NC0023736_Environmental Assessment_19980227

NPDES DOCIMENT SCANNING COVER SHEET
NPDES Permit:
NC0023736
Gunpowder Creek WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
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Document Date:
February 27, 1998
'I'hita document its printed on reuse paper - ignore any
content on the resrerse !aide

DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
Wildlife Resources Commission
Frank McBride
Owen Anderson
Division of Parks and Recreation
Steve Hall
Office of Coastal Management
Steve Benton
Groundwater Section
Brian Wagner
U.S. Fish and Wildlife
Kim Tripp
U.S. Fish and Wildlife
Mark Cantrell
ROUTING SLIP
Air Quality Section
Alan Klimek
State Clearinghouse
Chrys Baggett
Cultural Resources
Renee Gledhill -Earley
Environmental Health
Faith Abbott
Water Quality Planning
Michelle Suverkrubbe
Water Resources
Woodrow Yonts
Forest Resources
Don Robbins
Waste Reduction
Lindsay Mize
Marine Fisheries
Mike Street
"NAS-ellx1Vj
ex
SUBJECT: Environmental Review -
201 Facilities Plan
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You are requested to review the attached 201 Facility Plan. Your comments will be
incorporated in the project environmental review and circulated to interested government
agencies and public groups.
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Reviewers are requested to'return the plan with comments to:
Your response is requested/
Interoffice: Reginald R. Sutton
Division of Water Quality
Construction Grants & Loans Section
Parker Lincoln Building
Raleigh, NC Courier -14: 52-01-00
Mailing: Reginald R. Sutton
Division of Water Quality
Construction Grants & Loans Section
P.O. Box 29579
Raleigh, N.C. 27626-0579
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41-1(171

ENVIRONMENTAL ASSESSMENT
CALDWELL COUNTY/US 321 CORRIDOR
201 WASTEWATER PLAN UPDATE
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Prepared by
Western Piedmont Council of Governments
317 1d Ave. N.W.
Hickory, NC 28601

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I. Proposed facilities and actions
Six local governments in Caldwell County and the City of Hickory have been
working over the last year to update the 201 wastewater plan for Caldwell County.
Caldwell County is experiencing tremendous growth in the southern portion of the county
along the US 321 corridor. The purpose of the study is to determine the most feasible
way to treat wastewater in the above area.
The project proposes a 1.2 MGD upgrade of Lenoir's Gunpowder Creek WWTP.
Lenoir's Lower Creek WWTP is sufficiently sized to handle the area that naturally drains
to it within the study area. Flow from the southern portion of the study area would be
pumped into Hickory's system. Granite Falls will be able to handle the majority of the
Town's flow for the next twenty year period. A small portion of the flow from Granite
Falls ETJ will need to be sent to Hickory by the end of the twenty year period.
The project is divided into two ten-year phases of construction based upon projected
demand. Each phases is described in detail in the following sections.
,,lig) Phase 1 Construction
Phase 1 of construction includes 71,970 if of gravity sewer, 24,300 if of force main
1.1 and 4 pump stations. The line segments are named by the letter that are at each end of
pipe. The majority of construction is designed to extend sewer service to unsewered
areas. The exception is the replacement of the Billy Branch interceptor (lines R-T, S-
109 U-PG) in Granite Falls.
Two major gravity systems are planned in the first phase, as well as several smaller
lines. The first system extends from Hudson west towards Cajahs Mountain (lines A-C,B-
C, and C-D). This line (19,570 LF of 8" and 12" line) will send wastewater flow from
Cajahs Mountain into the existing Hudson system and then into the Gunpowder Creek
WWTP.
Near the Town of Sawmills, 12,500 LF of 12" (line E-P5) gravity sewer will flow
to a new 2,800 GPM pump station. The flow will then be transported to the existing
Gunpowder Creek WWTP by a new 13,000 LF 24" force main (P5-Gunpowder WWTP).
In the Granite Falls area, a new 540 GPM pump station will be constructed.
Wastewater will then be transported by a new 3,800 LF 8" force main (line P3-R). At
0.9 this point, a new 16,500 LF 8" and 12" line (lines R-T, S-T,T-U) will be constructed to
replace the existing line on Billy Branch. At this point, a new 12,000 LF 12" line will
intersect (line P-U). From this point a new 3,000 LF 15" (line U-PG) will be constructed
which will flow to the existing Granite Falls WWTP on Gunpowder Creek.
South of Granite Falls a new 2610 GPM pump station will be constructed. Also, a
new 5,800 LF 6" force main (line P4-O) will be constructed and 8,400 LF of 12" gravity

line (line 0-P0) will be installed. This line will connect into an existing pump station and
the wastewater will be transported across the lake to be treated by the City of Hickory's
existing Henry Fork and Northeast WWTP's.
During years 1-10, the Gunpowder WWTP capacity will be increased from 2.0
MGD to 3.2 MGD.
6.1 Phase 2
During years 11-20, there are four areas in the project that where new sewerlines
and pump stations will be constructed. In the Hudson area, a 4,500 LF 15" gravity
sewerline (line PH-G) will be constructed. In addition, 3,000 LF of 15" gravity sewer
(line G-E) will be constructed downstream from the above 4,500 LF segment. These
new lines will flow to Gunpowder WWTP. A new 13,500 LF 12" (line H-P5) will be
constructed along Gunpowder Creek and will flow to pump station P5 which will pump to
Gunpowder WWTP.
The major new lines to be constructed will be in the southern portion of Sawmills.
There will be 8,000 LF of 8" sewerline (lines K-M, J-M) and 9,500 LF of 12" sewerline
(line M-P2)
P2) constructed that will flow toward Lake Rhodhiss along Freemason Creek.
As this line reaches Lake Rhodhiss, a new pump station will be constructed and 16,500 LF
of 8" force main (line P2-I) will be constructed which will transport the waste to a gravity
system in Sawmills being constructed under the CDBG grant program. A new 6,000 LF
12" sewerline (line L-P3) will be constructed near Granite Falls and feed into the pump
F, station to be constructed during years 1-10.
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East of US 321 and Granite Falls, 6,200 LF of 8" sewerline (line Q-P6) will be
constructed. This new line will flow into a new pump station. The waste will then be
transported by a new 8,600 LF 8" force main (line P6- Granite Falls WWTP) to the
existing Granite Falls WWTP (For further details on proposed line segment, please refer to
maps enclosed).
The projected wastewater flow for the next 20 years for the project area is 8.11
MGD. The alternative selected treats wastewater flows at four locations. These are
listed below:
PLANT
YEAR 0
YEAR 10
YEAR 20
Lower Creek
WWTP
1.78
2.58
3.11
Gunpowder Creek
WWTP
1.05
2.41
3.2
Granite Falls
WWTP
0.47
0.76
0.9
Pump to Hickog
0
0.5
0.9 1

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It should be noted that Lower Creek WWTP operated by the City of Lenoir is
,m%, under a Special Order of Consent (SOC) to improve ammonia removal at the Lower
Creek WWTP. The City is planning an upgrade of the plant which will increase capacity
to 6.0 MGD. The Gunpowder Creek WWTP will be increased from 2.0 MGD to 3.2
MGD under the plan.
The total projected costs for the above alternative is $19,764,000. As mentioned
above these costs are in two phases over a twenty year period.
Fin II. Existing Environment
Location
The project area is located in southern part of Caldwell County. The study area
follows the US 321 corridor from Lake Hickory going north to the City of Lenoir. The
western edge of the project is the Town of Cajahs Mountain. Most of the proposed new
construction will occur west of US 321. All of the proposed new improvements will
occur from Lake Hickory north to the Town of Hudson. From Hudson to the City of
Lenoir, existing lines and the existing Lower Creek WWTP which is under a SOC will
treat the waste for this area.
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Topography and Soils
The southern part of Caldwell County is Located in the Piedmont area of North
Carolina. The geology of the area is composed of metamorphic rocks of the inner
piedmont. The area is part of the Milton belt which consists of gneiss, schists and
amphibolite. Topography in the project area consists of rolling terrain with moderate
,mi slopes. The highest elevation in the project area is 1,600' located near the Town of
Cajahs Mountain near Little Gunpowder Creek and several locations near Gunpowder
Creek east of US 321 which are also 1,600'. The lowest point would be Lake Hickory
r=, which is 930'.
The soils in the project area are predominantly in the Cecil-Pacolet-Rion
rwl Association. These soils are gently sloping to steep, mainly gravelly soils that have a
subsoil that is dominently red, friable clay loam or firm clay; on long, narrow, winding
ridgetops and long side slopes. There is a small area of Cecil-Pacolet-Appling
Association near lake Rhodhiss south of Sawmills. These soils are characterized being
gently sloping to moderately steep soils that have a subsoil that is dominently red or
strong -brown and brown, firm clay; on broad ridgetops and short side slopes. At the
'"' extreme northern end of the project area along Lower Creek, there is the Chewalcla-
Masada-Congaree Association, these soils are well drained to moderately well drained
that have formed in recent alluvium on floodplains. According to the Caldwell County
Soil Survey, the soil limitations for septic tank absorption fields would be moderate to

