SW4211101_Soils/Geotechnical Report_20211109

PIEDMONT
NVIRONMENTAL
A S S O C I A T E S, P. A.
1/28/2021
WBY4, Inc.
Attn: Mr. Will Yearns
532 Hillwood Ct.
Greensboro, NC 27410
Dear Mr. Yearns,
Project 4 1959
This report details the findings of a preliminary site and soil evaluation performed on
3810 Flatrock Road, Forsyth County, +/-33 acres. The evaluation was conducted at the
clients request in order to determine the site's suitability for the installation of sub-
surface wastewater disposal systems to serve domestic strength wastewater.
The evaluation was conducted during moist soil conditions on September 3, 2020 with
the use of ahand-auger then with a mini -excavator on January 27th. Characteristics that
affect the suitability of sub -surface systems include soil depth to expansive clay, seasonal
high-water table, rock, and unusable saprolite. Topography and slope also affect the
suitability of an area for septic systems. The evaluation of these components was
conducted on the site.
The soybeans have been harvested making access and visibility much better. Soils on the
site are highly eroded to saprolite especially on the top of the slopes and the shoulders.
Rock was encountered mainly along the tops of the slopes. After using the mini -
excavator, it is our opinion that shallow depths to rock will likely be encountered along
the ridge tops with highly variable depths. These areas are scattered among the Usable
Soil polygon shown on the map. The variability to soil depth is high. Shallow soil
depths become critical when planning slab construction. Remember, slab construction
can render an otherwise usable lot unsuitable if the building pad cuts into the septic
system area. A grading plan is essential to avoiding problems with septic systems. That
grading plan must be followed and allow the correct amount of soil for a septic system
and a repair area. The majority of the rock was along the ridge that has been cut out and
scattered along that back field just above the woods. This may be an issue for road
construction. The red hatched areas are at least 24 inches to an unsuitable characteristic
and these areas have potential for modified conventional and accepted type wastewater
systems.
Septic systems are sized according to the number of bedrooms in the proposed dwelling.
Each bedroom in the proposed dwelling is calculated to generate a daily flow of 120
gallons. A four-bedroomdwelling would have a daily calculated flow of 480 gallons.
216 South Swing Road, Greensboro, NC 27409 336-344-4008

The LTAR and the daily flow are used to determine the area needed for the primary
septic system and the reserve area. A general guide for the piedmont of North Carolina is
approximately 10,000 to 12,000 W of area for the primary and repair areas for each lot
after all setbacks are taken into account. We understand that you would like to pursue
permitting of the lots under session law 2018-114 where a licensed soil scientist performs
the soil evaluations and layouts in lieu of county health department evaluations. Once we
have a look at your proposed subdivision plan, we can assist with this process and
provide a quote for those services.
This report discusses the general location of potentially usable soils for on -site
wastewater disposal and the soil and site limitations on the property that exists at the time
of the evaluation. Piedmont Environmental Associates, PA ("Piedmont") provides
professional consulting specializing in the practice of soil science and wastewater
management. Piedmont is therefore hired for its professional opinion regarding these
matters. Laws and rules governing wastewater treatment and disposal are forever
evolving and subject to the interpretation and opinion of individuals which are employed
by local and state agencies that govern these laws and rules. Due to this fact, Piedmont
cannot guarantee in any way that any area located in the field, shown on a sketch, or
discussed with the client will be permitted by any of these agencies. It is for this reason
that Piedmont strongly recommends to anyone considering a financial commitment
on any piece of property be completely aware of any and all permit requirements on
that property before purchase and obtain those permits prior to a final financial
commitment.
If you have any further questions, please feel free to call. Thank you for the opportunity
to serve.
Sincerely,
R. Edwin Stott, REHS, MSEH
NC Licensed Soil Scientist
Piedmont Environmental Associates

Attachment I
1950 Location of Sanitary Sewage Systems
(c) Every sanitary sewage treatment and disposal system shall be located at least the minimum
horizontal distance from the following:
(1) Any private water supply source including a well or spring
100 feet
(2) Any public water supply source
100 feet
(3) Streams classified as WS-I
100 feet
(4) Water classified as S.A.
100 feet
from mean high water mark
(5) Other coastal waters
50 feet
from mean high water mark
(6) Any other stream, canal, marsh, or other surface waters
50 feet
(7) Any Class I or Class II reservoir
100 feet
from normal pool elevation
(8) Any permanent storm water retention pond
50 feet
from flood pool elevation
(9) Any other lake or pond
50 feet
from normal pool elevation
(10) Any building foundation
5 feet
(11) Any basement
15 feet
(12) Any property line
10 feet
(13) Top of slope of embankments or cuts of 2 feet or more
vertical height
15 feet
(14) Any water line
10 feet
(15) Drainage systems:
(A) Interceptor drains, foundation drains and storm water diversions
(i) upslope
10 feet
(ii) sideslope
15 feet
(iii) downslope
25 feet
(B) Groundwater lowering ditched and devices
25 feet
(16) any swimming pool 15 feet
(17) any other nitrification field (except repair area) 20 feet
(b) Ground absorption, sewage treatment and disposal systems may be located closer than
100 feet from a private well supply, except springs and uncased wells located
downslope and used as a source of drinking water, repairs, space limitations and other
site -planning considerations but shall be located the maximum feasible distance and,
in no case, less than 50 feet.
(c) Nitrification fields and repair areas shall not be located under paved areas or areas
subject to vehicular traffic. If effluent is to be conveyed under areas subject to
vehicular traffic, ductile iron or its equivalent pipe shall be used. However, pipe
specified in Rule .1955 (e) may be used if a minimum of 30 inches of compacted cover
is provided over the pipe.
Note: Systems over 3000 GPD or an individual nitrification fields with a capacity of 1500 GPD or more have
more restrictive setback requirements, see .1950 (a) (17) (d) for specifics.

3810 Old Flatrock Rd
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ENVIRONMENTAL
A S S O C I A T E S P A.
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216 S. Swing Rd. Suite 1 Job# 1959
Greensboro, NC 27409 Date: 1/28/2021
piedmontsoil.com Client: WBY4, Inc.
County: Forsyth
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METI, Esri China (Hong Kong), Esri Korea,
jobs
Esri (Thailand), NGCC, (c) OpenStreetMap
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contributors, and the GIS User Community