NCG140536_Application_20240220

FOR AGUCY USE ONLY RECEIVED
NCG14 U 5 3 (� FEB W11
Assigned to: 13 • COOK 20
ARO FRO MRO RRO WAR WIRO WSRO
Division of Energy, Mineral, and Land Resources Land Quality Section
National Pollutant Discharge Elimination System
NCG140000 Notice of Intent
This General Permit covers STORMWATER AND/OR WASTEWATER DISCHARGES associated with activities under
SIC(Standard Industrial Classification)Code 3273[Ready Mix Concrete]and like activities. You can find
information on the DEMLR Stormwater Program at deq.nc.gov/SW.
Directions: Print or type all entries on this application. Send the original,signed application with all required
items listed in Item (8)below to: NCDEMLR Stormwater Program, 1612 MSC,Raleigh,INC 27699-1612. The
submission of this application does not guarantee coverage under the General Permit. Prior to coverage under
this General Permit a site inspection will be conducted.
1. Owner/Operator(to whom all permit correspondence will be mailed):
Name of legal organizational entity: Legally responsible person as signed in Item(9)below:
Chaney Materials, LLC rra-n •s H&U Cl,,�
Street address: City: State: Zip Code:
2410 Evergreen Rd, Suite 201 Goambrills MD - 21054
Telephone number: Email address:
301-932-5000 [e-mail]
Type of Ownership:
Government
❑County ❑ Federal ❑ Municipal ❑State
Non-government
99 Business(If ownership is business,a copy of NCSOS report must be included with this application)
❑Individual
2. Industrial Facility(facility being permitted):
Facility name: Facility environmental contact:
Powells Point RMC Facility Victor Vilece
Street address: City: State: Zip Code:
104 Hines Commerce Drive Powell's Point NC 27966
Parcel Identification Number(PIN): County:
Currituck
Telephone number: Email address:
301-MI-6094 [e-mail]
4-digit SIC code: Facility is: Date operation is to begin or began:
3273 C3 New ❑ Proposed ❑ Existing Jan 2024
Latitude of entrance: Longitude of entrance:
36°6'50.43'N 75°49'50.55"W
Brief description of the types of industrial activities and products manufactured at this facility:
Ready mix concrete batch plant
If the stormwater discharges to a municipal separate storm sewer system(M54),name the operator of the MS4:
EX N/A
Page 1 of 7

This facility uses:
❑ Phosphorus-containing detergents
❑ Non-Phosphorus-containing detergents
❑ Brighteners
❑ Other Cleaning Agents
❑ Other:
This facility has a closed-loop recycle system that meets design requirements in 15A NCAC 02T. 1000 and hold the facilities
working volume
❑Yes—stop completion of this N01.Contact DWR Non-Discharge Permitting Program for permitting requirements
IN No
3. Consultant(if applicable):
Name of consultant: Consulting firm:
Street address: City: State: Zip code:
Telephone number: Email address:
4. Outfall(s) (at least one outfall is required to be eligible for coverage):
3-4 digit identifier: Name of receiving water: Classification: _❑_ This water is impaired.
Albemade Sound :. SB`__ ___ -== =- ❑This watershed hasa TMDL.
Discharge from this outfall is from: r
�]Stormwater Only ❑ Wastewater' Only ,l ❑Wastewater Comingled with Stormwater
7Q10 Flow of receiving waterbody(if discharging Wastewater,Only or Wastewater Comingled With Stormwater,to.waters
classified as HQW,ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs'from this outfall: r:1'
Only during a rainfall event ❑.Intermittently(indicate how often) '❑ Continuously(indicate;flow in CFS)
Latitude of outfall; Longitude of outfall:
36'6'51.6456"N ^,,; ;, ,4, ,.;y, ;, ,ZS"49'56.1396'W "-
Brief description of the industrial activities that drain to this outfalk
Stone water sheet flow.
Do Vehicle Maintenance Activities occur in the drainage are of this outfall? ❑ Yes No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑Stormwater Only ❑Wastewater Only ❑Wastewater Comingled with Stormwater
7Q10 Flow of receiving waterbody(if discharging Wastewater Only or Wastewater Comingled with Stormwater to waters
classified as HOW,ORW,Tr,WS-I,WS-II,WS-111,SA,or PNA):
Discharge occurs from this outfall:
❑ Only during a rainfall event ❑Intermittently(indicate how often) ❑Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage are of this outfall? ❑ Yes ❑ No
If yes,how many gallons of new motor ail are used each month when averaged over the calendar year?
Page 2 of 7

3-4 digit identifier:—_Name_of-receiving-water Classification: -0 This"water-is-impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑Stormwater Only ❑Wastewater Only ❑Wastewater Comingled with Stormwater
7Q10 Flow of receiving waterbody(if discharging Wastewater Only or Wastewater Comingled with Stormwater to waters
classified as HOW,ORW,Tr,WS-I,WS-II,WS-III,SA,or PNA):
Discharge occurs from this outfall:
❑ Only during a rainfall event ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: Longitude of outfall:
Brief description of the industrial activities that drain to this outfall:
Do Vehicle Maintenance Activities occur in the drainage are of this outfall? ❑ Yes ❑ No
If yes,how many gallons of new motor oil are used each month when averaged over the calendar year?
3-4 digit identifier: Name of receiving water: Classification: ❑This water is impaired.
❑This watershed has a TMDL.
Discharge from this outfall is from:
❑Stormwater Only ❑Wastewater Only ❑Wastewater Comingled with Stormwater
7010 Flow of receiving waterbody(if discharging Wastewater Only or Wastewater Comingled with Stormwater to waters
classified as HOW,ORW,Tr,WS-I,WS-II,WS=III;SA;'orPNA):-:. =- - -- "" - - -_ -- -----
Discharge occurs from this outfall:
❑ Only during a rainfall event.., ❑ Intermittently(indicate how often) ❑ Continuously(indicate flow in CFS)
Latitude of outfall: : Longitude of outfall:
Brief description of the industrial"activities that drain to this outfall: "
Do Vehicle Maintenance Activities occur in the drainage are of this outfall? - ❑ Yes ❑ No
If yes,how many gallons ofnew motor oil are used each month when averaged over the calendar year?
All outfalls must be listed and at least one outfall is required.Additiodai l'outfalls may be added in the section
"Additional Outfalls"found on the last page of this NO].
5. Wastewater
Types of Wastewater facility will generate or discharge
Vehicle&equipment cleaning(VE) ® Generate ❑ Discharge ® Sent to WW Treatment System
Wetting of raw material stockpiles (RM) InGenerate ❑ Discharge 29 Sent to WW Treatment System
Mixing drum cleaning(MD) I ® Generate ❑ Discharge n Sent to WW Treatment System
Facility will spray-down or actively wet aggregate piles
IN Yes
❑ No
Page 3 of 7

6._W a stewater-treatment.alternatives
What wastewaters were considered for this alternatives review: ❑ VE ❑ RM ❑ MD
Are there existing sewer lines with a one mile radius: ❑ Yes ❑ No
If Yes:
❑ The wastewater treatment plant will accept the wastewater. It is feasible to connect. Explain:
❑ The wastewater treatment plant will accept the wastewater. It is not feasible to connect. Explain:
❑ The wastewater treatment plant will not accept the wastewater(attach a letter documenting)
❑ Surface or subsurface disposal is technologically feasible
❑ Surface or subsurface disposal is not technologically feasible
Explain:
❑ Surface or subsurface disposal system is feasible to implement
❑ Surface or subsurface disposal system is not feasible to implement
Explain:
What is the feasibility of employing a subsurface or surface discharge as compared to a direct discharge to
surface waters? Explain:
Discharge to surface waters is the most environmentally sound alternative of all,reasonably cost-effective
options of the wastewaters being considered:
❑ Yes
❑ No—contact DENILR's Land Application Unit to determine permitting requirements
If this review,6cluded all wastewater_discharge types,would excluding some types make of the above non-
discharge options feasible? - _
❑ Yes -
❑ No _
7. Other Facility Conditions(check all that apply and explain accordingly): ,
❑This facility has a DMLR Erosion&Sedimentation Control Permit. -If checked,list the permit numbers for all current E&SC permits for this facility:
❑This facility has a Division of Waste Management permit.
If checked,list the permit numbers for all current DWM permits for this facility:
❑This facility has other NPDES permits.
If checked,list the permit numbers for all current NPDES permits:
❑This facility has Non-Discharge permits(e.g.recycle permit).
If checked,list the permit numbers for all current Non-Discharge permits:
91 This facility uses best management practices or structural stormwater control measures.
If checked,briefly describe the practices/measures and show on site diagram:
A Stonmwater Management Facility collects and controls stormwater sheet flow from site.
PJ This facility has a Stormwater Pollution Prevention Plan(SWPPP).
If checked,please list the date the SWPPP was implemented:
Jan 2024
Page 4 of 7

