NC0025445_ENVIRONMENTAL ASSESSMENT_19930729

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0025445
Randleman WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
July 29, 1993
This dooumeat is printed on reuse paper - ignore an3.
coateat oa the reverse side

L '
MARZIANO & MINIER, PA
CONSULTING ENGINEERS HIRAM J MARZIANO P E
Phone [phone] EVAN R MINIER P E
FAX [phone]
919 S Cox S[ , Suite B, P O Drawer 2048, Asheboro, North Carolina 27204 2048
July 29, 1993
NC Department of Environment, Health
& Natural Resources
Division of Environmental Management
P 0 Box 29535
Raleigh, NC 27626-0535
Attention Ms Monica Swihart
Re City of Randleman
Wastewater Treatment Plant
Environmental Assessment
Dear Ms Swihart
Enclosed, please find three copies of the revised
Environmental Assessment that specifically answers questions
relative to the State's speculative limits and comments from
the Regional Office in Winston-Salem relative to feeding of o
sulfur dioxide for dechlorination .�
We trust the enclosed documents will allow you to ;
complete your review of this pro0ect If you require
additional information, please let us know rf
Very truly yours,
MARZIAN0 6 MINIER, P A
Hiram /rzaano, P E
HJM 7y
Enclosures
cc Mr Rick Hardin, City of Randleman

0
0
MAR 10 1995
y.'1.1liV I�J"M1L u n 1'�i i ,li+�b '`vl`0
State of North Carolma i
Department of Environment, Health, and Natural Resources
Winston-Salem Regional Office
James B Hunt, Jr , Governor Jonathan B Howes, Secretary
March 3, 1993 0D
MEMORANDUM
TO: Monica Swihart)
THROUGH. Steve Mauney \
e
FROM George Smith
SUBJECT Environmental Assessment
City of Randleman - WWTP
Randleman County
- Marziano & Minier, P A.
Upon reviewing the sub3ect environmental assessment (Revised
January 1993 version), the following comments from page 9-R are
noted.
1) The feasibility of a sulfur dioxide feed system to
neutralize chlorine is questioned This office has no data
available on chemical reaction kinetics for this system.
2) The solubility of sulfur dioxide in water rapidly
decreases as temperature increases Therefore this office
questions the precision with which this system can be
controlled
3) The assessment does not specifically mention a flow
control system for the sulfur dioxide feed. The
uncontrolled release of this gas may cause the effluent pH
to drop dangerously low
In general, this office would like to know the details of how this
system will work If you have any further questions please feel
free to contact the Winston-Salem regional office at 919-896-7007
cc Central File
WSRO
SO 25 \„i Oi Pn+l Pori.+ nl Smi. 100 1\in l� �m \( 17'06 +201 1,1 lh+ u,. 9195)C 7007 IA\)U S)6700,
An I y J Opwui iq AI li A+I un rmploy,t

PMPLIC-ko�
State of North Carolma
Department of Environment, Health, and Natural Resources
512 North Sahsbury Street Raleigh, North Carohna 27604
James B Hunt, Jr, Governor March 2, 1993 Jonathan B Howes, Secretary
Mr H J Marziano, P E
Marziano & Minier, P A
P 0 Drawer 2048
Asheboro, NC 27204-2048
Dear Mr Marziano
I have enclosed comments received from the Division of
Environmental Management's Water Quality Section on the revised
Environmental Assessment for the City of Randleman Wastewater
Treatment Plant Expansion As noted in Dave Goodrich's attached
February 25, 1993 memorandum, the Water Quality Section recommends
including the speculative limits provided by DEM in the document
The North Carolina Wildlife Commission informed me on February
19, 1993 that their concerns regarding the proposed dechlorination
system have been resolved and they have no further obDections to
the proDect
I recommend that we prepare the document for release to the
State Clearinghouse for review Please include all the agency
correspondence received on the Environmental Assessment in the back
of the document I will draft a Finding of No Significant Impact
to be included with the documents to be sent to the State
Clearinghouse Please send twelve copies of the final EA to my
attention and feel free to call me if you have any questions
Sincerely, n
� w� A
h V`
Monica Swihart
Environmental Review Coordinator
REGIONAL OFFICES
Asheville Fayetteville Mooresville Raleigh Washington Wilmington
70401-6208 919/486-1541 704/663-1699 919/571-4700 919/946 6481 919/395-3900
Pollution Prevention Pays
P O Box 29535 Raleigh, North Carolina 27626 0535 Telephone [phone]
An Equal Opportunity Affumauve Action Employer
Winston-Salem
919/896-7007

North Carolina Division of Environmental Management
Water Quality Section/Rapid Assessment Group
February 25, 1993
To Monica Swihart
Through Carla Sanderso�J�
Trevor Cleme
ah
From Dave Goodrich
Subject Comments on Revised EA for Expansion of Randleman WWTP
After reviewing the revision to this Environmental Assessment, Technical Support
continues to have reservations that this facility will meet advanced tertiary limits This concern
stems from the vague statement contained on page 5 - R wluch reads, " it is expected that future
expansions and permit renewals will hkely result in more stringent discharge limits " Once
again the specific limits which will apply upon expansion are not documented although this
information was sent to the City of Randleman over two years ago This failure to include the
specific hrruts may indicate that the facihty is not aware of the requirements posed in the future and
that would lead one to question how such requirements were accounted for in the City of
Randleman's planning process In addition, limits for metals and/or other toxicants maybe added
to the NPDES permit Randleman should work closely with DEM's Pretreatment Unit to assure
proper control and permitting of the city's significant industrial users
cc Steve Mauney, W-SRO

ENVIRONMENTAL ASSESSMENT
CITY OF RANDLELMAN
WASTEWATER TREATMENT PLANT
�N CA!>0'
`,\� oFEssioiy L "
-' S. Al
71 1 C'
0E
FNG 14�1Q
Mj
LM
Marziano & Minier, P A
919 S Cox Street, Suite B
Asheboro, NC 27203
July 1992
Revised January 1993
Revised July, 1993