severe. In particular, Cecil-Pacolet-Rion which is the predominent association has
moderate to severe conditions which are unfavorable to septic tank drainfields. These
soils perc slowly and are on slopes. The Cecil-Pacolet-Appling soils also have moderate
to severe limitations for septic drainfields. These soils perc slowly. At the extreme
northern part of the project area, the Chewalca-Masada-Congaree soils have severe
limitations for septic drainfields. These are due to wetness and slope.
Surface Water
Gunpowder Creek, a class C stream is the major tributary that drains the project
area (See Surface Map). This stream forms south of US 64-18 and flows south and east
of US 321 until it empties into Lake Hickory. Little Gunpowder Creek is the major
tributary of Gunpowder Creek and forms in the Town of Cajahs Mountain. It flows west
to southeast before merging with Gunpowder Creek east of US 321 near Sawmills. Most
of the new sewerlines and pump stations will be constructed along Gunpowder Creek and
Little Gunpowder Creek. Gunpowder Creek is a class "C" stream. A review of the
'w' Catawba River Basinwide Water Quality Management Plan, published in 1995 shows
there are no monitoring locations on Gunpowder Creek or its tributaries.
1-9
New lines will also be construced along Freemason and Hayes Mill Creeks which
drain into Lake Rhodhiss west of US 321. East of US 321, a new line will follow Silver
rw, Creek which drain into Gunpowder Creek. .
Lower Creek drains the extreme northern portion of the project area north of the
Gunpowder drainage (See Surface Map). This creek flows through the City of Lenoir
and drains northeast to southwest. No new lines or pump stations will be constructed in
this drainage basin. The Lower Creek WWTP will be upgraded. According to the
Fi+ Catawba River Basinwide Water Quality Management Plan, published in 1995, Lower
Creek is considered to be partially supporting its uses. Both chemical and biological
monitoring sites are located on the stream. The problems appear to be fecal and
sedimentation which is attributed to both point and nonpoint sources.
The following are the 7Q10 and 30Q2 rates for Gunpowder Creek. The 7Q10
''n rates for Granite Falls WWTP located on Gunpowder Creek are 9.3 cubic feet per second
in the summer and 12 cubic feet per second in the winter. The 30Q2 rate for the
Gunpowder Creek at the Granite Falls WWTP is 17 cubic feet per second.
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The 7Q10 rates for the Gunpowder WWTP located on Gunpowder Creek is 3
cubic feet per second in the summer and 4.3 cubic feet per second in the winter. The
30Q2 rate for the Gunpowder WWTP is 5.8 cubic feet per second. These are the only
two discharges located on the Gunpowder Creek basin. Over the last several years
discharges have been consolidated to the remaining two which are Gunpowder Creek
WWTP owned by the City of Lenoir and Granite Falls WWTP.
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The 7Q10 rate for the Lower Creek WWTP is 9.3 cubic feet per second in the
�., summer and 14.4 cubic feet per second in the winter. The 30Q2 rate for the Lower Creek
WWTP is 24.4 cubic feet per second. There are four NPDES permits located on Lower
Creek Over the last several years, many smaller dischargers have consolidated into the
remaining dischargers.
There are several small dischargers that discharge into small streams that flow
directly into Lakes Hickory and Rhodhiss. The proposed project will improve water
quality by consolidating these smaller dischargers into Gunpowder Creek WWTP and
Lower Creek WWTP.
The source of potable water for Granite Falls, Hudson, Sawmills, Caldwell
County, Cajahs Mountain and Lenoir is Lake Rhodhiss. The above local governments are
served by two water treatment plants on the lake. These are the Granite Falls and Lenoir
plants. The City of Hickory is served by its water treatment plant located on Lake
Hickory.
R. The City of Ilckory has contingency plans in case of an accidental spill which
would threaten the water intake at the City of Hickory. Over the last several years, the
City has lowered there intake to 25 feet below the surface of the lake. Therefore, most of
r. the potential contaminants would not reach it.
WI Groundwater
Groundwater use in the southern part of Caldwell County is currently by rural
residents only, who are not located near municipal water service. No municipalities in the
county use ground water for water supply.
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Land Use
Land use in the project area relates to the US 321 corridor and US 321-A which
parallels US 321. Beginning with the City of Lenoir at the northern end of the project
area, the corridor is incorporated within the corporate limits of various local governments
all the way south to Lake Hickory. South of Lenoir is Hudson, followed by Sawmills and
Granite Falls. In addition, the City of Hickory has annexed land for a large industry north
of Lake Hickory near Granite Falls.
Outside of the municipal boundaries, the land tends to be a mix of agricultural and
residential. Commercial and industrial development tends to be located where there is the
• availability of sewer service (see map of existing sewer service). Again, this follows the
US 321 corridor and is located within the municipalities. Furniture manufacturing and
related industries are predominant in the southern part of the County.

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Besides US 321 and US 321-A, the other major transportation corridor is the
Norfolk -Southern Railroad which follows US 321-A from Granite Falls to Lenoir.
Activity along the railroad is limited to one train a day which services industries.
As mentioned previously, the southern part of the county is the fastest growing
area in the county. One of the prime reasons is the close proximately to the City of
im Hickory. The Northlakes area which borders Lake Hickory has experienced tremendous
residential growth over the last few years.
M+ The entire project area is included in zoning and land development plans by the
various local governments. These are the City of Lenoir, Town of Hudson, Town of
Cajahs Mountain, Town of Hudson, Town of Sawmills, Town of Granite Falls, City of
'.' Hickory and Caldwell County.
A., Existing wastewater facilities
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Wastewater service along the US 321 Corridor is provided by treatment facilities
owned and operated by the City of Lenoir (Lower Creek WWTP and Gunpowder Creek
WWTP), the Town of Granite Falls and the City of Hickory.
The Town of Hudson collects wastewater within its Town limits and pumps the
wastewater to the Gunpowder Creek WWTP for treatment.
The City of Lenoir operates the Lower Creek WWTP west of the City. The
facility was built in the early 1970's and has been upgraded several times since then. The
Rim treatment plant is currently rated at 4.0 MGD. There have been significant deficiencies
with the plant and include the inability to meet nitrogen standards prior to discharge into
Lower Creek. The City of Lenoir is currently under an SOC to upgrade to meet nitrogen
'�' limits. A plan of action has been submitted to the Division of Water Quality for the
required plant upgrades.
The City operates a second WWTP on Gunpowder Creek approximately 1 mile
below Mountain Road. This facility constructed in the rnid 1970's was recently upgraded
and converted to a sequence batch reactor process. The current facility is rated 2.0
MGD. Gunpowder Creek WWTP is currently meeting all of its effluent limits, and has
been designed to achieve more stringent limits anticipated in future permit renewals.
The Town of Granite Falls owns and operates an oxidation ditch type facility
which discharges into Gunpowder Creek below the lake. This facility was upgraded in
PM the mid 1980's. The treatment plant, permitted for a flow of 0.09 MGD, currently
operates at approximately 0.48 MGD, and is in compliance with current NPDES .permit
requirements.

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The City of Hickory recently constructed a system of collection sewers, pumping
stations and force mains to extend service north of the City along US 321, across the
Catawba River, to the Northlakes area and the MD1 industrial park. The existing system
is rated at 700 GPM, and discharges flow across the Catawba River into the transportation
and disposal system operated by the City of Hickory. Both of the Hickory's WWTP's
have been upgraded recently and flows received from the US 321 corridor service area can
be treated at either the Northeast or the Henry Fork WWTP's.
The Town of Sawmills is currently planing and started construction on a
wastewater collection system to serve the entire town.
The Town of Cajahs Mountain has also initiated construction of a wastewater
collection system and has entered into a contract with the City of Lenoir for wastewater
treatment. The Gunpowder Creek WWTP will receive the Town's waste.
III. Need
Population and flow projections show the need for the extension of sewer lines in
southern Caldwell County. The existing flows in Caldwell County are 3.30 MGD. This
is treated at Lower Creek WWTP, Gunpowder WWTP and Granite Falls WWTP. The
projected wastewater flows for years 2006 and 2016 are summarized in the table below:
SOURCE
2006 AVERAGE PEAK
2016 AVERAGE PEAK .
Residential
2.90
3.19 !
Industrial
1.04
1.38
Institutional
2.09
2.78 i
Wet Weather I/1
0.80
0.84
Totals
6.83
8,11
As can be seen from the table with the growth that is occurring in the project area,
wastewater flows will increase dramatically. There is a need to increase capacity at the
Gunpowder Creek WWTP from the current 2.0 MGD to 3.2 to handle the increase.
Also, the City of Lenoir's upgrade of Lower Creek WWTP will increase capacity to
handle future growth.
There are many unsewered areas where development is occurring. In particular,
the Northlakes area on Lake Hickory has had a septic tank failure rate of over 10%. New
lines and pump stations will need to be constructed to transport the wastewater to the
appropriate WWTP.

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IV. Alternative Analysis
There were six alternatives that were examined to transport wastewater in the
most efficient way. These are as follows:
Alternative 1
Alternative 1 attempts to move the 20-year projected flow in the study area by
letting the basin each drain naturally to the nearest facility with a few areas that will have
to be pumped into the nearest gravity line. In this scenrio, the Gunpowder Creek WWTP
would have to be upgraded from 2.0 MGD to 3.2 MGD, while the Lower Creek and
Granite Falls WWTPs would remain at their current construction and utilized to their
fa, maximum capacities. Flow from Cajah's Mountain, Sawmills and Hudson would be
pumped to the Gunpowder Creek WWTP. The smaller basins along the lake will produce
approximately 900,000 GPD which would be pumped to Hickory.
Alternative 2
Owl The second alternative is similar to the first with the exception of the 1.2 MGD
upgrade of the Gunpowder Creek WWTP. This plant would be used to its full 2.00
MGD capacity and provide service for Cajahs Mountain, Hudson and part of Lenoir.
Sawmills would drain into the Granite Falls system with the excess wastewater being
transported to Hickory via a 2.1 MGD pump station.
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Alternative 3
The third alternative proposes to treat all of the wastewater within the study area.
No wastewater would be pumped to Hickory and the existing plants would be used to the
maximum of their existing capacities. A new regional 2.1 MGD WWTP would be built
downstream of the Granite Falls plant to handle the excess flows. The designed plant
would be either land application or surface discharge.
Alternative 4
Alternative 4 requires an upgrade to the Lower Creek WWTP. In this alternative,
,�► 1.2 MGD is pumped from the base of Lenoir over the ridge to the Lower Creek WWTP.
The Lower Creek WWTP would be upgraded by 1.2 MGD. Cajahs Mountain, Sawmills,
and Hudson would be pumped into the Gunpowder Creek Plant. As in Alternative 1, the
smaller basins will be pumped to Hickory through a 900,000 GPD pump station.
Alternative 5
Alternative 5 is almost identical to Alternative 4 with the exception of the
treatment of wastewater from the smaller, southernmost basins. In this alternative, the
flow from these basins is collected and pumped into the Granite Falls WWTP, which

