SW6240702_Soils/Geotechnical Report_20240924

SOIL se�F
Engineers and Sail Scientists
Agri-Waste Technology,Inc.
501 North Salem Street --
Suite 203 •�O""
Apex,NC 27502 122
www.agriwaste.com
Seasonal High Water Table (SHWT)Assessment and Infiltration Testing
Coats Storage, E Stewart Street, Coats, NC (Harnett County)
PREPARED FOR: Mr. Landon Lovelace, Underfoot Engineering
PREPARED BY: Jeff Vaughan
DATE: November 2, 2018
A seasonal high water table (SHWT) assessment and infiltration testing was conducted
for the proposed Coats Storage facility in Coats, NC, on October 31, 2018. Jeff Vaughan
and Gary Morehouse of Agri-Waste Technology, Inc. (AWT) conducted the evaluation.
Property reference maps (provided by Mr. Landon Lovelace of Underfoot Engineering)is
in Attachment 1. The locations for the assessment and testing was shown to AWT
personnel by Mr. Landon Lovelace via the maps in Attachment 1. The locations were
found in the field using GPS technology.
The predominant soil type mapped on the property is Dothan loamy sand (map symbol
DoA), with a small area of Norfolk loamy sand (map symbol NoB) in the northwest
corner of the property (Attachment 1 and 2). Soil borings were advanced at the 6
locations on October 31, 2018, and indicated that the soil type was most like the Dothan
loamy sand soil type. The Harnett County Soil Survey indicates that the Dothan loamy
sand soil type has a perched SHWT between 3 and 5 feet below the soil surface. The soil
borings advanced by AWT personnel on October 31, 2018, indicated a perched SHWT
between 51 and 89 inches below the soil surface as indicated in the Table below.
Infiltration tests were also conducted at each of the 6 locations using a concentric ring
infiltrometer(Attachment 1 and 3). Each test occurred for approximately 1 hour with 30-
40 minutes of equilibration and 5-35 minutes of measurements. The measured
infiltration rates ranged from as shown in the Table below.
1

Seasonal High Water Table (SHWT) and Infiltration Rate Testing Information for Coats
Storage.
Site Location SHWT De th Infiltration Rate
-----inches----- -----in/hr-----
BMP 91 53 5.54
BMP 91-A 51 7.09
BMP 91-B 89 13.09
BMP 92 58 27.27
BMP 92-A 88 7.89
BMP 92-B 86 4.29
We appreciate the opportunity to assist you in this matter. Please contact us with any
questions, concerns, or comments.
underfoot engineering-coats storage
2

ATTACHMENT 1: Property Map Detailing Soil Borings and
Soil Types

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Surrounding County Boundaries
July 27, 2018
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***This map was created for proposed planning purposes only. It is not intended to be used as a plat or survey map of any type.***

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ATTACHMENT 2: Soil Survey Information

168 Soil 5u,
TABLE IS.--SOIL AND WATER FEATURES
("Flooding" and "water table" and terms such as "rare," "brief," "apparent," and "perched" are explained in the
text. The symbol < means less than; > means more than. Absence of an entry indicates that the feature is
not a concern or that data were not estimated)
I I Flooding I High water table 1 Bedrock I Risk of corrosion
Soil name and (Hydro-1 I I I I I 1 I I I
map symbol I logic) Frequency I Duration IMonths I Depth I Rind (Months I Depth IHard- (uncoated IConcr4ate
Igroup I I I I I I I I ness I steel I
I I I I I Ft I I I In I I I
AnB---------------I A INone--------I --- I --- 1 >6.0 1 --- 1 --- I >60 1 --- ILow------(High.
Alpin
I I I I I 1 I I 1 I i
AtA---------------I C IRare--------I --- I --- 11.5-2.51ApparentlDec-Apr) >60 1 --- IModerate IModerate.
Altavista I I I I 1 I I I 1 I l
I I I I I I I I 1 I 1
Au----------------I C (Rare--------I --- I --- I1.0-2.OlApparentlDec-Mayl >60 1 --- I High-----IModerate.
Augusta 1 I I I I I I 1 1 I I
I I I 1 I I I I I I I
AyA, AyB----------I B INone--------I --- 1 --- 14.0-6.OlPerched !Jan-Aprl >60 1 --- IModerate !High,
Aycock
I I I 1 I I I I I 1 I
Bb----------------I D !Frequent----(Brief to IDec-Mayl0.5-1.5lApparentlDec-Apr) >60 1 --- IHigh-----IModerate.
Bibb I I I long. I I I I I I 1 I
I I I I I I I I I I I
BnS, BnD----------I B INone--------I --- I --- 1 >6.0 1 --- I --- 1 >60 1 --- IModerate IHigh.
Blaney I I I I I I I I I I I
I I I I I I I I I I I
CaB, CaD----------I A !None--------I --- I --- ! >6.0 1 --- I -_- 1 >60 ! --- ILow------ILow.
Candor I I I I ! 1 I I I I I
I I I I I I I I I I I
CeB, CeD----------1 B INone---------I --- I --- 1 >6.0 1 --- I --- I >60 I --- IModerate IModerate.
Cecil I I 1 I I I I I I I 1
I I 1 ! I I I I I I 1
Ch*: I I 1 I I I I I I I 1
Chewacla---------I C !Frequent----(Brief to INov-Apr10.5-1.5lApparentlNov-Apr1 >60 1 --- !High-----IModerate.
I I 1 long. I I I I I I I I
I I I I I 1 I 1 I I I
Congaree---------I B lFrequent----lBrief-----lNov-Aprl2.5-4.OlApparentlNov-Apr1 Y60 1 ---- IModerate IModerate.
I I I I I 1 I I I I I
Co----------------I D !None--------I --- I --- 1 0-1.5lApparentlNov-Aprl 760 1 --- IHigh-----!High.
Coxville I I I I I I I I 1 I I
I I I I I I I I 1 I I
DoA, DoB, DtB-----I B INone--------I --- I --- 13.0-5.OIPerched (Jan-Apr) 360 1 --- IModerate IModerate.
Dothan l I I I I I 1 I I I 1
I I I I I I 1 I 1 I 1
DyF_ I I I I I I 1 I I I I
Dystrochrepts I I 1 I I I I 1 I I I
! I 1 I I I ( I I I I
EnB, EnD----------I C INone--------I --- I --- 1 >6.0 1 --- I --- 1 760 1 --- IHigh_----IModerate.
Enon I 1 I I I I I I I I I
1 I I I I I i I I I I
ExA---------------I C INone--------I --- I --- 12.0-3.OlApparentlDec-Aprl >60 1 --- IModerate IHigh,
Exum I I I I I I I ! I I I
I I I 1 I 1 I I I I I
FaB, FuB----------I B lNone--------I --- 1 --- 14.0-6.01Perched Ilan-Marl >60 1 --- ILow------!High.
Fuquay I I I 1 1 I I I I I I
I I I I I I I I I I I
GaA, GaB, GaD-----I C INone--------I --- I --- I1.5-2.5lPerched (Jan-Marl >60 I --- IModerate (High.
Gilead I I 1 I I 1 I I I I 1
I I I I I 1 I I I 1 I
GoA---------------I B INone--------I --- I --- 12.0-3.OlApparentlDec-Aprl >60 1 --- IModerate !High.
Goldsboro 1 I I I I I I I I 1 I
1 I I I I I I I I 1 I
Gr----------------I D INone---------I --- I --- I 0-1.0IApparentlDec-Mayl >60 1 --- !High-----!High.
Grantham 1 I I I I I I I I I I
I I I 1 1 I 1 1 I I I
See footnote at end of table.

Harnett County, North Carolina 169
TABLE 15.--SOIL AND WATER FEATURES--Continued
I I Flooding I High water table I Bedrock I Risk of corrosion
Soil name and (Hydro-I I I I I I I I I I
map symbol I logic) Frequency I Duration IMonths I Depth I Kind IMonths IDepthlHard- (Uncoated IConcrete
Igroup I I I I I I I I ness I steel I
I I I I I Ft I I I In I I I
HaB---------------I C INone--------I --- I --- 11.5-2.5IPerched Ilan-Apr1 >60 1 --- (High-----(High.
Helena I 1 I I I I I I I I I
I 1 I I I I I I I I I
LaB---------------I A INone--------I --- I --- 1 >6.0 1 --- I --- 1 >60 1 --- ILow------IModerate.
Lakeland I 1 I I I I I I ! I I
I I I I I I I I I I I
LnB, LnD, LnE-----I B INone--------I --- I --- 1 >6.0 1 --- I --- 1 >60 1 --- ILow------IModerate.
Lillington I I I I I I I I I I I
I I I I I I I I I I I
LOF---------------I B INone--------I --- I --- 1 >6.0 1 --- I --- 110-201Soft ILow------IModerate.
Louisa I I I I 1 I I I I I I
1 I I I ( I I I I I I
Ly----------------I C INone--------I --- I --- 10.5-1.5lApparentlNov-Apr) >60 1 --- IHigh-----(High.
Lynchburg I I I I I I I I I I I
I i I I I I I I I I I
MaA, MaB----------I B INone--------I --- I --- 1 >6.0 1 --- I --- 1 >60 1 --- (High-----IHigh.
Marlboro I I I I I I I I 1 I I
I I I I I I I I 1 I I
Na----------------I C INone--------I --- I --- 11.0-2.51APparentlDec-Mayl >60 1 --- IHigh-----IHigh.
Nahunta I I 1 I I I I I 1 I I
I I 1 I I I I I 1 I I
NeD, NeE----------1 C INone--------I --- I --- 1 >6.0 1 --- I --- 140-601Soft IModerate IHigh.
Nason 1 I I I I I I I 1 I I
1 I I I I I I I 1 I I
NOA, NoB, NoC-----I B INone--------I --- I --- 14.0-6.OlApparentlJan-Marl >60 1 --- IModerate IHigh.
Norfolk I I I I 1 I I I 1 I I
I I I I I I I I I I I
NuB*: I I I I I I I I 1 I I
Norfolk----------I B INone--------I --- I --- 14.0-6.OlApparentlJan-Marl >60 1 --- IModerate IHigh-
- I I I I I I I I I I I
Urban land. I I I I I I I I I I I
I I I 1 I I I I I I I
OrB ---------I B INone--------I --- 1 --- 1 >6-0 1 --- I --- 1 >60 1 --- IModerate IModerate.
Orangeburg I I I 1 I I I I I I I
I I I I I I I I I I I
PaE---------------I B INone--------I --- I --- 1 >6.0 1 --- I --- 1 >60 1 --- IHigh-----IHigh.
Pacolet I I I 1 I I I I I I I
I I I I I I I I I I I
Pc----------------I A Mare--------I --- I --- 11.5-3.OIApparentlDec-Apr1 >60 1 --- ILow------IHigh.
Pactolus I 1 I I I I I I I I I
I 1 I I I I I I I I I
Pd*: I I I I I I I I I I I
Pits. I I I I 1 I I I I I I
I I I I 1 I I I I I I
Dumps. I I I I I I I I I I I
I I I I 1 I I I I I I
Pf----------------I A INone--------I --- I --- 1 >4.0 IPerched IDec-Marl >60 1 --- ILow------IHigh.
Pocalla I I I I I I I I I I I
I I I I I I I I I I I
Pn----------------I AJD (Frequent----IVery long IDec-Marl +1-0.51ApparentlNov-Apr1 >60 1 --- IHigh-----IHigh.
Polawana I I I I I I I I I I I
I I I I I I I I I I I
Ps----------------I B/D IRare--------I --- I --- I 0-1.OlApparentlNov-Mayl >60 1 --- IHigh-----IHigh.
Portsmouth I I I I I I I 1 I I I
I I 1 I I I I I 1 1 I
Ra----------------I B/D (None--------I --- I --- I 0-1.OlApparentlNov-Aprl >60 1 --- IHigh-----IHigh.
Rains I I 1 I I I I 1 I I I
I I I I I I I I I I I
Rb*: I I I I I I I I I I I
Rains------------i B/D INone--------I --- I --- I 0-1.OlApparentlNov-Aprl >60 1 --- IHigh-----IHigh.
I I I I I 1 I I I I I
See footnote at end of table.

ATTACHMENT 3: Pictures

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