-El-This-facility is-subjectto-Phase-ll-Post-Construction-Area
If checked,please list the permitting authority:
®This facility is located in one of the 20 Coastal Counties
If checked,please indicate if the facility is adding more than 10,000 ft2 of built-upon area or is a CAMA Major Permit
❑Will add more than 10,0000 ft of built-upon area
❑ Is a CMA Major Permit
❑Yes to both
ft] No to both
❑This facility is discharging wastewater to a stormwater BMP
If checked,please indicate the permitting authority,and attach letter approval to do so:
❑This facility has wastewater treatment facilities in the 100-year floodplain
❑This facility stores hazardous waste in the 100-year floodplain.
If checked,describe how the area is protected from flooding:
❑This facility is a(mark all that apply)
❑ Hazardous Waste Generation Facility
❑ Hazardous Waste Treatment Facility; - -�_---- . -.,•.— -- --- '` - -- - --.-r'Y4,
❑ Hazardous Waste Storage Facility
❑ Hazardous Waste Disposal'Facility Y __
If checked,indicate: ? S'
Kilograms of waste-generated each month: + Ty'pe(s),ofwaste: '
How material is stored:��.: _ ,. Where material is stored:
Number of waste shipments per year: Name'of transport/disposal vendor:
Transport/disposal vendor EPA ID: Vendor address:
❑This facility is located on a Brownfield or Superfund site
If checked,briefly describe the site conditions
8. Required Items(Application will be returned unless all of the following items have been included):
❑ geck for$100 made payable to NCDEQ
C py of most recent Annual Report to the NC Secretary of State
This completed application and any supporting documentation
A line drawing of the water flow through the facility.
Copy of county map or USGS quad sheet with the location of the facility clearly marked
❑ Letter documenting that WWTP will not accept wastewater(if applicable)
❑Approval from permitting authority to discharge wastewater to a stormwater BMP(if applicable)
Page 5 of 7

19,two(2)24"x 36"site diagrams showing,at a minimum,existing and proposed:
a) outline of drainage areas
b) Stormwater/wastewater treatment structures
c) Location of numbered stormwater/wastewater outfalls(corresponding to which drainage areas)
d) Delineation of drainage areas to each discharge point
e) Runoff conveyance structures
f) Areas and acreage where materials are stored
g) Impervious area acreages
h) Locations(s)of streams and/or wetlands the site is draining to,and applicable buffers
i) Site property lines,North Arrow,and bar scale
j) If applicable,the 300-year floodplain line
k) Acreage of each stormwater and wastewater topographical area
1) Each of the facilities'wastewater or stormwater source and discharge structures and each of its hazardous waste
treatment,storage,or disposal facilities
m) Notation of the water quality classification of the receiving water that site waters eventually discharge to
n) Site location(insert)
9. Applicant Certification:
North Carolina General Statute 143-215.6B(i)provides that: Any person who knowingly makes any false statement,
representation,or certification in any application,record,report,plan,or other document filed or required to be maintained
under this Article or a rule implementing this Article...shall be guilty of a Class 2 misdemeanor which may include a fine not
to exceed ten thousand dollars($10,000).
Under penalty of law, I certify that:
❑ I am the person responsible for the permitted industrial activity,for satisfying the requirements of this permit,and for any
civil or criminal penalties incurred due to violations of this permit.
❑The information submitted in this N01 is,to the best of my knowledge and belief,true,accurate,and complete based on
my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the
information.
❑ 1 will abide by all conditions of the NCG140000permit. I understand that coverage under this permit will constitute the
permit requirements for the discharge(s)and is enforceable in the same manner as an individual permit.
❑ I hereby requestcoverage under the NCG14QOOO General Permit.
un
Printed Name of Applicant: Fro-inC1 S P.
Title: M O—n
X!411�1 _ 2 W 24
i n of Ap i nt (Date Signed)
Mailthe ntire package to: DEMLR—StormwaterProgram
Department of Environmental Quality
1612 Mail Service Center
Raleigh, NC 27699-1612
Page 6 of 7

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SOSID:2688251
Date Filed:8/151202312:08:00 PM
Elaine F.Marshall
orth-CarolinwSecretary-of State
C2023 226 01123
State of North Carolina
Departatent of the Secretary of State
APPLICATION FOR CERTIFICATE OF AUTHORITY
FOR LIMITED LIABILITY COMPANY
Pursuant to§57D-7.03 of the General Statutes ofNorth Carolina,the undersigned limited liability company hereby applies fora
Certificate of Authority to transact business in the State of North Carolina,and for that purpose submits the following:
1. The name of the limited liability company is Chaney Materials, LLC
and if the limited liability company name is unavailable for use in the State of North Carolina,the name the limited
liability company wishes to use is
2. The state or country under whose laws the limited liability company was formed is Maryland
3. Principal office information: (Select either or b)
a. ❑The limited liability company has a principal office.
The principal office telephone number: 310-932-5000
The street address and county of the principal office of the limited liability company is:
Number and Street: 2410 Evergreen Rd. Suite 201 _
City, Gambrills —State:MD Zip Code:21054 County:
The mailing Address,ifdUfererrtfrom the street address,of the principal office of the corporation is:
Number and Street:
City: State:_ Zip Code: County:
b. []The limited liability company dues not have a principal office.
4. The name ofdte registered agent in[he State of North Carolina is: Incorp Services, Inc.
5. The street address and county of the registered agent's office in the State of North Carolina is:
NumbcrandStrcct:176 Mine Lake Court, Suite 100
City,Raleigh State: NC Zipcode:27615 county.
6. The North Carolina retailing address,tf dl,/feront from the street address,of die registered agent's office in the State of North
Carolina is:
Number and Street:
City: State: NC Zip Code: County:
BUSINESS REGISTRATION DIVISION P.U.BOX 29622 RALEIGH,NC 27626.0622
(Revised July 2017) (Farm L-09)

APPLICATION FOR CERTIFICATE OF AUTHORITY
Page 2
7. The names,titles,and usual business addresses of the current company officials of the limited liability company are:
(use atracbment 1(necessmy)('Phis document trust be signed by a Penton listed In!rent 7,)
Nall a mid Tlda Bnsbtess Address
Frauds stay, resident of Chaney Partners
, 9 LLC Its sole member and manager 2410 Evergreen Rd., Suite 201, Gambrills, MD 21054
S. Attached is a certificate of existence(or document of similar import),duly authenticated by the secretary of state or other official
having custody of limited liability company records in the state or country of formation. The Certificate of Existence must be
less than six months old. A photocopy orthe certincatlon cannot be accepted.
9. If the limited liability company is required to use a fictitious name in order to transact business in this State,a copy of the
resolution of its managers adopting the fictitious name is attached.
10.(Optional):Please provide a business e-mail address:
The Secretary of State's Office will a-mail the business automatically at the address provided above at no cost when a document
is riled. Tlie omail provided will not be viewable on the website. For more information on why this service is offered,please see
the instructions for this document.
11.This application will be effective upon filing,unless a delayed date and/or time is specified:
This the 9 day of August 20 23
Ch y Mate 'GIs, LC
Nrune u�• milad Lrrt illfy Campany '
Sig ore of Co Pun• cial
F ie H.Chaney,III,Preslde ney Partners,LLC
its so member end manager
Type or PrinI Name and Title
Notes: --
1. Filing fee Is 5250. This document must be filed with the Secretary of State.
BUSINESS REGISTRATION DIVISION P.O.BOX 29622 RALEIGH,NC 27626-0622
(Revised July 2017) (Form L-09)

STATE OF MARYLAND
Department of Assessments and Taxation
I,MICHAEL L.HIGGS OF THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF THE
STATE OF MARYLAND,DO HEREBY CERTIFY THAT THE DEPARTMENT,BY LAWS OF THE
STATE,IS THE CUSTODIAN OF THE RECORDS OF THIS STATE RELATING TO LIMITED
LIABILITY COMPANIES,OR THE RIGHTS OF LIMITED LIABILITY COMPANIES TO
TRANSACT BUSINESS IN THIS STATE,AND THAT I AM THE PROPER OFFICER TO EXECUTE
THIS CERTIFICATE.
I FURTHER CERTIFY THAT CHANEY MATERIALS,LLC(W24096679),REGISTERED JUNE 20,
2023,IS A LIMITED LIABILITY COMPANY EXISTING UNDER AND BY VIRTUE OF THE LAWS
OF THE STATE OF MARYLAND,AND THAT THE LIMITED LIABILITY COMPANY IS AT THE
TIME OF THIS CERTIFICATE IN GOOD STANDING TO TRANSACT BUSINESS.
IN WITNESS WHEREOF,I HAVE HEREUNTO SUBSCRIBED MY SIGNATURE AND AFFIXED THE
SEAL OF THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF MARYLAND AT
BALTIMORE ON THIS AUGUST 14,2023.
Michael L. Higgs
Directory
ii^.� • L'I p
.Y.
301 West Preston Street, Baltimore,Maryland 21201
Telephone Baltimore Metro [phone]/Outside Baltimore Metro [phone]
MRS(Maryland Relay Service) [phone] TTIVoice
Online Certificate Authentication Code:41BUeg3H3E20h1j09v8QXQ
To verify the Authentication Code,visit http://dat.maryland.gov/verify

