit 1 B - Location Map (Smaller Scale)
3. USGS 7.5 Minute Topographic Quadrangle Map
4. USDA Soil Conservation Service Soil Survey Map
5. Drawing B3 - Sitework Overall Site Plan
t 6. Drawing B4 - Sitework Partial Site Plan
7. Drawing B5 - Sitework Partial Site Plan
8. Drawing B6 - Sitework Partial Site Plan
9. Drawing B7 - Sitework Partial Site Plan
10. Drawing B8 - Sitework Partial Site Plan Yard Piping
11. Drawing B9 - Sitework Partial Site Plan Yard Piping
12. Drawing B10 - Sitework Partial Site Plan Yard Piping
13. Drawing B 11 - Sitework Partial Site Plan Yard Piping
14. Drawing B22 - Sitework Miscellaneous Yard Structures and Details
15. Drawing B29 - Sitework Erosion Control Details
16. Routine Wetland Determination Data Forms
17. Finding of No Significant Impact (FONSI), Issued by the North Carolina
Division of Water Quality, Water Quality Section.

L

Exhibit IA
Charlotte-Mecklenburg Utilities
McDowell Creek WWTP
Location Map

Exhibit 1B
Charlotte-Mecklenburg Utilities
McDowell Creek W WTP
Location Map
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' DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
1 ?03
' ` r 1 . l t)l cep Ey PAt?ISia?? Date: ! DEL
Project / Site• h'????DO'a County: M>+
' Applicant /Owner: MND State: h1!'
Investigator: SouL??
No Community ID:
' Do normal circumstances exist on the site? Yes Nc? Transect ID: LE ? t
Is the site significantly disturbed (Atypical situation)? Yes Plot ID: SDP
Is the area a potential problem area? Y? No
' (explain on reverse if needed)
VEGETATION
Stratum indicator
Dominant Plant S as stratum Indicator Dominant Plant Species
us s Jarti+'c? T ?ACv?I 9.
1.?Q x ?_ F?tC N/ 10. -
2. rK rner? 08L 11.
3. Ate 11a wl ' ? C am 4. L; rq ? 5; n en 5 ? ?_ , 13.
j(mt neum gc-
'um -
G CdnQ pr?Scis S_ 14.
6. SA^?t 15.
8.
' 8.
ding FAC-).
C.v to Percent of Dominant Species that are OBL, FACW, or FAC exclu o
.lg was
' Remarks: Wetland Vegetation Present Based List of Plane Species thathOccwo/in Wof the etlands Plant Species a rlo taken...
Classified as FAC-OBL in the National WAS NtoS• Lt I1EC c.,? MTE D..
T?-xoptu''''? a5 vur of ITS ?ANGc f4?1p
' HYDROLOGY
Wetland Hydrology Indicators
_ Recorded Data (Describe In Remarks):
_ Stream, Lake, or Tide Gauge Primary Indicators:
Aerial Photographs _ undated
Other ?turated in Upper 12"
?- Water Marks
No Recorded Data Available - Drift Lines
Sediment Deposits
Field Observations: Drainage Patterns in Wetlands
Depth of Surface Water: Secondary Indicators:
oxidized Roots Channels in Upper 12"
Depth to Free Water in Pit: ?! D (in.) ? Water-Stained Leaves
t ,O Local Soil Survey Data
FAC-Neutral Test
Depth to Saturated Soil: _-('n•) Other (Explain in Remarks)
Remarks:
I`.

?i
n

u
SOILS
Map Unit Name
(Series and Phase): Monacan
Drainage Class:
LL
Taxonomy (Subgroup):1=1Uya9uenT,G tsf7roChie ?5 Confirm Mapped Type? -fifes-Klo
No
Profile Description:
Depth Matrix Colors
Mottle Colors Mottle Texture, Concretions,
Inches Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
2,o
/a YK 3 --- - 5400 cOAw+
_
Z-0 ?z 5y 1/t --- ;1 4 lo+l
5 4
cP - ld t Y(Z '513 U0140 ;4t' lo?„?,
_
0 - I to Itz
5 Z`? `? [Q ?o o r' a
.r
711
Hydric Soil Indicators:
_ Histosol
_ Histic Epipedon _ Concretions
_ High Organic Content in Surface Layer in Sandy
Soils
Sulfidic Odor
Organic Streaking in Sandy Soils
_
Aquic Moisture Regime Listed On Local Hydric Soils List
_
Reducing Conditions Listed on National Hydric Soils List
_
Gleyed or Low-Chroma Colors - Other (Explain In Remarks)
^A-

