NC0085359_Wasteload Allocation_19960216

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0085839
Twelve Mile Creek WWTP
Document Type:
Permit Issuance
(Wasteload
Allocation)
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 16, 1996
Whim document iss printed on reuse paper. - igpnore any
content on the reirerse aside

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0085359
PERMITTEE NAME:
Union County Department of Public Works
FACILITY NAME: /
Facility Status: Proposed
Permit Status: New
Major Minor
Pipe No.: 001
Design Capacity: 2.5 MGD
Domestic (% of Flow): 100
Industrial (% of Flow):
Comments:
RECEIVING STREAM: Twelve Mile Creck
Class: C '
Sub -Basin: 03-08-38
Reference USGS Quad: H 15 NE
County: Union
Regional Office: Mooresville Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class: 1 I I
Classification changes within three miles:
Requested by: Greg Nizich6'5k)
Prepared by: aiLWJ �l':�r/O✓rr�
Reviewed by: ��G't�(2ry11:t'r'./00Y^— Date
`-",s;;D� (5)/33 vv;�/4.(Wj
(please attach)
Date: 11/28/95
Date: Z
Modeler
Date Rec.
#
St1/4A13
11 zs (1S
O.�"
Drainage Area (mi2 ) % (o,att
Avg. Sireamflow (cfs): (q
7Q10 (cfs) Q, (i Winter 7Q10 (cfs) 45 30Q2 (cfs) Z , 5
Toxicity Limits:.IW 7 0 % Acu oni
- 2--we = /G' %
Instream Monitoring:
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Locations:
Parameters:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml): 200
pH (SU): 6-9
Residual Chlorine (1.tg/1): 17
Chronic Toxicity test @ 90%
Approx. 50 feet upstream of outfall
1) 0.25 miles downstream of outfall
(before confluence with first trib.)
2) downstream at SR1301
D. O., Temp., Cond., pH, fecal
Monthly Average
Summer Winter
2.5 2.5
5 10
2 4
6 5
30 30
200
6-9
17
WQ or EL
WQ
WQ
WQ
EL
WQ
EL
WQ
Comments:

COARSE
SCREEN
INFLUENT SCREENING
PUMPING AND GRIT
REMOVAL w
0
0
to
z
w
BACKWASH
DENIT.
TANK
OXIDATION
DITCH
SLUDGE
SECONDARY
SETTLING
SLUDGE
HOLDING
EFFLUENT
FILTERS
BACKWASH -�-�
SYSTEM
CHLORINATIOII
PLANT..--{ 1--
REUSE
CHLORINE
FEED
RETURN AND WASTE
SLUDGE PUMPING
r TO LAND APPLICATION
SELECTED ALTERNATIVE
ULTRA —VIOLET
DISINFECTION
REAERATION
TWELVE MILE CREEK
SCHEMATIC OF WASTEWATER FLOW
TWELVE MILE CREEK
WASTEWATER TREATMENT PLAN
UNION COUNTY, NC

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requester:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Twelve Mile Creek WWTP
NC0085359
Domestic - 100%
Proposed
New
Twelve Mile Creek
C
03-08-38
Union
Mooresville
Greg Nizich
11/28/95
H15NE
1
47
rCQ �k1J
Request #
83W .C. DEPT. OF
ENVIRONM ENT, HEALTH,
& NATURA:. RESOURCES
JAN S 11996
UiVrION OF ENVIRONMENA.l U114AGEhiENT
"OORESVILLE REGIONAL OFFICE
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
0214690000
11/12/93
76.8 (76.5@station)
0.0
1.5
69
2.5
100
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
McKim & Creed Engineers requested flows at SlIs gauging station (NC16) in 1993 (request
no. 91554). As of 1/96 this flow request was not in the'naster file. A copy of the flow estimate
provided by USGS is in the WLA file. Advanced tertiary limits are recommended per 15A NCAC
2B .0206 (d) (1). Instream monitoring is recommended in order to record the impact the discharge
is having on the stream. Instream data may be useful for estimating future water quality impacts if
the facility ever applies for an expansion. The outfall is located approx. 0.35 miles downstream of
the gauging station hence the slight increase in drainage area as compared to the drainage area
reported for the gauging station.
Special Schedule Requirements and additional comments from Reviewers:
Gay'i75.m /// 7 7 17U y e4 Ci7 / 1Z 04t1(11,0)
ll''1 /oy Aff - /D7tJ %- 'rnQ-/-e5 %h (4 /ere Chi y - .%
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Lio
Permits & Engineering:
RETURN TO TECHNICAL SUPPORT BY:
Date: /Z5A,
:r°.P Date: 1 '7 ('
1: Date: (77 L
Date: 2/2(c6.
FEB 2 " 1996