STATE OF MARYLAND
Department ofAssessments and Taxation
I,MICHAEL L.HIGGS OF THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF THE
STATE OF MARYLAND,DO HEREBY CERTIFY THAT THE DEPARTMENT,BY LAWS OF THE
STATE,IS THE CUSTODIAN OF THE RECORDS OF THIS STATE RELATING TO LIMITED
LIABILITY COMPANIES,OR THE RIGHTS OF LIMITED LIABILITY COMPANIES TO
TRANSACT BUSINESS IN THIS STATE,AND THAT I AM THE PROPER OFFICER TO EXECUTE
THIS CERTIFICATE.
I FURTHER CERTIFY THAT CHANEY MATERIALS,LLC(W24096679),REGISTERED NNE 20,
2023,IS A LIMITED LIABILITY COMPANY EXISTING UNDER AND BY VIRTUE OF THE LAWS
OF THE STATE OF MARYLAND,AND THAT THE LIMITED LIABILITY COMPANY IS AT THE
TIME OF THIS CERTIFICATE IN GOOD STANDING TO TRANSACT BUSINESS.
IN WITNESS WHEREOF,I HAVE HEREUNTO SUBSCRIBED MY SIGNATURE AND AFFIXED THE
SEAL OF THE STATE DEPARTMENT OF ASSESSMENTS AND TAXATION OF MARYLAND AT
BALTIMORE ON THIS AUGUST 14,2023.
Michael L. Higgs
Director : `` c'iT; ':?��:'
N ,
1]
.in
301 West Preston Street, Baltimore,Maryland 21201
Telephone Baltimore Metro(410) 767-1340/Outside Baltimore Metro [phone]
MRS(Maryland Relay Service) [phone] TT/Voice
Online Certificate Authentication Code:4lBUeg3H3E20h1j09v8QXQ
To verify the Authentication Code,visit http://dat.marylmd.gov/verify

STORMWATER NARRATIVE
Chaney Concrete Batch
Plant
104 Hines Commerce Drive
Currituck County, NC
PREPARED FOR
Kyle Murray
Chaney Enterprises
2410 Evergreen Road, Suite 201
Gambrills, MD 21054
PREPARED BY
sWb.
VHB Engineering NC, P.C. (C-3705)
940 Main Campus Drive
Suite 500
Raleigh, NC 27606
919.829.0328 .......
_ 2
February 27, 2023 = 028714

Stormwater Impact Analysis
Table of Contents
1 Stormwater Impact Analysis.......................................................................................1
1.1-- Project Description....................................................................................................................1 _
1.2 Site Description..........................................................................................................................1
1.3 Site Drainage Analysis..............................................................................................................2
1.3.1 Existing Drainage Conditions...........................................................................2
1.3.2 Proposed Drainage Conditions.......................................................................2
1.4 Erosion Control...........................................................................................................................3
1.5 Operation and Maintenance.................................................................................................3
1.6 Conclusions..................................................................................................................................3
List of Figures
Figure No. Description
Figure 1 Pre-Development Drainage Map
Figure 2 Post-Development Drainage Map
Appendices
AppendixA—Supporting Information and Calculations
• Report of Seasonal High Water Table Estimation and Infiltration Testing
• Soil Survey of Wake County Map
• FEMA FIRMette
• NOAA Atlas 14 Rainfall Data
• SCM Design Calculations
• Nitrogen Export Calculation (Apportioning Method)
• Hydro CAD Analysis
o Pre-Development Conditions
o Post-Development Conditions
• Stormwater Operation and Maintenance Manual and Budget
i Table of Contents

Stormwater Impact Analysis
&��ri
�'VrhbA
1
Stormwater Narrative
This Stormwater Narrative has been prepared to support the Site Permit Review(SPR)
submission for the Chaney Concrete Batch Plant development(the Project) in Raleigh, NC.
The purpose of this narrative is to demonstrate compliance with state and local stormwater
regulations that include the following:
o NCDEQ Stormwater Design Manual
o Currituck County Stormwater Design Manual
1.1 Project Description
The Project is comprised of an existing 3-acre parcel located at 104 Hines Commerce Drive in
Currituck County, NC (Project Site).The Project Site is bounded to the west by the H2OBX
waterpark,to the north by an existing site zoned General Business,to the south by an
undeveloped parcel zoned Industrial,and to the east by an existing industrial site.
Chaney Enterprises is proposing to construct a concrete batch plant to expand their
footprint along the east coast.
1.2 Site Description
The existing topography consists of gradual slopes across most of the site area,with an
upper elevation of about 11'at the northeast corner of the site and dropping to
approximately 7.5' at the outfall swale that encircles the existing dirt cul-de-sac.The site
generally sheet flows north to south before entering the swale.The Project Site is not
located within any FEMA floodplains according to FEMA panel 3720983700K and as shown
on-the-FEMA-FIRMette included-in-Appendix-A.
t

Stormwater Impact Analysis
The NRCS Soil Survey indicates that the site is almost entirely comprised of Dragston loamy
fine sand. Per the NCDEQ Stormwater Design Manual,this soil is classified as either
Hydraulic Soil Group (HSG) D or C, depending on whether the area is well drained.A site visit
was performed by VHB on March 14, 2022,a day after a major storm had come through the
area (0.75 inches in 24 hours) and the site was dry.As a result we will assume the site is well
drained and it will be categorized as HSG C in this analysis.Site Drainage Analysis
A hydrologic analysis comparing pre-and post-development conditions was completed to
ensure that stormwater quantity and quality standards were met. Pre- and post-
development runoff rates were analyzed using HydroCAD for the 2-and 5-year,24-hour
design storms at the discharge point from the property.The nitrogen export for the
proposed project was calculated using the SNAP as outlined by NCDEQ.
1.2.1 Existing Drainage Conditions
The site area is a completely undeveloped grass field.There is a swale that encircles a dirt
cul-de-sac at the southeastern end of the site.The side drains to this swale and runoff then
continues to drain south until it hits standing water on the adjacent site,which is a
jurisdictional wetland. Since all the site area is directed to the swale at the southeast corner
of the property and will continue to do so in the proposed condition,that point is
considered the Design Point for this analysis.
1.2.2 Proposed Drainage Conditions
This Project proposes an approximately 1.22-acre concrete slab to facilitate a concrete batch
plant,washout for truck cleaning, aggregate storage bins,a 10,000 gallon water tank and
approximately 400 square feet batch house.Though grade changes in some areas will be
required, much of the existing drainage pattern will remain the same in the proposed site
conditions.
Stormwater runoff will generally drain from the northeast corner of the site to the southwest,
while a small portion of the southern portion of the site will drain north. Runoff is collected
by a valley gutter before ultimately draining into a washout.The washout will filter the
stormwater runoff through a series of 4 chambers and weirs to allow sediment to settle.The
water is then stored in a holding tank in the back portion of the washout.The total storage
provided with the washout is approximately 31,800 gallons. From the holding tank, clean
water is pumped into a proprietary filtration system called Hydro Carbonic Purification (HCP).
The HCP sits directly adjacent to the washout in a 20'x8' Conex box and can hold 1,000
gallons of stormwater.The HCP takes the stormwater and filters it into potable water before
it is then pumped into the 10,000 gallon water tank on site.This water is then used in the
creation of concrete, essentially creating a net zero runoff scenario in most rain events.The
total storage on site is approximately 0.13 acre-feet,which is the equivalent of the 1.5"
storm.When the washout, HCP,and water tanks are filled to capacity,two (2) 6-inch orifices
on the clean water storage chamber are activated and the excess stormwater spills into the
proposed infiltration basin to serve as a Stormwater Control Measure (SCM).The SCM will
detain flow for all storms up and including the 5-year design storm.Storm events in excess
of the 5-year design storm will be discharged through a 60'wide riprap lined weir on the
north side of the infiltration basin and spill into an existing channel that routes stormwater
2

Stormwater Impact Analysis
to the west.As a result of this design, and the required storage volume,there will be no
runoff except in storm events that exceed the S-year storm with this project.Although there
is on-site storage for the 1.5"storm, calculations have been run as if the recycled Stormwater
system is not in place to remain conservative. See Peak Flow Comparison table below.
Peak Flow Comparison
Design Point 1
Return Period Pre Post
Difference
(cfs) (cfs)
2-Yr 4.05 -100%
5-Yr 6.82 -100%
The SCM will also capture the first 1.5"of runoff from the site and infiltrate in approximately
10 hours. Per Currituck County Stormwater Manual regulations,the 5-yr flow at the design is
being detained on site and infiltrated,therefore less than the 2-yr flow assuming a wooded
condition (4.05 cfs)to meet water quantity requirements.Additionally, by incorporating this
water quality management and designing the SCM per the NCDEQ Stormwater Design
Manual, nutrient offset credit has been achieved. See Appendix A for Nutrient Management
Strategy Watershed—Nutrient Offset Credit Reporting Form.
1.3 Erosion Control
Construction will follow the erosion and sediment control plans submitted for approval to
NCDEQ. These plans are to be approved during the Site Permit Review and contain
approved erosion control practices and devices commonly used throughout the State of
North Carolina and the Currituck County. The construction sequence will follow the erosion
and sediment control plans provided to NCDEQ.
1.4 Operation and Maintenance
A draft of the proposed Operation and Maintenance Manual and Budget for the SCM is
included in Appendix A of this document. Upon approval of these manuals,the Owner will
provide maintenance of the SCMs in accordance with the approved manuals.
1.5 Conclusions
With the inclusion of the proposed on-site SCM,the stormwater management design is in
compliance with state and local regulations.The Project does not discharge any peak runoff
for the 2 and 5-year design storms per Currituck County Stormwater Manual guidelines and
with the purchase of mitigation credits also meets water quality requirements for nitrogen
loading.
3