ENVIRONMENTAL ASSESSMENT
CITY OF RANDLEMAN
WASTEWATER TREATMENT PLANT
1 Existing Environment All construction activity ,
related to the expansion of the existing City of Randleman
Wastewater Treatment Plant (WWTP) will be performed on
property currently owned by the City of Randleman in
Randolph County North Carolina This property contains the
existing 1 5 million gallons per day wastewater treatment
facility as indicated on the attached figures
The topography of the site slopes rather severely from
northeast to southwest Originally when the plant was
constructed in the 1960's the site was benched into the
side of the ridge that borders the eastern side of Deep
River Therefore the currently graded slope of the
existing treatment plant site is approximately 2% to 5%
Because this is an expansion to the City's existing
wastewater treatment plant the land use in the immediate
vicinity of this site will not be effected The land around
the wastewater treatment plant site is wooded and accessible
only through a City maintained roadway All areas around
the plant site and within the plant site are covered by
either trees grass or shrubs
The main construction activity will be located a sufficient
distance from the Deep River, such that there will be no
significant impact to the surface water quality during
construction The exact construction of the units at the
existing treatment plant site will require no major clearing
of the site and will comprise much less than one acre in
area Additionally, the earthwork required will be for
excavation of pits for structure installation and thus will
WE

RAN,DLEMAN U
`�
1
q1'Iav
�i
IJkk
���l�ll�lp�",1r
SI(,
�
"1��//
7,� �
I
���,�-� ���� �-
��6
o��III/SII �
f
ter
V(li
+s1
pill 11 tl "y,p j ,�11
1/
��� e ��j�r
;
zO
P11'
po
'OF ��I
I�r—1
It I ' /✓ �/ A /tn Il l Ili 1j1 A
�pot
ITY OF RANDLEMAN
111'O ("' 11J���I� WWIP
,
�� v)��svlIA11\\ �- V'/''/''ll rl �'lalu
`1 'l l
lij \
I'7 Z
,%'
t��
II10
Il-t�\V4
_
( �1 btV�
ljl/�

ALI
11j6
5"/ - �
RANDLEMAN 1l\\
\ 71 BASIN SERVICE 11
.Jl\l� AREA
SITE LOCATION
NO SCALE
CITY OF RAIDLEMAN
WASTEWATER TREATMENT

O
I
.II/Ol.EPS 1
IO' (M7 N
Uf.0e1C1BLS/Y �
AOQrrr]Y
J
o
i
-lr
O 41 ,
SITE PLAN
CITY OF RANDLEMAN
\ PROPOSED WWTP FACILITIES
\ AREAS DISTURBED
A �
BY CANS7RUCMN

act as their own silt basin Additional requirements
relative to silt fencing, etc will be used if necessary to
insure no siltation to any streams Because no construction
for this project will occur in wetlands or in the Deep
River, it will not be required to obtain a 404 Permit The
average ground elevation at the wastewater treatment plant
is approximately 660 HSZ No construction at this site will
take place in the 100-year floodplain Ground water is
estimated to be from 30 feet to 40 feet below ground surface
and will not present a problem during construction
2 Need for Proiect The existing wastewater treatment
plant has a hydraulic capacity of about 2 0 million gallons
per day The permitted capacity of the wastewater treatment
plant is 1 25 million gallons per day Average daily flows
currently being received at the wastewater treatment plant
are approaching the permit limit Additionally the
I continued connection of flows to the City's wastewater
interceptor system can be expected to increase the loading
` at this plant site The City of Randleman is currently
Ioperating under a Special Order by Consent until such time
as improvements can be made to the plant to being it within
Icompliance of its existing NPDES Permit In the past the
wastewater treatment plant has experienced flows to the
degree that it is unable to effectively treat the wastewater
solids that are being received Additions to this plant are
intended to provide the required treatment to handle the
additional current loading and to meet expected future
flows
Future flows to the City's wastewater treatment plant are
expected to include only the existing corporate limits and
currently served urban areas adjacent to the corporate
limits No major expansion of this plant is being
determined to meet an expansion in corporate limits A
study prepared by Hinier & Associates P A in August 1909
2-R

indicated that the City of Randleman would experience a
population increase over the next 20 years Basically the
population is expected to increase from about 2 490 in the
year 1990 to about 3,013 in the year 2010 Additionally,
some growth mould be expected in the wastewater system due to
industrial usage Currently the City of Randleman's
industrial wastewater usage is in the neighborhood of about
70 percent of the plant's capacity
Attached to this Environmental Assessment in the Appendix is
an excerpt from the previously referenced report giving
additional information relative to the current wastewater
flows and expected wastewater flows for the City of
Randleman's wastewater treatment plant
Since it is expected that the wastewater treatment plant
will continue to grow and it appears that it is currently
overloaded to the extent that it cannot treat the wastewater
effectively at this time the referenced report recommends
an upgrade to the plant for biological and additional flow
capacity Bhile the study recommended a 2 0 million gallons
per day wastewater treatment plant, it is currently proposed
to expand this plant only to about 1 495 million gallons per
day at this site If additional capacity is needed in the
future, then operating history can be used to expand the
plant accordingly ,
3 Alternative Analysis This wastewater treatment plant
was studied under the 201 Program in the late 1970's At
that time it was recommended to expand the wastewater
treatment plant at this site in lieu of other available
alternatives Reasons for doing this include
a Currently functioning wastewater infrastructure to
this wastewater plant site
3-R

b No additional wastewater treatment plant sites
were available and/or needed
c Current operating history at this wastewater plant
site was in conformance with existing land use
patterns
Other alternatives required to be considered by the
State of North Carolina include
a No Action Alternative This alternative is not
acceptable because it fails to provide treatment
for the wastewater existing in the service area
Iand fails to eleviate current problems caused by
the inability of this wastewater plant to
Ieffectively treat the wastes under its current
NPDES Permit
b Land Application Treatment of wastewater by land
application is not feasible on this project
because of the large area of land which would be
required for a 1 5 million gallons per day plant
It is expected that up to 750 acres may be
required for spray irrigation area if the
wastewater was land applied This quantity of
land would be very impractical to obtain in the
Piedmont area where slopes and hillsides typically
would make this type of wastewater treatment
impractical It would be extremely difficult to
contol such a wastewater system not only from the
land area requirements but also from the hydraulic
problems involved There would be no advantages
for land application over that currently being
employed by the City of Randleman
4-R

