WQ0038968_Application (FTSE)_20210419

Permit Number WQ0038968
Program Category
Non -discharge
Permit Type
Gravity Sewer Extension, Pump Stations, & Pressure Sewer Extensions
Primary Reviewer
dean.hunkele
Coastal SWRule
Permitted Flow
12,480
Facility
Facility Name
Jensens Coastal Plantation Sewer
Location Address
Owner
Owner Name
Pluris Hampstead LLC
Dates/Events
Scheduled
Orig Issue App Received Draft Initiated Issuance
2/1/2017 2/2/2021

State of North Carolina
DWR c Department of Environmental Quality
Division of Water Resources
15A NCAC 02T.0300 — FAST TRACK SEWER SYSTEM EXTENSION APPLICATION
Division of Water Resources FTA 04-16 & SUPPORTING DOCUMENTATION
Application Number: WQ003 ffpp (to be completed by- MR)
.All items must be completed or the application will be returned
1. APPLICANT INFORMATION:
1. .Applicant's name: Pluris Hampstead. LLC (company, municipality, HOA, utility, etc.)
2. Applicant type: ❑ Individual ® Corporation ❑ General Partnership ❑ Privately -Owned Public Utility
❑ Federal ❑ Statelcounty ❑ Municipal ❑ Other
3. Signature authority's name: Randy Hoffer per 15A NCAC 02T .0106(b)
Title: NC Regional Manayeer
4. Applicant's mailing address: 1095 State Highway 210
City: Sneads Ferry
State: NC Zip: 28460-,
5. Applicant's contact information:
Phone number: (9t0) 327-0774 Email Address: rhofferrd!phtrisusa.com
11. PROJECT INFORMATION:
I. Project name: Jensen's Coastal Plantation - Loblolly Trail Pump Station Upgrades
2. Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project
If a modification. provide the existing permit number: W000 and issued date:
If new construction but part of a master plan, provide the existing permit number: W000373 287
3. County where project is located: Pender
4. Approximate Coordinates (Decimal Degrees): Latitude: 34.3722 Longitude:-77.6961
5. Parcel ID (if applicable): 3292-39-3667-0000
(or Parcel ID to closest downstream sewer)
Ill. CONSULTANT INFORMATION:
1. Professional Engineer: Kristen MorrisLicense Number: 047051
Finn: WK Dickson
Mailing address: 300 N. Third Street. Suite 301
City: Wilmington State: NC Zip: 28401-4732
Phone number: [phone] Email Address: KMorrisLa WKDICKSON.CON1
IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION:
1. Facility Name: Pluris Hampstead W WTP Permit Number: W00037287
Owner Name: Pluris Hampstead LLC
V. RECEIVING DOWNSTREAM SEWER INFORMATION (if different than %VW'TF):
I. Permit Number(s): W 00037324 Downstream (Receiving) Sewer Size: 10 inch
System Wide Collection System Permit Number(s) (if applicable): WQCS37324
Owner Name(s): Pluris Hampstead LLC
DPP
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FORM: FTA 04-16 Page I of 5