Aim
would have to be expanded from 0.9 MGD to 1.8 MGD. Alternatives 4 and 5 differ in
one other aspect, in Alternative 4 Hudson will abandon their existing pump station after
ten years and gravity into a larger pump station downstream, while in alternative 5 they
continue to utilize their existing pump station for the entire 20 year period. In both cases,
their flow is received by the Gunpowder Creek WWTP.
Alternative 6
Alternative 6 is a variation of Alternative 1 that collects the 900,000 GPD that
flows to the southernmost portion of the study area and pumps it into the Granite Falls
"IR collection system instead of the Hickory system. To accommodate the additional flow, the
Granite Falls WWTP would be upgraded from 0.9 MGD to 1.8 MGD in this alternative.
The recommended alternative is based upon capital costs, and two separate sets of
present worth calculations is alternative 1. This alternative requires the least amount of
pumping and the most effective placement of excess treatment capacity. This alternative
would also make the best use of existing wastewater treatment facilities.
1.►
V. Environmental Effects
A. Proposed lines and habitat
As previously mentioned, this project will occur in two phases. These are years 1-
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10 and years 11-20. There are two major gravity systems in this first phase as well as
smaller lines.
Phase 1 (years 1 to 10)
pitThe first system extends sewer from the Town of Cajahs Mountain to Hudson
(lines A-C, B-C and C-D). In addition, 1,700' of force main will pump to Line A-C.
These lines will send wastewater flow into the existing Hudson system and then into the
Gunpowder Creek Wastewater Treatment Plant. Beginning in the Town of Cajahs
Mountain, Line P1 to A is a 4" force main that goes 1,700' along a previously disturbed
wooded area ending on the Connelly Springs Rd. Line A to C is 5,570' of 8" gravity
sewer. The first 3,000' of this line goes through a wooded area dropping in elevation.
The remaining 2,570' of this map goes through cleared grass pasture land with a small
area of riparian growth roughly 50' from the small tributary that has formed. Line A to C
terminates at the mouth of Little Gunpowder Creek. Line B to C is a 6,500' 8" gravity
sewer. The first 500' of line goes through commercial residential development with a
small riparian zone along the small unnamed tributary. The next 4,000' of line goes
generally through previously timbered land. The next 500' of line goes near a residential
area which is to its north. The remaining section of Line B to C is cleared pasture land on
the north and wooded land on the south. This line merges with Line A to C at start of
Little Gunpowder Creek. Line C to D follows Little Gunpowder Creek and is a 7,500'
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12" gravity sewer line. From the start of Gunpowder Creek to Little Gunpowder Creek
Road (2,000') the south side of the creek is cleared pasture land with a small riparian
zone. The north side is previously timbered. The remaining 5,500' of line is wooded with
some residential growth.
The second major gravity system will carry Sawmills flow to Gunpowder Creek
Treatment facility for ultimate treatment (E to P5 and a force main P5 to Gunpowder
Creek WWTP. Line E to pump station P5 is a 15" 12,500' gravity sewer line that follows
Little Gunpowder Creek. This proposed line is split by US 321 about halfway along its
route. From E to US 321, the northern side of Gunpowder Creek is wooded with
^g+ commercial and residential growth the last 1000' before reaching US 321. The southern
side of the creek is a mix of wooded and pasture before it reaches US 321. From US 321
to P5 is wooded along Gunpowder Creek. At P5, is the confluence of Little Gunpowder
''' and Gunpowder Creeks. It should be noted that a portion of Lines E to P5 will be built
by the Town of Sawmills with funds obtained from an Appalachian Regional Commission
grant. Line P5 to Gunpowder Creek WWTP is a 16" 13,000' force main. This line will
''41 follow existing DOT right-of-ways its entire route. The habitat is mostly residential with
some cleared and wooded land.
The flow from the south side of Granite Falls will be collected by a gravity line L
to P3. This 12" 6,000' line follows Hayes Mill Creek before it runs into pump station P5
which is near Lake Rhodhiss. Line L to P3 starts 1,500' upstream from Dry Ponds Road.
This area is a mix of riparian, wooded, pasture and residential. Below Dry Ponds Road,
the remainder of this land is wooded and owned by Crescent Resources. This area has
been timbered within the last five years all the way down to pump station P5. Line P3 to
R (Billy Branch Interceptor) is a 3,800 8" force main. This line will follow DOT right-
of-ways and the land which is a mix of woods, pasture and residential has been previously
disturbed. The Billy Branch Interceptor (Lines R to T, S to T, T to U and U to PG is an
existing sewerline which will be replaced. The new line will run parallel to the old line
along an existing utility easement. Line R to T is a mix of commercial ,wooded and
"'' residential. Line S to T follows US 321 through a highly developed area. Line T to U
has some commercial growth near US 321 and the remainder of the line which intersects
Gunpowder Creek is wooded. Line U to PG is a mix of commercial (near US 321)
residential and wooded. This portion of Gunpowder Creek is an impoundment. At
pump station PG the flow is pumped to the Granite Falls WWTP which is near the existing
pump station PG. Line P to U is a gravity line which will serve an unsewered area north
10' of Granite Falls. This 12,000' 12' line follows Gunpowder Creek. This line has a
wooded riparian zone along the creek with open fields.
The remaining portion of line to be built during phase one is south of Granite Falls.
These lines (P4 to 0 and 0 to PO) follow the DOT right-of-ways for US 321-A and US
,., 321. P4 to 0 is a 6" 4,800' force main. Line 0 to existing pump station PO is a 8,400'
12' gravity sewer line. The flow from these lines will go into the City of Hickory's
system to be treated.

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In addition to the line work, a 1.2 MGD upgrade will be required at the
�•, Gunpowder Creek WWTP. This site has been previously disturbed and was recently
upgraded. All of the proposed improvements will occur within land owned by the City
of Lenoir which has been previously disturbed.
Phase 2 (Years 11 to 20)
The largest project planned during phase 2 is the expansion of the Sawmills
collection system. This project includes a system of gravity lines (K to M, J to M, and M
to P2) that drain to a pump station which will be located on the shores of Lake Rhodhiss
`a`' (P2) and a force main (P2 to I) that carries the waste into the proposed Sawmills system at
US 321-A. Line K to M is a 4,000' 8" gravity sewer line which follows a tributary of
Freemason Creek. This line is residential with a small riparian area near the creek. Line
3 to M follows Freemason Creek and is 4,000 and 8" in diameter. The upper 2,000' is
residential while the lower 2,000 is wooded with a small area of open pasture on the west
side of the creek. Line M to P2 is a 9,500' 12" gravity line which follows Freemason
Creek. The area upstream from Dry Ponds Road (5,000') is mostly pasture open land
with a wooded riparian area east of the creek. From Dry Ponds road to the pump station
P2, this area is entirely wooded and owned by Crescent Resources. This land has been
timbered in the last five years. Line P2 to I is a 16,500' 8" force main. This section of
line follows DOT right-of-ways along existing paved roads. The 7,000' from P2 toward I
�*+ is residential and wooded on the north side of Dry Ponds Road and open pasture land on
the south side. Moving north toward I and Sawmills, the area is residential with an
occasional open field.
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There are two sections of line (PH to G and G to E) that follow Little Gunpowder
Creek in Sawmills that will be built. Line PH to G is a 4,500' 8" line that goes from
"" existing pump station PH to Mission Road bridge. This area is wooded with some
commercial growth 2,000 upstream from Mission Road bridge. Line G to E is a 12"
4,400' line. This area is wooded on the east side of the stream and open land with a
small riparian zone on the east side. It should be noted that a major portion of line G to E
will be constructed by the Town of Sawmills in 1997 with a grant from the Appalachian
Regional Commission.
East of Hudson Line H to P5 is a 13,500' 12" gravity line which flows along
rim Gunpowder Creek to the intersection of Little Gunpowder and Gunpowder Creeks. The
upper 4,000' of line is open fields with riparian zones. The remainder of the line flows
through wooded undisturbed areas.
The eastern section of Granite Falls will be served by a gravity line (Q to P6) and a
force main P6 to the Granite Falls WWTP. This line is a 3,200' 8" line. Line Q to P6
follows Silver Creek and is wooded with a small residential portion near the upper 500' of
the line. Line P6 to the Granite Falls WWTP is a 8,600' 8" force main. This line starts
at the proposed pump station P6 which is located on Lake Hickory. The line flows 6,000
"" along an existing gravel road which is wooded with some pasture land. The remaining

2,000' will follow a DOT right-of-way along a paved road. The first 1,000 of line flows
near open pastures while the remainder of the line flows in a wooded area.
The last portion of line is south of Granite Falls. This line (N to P4) follows the
cir US 321-A right-of-way. The 4,000' line is 12" in diameter. This area is heavily
developed with residential and some businesses.
B. Changes in Land
Changes in land use are minimal where the outfall corridor parallels and existing
utility easement or road right-of-way. Also, in areas where residential or commercial
development occurs the impacts will be minimal. In areas where this does not occur,
wetlands, woodlands and agriculture will be impacted. These will occur primarily along
Little Gunpowder and Gunpowder Creeks. Accurate impacts will depend on the exact
location of lines and creek crossings which is not know at the present time.
The Gunpowder Creek and Lower Creek WWTP's will not impact
,., agricultural,wetlands and woodlands since the plant upgrades occur on existing sites
which have been cleared and previously disturbed.
Pal
1*
0111
The estimated changes in land use shown below are based on maintaining a 30 foot
permanent right-of-way. The primary impacts are as follows:
Phase 1 (Years 1-10)
LINE #
TOTAL LF OF
LINE
ACRES OF
WETLANDS
IMPACTED
WOODED
ACRES
FARMLAND
ACRES
IMPACTED
IMPACTED
P I to A
1,700
0
1.17
0
A to C
5,700
_ 0
2.84
1.00
B to C
6,500
0
3.79
0.69
CtoD
7,500
1.2
2.76
1.21
E to P5
12,500
0.34
6.20
0.34
L to P3
6,000
0.30
3.10
0.30
P to U
12,000
0.52
5.34
2.75
TOTAL
51,900
2.06
25.20
6.29
Eggri

Rip
MEI
fon
Phase 2 (Years 11-20)
LINE #
TOTAL LF OF
LINE
ACRES OF
WETLANDS
IMPACTED
WOODED
ACRES
IMPACTED
FARMLAND
ACRES
IMPACTED
K to M
4,000
0
0.69
0
J to M
4,000
0
1.38
0
M to P2
9,500
0.3
3.44
2.75
PH to G
4,500
0
2.07
0.69
H to P5
13,500
0
7.92
1.38
Q to P6
6,200
0
1.86
0
TOTAL
41,700 ,
0.3
17.36
4.82
Following completion of the project, the primary impacts on agricultural lands will
be minimized since agricultural uses can continue to occur.
A secondary impact of the proposed project will be to change undeveloped areas
into other land uses because of the availability of sewer. It should be noted that growth is
occurring and will continue to occur with or without this system.
All development will be in accordance with existing zoning ordinances.
C. Wetlands and floodplains
A review of National Wetlands Inventory Maps provided by the Division of Soil
and Water Conservation show that there are several small areas of wetlands. Along
proposed Line C to D, an area is shown along Little Gunpowder Creek near an existing
line in the Town of Hudson. It is estimated that over an acre of wetlands could be
impacted along Line depending on the route chosen. This is considered to be a seasonal
wetland. Near Sawmills a very small wetland exists along proposed line E to P5. Along
proposed line L to P3, a small wetland is shown near Lake Rhodhiss at the mouth of
A•+ Hayes Mill Creek. Along line P to U, three small wetlands are shown along Gunpowder
Creek. Along line M to P2 a small wetland area is shown near Lake Rhodhiss at the
mouth of Freemason Creek.
When the exact location of the proposed lines are determined, the US Army Corps
of Engineers will be contacted to determine the exact location of wetlands. If creek
min crossings will occur, a Nationwide permit will be obtained as well as a 401 Water Quality
Certification.
FRI
The improvements to the Gunpowder and Lower Creek WWTP's will occur on
existing sits and wetlands will not be affected.