4 Effluent Requirements As previously mentioned the
City of Randleman is currently operating the wastewater
treatment plant under a Special Order by Consent Permit No
NCO025445 This Permit is effective until December 1 1992
The required wastewater treatment improvements are necessary
in order to continue operating the plant under previously
approved NPDES Permit limits Previous NPDES Permit limits
are
Flow
1
25 mgd
BOD
30
0 mg/l
Total Suspended Solids
75
mg/1
Dissolved Oxygen
5
0 mg/l
Fecal Coliform
1000/100
ml
Total Nickel
81
0 ug/l
Cyanide
18
0 ug/l
The fact that the wastewater treatment plant is
currently having to operate under Special Order by Consent
indicates that past performance has been below the level
required by the current NPDES Permit The Special Order by
Consent has been amended to allow a Total Suspended Solids
limit of 75 mg/1 during the term of the Consent Order
Contained in the appendix to this report is speculative
wasteload allocation obtained from the NC Department of
Environment, Health & Natural Resources that indicates the
existing limits and recommended limits should the wastewater
flow from this treatment plant be increased from 1 25 NGD to
the requested 1 75 NGD The recommended limits are much
more stringent than those existing at the plant at this
time Since the limits are essentially tertiary it will be
required to install a wastewater filter in the process train
of the treatment plant
Also included with the speculative limits is a list of
toxic limits that may be required The City of Randleman
5-R

currently has an approved pretreatment program that
regulates toxic agents that could be discharged from
contributing industrial users in the City The proposed
units shows on the site plan in this environmental
assessment will allow the wastewater treatment plant to meet
the speculative limits recommended by the NC Department of
Environment Health & Natural Resources
5 Sludge Disposal The City of Randleman currently
operates a land application system for sludge disposal The
sludge is aerobically digested at the wastewater treatment
plant site and then decanted Private contract haulers take
decanted sludge and land apply it on lands currently under
contract for this purpose to the City of Randleman The
site is approximately 10 miles from the Randleman wastewater
treatment plant site Additional land application sites are
available in this area should the need arise in the future
Part of the upgrade to the existing wastewater treatment
plant will be to add additional sludge handling facilities
for aerobic digestion of waste activated sludge
6 Environmental Consequences The preferred alternative
for this project is to upgrade and expand the existing
wastewater treatment plant at the existing site using
similar treatment process technology The following impacts
have been considered
Changes in Land Use Continued growth in the
Randleman area includes specific plans for a new
major industry to be located in the southern
portion of the City This industry is Timken and
they plan to invest about 100 million dollars in a
facility in Randleman's wastewater service area
While this industry will be contributing primarily
domestic wastewater to the system the 200 jobs
created will have a very beneficial impact on the
6 R

area economy Additionally the City of Randleman
is experiencing a need to annex potential areas
that contain several hundred septic tanks If
feasible the annexation will provide needed
wastewater treatment to a residential area
Wetlands As previously mentioned no wetlands
will be effected by this particular project since
all of the construction will be contained within
the existing fenced area of the wastewater
treatment plant site
Prime Agricultural Land There are no knovn areas
of prime agricultural land within the City's
current wastewater service area
Public Lands No public land will be effected
because all construction work will be confined to
the existing wastewater treatment plant site
Public land within the service area is extremely
limited and will result in minimal secondary
impacts
Scenic and Recreational Areas The plant is only
slightly visible from the Deep River during the
Fall and Winter and no major impact on scenic or
recreational value of the river should result
_ Areas of Archaeological or Historic Value As
previously mentioned a 201 Facility Plan for this
wastewater treatment plant was prepared in the
late 1970's An archaeological site study was
done at that time and the subsequent plant
modifications at that time were performed without
injury to any known sites Since this project is
within the confines of the same construction area
7-R

no impact to archaeological or historical sites
should result
Air Quality The treatment process to be used at
this plant is extended air activated sludge
There will be very little odor potential
associated with the liquid treatment process
Sludge also will be aerobically digested and
should present no odor problems Complaints of
odors iminating from this plant inthis past are
non-existant
Groundwater Oualitv Groundwater quality will not
be effected All process basins are fully
contained and constructed above the any known
groundwater table Theability of this wastewater
plant to serve future residences and the ordinance
requiring mandatory hook-up will result in better
groundwater quality by eliminating septic tanks in
the future
_ Noise Levels Noise level will not be increased
by the plant expansion All blower equipment at
the existing plant will be utilized for the new
upgrade It will not be necessary to increase the
horsepower for these facilities
Water Supplies There are no known water supplies
within 5 miles of the discharge of this wastewater
treatment plant Additionally the City of
Asheboro wastewater treatment plant dischraeges in
a small tributary to the Deep River just
downstream of the City of Randleman's wastewater
treatment plant
8 -R

Shellfish or Fish The dissolved oxygem level in
the effluent will be at least S mg/l This should
be sufficient to maintain fish population in the
river It is not known that there would be any
species of fish endangered by this plant location
As previously mentioned there is another
wastewater discharge just downstream of this
plant
l ldlife Habitats Because the general land use
is not changed as a result of this project there
will be a minimal impact on willdlife and their
habitats
Toxic Substances The only chemicals that will be
in contact with the environment will be chlorine
Additional measures to neutralize the chlorine
residual prior to discharge to the river will be
utilized Currently the existing wastewater
treatment plant has a flow proportional chlorine
feed system that paces itself based upon the
effluent wastewater flow During periods of low
flow and/or no flow the automatic chlorine feed
system reduces the feed rate and/or shuts itself
down completely This system will continue to
remain in operation when the new facilities are
constructed Additionally it is proposed to
install a sulfur dioxide feed system that will be
integrated into the flow control loop with the
chlorine feed system The sulfur dioxide will
neutralize the chlorine feed at the effluent to
the chlorine contact chamber prior to discharge to
the river The specific controls for feeding the
sulphur dioxide will be the same as those
currently used for feeding chlorine which are
Wallace & Tiernan, Positive Displacement
�3