\'I. GENERAL REQUIREMLN I'S
I. If the Applicant is a Privately -Owned Public Ltility, has a Certificate of Public Convenience and Necessity been attached'?
® Yes ❑No FIN r \
_. If the .Applicant is a Developer of lots to be sold. hits a Dc%eloper 's Operational Agreement IFOWV DP� been attached?
❑ Yes [_]No ®N/A
.. If the Applicant is a Homer Proocrty Ow trios' -Association has an Operational .A¢rcerncnt I PORM: HOA) been attached'?
❑ Yes ❑No ®Ni.A
4. Origin of wastewater: (check all that apply ):
❑ Residential Owned ❑ Retail (stores, centers, malls) ❑ Car Nk ash
❑ Residential Leased ❑ Retail with food preparation, service ❑ Hotel and or Motels
❑ School i preschool day care ❑ Medical i dental / veterinary facilities ❑ Swimming Pool !Clubhouse
❑ Food and drink facilities ❑ Church ❑ Swimming Pool; Filter Backwash
❑ Businesses offices factories ❑ Nursins Home ❑ Other (Explain in Attachment)
5. Nature of wastewater: 92.1 'o Domestic: Commercial 7.9 °'o Commercial
uo Industrial (See ISA NCAC011 .0103(20))
L-----)-Is there a Pretreatment Program in effect? ❑ Yes ❑ No
G, Has a flow reduction been approved under 15A WC C 02T .01 14(0? ® Yes ❑ No
If ves, provide a cop% of Flow reduction approval letter
7. Summarize wastewater generated by project:
Establishment Type (see 02T.01141f))
Daily Design Flow',b
�No. of Units
Flow
Single Family Residences
120 galidny
16�60 GPD
Pool
10 —,at Pelson
2000 GPD
Fitness Center
50 gal 1100 sf
22% GPD
gal/
GPD
gal"
GPD
gal
GPD
Rrtal
20,810 GPD
I See I �A NCAC 0'_T .01 14f b) (d). (c)(I 1 and (e)121 for caveats to wastewater design flow rates (i.e., minimum flow per
dwelling: proposed unknown non-residential development uses: public access facilities located near high public use areas:
and residential property located south or eastot the Atlantic Intracoastal Watemay to be used as vacation rentals as defined
in GS 42;1 4).
b Per 15 A ACAC 02T .0114(e), design flow rates for establishments not identified [in table I � A NCAC 02 LOI 14] shall be
determined Using available flow data, water using fixtures. occupancy or operation patterns, and other measured data.
S. Wastewater generated by project. N A GPD (per I5A N('AC 02T .01 14)
Do not include future flows or previously permitted allocations
If permitted flow is zero, indicate wh}:
❑ Puntp Station or Gravity Sewer where flow w ill be pennittcd in subsequent permits that connect to this line
® Plow his already been allocated in Permit Number: "Q 0040752
❑ Rehabilitation or replacement of existing sewer with no new flow expected
❑ Other (Explain):
FORM: I I A 04-10 Pace 2 of

VIL GRAM FY SEWER DESIGN CRITERIA (If .Applicable) - 02'f ,030� & NI DC (Gravity Sewers):
I. Summarize gravity sewer to be permitted:
Size (inches) Length (feet) Aaterial
Section II &III of the %IDC for Permittim_> of Gravity Sewers contains information related to design criteria
Section III contains information related to minimum slopes for gravity sewer(s)
Oversizing lines to meet minimum slope requirement is not allowed and a violation of the MD(
NIII. Pump STATIONDESIGN CRITERIA (if Applicable) —02T.030,5&)IDCfPumpStationslForceiMains):
COMPLETE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT
I. Pump station number or name: Loblolly Trail Station
2. Approximate Coordinates (Decimal Degrees): Latitude: 34.3722 Longitude:-77.6961
_. Design flow of the pump station: 0.00696 millions gallons per day (firm capacity)
4. Operational point(s) of the pump(s): 114 gallons per minute at 33 feet total dynamic head (TDH )
S. Summarize the force main to be permitted (for this Pump Station):
Size (inches) Length (feet) Material
6. Power reliability in accordance with 1 S_A ACAC 021 .0305(h)1 I ):
® Standby power source or pump with automatic activation and telemetrN - I SA VCAC 021 .030S(h)( I )(D)_
Required for all pump stations with an ayeraue daily flow greater than or equal to 15.000 gallons per day
Must be pennanent to facility
Or ifthe pump station has an average daily flow less than I5.000 gallons per day:
❑ Portable power Source with manual activation, quick -connection receptacle and telemetn - I SA VCAC 021
.0305(h)( I )IC)
or
❑ Portable pumping unit with plugged emergency pump connection and tclemeny - I SA V('A( 021 .030s(h)(1 )(C):
It shall be demonstrated to the Division that the portable source is owned or contracted by the applicant (draft agreement)
and is compatible with the station.
I fthe portable power source or pump is dedicated to multiple pump stations. an evaluation of all the pump stations' storage
capacities and the rotation schedule of the portable poker source or pump. including trawl timeframes. shall he provided
in the case of a multiple station pov%er outage.
FORM: FT;A 04-16 Paee 3 of S