AIM
furl
Some of the proposed lines particularly along Gunpowder Creek are located in a
floodplain. The proposed lines will not be affected by flooding or will they affect the
floodplain.
D. Prime or unique agricultural lands
There are no prime or unique agricultural lands that will be directly affected by the
project. Most of the agricultural land affected is pasture land. There will be some short-
term impacts on agricultural lands during the construction phase. It is estimated that
during the first ten years of the project 6.29 acres of farmland will be impacted assuming a
30 permanent construction corridor. During the second ten years another 4.82 acres will
be impacted.
The biggest threat to the agricultural lands is rapid growth from residential and
commercial development that is occurring without a municipal system.
E. Public lands such as parks (state, federal or local)
There are no public lands such as parks located near the proposed project
elements. The Pisgah National Forest is the closest public lands and it is approximately
25 miles north of the project area.
F. Scenic and recreational areas
A'^ There are no designated scenic or recreational areas located in or near the project
area. Most of the undeveloped land that is considered to have scenic and recreational
qualities is located north of Lenoir in Pisgah National Forest.
G. Areas of archeological or historical value
In a preliminary review with the State Historic Preservation Office (SHPO) in
Asheville, project maps were shown to staff. There are no known areas of architectural
or historical significance in the project area. However, a closer review will need to be
made when the exact location of the proposed lines is determined. At this time, the
SHPO may recommend an archeological survey for a portion of the proposed project area.
When scoping comments are made by the SHPO, archeological surveys will be conducted
if recommended by the agency. Scoping comments from SHPO recommended
fl Archeological Surveys for all lines that would be constructed along creeks or non right-of-
way areas. Since specific line placements are not available at the present time, the
recommendations will be followed as specific projects develop from the 20 year plan.
RBI

Both the Gunpowder and Lower Creek WWTP's proposed improvements will
occur on previously disturbed sites. According to Environmental Assessments conducted
at both of the plant in 1994 and 1997, the proposed improvements should not impact
historical or archeological resources.
H. Air Quality
There may be a slight increase in the particulate level during the construction phase
of the project. This will occur from the use of heavy construction equipment used during
the project. However, this will abate upon completion of the project. The gravity
outfalls and force mains will be located underground assuring minimal air emissions.
According to Environmental Assessments completed by McGill and Associates,
the proposed improvements to the Lower Creek plant should not affect air quality. Also,
during the last plant upgrade of the Gunpowder Creek plant, air quality was not affected
by the improvements.
Another indirect effect would be the upgraded capacity could potentially
encourage growth in the project area. The indirect effects will be directly dependent on
the types of industries that develop and the degree of enforcement of the North Carolina
air quality regulations. With proper enforcement of regulations, the effects should be
insignificant.
I. Groundwater quality
fo+ There will be beneficial impacts on groundwater quality with the elimination of
failing septic tanks. No adverse impacts are anticipated from any of the elements of the
proposed project.
Ran
J. Noise levels
There may be a slight increase in noise levels during the construction phase of the
project. This will be temporary and will stop upon completion of the project. Motors and
blower used at the proposed pump stations and the WWTP's to be upgraded will be put in
enclosures to minimize noise generated with operation.
Indirect effects of noise are that increased development would result in increased
noise due to normal urban and rural development, traffic, factories or other industries..

K. Water supplies
According to the Division of Environmental Management, there are no water
intakes in the proposed project area. The nearest water intakes are located on Lakes
rEE Hickory and Rhodhiss.
During the construction phase of the project, there could be some sedimentation
that enters Lower Creek and Gunpowder Creek which feed into Lakes Rhodhiss and
Hickory. However, the water treatment plants on the above lakes are located some
distance downstream from the proposed project area.
L. Shellfish or fish and their habitats
A listing of rare species that may be located in Caldwell County as provided by the
North Carolina Natural Heritage Program is included in the attachments. Four
invertebrates are listed as rare in North Carolina, but no fish or shellfish are listed as
endangered or threatened on a National level. A project review was made with the NC
Natural Heritage Program and it was determined that none of the flora or fauna
inventoried by the agency has been identified in the proposed project area.
There were five plants during the review of the NC Natural Heritage maps for
Caldwell County that were identified in other areas of Caldwell County within 5 to 10
miles of the project area. These are the dwarf -flowered heartleaf, Carolina saxifrage,
dwarf chinquapin oak, sweet pinesap and sticky bog asphodel. The dwarf -flowered
heartleaf is considered to be federally threatened.
Rim The Lower Creek WWTP has experienced difficulty in removing ammonia.
Ammonia -nitrogen can cause a depletion in dissolved oxygen and have an adverse affect
on fish. The main objective of the proposed upgrade at the Lower Creek WWTP is to
reduce the concentration of ammonia in the effluent to less than 2.0 mg/1 (see attachment).
The Gunpowder Creek WWTP experienced an upgrade in 1995. As part of the
upgrade ammonia was limited to 2 milligrams per liter in the summer and 4 milligrams per
liter in the winter. All of the other improvements at that time had a beneficial impact on
fish. Since the plant is meeting its requirements it is assumed that the speculative limits
will be similar for the proposed upgrade to 3.2 MGD.
The Granite Falls WWTP and the Hickory WWTP's will not have an impact on
shellfish or fish since no modifications to the existing plants will need to be made and both
plants are currently meeting their NPDES permit requirements.
There are no trout waters in the project area.

M. Wildlife and their habitats
A listing of rare and threatened species for Caldwell County as provided by the
North Carolina Natural Heritage Program is included in the attachments under Agency
correspondence. The spruce moss spider is the only listed species that is endangered.
A review of the North Carolina Natural Heritage Program map for Caldwell County
showed no rare and threatened species of wildlife in or near the proposed project area.
In their scoping comments, The US Fish and Wildlife concurred that the project
would not affect federally listed species and they felt that the requirements of Section 7of
the Endangered Species Act are fulfilled (See attachment).
Indirect effects of the project are that new development may push wildlife present
to other habitats.
N. Introduction of toxic substances
1.4 There will be no toxic substances used in the sewer line construction or
construction of the pump stations. The upgrade of the Lower Creek WWTP will reduce
the amounts of ammonia and chlorine to the creek. NCDEHNR has indicated that a
complete evaluation of limits and monitoring requirements for metals and other toxicants
will be addressed at the time of a formal_NPDES permit application (see attachment).
The Gunpowder Creek WWTP has met its effluent requirements for metals
before and after the last plant upgrade in 1995.
O. Impacts on receiving waters
1.1
The project should not affect the waters discharged by the Granite Falls WWTP or
the Hickory WWTP's. These facilities have the capacity to handle the waste that they are
expected to receive over the next 20 years. This 201 plan does not call for any
modification or upgrade of the above facilities. They are currently meeting their NPDES
permit requirements.
During the last upgrade of the Gunpowder Creek WWTP from 1.0 MGD to 2.0
MGD. The City of Lenoir was required to monitor total phosphorous, total nitrogen,
�•► chlorophyll a, and pheophytin downstream at Old Millpond in Granite Falls to determine
whether the Gunpowder Creek discharge was creating the potential for eutrophication.
The results from 1993 and 1994 were favorable and the City has continued to monitor the
pond at part of their requirement for their NPDES permit. -.
The Lower Creek plant is currently under an SOC to meet ammonia limits. The
main objective of the upgrade is to reduce the amount of ammonia nitrogen discharged in

1
fox,
ran
fowl
Ps,
rw,
rEmi
the stream. The design of 6.0 MGD will be significantly less than that currently being
discharged at 2.2 MGD.
Mitigating measures will be used to decrease the amount of sediment during the
construction phase of the sewer lines and pump stations. These include anti -erosion and
sedimentation control.
P. Indirect Impacts
The major indirect impacts from this project will be the residential, commercial and
industrial growth associated with having the availability of sewer service. Changes in
land use in surrounding areas could result from more growth. Prime farmland could
change with large residential and commercial developments being attracted to an area
because of the availability of sewer service. Public land could be impacted if more
development occurs since there would be less land available. Air quality could be effected
as more growth occurs due to the availability of municipal sewer. Indirect effects on
groundwater as a result of increased development will be dependent on the enforcement of
setbacks from wells. Noise levels could increase as an indirect effect of growth in the
area as traffic industries and factories increase. Indirect impacts on surface water would
be increased sediment entering streams from development. If regulations are followed
this could be minimized. Increased sediment to streams could be minimized if the
Sedimentation and Pollution Control Act of 1973 is followed. If areas greater than 1 acre
are to be disturbed then Erosion Plans will need to be submitted and the Act followed.
Additional ways to minimize sediment are to construct sewer lines as far away from
streams as possible and minimize the amount of land being disturbed at one time. Staging
areas for contractors should be minimized to prevent sedimentation. Indirect effects on
water supplies would be similar. Local governments would find it more difficult to treat
water if sedimentation increases. Shellfish and fish would suffer the same fate from
increased development and sedimentation. Again, if existing regulations are followed, the
effects can be minimized.
There are several cumulative impacts of the project. There will be sedimentation
to the streams. However, this will be a short-term impact. With the contruction of
sewerlines, faulty septic tanks will be eliminated. Thus, fecal coliform levels will drop and
water quality improve. If growth follows construction of sewerlines, there will be an
increase in storm water runoff. However, the overall water quality of the stream should
improve in the long run.
VI. Mitigative Measures ,
Construction of the proposed project will cause some adverse environmental
impacts that cannot be avoided. However, use of appropriate control measures and good