Diaphragm Metering Pumps These pumps are very
accurate and allow precise control of the feed
rate Since the sulphur dioxide system will be
tied into the flow proportional control loop of
the chlorine feed system then automatic
proportioning of the feed rate with the flow will
be maintained It will only be necessary to apply
the proper setting at the chemical feed pump for
positive neutralization of the chlorine Attached
to the appendix of this environmental assessment
is a reprint of a Task Force Report to the
Environmental Protection Agency relative to
dechlorination of wastewater with sulphur dioxide
Review of this report excerpt indicates that
sulphur dioxide is the best direct reacting
chemical agent available for wide scale use in
dechlorinating wastewater Elementary kinetics of
the feed rate of the sulphur dioxide to the
chlorine residual are given in this excerpt With
this type of feed and control equipment the
chlorine residual will be reduced essentially to
zero prior to discharge at the river
Additionally the flow proportional control will
enable automatic shutdown of the chlorine feed
system should no flow be recorded at the
wastewater treatment plant The City of Randleman
has a current and approved pretreatment program
for industrial wastewater that is discharged to
the existing wastewater treatment plant However
some toxic substances such as household cleaners
paint and petroleum products may enter the system
from residential customers The City is currently
upgrading their pretreatment program and headworks
analysis to identify any potential problems in
this area
10 R

_ Eutronhicat.ion of Receiving Waters Information
currently indicates that the Deep River above the
Carbonton Dam has a severe eutrophication problem
at this time These studies have been performed
by the NC Department of Environment, Health &
Natural Resources However the proposed
expansion to this plant will increase the
treatment efficiency causing a further reduction
in the nitrogen being discharged into the stream
Additionally the operation of the tertiary filter
and central sludge return system potentially will
help reduce some of the phosphorus that is
currently being discharged from this plant
However phosphorus is not expected to be a
regulated nutrient at this plant at this time
Since the wastewater treatment level at this plant
is being increased the contribution to
eutrophication by this plant should be reduced
7 Water Quality The Deep River is classified as Class C
in water quality in this region There have been documented
historical water quality concerns in this portion of the
Deep River There are a significant number of impoundments
along the river that greatly restrict the assimilative
capacity and contribute to eutrophication and low dissolved
oxygen contents Additionally, several wastewater treatment
plants discharge into the river beginning at City of High
Point and continue south through City of Randleman, City of
Asheboro, Town of Ramseur etc These wastewater discharges
coupled with other non -point source discharges further
contribute to water quality problems experienced in the Deep
River
Expansion of this plant along with an increase in the
level of treatment should help to reduce existing wastewater
loads being placed upon the river and therefore be of
11-R

benefit to the water quality in the Deep River Also there
will be some benefit to eliminating faulty septic tank
systems in the area due to annexation or other connection
practices
8 Adverse Impacts a Ma> i at.ive Measures Construction
of the proposed upgrade and expansion project will cause
some minor adverse environmental impacts that can be
mitigated through appropriate control measures and good
construction practices Adverse impacts include
Consumption of resources during construction
activity including money, energy and construction
materials Mitigation would be to develop a
useful facility for the public
Air pollution could occur from windblown dust and
engine exhausts during construction Mitigation
would be to enforce dust control measures during
construction
Soil erosion possibly could occur Mitigation
would be to enforce strict erosion control
measures during construction
long term impacts would include the continued
expenditure of labor chemicals and energy
coupled with escalating costs for operation and
maintenance Mitigation would be to increase the
water quality in the Deep Rives and improve local
groundwater supplies
Sound construction practices and careful planning during
construction will reduce the above mentioned adverse
impar"ts All local state and federal regulations designed
for environmental protection will be adhered to
12-R

9 Secondary Imps= The major reason for this project is
to upgrade the existing wastewater treatment plant process
the investment of money by the City of Randleman for this
project will be to insure that the environmental impact will
be minimal The City will use local development controls
such as zoning subdivision regulations sewer tap permits
and building permits to prevent incompatible land uses
brought about by future growth and development
10 Summary In summary, a need has been shown to improve
the wastewater treatment plant process to alleviate
documented treatment deficiencies that are below the HPDES
Permit requirements Additionally documents contained in
the Appendix indicate the need to expand the plant to meet
future needs of the City of Randleman Since this project
is being developed to meet current conditions with minimal
increase in plant capacity it is not expected to create a
great deal of additional development in the area Other
items likely to improve will be groundwater quality and
stream quality due to improved treatment
13-R

4 0 PROJECTED PLANT LOADINGS
4.1 GENERAL.
Plant loadings are projected in order to determine the
ability of the existing treatment units to handle
future flows with possibly higher wastewater strength
For the purpose of this report, evaluation of the
treatment units and sludge handling capabilities (i e
size of clarifiers, volume of tankage) Is based upon
projected maximum month average daily flow Evaluation
of plant equipment (i a pumps, screens) is based upon
the range of plant flow that occurs between peak daily
flow and annual average daily flow
The flow projections and plant loadings contained in
this report are based upon a study of the water meter
readings and wastewater plant reports between July,
1980 and June, 1989 These flows coupled with
projections of population growth are used to develop
future plant requirements
4.2 POPULATION PROJECTION
Proper sizing of a wastewater treatment facility to
meet future needs depends greatly upon development of
accurate population growth projections Projections of
population growth are at best only a guess based upon
historical growth trends Table 4 1 indicates the
growth of the Randleman area since 1940 and compares it
with the growth of the State and surrounding Townships
Table 4 2 indicates the population projections for
Randolph County and North Carolina between 1990 and
2010 as prepared by the NC Office of Budget and
Management (NC OBM)
RANDLEKAR RN REPORT 4 - I

City of Randleman
3acx Creek Townsnip
rranxl_nville TownshlD
-eve! Cross Township
New `tartet Townsnip
0=0VICence Townsnip
Randleman Township
Randolpn County
North Caroiina
TABLE 4 1
DOPULATZON GROWTH OF SELECTED AREAS(1)
1940
+0SO1960
14M
1080
1087
Ava.
Mange
2,312
2,123
2,439(2)
5
6%
897
,223
_,608
1,359
2,170
*
35
5%
3,635
4,308
5, 042
5,250
5,530
'_2
Os
822
694
878
_,660
2,_50
*
40
4%
_,634
_ 587
1,_52
,075
5,250
3%
_, 043
_,025
095
_ 288
_,290
*
5
9%
2,63-
_,714
5,,29
4,853
5,260
*
__
2%
44,554
50, 804
6i 497
761358
911300
26
2%
5,084,41_
5,880,415
_5
7%
,_)Source U : Census Data
,:)Source Est -mated Dy NC De Dartment of Admin_strar.on
*Not ava__aD.e

