SW6221202_Design Calculations_20221214

Sediment, Erosion Control, & Stormwater
Calculations
For
HIES EASTOVER
VP FRESH FOODS
CUMBERLAND COUNTY, NC
MAY 2022
ti�trr���
A, C
JOB NO.21047
CLAYTON �Ez'z°
041GINEBtING 8 DESIGN

CLAYTON
ENGINEERING & DESIGN
HIES EASTOVE R
EROSION, SEDIMENTATION & STORMWATER
Project Narrative
Our client wishes to construct a new hotel in Eastover. Project will include one building with required parking
and drives. Please see the attached plans. The total site is 6.55 acres and approximately 2.00 acres will be
disturbed during construction. This is the second phase to a project that started in 2018. The c-store and DQ
were completed in 2020. The majority of the site work, grading, and erosion control were completed for the
entire site. Phase 2 is for the construction of the hotel building. This will include minor site work, installation of
BMPs, and final paving etc.
Post construction stormwater will be handled through a series of infiltration basins fed by storm piping and
pervious paving. This is a connected system that allows water to be stored and released over time to the outlets.
Soil erosion will be controlled with the use of perimeter silt fence, a skimmer basin, and a series of diversion
swales. Approximately 2.00 acres of area will be disturbed during construction. Several temporary diversions
will be utilized to direct flow into the skimmer basin. Silt fence inlet protection will be installed concurrently with
the installation of the new storm drain piping. Calculations for temporary skimmer basin sizing are found in the
following report. As stated before... the majority of the site work is complete and the site is currently stable.
Erosion control measures were designed in accordance with NCDENR Erosion and Sediment Control Planning
and Design Manual, 2006 edition.

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CLAYTON
ENGINEERING & DESIGN
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ALLTYPE CONSTRUCTION
MANAGEMENT, INC
Drawing Title
USGS MAP
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NOT TO SCALE
Projr_t rtfo
Data
06/29/22
HOLIDAY INN EXPRESS
Job No.
& SUITES
18053
C-001
Project Locotion
EASTOVER, NC
Snt. 1 of 1

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Soil Map —Cumberland County, North Carolina
Map Unit Legend
f
Map Unit Symbol
Map Unit Name
AyB
Aycock loam, 1 to 4 percent
slopes
BrB
Bragg sandy loam, 1 to 4
percent slopes
Gr
Grantham loam
JT
Johnston loam
Na
Nahunta loam
NoA
Norfolk loamy sand, 0 to 2
percent slopes
Ra
Rains sandy loam, 0 to 2
percent slopes
WaB
Wagram loamy sand, 0 to 6
percent slopes
Totals for Area of Interest
r[SDA Natural Resources
Conservation Service
Acres In AOI Percent of AO1
Web Soil Survey
National Cooperative Soil Survey
1.9 3.9%
19.5 40.7%
0.9
1.9%
0.0
0.0%
4.7
9.8%
8.3
17.4%
10.8 22.5%
1.9 3.9%
48.0 100.0%
6/29/2022
Page 3 of 3

Sequence Of Construction Activities
1. Determine and mark limits of disturbance.
2. Construct stabilized construction entrance.
3. Place perimeter sediment fence and stone outlets.
4. Construct temporary skimmer basins and temporary diversions. Place seeding
immediately after constructing these structures. These structures shall be
constructed prior to the disturbance of each contributing area.
5. Begin demolition of existing structures in accordance with the Demolition Plan.
6. Remove topsoil and stockpile for use on slopes and in berms. Stockpile area is
designated on plans or as directed by engineer.
7. Construct storm drainage. Excavated drop inlet protection and outlet protection to
be constructed concurrently with storm drains. Silt sacks are to be installed at
each inlet upon placement of base course.
8. Place temporary seeding on all disturbed areas.
9. Complete final grading.
10. Place permanent seeding and do final landscaping.
11. Remove temporary erosion control measures after site is stabilized.
12. Estimated time before final stabilization is 3 months after completion of
construction.

Maintenance Plan
1. All erosion and sediment control practices will be checked For stability and proper
operation following every runoff -producing rainfall, but at a minimum of once
every week. Any needed repairs will be made immediately to maintain all erosion
and sedimentation controls as designed.
2. Stabilization measures shall be initiated as soon as practicable in portions of the
site where construction activities have temporarily or permanently ceased, but in
no case more than 14 days after the construction activity in that portion of the site
has temporarily or permanently ceased, unless activity in that portion of the site
will resume within 21 days.
3. Silt/sediment fences will be repaired as necessary to maintain a barrier. Sediment
will be removed from behind the fence when it becomes about 0.5 feet deep.
Removed sediment shall be disposed of in a suitable area and stabilized to prevent
erosion and sedimentation.
4. All seeded areas will be fertilized, reseeded as necessary, and mulched to
maintain a vigorous, dense vegetative cover.
5. Additional control devices may be required during construction in order to control
erosion and/or off site sedimentation. All temporary control devices shall be
removed once construction is completed and the site is stabilized.
6. Where practicable, trenches should be filled, covered, and temporary seeding
applied at the end of each day.
7. Contractor must take necessary action to minimize the tracking of mud onto the
paved roadway from construction areas. The contractor shall daily remove
mud/soil from pavement, as maybe required.

Calculated By: Date:
Checked By: Date. -

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