Remarks:
WETLAND DETERMINATION
n

L

r
Hydrophytic Vegetation Present? Yes No is the Sampling Point
Wetland Hydrology Present? Yes No Within a Wetland? Yes_ZNo
Hydric Soils Present? Yes ? No
Remarks: Location (describe) is/4@vet classified as a wetland based upon the criteria set forth in the 1987
Army Corps of Engineers Wetlands Delineation Manual.

n
I I

0
n

DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
?oc?e?? CrCCIC WU?1? CrJ510A! Date: 15 D><C `03
Project /Site: G County: M&6-66 u?i
Applicant / Owner: ?A MU SDU L t R State:
investigator: -
Yes-Z No Community ID:__
Do normal circumstances exist on the site? No Transect ID:
Is the site significantly disturbed (Atypical situation)? Yea Plot ID: D: C? Z
f•
Is the area a potential problem area? yes No?
(explain on reverse if needed)
VEGETATION
ea

Dominant Plant S l
Stratum
Indicator

era Il r c
L ? r?'od p,?:,c? rw?
1.
2. Anus
`- rAc
ful Y?? 4
J,,?,,,,a peM s v? ra I nAa n d.-
4 s
5 14GU -
.-
rN1 Iii rm ? I1 Eu w1
05? a
5 AG
.
A2 i -'.:iprrw iapu?u`GC?
_ FAC -
7.
8.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-).
507.
Remarks: Wetland Vegetation Present Based Upon Greater than 50% of the Plant Speci esmwl reennott
I Classified as FAC-OBL in the National List of Plant Species that Occur in Wetlands- Sample plot

HYDROLOGY
_ Recorded Data (Describe In Remarks):
_ Stream, Lake, or Tide Gauge
_ Aerial Photographs
Other
No Recorded Data Available
Field Observations:
Dominant Plant Species Stratum Indicator
9.
10.
11.
12.
13. ---
14.
15.
16.
Wetland Hydrology Indicators oast
Primary Indicators:
_ Inundated
_ Saturated in Upper 12"
_ Water Marks
_ Drift Lines
_ Sediment Deposits
Drainage Patterns in Wetlands
, D (in.) Secondary Indicators:
Depth of Surface Water: 0
_ Oxidized Roots Channels in Upper 12"
` (in.) Water-Stained Leaves
Depth to Free Water in Pit: Local Soil Survey Data
Depth to Saturated Soil: FAC-Neutral Test
(?n') Other (Explain in Remarks)
' Remarks:
r
r
i
i
SOILS
Map Unit Name /+

l
(fec ,D
• r
Vy
Cl
D
i
e
(Series and Phase): ass:
ra
nage
Taxonomy (Subgroup): T p"C tI Ap la a It s Confirm Mapped Type? Y*s_lD
No
Profile Description:
Depth Matrix Colors
Mottle Colons Mottle Texture, Concretions,
Inches Horizon Munsell Moist
o- Z A 5YR s (Munsell Moist) Abundance/Contrast Structureetc.
SYR 3 a Ceo o Ma Lo4.w?T (OAS
5 P- 3 - ?opwl
Hydric Soil Indicators: OBI
Histosol _ Concretions
_
_ Histic Epipedon _ High Organic Content in Surface Layer in Sandy
Soils
Sulfidic Odor
Organic Streaking In Sandy Soils
_
Aquic Moisture Regime Listed On Local Hydric-Solis List
-
Reducing Conditions Listed on National Hydric Solis List
_
Gleyed or Low-Chroma Colors _ Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No Is the Sampling Point
Wetland Hydrology Present? Yes No ? Within a Wetland? Yes_ No_Z
Hydric Soils Present? Yes No
Remarks: Location (describe)Wis not classified as a wetland based upon the criteria set forth in the 1987
Army Corps of Engineers Wetlands Delineation Manual.
2
r
r

DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
t / Site: M6 bowel] Neek W W rp ej(Pft?hl wj Date: /5 DtL N 03 -
Projec
Applicant / Owner: Ni.UD
0UL County: MECK But
State: 14C
Investigator: ,J o , 5 ,
Do normal circumstances exist on the site? Yes V No
Z Community ID:
t ID
T
Is the site significantly disturbed (Atypical situation)? Yes No
?/ :
ransec
t ID: SAMPC 3
Pl
Is the area a potential problem area? Yes No , o
(explain on reverse if needed)
VFGFTATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Qx?nus ennS ?1?Aa?C'? 'T' r46 IA/ 9.
2.?e r'A r? _T Ff)CW/ 10.
3. 4 x tar
4, rc?r'Ns Cernuu s _ 05L. 12.
5. a„, z V?r iryGG ©tgl_ 13.
6. 14.
7. 15.
g, 16.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). '5Z5=
Remarks: Wetland Vegetation Present Based Upon treater than 50% of the Plant Species arehmommt
Classified as FAC-OBL in the National List of Plant Species than Occur in Wetlands. Sample plot was taken...
HYDROLOGY
Recorded Data (Describe In Remarks):
Stream, Lake, or Tide Gauge
Aerial Photographs
Other
- No Recorded Data Availal
?A
Field Observajjpns:
Depth of mace Wajr (ink
Depth to -foe Water irO#) : 0,0 (iril
Depth,to Saturated Soil: (2, C' (in.)
Remarks:

VVetland#lydro.logy Indicators
primary ndicators: '
Inundated
Saturated In Upper 12" ;,.
Water it±fsrks
Drift Lines
T Sedirinnt Deposits
Draingpe Patterns in.Wgjs6 s4P
f eoondary;lP f cators.
xidized`koots Channels in Upper 12"
Water-Stained Leaves
Local Soil Survey Data
_ FAC-Neutral TIst
_ Other (Explaig in Remarks)
rz
t
,r
SOILS`

Map Unit Name
(Series and Phase): M o rl A Carl S{?p
Drainage Class:
rou -rlU?a U9441L f?oc?r' 7S Confirm Mapped Type? afes• l
b
)'
g
P
Taxonomy (Su
No
Profile Description:
Depth Matrix Colons
(Munseli Moist) Texture, Concn#lons,
MOUNFC-dwr Mottle
(Munsetl Moist) Abundancelcontrod Structure. etc.
inches Horizon
p -
/o 2.5 Ct q 5 S Or aw' Aa y??,
_
_
_ ?j - 0 ?Y `38 Z. ? Nth

Hydric Soil Indicators:
_ Histosol
_ Histic Epipedon _ Concretions
_ high Organic Content in Surface Layer in Sandy
Solis
Sulfidic Odor
Organic Streaking in Sandy Solis
_
Aquic Moisture Regime Listed On Local Hydric Soils List
-
educing Conditions Listed on National Hydric Soils List
Gleyed or Low-Chroma Colo rs -Other (Explain in Remarks)
Remarks:
r?
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No Is the Sampling Point
Wetland Hydrology Present? Yes No Within a Wetland? Yes_ No_
Hydric Soils Present? Yes :z__ No
Remarks: Location (describe) is classified as a wetland based upon the criteria set forth in the 1987
Army Corps of Engineers Wetlands Delineation Manual.

r'
r
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
Project/Site: M[ cDpoed er'' eL WwTf EXPOW5IO Date: 15 Df-C "03
KI.?# U
Applicant/ Owner: UIp County: M ?C Investigator: JC-) 111 T 50a L AIRI> State: 8,,
Do normal circumstances exist on the site? Yes No Community ID:
Is the site significantly disturbed (Atypical situation)? Yes No? Transect ID:
Is the area a potential problem area? Yes No ? Plot ID: 5gNl_PLi5
(explain on reverse if needed)
v?n0TA'r1nK1