Stormwater Impact Analysis
Figures

Stormwater Impact Analysis
Appendix A - Supporting Information and
Calculations
Attachments
• Report of Seasonal High Water Table Estimation and Infiltration Testing
• Soil Survey of Wake County Map
• FEMA FIRMette
• NOAA Atlas 14 Rainfall Data
• SCM Design Calculations
• Nitrogen Export Calculation (Apportioning Method)
• HydroCAD Analysis
o Pre-Development Conditions
o Post-Development Conditions
• Stormwater Operation and Maintenance Manual and Budget
i Table of Contents

Stormwater Impact Analysis

DWI
ECS SOUTHEAST, LLP "Setting the Standard for Service"
ter. Geotechnical • Construction Materials • Environmental • Facilities NC Registered Engmeerm9 F.—F.1W6
NC Registered Geologists Firm C 406
SC Re9rslered Engmeenng Firm 3239
September 1, 2022
Mr. Kyle Murray
Chaney Enterprises
2410 Evergreen Road, Suite 201
Gambrills, Maryland 21054
Reference: Report of Seasonal High Water Table Estimation and Infiltration Testing
Concrete Plant—Hines Commerce Drive
Powell's Point, Currituck County, North Carolina
ECS Project No. 49.18319
Dear Mr. Murray:
ECS Southeast, LLP (ECS) recently conducted a seasonal high water table (SHWT) estimation
and infiltration testing within the stormwater control measure (SCM) area(s) at 104 Hines
Commerce Drive in Powell's Point, Currituck County, North Carolina. This letter, with
attachments, is the report of our testing.
Field Testing
On August 29, 2022, ECS conducted an exploration of the subsurface soil and groundwater
conditions, in accordance with the NCDEQ Stormwater Design Manual section A-2, at two
requested locations shown on the attached Boring Location Plan (Figure 1). ECS used GPS
equipment in order to determine the boring locations. The purpose of this exploration was to
obtain subsurface information of the in situ soils for the SCM area(s). ECS explored the
subsurface soil and groundwater conditions by advancing one hand auger boring into the
existing ground surface at each of the requested boring locations. ECS visually classified the
subsurface soils and obtained representative samples of each soil type encountered. ECS also
recorded the SHWT and groundwater elevation observed at the time of the hand auger borings.
The attached Infiltration Testing Form provides a summary of the subsurface conditions
encountered at the hand auger boring locations.
The SHWT and groundwater elevation was estimated at the boring locations below the existing
grade elevation. A summary of the findings are as follows:
Location SHVVT Groundwater
1-1 40 inches 50 inches
1-2 42 inches 52 inches
ECS has conducted two infiltration tests utilizing a compact constant head permeameter near
the hand auger borings in order to estimate the infiltration rate for the subsurface soils.
Infiltration tests are typically conducted at two feet above the SHWT or in the most restrictive
soil horizon Tests in clayey conditions are conducted for durations of up to 30 minutes. If a
more precise hydraulic conductivity value is desired for these locations, then ECS recommends
collecting samples and performing laboratory permeability testing.
ECS Capitol Services..PLLC • ECS Florida.LLC • ECS Mid-Atlantic,LLC • ECS Midwest,LLC • ECS Southeast,LLP • ECS Texas. LLP
www.ecslimited.com

Report of SHINT Estimation and Infiltration Testing
Concrete Plant—Hines Commerce Drive
Powell's Point, Currituck County, North Carolina
ECS Project No.49.18319
September 1, 2022
Field Test Results
Below is a summary of the infiltration test results:
Location Description Depth Inches/
hour
I-1 Brown/gray fine SAND wit silt 12 inches 1.03
I-1A Tan/orange/gray sandy CLAY Winches 0.008
1-2 Tan/orangelgray clayey SAND Winches 0.014
Infiltration rates and SHWT may vary within the proposed site due to changes in elevation, soil
classification and subsurface conditions. ECS recommends that a licensed surveyor provide
the elevations of the boring locations.
Closure
ECS's analysis of the site has been based on our understanding of the site, the project
information provided to us, and the data obtained during our exploration. If the project
information provided to us is changed, please contact us so that our recommendations can be
reviewed and appropriate revisions provided, if necessary. The discovery of any site or
subsurface conditions during construction which deviate from the data outlined in this
exploration should be reported to us for our review, analysis and revision of our
recommendations, if necessary. The assessment of site environmental conditions for the
presence of pollutants in the soil and groundwater of the site is beyond the scope of this
geotechnical exploration.
ECS appreciates the opportunity to provide our services to you on this project. If you have any
questions concerning this report or this project, please contact us.
Respectfully,
ECS SOUTHEAST, LLP
K. Brooks Wall W. Brandon Fulton, PSC, PWS, LSS
Project Manager Environmental Department Manager
bwall(ai)ecslimited.com bfulton(ccDecslimited.com
910-686-9114 704-525-5152
Attachments: Figure 1 - Boring Location Plan
Infiltration Testing Form
GBA Document
2

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APPROXIMATE BORING LOCATIONS
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Concrete Plant— Hines Commerce Figure 1—Boring Location Plan
Powell's Point, Currituck County,
North Carolina
Provided by: Google Earth
ECS Project#49.118319
August 29, 2022
KBW �TM

Infiltration Testing Form
Concrete Plant — Hines Commerce Drive
Powell's Point, Currituck County, North Carolina
ECS Project No. 49.18319
August 29, 2022
Location Depth USCS Soil Description
1-1 0-12" SM- Brown/gray fine SAND w/-silt-- - -
12"-24" SM Tan fine SAND w/ clay
24"-42" CL Tan/orange/gray sandy CLAY
42"-66" SC Tan/orange/gray clayey SAND
Seasonal High Water Table was estimated to be at 40 inches below the
existing grade elevation.
Groundwater was observed to be at 50 inches below the existing grade
elevation.
Test 1-1 was conducted at 12 inches below existing grade elevation
Infiltration Rate: 1.03 inches per hour
Test I-1A was conducted at 36 inches below existing grade elevation
Infiltration Rate: 0.008 inches per hour
Location Depth USCS Soil Description
1-2 0-12" SM Brown/gray fine SAND w/ silt
12"-24" SM Tan fine SAND w/ clay
24"-66" SC Tan/orange/gray clayey SAND
Seasonal High Water Table was estimated to be at 42 inches below the
existing grade elevation.
Groundwater was observed to be at 52 inches below the existing grade
elevation.
Test 1-2 was conducted at 36 inches below existing grade elevation
Infiltration Rate: 0.014 inches per hour

