Soils Report - RevisedNeedham Environmental Inc.
Robert N. Needham, PWS Tom Gulley, NCLSS#1256
9100 Charlestowne Rd. SE P.O. Box 960
Winnabow, NC 28479 Wilmington, NC 28402
Office/Fax (910)371-6082 Office/Fax (910)795-0319
needhambud@ec.rr.com tgulley@gmail.com
______________________________________________________________________
December 16, 2015
Jack Carlisle
6025 Tarin Road
Wilmington, NC 28409
RE:Revised Class IV Soils investigation for a portion of the Heglar Commons Tract, New
Hanover County, North Carolina.
Dear Mr. Carlisle:
On September 30 , October 9 , and October 15 of this year, Needham Environmental, Inc. madeththth
site visits to the Heglar Commons tract, located north of Lieutenant Congleton Road. The
purpose of these visits were to evaluate the site for the presence of any Class IV Soils. Multiple
hand auger borings to depths of approximately 36" were placed on the tract as part of this
evaluation. The Pamlico Soil Series is identified as a Class IV Soil in the “Technical Report No.
9, Wilmington - New Hanover Comprehensive Planning Program, Classification of Soils in New
Hanover County for Septic Tank Suitability”. The limits of the Class IV Soils or the Pamlico Soil
Series as mapped in the Soil Survey for New Hanover County, North Carolina are shown with a
yellow dotted-line on the attached Class IV Soils Map. The portions of the current project area
within the areas currently mapped as a Class IV Soil in the Soil Survey for New Hanover County,
North Carolina are shown in Blue on the attached map. Only the areas between the yellow,
dotted-lines, that were also part of the current project area, were a part of this Class IV Soils
evaluation.
The identifying soil property of the Pamlico Soil Series is the high organic content of the surface
soil layers. The Pamlico Soil Series is described as a muck, which contains more than 20% total
organic matter or more than 12% organic carbon. The areas shown in “White” on the attached
map have a higher mineral content than the Pamlico Soil Series and appear to be at the upper end
of organic requirement for a mineral muck or has around 20% total organic matter or around 12%
organic carbon. The higher mineral content is due to the oxidation of the original organic material
from the extensive drainage on and around the site. The typical soil description of the Pamlico
Soil Series from the “Soil Survey of New Hanover County, North Carolina” is below. Also
attached are soil profile descriptions at locations X1 and X2. The locations of both descriptions
are shown on the attached map.
The Pamlico Soil Series has a Oi surface layer with more than 70% fiber content. Due to the
extensive drainage on and around the site, the fibric material is no longer present on the majority
of the site and not present at all in the areas shown in “White” on the attached map. The Oa
horizons are described as having 16% to 35% mineral content. Due to the drainage and oxidation
of the organic material, the mineral content is much higher in the areas shown in “White” on the
attached map. Pictures of the white and gray colored mineral quartz sand grains can be seen at
depths of 6" to 36" in the attached pictures for boring X1. Due to the drainage and subsequent
oxidation of the organic material, the areas shown in “White” on the attached map are in
the Murville Soil Series, which is a Class III Soil.
The soil profile description of boring X2 represents the area shown in “Red” on the attached map.
These areas still have some fiber content in the surface soils and also have sapric and hemic
material present at high levels from the soil surface to depths of 48". The high organic matter
content, greater than 20% total organic matter, is similar to the levels found in the Pamlico Soil
Series and would be considered an organic soil or a muck and not a mineral muck. You can see
the fibric material and partially decomposed tree debris in the pictures for boring X2. You can
also see the black and dark brown colored sapric material with no visible mineral sand grains
present as compared to X1. The soils in the area shown in “Red” on the attached map are wetter
than the soils in the area shown in “White” and less oxidation has occurred. Due to this, the
organic content is still high and the areas in “Red” on the attached map are in the Pamlico
Soil Series, which is a Class IV Soil.
The areas shown in “White” on the attached map have a higher mineral content or lower levels of
organic content in the upper 36" of the soil profile than found in the Pamlico Soil Series. This is
due to the oxidation of the organic material that was originally present by the drainage on and
around the tract. Due to the reduced organic content, the areas shown in “White” are the in
the Murville Soil Series, which is a Class III Soil. Any development plans for the upland areas
on this tract should include maintaining the existing drainage and the excavation of any remaining
organic material to the mineral soils below for the stability of building foundations.
If your have any questions or concerns regarding this report, please contact me at (910)795-0319,
(910)297-1282, or by e-mail at tgulley@gmail.com.
Sincerely,
J. Tom Gulley, Jr.
North Carolina Soil Scientist License# 1256
cc:David Syster
Enclosures (4)
CLASS III SOILS
(Le, Ly, & Mu)
CLASS III SOILS
(Le, Ly, & Mu)
CLASS I & III SOILS
(Kr & Ly)
CLASS I & III SOILS
(Kr & Ly)
AREA NOT EVA
UATED
L
AREA NOT EVA
UATED
L
03-15-088/ClassIVmap.cdr
Map Source: Google Maps
Heglar Commons
New Hanover County, NC Class IV Soils Map
Needham Environmental, Inc.
Wilmington, NC
December 2015
Environmental Consultants
SCALE 1" = 400'
NN
LEGEND
Areas mapped as the Pamlico Soil Series, a Class IV Soil, in the Soil Survey of New
Hanover County, North Carolina. Due to the oxidation of organic matter in upper portions of
the soil profile from the adjacent drainage, these soils are now in the Murville Soil Series,
which is a Class III Soil.
This is not a survey. The information contained on this map has been
paced in the field and interpreted using an aerial photograph. The
distances and acreages shown are approximate and not meant to be absolute.
Project Area
Class IV Soils boundary from the Soil Survey of New Hanover County, North Carolina.
The Class IV Soils are the Pamlico Soil Series.
Areas mapped as the Pamlico Soil Series, a Class IV Soil, in the Soil Survey of New
Hanover County, North Carolina. These areas have contain high organic matter
concentrations in the soil profile and would still be classified as the Pamilco Soil Series.
X1
X2
X#Soil profile description location
Project Boundary Shown in Black.
03-15-088/ClassIVmap.cdr
Heglar Commons
New Hanover County, NC
Pictures at
Boring X1
Needham Environmental, Inc.
Wilmington, NC
October 2015
Environmental Consultants
Photo of the mineral sand present in boring X1 at approximately 6” to 12” below the soil
surface. White and gray quartz sand grains visible in picture.
Photo of the mineral sand present in boring X1 at approximately 30” to 36” below the soil
surface. White and gray quartz sand grains visible in picture.
03-15-088/ClassIVmap.cdr
Heglar Commons
New Hanover County, NC
Needham Environmental, Inc.
Wilmington, NC
October 2015
Environmental Consultants
Photo of the fibric and sapric material present in boring X2 at 0” to 12” below the soil
surface. No White and gray quartz sand grains visible in picture.
0”0”
12”12”
42”42”
48”48”Tree DebrisTree Debris
Photo of the hemic material present in boring X2 at 42” to 48” below the soil surface.
Partially decomposed tree and plant debris also present.
Pictures at
Boring X2
Fibric MaterialFibric Material
Sapric MaterialSapric Material