IV SETBACKS & SEPARATIONS —(02B.0200&16a.ACACO2T.0305(t)):
Does the project comply with all separations found in 15;A W AC 02T .0305(t) K (co ® Yes ❑ So
15.A NCAC 02 1.0305(f) contains minimum separations that shall be provided for sewer systems:
Setback Patanteter*
Separation Required
Storm sewers and other utilities not listed below vertical)
24 inches
water mains (vertical -water over sewer including in benched trenches)
18 inches
Abater mains (horizontal)
10 feet
Reclaimed water lines (vertical - reclaimed over sewer)
IS inches
Reclaimed water lines (horizontal - reclaimed over sewer)
2 feet
"*Any private or public water supply source, incluc in. any wells. w'S-1 waters of Class I or
Class II impounded reservoirs used as a source of drinking water
100 feet
**Waters classified AVS (except Ak S-1 or WS-A ). B. SA, ORw, I IQW, or SB front normal
high water (or tide elevation) and wetlands see item IX.2)
50 feet
**Any other stream, lake, impoundment, or ground water lowering and surface drainage
ditches
10 feet
Anv building foundation
5 feet
Anv basement
10 Feet
Top slope of embankment or cuts of 2 feet or more vertical height
10 feet
Drainage systems and interceptor drains
5 feet
Anv swimming tools
10 feet
Final earth grade (vertical)
36 inches
15A NCAC 02T.0 305(g) contains alternatives where separations in 02T.0305(f) cannot be achieved.
"Stream classification's can be identified using the Divisions VC Surface AFater Classifications webpaae
If noncompliance with 02T.0305(t) or (gJ_ see Section X of this application
2. Does the project comply with separation requirements for wetlands? (50 feet of separation) ® Yes ❑ \o
ft ❑ NiA
I See the Division's draseparation requirements for situations where separation cannot be meet
No variance is required if the alternative design criteria specified is utilized in design and construction
As built documents should reference the location of areas effected
3. Does the project comply with setbacks found in the river basin rules per I5A NCAC 02B .02000 ® Yes ❑ No ❑ V. A
This would include Trout Buffered Streams per 15A ACAC 213.0202
4. Does the project require coverage -authorization under a 404 Nationwide or ❑ Yes ® Ao
individual permits or 401 water Qualiq- Certifications'.
Information can be obtained from the 401 x Buffer Permitting Branch
5. Does project comply with I s \ WAC Oft O105(c)(6) (additional permitscc] tifications)'. ® Yes ❑ No
Per 15A \('AC 021 .0105(c)I6)- directly rclated environmental permits or certification applications are being prepared, have
been applied for. or have been obtained. Issuance of this permit is contingent on issuance of dependent permits (erosion and
sedimentation control plans, storntwater management plans. etc.).
6. Does this project include any scwer collection lines that are deemed high -priori[; ?"
Per I s V VC.AC 021.0401 "high-pr totm sewer" means "any aerial sewer, scwer contacting surface waters. siphon. or setmer
positioned parallel to streambanks that is subject to erosion that undermines or deteriorates the sewer.
❑'t es ® No ❑ \'A
If des, include an attachment with details for each line. including type (aerial line size. material, and location).
High priority linesshall be inspected b)'the permittee or its representative at least once every six -months and inspections
documented per I n:A NCAC 021-.O403(a)(5) or the permitee's individual Systeru-NN ide Collection permit.
FORM: FTA 04-16 Page 4 of 5