po I Infopmation III t
Geolechnicol-Engineeping Report
Subsurface problems are a principal cause of construction delays, ost overruns, claims, and . .
While you cannot eliminate all such risks, you can manage them. The following information is provided to help.
The Geoprofessional Business Association (GBA) Typical changes that could erode the reliability of this report include
has prepared this advisory to help you—assumedly those that affect:
a client representative—interpret and apply this • the site's size or shape;
geotechnical-engineering report as effectively the function of the proposed structure,as when it's
as possible.In that way, clients can benefit from changed from a parking garage to an office building,or
a lowered exposure to the subsurface problems the e e anon,configuration,
Lion,to ation,refrigerated warehouse;
that,for decades, have been a principal cause of the elevation,proposed
structure,
orientation,or
P P weight of the proposed stnucture;
construction delays,cost overruns, claims, and the composition of the design team;or
disputes. If you have questions or want more . project ownership.
information about any of the issues discussed below,
contact your GBA-member geotechnical engineer. As a general rule,always inform your geotechnical engineer of project
Active involvement in the Geoprofessional Business changes-even minor ones-and request an assessment of their
Association exposes geotechnical engineers to a impact.The geotechnical engineer who prepared this report cannot accept
wide array of risk-confrontation techniques that can responsibility or liabilityfor problems that arise because the geotechnical
be of genuine benefit for everyone involved with a engineer was not informed about developments the engineer otherwise
construction project. would have considered.
This Report May Not Be Reliable
Geotechnical-Engineering Services Are Performed for Do not rely on this report if your geotechnical engineer prepared it:
Specific Purposes, Persons, and Projects . for a different client,
Geotechnical engineers structure their services to meet the specific for a different project;
needs of their clients.A geotechnical-engineering study conducted for a different site(that may or may not include all or a
for a given civil engineer will not likely meet the needs of a civil- portion of the original site);or
works constructor or even a different civil engineer.Because each before important events occurred at the site or adjacent
geotechnical-engineering study is unique,each geotechnical- to it;e.g.,man-made events Wee construction or
engineering report is unique,prepared solely for the client Those who environmental remediation,or natural events like floods,
rely on a geotechnical-engineering report prepared for a different client droughts,earthquakes,or groundwater fluctuations.
can be seriously misled.No one except authorized client representatives
should rely on this geotechnical-engineering report without first Note,too,that it could be unwise to rely on a geotechnical-engineering
conferring with the geotechnical engineer who prepared it.And no one report whose reliability may have been affected by the passage of time,
-not even you-should apply this report for any purpose or project except because of factors like changed subsurface conditions;new or modified
the one originally contemplated. codes,standards,or regulations;or new techniques or tools.If your
geotechnical engineer has not indicated an apply-by"date on the report,
Read this Report in Full ask what it should be,and,in general,if you are the least bit uncertain
Costly problems have occurred because those relying on a geotechnical- about the continued reliability of this report,contact your geotechnical
engineering report did not read it in its entirety.Do not rely on an engineer before applying it A minor amount of additional testing or
executive summary.Do not read selected elements only.Read this report analysis-if any is required at all-could prevent major problems.
in full.
Most of the "Findings" Related in This Report Are
You Need to Inform Your Geotechnical Engineer Professional Opinions
about Change Before construction begins,geotechnical engineers explore a sites
Your geotechnical engineer considered unique,project-specific factors subsurface through various sampling and testing procedures.
when designing the study behind this report and developing the Geotechnical engineers can observe actual subsurface conditions only at
confirmation-dependent recommendations the report conveys.A few those specie locations where sampling and testing were performed.The
typical factors include: data derived from that sampling and testing were reviewed by your
• the client's goals,objectives,budget,schedule,and geotechnical engineer,who then applied professional judgment to
risk-management preferences; form opinions about subsurface conditions throughout the site.Actual
• the general nature of the structure involved,its size, sitewide-subsurface conditions may differ-maybe significantly-from
configuration,and performance criteria; those indicated in this report.Confront that risk by retaining your
• the structure's location and orientation on the site;and geotechnical engineer to serve on the design team from project start to
• other planned or existing site improvements,such as project finish,so the individual can provide informed guidance quickly,
retaining walls,access roads,parking lots,and whenever needed.
underground utilities.

This Report's Recommendations Are perform their own studies if they want to,and be sure to allow enough
Confirmation-Dependent time to permit them to do so.Only then might you be in a position
The recommendations included in this report-including any options to give constructors the information available to you,while requiring
or alternatives-are confirmation-dependent.In other words,they are them to at least share some of the financial responsibilities stemming
not final,because the geotechnical engineer who developed them relied from unanticipated conditions.Conducting prebid and preconstruction
heavily on judgment and opinion to do so.Your geotechnical engineer conferences can also be valuable in this respect.
can finalize the recommendations only after observing actual subsurface
conditions revealed during construction.If through observation your Read Responsibility Provisions Closely
geotechnical engineer confirms that the conditions assumed to exist Some client representatives,design professionals,and constructors do
actually do exist,the recommendations can be relied upon,assuming not realize that geotechnical engineering is far less exact than other
no other changes have occurred.The geotechnical engineer who prepared engineering disciplines.That lack of understanding has nurtured
this report cannot assume responsibility or liability far confirmation- unrealistic expectations that have resulted in disappointments,delays,
dependent recommendations if you fail to retain that engineer to perform cost overruns,claims,and disputes.To confront that risk,geotechnical
construction observation. engineers commonly include explanatory provisions in their reports.
Sometimes labeled"limitations;many of these provisions indicate
This Report Could Be Misinterpreted where geotechnical engineers'responsibilities begin and end,to help
Other design professionals'misinterpretation of geotechnical- others recognize their own responsibilities and risks.Read these
engineering reports has resulted in costly problems.Confront that risk provisions closely.Ask questions.Your geotechnical engineer should
by having your geotechnical engineer serve as a full-time member of the respond fully and frankly.
design team,to:
• confer with other design-team members, Geoenvironmental Concerns Are Not Covered
• help develop specifications, The personnel,equipment,and techniques used to perform an
• review pertinent elements of other design professionali environmental study-e.g.,a"phase-one"or"phase-two environmental
plans and specifications,and site assessment-differ significantly from those used to perform
• be on hand quickly whenever geotechnical-engineering a geotechnical-engineering study.For that reason,a geotechnical-
guidance is needed, engineering report does not usually relate any environmental findings,
conclusions,or recommendations;e.g.,about the likelihood of
You should also confront the risk of constructors misinterpreting this encountering underground storage tanks or regulated contaminants.
report.Do so by retaining your geotechnical engineer to participate in Unanticipated subsurface environmental problems have led to project
prebid and preconstruction conferences and to perform construction failures.If you have not yet obtained your own environmental
observation. information,ask your geotechnical consultant for risk-management
guidance.As a general rule,do not rely on an environmental report
Give Constructors a Complete Report and Guidance prepared for a different client,site,or project,or that is more than six
Some owners and design professionals mistakenly believe they can shift months old.
unanticipated-subsurface-conditions liability to constructors by limiting
the information they provide for bid preparation.To help prevent Obtain Professional Assistance to Deal with Moisture
the costly,contentious problems this practice has caused,include the Infiltration and Mold
complete geotechnical-engineering report,along with any attachments While your geotechnical engineer may have addressed groundwater,
or appendices,with your contract documents,but be certain to note water infiltration,or similar issues in this report,none of the engineer's
conspicuously that you've included the material for informational services were designed,conducted,or intended to prevent uncontrolled
purposes only.To avoid misunderstanding,you may also want to note migration of moisture-including water vapor-from the soil through
that"informational purposes"means constructors have no right to rely building slabs and walls and into the building interior,where it can
on the interpretations,opinions,conclusions,or recommendations in cause mold growth and material-performance deficiencies.Accordingly,
the report,but they may rely on the factual data relative to the specific proper implementation of the geotechnical engineer's recommendations
times,locations,and depths/elevations referenced. Be certain that will not of itself be sufficient to prevent moisture infiltration.Confront
constructors know they may learn about specific project requirements, the risk of moisture infiltration by including building-envelope or mold
including options selected from the report,only from the design specialists on the design team.Geotechnical engineers are not building-
drawings and specifications.Remind constructors that they may envelope or mold specialists.
GEOPROFESSIONAL
BUSINESS
SEA ASSOCIATION
Telephone:[phone]
e-mail:[e-mail] www.geoprofessional.org
Copyright 2016 by Geoprnfessional Business Association(GBA).Duplication,reproduction,or copying of this document,in whole or in part,by any means whatsoever,is strictly
prohibited,except with GBA's specific written permission.Excerpting,quoting,or otherwise extracting wording from this document is permitted only with the express written permission
of GBA,and only for purposes of scholarly research or book review.Only members of GBA may use this document or its wording as a complement to or as an element of a report of any
kind.Any other firm,individual,or other entity that w uses this document without being a GBA member could be committing negligent

USDA United States A product of the National Custom Soil Resource
Department of Cooperative Soil Survey,
Agriculture a joint effort of the United Report for
States Department of
N RCS Agriculture and other C u rri to c k County
Federal agencies, State
Natural agencies including the North Carolina
Resources Agricultural Experiment
Conservation Stations, and local
Service participants
August 19, 2022

Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation,waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http:/Mww.nres.usda.govhvps/
portal/nres/main/soils/healthy and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nres)or your NRCS State Soil
Scientist(http://www.nres.usda.govtwps/portal/nres/detail/soils/contactus/?
cid=nres142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields.A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service(NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey,the site for official soil survey information.
The U.S. Department of Agriculture(USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
2

alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at(202)720-2600 (voice
and TDD).To file a complaint of discrimination,write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call [phone] (voice) or(202)720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3

Content
Preface....................................................................................................................2
How Soil Surveys Are Made..................................................................................5
SoilMap.................................................................................................................. 6
SoilMap................................................................................................................9
Legend................................................................................................................10
MapUnit Legend................................................................................................ 11
MapUnit Descriptions.........................................................................................11
Currituck County, North Carolina.................................................................... 13
Ds—Dragston loamy fine sand....................................................................13
Mu—Munden loamy sand........................................................................... 14
Soil Information for All Uses...............................................................................16
Soil Properties and Qualities..............................................................................16
Soil Qualities and Features.............................................................................16
HydrologicSoil Group................................................................................. 16
References............................................................................................................21
4

How Soil Surveys Are- Made ---
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area.They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage;the kinds of crops and
native plants; and the kinds of bedrock.They observed and described many soil
profiles.A soil profile is the sequence of natural layers, or horizons, in a soil.The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock.The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas(MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses(USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed.Thus, during mapping,this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless,these observations, supplemented
by an understanding of the soil-vegetation-landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied.They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils.After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes(units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits.The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy,the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile.After the soil
5

Custom Soil Resource Report
scientists classified and named the soils in the survey area,they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous-areas,in-predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data.The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil-landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil-landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components.The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field-observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
6

Custom Soil Resource Report
identified each as a specific map unit.Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
7

Soil Map The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map.Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
8

