SW6210203_Hoke Aquatic Storm Sub Package 2-11-21_20210215

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December 18, 2020
Ms.Letitia Edens
Hoke County
101 North Main Street
Raeford, North Carolina 28376
Reference:Report of SeasonalHigh Water Table Estimation and Infiltration Testing
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, North Carolina
ECS Project No. 49.12100
Dear Ms.Edens:
ECS Southeast, LLP (ECS) recently conducted additionalseasonalhigh water table (SHWT)
estimation and infiltration testing withinthe proposed stormwater control measure(SCM) area(s)
off of US Highway 401in Raeford,HokeCounty, North Carolina. This letter, with attachments,
is the report of our testing.
Field Testing
On December 17,2020, ECS conducted an exploration of the subsurface soil conditions, in
accordance with the NCDEQ Stormwater Design Manual section A-2,at eightrequested
locations shown on the attached BoringLocation Plan (Figure 1). ECS used GPS equipment in
order to determine the boring locations.The purpose of this exploration was to obtain
subsurface information of the in situsoils for the SCM area(s). ECS explored the subsurface
soil and groundwater conditions by advancing one hand auger boring into the existing ground
surface at each ofthe requested boring locations. ECS visually classified the subsurface soils
and obtained representative samples of each soil type encountered. ECS also recorded the
SHWT elevation observed at the time of the hand auger borings. The attached Infiltration
Testing Form provides a summary of the subsurface conditions encountered at the hand auger
boring locations.
The SHWT elevation was estimated at the boring locations below the existing grade elevation.
A summary of the findings are as follows:
LocationSHWT
I-142inches
I-242inches
I-355inches
I-452 inches
I-566 inches
I-640 inches
I-750 inches
I-855 inches

Report of SHWT Estimation and Infiltration Testing
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, North Carolina
ECS Project No. 49.12100
December 18, 2020
ECS has conducted fourinfiltration tests utilizing a compact constant head permeameter near
the hand auger borings in order to estimate the infiltration rate for the subsurface soils.
Infiltration tests are typically conducted at two feet above the SHWT or in the most restrictive
soil horizonobserved. Tests in clayey conditions are conducted for durations of up to 30
minutes. If a more precise hydraulic conductivity value is desired for these locations, then ECS
recommends collecting samples and performing laboratory permeability testing.
Field Test Results
Below is a summary of the infiltration test results:
LocationDescriptionDepthInches/
hour
I-1Tan/orange sandy CLAY30inches<0.001
I-2Tan/orange sandy CLAY30inches<0.001
I-3Tan/orange sandy CLAY31inches0.008
I-4Tan/orange clayey SAND50 inches0.006
I-5Orange/tan clayey SAND42 inches0.013
I-6Orange/tan clayey SAND36 inches0.020
I-7Tan/orange/gray clayey SAND36inches0.015
I-8Orange/tan sandy CLAY24 inches0.009
Infiltration rates and SHWT may vary within the proposed site due to changes in elevation, soil
classificationand subsurface conditions.ECS recommends that a licensed surveyor provide
the elevations of the boring locations.
Closure
ECS’s analysis of the site has been based on our understanding of the site, the project
information provided to us, and the data obtained during our exploration. If the project
information provided to us is changed, please contact us so that our recommendations can be
reviewed and appropriate revisions provided, if necessary. The discovery of any site or
subsurface conditions during construction which deviate from the data outlined in this
exploration should be reported to us for our review, analysis and revision of our
recommendations, if necessary. The assessment of site environmental conditions for the
presence of pollutants in the soil and groundwater of the site is beyond the scope of this
geotechnical exploration.
2

Report of SHWT Estimation and Infiltration Testing
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, North Carolina
ECS Project No. 49.12100
December 18, 2020
ECS appreciates the opportunity to provide our services to you on this project. If you have any
questions concerning this report or this project, please contact us.
Respectfully,
ECS SOUTHEAST, LLP
K. Brooks Wall W. Brandon Fulton, PSC, PWS, LSS
Project Manager Environmental Department Manager
[e-mail]
[e-mail]
910-686-9114 704-525-5152
Attachments:Figure 1 -BoringLocation Plan
Infiltration Testing Form
GBADocument
3

I-4
NN
APPROXIMATE BORING LOCATIONS
WWEE
SCALE SHOWN ABOVE
SS
Hoke Co. Aquatic and Rec Center
Figure 1–Boring Location Plan
Raeford, Hoke County,
North Carolina
Provided by:Google Earth
ECS Project # 49.12100
December 17, 2020
KBW