TAB[ E 4
2
STATE
6 COMITY
PROJECTIONS
Avil
L920
1495
ZO00
li unp
2010 Vier heca_de
Randolph County 103,917
110,528
111,018
131,01(1 I) (,'k
North Carolina 6,633,100
1,051,621
1,412,146
0,439,060 12 n1

New population projections are shown In Table 4 3
They are based upon the followings
• Past growth trends In Randolph County,
nearby Townships and the City
• Population projections by NC OBM
• The existing water and sewer systems'
ability to promote and support additional
growth
NC OBM has projected a conservatively low growth rate
for Randolph County when compared to the growth over
the past 40 years In developing a future growth rate
for this report, a growth of 10 percent per decade will
be used for Randleman, unless otherwise noted
4.3 INDUSTRIAL GROWTH
In order to experience the population growth as
projected, it will be necessary for the
Randleman/Asheboro area to grow industrially The type
of Industry that will locate in this area cannot be
determined Currently, in the Randleman area, the
major industries are made up of textile producers,
some of which use significant quantities of the City's
potable water
Projections of industrial growth, relative to
generation of sewage flow, can only be estimated based
upon current trends and established planning of
existing industry Current Industrial trends are to
locate plant facilities that can access municipal
wastewater systems Whether oL not the industry would
RANOIENAN MI REPORT 4 - 2

TABLE 4 3
POPULATION PROJECIlOt19
1990 1995 2000 )1110
Clty of Randleman 2490 2615 2139 3011

6--e-Lvlce Clsau
Resldentlnl
commercial
Indust-rial
'Cola Is
'rAnI E 4 4
HE rERED WTI ER ( 011 3MIP I I 011
FOR SEWERED ( OMIE( 1 I 0119
Ro ofII)
Wiler
llatd
c-2llllg3_Llolls_
110v[Det.,_
00
ItIr[Alu , 119
1040
1 (I,
7)6, 1)110
1 ;, II L' , "110
119
2,
592, 500
1, IIhI,lI1111
12
34,
100, 300
12, 1111", 1100
1199
41,549,600
fill, ')I2,1011
111 Ro of connetllotls Is Ilie averago vI the mmlh•. rip loi I((I

be a major contributor of wastewater cannot be
determined with much confidence Based upon
Randleman's current situation at the wastewater
treatment plant, this report will assume that future
growth from new industry will be less water intensive
than in the past On the other hand, the City has been
advised that Jockey International proposes to double
its wastewater discharge to a projected quantity of
170,000 gpd by 1990 and this projection has been
included into flow estimates of this report.
4.4 WASTEWATER FLOW PROJECTION
The projected wastewater flow Is a function of
residential, commercial, and industrial growth and
Increasing infiltration and Inflow of groundwater to
the system The following subparagraphs briefly
discuss the steps taken In determining the projected
maximum month average daily flow
Table 4 4 lists the metered water consumption for
customers on the sewer system for the bimonthly periods
of Nov/Dec, 1988 and Mar/Apr, 1989 These periods were
selected because they coincide with the low flow and
high flow months recorded at the wastewater treatment
plant Table 4 5 lists the daily wastewater flows
recorded at the wastewater treatment plant and
summarized important Information about the flows
Relational data contained in these two tables, along
with population projections, will be used to project
future plant flow requirements
4 4 1 Residential Water Use
Table 4 4 is used to determine the average daily flow
per capita for residential users The table Indicates
RANm ntnN uW PFPOPI 4 1

OAY/MTH
1
2
3
4
5
6
7
A
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
MTHLY TOT
AVG DAY
MAX DAY
MIN DAY
MAXIAVG
TABLE 4 5
DAILY WAS7 EWA 1 ER FLOWS (MOD)
Jun-88 JUF88 Aug-98 Sep-88 Oct-88 Nov 88 Dec-88 Jan-89 Feb 89 Mar-89 Apr89 I lei 89
1 15
0 52
1 10
106
0 65
1 16
0 99
0 73
124
1 37
0 87
1 36
110
023
112
097
045
110
071
119
128
121
05t
101
100
0 22
110
0 72
136
128
0 30
103
0 93
1 15
1 30
0 94
074
0 21
1 10
050
102
1 10
0 38
1 29
0 38
0 71
1 j0
0 89
0 41
0 21
1 05
0 49
103
0 90
0 98
1 10
066
0 71
1 30
1 13
1 10
0 21
0 77
1 06
0 90
0 45
1 01
0 85
1 27
156
1 23
0 97
1 18
0 23
0 48
1 10
0 91
0 99
100
0 61
1 18
1 45
1 49
0 82
110
030
1 14
110
0 57
1 00
104
0 52
1 06
1 19
1 51
0 83
123
031
109
1 35
0 26
1 13
1 00
1 21
1 11
1 23
1 21
1 17
i Ol
055
1 10
0 96
0 91
1 23
0 66
1 31
0 80
0 87
1 15
1 08
094
113
111
091
095
101
041
121
050
055
124
096
0 42
1 10
1 13
104
0 90
0 70
0 98
1 28
0 47
0 59
1 22
0 96
1 16
110
0 79
1 10
0 88
0 45
0 98
1 06
1 13
1 09
1 26
0 60
112
116
0 45
109
0 90
1 16
1 03
0 65
1 19
1 11
1 26
0 17
101
1 12
1 11
104
0 52
1 04
0 96
0 52
1 33
1 36
1 13
0 95
106
0 82
1 21
104
0 35
1 18
0 77
1 26
1 20
1 26
0 61
0 97
1 12
0 49
1 15
0 79
0 99
1 28
0 23
1 15
1 16
0 92
1 29
0 97
075
1 17
1 22
0 46
1 21
1 00
0 39
1 28
0 35
0 79
1 37
0 99
038
112
1 24
1 14
104
0 84
0 87
1 12
0 68
0 62
1 28
1 02
125
116
1 10
1 06
1 21
0 49
0 92
1 03
1 71
1 40
1 24
0 66
111
112
1 00
104
107
106
0 85
0 48
2 02
1 37
1 31
0 29
108
1 11
1 15
0 96
0 97
104
0 73
0 47
1 68
1 57
0 97
0 92
113
082
1 14
106
0 87
0 79
0 48
1 31
1 24
1 97
0 52
1 00
113
047
116
076
094
031
031
120
071
120
123
095
0 98
121
1 10
0 85
0 B9
0 26
0 27
1 25
0 49
0 69
129
1 06
0 96
106
1 13
0 97
0 95
0 35
0 25
1 25
0 74
0 74
130
1 27
103
117
084
100
1 18
0 75
0 26
081
1 82
1 30
1 U
0 42
103
108
063
103
0 97
1 11
0 27
0 46
1 73
1 41
1 28
0 21
0 98
1 12
1 10
106
0 BO
1 04
0 26
0 31
1 37
0 70
0 85
0 64
0 98
1 05
096
0 39
0 99
0 32
1 24
1 34
0 35
0 96
0 97
1 13
151
0 52
1 19
1 27
1 03
29 30
24 47
32 00
28 67
27 56
27 19
20 13
30 37
30 06
35 47
33 77
27 51
098
079
103
096
089
091
065
098El
114
113085125
1 21
1 2 4
1 35
152
1 28
104
1 31
1 9 7151
136038
136128
021
045
046
026
026
023
031
055035
1 53
1 20
141
1711
41
1 60
134
1 72
1 3 4
1 53
ANNUAL MAX DAYMI
ANNUAL AVG DAY
ANNUAL MAXIAVG
AVG DAY -MAX MTH