Custom Soil Resource Report
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Custom Soil Resource Report
MAP LEGEND MAP INFORMATION
Area of Interest(AOI) Spoil Area The soil surveys that comprise your AOI were mapped at
O Area of Interest(AOI) Stony Spot 1'.20,000.
Q Y
Soils Very Stony Spot
U Soil Map Unit Polygons py blaming:Soil Map may not be valid at this scale.
Y Wet Spot
,.,�. Soil Map Unit Lines Enlargement of maps beyond the scale of mapping can cause
Soil Map Unit Points
r1 Other misunderstanding of the detail of mapping and accuracy of soil
.. Special Line Features line placement.The maps do not show the small areas of
Special Point Features contrasting soils that could have been shown at a more detailed
V Blowout Water Features scale.
Streams and Canals
Bono,Pit
Transportation Please rely on the bar scale on each map sheet for map
Clay Spot t-I-t Rails measurements.
0 Closed Depression N Interstate Highways
Gravel Pit Source of Map: Natural Resources Conservation Service
G
x US Routes Web Soil Survey URL
Gravelly Spot Major Roads Coordinate System: Web Mercator(EPSG:3857)
Landfill Local Roads Maps from the Web Soil Survey are based on the Web Mercator
Lava Flow Background projection,which preserves direction and shape but distorts
A. distance and area.A projection that preserves area,such as the
46 Marsh or swamp . Aenal Photography Albers equal-area conic projection,should be used if more
Mine or Quarry accurate calculations of distance or area are required.
O Miscellaneous Water This product is generated from the USDA-NRCS certified data as
® Perennial Water of the version date(s)listed below.
W Rock Outcrop Soil Survey Area: Currituck County,North Carolina
+ Saline Spot Survey Area Data: Version 21,Jan 21,2022
Sandy Spot Soil map units are labeled(as space allows)for map scales
,s, Severely Eroded Spot 1:50,000 or larger.
0 Sinkhole Date(s)aerial images were photographed: Dec 31,2009—Oct
�y Slide or Slip 19,2017
Sodic Spot The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps.As a result,some minor
shifting of map unit boundaries may be evident.
10

Custom Soil Resource Report
Map Unit Legend
.Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
'Ds Dragston loamy fine sand —3.6 96.8%—
i
Mu 'Munden loamy sand 0.1 1 3.2%
Totals for Area of Interest 3.81 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area.The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas.A map unit is identified and named
according to the taxonomic classification of the dominant soils.Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however,the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus,the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently,every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components.They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management.These are called contrasting, or dissimilar, components.They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each.A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data.The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into Iandforms or
Iandform segments that have similar use and management requirements.The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
11

Custom Soil Resource Report
onsite investigation is needed to define and locate the sails and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer,slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series.The name of a soil phase
commonly indicates a feature that affects use or management. For example,Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas.Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately.The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform.An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them.Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
12

Custom Soil Resource Report
Currituck County, North Carolina
Ds—Dragston loamy fine sand
Map Unit Setting
National map unit symbol: 3mm
Elevation: 0 to 20 feet
Mean annual precipitation: 42 to 58 inches
Mean annual air temperature: 61 to 64 degrees F
Frost-free period: 190 to 270 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Dragston, drained, and similar soils:45 percent
Dragston, undrained, and similar soils:40 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Dragston, Drained
Setting
Landform:Marine terraces
Down-slope shape:Linear
Across-slope shape: Linear
Parent material:Sandy and loamy fluviomarine deposits and/or marine deposits
Typical profile
A-0 to 6 inches: loamy fine sand
E-6 to 10 inches: loamy fine sand
Bt- 10 to 42 inches: sandy loam
2Cg-42 to 80 inches: loamy sand
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Somewhat poorly drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water(Ksat): High (1.98 to 5.95
in/hr)
Depth to water table:About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding: None
Available water supply, 0 to 60 inches: Moderate (about 6.3 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: A/D
Hydric soil rating. No
Description of Dragston, Undrained
Setting
Landform:Marine terraces
Down-slope shape:Linear
Across-slope shape:Linear
13

Custom Soil Resource Report
Parent material., Sandy and loamy fluviomarine deposits and/or marine deposits
Typical profile
A -0 to 6 inches: loamy fine sand
E- 6 to 10 inches: loamy fine sand
Bt- 10 to 42 inches: sandy loam
2Cg-42 to 80 inches: loamy sand
Properties and qualities
Slope:0 to 2 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Somewhat poorly drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water(Ksat): High (1.98 to 5.95
in/hr)
Depth to water table:About 12 to 30 inches
Frequency of flooding: None
Frequency of ponding., None
Available water supply, 0 to 60 inches: Moderate (about 6.3 inches)
'Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 3w
Hydrologic Soil Group: A/D
Hydric soil rating: No
Minor Components
Portsmouth, undrained
Percent of map unit:3 percent
Landform: Flats on marine terraces, depressions on marine terraces
Down-slope shape: Linear
Across-slope shape: Linear
Hydnc soil rating: Yes
Nimmo, undrained
Percent of map unit:2 percent
Landform:Depressions on marine terraces,flats on marine terraces
Down-slope shape: Concave
Across-slope shape: Linear
Hyddc soil rating: Yes
Mu—Munden loamy sand
Map Unit Setting
National map unit symbol: 3rnr
Elevation: 0 to 20 feet
Mean annual precipitation: 42 to 58 inches
Mean annual air temperature: 61 to 64 degrees F
Frost-free period., 190 to 270 days
14

Custom Soil Resource Report
Farmland classification: Farmland of statewide importance
Map Unit Composition
Munden and similar soils:85 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Munden____
Setting
Landform: Ridges on marine terraces
Down-slope shape: Linear
Across-slope shape: Linear
Parent material.,Sandy and loamy fluviomarine deposits and/or marine deposits
Typical profile
A -0 to 9 inches., loamy sand
Bt-9 to 37 inches: fine sandy loam
C-37 to 72 inches: loamy fine sand
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Moderately well drained
Runoff class: Very low
Capacity of the most limiting layer to transmit water(Ksat):Moderately high to high
(0.57 to 5.95 in/hr)
Depth to water table:About 18 to 30 inches
Frequency of flooding., None
Frequency of ponding.None
Available water supply, 0 to 60 inches: Low(about 5.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: B
Hydric soil rating: No
Minor Components
Nimmo, undrained
Percent of map unit., 5 percent
Landform: Depressions on marine terraces, flats on marine terraces
Down-slope shape: Concave
Across-slope shape:Linear
Hydric soil rating: Yes
15

Soil Information for -All -Uses -
Soil Properties and Qualities
The Soil Properties and Qualities section includes various soil properties and
qualities displayed as thematic maps with a summary table for the soil map units in
the selected area of interest.A single value or rating for each map unit is generated
by aggregating the interpretive ratings of individual map unit components.This
aggregation process is defined for each property or quality.
Soil Qualities and Features
Soil qualities are behavior and performance attributes that are not directly
measured, but are inferred from observations of dynamic conditions and from soil
properties. Example soil qualities include natural drainage,and frost action. Soil
features are attributes that are not directly part of the soil. Example soil features
include slope and depth to restrictive layer.These features can greatly impact the
use and management of the soil.
Hydrologic Soil Group
Hydrologic soil groups are based on estimates of runoff potential. Soils are
assigned to one of four groups according to the rate of water infiltration when the
soils are not protected by vegetation, are thoroughly wet, and receive precipitation
from long-duration storms.
The soils in the United States are assigned to four groups(A, B, C, and D) and
three dual classes(A/D, BID, and C/D). The groups are defined as follows:
Group A. Soils having a high infiltration rate(low runoff potential)when thoroughly
wet.These consist mainly of deep,well drained to excessively drained sands or
gravelly sands.These soils have a high rate of water transmission.
Group B. Soils having a moderate infiltration rate when thoroughly wet. These
consist chiefly of moderately deep or deep, moderately well drained or well drained
soils that have moderately fine texture to moderately coarse texture.These soils
have a moderate rate of water transmission.
16

Custom Soil Resource Report
Group C. Soils having a slow infiltration rate when thoroughly wet.These consist
chiefly of soils having a layer that impedes the downward movement of water or
soils of moderately fine texture or fine texture. These soils have a slow rate of water
transmission.
Group D. Soils having a very slow infiltration rate (high runoff potential)when
thoroughly wet.These consist chiefly of clays that have a high shrink-swell
potential, soils that have a high water table, soils that have a claypan orclay layer-at-
or near the surface, and soils that are shallow over nearly impervious material.
These soils have a very slow rate of water transmission.
If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is
for drained areas and the second is for undrained areas. Only the soils that in their
natural condition are in group D are assigned to dual classes.
17

Custom Soil Resource Report
Map—Hydrologic Soil Group
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18