Infiltration Testing Form
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, NorthCarolina
ECS Project No. 49.12100
December 17, 2020
Location DepthUSCSSoil Description
I-10-24”SMTan/orange fineSANDw/ clay
24”-48”CLTan/orangesandy CLAY
Seasonal High Water Tablewas estimated to be at 42inches below the
existing grade elevation.
Test was conducted at 30inches below existing grade elevation
Infiltration Rate:<0.001inches per hour
Location DepthUSCSSoil Description
I-20-24”SMTan/orange fineSANDw/ clay
24”-48”CL Tan/orangesandy CLAY
Seasonal High Water Tablewas estimated to beat 42inches below the
existing grade elevation.
Test was conducted at 30inches below existing grade elevation
Infiltration Rate:<0.001inches per hour
Location DepthUSCSSoil Description
I-30-45”SMRed/orange/tan fineSANDw/clay
45”-55”CL Tan/orange sandy CLAY
55”-70”SCTan/orange/gray clayey SAND
Seasonal High Water Tablewas estimated to be at 55inches below the
existing grade elevation.
Test was conducted at 31inches below existing grade elevation
Infiltration Rate:0.008inches per hour

Infiltration Testing Form
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, NorthCarolina
ECS Project No. 49.12100
December 17, 2020
Location DepthUSCSSoil Description
I-40-62”SC Tan/orange clayey SAND
Seasonal High Water Tablewas estimated to be at52inches below the
existing grade elevation.
Test was conducted at 50inches belowexisting grade elevation
Infiltration Rate:0.006inches per hour
Location DepthUSCSSoil Description
I-50-15”SPTan/orangefineSAND
15”-50”CL Tan/orange sandy CLAY
50”-66”SCTan/orange/gray clayey SAND
Seasonal High WaterTablewas estimated to be at 66inches below the
existing grade elevation.
Test was conducted at 42inches below existing grade elevation
Infiltration Rate:0.013inches per hour
Location DepthUSCSSoil Description
I-60-18”SPTan /orangefineSAND
18”-36”CL Tan/orange sandy CLAY
36”-50”SCTan/orange/gray clayey SAND
Seasonal High Water Tablewas estimated to be at 40inches below the
existing grade elevation.
Test was conducted at 36inches below existing grade elevation
Infiltration Rate:0.020inches per hour

Infiltration Testing Form
Hoke Co. Aquatic and Rec Center
Raeford,HokeCounty, NorthCarolina
ECS Project No. 49.12100
December 17, 2020
Location DepthUSCSSoil Description
I-70-12”SMBrown/orangefineSANDw/clay
12”-36”CL Orange/tansandy CLAY
36”-60”SCTan/orange/gray clayey SAND
Seasonal High Water Tablewasestimated to be at 50inches below the
existing grade elevation.
Test was conducted at 36inches below existing grade elevation
Infiltration Rate:0.015inches per hour
Location DepthUSCSSoil Description
I-80-14”SMBrown/orangefineSANDw/clay
14”-32”CL Orange/tansandy CLAY
32”-60”SCTan/orange/gray clayey SAND
Seasonal High Water Tablewas estimated to be at 55inches below the
existing grade elevation.
Test was conducted at 24inches below existing grade elevation
Infiltration Rate:0.009inches per hour

HAL OWEN & ASSOCIATES, INC.
SOIL & ENVIRONMENTAL SCIENTISTS
P.O. Box 400, Lillington NC 27546-0400
Phone [phone] / Fax [phone]
www.halowensoil.com

23 May 2019

Mr. Leland Strother
Strother Land Surveying
120 East Elwood Avenue
Raeiford, NC 28376

Reference: Wetland Investigation
McNeill Property 30 Acres
Hoke County, North Carolina

Dear Mr. Strother,

A site investigation has been conducted for the above referenced property, which is
located on the northwest side of US Hwy 401, McLauchlin Township, Hoke County, North
Carolina (Figure 1.). The purpose of this investigation was to determine the existence and extent
of areas that exhibit the characteristics of jurisdictional wetlands under Section 404 of the Clean
Water Act (CWA). All wetland determinations were made in accordance with the Atlantic and
Gulf Coastal Plain Regional Supplement to the 1987 Corps of Engineers Wetlands Delineation
Manual. This report represents my professional opinion but does not represent the exact wetland
boundaries or concurrence by the US Army Corps of Engineers (USACE).

M ETHODOLOGY

This evaluation included a site investigation and review of public records for the subject
property and its immediate vicinity. The records review included aerial photographs, the Flood
Risk Information System (FRIS), the Natural Resources Conservation Service (NRCS) soil
survey, the National Wetlands Inventory (NWI), United States Geological Survey (USGS)
topographic maps, and GIS data.