2
CONVENTIONAL PARAMETERS
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 2.5 2.5
BOD5 (mg/1): 5 10 WQ
NH3N (mg/1): 2 4 WQ
DO (mg/1): 6 6 5 WQ
TSS (mg/1): 30 30 EL
Fecal Col. (/100 ml): 200 200 WQ
pH (SU): 6-9 6-9 EL
Residual Chlorine (14/1): 17 17 WQ
Chronic Toxicity test @ 90%
Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.
INSTREAM MONITORING REQUIREMENTS
Upstream Location: Approx. 50 feet upstream of outfall r.
*Downstream Location: V 0.25 miles downstream of outfall C be re. Conclkevtle wi4-!1 }`-4- r;b01-tmar
Parameters: D. O., Temp., Cond., pH lea& l Co40 rws-
Special instream monitoring locations or monitoring frequencies:
Region, please comment on accessibility to instream monitoring locations.
•DiW 1accche-vdau"n. c_ryte 5PI i'3o
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

Facility Name 1 iV e /'e f1 rl4- C re-e. `2 W w-rP Permit # Nt 0O55 359 Pipe # 00/
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is 90 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
ru?/•/ /1'fa.,r , , t& /4 V . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 &,, 0 cfs
Permitted Flow 2 .5 MGD Recommended by:
IWC /00 % ��,1
Basin & Sub -basin On' -- 0`t' _ ? g 2��✓ A 6 i
Receiving Stream i c'e /✓e /I�; C.r iz _
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REQUEST NO: 91554
SOURCE: CONSULTANT ACTION: EXISTING
SITE ,40: 8 DATE: 11/12/93
STATION NUMBER: 0214690000 TYPE STATION: 01
STATION NAME: TWELVEMILE C NR WAXHAW, NC
LOCATION: AT NC 16 AND 2.5 MI N OF WAXHAW, NC
LATITUDE: 345708 LONGITUDE: 804522
QUADRANGLE NUMBER: H15NE
COUNTY CODE: 179
STATE CODE: 37 DISTRICT CODE: 37
HYDROLOGIC UNIT CODE: 03050103 NRCD BASIN CODE: 030838
DRAINAGE AREA: 76.5 SQ MI
AVERAGE FLOW: 69. [B]
7Q10 MIN FLOW: 0.03 [A]
(SUMMER)
30Q2 MIN FLOW: 2.5
7Q10 MIN FLOW: 1.5
(WINTER)
7Q2 MIN FLOW: 1.1
NOTES:
(A]
(A]
[A]
[A] Estimate is based on records collected at or near the site.
[B] Estimate is based entirely on runoff observed at nearby streams.
[C] Estimate based on procedures given in Open -File Report 90-399
"Low -Flow Characteristics of Streams In North Carolina"
[D] Estimate based on procedures given in Open -File Report 90-399 and
in conjuction with records collected at or near the site.
***** These data are provisional pending approval by the Director,USGS ******
REMARKS:
REQUESTOR--MCKIM & CREED ENGINEERS
Entered by: AF
Fee charged: 100
---,�•or nRrSd� --

SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Greg Nizich
Date: December 20, 1995
NPDES STAFF REPORT AND RECOMMENDATION
County: Union
Permit No. NC0085359
PART I - GENERAL INFORMATION
1. Facility and Address: Twelve Mile Creek WWTP
PO Box 987
Monroe, NC 28110
2. Date of Investigation: 12/15/95
3. Report Prepared By: Todd St. John
4. Persons Contacted and Telephone Number: Mr. Mike Shalati [phone]
5. Directions to Site: Travel 177 South to Harris Blvd. exit. Travel east on Harris Blvd. to
Highway 74 (Independence). Turn left on Highway 74 and travel to Highway 51. Travel
south on Highway 51 to Highway 16. Tum left on Highway 16 and travel approximately 10
miles to WWTP which is on the right.
6. Discharge Point(s). List for all discharge points:
Latitude: 80° 45' 44" Longitude: 34° 57' 01"
Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on
map.
U.S.G.S. Quad No.: H15NE U.S.G.S. Name: Catawba NE NC -SC
7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:

8. Topography (relationship to flood plain included): Site is on top of a knoll. This site is not
in a flood plain.
9. Location of nearest dwelling: Greater than 1000 feet. Site is currently used for spray
irrigation of treated effluent.
10. Receiving stream or affected surface waters: Twelve Mile Creek
a. Classification: C
b. River Basin and Subbasin No.: 030838
c. Describe receiving stream features and pertinent downstream uses: The receiving
stream is slow flowing with a sandy bottom and many natural obstructions. The
stream bed is about 25-30 feet across with steep, high banks. During the site visit the
water depth appeared to be greater than 2 feet. The stream appeared to have typical
class C uses downstream from the proposed discharge point.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 2.5 MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater treatment facility? N/A
c. Actual treatment capacity of the current facility (current design capacity)? N/A
d. Date(s) and construction activities allowed by previous Authorizations to Construct
issued in the previous two years: N/A
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities: N/A
f. Please provide a description of proposed wastewater treatment facilities: The
proposed facilities will consist of coarse screening, influent pumping, screening and
grit removal, a denitrification tank, an oxidation ditch, secondary settling, a sludge
holding tank, effluent filters, UV filtration, reaeration, and a chlorination tank for
plant reuse (not for discharge).
g. Possible toxic impacts to surface waters: Proposed WWTP has UV sterilization and
no industrial users at this time.
h. Pretreatment Program (POTWs only):
Page 2

in development: approved: POTW has approved program
should be required: not needed:
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM permit No.: Land application
is one of the proposed disposal options. Union County already has several permitted
land application sites (WQ 0007486). However, the permit only allows sludge from
the Crooked Creek WWTP to be disposed at these sites.
Residuals Contractor: -
Telephone No.:
b. Residuals stabilization: PSRP: undetermined
RFRP:
Other:
c. Landfill:
d. Other disposal/utilization scheme (specify):
3. Treatment plant classification (attach completed rating sheet): Not enough information to
adequately rate; however, it appears the facility will be a Class IV
4. SIC Code(s):
Wastewater Code(s) of actual wastewater, not particular facilities, i.e., non -contact cooling
water discharge from a metal plating company would be 14, not 56.
Primary: 01 Secondary:
Main Treatment Unit Code: 10103 (as proposed)
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests: None
3. Important SOC, JOC or Compliance Schedule dates: N/A
4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge options
Page 3

r
available. Please provide regional perspective for each option evaluated.
Spray Irrigation: See recommendations.
Connection to Regional Sewer System: N/A
Subsurface: See recommendations.
Other Disposal Options: N/A
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
The Union County Public Works Department has applied for an NPDES to discharge treated
municipal wastewater into 12 Mile Creek.
Union County is experiencing rapid growth and is in need of waste treatment capability. It
is difficult to place septic systems in this area due to shallow bed rock (shale). The proposed
WWTP will be built on an existing, operating spray irrigation site. The construction of the WWTP
will result in the destruction of some of the spray application area. This will result in a decrease in
the overall amount of treated effluent that can be applied.
The proposed plant has tertiary treatment capabilities and will also include BNR and possibly
BPR. The proposed plant also includes UV disinfection instead of chlorine disinfection lessening
the chances of toxicity problems. At present there are no industries which would be served by this
plant.
Therefore, this Offices recommends that the subject NPDES permit be issued.
�
J
Signature of eport Preparer
Water Qua i Regional Supervisor
/ 2 2 ..1-
Date
Page 4