Custom Sail Resource Report
i
MAP LEGEND MAP INFORMATION
Area of Interest(ACI) ® C The soil surveys that comprise your AOI were mapped at
n Area of Interest(ACI) CID1:20,000.
Soils ■
Soil Rating polygons D Warning:Soil Map may not be valid at this scale.
I A 13 Not rated or not available
Enlargement of maps beyond the scale of mapping can cause
® AID Water Features misunderstanding of the detail of mapping and accuracy of soil
Streams and Canals line placement.The maps do not show the small areas of
® B Transportation contrasting soils that could have been shown at a more detailed
BID 1-M Rails scale.
C �y Interstate Highways
Please rely on the bar scale on each map sheet for map
0 CID yy US Routes measurements.
0 D Major Roads
Not rated or not available Source of Map: Natural Resources Conservation Service
Local Roads Web Soil Survey URL
Soil Rating Linea Background Coordinate System: Web Mercator(EPSG:3857)
A Aerial Photography
Maps from the Web Soil Survey are based on the Web Mercator
.y AID projection,which preserves direction and shape but distorts
N B distance and area.A projection that preserves area,such as the
Albers equal-area conic projection,should be used if more
,y B/D accurate calculations of distance or area are required.
.y C
This product is generated from the USDA-NRCS certified data as
.v CID of the version date(s)listed below.
V D
Soil Survey Area: Currituck County,North Carolina
Not rated or not available Survey Area Data: Version 21,Jan 21,2022
Soil Rating Points
® A Soil map units are labeled(as space allows)for map scales
1:50,000 or larger.
® AID
R Dates)aerial images were photographed: Dec 31,2009- Oct
19,2017
BID
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps.As a result,some minor
shifting of map unit boundaries may be evident.
19

Custom Soil Resource Report
Table—Hydrologic Soil Group
.Map unit symbol Map unitname Rating Acres in AOI - Percent of AOI
Ds Dragston loamy fine AID 3.61 96.8%
sand
Mu Munden loamy sand B 0.1 3.2%
Totals for Area of Interest 3.8, 100.0%
Rating Options—Hydrologic Soil Group
Aggregation Method. Dominant Condition
Component Percent Cutoff.,None Specified
Tie-break Rule:Higher
20

References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials(ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/
nres/detail/national/soi Is/?cid=nres 142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nres.usda.gov/wps/portal/nres/detail/national/soils/?cid=nresl42p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nres.u sda.gov/wps/portal/nres/detai I/national/soils/?cid=nres 142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/
home/?cid=nres 142 p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook, http://www.nres.usda.govtwps/portal/nres/
detail/national4andu se/rangepasture/?cid=stelprdb 1043084
21

Custom Soil Resource Report
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 43041. http://www.nres.usda.govtwps/portal/
nres/detai I/soil s/scientists/?cid=nres142 p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://Www.nres.usda.govAvps/portal/nres/detail/national/soils/?
cid=nres142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/lnternet/FSE—DOCUMENTS/nrcsl42p2_052290.pdf
22

National Flood Hazard Layer FIRMette >7 ,TMA Legend
ILI 49 5¢W iL l j I Po SEE FIS REPORT FOR C TAILED LEGEND AND INotX MAP FOR FIRNI PANEL LAYOUT
'J Without Base Flood Elevation(BFE)
t♦ I Zone A,V A99
/ SPECIAL FLOOD With BFE or Depth Zone AE Ap,AN,vE.AN
eiilll� f •{t HAZARD AREAS Regulatory Flootlway
qft 0.2%Annual Chance od Hazard,Areas
of 1%annual chance flood with average
. ,° �� • depth less than one foot or with drainage
w/ areas of less than one square mile zone x
r"' .• �� !¢ a Future ol %Annual
ce Flood
Chanoodd Hazaons rd zone
{ S` Area with Reduced Flood Risk due to
OTHER AREAS OF r' Levee.See Notes.zone
r. s FLOOD HAZARD Area with Flood Risk due to Leveezon•o
•�- *. ! No SCREEN Area of Minimal Flood Hazard zone x
r Q Effective LOMRs
• iieeeiffigiiiiii,— .end OTHER AREAS Area of Undetermined Flood Hazard zoned
~ GENERAL '--' Channel,Culvert,or Storm Sewer
' 4~ STRUCTURES I i i i i i i Levee,Dike,or Floodwall
Crass Sections with 1%Annual Chance
ns Water Surface Elevation
CURRITUCKCOiJFIT.Y Ak} A 1'4 N!1r P 1A1 FCC70D HA7JIRD --- Coastal Transact
—Nr— Base Flood Elevation Line(BFE)
3700 8 N Limit of Study
----JUfledICtIGn Boundary
—--- Coastal Transact Baseline
OTHER _ Profile Baseline
FEATURES Hydrographic Feature
Digital Data Available H
No Digital Data Available
n MAP PANELS Unmapped
o
? The pin displayed h the map Is a approximate
111 g point authoritative
by the user and does not represent
° an authod[a[Ive property location.
This map complies with FEMA's standards for the use of
digital flood maps If It is not Vold as described below.
The basemap shown complies with FEMA's basemap
•` accuracy standards
The flood hazard information is derived directly from the
authoritative NFHL web services provided by FEMA.This map
was exported on 9/20/2022 at 2:16 PM and does not
reflect changes or amendments subsequent to this date and
r• time.The NFHL and effective Information may change or
become Superseded by new data over time.
�d, I'�� • This map image is void If the one or more of the following map
elements do not appear:basemap Imagery,good zone labels,
Gew-
legend,scale bar,map creation date,community Identifiers,
FIRM panel number,and FIRM effective date,Map Images for
Feet 75"49'20"If 36'6'34"N unmapped and unmodernized areas cannot be used for
0 250 500 1,000 1,500 2,000 1:6,000 regulatory purposes.
Basemap:USGS National Map:Orthoimagery:Data refreshed October,2020