r=1
construction practices will minimize adverse effects. These adverse impacts during
construction include:
1. Air pollution will occur from dust and engine exhaust
2. Some soil erosion will occur.
Mitigating measures designed into this project are as follows:
1. Implementation of temporary and permanent anti -erosion and sedimentation
control measures.
2. Sprinkling of dusty areas during construction to control dust.
3. The installation of silencers and enclosures to reduce noises generated by plant
operations.
"' 4. Land disturbance will be limited to areas required for construction and operation
5. Contractors will comply with open burning provisions during any land clearing.
`¢' 6. Adequate wetting, reseeding and covering of disturbed areas will be utilized during
earth moving operations to mitigate any adverse impact from fugitive dust emissions.
rml
To protect fish and wildlife the following additional measures will be taken:
1. Where creek crossings are necessary, sewer lines will be buried in the stream
,, bottom.
2. An undisturbed buffer zone of at least 50 feet will be left where possible to control
sedimentation into streams and provide a travel corridor for wildlife.
rig 3. If riparian areas are disturbed, they will be revegetated with native species as soon
as possible to minimize runoff.
4. The use of heavy equipment in live streams should be avoided.
5. Pesticide, herbicide and fertilizer use should be limited within at least 100 feet of
stream.
6. When specific sewerline routes are determined, the US Army Corps of Engineers
will be contacted to determine whether a 404 permit is needed.
7.Where crossings are necessary, sewerlines should cross streams at right angles to
minimize impacts to riparian area.
"" 8. Stringent erosion control measures will be implemented where soil is disturbed and
maintained until project completion.
9. Temporary or permanent herbaceous vegetation should be planted on all bare soil
within 15 days of ground disturbing activities to provide long-term erosion control.
10. If the scope of the project changes, a new species is listed or new information
reveals impacts of the identified action may affect listed species or critical habitat in a
manner not previously considered, then the project will seek review from US Fish and
Wildlife to determine if federally listed species will be affected.
As specific projects emerge from phase 1(years 1 to 10) and phase 2 (years 11 to
20) of the Caldwell County 201 Wastewater Facilities Plan Update, more detailed work
will need to be done regarding wetlands. Since exact sewer alignments do not exist,

wetland impacts were estimated by referring to National Wetland Inventory Maps. When
PIM detailed alignment maps are developed, appropriate permits should be secured from the
US Army Corps of Engineers. All required mitigations (from the Corps or other State or
Federal agencies) will be provided in final construction documents.
As specific projects develop from the 201 plan that have exact sewer alignments,
these project will be reviewed by the Department of Cultural Resources to determine is an
Archeological Survey is needed.
The wastewater treatment plant discharge rate and effluent limits will be dictated
by the terms of the NPDES permit.
f

Div-4.
r"
4
L` at
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MciQME,(REED
ENGINEERS PLANNERS SURVEYORS
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Cataweli county 1 t1§ 321(.!orrida 1
201 Wasterwater Planning Study
Location Map
Study Area
Municipal Limits

C„-hty , .J 32,E ,Arriuu1 I -
201 Wastewater Planning Study
Existing Service Area
0
0
0
0
Lower Creek WWTP
Gunpowder Creek WWTP
Granite Falls WWTP
Existing Pump Stations
Current Service Areas
Municipal Limits
Scale 1" : 7300'
1 S 0 1 2 3
MILES
vIcIQM&CREE
ENGINEERS PEANNER6 SURVEYORS

1
1
1
131111311 1 1111
CALDWELL COUNTY/US 321 CORRIDOR
201 WASTEWATER UPDATE
* Map Index
• Proposed Sewer Additions
S7
it_ bakl ;..4+4.7P
PAT l'e415r;11414f-W•itt,'\*
Vagi,Varr'ilt,;*=,-A40Adi
* For greater detail on proposed improvements,
see Maps Al through G.
7 '•11W/V.41_
•
• •
'4 ••‘r
•.
MAP G
N

�� �� : " •:%� l J: •. t Cis..,. r 1 ..
4.1-111MATCH WITH MAP
•
•
•
to
raiFi
MAP A
t t• I .
DIAMETER
LF ON
MAP A
TOTAL
LF
WWTP
TREATING
FLOW
Line A to C
8"
5,570
5,570
Gunpowder Ck.
Line B to C
8"
6,500
6,500
Gunpowder Ck.
Line C to D
12"
7,000
7,500
Gunpowder Ck.
Line K to M
8"
3,000
4,000
Gunpowder Ck.
P1 to A
4" Force Main
1,700
1,700
Gunpowder Ck.
Y�
?65
•
l .CALDWELL COUNTY
US 321 CORRIDOR
201 WASTEWATER PLAN
UPDATE
Gravity Collection
Force Main
Pump Station
Existing Gravity
1"=2,000'
rve•in
eater
Joyce)
7
r Lake
'Miss:
•
1.
•
•
iK�zsa=7.4
a..ai
•
Or
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87.

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tion
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c
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1
3
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tf + • •O
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ind View
0
ono
.•♦•4�
AS
ter
• •.
••
\ Miller Hill--• 9•,,
Qa RQ¢ •atft
f
MAP Al
Lenoir
oil b
..0-1DWELL COTJN'i'Y;TJS 321 CORRIDOI
•
201 WASTEWATER PLAN UPDATE
Existing WWTp
The Lower Creek WWTP is under an SOC to
correct ammonia problems. There.will be no
new line work associated with this plant.
1"=2000'
•
•
• rWater
iinp0
• • • •
.
.'

w
•
/
• ;G
•
I�
'r
yy�a /lam
0 1•
• (v�i j ' Fork
• ' 1 1 1� r
Line C to D
DIAMETER OF
LINE
12"
LF ON MAP B
500
TOTAL LF
7,500
WWTP
TREATING
FLOW
Gunpowder Ck.
Line PH to G
15"
4,500
4,500
Line G to E
12"
3,000
3,000
Line E to P5
18"
8,000
12,500
Line J to M
Line P5 to GC
Line P2 to I
A.
8"
24" Force Main
8" Force Main
2,600
9,200
1,200
Lines PH to G, G to E, J to M and P2 to I will
addition the Town of Sawmills has applied for
construct lines to link I and E. Pump Station
L'ALDWELL COUNTY/US 321 CORRIDOR
201 WASTEWATER PLAN UPDATE
I1 Gravity Collection we=
existing Pump
Station
?VWTP
A'1
?_J
Force Main
Existing Gravity/ 0
Force Main
4,000
13,000
16,500
Gunpowder Ck.
Gunpowder Ck.
Gunpowder Ck.
Gunpowder Ck.
Gunpowder Ck.
Gunpowder Ck.
be constructed during years 11 to 20. In
Funding from CDBG which would
PH will be phased out after 10 years.
123
`.' .
\C___ .4" . ,__ :-5-.
gunpowder Creek WWTP - 2.0 MGD
• (Upgrade to 3.2 MGD)
• -±"----i-N6•4;74
1I MATCH WITH MAP F.
•
Cry

r
•
H
.1nti ,7-
w
MAP
•
Lri'. _.�
•' 1'�' ', ;•-.
DIAMETER
OF LINE
LF ON MAP C
TOTAL LF
WWTP
TREATING
FLOW
Line H to P5
12"
13,500
13,500
Gunpowder Ck.
Line E to P5
18"
4,500
12,500
Gunpowder Ck.
Line P to U
12" •
4,500
12,000
Granite Falls
Line P5 to GC
24" Force Main
3,800
13,000
Gunpowder Ck.
•
P
- p • r‘
rI
a
( 0
1
•
•
r
CALDWELL COUNTY/US 321 CORRIDO1
201 WASTEWATER PLAN UPDATE
Gravity Collection
Force Main
Pump Station
1"=2000'
40-
+a-
0
Line H to P5 will be constructed during years 1 1
to 20.
r It
« 1
I C2...
MATCH WITH MAP F /1 /i

.1
• _
•
•
• . OALli,WELL4.,CCi
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•
•
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MATCH WITH MAP A
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• • • •
• -
frir \ es20 it.97\
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•
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CALDWELL COUNTY/US 321 CORRIDOR )
mt 01 WASTEWATER PLAN UPDATE
Gravity Collection
I 1"=2'000'
161.
All lines on Map D will be constructed during
;wears 11 to 20.
-410-
'Baton
. • •
/ •
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DIAMETER OF
LINE
LF ON MAP D
TOTAL LF
WWII)
TREATING
FLOW
Line K to M
8"
1,000
4,000
Gunpowder Ck.
. Line M to P2
12"
3,000
9,500
Gunpowder Ck.
)--\\ ,r4;& _ • --
MAP
D
-'------'
_.,, ......."'.
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. ....:
•
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••_•• •••••••
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M
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'yBUWt&E
•
•
014
12
c ' z MATCH WITH MAP B
.[ 11]
CALDWELL COUNTY/US 321 CORRIDOR
201 WASTEWATER PLAN UPDATE
Lines K to M, J to M, M to P2, L to P3 and
P2 to I will be constructed in years 11 to 20.
8" Force Main
3,800
MAPE
3,800
• 1.
2
';;
1•r. i1.:
Granite Falls
1' \--.-f--�-Ill i
-'• ..

R
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4.1 CALDWELL COUNTY
US 321 CORRIDOR
201 WASTEWATER PLAN
UPDATE
Gravity Collection
Force Main
Pump Station
Existing Pump Station
.1 WWTP
1"=2,000'
Pal
t
•
PiJ
fr\
•
x
.
P
/10
1,fc MATCH .WITH MAP C
(Lk Croy
fram` /� \� / •. - - ��\', �� �,/.
•
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l 1 /�•, •-� is
Granite Falls WWTP - 0.9 MGD
Lu1Cs r io u, u to .FU, Q to P6, N to P4 and P6 to PG will be constructed during years 11
1 io20.
t
DIAMETER OF
LINE
LF ON MAP F
TOTAL LF
WWTP
TREATING
FLOW
Line R to T .
12"
4,200
6,200
Granite Falls
', Line T to U
12"
7,800
7,800
Granite Falls
Line S to T
8"
2,500
2,500
Granite Falls
Line P to U
•�
12
7,500
—
12,000
Granite Falls
_ Line U to PG
'
15"
3,000
3,000
Granite Falls
Line to P6
8"
3,200
6,200
Granite Falls J
Line N to P4 12"
4,000
4,000
Hickory
_
Line 0 to PO 12"
4,800
8,400
Hickory
Line P6 to PG _ 8" Force Main
6,600
8,600
Granite Falls
Line P4 to 0 6" Force Main
4,800
8,400
1 ----Z,-_—_____-_-1; ‘:">.
;
\-
i
'n4--_,-,'-----,,,,„.-d'
„,
MAP
F
. ,, .4rsv \ .z; �,,

CALDWELL COUNTY/US 321 CORRIDOR
201 WASTEWATER PLAN UPDATE
Gravity Collection
Force Main
Existing Pump Station
1"=2,000'
-+•-•
Lines Q to PG and P6 to PG will be constructed
during years 11 to 20.
Line 0 to PO
DIAMETER
OF LINE
Line Q to P6
Line P6 to PG
12"
8"
8" Force Main
....._ n A lair,-.yr.
LF ON MAP G
TOTAL LF
WWTP
TREATING
FLOW
_
3,600
8,400
Hickory
3,000
6,200
Granite Falls
2,000 _
8,600
Granite Falls
MAP G

Caldwell County/US 321 Corridor
201 Wastewater Planning Study
Drainage Basins
Sub Basins
Scale 1" : 7300'
1 .5 0 1 2 3 4
MILES
-4-
4.1\Aq<ILVI&CREED
ENGINEERS PLANNER'S SURVEYORS

