NC0023892_Wasteload Allocation_19930803

DIVISION OF ENVIRONMENTAL MANAGEMENT
August 3, 1993
MEMORANDUM
TO: Jimmie Overton
Environmental Sciences Branch
FROM: Betsy Johnson j3
Technical Sup rt Branch
THROUGH: Mike Scoville
Ruth Swanek
SUBJECT: SOD Request for M%110"G._'_Y.,.
Speculative limits are being developed for the proposed expansion and
relocation of the City of Salisbury - Grants Creek WWTP. The City plans to relocate
its 7.5 MGD discharge from Grants Creek to the Yadkin River above Grants Creek.
An expansion to 20 MGD is also planned which will include the Salisbury Town
Creek and Spencer WWTPs. An SOD measurement in the Yadkin River above High
Rock Lake is requested to reduce model uncertainty. The data from the clear
chamber may also strengthen our case for nutrient reductions from the discharge.
If you have any questions regarding this request, please call me.
Attachment
cc: Jay Sauber
Mooresville Regional Office

State of North Carolina
Department of Environment, ffl:6;VA
Health and Natural Resources • •
Division of Environmental Management
James B. Hunt, Jr., r ry p E H N F1
Jonathan B. Howes,, Secretary
A. Preston Howard, Jr., P.E., Director
June 30, 1993
MEMORANDUM
TO: Melba McGee, Planning and Assessment
FROM: Monica Swihart';"Water Quality Planning
SUBJECT: Project No. 93-0943; Scoping - Proposed Construction of
a New Wastewater Outfall from Salisbury's Grant Creek
WWTP to the Yadkin River;, & Proposed New Regional
Wastewater Treatment Plant
The Division of Environmental Management's Water Quality
Section has reviewed the scoping letter for the subject project.
Our Section will be acting as the lead agency in coordinating the
document preparation and the State's environmental review of the
environmental assessments. To aid in preparation of the
environmental documents, I have attached a memorandum from the
Department of Administration regarding procedures for complying
with the State Environmental Policy Act. The memorandum provides
useful guidelines for preparing environmental documents.
The project area is upstream of a section of High Rock Lake
which is classified as WS-IV&B. The section of the Yadkin River to
which the new wastewater outfall would discharge is classified as
WS-V. The applicant should contact our Technical Support Branch to
obtain draft or speculative waste limits that would be required to
avoid potential water quality impacts from eutrophication or toxic
substances. Instream water quality standards are more stringent
for streams classified for water supply and, therefore, can have an
effect on wastewater discharge permit limits. The applicant should
also contact Linda Sewell, Deputy Director of the NC Division of
Environmental Health, at [phone]. This Division is
responsible for public water supply protection.
Our Division is also responsible for issuing 401 Water Quality
Certifications. A 401 Certification would be required if there
would be sufficient proposed filling of Section 404 (Clean Water
Act) wetlands to warrant issuance of a permit from the U.S. Army
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Melba McGee
June 30, 1993
Page 2
Corps of Engineers. The document should thoroughly discuss the
potential impacts to wetlands, in terms of plant communities
affected, and the mitigation measures to compensate for habitat
losses. The applicant should contact our Mooresville Regional
Office [phone] or our Wetland and Technical Review Group at
[phone] for further details on the 401 Certification process.
Thank you for the opportunity to provide comments.
cc: Coleen Sullins(w/scoping letter)
Steve Zoufaly (w/scoping letter)
John Dorney (w/scoping letter)
Ruth Swanek (w/scoping letter)
Brenda Smith/Rex Gleason, MRO (w/scoping letter)
ED
iECHWA SUPPORT NCH