that about 85 6 percent of the sewered customers are
residential users These customers accounted for about
21 6 percent of the water used in Nov/Dec, 1988 and
about 27 4 percent used in Mar/Apr, 1989 Averaging
the two periods together and assuming that 100 percenL
of the population is served (2439 people), the per
capita water usage would be about 81 gallons per day
For the purposes of projecting sewage flow, a per
capita water usage of 80 gpd will be used This number
Is reasonable and is within normal limits for
residential customers living within corporate limits
4 4.2 Commercial Water Use
Table 4 4 indicates that the commercial usage category
accounts for about 11 6 percent of the sewered
customers The commercial customers accounted for
about 5 5 percent of the water used in Nov/Dec, 1988
and about 7 6 percent used in Mar/Apr, 1999 This
report assumes that the growth of commercial
establishments in the Randleman area will continue To
meet the expected commercial growth, this report will
assume that the sewage generated by commercial
enterprise will maintain iLs proportional share of Lhe
total flow
4 4.3 Industrial Water Use
The industrial water usage shown in Table 4 4 accounts
for about 1 percent of the total customers.
Conversely, industry by far is the largest water user
in the Randleman system, accounting for an average of
about 68 9 percent of all water used Fluctuations in
the amount of industrial business in Randleman can have
a significant impact on the water and wastewater flows
for this system This report assumes that steady
RANDIFHAN NW Rfpnni 4 — 4

Industrial growth will continue in the Randleman area,
but, as mentioned previously, new industry locating in
the area is not expected to be of the large water using
type This report, however, does Include the known
projection of Jockey International to double its
current discharge to 170,000 gpd by 1990 For the
purposes of this report, an allowance of 20 percent of
the plant capacity will be allocated for industrial
growth
4 4 4 Other Flows
Other flows into the wastewater system that contribute
to the required size of the wastewater treatment plant
includes
• Current Commitments
• Annexation
• Infiltration/Inflow
Of the items listed above, infiltration and inflow pose
probably the most significant problem Lo the City of
Randleman Table 4 6 compares the total water meter
readings with the wastewater flows recorded at the
wastewater plant
Inspection of Table 4 6 indicates that during periods
of wet weather, the flow to the wastewater plant can he
greater than the amount of water metered This
additional wastewater flow is generated by stormwater
and groundwater entering the wastewater collection
system The comparison in Table 4 6 is somewhat
distorted by the fact that the periods for the slow
records for water vs wastewater do not coincide
RANDLEMAN WN REPORT 4 - 5

Per lod
Jul/Aug, 88
Sep/OcL, 88
Nov/Dee, 88
Jan/Feb, 89
TARI E 4 6
CONPARISON OF WAIFII 6 SEWER FLOWS
Wat er
BIIIed
50, 931 , 1100
51, 44 1, 900
4 1, r,49, 600
41,846,100
liar/Apr, 89 50,532,300
Nay/Jun, 89 56,910,000(1)
ToLal 248,306,900
I11 Not. Included In lot -al
9(,W( r
I Low
'r6, 410,0110
5 fi, 2 10, 1)1)(1
41 1)(I,0(11)
60, 4 10, 001)
69,240,000
(haLa Not Avatl ►
209, G91), 1) 1) 11
Ral lu nl
i/W
II
0 41)
0 '1')
1 14
1 11
1 11

exactly Nevertheless, llie total wastewater flow
metered was larger than the total water metered by
about 17 percent
Normal practice for new systems is to allow about 10
percent for infiltration and inflow This report will
allow about 15 percent reserve for infiltration/inflow
to account for potential growth along the existing
wastewater collector system
Investigation of the extent of the Infiltration/inflow
is beyond the scope of this report There are programs
and procedures that can be set up to find some cause of
infiltration and inflow Many of these problems can be
minimized with City maintenance personnel; however,
experience shows that reduction is costly and
chlorination is virtually impossible
4 4 5 Summary
Using the assumptions contained in the above
subparagraphs, the projected wastewater flows for 1990,
2000 and 2010 are summarized in Table 4 7 As
indicated, the required plant capacity is projected to
be about 1 54 mgd by the year 2010
There is no real reserve built into the projected
wastewater flows Should more aggressive annexation
occur or industrial growth increase more rapidly Lhan
anticipated, the City would have to make additional
expansions For conservation and economy of expansion,
Minier 6 Associates recommends that the plant be
designed for 2 00 mgd capacity This would allow about -
a 30 percent reserve hydraulic capacity beyond the
projected year 2010 capacity
RANNIENAN NH REroai 4 - 6