IMP
MEI
fir
eall
Il
NC NATURAL HERITAGE PROGRAM COUNTY SPECIES LLST COVER SHEET
The county species list from the NC Natural Heritage Program is a Iisting of the elements (rare species, natural communities,
geologic features, and special animal habitats) known to occur in a county. The information on this printout is compiled from a
variety of sources, including field surveys, museums and herbaria, literature, and personal communications. The Heritage
Program's Biological and Conservation Database (BCD) is. dynamic, with new records being added and old records being revised
as new information is received. The BCD was developed and is being maintained using methodology developed by The Nature
Conservancy. The enclosed list cannot be considered a definitive record of natural heritage elements, and it should not be
considered a substitute for field surveys. When this information is used in any document, we request that the printout date be
given and that the NC Natural Heritage Program be credited.
This cover sheet explains the four columns of status codes that are given on the right-hand side of the county list printout.
STATE PROTECTION
CODE STATUS
E Endangered
T Threatened
SC Special Concern
C Candidate
CODE STATUS
P_ Proposed (E, T, or C)
SR Significantly Rare
EX Extirpated
WL Watch List
Plant statuses are determined by the Plant Conservation Program (NC Department of Agriculture) and the Natural Heritage
Program (NC Department of Environment, Health, and Natural Resources). E, T, and SC species are protected by state law
r+, (Plant Protection and Conservation Act, 1979)...0 and SR designations indicate rarity and the need for population monitoring and
conservation action. WL indicates a species not warranting active monitoring, but believed to of•conservation concern.
.... _ . ,.
Animal statuses that -.indicate state protection (E, T,-and SC) are published in Endangered Wildlife of North Carolina, March 16,
1992, Nongdme:and-Endangered••Wildlife Program (NC Department of Environment, Health, and Natural Resources). SR and
EX statuses are Natural Heritage Program designations. SR indicates rarity and the need for population monitoring and
conservation action. WL indicates a species not warranting active monitoring, but believed to of conservation concern.
FEDERAL PROTECTION
fat This status is designated by the US Fish and Wildlife Service. Federally listed Endangered and Threatened.species are protected
under the provisions of the Endangered Species Act of 1973, as amended through the 100th Congress. Unless otherwise noted,
definitions are taken from the Federal Register, Vol. 56, No. 225, November 21, 1991 (50 CFR Part 17).
DEFINITION
A taxon in danger of extinction throughout all of a significant portion of its range."
'' A taxon "likely to become an endangered species within the foreseeable future throughout all of a
significant portion of its range."
P A taxon proposed for official listing as endangered or threatened.
L A taxon officially listed as endangered or threatened.
C A taxon under consideration for which there is sufficient information to support listing. This category
was formerly designated as a Candidate 1 (C1) species.
Formerly defined as a taxon under consideration for which there is insufficient information to support
listing; formerly designated as a Candidate 2 (C2) species. Currently, the US Fish and Wildlife Service
does not recognize this designation.
In reference to the American alligator - this species is threatened due to similarity of appearance with
other rare crocodilians and is listed for trade purposes. The species is no longer biologically endangered
or threatened and is not subject to Section 7 consultation.
Please note that the US Fish and Wildlife Service no longer recognizes the following categories:
3A Candidate 3A A taxon formerly under consideration for listing, but for which there is "persuasive evidence of
extinction."
3B Candidate 3B A taxon formerly under consideration for listing, but which current taxonomic understanding does not
support as a distinct entity meeting the Endangered Species Act's definition of "species."
3C Candidate 3C A taxon formerly under consideration for listing, but which has been "proven to more abundant or
widespread than previously believed and/or [which is) not subject to any identifiable threat."
CODE STATUS
E Endangered
T Threatened
Proposed
Listed
Candidate
FSC Federal
Species of
Concern
T(S/A) -
1

ScIENT IF1C AND STATE FED. STATE GLOBAL
COMMON NAME PROT. PROT. RANK RANK
014 • Caldwell
Vertebrates
*COCCYZUS ERYTHROPTHALMUS SR. - S2B,SZNG5
BLACK -BILLED CUCKOO
*CYPRINELLA ZANEMA POP 1 SR - S3 G3T3
SANTEE CHUB - PIEDMONT POPULATION
*NEOTOMA MAGISTER SC 'FSC S1S2 G3G4
ALLEGHENY WOODRAT
Invertebrates
*MACROMIA MARGARITA
SR FSC S1S2 G2G3
MARGARET'S RIVER CRUISER
9161 MICROHEXURA MONTIVAGA SR LE Si GI
SPRUCE -FIR MOSS SPIDER
OPHIOGOMPHUS EDMUNDO SR FSC* Si? G1
EDMUND'S SNAKETAIL
SPEYERIA DIANA' SR FSC S3 G3
DIANA FRITILLARY
'�' VascuIar plants
*ACONITUM RECLINATUM SR S3 G3G4
TRAILING WOLFSBANE
mil CARDAMINE CLEMATITIS C FSC S2? G2
MOUNTAIN BITTERCRESS
EPILOBIUM ANGUSTIFOLIUM SR - S1 G5
PURPLE WILLOWHERB
mi
GEUM GENICULATUM T FSC S2 G2
BENT AVENS
LIATRIS HELLERI T-SC LT S1 • G1
'o' HELLER'S BLAZING STAR
LILIUM GRAYI T SC FSC S3 - G3
GRAY'S LILY •
ml *MONOTROPSIS ODORATA C FSC S2 G3
SWEET PINESAP
PANAX TRIFOLIUS SR - S2 G5
DWARF GINSENG
MI
*PLATANTHERA PERAMOENA C - S1 G5
PURPLE FRINGELESS ORCHID
QUERCUS PRINOIDES C - SH G5
FM DWARF CHINQUAPIN OAK
*RHODODENDRON VASEYI SR S3 G3
PINK -SHELL AZALEA
ma, *TOFIELDIA GLUTINOSA C - SI G5
STICKY BOG ASPHODEL
*TRICHOPHORUM CESPITOSUM C S2 G5
DEERHAIR BULRUSH
Pm
*VERBENA RIPARIA C FSC* SH GH
RIVERBANK VERVAIN
n•i
NC NATURAL HERITAGE PROGRAM, NC DIVISION OF PARKS AND RECREATION, DERNR
Data complied using BCD software developed by The Nature Conservancy.
JULY 1996

SCIENTIFIC AND
COMMON NAME
MEI
STATE FED. STATE GLOBAL
PROT. PROT. RANK RANK
NonvascuIar plants
BAZZANIA NUDICAULIS C FSC S2 G2G3
A LIVERWORT
A`' *BRACHYTHECIUM POPULEUM
SR - SH GS
MATTED FEATHER MOSS
.ENTODON SULLIVANTII SR S2 G3G4
SULLIVANT'S ENTODON
PLAGIOCHILA SULLIVANTII VAR SULLIVANTII C FSC S2 G2T2
A LIVERWORT
rim RHY'TIDIUM RUGOSUM SR - S2 G5
GOLDEN TUNDRA -MOSS t
Natural communities
elm ACIDIC COVE FOREST
FRASER FIR FOREST
HIGH ELEVATION RED OAK FOREST
ri, MONTANE ALLUVIAL FOREST
MONTANE OAK —HICKORY FOREST
rw' RED SPRUCE-=FRASER FIR FOREST •
" - S2 G2
S5 G5
" - Si GI
S5 GS
Si G2?
S5 G5
NC NATURAL HERITAGE PROGRAM, NC DIVISION OF PARKS AND RECREATION, DEHNR JULY 1996
Data compiled using BCD software developed by The Nature Conservancy.

,PC0G
•
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736 Fourth Street, SW, Hickory NC 28602
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Reggie Sutton
FROM: Sam Erwin
January 12, 1998
TELE: [phone]
FAX: [phone]
SUBJECT: Caldwell County 201 Plan - Description of site for Gunpowder WWTP
upgrade (2.0 MGD to 3.2 MGD)
In addition to the linework, the Gunpowder Creek WWTP will be upgraded from
2.0 MGD to 3.2 MGD. The existing plant is located on a 10 acre site of which 5 acres
are in a floodplain. The remaining 5 acres are developed as the present Gunpowder
Creek WWTP. This land is owned by the City of Lenoir. A small portion of the
proposed 1.2 MGD upgrade would occur on this previously developed land. In
addition, 4 to 5 acreswould need to be purchased adjacent to the present plant for the
upgrade. This land is on the north side of Gunpowder Creek and is a mixture of low
lying floodplain and wooded areas. None of the proposed construction will occur in
these low lying 100 year floodplain areas. Moving up in elevation, the terrain becomes
wooded with a mixture of mostly small scrub pines and small hardwoods. It appears that
the wooded areas have been previously timbered. The exact locations of the upgrade
have not been determined at this time. During the Environmental Assessment
conducted by McGill &' Associates for the recent upgrade from 1.0 MGD to 2.0 MGD,
no adverse environmental factors were found with the existing site. Also, in preliminary
discussions with the State Historic Preservation Office, project maps were shown and
there were no areas adjacent to the present Gunpowder Creek WWTP that showed
archeological or historical significance.
The Western Piedmont Council o1 Govrtmment° does not discnmtnale o11 the ba .i; Of race. t:u1m%
notlDnat 044244 sax• recision. age Or diaabatty to ampleyntonl cx lhn pravlitt0n Of berviCos.
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Western Piedmont Council of Governments
736 Fourth Street, SW, Hickory NC 28602
January 12, 1998
X MORAI UM:
TO: Reggie Sutton
PROM: Sam Erwin
SUBJECT: Caldwell County 201 Plan response to comments from the Division of Air
Quality
TELE: [phone]
FAX: [phone]
There are no particulate sources such as lime silos or boilers planned for project.
At this point, there are no emergency generator planned or any other devices that would
require permits from the Division of Air Quality. As specific projects develop from the
plan, if emergency generators are required or other devices that call for air quality
permits then they will be obtained.
The Weatetn Piedmont Council of Governmonla duos not dfscrtminete on the basis of race. color,
malarial or1 *n. oea. religion. son or dlgabiEity fU vrnployment nr the provision of servo:es.