SOC PRIORITY PROJECT: Yes_No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Greg Nizich
Date: February 8, 1996
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT
REPORT AND RECOMMENDATIONS
County: Union
Application No. AC0085359
(Permit No. NC0085359)
PART I - GENERAL INFORMATION
1. Facility and Address: Twelve Mile Creek WWTP
PO Box 987
Monroe, NC 28110
2. Date of Investigation: 12/15/95
3. Report Prepared By: Todd St. John
4. Persons Contacted and Telephone Number: Mr. Mike Shalati, Public Works Director
[phone]
5. Directions to Site: Travel I-77 South to Harris Blvd. exit. Travel east on Harris Blvd. to
Highway 74 (Independence Blvd.). Turn left on Highway 74 and travel to Highway 51.
Travel south (right) on Highway 51 to Highway 16. Turn left on Highway 16 and travel
approximately 10 miles to WWTP which-ison the right.
6. Discharge Point(s). List for all discharge points:
Latitude: 80° 45' 44" Longitude: 34° 57' 01"
Attach a U.S.G.S. map extract and indicate treatment facility site and discharge point on
map.
U.S.G.S. Quad No.: H15NE U.S.G.S. Name: Catawba NE NC -SC

7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:
8. Topography (relationship to flood plain included): Site is on top of a knoll. This site is not
in a oo:
9. Location of nearest dwelling: Greater than 1000 feet. Site is currently used for spray
irrigation of treated effluent.
10. Receiving stream or affected surface waters: Twelve Mile Creek
a. Classification: C
b. River Basin and Subbasin No.: 030838
c. Describe receiving stream features and pertinent downstream uses: The receiving
stream is slow flowing with a sandy bottom and many natural obstructions. The
stream bed is about 25-30 feet across with steep, high banks. During the site visit the
water depth appeared to be greater than 2 feet. The stream appeared to have typical
class C uses downstream from the proposed discharge point.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 2.5 MGD (Ultimate Design Capacity for
Phase I)
b. What is the current permitted capacity of the wastewater treatment facility? 2.5
MGD
c. Actual treatment capacity of the current facility (current design capacity)? N/A
d. Date(s) and construction activities allowed by previous Authorizations to Construct
issued in the previous two years: N/A
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities: N/A
f. Please provide a description of proposed wastewater treatment facilities: The
proposed facilities will consist of an influent pumping station with coarse screening,
mechanical screening and grit removal (The mechanical screening and grit removal
may be postponed until expansion to 5 MGD in which case a manual bar rack in a
bypass channel will provide screening.), primary flow metering, a fermentation tank
followed by anoxic reaction section with mechanical reaeration, a mechanically
Page 2

g•
aerated oxidation ditch, two secondary clarifiers, an aerated sludge holding tank, two
"granular media" tertiary filters, UV filtration, cascade reaeration, and a chlorination
tank for plant reuse (not for discharge).
Possible toxic impacts to surface waters: Proposed WWTP has UV sterilization and
no indu ia1 iisen at this In ; therefore, potential toxic impacts appear to be
minimal.
h. Pretreatment Program (POTWs only):
in development: approved: POTW has approved program
should be required: not needed:
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM permit No.: Land
application is one of the proposed disposal options. Union County already has
several permitted land application sites (WQ 0007486). However, the permit only
allows sludge from the Crooked Creek WWTP to be disposed at these sites.
Residuals Contractor:
Telephone No.:
b. Residuals stabilization: PSRP: X
PFRP:
Other:
c. Landfill: N/A
d. Other disposal/utilization scheme (specify): N/A
3. Treatment plant classification (attach completed rating sheet): Class IV
4. SIC Code(s): 4952
Wastewater Code(s) of actual wastewater, not particular facilities, i.e., non -contact cooling
water discharge from a metal plating company would be 14, not 56.
Primary: 01 Secondary:
Main Treatment Unit Code: 10103
5. Important SOC, JOC or Compliance Schedule dates: N/A
Page 3

6. Other Special Items: N/A
' A `I'!1nn +r�►tr K'+� T -T T t ^'„' :��'� T .! 1T
d i vy i 1 r,i� - iL / 4 ,... '7 ,4 ... i.% 1-i i �.� Y �.J Lt1.(1 '.J 1 YY:::Jl TA✓ i� i.'i/ v U
Union County public Works Department has applied for an Authorization to Construct
wastewater treatment facilities at the subject site in Union County.
The proposed facilities employ biological phosphorous and nitrogen removal along with
tertiary filtration to provide superior effluent quality if the facilities perform to specifications. The
document entitled Engineering Calculations for 12-Mile Creek Wastewater Treatment Facility
indicates that.there are two possible design scenarios that could be used for the influent screening
structures. The document indicated that cost would determine which structure would be constructed.
Also, the subject document indicated that a second anoxic reaction tank may possibly be constructed.
Nevertheless, even the options for construction that provide the least amount of waste treatment
appear to be adequate.
Union County is currently in great need of expanded wastewater treatment capability.
Therefore, this Office recommends that the subject Authorization to Construct be issued.
! dt61); aL
ort
Signature of a p Preparer
Su
pervisor
Water Qu Regional
2/0‘
Date
Page 4