Robert J. Goldstein & Associates, Inc.
ENVIRONMENTAL PLANNERS AND CONSULTANTS
8480 Garvey Drive Tel: [phone]
Raleigh, North Carolina 27604-3175 FAX: [phone]
May 19, 1993
MAY 1993
Mrs. Chrys Baggett, Director
N.C. State Clearinghouse���>'„'''�
Department of Administration
116 West Jones Street f
Raleigh, N.C. 27611�'
Dear Mrs. Baggett:
Robert J. Goldstein & Associates, Inc. has contracted with the City of Salisbury to
prepare two closely related Environmental Assessments for wastewater improvements in
Rowan County, N.C. We are requesting state project review numbers and agency scoping
comments. I presume. the scoping comments for the two documents can be combined in a
single response letter from each agency.
The first document will address the environmental impacts of constructing a new
wastewater outfall (dotted line on map) from Salisbury's existing Grants Creek WWTP to the
Yadkin River upstream of High Rock Lake. The existing Grants Creek outfall, which also flows
to High Rock Lake, will be retired. The new outfall will provide greater dilution and
assimilative capacity, and will be be farther from the raw water intake on High Rock Lake.
This proposed outfall is an interim solution to the City's discharge problem pending
construction of a new WWTP with nutrient removal capabilities.
The second EA will address the proposed new regional WWTP. Two sites will be
considered: one adjacent to the existing Grants Creek WWTP (Grubb Ferry size); and the other
east of Grants Creek (Sowers Farm site). A map of the two sites (LISGS Salisbury Quad) is
enclosed.. The new WWTP will initially handle 20 MGD, but.sufficient land will be purchased
to ultimately site a 100 MGD plant which will serve Salisbury and several surrounding
municipalities.
Sincere ,
Gerald B. Pottern, M.Sc.
Senior Biologist
Fsvironmental Assemmeus • Environmental Impact Statanaus • Jurisdictional Wetland Delineadans • Endangered Species Surveys • Critical Habitat Surveys
Archaeological Surveys and Testing • Real Estate Surveys • Hazardous Waste Risk Assessmenu • Lake Management • Watershed Management • Instreme flow Analyses
Mitigation Plans • Stream Restoration • Aquatic Toxicity Testing • 404, 401, 402(NPDES) Permits • Section 106 Compliance • Highways
Municipal Solid Waste Landfills • Water Supply Intakes and Lines • Wastewater Plants • Sewerlines • LandfiRr • Biological Assessments • Transmission Lines
r

,�.
725

alVEl—
10—UN 0 2 1993
L. HIS AA SUVFO T BRANCH
May 27, 1993�
Mr. Steve W. Tedder, Chief
Water Quality Section
Division of Environmental Management
P. O. Box 29535
Raleigh, N. C. 27626-0585
Subject: Letter of Clarification for Wastewater Discharge
into the Yadkin River from Grant Creek Regional
Wastewater Treatment Plant and Town Creek Regional
Wastewater Treatment Plant, Salisbury, N. C.
P&W Project No. 0330
Dear Mr. Tedder:
In reference to my letter to you dated April 27, 1993,
relative to effluent limits of the wastewater to be discharged to
the Yadkin River from the Grant Creek Plant and the Town Creek
Plant through a common outfall, we have made a statement in the
first paragraph that is incorrect and we are writing to you to
clarify the incorrect statement which reads ..... it is our
understanding the same effluent limits to be required for the two
plants will remain the same when they are connected to a common
outfall which will discharge into the Yadkin River..... The
incorrect portion of the sentence should have read, it is our
understanding the limits for conventional pollutants will remain
the same; however, the metals limits and chronic toxicity
concentration will be reevaluated based on the Yadkin River and the
diffuser design.
We trust this clarification is in keeping with your
understanding. If there are questions, please let us know.
Sincerely,
I
G.ntt
David Treme
City Manager
DT:sph
pc: Peirson & Whitman
John C. Vest
Barrett Lasater
Betsy Johnson �/
Charles Lowe
Richard Bridgeman - Mooresville Regional Office
CITY OF SALISBURY
P.O. BOX 479, SALISBURY, NORTII CAROLINA 28145-0479