The site investigation was accomplished by direct examination of the physical attributes
of the site and soil auger borings taken at various points across the site. The project boundaries
were walked and several traverses were conducted across the interior of the site.

S ITE D ESCRIPTION

The project area (Figure 2) is located within the Coastal Plain physiographic region of
North Carolina. The USGS topographic map, Nicholson Creek Quadrangle (Figure 3), shows
the site drains west toward Beaver Creek, which is in the Lower Cape Fear Watershed (USGS
HUC8 03030004). The site is gently rolling with an average elevation of approximately 225 feet
above mean sea level. Center coordinates for site are 35.012778, -79.163432.

HAL OWEN & ASSOCIATES, INC.
The nearest named water body to the site is Beaver Creek which has a North Carolina
surface water classification of C. There are no designated anadromous fish waters or Primary
Nursery Areas (PNA) present in the study area. There are no Outstanding Resource Waters
(ORW), High Quality Waters (HQW), water supply watersheds (WS-I or WS-II), or Class SA
Waters within 1 mile of the project study area or within 1 mile downstream.

The NRCS Soil Survey indicates that Johnston soils occur on the property in the vicinity
of Beaver Creek. The Soil Survey indicates that adjacent upland areas are made up of soils of
the Blaney series and Candor series.

J URISDICTIONAL S URFACE W ATERS A ND W ETLANDS I NVESTIGATION

A wetland delineation was conducted for the subject property on 23 April 2018. Areas
that meet the required criteria for wetlands were observed and are approximately shown in
Figure 4. The boundary of the wetland area was delineated on the ground by placing flagging
along the perimeter and numbering the flags consecutively as annotated on the map. It is
recommended that the wetland boundary be survey located for accuracy.

While at the site, a representative location was chosen along the wetland boundary at
which to complete a set of Wetland Determination Data Forms and take photographs (enclosed).

G ENERAL I NFORMATION A BOUT P ERMITTING

It is encouraged that you use care and good judgment when working in or around stream
and wetland areas. Current environmental regulations require a CWA §404 permit from the
USACE and a matching §401 water quality certification from the North Carolina Division of
Water Resources (NCDWR) for any activity that impacts regulated waters (including wetlands);
which includes filling, draining, and mechanized land clearing. A permit application prior to
construction must be submitted to both agencies if it is anticipated that stream or wetland
impacts will occur. General permits are available for activities that will impact less than 0.5 acre
of wetlands or waters and less than 300 linear feet of stream, and they cover typical activities
such as road crossings and building foundations. These type permits can usually be secured in
about two to three months. For impacts that exceed 0.5 acre of wetlands or 300 linear feet of
stream, an individual permit will be necessary. Individual permit applications are time
consuming to process (6 12 months) because of the public review period and numerous public
agencies involved. Whether a general or individual permit is sought, the applicant is required to
show that all measures have been taken to minimize and avoid impacts. Unavoidable impacts
require mitigation and may include the creation of new wetlands, preservation of existing
wetlands, payment into a wetland fund, or some combination. Additional information about
regulatory requirements and permitting can be provided at your request.

HAL OWEN & ASSOCIATES, INC.
I appreciate the opportunity to provide this service and trust that you will feel free to call
on me again in the future. If you have any questions or need additional information, please
contact me at your convenience.
Sincerely,

Krissina B. Newcomb
Project Environmental Scientist I

Q UALIFICATIONS OF I NVESTIGATOR

Krissina Newcomb is an Environmental Scientist with Hal Owen & Associates, Inc. She
Coastal Concentration in 1998. She has worked for Hal Owen & Associates since 1998,
specializing in wetlands investigations, permitting, and state riparian buffer assessments. In
addition, she has been trained under Mr. Owen to conducted Phase 1 Environmental Site
Assessments and Environmental Evaluations for NCDOT Borrow/Waste Sites.

Figures:

Figure 1. Vicinity Map
Figure 2. Site Map
Figure 3. USGS Topographic Map
Figure 4. Streams and Wetlands identified at subject site

Attachments:

Wetland Determination Data Forms 1 wetland, 1 upland
USFWS National Wetlands Inventory Map
ConnectGIS Hoke County Aerial Photograph
NC Floodplain Mapping
NRCS Soil Mapping

HAL OWEN & ASSOCIATES, INC.
Figure 1. Vicinity map
The subject property is located northwest of US HWY 401, RaefordNC.
Site coordinates are 35.012778, -79.163432

Site

Site

HAL OWEN & ASSOCIATES, INC.
Figure 2. Site Map

HAL OWEN & ASSOCIATES, INC.
Figure 3. USGS Topographic Map

2016

HAL OWEN & ASSOCIATES, INC.
Figure 4. Streams and Wetlands identified at subject site.

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