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FINKBEINER, PETTIS & STROUT, INC.
CONSULTING ENGINEERS
ESTABLISHED 1900
27 CATAWBA STREET, SUITE B
BELMONT, NC 28012
704.825.5450/ 800.252-5450
704-825-4941 FAX
GERALD E. HATTON, P.E.
4 l'1/aiam sue. ` `2g3 X-64 ,
L 1 Ct‘-' (6 t c : (-;15 C� �a� -2� f
(70') -?83 3 r,
FINKBEINER, PETTIS & STROUT, INC.
CONSULTING ENGINEERS
ESTABLISHED 1900
ONE CENTERVIEW DRIVE
GREENSBORO, NORTH CAROLINA 27407
910-292-2271/800.868-7700
910-855-5648 FAX
DAVID A. HAMILTON, P.E.
FPS
FINKBEINER, PETTIS & STROUT, INC.
CONSULTING ENGINEERS
ESTABLISHED 1900
ONE CENTERVIEW DRIVE
GREENSBORO, NORTH CAROUNA 27407
910-292.2271/800-868.7700
910-855.5648 FAX
r�s
HAROLD R. JENSEN, P.E.

G- \ a - 5 yr
November 8, 1995
Mr. Mike Shalati
Director of Public Works
Union County
P.O. Box 987
Monroe, NC 28111-0987
Re: Union County, North Carolina
Comprehensive Water and
Sewer Master Plans Proposal
Dear Mike:
Finkbeiner, Pettis & Strout, Inc. is pleased to submit this
proposal for Union County's Comprehensive Water and Sewer Master
Plans.
Upon authorization to proceed, FPS proposes to provide the
Following Scope of Services for the evaluation of Union County's
Water and Sewer Master Plans for the purpose of planning
improvements for the next 20 years.
Water Master Plan Scope
We propose to conduct the water distribution analysis in the
following five phases:
A. Data Collection
1. Obtain existing water system map with pipe sizes,
ages and types from the County.
2. Obtain all performance curves for the five existing
booster pumping stations and WTP pumps. Obtain all
SCADA records for pump run times, pressures, and
flow rates, as available.
3. Obtain storage tank data, drawings, and level
recorder charts as needed.
4. Obtain information regarding various pressure zone
divisions, regulating valves, etc.
5. Obtain existing WTP master meter and customer water
use meter records for the past two years, and obtain
information from Union County regarding specific
locations of existing large users and amounts they
use.

Mr. Mike Shalati
November 8, 1995
Page 2
6. Prepare an existing water system map using
AUTOCAD/CYBERNET showing water mains and sizes,
pumping stations, storage tanks, water treatment
facilities, pertinent regulating valves, and fire
hydrants.
B. Water Demand Analysis
1. Review existing WTP and water department customer
meter records, paying particular attention to large
users.
2. Determine existing average day, maximum day, peak
hour, and nighttime flows from available records.
3. Determine residential, small commercial, and large
commercial and industrial customer water demands and
locations. Determine seasonal high demand
customers.
4. Project County population through the year 2015.
5. Review existing per capita water usage and project
future water used based on population growth through
year 2015.
6. Determine location of future water demands and water
service facilities with assistance of Union County
staff.
C. Hydraulic Computer Modeling and Calibration
1. Review any "problem areas" identified by the Union
County staff, such as the Austin Road/Sandy Ridge
Road/Plyler Mill Road area near Altan.
2. Review any existing hydrant test data available and
determine appropriate locations for further hydrant
flow tests. Be available to assist in the
performance of hydrant flow tests.
3. Prepare distribution system computer model and
exhibit using CYBERNET Version 2 and AUTOCAD Release
12. This model will utilize information gathered
regarding water main sizes (6 inch diameter and
above, only), lengths and roughnesses, tank
elevations and diameters, topography, pumping
stations, and existing and future water demand data.