TABLE 4 7
PROJECTED 11AXIMIH NORM
AVERAGE DAILY FIOW (I1GD)
Sour ce
129Q
2op0
2010
Residential
0
720
0
2',0
(1
215
Commercial
0
060
0
015
0
087
Industrial*
0
696
0
812
0
982
III I It rat 1oil/ Inflow
0
150
0
164
0
loll
Annexation/Other
0
O0O
0
020
(1
020
Total
1
142
1
141
3
539
*Industrial flow proje(Llons Include the advlgory Lo the (11y
that Jockey Internallonal propose9 to increase IL9 Flow by
85,000 GPD by 1990

As indicated in Table 4 7, an expansion of the
wastewater treatment facility to a hydraulic capacity
of 1 50 mgd would marginally suffice the City's needs
until the year 2010 The Engineers, however, feel that
expansion to 2 00 mgd capacity would be the preferred
alternative for the following reasons:
(a) Addition of 1 00 mgd would be considerably
more cost effective, as the cost per gallon
would be greatly reduced for the larger
addition An analysis of costs will be
presented later in this report
(b) A review of the present facility site
indicates that only one more expansion can be
constructed at that location; therefore, it
seems prudent that the City would best
utilize the space available by constructing
the larger addition
(c) Although the year 2010 seems long In the
future at tills time, the City should
recognize that any planned expansion would
not be "on line" until 1991-92 at the
earliest If expansion to a 1 50 mgd
capacity were chosen, then planning and
design of a costly new treatment plant (new
site) would have to be initiated in year
2007, only fifteen years later, in order for
additional capacity to be available when
needed
4 5 WASTEWATER STRENGTFI
In addition to flow, BODS and TSS will be evaluated for
the existing and proposed wastewater plant By
RARHIFHAN RN RFPnnr A 7

projecting these concentrations, the daily organic load
entering the plant (in pounds per day) is calculated by
multiplying these values by the projected plant flow
The projected strength is shown in Table 4 8 and is
based upon an inspection of plant records The
projected loadings were determined by applying
anticipated values for BOD5 and TSS to Lhe projected
flows
RANDLEHAN VM REPORT 4 - 0

TABLE 4 0
PROJECTED PLANT LOADING
Vaumeter
1990
2000
2olo
Wastewater Flow
(mgd)
1 142
1 341
1 519
©ODS, PPd
PPm
3,090
325
3,910
350
4,490
351)
TSS, PP(I
PPm
1,190
125
2,230
200
2,560
201)
Peak Factor
2 0
2 11
2 0

C.xhih,t 1
the following article was reprinted from a Task Force Report to the EPA
"DISINFECTION OF WASTEWA[ER" EPA-430/9-75-012 dated March 1976
Dechlorination with Sulfur Dioxide (S02)
General
Since chlorination of wastewater causes chlorine residuals that can be
toxic to aquatic life, dechlorination may have to be practiced in some situations
Sulfur dioxide is the best direct reacting chemical agent available for
wide scale use in dechlorinating wastewater it is available commercially as
the liquified gas and is much more soluble than chlorine in water (1 0 lb/qal
at 60of) Upon dissolving sulfur dioxide in water a weak solution of sulfurous
acid is formed The dechlorination reaction of sulfur doxide with both free
and combined chlorine residuals is nearly instantaneous (11) Contact
chambers are not necessary but rapid and complete mixing at the point of
addition is important The reaction weight ratio of sulfur dioxide to
chlorine is 0 9 1 0 which converts chlorine to the choride ion The sul-
fur dioxide dosage needed is that sufficient to neutralize the residual
chlorine Sulfur dioxide appears to be effective in preventing toxic stress
to receiving water biota There is no reason to expect that its use will
exert any effect on chlorinated organic compounds resulting from disinfection
with chlorine However, research is required to determine if this assump-
tion is correct
Status
Sulfur dioxide has long been used to neutralize chlorine in treatment of i
drinking water, but its use for dechlorination of wastewater is ,lust getting
underway Information obtained in October 1974 on four wastewater treatment
plants with average daily flows ranging from 4 0 mgd to 160 mgd indicated no
serious problems in dechlorinating with sulfur dioxide Of these plants, the
Sacramento City plant (flow 50 mgd) had been using sulfur dioxide dechlorina-
tion for 9 months (12)
Equipment and Chemical Supplies
Equipment for feeding sulfur dioxide is very similar to that used for chlor-
ine and no serious difficulties in the supply situation for equipment or sulfur
dioxide are anticipated
Safety
Sulfur dioxide is a hazardous highly corrosive and extremely irritating gas
that causes skin and eye burns and damages mucous surfaces It is self -warning
It is less prone to rapid volitalization than chlorine (vapor pressure of sulfur
dioxide at 70of is 35 psi while the corresponding value for chlorine is 90 psi)
Handling precautions are similar to chlorine but the lower pressures of sulfur
dioxide are less prone to cause leakage problems
Reliability
Sulfur dioxide is a reliable chemical agent for removing residual chlorine
from water and wastewater As sulfur dioxide is a reducing agent, careless
operation can lead to reduced dissolved oxygen content of effluents As a re-
sult, some states are requiring reaeration to increase the dissolved oxygen
content of the effluent when sulfur dioxide is used to dechlorinate