cies
Dominant Plant Spe __
Stratum
Indicator
Dominant Plant Species
Stratum Indicator
_7- FAG} 9.
2. q nuS 06c e a' T ??ACW- 10.
3. Cer YMU. u o 7- PAC W 11.
4. u S
5. Eleteay huS uM e(a a
-5/_5 -'
AG[/ 12.
13.
6. Lo `ce?? ?a oru'G? V
W FAG- 14.
7, w,vt en ?
=f r?G 15.
8. 16.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 3 5 - 50
Remarks: Wetland Vegetation Present Based Upon Greater than 50% of the Plant Species **are not
Classified as FAC-OBL in the National List of Plant Species that Occur in Wetlands. Sample plot was taken...
uvnQ[nl [)GY
Recorded Data (Describe In Remarks): Wetland Hydrology Indicators MOM 6
Stream, Lake, or Tide Gauge
Aerial Photographs Primary Indicators:
Other Inundated
_ Saturated in Upper 12"
No Recorded Data Available
- - Water Marks
Drift Lines
Sediment Deposits
Field Observations: Drainage Patterns in Wetlands
Depth of Surface Water: (in.) Secondary Indicators:

II?N? Oxidized Roots Channels in Upper 12"
(in.)
Depth to Free Water in Pit: I Water-Stained Leaves
_
_ Local Soil Survey Data
Depth to Saturated Soil: (in.) _ FAC-Neutral Test
Other (Explain in Remarks)
Remarks:

SOILS
Map Unit Name
C
;
W
eC
(Series and Phase): Drainage Class:
Taxonomy (Subgroup): T A? t'C &e l udy bs Confirm Mapped Type? V*9- Q0
No
Profile Description:
Depth Matrix Colors
Mottle Colors Mottle Texture, Concretions,
Inches Horizon (Munsell Moist)
51F 5 (Munsell Moist) Abundance/Contrast Structureetc.
oa wr ooof s

L_ 1? .? 2 ,5 C? ? oa??

Hydric Soil Indicators: Y e,
Histosoi _ Concretions
_
Histic Epipedon _ High Organic Content in Surface Layer in Sandy
Soils
Sulfidic Odor Organic Streaking In Sandy Soils
_
_ Aquic Moisture Regime Listed On Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
_
_ Gleyed-or-Low-Chroma Colors _ Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes No Is the Sampling Point
Wetland Hydrology Present? Yes No :;Z Within a Wetland? Yes_ No
Hydric Soils Present? Yes No _/
Remarks: Location (describe)lis not classified as a wetland based upon the criteria set forth in the 1987
Army Corps of Engineers Wetlands Delineation Manual.
i'

J

7

7

7
7

FINDING OF NO SIGNIFICANT IMPACT
ENVIRONMENTAL ASSESSEMENT FOR THE MCDOWELL CREEK
WASTEWATER TREATMENT PLANT EXPANSION
September 25, 2003
Project Applicant: Charlotte-Mecklenburg Utilities
Project Number: DWQ # 13203
Responsible Agency: NC Department of Environment and Natural Resources
Division of Water Quality, Water Quality Section (Division)
Pursuant to the requirements of the North Carolina Environmental Policy Act (N.C.G.S. § 113A-
1, et seq.), an environmental assessment (EA) has been prepared for the expansion of the existing
McDowell Creek Wastewater Treatment Plant (WWTP). The proposed project will expand the
plant's existing permitted capacity of 6.0 million gallons per day (mgd) to 12mgd. The additional
treatment capacity is needed to accommodate increased flows projected to occur as result of new
growth and development within the service area.
The plant, owned and operated by the Charlotte-Mecklenburg Utilities (CMU), provides service
to customers within the towns of Huntersville and Cornelius and their extra territorial
jurisdictions. The plant is located on Neck Road in northern Mecklenburg County within
Huntersville's extra-territorial jurisdiction. Effluent from the plant is discharged into McDowell
Creek approximately one half mile upstream of Mountain Island Lake on the Catawba River.
Approximately 21,500 acres in Huntersville and 8,200 acres in Cornelius will be served by the
project.
Several alternatives to the proposed project were analyzed for the EA. Options discussed
included diverting wastewater to Cabarrus County, to other CMU treatment plants, constructing
smaller package treatment plants, and taking no action. The selected project was chosen because
by expanding the existing facility no new land will need to be disturbed, the existing discharge
can be utilized, and treatment consistent with NPDES discharge permits can be assured.
All construction activity related to the expansion of the McDowell Creek WWTP will occur at
the existing 100-acre plant site. The project will add an additional 14 acres of new facilities. All
construction will take place above the 100-year flood plain elevation on McDowell Creek and
Mountain Island Lake. An Erosion and Sedimentation Control Plan will be submitted to the
DENR Raleigh office for approval before construction commences. Permanent stormwater
detention ponds will be constructed to improve runoff quality from the site. A 100 foot
vegetated buffer around the site on Neck Road will be provided.
The land surrounding the plant is generally rural. A majority of the land use throughout the
service area is designated as single family residential. There are no prime or unique agricultural
7