Mr. Mike Shalati
November 8, 1995
Page 3
4. Calibrate the model by comparing fire hydrant flow
field data with flow and pressure results obtained
during "instantaneous" simulations.
D. System Improvements and Projects Costs
1. Perform "instantaneous" and "extended period" (24
hour) computer runs to evaluate behavior of water
mains, pumps, and storage tanks, and interaction
between various pressure zones under different
demand conditions, including future demands through
the year 2015.
2. Evaluate appropriateness of existing storage and
pumping operations, storage tank locations, tank
capacities, and tank geometry using "extended
period" simulation output.
3. Recommend distribution system improvements (tanks,
pumps, water mains, etc.) necessary to supply system
needs under high demand and fire flow conditions for
a 20 year period.
4. Provide an opinion of probable construction cost for
recommended storage, pumping, water main, and
valving improvements in 1996 dollars, and any costs
associated with technical services and
contingencies. Prioritize and phase improvements as
appropriate for planning purposes.
5. Develop a water distribution system map showing
proposed improvements.
E. Documentation and Training
1. Prepare a Final Report summarizing all study
findings, recommendations, and opinion of probable
cost for improvements. The Final Report will
include three exhibits as follows:
• Existing Water Distribution System Map
• Water Distribution System Model Schematic
• Proposed Water Distribution System Improvements
The Final Report will also include input data
printouts for an "instantaneous" and an "extended
period" simulation.

Mr. Mike Shalati
November 8, 1995
Page 4
2. The Final Report will be presented to the County
Commissioners after a draft review by the County's
Project Manager. The County will be given 12 copies
of the report once the draft is approved.
3. Keep a digital copy of the CYBERNET computer model
file in our office for a minimum of 10 years and
provide a copy of the file to Union County.
4. Provide two days of initial training to Union County
staff on the use of the CYBERNET model developed for
this project, then follow up with two days of
training approximately 3 months later.
Sewer Master Plan Scope
We propose to conduct the sewer system analysis in the
following five phases:
A. Project Scope Review
1. Review the project scope with the County and other
key parties.
2. Refine the engineering scope of services as
necessary to reflect the County's interests.
3. Meet with DEM to notify them of the study and
request their involvement.
B. Sewer Flow Projections
1. Using 1990 census data and information from
County/municipal planners, investigate and document
current and future demographic data for Union County
as it relates to this project. Cover a 20 year
planning period with emphasis on five year
increments.
2. In conjunction with the County and affected
municipalities, confirm the long term service areas
to be served by public sewer facilities.
3. Review existing water and sewer records for the past
two years from all municipal water and sewer
departments in the County as they pertain to this
study.

Mr. Mike Shalati
November 8, 1995
Page 5
4. Evaluate the potential for high wastewater producing
industrial customers located in the County.
5. Based on population projections and residential,
commercial, and industrial water/sewer demand as
described above, estimate the average and peak day
wastewater flows to be generated for each five year
increment through the year 2015 for the County -wide
drainage basins.
6. Meet with the County Planning Department and
municipal representatives to investigate the
potential effects of planning and zoning on the
study areas with regard to sewer service.
C. Existing Facilities and Needs Assessment
1. Inventory existing public sewer facilities within
established service areas in unincorporated parts of
Union County including treatment plants, interceptor
sewers, force mains and pumping stations.
2. Prepare a base map of existing sewer facilities
within the County and major lines and treatment
facilities within municipalities, excluding the City
of Monroe.
3. Evaluate the potential for interconnecting existing
sewer utilities. Review existing relationships
and/or agreements between the separate utilities as
they relate to potential interconnections. and
explore regionalization of facilities. Address the
political and operational ramifications of shared
resources among separate municipalities and/or
counties.
4. Review Union County's current sewer ordinances and
regulations to ensure future sewer needs can be met
under these rules.
D. Sewer System Alternatives and Costs
1. Investigate and document the options for providing
sewer service to the County including the
development of new treatment plants or transport to
existing treatment facilities, using a software
specified by the Owner such as HYDRAPIPE modeling
and design software. The modeling process will