1
United States Department of the Interi
FISH AND WILDLIFE SERVICE
Asheville Field Office
160 Zillicoa Street
Asheville, North Carolina 28801
July 31, 1997
FPNI Mr. Reginald R. Sutton
Division of Water Quality
Construction Grants & Loans Section
.., North Carolina Department of Environment, Health,
and Natural Resources
P.O. Box 29579
Raleigh, North Carolina 27626-0579
MEI
Dear Mr. Sutton:
AUG 1 1997
CONSTRUCTION ANTS &
LOAN SECTION
Subject: Environmental assessment for the Caldwell County/US 321 Corridor 201 Wastewater
Plan Update, Caldwell County, North Carolina
We received a copy of the subject document on June 30, 1997. The following comments are
,., provided in accordance with the provisions of the Fish and Wildlife Coordination Act, as
amended (16 U.S.C. 661-667e), and Section 7 of the Endangered Species Act of 1973, as
amended (16 U.S.C. 1531-1543) (Act).
According to the environmental assessment, this project will involve an increase in wastewater
treatment capacity of 1.2 million gallons per day (MGD) at Lenoir's Gunpowder Creek
P•► Wastewater Treatment Plant. The improvements will occur in two 10-year phases, based on
projected demand. Phase 1 construction will include the installation of 71,970 linear feet of
gravity sewer, 24,300 linear feet of force main, and four pump stations. Phase 2 construction
rol will include 21,000 linear feet of gravity line in the Hudson area, 17,500 linear feet of gravity
line and 16,500 linear feet of force main, and a pump station near Sawmills. Phase 2 will also
include 6,000 linear feet of sewer line near Granite Falls. Another 6,200 linear feet of gravity
1.' line and 8,600 linear feet of force main will be constructed east of Granite Falls.
MaiRegarding the proposed improvements, the Service has no objection to the construction of the
facilities. As noted in the environmental assessment, the indirect impacts of development in the
expanded service area, although somewhat unpredictable, will certainly result in increased
impervious surface and the loss, as well as fragmentation, of terrestrial habitats and wetlands.
The Service urges detailed planning and zoning in order to minimize these indirect effects. Open
ORIGINAL

space and riparian buffer areas should be emphasized in such planning efforts. Since the
proposal includes considerable construction of new gravity sewer line, the Service recommends
avoidance of jurisdictional wetlands.
Based on the information provided in the environmental assessment, as well as a review of our
records, we agree that the project will have no effect on federally listed species. In view of this,
the Service believes the requirements under Section 7(c) of the Act are fulfilled. However,
m`' obligations under Section 7 of the Act must be reconsidered if: (1) new information reveals
impacts of this identified action that may affect listed species or critical habitat in a manner not
previously considered, (2) this action is subsequently modified in a manner that was not
considered in this review, or (3) a new species is listed or critical habitat is determined that may
be affected by the identified action.
Please do not hesitate to contact Mr. Mark A. Cantrell of our staff at 704/258-3939, Ext. 227, if
you have any questions regarding our comments. We have assigned our Log No. 4-2-97-168 to
•,, this project. Please refer to this number in all future correspondence directed to us concerning
this matter.
Fri Sincerely,
Brian P. Cole
State Supervisor
cc:
Mr. Bob Johnson, U.S. Army Corps of Engineers, Regulatory Field Office, 151 Patton Avenue,
Room 143, Asheville, NC 28801-5006
Purl
fal

ruLI 1L. wdTrt _,laf!I1::, r.,.•.:'_±i=±
l.C•
State of North Carolina
Department of Environment,
Health and Natural Resources
Asheville Regional Office
James B, Hunt, Jr., Governor
Jonathan B. Howes, Secretary
MEMORANDUM
TO: Faith Abbott
Environmental Engineer
NC Public Water Supply Section
FROM: I-tarold Saylor AD\tk
Regional Engineer
NC Public Water Supply Section- AHO
James P Adams
Assistant Regional ngineer
NC Public Water Supply Section- AHO
SUBJECT: EA Caldwell County / US 321. Corridor
201 Wastewater Plan Update
Project Number 854
DATE: July 28, 1997
DEEI-1MF
Our office has reviewed the referenced project and have the following comments:
• Pump station Pa at US 321 (also P4 in AILS & 6) is located in close proximity of the drinking
water intakes for the City of Hickory and Town of Long View. Pump stations P2 and P3 are
located just upstream of the drinking water intakes for the City of Lenoir and Town of Granite
Falls, respectfully. Necessary equipment (dual operations, emergency power, alarms, etc.) and
proximity of the pump stations will need to be considered in the project design to insure proper
protection of down stream users. Accidental spills and pump/power failures are primary items
of our concern.
Most serious public health problems occur during the mentioned emergency situations. The City
of Hickory intake location is very vulnerable to an accidental spill with little to no notice.
• We support the concept of a regional sewer system in the proposed areas. The elimination ,
failing or marginally operating ground absorption and discharging sewage systems along the
courses of the county would benefit the quality of the water supplies (groundwater and St...
water).
If you should have any other questions, please call on us.
c: Wayne Munden
E.D. Herndon
G:IDATAIWPDATAIPWSUAI14\EACALD.797
Grace Plaza, 852 Merrimon Ave.
Asheville, North Carolina 28804
Voice 704.251-6788
FAX [phone]
An Equal Opportunity/Affirmative Action Employer
50% recycled! l o% post -consumer paper

DIVISION OF WATER QUALITY
July 11, 1997
MEMORANDUM
TO: Michelle Suverkrubbe
THRU: Ruth SwanekQ(S_
Carla Sanderso
FROM: Jacquelyn M. Nowell 41/4N
SUBJECT: Comments on Caldwell County/US 321 Corridor 201 Wastewater Facilities
Planning Study and Environmental Assessment
The Instream Assessment Unit has reviewed the subject documents and have no
significant comments. The 201 plan includes correspondence from the Division where
speculative limits for the future expansions of the City of Lenoir's Lower Creek and
Gunpowder Creek WWTPs, the Granite Falls WWTP and a proposed Regional plant have
been addressed. The plan includes improvements to the existing wastewater treatment
facilities in order to comply with the more stringent limits.
It should be noted that Table 5.2.1 Speculative Effluent Limits on page 21 of the
201 planning document appears to contain some typographical errors regarding flows and
limits for Granite Falls and the proposed Regional Plant The summer and winter flows for
Granite Falls should be 1.9 MGD instead of 1.8 MGD. The summer NH3-N limit for
Granite Falls should be 2.9 mg/1 instead of 2.0 mg/l. The summer and winter flows for the
proposed Regional Plant should probably be 3 - 6 MGD, rather than the 3.6 MGD that is
listed.
cc: Rex Gleason
Central Files
WLA File

CALDWELL COUNTY 201 FACILITIES PLAN
RESPONSE TO DEHNR EA COMMENTS ON DRAFT
(1) In response to the concern for a discussion on soil limitations for septic tank drainfields,
the following was incorporated into the EA in the second paragraph under the section "II
Existing Environment/Topography and Soils."
"According to the Caldwell County Soil Survey, the soil limitations for septic tank
absorption fields would be moderate to severe. In particular, Cecil-Pacolet-Rion which is the
predominent association has moderate to severe conditions which are unfavorable to septic tank
drainfields. These soils perc slowly and are on slopes. The Cecil-Pacolet-Appling soils have
moderate to severe limitations for septic drainfields. These soils perc slowy. At the extreme
northern portion of the project area, the Chewalcia-Masada-Congaree soils have severe
limitations for septic drainfields. These are due to wetness and slope."
(2) In response for additional information in the section "Surface Waters". A map has been
included in the revised EA which shows drainage basins and streams in the project area. Data on
7Q10 and 30Q2 has been included in the fourth, fifth and sixth paragraphs under the section "II
Existing Environment/Surface Water."
The following are the 7Q10 and 30Q2 rates for Gunpowder Creek. The 7Q10 rates for
Granite Falls WWTP located on Gunpowder Creek are 9.3 cubic feet per second in the summer
and 12 cubic feet per second in the winter. The 30Q2 rate for the Gunpowder Creek at the
Granite Falls WWTP is 17 cubic feet per second.
The 7Q10 rates for the Gunpowder WWTP located on Gunpowder Creek is 3 cubic feet
per second in the summer and 4.3 cubic feet per second in the winter. The 30Q2 rate for the
Gunpowder WWTP is 5.8 cubic feet per second. These are the only discharges located on the
Gunpowder Creek basin. Over the last several years discharges have been consolidated to the
remaining two which are Gunpowder Creek WWTP owned by the City of Lenoir and Granite
Falls WWTP.
The 7Q10 rate for the Lower Creek WWTP is 0.3 cubic feet per second in the summer
and 14.4 cubic feet per second in the winter. The 30Q2 rate for the Lower Creek WWTP is 24.4
cubic feet per second. There are four NPDES permits located on Lower Creek. Over the last
several years, many smaller discharges have consolidated into the remaining dischargers.
There are several small dischargers that discharge into small streams that flow directly into
Lakes Hickory and Rhodhiss. The proposed project will improve water quality by consolidating
these smaller dischargers into Gunpowder Creek WWTP and Lower Creek WWTP."

(3) In response for information regarding the source of potable water for the various local
governments involved in the project, the following was incorporated in the EA in the seventh
paragraph under the section "II Existing Enviroment/Surface Water."
"The source of potable water for Granite Falls, Hudson, Sawmills, Caldwell County,
Cajahs Mountain and Lenoir is Lake Rhodhiss. The above local governments are served by two
water treatment plants located on lake. These are the Granite Falls and Lenoir plants. The City
of Hickory is served by its water treatment plant located on Lake Hickory."
(4) In response for more information on Indirect and cumulative effects of the project, the
following was incorporated into the EA in the first and second paragraphs under the section "V
Environmental Consequences/Indirect Impacts."
Increased sediment to streams could be minimized if the Sedimentation and Pollution
Control Act of 1973 is followed. If areas greater than 1 acre are to be disturbed then Erosion
Plans will need to be submitted and the Act followed. Additional ways to minimize sediment are
to construct sewer lines as far away from streams as possible and minimize the amount of land
being disturbed at one time. Staging areas for contractors should be minimized to prevent
sedimentation.
There are several cumulative impacts of the project. There will be sedimentation to the
streams. However, this will be a short-term impact. With construction of sewerlines, faulty
septic tanks will be eliminated. Thus, fecal coliform levels will drop and water quality improve. If
growth follows the contruction of sewerlines, there could be an increase in storm water runoff
However, the overall water quality of the stream should improve in the long run.
(5) In response to comments from the NC Wildlife Resources, the following additional
mitigating measures were incorporated into the EA. These additional measures are listed under
the section "VI Mitigative Measures" and are as follows:
1. When specific sewerline routes are determined, the US Army Corps of Engineers will be
contacted to determine whether a 404 permit will be needed.
2. Where creek crossings are necessary, sewerlines should cross streams at right angles to
minimize impacts to riparian areas.
3. Stringent erosion control measures will be implemented where soil is disturbed and
maintained until project completion.
4. Temporary or permanent herbaceous vegetation should be planted on all bare soil within
15 days of ground disturbing activities to provide long-term erosion control.
2