17.34 FRU1
-1-
b 9I94i06471
I11 M RaNDLEMN
70
Request No, sM
f=? iN1117 roR NABTYLO" ALL40MIONS
raeili�v Now tMty of Randleaun MMT9
NPDCS No. M00025115
Type of Waste 142.s1 Dosaeatio/57.1j indu4trial
facility atatug
I W Ring
Permit status
sNoditicatiou
Receiving stream
-Deep Riogr
Stream Claseificatioa:a
aubtapin
;Q3_95-09
county
:Randolph
Regional Office
:Kinston -Belem
Ragaestor
:itoeanne Barone
Date of Request
:10/9/90
20po Q4ad
tD19Se
Maateload Allocation Surrmary
RECEIVED
N C. Dept, NRCO
JAN 2 S ingt
Winslr-•t,jem
R@VIQnes UIJIC9
atraam tharantgriarlaq,
VSOa #02.1001.1325 Date 1988
Drainage Ares: 160 aq.mi.
01, V 7910t 5 gis
(linter 7Q10i 13 of$
Avsrpgs Plgyt 171 of$
30QA. 23 off
NArl IAMIn MA rngunMnd An l nnrnnnr In nrTmI ttrd f l nv f rnm 1.15 lira to 1 75
huu tr"Y nave lnalnatea a suture neen Tor up to s S pvlu) larttary
treatment is recommended for any expansion in wseteflow at the Randle"D
mrTP. New and expanding dischargers in the Peep River b4sla ate receiving
atringent limits clue to water quality problems In the Deep Rivet,
(approech talon( oorrespondenoe with region, Ukr etc,)
NABTRLOAD SM? To Uhl INajor) Y_ (y or N) W(V fLI ufolt'i b! Styl0 6Pq
(if yve# than ettaoh vabetsati0, t0xias apzeadanaet, copy Of aodelf or
LC not modeledt then old assumption that were R. sad deacrSDtlon
Of how Site into baeinwide plan)
940010msaded by• tse_. Dates/
t
Reviewed by
lnattsam Aesesemsnt:s� Dates__{J_�1�1__
Regional supervisor: Date -
Permits i rn0inseringl __-- Cates
RXTURN TO TBCIWXCAL StRVICES By. FEB 1 ` 1991

Haquaat Hoy SS9� reabda.rl�
1160teflow (MOD))
goo$
NH3N
Do
Too
r6oal Coliform U100 ml) =
ps (Su)1
oil a area•• Imq/1):
T9 (mq/1) p
SN Imq/1)1
Na0et1oa IM4D).
INN IM911) i
NN3M loq/11I
Do
Too
Panel Conform J1 (/100 ( Rd),
PH foul;
Oil 1 (3reaea I29/1)..
TV (mq/1) :
TN (mri/1) :
Inatream Data
J vo nia Tonicity
Chlorine
Hvtrieot Seaaitive paters
now
NOW 7010 flow data
"ling $tudise
Nee facility information
CQ1N4"Tou" 9a1W6?"J
Monthly Avegage
sum or/Minter
1125
21/30
2/woaito:
5
30
1009
s-9
ao limit
monitot
monitQ;
Monthly Average
suawisr/Minter
1176
b/10
214
6
30
200
6-9
no limit
monitor
awpltor
Daily Nellie=
Daily Ma>simvM
Y DOM NH3-110 Do
s Chlorine
It BODS, NN3-Mr Do
Other (aaplanetion of any modifications to past modeling analysis
iaoluding new flows* cateef field data$ intecooting dj*6hIrgeer uto.)
(Sae page for Mieoallaneous and spacial conditions if apply)

d ri LB 1ti y b 473 till Ill H\PL)Lh ViV LuN
t2136 FROM TO r w
-a- Request No. 5111
"XICa
Tosicty I.imitl Chronic, Quarterly Mwnitorirkg tehedule:
JAM, AAA, MM, OCT
existing t.lmit: 201
Neeoansaded Ylrnit: 354
S- ■ lne 4,
!� Cadmium
wit■
lug/111
Chtmium
lug/al t
Cvppes
(ug/1)t
aiav
(u9/1)i
thlo=ine (uq/111
Daily Ha-has
Cadmium
lug/l):
ohzomium
(Mg/1):
Copper
twg/l1-
givke1
(ug/i).
Lead
(uq/l)1
Ginn
jug/III
Cyanide
lug/1)1
Cblorinq
!ug/1)1
i rluvride
(ug/1)r
tug/l)l
ietrocaiorantuylone tug/1) :
L►lVAinum
Diml2-etbylhexyl)Fhthalat�
Cblozidaa
bimit■ Changes Due to.
Change in 7p10 data
Chaags in otx4am olessilieation
)relocation of diachaxge
Change 1A wasteflow
New pretreatment information
Failing toxicity tout
priority pollutant analyei♦
monitor
monitor
monitor
wr4tor
monitor
Daily Maximum
,005.7
AW 42
monitor
4W,280
071
monitor
014
02m
,*Is
monitor
monitor
monitor
monitor
tonaite toxicity study, interaction, etc.)
Paraaaterle) Alfeeted
Cd, Cc, Ni, Pb, C11
Fluoride, nlamicum,
Tetzachloxoschylene,
Y1sl�-�ehyl.hesya)Ontbelete,
Chlorides
". M%3CLLLANE0U3 INFORMATION t SPECIA,L COMMONS
^S �,
;' tian pertinent to the zanewel or new permit !oz this
�. 1T r� rr onehip to the eaainwide management plan

I� $ f�1f�dA9131i1 ITI (IF RINULEhIN n `r a,r Requaet P0� bi98
I II
!� I11s�AtAN )wNITOAINa llYpuIwlsNz>i
E'I UpotroaM: Y Lovotionl 100 loot upstream
Doawstropm: Y We%tionl 1,1 POOP Rivor: above Northville Dam
2.) Deep River, above tAe aoaflggnce with
I'I Haskettq Crook
PARAIIRTRA81 DOt TWf CONDf PRC►L COLIPOArf1
(� ipOaial InatreaM Monitoring l000tlono or sonitoring frequeneio@1
The two downstream monitoring site* are roWired to detemine the extent of
III the DO sag. Two *ego are predioted by the Level-p model. One above the
dame and the vocond 2 miles below the discharge.
I'll SPZCI" XNSTRUC7I0MA OR CONDITIONS
I
$09DU14 RMIUMTS:
III (for M or region to r000maend time from for implamsnting now limits)
III ADDITIONAL •RIVI wm" COMMUTS:
Additional Information ottachad7 (yes or no) I a, explain attpchm ate.
7#0411Y l4s I�Wj '
11 Ti wRs s�r.r�csf - ��'sad+•raf i e►•+...r�:••.
Scls�►►�f'c
I EI nad(di