X. CERTIFICATIONS:
1. Does the submitted system comply with 15A NCAC 02T, the Minimum Design Criteria for the Permitting of Puma Stations
and Force Mains (latest version), and the Gravity Sewer Minimum Design Criteria (latest version) as applicable?
® Yes ❑ No
IfNo, complete and submit the Variance/Altemative Design Request application (VADC 10.14) and supporting documents for
review. Approval of the request is required prior to submittal of the Fast Track Aoplteatimt and supporting documents.
2. Professional Engineer's Certification:
1, attest that this application for
(Professional Engineer's name from Application Item III. I.)
has been reviewed by me and is accurate, complete and consistent with the information supplied in the plans, specifications,
engineering calculations, and all other supporting documentation to the best of my knowledge. I further attest that to the best
of my knowledge the proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer
Minimum Design Criteria for Gravity Sewers (latest version), and the Minimum Design Criteria for the Fast -Track Permitting
of Pump Stations and Force Mains (latest version). Although other professionals may have developed certain portions of this
submittal package, inclusion of these materials under my signature and seal signifies that I have reviewed this material and
have judged it to be consistent with the proposed design.
NOTE — In accordance with General Statutes 143-215.6A and 143-215.613, any person who knowingly makes any false
statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may
include a fine not to exceed $10,000, as well as civil penalties up to $25,000 per violation.
North Carolina Professional Engineer's seal, signature, and date:
3. Applicant's Certification per 15A NCAC 02T .0106(b):
J•PZB CARD O�
,� 2 f4o(fSSipy"9
fa f
i gVL
t 04705t
I, � attest that this application for
(Sig ature Authority's name & [tle firm App ication tem 1 3.)
has been reviewed by me and is accurate and complete to the best of my knowledge. I understand that if all required parts of
this application are not completed and that if all required supporting documentation and attachments are not included, this
application package is subject to being returned as incomplete. 1 understand that any discharge of wastewater from this non -
discharge system to surface waters or the land will result in an immediate enforcement action that may include civil penalties,
injunctive relief, and/or criminal prosecution. I will make no claim against the Division of Water Resources should a condition
of this permit be violated. I also understand that if all required parts of this application package are not completed and that if
all required supporting information and attachments are not included, this application package will be returned to me as
incomplete.
NOTE -- In accordance with General Statutes 143-215.6A and 143-215.6I3, any person who knowingly makes any false
statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may
include a fine not to exceed $10,000 as well as civil penalties up to $25,000 per violation.
Signature: Date:
FORM: FTA 04-16 Page 5 of 5

Uivislon of Wah•r Re"oul, -.
State of North Carolina
Department of Environmental Quality
Division of Water Resources
Flow Tracking for Sewer Extension Applications
(FTSE 10-18)
Entity Requesting Allocation: Pluris Hampstead LLC
Project Name for which flow is being requested: Jensen Loblolly Station Upgrade
More than one FTSE rnap be required for a single project if the owner of the WWTP is not responsible for all punnp
stations along the route of the proposed wasteivater flow.
L Complete this section only if you are the owner of the wastewater treatment plant.
a. WWTP Facility Name: Pluris, Hampstead
b. WWTP Facility Permit #: WQ0037287
All flows are in MGD
c. WWTP facility's permitted flow 0.250
d. Estimated obligated flow not yet tributary to the WWTP
e. WWTP facility's actual avg. flow
f. Total flow for this specific request
g. Total actual and obligated flows to the facility
h. Percent of permitted flow used
0.015
0.123
0.026150
0.164150
65%
II. Complete this section for each pump station you are responsible for along the route of this proposed
wastewater flow.
List pump stations located between the project connection point and the WWTP:
Pump
Pump
Station
Station
Firm
(Name or
Permit
Capacity,
Number)
No.
MGD
Regional
WQ0037863
1.700
(A)
(B)
(C)
(D)=(B+C)
(E)=(A-D)
Design
Average
Approx.
Obligated,
Total
Daily
Current
Not Yet
Current Flow
Flow**
Avg, Daily
Tributary
Plus
(Firm / pf),
Flow,
Daily Flow,
Obligated
Available
MGD
MGD
MGD
Flow
Capacity***
0.680
0.100
0.020
0.120
0.560
Parkwood WQ0038968 0.145 0,0580 0.009 0.026150 0.03510 0.0230
* The Firm Capacity (design flow) of any pump station is defined as the maximum pumped now
that can be achieved with the largest pump taken out of service.
** Design Average Daily Flow is the firm capacity of the pump station divided by a peaking factor
(pf) not less than 2.5, per Section 2.02(A)(4)(c) of the Minimum Design Criteria.
*** A Planning Assessment Addendum shall be attached for each pump station located
between the project connection point and the WWTP where the Available Capacity is < 0.
Downstream Facility Name (Sewer): Pluris Hampstead LLC
Downstream Permit Number: WQCS0037324
Page 1 of 6
FTSE 10-18

III. Certification Statement:
I Randy Hoffer, Regional Manager certify to the best of my knowledge that the addition of
the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving
wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity
related sanitary sewer overflows or overburden any downstream pump station en route to the receiving
treatment plant under normal circumstances, given the implementation of the planned improvements
identified in the planning assessment where applicable. This analysis has been performed in accordance
with local established policies and procedures using the best available data. This certification applies to
those items listed above in Sections I and II plus all attached planning assessment addendums for which I
am the responsible party. Signature of this form certifies that the receiving collection system or treatment
works has adequate capacity to transport and treat the proposed new wastewater.
Signing Official
Title ofSigninfOfeial
Page 2 of 6
FTSE 10-IS

MEMORANDUM DDICKSONI
community Infrastructure consultants
300 N. Third Street, Suite 301 Wilmington, North Carolina 28401 910.762.4200 let.
TO:
Joe Esposito, Vice President.
Jensen's Incorporated
........
FROM:
T. Carter Hubard, P.E.
.•; ..........
Jonathan C. Holmes P.E.
4;°-
W.K. Dickson & Co., Inc. SEAL
024 8, t
DATE:
February 28, 2020
"� �•., �
RE:
Coastal Plantation Phase 4, Parkwood Station
Background:
The owner of the Coastal Plantation Phase 4 Development, Jensen's, Inc., has contracted
W.K. Dickson to evaluate the Parkwood Sewer Pump Station to determine if the station
has available capacity to receive flow from the build out of Phase 4. The existing duplex
station is equipped with (2) Sulzer Piranha PE45 2/1) grinder pump. A draw down test
was performed on February 14, 2020 by Pluris Holdings, LLC. The draw down test
yielded a flow of 62.7 gpm discharging from the station pumping against a system
pressure of 26 psi measured at an ARV located on the force main along US 17. Both
existing pumps were tested and yielded similar results.
The proposed conditions with the Loblolly Pump Station discharging to the Parkwood
Station were evaluated and found to be 95 gpm with a Total Dynamic Head (TDH) of 107
ft. The Parkwood Station pumps to a 4" force main with a connection to a 10"
force main on US 17. The US 17 force main discharges to the newly constructed Pluris
regional station located along US 17 in Hampstead, NC. The following information was
used in this analysis:
• Pete Duty & Associates, Inc., Jensen Lift Station — Pluris Hampstead, Start Up
Report dated February 10, 2017
• Michael C. Gallant, PE, PA, Pluris Hampstead, LLC, Record Drawings dated July
13, 2015, pages C1.15-C1.19
• Michael C. Gallant, PE, PA, Pluris Hampstead, LLC Jensens Coastal Plantation
Wastewater Collection System Expansion, Record Drawings dated January, 15,
2017, pages Cl-05
• Pluris Holdings, LLC. email dated February 14, 2020.
Results:
Based on this analysis, the existing Parkwood pump cannot meet the future capacity
needed. W.K. Dickson recommends a larger more powerful pump that can deliver 95
gpm in an operating range that coincides with the attached system curve.

Paw
IICKSON
community infrastructure consultants
April 9, 2021
Mr. Dean I hmkele
NCDEQ—Water Quality Section
127 Cardinal Drive Fxtension
Wilmington, NC 28403
RE: Fast Track Sewer System Extension Application (FTA 04-16) Response to Review Comments
Coastal Estates — Loblolly Trail Pump Station Improvements
Town of Hampstead, North Carolina
WKD Project Number 20170198.00.IVL
To Whom It Mav Concern:
On behalf of Pluris Hampstead LLC, we are pleased to submit for your review responses to comments
received via email on February 23, 2021.
1) In reviewing the project narrative, the proposed replacement station is designed at 68-gpm to
serve 66 existing lots plus 71 lots & pool complex trom the Phase 4 pump station, but then states
the subject station receives flow from 195 lots plus a pool complex. Thus, the math is not quite
adding up.
Response: The replacement Loblolly Station handles flow from an existing 66lots, plus 71
new tots from Phase 4 that drain via gravity into the Loblolly Station, plus the flow received
from Pump Station =1, on Fruitwood Drive (WQQ0040752), that contributes an additional 58
lots, for a total of 195 lots plus the future clubhouse and pool. The narrative has also been
revised to more clearly explain the existing and proposed service areas.
2) Please clarify the number of lots serving each station.
Response: The narrative has been revised to clarify the existing and proposed conditions.
3) Clarify how the existing Parkwood Station (30-gpm station) can receive the additional flow from
the Loblolly station without having an issue given it has little to no gravity sewer to buffer the
incoming tlow from the subject station'
Response: The existing Parkwood station currently operates at approximately 62.7 GPM.
Please see the attached memo from WKD recommending improvements to the Parkwood
Station by WKD to Pluris. A permit package for this pump station upgrade was submitted
separably by Michael Gallant on April 1, 2021.
4) Please provide a FTSF showing all the pump stations downstream of the subject pump station
receiving its flow.

April 9, 2021
Page '_
Response: An updated FTSE has been provided that includes the pump stations between the
subject pump station and the SVIVTP.
5) Please provide a copy of the existing sewer system map for the development with all its pump
stations wj1Ds and their force main plans plus the Phase 4 and its pump station and force main.
Response: Please see revised Sheet 02 as well as a Cover Sheet provided by Pluris that was
used for construction of the force main
6) Any pump station designed to receive 15,000 GPI)must have a dedicated on -site automatically
activated backup generator or pump. Thus, a portable pumping not is not an option as was
selected on the application.
Response: A permanent bypass pump has been selected and added to the plans.
Attached with this submittal are:
1. Two copies of the revised ETA Application.
2. FNvo copies of the revised F'ISE Application.
3. Copy of recommended letter of improvements for Parkwood Station.
4. One copy of the revised site plans and details.
5. One copv of the Force Main design Cover Sheet, provided by Pluris
0. One copy of the revised narrative and sanitary sewer calculations.
If you have anv questions, please contact me at (910) 7162-4200 or kmorriso;+ckdickson.com.
Ihank you for your attention to this matter.
Sincerely,
IV, K. Dickson & Co., Inc.
Kristen L. )(orris, P.F.
Project )tanager
ID IICKSON

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Sanitary Sewer Pump Station Upgrade Design Report
Permit Submittal Package
for
Coastal Estates
Hampstead, North Carolina
Prepared for:
Sun Communities, Inc.
2777 Franklin Road, Suite 200
Southfield, MI48034
W KD �: 20170198.00. W L
Prepared by:
hWK C
�.� N CARP
DICKSON
community infrastructure consultants _ �iV `•vV�C.I _
WK Dickson & Co., Inc.
300 N. Third Street, Suite 301=°'.FMeiN�E��
Wilmington, North Carolina 28401 FN .L
Prepared: Kristen L. Morris, PE
March 2021 FOR AGENCY REVIEW ONLY

�D CKSON
Background............................................................................................................................................ I
ProjectDescription................................................................................................................................ I
Appendices:
Appendi.c A: Pump Station Calculation:
Loblolly Station Existing Calculations
Loblolly Station Proposed Conditions
Appendix B: Sitc h9aps
USGS Topo Map
Aerial Map
Appendix C: Electrical Specifications