DEPARTMENT OF ENVIRONMENT,HEALTH,AND NATURAL RESOURCES It
DIVISION OF PLANNING AND ASSESSMENT
PROJECT REVIEW FORM
TITLE - %COPING - PROPOSED CONSTRUCTION OF A NEW WASTEWATER OUTFALL FROM
%ALI%BURY'%'GRANT% CREEK WWTP TO THE YADKIN RIVER & PROPOSED NEW
REGIONAL WASTEWATER TREATMENT PLANT
PROJECT
NO - 93-0943
COUNTY - ROWAN
DATE - 05�24/93
RESPONSE DUE DATE
-
MANAGER %IGN-OFF/REGION:
DISTRIBUTION LIST
WILDLIFE
ENVIRONMENTAL HEALTH
FOREST RESOURCES
SOIL AND WATER
MOORE%VILLE REGIONAL OFFICE
AK WQ, GW, LQ
ENVIRONMENTAL MANAGEMENT (GW)
ENVIRONMENTAL MANAGEMENT (AQ) ENVIRONMENTAL MANAGEMENT
MANAGEMENT
PARK% AND RECREATION
t.=
WATER PLANNING
OTHER _________----------
WATER QUALITY
.�.`~``�~.`=..
SECTION
DATE�
IN-HOUSE REVIEWER/AGENCY:' ' DATE:
AS A RESULT OF THIS REVIEW, THE FOLLOWING IS SUBMITTED:
NO OBJECTION TO PROJECT AS PROPOSED
NO COMMENT
INSUFFICIENT INFORMATION
CONSISTENCY STATEMENT NEEDED NOT NEEDED
OTHER (SPECIFY AND ATTACH COMMENTS)
ENVIRONMENTAL DOCUMENT REQUIRED UNDER THE
PROVISIONS OF NEPA AND %EPA
RETURN TO MELBA MCGEE, DIVISION OF PLANNING AND ASSESSMENT

f , r Robert J. Goldstein & Associates, Inc.
ENVIRONMENTAL PLANNERS AND CONSULTANTS
8480 Garvey Drive
Raleigh, North Carolina 27604-3175
May 19, 1993
SAY 7993 N
Mrs. Chrys Baggett, Director , ti
N.C. State Clearinghouse �7;;;;.>„�� m
Department of Administration Cti;a �t`!:L'r
116 West Jones Street
Raleigh, N.C. 27611 �61�
Dear Mrs. Baggett:
Tel: [phone]
FAX: [phone]
Robert J. Goldstein & Associates, Inc. has contracted with the City of Salisbury to
prepare two closely related Environmental Assessments for wastewater improvements in
Rowan County, N.C. We are requesting state project review numbers and agency scoping
comments. I presume the scoping comments for the two documents can be combined -in a
single response letter from each agency.
The first document will address the environmental impacts of constructing a new
wastewater outfall (dotted line on map) from Salisbury's existing Grants Creek WWTP to the
Yadkin River upstream of High Rock Lake. The existing Grants Creek outfall, which also flows
to High Rock Lake, will be retired. The new outfall will provide greater dilution and
assimilative capacity, and will be be farther from the raw water intake on High Rock Lake.
This proposed outfall is an interim solution to the City's discharge problem pending
construction of a new WWTP with nutrient removal capabilities.
The second EA will address the proposed new regional WWTP. Two sites will be
considered: one adjacent to the existing Grants Creek WWTP (Grubb Ferry site); and the other,
east of Grants Creek (Sowers Farm site). A map of the two sites (USGS Salisbury Quad) is
enclosed. The new WWTP will initially handle 20 MGD, but sufficient land will be purchased
to ultimately .site a 100 MGD plant which will serve Salisbury and several surrounding
municipalities.
Sincere
Gerald B. Pottern, M.Sc.
Senior Biologist
Environmental Assessments • Environmental Impact Statements • Jurisdictional Wetland Delineations • Endangered Species Surveys • Critical Habitat Surveys
Archaeological Surveys and Testing • Real Estate Surveys • Hazardous Waste Risk Assessmats • Lake Management • Watershed Management • Instream Flow Analyses
Mitigation Plans • Stream Restoration • Aquatic Toxicity Testing • 404, 401, 402(NPDES) Permits • Section 106 Compliance • Highways
Municipal Solid Waste Landfills • Water Supply Intakes and Lines 9 Wastewater Plants • Sewerlines • Landfills 9 Biological Assessments 9 Transmission Lines

