HomeMy WebLinkAboutSW6200701_Report (Soils)_20210119Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax (910) 822-4540
Email mike@southPasternsoil.com
April 3, 2020
Mr. George Rose, PE
PO Box 53441
Fayetteville, NC 28305
Re: Seasonal water table determination (SHWT), portions of Naze Property, PIN's
0513-86-6598.000, NC Hwy. 210 South, Harnett County, North Carolina
Dear Mr. Rose,
An evaluation of soil properties has been conducted at your request on portions of the
aforementioned property. The purpose of the investigation was to determine Seasonal
High -Water Table depths (SHWT) for use in storrnwater retention/treatment design.
SHWT depths are determined in auger borings based on observable characteristics in soil
profiles.
Soils at the proposed site are most similar to the Gilead soil series (see attached boring
logs). Two soil borings were advanced to a depth of at Ieast 7.0 feet below the soil
surface. Seasonal High -Water Table (SHWT) as determined by evidence of colors of
chroma 2 or less (and/or concentrations of high redox mottles) was encountered at depths
of 32 and 35 inches below the existing ground surface (see chart attached).
It should be noted that the reported SHWT does not necessarily reflect the elevation of
static groundwater (due to variations in groundwater recharge rates, annual rainfall,
drought conditions, etc.).
The data presented in this report are limited by a number of considerations. The primary
consideration is that soil formations can be highly variable. The soils found on this site
can be subject to inclusions of other soil types, perched water, artesian conditions and/or
layers of undulating low permeability clay seams. These and other soil conditions can
have an effect on the steady state of groundwater flow. To the extent possible, we have
SOiLISITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGEIMOUNDING • SURFACEISUBSUAFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN
identified the soil types that will impact the flow of groundwater and have provided a
professional opinion as to the depth of SHWT.
I trust this is the information you require at this time.
Sincerely,
AIIIZ4)6c�-
Mike Eaker
NC Licensed Soil Scientist 41030
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Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax (910) 822-4540
Email mike@southeasternsoil.com
SHWT depths, Nam Property, NC Hwy. 210 South, Harnett County, NC
BORING SHWT DEPTH (inLkesl Observed Water inches
1 32 60
2 35 67
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING • SURFACEISUSSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN
Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax (910) 822-4540
Email mike@southeastemsoil.com
Soil Boring Log (Boring 1), Nam Properly, NC Hwy 210 South, Harnett County, NC
This map unit consists of moderately well drained soils on uplands. These soils formed
in clayey sediment. Slope ranged from 1 to 3 percent.
0 to 12 — mixed sand and clay fill material.
E - 12 to 28 inches; yellowish brown (1 OYR 5/4) loamy sand; weak fine granular
structure; very friable; many fine and medium roots; clear wavy boundary.
Btl - 28 to 32 inches; reddish yellow (7.5YR 6/8) sandy clay loam; weak medium
subangular blocky structure; firm; gradual wavy boundary.
Bt2 - 32 to 62 inches; mottled reddish yellow (7.5YR 6/8) and light gray (2.5Y 7/1) silty
clay; massive parting to angular blocky structure; very firm; gradual wavy boundary.
C1 - 62 to 78 inches; light gray (2.5Y 7/1) silty clay loam; firm; massive structure;
gradual wavy boundary.
C2 - 78 to 84 inches; light gray (2.5Y 7/1) coarse loamy sand; very friable; massive
structure.
SHWT @ 32 inches (2.5Y 7/1)
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING • SURFACI (SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN
Southeastern soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax (91 D) 822-4540
Email mike@souiheasternsoil.com
Soil Boring Log (Boring 2), Nam Property, NC Hwy 210 South, Harnett County, NC
This map unit consists of moderately well drained soils on uplands. These soils formed
in clayey sediment. Slope ranged from 1 to 3 percent.
A - 0 to 4; dark brown (IOYR 3/3) loamy sand; weak fine granular structure; very friable;
many fine and medium roots; clear smooth boundary.
E - 4 to 9 inches; yellowish brown (IOYR 5/6) loamy sand; weak fine granular structure;
very friable; many fine and medium roots; clear wavy boundary.
Bt - 9 to 26 inches; yellowish brown (1 OYR 5/8) sandy clay loam; weak fine subangular
blocky structure; firm; gradual wavy boundary.
BC - 26 to 35 inches; strong brown (7.5YR 5/6) light sandy clay loam; massive structure;
friable to firm; gradual wavy boundary.
C 1 - 35 to 65 inches; mottled strong brown (7.5YR 5/6), red (2.5YR 5/8) and light gray
(2.5Y 7/1) sandy clay loam; firm; massive structure; gradual diffuse boundary.
C2 - 65 to 84 inches; mottled strong brown (7.5YR 5/6), red (2.5YR 5/8) and light gray
(2.5Y 7/1) silty clay; very firm; massive structure.
SHWT @ 35 inches (2.5Y 7/1)
SOUSITE EVALUATION • SOIL PHYSICAL ANALYSIS - LAND USE/SUBDIVISiON PLANNING - WETLANDS
GROUNDWATER DRAINAGE/MOUNDING - SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8, DESIGN
SOILISITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING . SURFACEISUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN
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