Pkw
IICKSON
community Infrastructure consultants .April 9.2021
Coastal Estates Pump Station Upgrades
Hampstead, North Carolina
Project Narrative
BACKGROUND
Coastal Estates subdivision project is a well -established and well -maintained high -quality
manufactured housing community designed for citizens 55 years of age and older. Coastal
Estates started in 1982 and underwent expansions in 1993, 2005, and 2010 Milt the most recent
expansion (Phase 4— 138 lots) under construction in 2019. In the final built out stage, there arc a
total of 246 lots on the 65.05-acre parcel (PIN 3292-39-3661-0000). The subdivision k in
Hampstead, NC (Lat: 34`22'41 "N, Long.: 77'41'48" W).
The purpose of this project is to analyze the effects of the additional flow from the lots built with
the Phase 4 construction on the existing two pump stations that serve the community.
This project proposes upgrades to the Loblolly Pump Station and an analysis of the Parkwood
Station (WQ), using a full build out scenario of the subdivision on both stations.
PROJECT DESCRIPTION
There are 3 pump stations that serve the Coastal Plantation community: WQ0040752 on
Fruitwood Drive (Phase 4 pump station), an unpermitted prunp station on Loblolly Trail, and
W00038698 on Parkwood Trail. The Parkwood Trail Station is the last in the series that serves the
neighborhood and drains via force main out into a gravity line on US Highway 17.
Residences in the project area contribute a design flow rate of 120 gpd per unit after an approved
60 gpd per bedroom flow reduction by NCDEQ in 2017. There are 2 amenity centers in the
comnnrnity, one existing and one proposed, both with clubhouses that contribute or will
contribute 50 gallons per 100 square foot of the facility and swimming pools have an estimated
50 daily users contributing 10 gpd. The Coastal Plantation waver system eventually discharges to
the Pluris-Hampstead Wastewater Treatment Plant which has confirmed there is available
capacity to accommodate treatment of this development.
Pump Station Number 1 - W00040752 - Fruitwood Drive
This prunp station was designed with the most recent phase (Phase 4) of the subdivision and is
excluded from this anahsis and upgrade project. Below is a breakdown of the flow handled by
the station:
Proposed lots draining directly to station: 58 single family residential homes
Total GPD: 6,960

WDIICKSON
community infrastructure consultants
April 9. 1021
This pump station is located at the end of Frnitwood Drive and discharges to an existing sewer
manhole at the intersection of Bear Creek Drive and Nandina Drive through a 4" PVC force
main. This gravity sewer drains to the Pump Station Number 2 at Loblolly Trail.
This station will be built with the remaining lots in the subdivision.
Pump Station Number 2 - Loblolly Trail
The Loblolly Station is located near the intersection of Loblolly Trail and Cypress Circle. Below
is a breakdown of the flow handled by the station:
Existing Lots draining directly to Station: 66 single family residential homes
Additional proposed lots coming directly from Phase 4 development: 71 single family residential
lots
Contribution from the Fruitwood Station: 58 single family residential lots
Total lots contributing to Station: 195 single family lots plus future clubhouse and pool
Total GPD: 20,150
This pump station was completely re -designed and re -constructed to property handle the flow
contributed by the addition of lots in Phase 4 development The influent or effluent gravity/force
main lines will not be modified as part of this project. This station discharges to a sanitary see,er
manhole adjacent to Pump Station Number 3, Parkwood Station through a 4" PVC force main.
The station will be upgraded to HOMA AV334-200/5,5T/C pumps doith an operating point of 114
GPM at 33 feet of TDH.
Pump Station Number 3 — W00038698 - Parkwood Trail
Parkwood Station (W00038698) %%,as recently upgraded in 2017 near the intersection of Parkwood
Trail and Cone Bark Lane. Below is a breakdown of the flow handled by the station:
Lots draining directly to Station: 42 single family residential homes plus existing clubhouse and
pool
Additional Lots coming directly from Phase 4 development: 9 single family residential Tots
Flow coming from Loblolly Station:
Total lots contributing to Station: 246 single family lots plus existing clubhouse and pool plus
future clubhouse and pool
Total GPD: 35,020

phW
IICKSON
community Infrastructure consultants
April 9. 2021
This station was analyzed for its capacity, but replacement of the pumps is the responsibility of
Pturis Holdings, LLC. A memo of recommendations was provided to Pluris for their
consideration, and a design permit package for Parkwood Station was submitted be others.
Please Refer to calculations in Appendix A for existing and proposed condition reports for the
Lobloll' Station and the attached Memo for the recommendations being made for the
Parkwood Station.