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SALISBURY
NO R T H CARO L INA
Mr. Steve W. Tedder, Chief
Water Quality Section
Division of Environmental Management
P. O. Box 29535
Raleigh, North Carolina 27626-0585
April 27, 1993
APR 114,18 1995
Subject: Permit Renewal Applications for
Grant Creek and Town Creek
Regional Wastewater Treatment Plants
Permit Application for Proposed Yadkin River
Regional Wastewater Treatment Plant
P&W Project No. 0330
Dear Mr. Tedder:
This is to confirm our discussion of April 22, 1993, relative to
renewal applications for permits for the City of Salisbury's Grant
Creek and Town Creek Regional Wastewater Treatment Plants and an
application for a permit for a proposed plant to be located on the
Yadkin River.
It is our understanding that you will proceed with the processing
of the Grant Creek NPDES permit NC-0023884 and Town Creek NPDES
permit NC-0023892, but will not continue to work on a permit for
the proposed Yadkin River Regional Plant until requested by the
City at a later date.
We appreciate the opportunity to discuss plans for present and
future wastewater facilities at Salisbury. If there are questions
concerning our understanding, please let me know.
Sincerely,
David W. Treme
City Manager
DT:sph
pc: Peirson & Whitman
John C. Vest
Barrett Lasater
Betsy Johnson
Charles Lowe
Richard Bridgeman, Mooresville, N.C.
THE CITY OF SALISBURY, NORTH CAROLINA

SALISBURY
NORTH CAROLINA
April 27, 1993
Mr. Steve W. Tedder, Chief
Water Quality Section
Division of Environmental Management
P. O. Box 29535
Raleigh, North Carolina 27626-0585
Subject: Plans for Wastewater Discharge into the
Yadkin River from Grant Creek Regional
Wastewater Treatment Plant and Town
Creek Regional Wastewater Treatment Plant
P&W Project No. 0330
Dear Mr. Tedder:
In reference to our meeting with representatives from the City of
Salisbury and the Water Quality Section on April 22, 1993, to
discuss plans for the discharge of effluent from the Grant Creek
and Town Creek wastewater treatment plants, it is our understanding
the same effluent limits that are to be required for these two
plants will remain the same when they are connected to a common
outfall which will discharge into the Yadkin River. The Grant
Creek Plant and the Town Creek Plant have a design capacity of 7.5
mgd and 5 mgd respectively. At the time these plants reach 80% of
their design capacity, engineering plans and specifications for a
new Regional Wastewater Treatment Plant located on the Yadkin River
will be prepared. During construction of the Yadkin River outfall
and diffusers, we will also construct chlorination/dechlorination
and aeration facilities near the end of the outfall. At the time
the Grant Creek Plant and Town Creek Plant begin discharging into
it, the effluent sampling location for these two plants will be at
the Yadkin River.
The discharge into the Yadkin River will be through three
underwater diffusers located at the quarter points of the river and
one emergency outlet at the river bank. These diffusers will be
located and designed to maximize the dilution of the river flow.
THE CITY OF SALISBURY, NORTH CAROLINA

Page
April 27, 1993
We appreciate the opportunity to discuss these plans with you and
your staff. If our understanding of the plans for the discharge
of treated effluent from the Grant Creek Treatment Plant and the
Town Creek Treatment Plant is different from your understanding,
please let me know.
Sincerely,
DEW 1�
David W. Treme
City Manager
DWT:sph
pc: Peirson & Whitman
John C. Vest
Barrett Lasater
Betsy Johnson
Charles Lowe
Richard Bridgeman, Mooresville, N.C.

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DRAFT REQUESIDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO023892
PERM=E NAME: City of Salisbury
FACILITY NAME: Town Creek Wastewater Treatment Plant
Facility Status:
Permit Status:
Major
Pipe No.: 001
Existing
Renewal
Minor
Design Capacity: 5.0 MGD
Domestic (% of Flow): 43 %
Industrial (% of Flow): 57 %**
Comments:
** Based on design flow and reported SIU flows from application.
Cone Mills assumed to be 2.3 MGD instead of 2300 GPD.
RECEIVING STREAM: Town Creek
Class: C
Sub -Basin: 03-07-04
Reference USGS Quad: E 17 NW
(please attach)
County: Rowan
Regional Office: Mooresville Regional Office
Previous Exp. Date: 1/31/92 Treatment Plant Class: IV
Classification changes within three miles:
Changes to WS-III & B downstream approximately 1.5 miles at High
Rock Lake.
Requested by: Charles Lowe Date: 8/3/92
DD
Prepared by: "nz-" Date: a 9 2
Reviewed by: Date: a 9 �3
0i�>y 33 S?
Modeler
Date Rec.
#
C—,4J d
-�_11 ti 3
7 q 75"
Drainage Area (mil ) /7. 2 Avg. Streamflow (cfs): %7
7Q10 (cfs) /, � Winter 7Q10 (cfs) 3
Toxicity Limits: IWC %
Instream Monitoring:
30Q2 (cfs) f
Acute/Chronic
06
Parametersao �f Gad, �c�al_ ,, Bd�>� /V"K ,-e,
Upstream Location LAza boa' 4621 4 ..
Downstream Y // Location4,n r. 1. sy,• �s ���,�„ ds�Q
-A, See A.�000s7 �ItD_�'L't
it
Effluent
Characteristics
Summer
Winter
BOD5 (mg/0
NH3-N (mg/1)
3
to
D.O. (mg/l)
S
S
TSS (mg/1)
3 b
30
F. Col. (/100 ml)
aoo
Roo
PH (SU)
6-9
6-`1
TP �. 1 ! r
Tip/ »+ �;
8
A0 ti1k%.
Lead (ti
33
-7C�
V /V�ctre-rol /.•.n;/s S4ou/dbe ,,"e-h b ' 1998. //-0.
Comments:�o�;,��-,.�

INSTREAM MONITORING FOR SALISBURY TOWN CREEK WWTP
NCO023892
a ParamPtr rc
Parameters
Summer
Winter
Location
DO
3/week Apr -Oct
1/week Nov -Mar
1, 2
Temperature
3/week Apr -Oct
1/week Nov -Mar
1 2
Conductivity
3/week A r-Oct
1/week Nov -Mar
1, 2
H
3/week Apr -Oct
1/week Nov -Mar
1, 2
Fecal Coliform
3/week Apr -Oct
1/week Nov -Mar
1 2
BODS
3/week Apr -Oct
1/week Nov -Mar
1, 2
TP PO4
1/week Jun -Se +
3
Nitrogen Series*
1/week Jun -Se +
3
* NO2 + NO3, NH3-N, TKN
Monitoring sites
1-at least 100 feet upstream of discharge
2-approximately 1.5 miles below the discharge
3- SR 2168

FACT SHEET FOR WASTELOAD ALLOCATION
'1�,q�
Request # *'A*4(i*
Facility Name: City of Salisl�irxTr NATURAL
NPDES No.: NC0023892 �''"gESOLRGES AND
Type of Waste: Domestic/ I�&W9 DEVEL�pMENT
Facility Status: Existing MQY 2 41993
Permit Status: Renewal
Receiving Stream:
Stream Classification
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
Town Creek
C Li1V►s►e% ESAE61SNAl AOEEICE
03-07-04 mt9w'ililE
Rowan
Mooresville
Charles Lowe
8/3/92
E17NW
Wasteload Allocation Summary
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2): 17.2
Summer 7Q10 (cfs): 1.4
Winter 7Q10 (cfs): 3
Average Flow (cfs): 17
30Q2 (cfs): 4
IWC (%): 85
(aDnroach taken correspondence with region EPA etc.l
This is an addendum to the fact sheet that was completed in Oct 1992. The permit has been _
drafted and is on hold for notice in July 1993, so it can be issued with the permits in the subbase
030704 for the basin management schedule. Since this will be a five year permit, nutrient limits:
should be included at this time. Localized nutrient impairment in Town Creek is well
documented. Town Creek was ranked by Environmental Sciences as the most nutrient impaired -
tributary to High Rock Lake. Algal blooms and chlorophyll -a violations regularly occur. 7
Instream levels of nutrients exceed DEM's targets for prevention of algal blooms.
Per our SOP, limits of TP = 0.06 mg/1 and TN = 0.6 mg/l are recommended due to the high r'
instream waste concentration. However, technology limits of :
summer winter
TP (mg/1) 0.5 1.0
TN (mg/1) 4.0 8.0
will be required. An implementation schedule should be developed for compliance with these
limits or relocation of the discharge to the Yadkin River.
In addition, instream monitoring for nutrients in the lake arm should be added.
June - Sept. (1/week): TP, PO4, TKN, NH3-N, NOx at SR 2168
Note: The Grants Creek WLA is on hold pending receipt of the design parameters for the
Yadkin River outfall.

Special Schedule Requirements and additional comments from Reviewers:
Recommended by: Date: 3 / 9 73
Bets)
son
Reviewed by
Instream Assessment: tfw �� �CAUu�^ Date:
Regional Supervisor: D G Date: 2 S
Permits & Engineering: Date: r5
JUN 1 7 1993
RETURN TO TECHNICAL SERVICES BY: