20230094 Ver 1_More Info Received_20230717 (2)

Additional Information
C.4a. Describe the existing conditions on the site and the general land use in the vicinity of the project at
the time of this application.
The proposed project extends from Avents Ferry Road to Poplar Springs Church Road in Lee County,
North Carolina. The proposed project involves construction of a new pump station, directly adjacent to
the existing Sanford Raw Water Pump Station, to support intake capacity upgrades of 30 million gallons
per day (MGD). The existing pump station will be demolished, rebuilt in place, and repurposed for
equipment storage. Additional upgrades include a new raw water intake structure within the Cape Fear
River, an influent line from the intake to the new pump station, and an upgraded raw water line from
the new pump station to the existing Water Filtration Facility (WFF) located on Poplar Springs Church
Road, southwest of the existing pump station site. Installation of the proposed conveyance line will
parallel an existing easement owned and maintained by Enterprise Products, immediately north of the
project site. Upgrades to the existing treatment plant will occur and include the construction of a
permanent access road. The project site is currently surrounded by undeveloped, forested areas to the
north, south, and west. Beyond which, to the north, along Lower River Road, are low density residential
housing developments. An existing pump station is located adjacent to the Cape Fear River, abutting
Avents Ferry Road. The existing intake associated with the current pump station extends approximately
57-feet into the Cape Fear River.
C.4h. Explain the purpose of the proposed project
Replacement of the existing pump station, intake, and conveyance line are necessary to meet the
demands of projected growth in Lee County and the surrounding area. Additionally, the existing intake is
partially buried below the river mud line causing high levels of sediment ingestion. The proposed project
consists of replacement of approximately 1.9 miles of 30-inch raw water conveyance line and
abandonment of the existing conveyance line, and other related appurtenances per applicable
regulations. Additional project components consist of demolishing the existing pump station to rebuild
and repurpose for storage. A new pump station and its associated intake and influent line will be built
adjacent to the existing pump station to support intake capacity upgrades of 30 MGD. Upgrades to the
treatment plant will include a new permanent access road.
C.4i. Describe the overall project in detail, including indirect impacts and the type of equipment to be
use.
The project consists of installation of approximately 1.9 miles of a 30-inch raw water main from the
existing Sanford Water Filtration Facility to the proposed pump station located off Avents Ferry Road,
adjacent to the Cape Fear River. An existing pump station, located off Avents Ferry Road, will be
demolished, rebuilt in place, and repurposed for storage. The intake structure associated with the
existing pump station will be removed and its associated raw water line will be disconnected and sealed.
A new pump station is proposed off Avents Ferry Road, adjacent to the existing pump station to expand
intake capacity. The new pump station will include construction of a retaining wall, a new intake
structure, and a new raw water influent line joining the pump station to the intake structure. The new
intake structure will extend approximately 185-feet into the Cape Fear River. Erosion and sediment
control measures will be installed prior to commencing land -disturbing activities. The proposed project's
limits of disturbance encompass approximately 15 acres in total.

C0RStrUGt!9R phase access te the preject will be previded via an e)(*St!Rg preject ce-Fride.r -asseciated with
itted by others, adjaceRt te Lewer Rover Read, will be --itilized 7
Plurt-rhance te the permaRent stream cressing dUr*Rg censtructien activities will hp returned te existing
the prepesed pump statien, will be used f.A-.r c_-A_1n1StE1r1L1Ct*eR phase access and pest censtruction
s asseceated with an engaing picoject that will be peicmitted, mitigated, and installed by otheFs prieF te
Construction -phase access to the project will be provided via temporary construction entrances. One
temporary construction entrance, off Poplar Springs Church Road, will be installed for construction
phase access and will have no impacts to jurisdictional waters. Following installation of the proposed
pipe at S1, the pump around system will be removed and a temporary stream crossing will be installed
to provide construction access to northeast areas of the project. An additional temporary construction
entrance will be provided via swamp mats at W3, adjacent to the existing pump station off Avents Ferry
Road. Additional details related to proposed construction -phase access is provided in the attached
design drawings. A permanent access road associated with the treatment plant will be installed off
Poplar Springs Church Road. The permanent access road will traverse one jurisdictional stream leading
to permanent impacts at S6 and temporary impacts at S5.
Installation of the transmission line in jurisdictional areas (wetlands and streams) will be achieved using
open -cut techniques. Anti -seep collars will be installed along the transmission line per applicable
regulations within jurisdictional wetlands. Crossing of the stream and wetlands by the raw water main
will not result in the net loss of jurisdictional waters. Crossing of the streams and wetlands by the
proposed pipe will not result in the net loss of jurisdictional waters of the U.S.; however, three wetlands,
including W1, W2, and W4, will undergo conversion impacts from forested/scrub-shrub to non -forested.
Conversion impacts will take place at W1 to ensure proper access for maintenance of the pipe following
construction activities per applicable state regulations. Stream crossings will be performed within 15
degrees of perpendicular.
Three jurisdictional wetland areas will be traversed by the project corridor accounting for 0.595 acre of
temporary impacts. Permanent wetland impacts of 0.91 acre via conversion of forested/scrub-shrub to
non -forested will take place at W1, W2, and W4, and will be mitigated accordingly. Two perennial
streams, the Cape Fear River and an unnamed stream, will also be traversed by the project corridor
accounting for 0.99 acre of temporary impacts and 0.01 acre of permanent impacts. Permanent impacts
within the Cape Fear River include new intake structure. The proposed raw water influent line
connecting the intake to the pump station will result in temporary impacts during construction.
Construction associated with the existing pump station, proposed pump station, and proposed retaining
wall will not result in impacts to jurisdictional waters as all work will take place in upland areas.
Temporary impacts to jurisdictional wetlands will include limits of disturbance during construction
activities as well as open -cut installation of a 30-inch raw water main. Fully biodegradable rolled erosion
control matting may be used for surface stabilization in W3, adjacent to the proposed pump station,
resulting in temporary impacts to no more than 0.05 acre.

All stream work, including pipe installation and installation of the new intake structure, will be done in
the dry and no live concrete shall come in contact with jurisdictional waters. During construction
activities, a temporary coffer dam YAmay be placed upstream and downstream of the area of
disturbance and the stream will be pumped around the dammed area. During construction, any
additional dewatering necessary from potential storm events will be left to the contractor to design and
implement. The contractor will be required to follow all applicable requirements and obtain any
necessary approvals. M.1hile the r--A-# ,r .Jam i pFesent, the hydrelegy a ';r.,.J w0th MIR , oll h^ r y+,,,J
Cape Fear Rffi;.�P­r. All y.fA­rk assA_c_-i_;#P_H_ ;Afith the FipFap autfall pad will take plaee at the top ef thp s#rQ;;M
-hank -and vvill net impaet juFisdietienal If deemed feasible by the contractor, installation of the
new intake and its associated waterline, as well as demolition of the existing intake, will be completed
via trained divers. Utilization of divers to perform in stream construction efforts reduces the necessary
footprint of the cofferdam during construction. A turbidity curtain will be used in place of a coffer dam,
not to exceed the limits provided for the coffer dam on the attached design plans. If divers are used, any
concrete associated with the proposed intake will be constructed from upland areas and allowed to dry
prior to installation in the Cape Fear.
One permanent culvert will be installed at S6 to allow a permanent access road to the west side of the
treatment plant following construction activities. Existing streambed material will be utilized to bury the
new culvert. The stream will be brought back to the original grade following installation of the new
culvert. The culvert will have a protective concrete inlet and outlet pad. An additional riprap outlet pad
will be installed to provide dispersal of flow. Two diversion swales will be installed to manage onsite
drainage during construction activities. Each diversion swale will include a riprap outlet pad to provide
disbursement of flow prior to entering the jurisdictional waters. The riprap outlet pads will span to top
of bank; therefore, no fill will take place in jurisdictional waters in association with the diversion swales.
Details related to culvert installation can be found on page CD1 of the attached design drawings. A
temporary stream crossing will be utilized at S1 and S4. The temporary stream crossings will not have
impacts on jurisdictional waters as it will expand from top of bank to top of bank. For additional details
related to the temporary stream crossings, please refer to the sheet PPD6 of the attached design
drawings.
Equipment anticipated to be used during installation of the proposed transmission line includes, but is
not limited to, excavators, backhoes, front-end loaders, dump trucks, and cranes. Details of proposed
activities, such as temporary stream bypass structures and anti -seep collars, are provided on the design
drawings submitted in conjunction with this permit application.
Indirect impacts associated with installation of the influent conveyance and intake structure are
anticipated to be negligible since construction of the proposed project will not induce growth but is
required to meet current and future demands of the service area.
D. 2i. Wetland Impacts Comments
.._

During onsite delineation efforts, W1 was identified as palustrine forested. W1, as depicted on the
attached Delineation Impact Map 2, will be permanently converted from a forested to non -forested
wetland to ensure proper maintenance of the pipe corridor following construction. Additional
conversion impacts from scrub -shrub to herbaceous will take place at W2 and W4. At current, Wand
W3 is a palustrine emergent wetland; therefore, no conversion impacts are necessary. The permanent
maintenance corridor throughout the proposed project site is 45-feet; however, 40-feet is proposed in
all wetland areas to minimize impacts to the extent feasible.
E.1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the
project.
Delineation of jurisdictional areas and identification of sensitive receptors occurred early in the design
process. During design, the project corridor was positioned to avoid regulated areas and sensitive
receptors, where feasible, while using existing corridors and easements to the extent practicable. goring
the design PFOcess, ceerdinat.en y.fit-h. Nreese _R, Nichols took place to avoid permanent cenversien
Hurt, e-. Although the permit status of Project Blue is unknown, coordination took place with
Freese & Nichols to ensure mitigation of onsite wetlands were not duplicative for the City of Sanford.
Mitigative measures relative to a permanent maintenance corridor associated with W1 will be
purchased prior to construction commencement by either Hazen and Freese and Nichols. Avoidance of
all impacts is possible only with a no -build alternative, which does not meet the need of the project.
Where avoidance of jurisdictional wetlands was not possible, the limits of disturbance were reduced to
the extent practicable. Installation of the new raw water intake and removal of the existing raw water
intake cannot be completed without in -water work.
Project design includes anti -seep collars along the pipe within and adjacent to jurisdictional wetland
areas, per applicable requirements. Avoidance of the streams within the project corridor is not feasible.
Stream crossings were designed to minimize the limits of disturbance with crossings within 15 degrees
of perpendicular, where feasible. A temporary stream crossing will be utilized at S1 and S4. The
temporary stream crossing will not have impacts to jurisdictional waters as the dragline bridgemat will
expand from top of bank to top of bank. A permanent stream crossing will be utilized at S6 and will
involve 149 feet of permanent impact to the stream. Swamp mats will be used to cross jurisdictional
wetlands to minimize impacts from vehicular crossings.
E.1b. Specifically describe measures taken to avoid or minimize the proposed impacts through
construction techniques.
Best management practices for erosion and sediment control measures are specified in the project
design. Measures include perimeter silt fence, minimization of tree removal, and stabilized construction
entrances. The contractor shall perform weekly inspections of erosion and sediment control devices and
perform maintenance as needed to ensure maximum efficacy of all devices in use. Vehicle and
equipment maintenance activities are required to be performed outside of jurisdictional areas.
Disturbed soils will be temporarily stabilized if the disturbed area will not be final graded and

permanently stabilized within a reasonable timeframe. Impacts to jurisdictional areas during
construction will be limited to the extent feasible by performing as much work as is possible from
upland areas. Disturbed areas, including temporary wetland and stream impacts, will be returned to
original grade and seeded with an appropriate native seed mix as soon as possible, not to exceed 90
days of completion of the project. In wetlands, the contractor shall remove and stockpile the top 12" of
material. The stockpiled material shall be used to backfill the top 12" of the trench in wetlands during
backfill operations. Trenches will be constructed and backfilled per applicable regulations to ensure
waters of the U.S. are not subject to drainage during construction activities. Please refer to sheet C001
of the attached design plans for additional details relative to the restoration of temporarily disturbed
wetland areas following construction. Swamp matting will be used where appropriate in wetland areas.
Excavation of the pipe trench will be performed as prescribed by the USACE in jurisdictional areas, and
side casting of excavated material into abutting wetland areas will be avoided to the extent feasible.
Assessment of alternative methods versus using open -cut installation was performed. Most of the areas
of disturbance within jurisdictional features are either very small or are in areas that are already
disturbed, such as abutting existing maintained transmission corridors. Due to the small size of the areas
of disturbance and the existing disturbed condition within jurisdictional areas, use of trenchless
installation techniques will not be used to traverse jurisdictional wetland areas or the perennial stream
abutting Lower River Road. Installation techniques associated with the new raw water intake line in the
Cape Fear River will be at the contractor's discretion. Directional drilling will be utilized where feasible to
limit disturbance and will adhere to applicable regulations; however, the contractor may use open -cut
techniques as deemed fit. In the event that directional drilling takes place, the contractor will be
provided a frac-out detail which can be found in the attached design drawings for reference.
G.3b. If you answered "no", provide a short narrative description.
Development within the Sanford WFF service area is anticipated to occur. The proposed project will not
promote growth but will support the development that will occur regardless of the project and will
provide state of the art municipal treatment of drinking water. Existing ordinances and regulations,
including the Clean Water Act, erosion and sediment control regulations, and stormwater ordinances,
are expected to prevent impacts to downstream water quality due to future development in the pump
station's service area.
G.Sj. Endangered species within project area.
Hazen biologists reviewed the FWS online IPaC tool to determine species and/or critical habitat within
the vicinity of the proposed project on October 3, 2022 and December 14, 2022. The proposed project is
not located within range of critical habitat for any federally listed species. Onsite field investigations
were conducted by Hazen staff in October 2022 and no evidence of federally listed species was
observed. Additional field surveys were conducted on December 12, 2022 to investigate for presence
and/or absence of the red cockaded woodpecker (Picoides borealis). No evidence of red cockaded
woodpeckers or their preferred habitat, in the form of mature pines, were observed within the project's
vicinity. Additionally, no cavities exuding sap were observed within the proposed project limits.
G.7a. What data sources did you use to determine whether your site would impact historic or
archeological resources?

Hazen biologists reviewed HPOWEB on December 19, 2022 to determine potential impacts to historical
or archeological resources. No historic districts have been documented in the National Register within
the project's vicinity. At present, Memphis Methodist Church and Cemetery (Site ID LE0242) is shown on
the National Register study list. No determinations have been made regarding the site. Memphis
Methodist Church and Cemetery is located approximately 396-feet east of the proposed project site.
The Methodist Church and Cemetery site will not be utilized for any construction activities related to the
proposed project. At current, the 396-feet between the proposed project site and Memphis Methodist
Church and Cemetery is undeveloped, providing a forested area as a buffer. At present, no additional
structures are documented within, surrounding, or visible from the proposed project site.
G.Bb. If yes, explain how project meets FEMA requirements.
The proposed project is within a FEMA-designated 100-year floodplain according to North Carolina's
FEMA GIS data reviewed by Hazen. An additional flood study within the proposed project's limits of
disturbance will be necessary to determine if the project will result in a rise. The documentation
required (i.e. County Floodplain Permit, conditional letter of map revisions, etc.) to build within a FEMA-
designated 100-year floodplain will be acquired prior to construction.