H

lands at the project location. No critical habitat, significant, rare, or unique terrestrial wildlife
habitat was identified nor will be impacted.
Secondary and cumulative impacts to the environment associated with new development could
result from the increase in capacity. Various town ordinances and land development regulations
of Huntersville and Cornelius will mitigate many of the adverse effects from such development.
These include riparian buffer, stormwater management, and open space protection programs.
Application of Huntersville's low impact development ordinance will provide further mitigation
for potential water quality impacts. Additionally, the Town of Cornelius requires delineation of
jurisdictional waters as part of its site plan review process. These and other mitigation measures
to be utilized by both jurisdictions are described in further detail within the EA.
The Division of Water Quality has concluded that the proposed project will not result in
significant impacts to the environment. This decision is based upon information provided in the
EA and review by governmental agencies. This EA and Finding of No Significant Impact
(FONSI) are prerequisites for the issuance of a NPDES Discharge Permit and 401 Water Quality
Certification by the Division of Water Quality. An environmental impact statement will not be
prepared for this project. This FONSI completes the environmental review record, which is
available for inspection at the State Clearinghouse.
North Carolina Division of Water Quality
September 25, 2003

00
w Y`Fi
10 North Carolina Wildlife Resources Commission
Charles R. FL111W00d, F%eCUIIVe Director
MEMORANDUM
TO: John R. Dome. Division of Water Quality
Dept. of Environment and Natural Resource
FROM: Ron Linville. Regional Coordinate -,
Habitat Conservation Program ?-
DATE: Mav 21, 2004
SUBJECT: Rcview of an application for McDowell Creek Wastewater Treatment Plant
(WWTP) Expansion to Twelve (12) Million Gallons per Day (GPD), DWQ No.
040763, Mecklenburg County
Charlotte Mecklenburg Utilities Department (CMUD) is requesting 401 Water Qualit}
Certification from the North Carolina Division of Water Quality. The NCWRC has reviewed
information provided by the applicant, and field biologists on our staff are familiar with habitat
values of the project area. Thesc comments arc provided in accordance with provisions of the
Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and the Fish and Wildlife Coordination Act (48
Stat. 401. as amended; 16 U.S.C. 661-667d).
The WWTP expansion project will have direct impacts on 0.236 acres of wetlands and
temporary impacts to twenty (20) feet on an unnamed tributary of McDowell Creek. This will
allow the WWTP site to be expanded for wastewater flow increases from six (6) MGD to twelve
(l2) MGD.
Based on our knowledge of the area, we do not believe these impacts will cause
significant aquatic resource impacts as local ordinances require stormwater management,
including the use of Low Impact Development (LID) techniques, the preservation of stream
buffers, and floodplain protection measures. Accordingly, we will not object to issuance of a 401
certification providing previous Clearinghouse approvals or a Finding of No Significant Impact
(FONSI) has been issued for the WWTP expansion. Standard 404/401 conditions should be
required and implemented. If economically practicable, directional boring for the sewer line
crossing should be considered.
Thank you for the opportunity to review and comment on this project. If you have any
questions regarding these comments. please contact me at 336/769-9453.
Cc: Melba McGee. OLIA
Mailing Address:
Divisiorn of Inland Fi.shcrics • 17-11 Nbil Scrvic(
Telephone. [phone] cxt. 281 • Kati:
( ;enter • Raleigh, NC 27699-1721
(919) 713-76+3