In response to concerns from the Asheville Regional Office DEHNR over accidental spills
threatening Hickory's water intake, the following response was included in the revised EA in the
last paragraph under the section "Il Existing Environment/Surface Water."
"The City of Hickory has contingency plans in case of an accidental spill which would
threaten the water intake at Lake Hickory. Over the last several years, the City has lowered there
intake to 25 feet below the surface of the lake. Therefore, most of the potential contaminants
would not reach it.
In response to the Instream Assessment Unit comments, the typographical errors in Table
5.2.1 have been corrected to reflect the correct information.
In response to comments from the US Fish and Wildlife, all of the proposed areas are
under jurisdictional zoning from one of the seven participating local governments. Also, in the
EA under the section "VI Mitigative Measures" additional measures to protect fish and wildlife,
the following addresses federally listed endangered species:
"10. If the scope of the project changes, a new species is listed or new information
reveals impacts of the identified action may affect listed species or critical habitat in a manner not
previously considered, then the project will seek review from US Fish and Wildlife to determine if
federally listed species will be affected."
In response to comments from Department of Cultural Resources, the following was
incorporated into the EA under the section "V Environmental Consequences/Areas of
Archeological or Historical Value."
"Scoping comments from SHPO recommended Archeological Surveys for all lines that
would be constructed along creeks or non right-of-way areas. Since specific line placements are
not available at the present time, the recommendations will be followed as specific projects
develop from the 20 year plan."
Also, the following has been incorporated into the next to last paragraph in the EA under
the section VI Mitigative Measures."
"As specific projects develop from the 201 plan that have exact sewer alignments, these
projects will be reviewed by the Department of Cultural Resources to determine if an
Archeological Survey is needed."
3

s
Mel
Division of Air Quality
July 10, 1997
MEMORANDUM
TO: Melba McGee, Office of Legislative and Intergovernmental Affairs
. .1 v
FROM: Alan Klimek, Director >--)7
SUBJECT: Project No. 854
Environmental Assessment
Caldwell County/US 321 Corridor 201 Wastewater Plan Update
min
Caldwell County
The Division of Air Quality has reviewed the proposed project which updates the 201
wastewater plan for Caldwell County. The project includes upgrades to existing wastewater
treatment plants, construction of gravity sewers, force main and pump stations. If any
1.1 modifications include installation of particulate sources such as a lime silo, or boilers, or
emergency generators, an air permit may be required.
In addition, the contractors should take care to comply with open burning provisions
during any land clearing. Adequate wetting, reseeding and covering of disturbed areas should be
utilized during earth moving operations to mitigate any adverse impact from fugitive dust
emissions.
Should you require further information in this regard, please advise.
c: Holly Groce
caldwell.spp

4
North Carolina Department of Cultural Resources
James B. Hunt Jr, Govemor
Betty Ray McCain, Secretary
July 23, 1997
MEMORANDUM
TO:
FROM:
SUBJECT:
Reginald R. Sutton
Construction Grants and Loans Section
Division of Water Quality
DEHNR
David Brook
Deputy State Historic Preservation Officer
Caldwell County/US 321 Corridor 201 Wastewater
Plan Update, ER 97-9479
Division of Archives and History
Jeffrey J. Crow, Director
Thank you for providing us the opportunity to review the above project.
There are several archaeological sites recorded adjacent to proposed project
boundaries, but there are no known recorded archaeological sites within the project
boundaries. However, the project area has never been systematically surveyed to
determine the location or significance of archaeological resources.
We recommend that a comprehensive survey be conducted by an experienced
°.`' archaeologist to identify the presence and significance of archaeological remains
that may be damaged or destroyed by the proposed project. Potential effects on
unknown resources should be assessed prior to the initiation of construction
activities. The survey should be conducted in those portions of the project that are
adjacent to streams or outside of existing highway rights -of -way.
Enclosed is a list of archaeological consultants who have conducted -or expressed
an interest in conducting contract work in North Carolina. Individual files providing
additional information on the consultants may be examined at the State Historic
Preservation Office's Office of State Archaeology, 421 North Blount Street,
Raleigh. If additional names are desired, you may consult the current listing of the
members of the Society of Professional Archaeologists, or contact the society's
current treasurer, Heather McKillop, Department of Geography & Anthropology,
Louisiana State University, Baton Rouge, Louisiana 70803-4105, telephone
504/388-6172, FAX [phone]. Any of the above persons, or any other
experienced archaeologist, may be contacted to conduct the recommended
investigation.
POI
We have conducted a search of our files and are aware of no structures of
.historical or architectural importance located within the planning area.
109 East Jones Street • Raleieh. North Carolina 27601-2R07

The above comments are made pursuant to Section 106 of the National Historic
,.� Preservation Act and the Advisory Council on Historic Preservation's Regulations
for Compliance with Section 106 codified at 36 CFR Part 800.
Thank you for your cooperation and consideration. If you have questions
45,
concerning the above comment, please contact Renee Gledhill -Earley, environmental
review coordinator, at 919/733-4763.
DB:slw
Enclosures
Mel
rag
faIR
non

Ina
dal
Pal
VAI
North Carolina Wildlife Resources Commission
312 N. Salisbury Street, Raleigh, North Carolina 27604-1188, 919-733-3391
Charles R. Fullwood, Executive Director
MEMORANDUM
TO: Melba McGee, Legislative and Intergovernmental Affairs
Dept. of Environment, Health, and Natural Resources
FROM:
Habitat Conservation Program
DATE: July 2, 1997
Stephanie E. Goudreau, Eastern Mt. Region Coordinator
SUBJECT: DEHNR Project No. 854, Environmental Assessment for Caldwell CountyfUS
321 Corridor 201 Wastewater Plan Update, Caldwell County
This correspondence responds to a request by you for our review and comments regarding
the Environmental Assessment (EA) for the Caldwell County/US 321 Corridor 201 Wastewater
Plan Update. These comments are provided in accordance with the provisions of the Fish and
Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d.) and the North
Carolina Environmental Policy Act (G.S. 113A-1 through 113A-10; 1 NCAC 25).
Project sponsors indicate that Caldwell County is experiencing tremendous growth in the
southern portion of the county along the US 321 corridor. The purpose of the EA is to determine
the most feasible way to treat wastewater in this area. The alternative preferred by project
.. sponsors requires expanding the capacity of the City of Lenoir's Gunpowder Creek wastewater
treatment plant (WWTP) from 2.0 million gallons per day (mgd) to 3.2 mgd. The Lower Creek
and Granite Falls WWTPs would not be upgraded, but would be utilized to their maximum
capacities. Flow from Cajah's Mountain, Sawmills, and Hudson would be pumped to the
Gunpowder WWTP. The 900,000 gallons per day produced by the smaller basins along Lake
Rhodhiss would be pumped to Hickory's system. Phase I of construction includes 71,970 linear
feet Of) of gravity sewer, 24,300 if of force main, 4 pump stations, and upgrade of the
Gunpowder Creek WWTP. Phase II of construction includes two additional pump stations,
59,200 If of gravity sewer, and 25,100 if of force main.
Phase I will impact 2.06 acres of wetlands. 25.20 acres of forested land, and 6.29 acres of
farmland, while Phase II will impact 0.3 acre of wetlands, 17.36 acres of forested land, and 4.82

01.11
fug
Project No. 854
Page 2 July 2, 1997
acres of farmland. Project sponsors propose the following measures for minimizing adverse
impacts to fisheries and wildlife resources:
1) Where stream crossings are necessary, sewer lines will be buried in the stream bottom.
2) An undisturbed buffer zone of at least 50 feet will be left where possible to control
sedimentation into streams and provide a travel corridor for wildlife.
3) If riparian areas are disturbed, they will be revegetated with native species as soon as
possible to minimize runoff.
4) The use of heavy equipment in live streams will be avoided to the extent possible.
5) Pesticide, herbicide, and fertilizer use will be limited within 100 feet of streams.
fon In general, we concur with the findings of the EA and would concur with a Finding of No
Significant Impact. We have the following additional comments:
1) Project sponsors note that they will likely need a 404 permit for sewer lines crossing
wetlands and streams. Contact is Mr. Steve Chapin at 704/271-4014.
`I' 2) Where crossings are necessary, sewer lines should cross streams at right angles to
minimize impacts to riparian areas.
AMA
3) Stringent erosion control measures should be implemented where soil is disturbed and
maintained until project completion.
4) Temporary or permanent herbaceous vegetation should be planted on all bare soil within
15 days of ground disturbing activities to provide long-term erosion control. We prefer a
"seed as you go" strategy rather than allowing a large area to remain bare.
Thank you for the opportunity to review and comment on this project. If you have any
questions regarding these comments, please contact me at 704/652-4257.

r Li) 1 ' ,.,...
State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Parks & Recreation
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
Dr. Philip K. McKnelly, Director
February 4, 1997
Mr. Sam Erwin
Western Piedmont Council of Governments
317 1st Avenue NW
Hickory, North Carolina 28601
ATA
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r
SUBJECT: GIS Identification Numbers for the Proposed Upgrade of Gunpowder Creek
WWTP Project, Caldwell County, North Carolina
Dear Mr Erwin:
The North Carolina Natural Heritage Program has rare species records corresponding to the GIS
identification numbers that you sent relating to the proposed upgrade of Gunpowder Creek WWTP
project in Caldwell County. The rare species represented by the identification numbers are as follows:
GIS ID
Scientific Name
Common Name
NC Status
Federal Status
0212102
Hexastylis naniflora
dwarf -flowered heartleaf
Endangered, Proposed
Threatened
Threatened
0312489
Saxifraga caroliniana
Carolina saxifrage
Candidate
Species of Concern*
0032364
Quercus prinoides
dwarf chinquapin oak
Candidate
0162809
Monotropsis odorata
sweet pinesap
Candidate
Species of Concern*
0032967
Tofieldia glutinosa,
a.k.a. T. racemosa
var. glutinosa
sticky bog asphodel
Candidate
rmer Federal C2 Candidate Species
To our knowledge, this project area has not been systematically inventoried and we cannot
definitively state that rare species or significant natural areas do not occur there.
Enclosed is a list of rare species that are known to occur in Caldwell County. If suitable habitat for
any of these species occurs in the project area, then those species may be present at the project site.
If it is necessary to be certain that this site does not contain rare species, a field survey would need
to be conducted.
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone] FAX [phone]

nIM -
s,
Mr. Sam Erwin
February 4, 1997
�► Page 2
Contact me at the address below or call me at [phone] if you have any questions or need
further information.
Sincerely,
ilvtAdIA (1-1,0(
Amalie Couvillion
Protection Specialist
Natural Heritage Program
/ACC
Enclosures
Fml