Mr. Mike Shalati
November 8, 1995
Page 6
include sewer pumping station and force main sizing
capacities.
Existing trunk sewers and collection sewers at least
6" in diameter, and 4" or greater FM's, and pumping
facilities pertinent to the County system will be
analyzed to determine excess capacity. Proposed
systems will be evaluated for appropriate capacity
and location for the 20 year study period.
2. Evaluate treatment facility locations and offer
treatment process options for each facility.
3. Consult with DEM to determine the suitability of
streams within the County for wastewater discharge
permits.
4. Contact DEM to determine anticipated treatment
standards for the receiving steams associated with
various alternatives. Unless the schedule is
extended for the project, formal speculative limits
will not be obtained. Also discuss requirements for
necessary environmental assessments associated with
construction of this project and identify any
obstacles. Actual preparation of the Environmental
Assessment would be an additional service at the
appropriate time, with the fee to be agreed upon by
Union County and FPS.
5. Prepare an opinion of probable cost for the various
alternatives, including construction, easements/land
acquisition, contingencies, technical services, and
administrative costs.
6. Summarize the alternatives for providing sewer
service to the County and recommend the most sound
options based upon feasibility, economics and other
appropriate considerations.
E. Recommendations and Summary Report
1. Meet periodically (as a minimum at 50%, 75%, and
100% completion) throughout the development of the
study with representatives of the County and other
affected parties to review findings and
recommendations and to obtain the viewpoints and
observations of the parties involved.

Mr. Mike Shalati
November 8, 1995
Page 7
2. Give recommendations for prioritized capital
improvements plan necessary to provide sewer service
to the study areas including a schedule for
implementation based upon 5 year increments up to
the year 2015.
3. Prepare a Final Report of recommendations for the
proposed improvements, including maps as appropriate
to show existing, proposed, and alternative
facilities.
4. Submit 12 copies of a written report (once the draft
is approved by the County) summarizing the findings
and recommendations and present to the County Board
of Commissioners.
5. Keep a digital copy of the sewer system computer
model file in our office for a minimum of 10 years
and provide a copy of the file to Union County.
6. Provide two days of training to Union County staff
on the use of the model developed for this project.
Video taping of the training session will be
available.
County Responsibilities
The County shall:
1. Provide drawings, maps, pump records, land use data,
flow data, etc. as available, to FPS without charge.
2. Provide access to County property and other property
as needed for the engineer to perform the study.
3. Be available for progress meetings and other
meetings with the engineer.
4. Allow approximately 30 hours of staff time for each
study for providing input pertinent to the study,
excluding time required for training sessions and
meetings.

Mr. Mike Shalati
November 8, 1995
Page 8
Continuing Services
FPS will be available for follow-up phone training and on -
site training as needed, beyond the two days of formal on -site
training listed above. Follow-up training will be an additional
service for a fee to be agreed upon by the County and FPS.
Computer Hardware and Software
We propose to use CYBERNET water system modeling software to
prepare the water master plan. We propose to jointly select a
suitable sewer system modeling software with the County staff. As
a minimum, we will use HYDRAPIPE sanitary sewer modeling software.
An allowance for computer hardware and software of $25,000 is
recommended. Suggested hardware and software are as follows:
Hardware
• Pentium - 100 MHz PC
• 16 Megabytes RAM
• 1 Gigabyte Hard Drive
• Ink Jet Color Plotter (Electrostatic
preferred)
• 12" x 16" digitizer board (or 44" x 56"
digitizer board which would likely be
available through the County's proposed GIS
system)
• Laser Printer
Software
• AutoCAD Release 13
• CYBERNET Version 2 (next version to be GIS
compatible)
• A suitable sanitary sewer modeling software
(i.e. HYDR.APIPE)
Schedule
Once authorization to proceed is given, Union County can
expect to have a draft report of the Water and Sewer Master Plan
Reports three months after authorization to proceed. The final
reports would be submitted one month later pending the County's
review. Computer hardware/software purchases and staff training
should follow completion of the Master Plans.

PROJECT SCHEDULE
WATER AND SEWER SYSTEM MASTER PLANS
UNION COUNTY, NC
PROJECT STEP DATE
Sewer Modeling Software Selection
Data Collection
Water Demand / Sewer Flow Analyses
Modeling & Calibration
Recommendations & Costs
Summary Report
Draft Report
County Review
Final Report
Training
Misc. Meetings w/County
Initiate Data Collection
Population & Service Growth
Fire Flow Tests
Preliminary Findings Review
Review County Comments
11/27-12/8
12/11-12/22
12/25-1/5
1/8-1/19
1/22-2/2
2/5-2/16
2/19-3/1
3/4-3/22
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