9121/22,12:38 PM Precipitation Frequency Data Server
NOAA Atlas 14,Volume 2,Version 3
Location name:POWU Point,North Carolina, ,✓
Y USA* S
EN Latitude: 36.1141°,Longitude:-75.8314° T7`
Elevation:9.77 ft-
'source:ESRI Maps
••source:USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M.Bonnie,D.Martin,B.Lin,T.Parzybok,MNekta,and D.Riley
NOAA,National Weather Service,Silver Spring,Maryland
PF tabular I PF gEgphical I Mgps & aerials
PF tabular
PDS-based point precipitation frequency estimates with 90%confidence intervals(in inches)'
Average recurrence interval(years)
Duration j so 1 2 5 10 25 100 200 500 1000
5-min 0.449 0.525 0.596 0.682 0.769 0.845 -915 0.994 1.07 1.15
(0.409-0.495) (0.478-0.577) (0.545.0.657) (0.619-0.749) (0.695-0.842) (0.760-0.925) 0.821-1.00 (0.877-1.08) (0.945-1.17)Ill.01-1.26)
10-min 0 0.717 0.840 0.958 1,09 1.23 1.36 1.46 1.56 1.69 1.81
( .653-0.790) (0.764-0.924) (0.873-1.05) 0.990-1.20) 1.11-1.34) 11 (1.21-1.4 1.30-1.59) (1.39-1.71) (1.49-1.85) (1.59-1.99)
15-min 0.897 1.06 1.21 1.38 1.55 1.70 1.84 1.97 2.13 2.27 )
(0.816-0,988) (0.961-1.16) (1.10-1.33) 1 (1.25-1.52) 1.40-1.70 11 (1.5}1.8 (1.65-201) (1.75-215) (1AB-233) ,(199-2.49
30-r11in 1.23 1A8 1.72 2.00 2.30 2.57 2.82 3.06 3.39 3.68
(1.12-1.36) 1 (1.3}1.60) (1.57-1.89) (1.82-2.19) 1 (2.08-2.52) 1 (2,31-2.81) (2.52-3.08) (2.73-3 35)'. (2 99-3 71) ,(3 224.04)
F3.48 60-min 1.53 1.83 2.21 2.60 3.07
3.88 ( 4.30 4.86 ) ( 5.37 )
(1.40-1.89) (1.67-2.01) (2.01-2.42) (2.36.2.86) 3.2.7736) (3.1}3.81) 3.48.4.25 3.8}4.70 4,29-5.33 4.71-5.90
2-hr 1.76 2.11 2.60 3.13 ) ( 3.76 ) ( 4,35 ) ( 4.93 ( 6.66 6.40 7.17
(L59-1.95 (t91-2.33) (2.35.2.87) (2.82-3.44 3.38-4.13 3.894J8 4.38-5,40 4.91-6.09) (5.61-7.02) (6.24-7.87)
3-hrIF 1.92 2.30 2.84 3A4 4.19 4.89 5.61 6.39 7.48 8.50 1.73-2.13 (2.08-2-55) (2.57-3.15) (3.10-3.81 3.754.63) (4.35-5.39) (4.97-6.17) (5.62-7.02) (6.50-8.22) (7.32-9.35)
6-hr 2.33 IF 2.79 3.45 4.18 5.10 5.98 6.88 7.87 9.26 7F 1-0.6
(2.11-2.59) (2.52-3.10) (3.11-3.83) 3.764.63 4.565.84 (5.32-6.59) 1(&07-7.57) (6,89-8.64) (8.00-10.2) (9.04-11.6)
12-hr 2.76 3.30 4.10 5.00 6.14 7.25 8.40 9.68 11.5 13.2
(2.49-3.09) (2.97-3.70) (3.694.59 (4.47-5.58 (5.46-6.83 (6-41-8.04) �35-9.30) (8.39-10.7) (9.81-12.7) (11.1-14.7)
24-hr 3.28 4.00 5.17 6.15 7.61 8.86 10.2 11.7 14. ) (0 1s.9 )
(3.03-3.59) (3.694.37) (4,76-5.64) (5.64-6.69) 6.92-8.25 (7.98-9.60 (9.13-11A) 10.4-127) (12.2-15.3 13.6-17.5
2-day 3.82 4.62 5.93 7.06 8.75 10.2 11.9 13.7 16.4 18.8
(3.50-4.18) (4.25-5.0 (5.45-6.49) 1 (6.46-7.71 7.94-9.54 (9.18-11.1) (10.5-12.9) 12.0-15.0 14.2-18.1) 15.9-20.8
3-0ay 4.06 4.91 6.27 7.42 9.12 10.6 12.2 IF 13.9 16.6 19.0
(3.734.43) (4.52-5.37) (5.77-&85) 1 (6.60-8.09) (8.29-9.93) (9.5411.5) 1(10.9-13.2) (12.3-15.2) (14.4-18.2) (16.2-20.9)
4-0ay 4.29 5.20 6.61 F 7.79 9A9 7F 10.9 12.5 F142 F168 F191
(3.974.68) (4.80-5.68) (6 10-7.21) I (7.15-8.48) (8.65-10.3) (9.89-11.9) (11.2-13.6) (12.6-15.4) (14.6-18.4) (16.5-21.1)
7-day 4.96 5.98 7.61 8.78 10.6 12.1 13.7 15.5 18.0 20.7
(4,58-5.40) 5.5}6.52) (6.93-8.17) 1 (8.06-9.53 (9.60-11.5) 1 (11.0-13.1) (12.3-14.9) (13.8-16.9) 1(15.8-19.7) (17.4-22.1)
10-0ay 5.59 6.71 8.31 9.63 11.5 13.1 14.8 66.6 99.1 21.2
(5.21-0.03) 11 (6.24-7.24) (7.72-8.96) 1 (8.93-10.4) 1 (10.6-12.4) 1 (12.0-14.1) (13.4-15.9) (14.11A7.9) (17.0-20.8) (18.6-23.2)
20-0ay 7.50 8.93 10.9 22.5 14.7 66.5 88.5 20.5 23.4 25.7
(7.03-8.02) 8.38-9.56) 10.2A1.6) (11.6-13.3) (13.7-15.7) 11 (15.3-17.7) (17.0-19.8) 18.7-22.0) (21.0-25.2) (22.8-27.8)
30-0ay 9.23 11.0 13.2 15.0 77.4 99.4 21.4 33.5 66. ) (3 88.5
(&69 9.82) (10.3-11.7) (12.4-14.0 (14.1-15.9) (16.}18.5 18.0-20-6 (19.8-22.8) (21.5�25.1) (23.9-28.3 25.7-30-6)
45-0ay 11.4 33.5 66.1 18.3 21.4 23.8 66.4 29.1 32.9 35.9
(10.7-12.1) (12.7-14.3) (15.2-17.2) (17.1-19.4) (19.9-22.7) (22.1-25.3) (24.4-28.1) (26.7-31.i) (29.8-35.3) (32.2-38.7)
60-0ay 13.6 16.1 19.0 21.3 24,5 27,1 29.6 32.2 ) 35.8 ) ( 88.5
(129-144) (15.2-17.0) (17.8-20.11 (20.1-22.6) (23.1-260 (25.}28.6) (27.6-31.4) 29.8-34.3 (32.7-38.2 34.941.3)
1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of partial duration series(PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency estimates
(for a given duration and average recurrence interval)will be greater than the upper bound(or less than the lower bound)is 5%.Estimates at upper
bounds are not checked against probable maximum precipitation(PMP)estmates and may be higher than currently valid PMP values,
Please refer to NOAA Atlas 14 document for more information.
Back to p
PF graphical
https://hdsc.nm.noaa.gov/hdsctpfds/pfdsyrintpage.html?lat=36,1141&Ion=-75.8314&data=depth&units=english&series=pds 1/4

hb- Pond Design
Project Name: Chaney Concrete Batch Plant Project#: 34798.02
City/State: Currituck,NC Date: 2/28/23
SCM#1-Stonvnvater Infiltration Basin Design
Table 1 Infiltration Basin Storage Volume
Incremental Accumulated
Below Normal Contour Contour Contour
Pool Contours Area Volume Volume
&00 20227
8.50 21734 10488 10488
9.00 23269 11249 21737
9.50 24827 12022 33758
10.00 26388 12802 46560
10.25 27343 6716 53276
SCM#1 -Stormwater Infiltration Basin Design
Area Imp.Area Imp.Area
Land Use Acres % Acres
Impervious 1.22 100 1.22
Open Space 1.39 0 0.00
0.00
Totals Z61 1.22
Total%Impervious Surface Area= 46.7 %
Infiltration Basin Dewatering Time
_ VDesign
A 2 * K * T
Where:
A =effective infiltrating area(fit')
Vag = volume of water requiring infiltration (difference between the 10-year post-
development and the 2-year wooded storm events)(f2)
K =hydraulic conductivity of soil(inlhr)
T =dewatering time(days)
A= 20227 ft"
Vd,.,= 0.911 ac-ft-0.307 ac-ft
= 0.604 ac-ft
= 26310 It'
K= 1.03 in/hr
T= 0.650 days
T= 16 hours
Page 1 of 1

Nutrient Management Strategy Watershed - Nutrient Offset Credit Reporting Form
Please complete and submit the following information to the local government permitting your development project
to characterize it and assess the need to purchase nutrient offset credits. Contact and rule implementation
information can be found online at:
http:/Idea.nc.goy/about/divisions/water-resources/planning/nonpoint-source-management/nutrient-offset-
information
PROJECT INFORMATION
Applicant Name: Matt Mader,P.E.
Project Name: Chaney Concrete Batch Plant
Project Address: 104 Hines Commerce Drive
Date: (mm/dd/yyyy) 2/20/2023 Development Land Use Type: Industrial
County: Cuffituck Development Activity Typs:1 Development-New
Pre-Project Built-Upon Area%: 0.00% Project Latitude: 36.11381
Post-Project Built•Upon Area%: 40.04% Project Longitude: 75.83091
WATERSHED INFORMATION
Nutrient Management Watershed: outside NMS watershed N Offsite Threshold Rate(lb/acyr): N/A
Subwaterehed: outside NMS watershed P Offsite Threshold Rate(Ib/aeyr): N/A
Nitrogen Delivery Zone: outside NMS Nitrogen Delivery Factor. 100%
Phosphorus Delivery Zone: outside NMS Phosphorus Delivery Factor. 100%
NUTRIENT OFFSET REQUEST
Nitrogen Load Offset Needs
(A) (B) (C) (C) (E) (F) (G) (H) (L)(Where
Applicable)
Untreated Treated Loading Rate Reduction State Buy Local Gov't
Project Size Offset Delivery
Loading Rate Loading Rate Target Need (ac) Duration(yrs) Factor(%) Down Amount Buy Down
(Ibs/ac/yr) (lbs/ac/yr) (Ibs/ac/yr) (Ibs/aclyr) (Ibs) Amount(Ibs)
B-C D'E'F'G
8.49 1.32 8.49 -7.17 3.0400 30 100% 0.00
Phosphorus Load Offset Needs
(A) (B) (C) (D) (E) (F) (G) (H) (L)(Where
Applicable)
Untreated Treated Load Loading Rate Reduction State Buy Local GoWt
Project Size Offset Delivery
Load Rate Rate Target Need Doom Amount Buy Down
(ac) Duration(yrs) Factor(%)
(Ibs/actyr) (lbs/actyr) (Ibs/actyr) (Ibs/ac/yr) (Ibs) Amount(Ibs)
B-C D`E'F`G
1.14 0.18 1.14 -0.97 3.0400 30 100% 0.00
LOCAL GOVERNMENT AUTHORIZATION
Local Government Name:iCurrituck County
Staff Name: I Phone:
Staff Email: I Date•
Local Government Authorizing Signature:

\\0b\gbI\pco)Vic.-BeachV479802 Cbanry CunituekCounty\tech\Sto mw tepCQWadiGed SWIM
OesignV419802 Chanry_CurnW<k Dktl \
\ PAIRK PI JarIj:lw lkL 011,11FRI,
SMAII FRr W rkCvVk,IIC; IIC
75,
I V(flJu+ t
PpS;N rP.,211[kly " vovl�
UBtr $0 IS,,
PAV.1L IU I n C t 7l Ln0u
der.n, £ i \
.� EXISTING\pRAINAGEAREA
°, TO DESIGMPOINT
CN = 70 (ASSU ED WOODED)
elwlwn[s.Fve4r �v \ �£x
�ol.= 057 A \
r FI . Vol. - 0.307 Ao-k
\
LOT a r I kl r
un6Lnl Nu w4aaw Le�
\ fl t \
x i s4 I I :,A WJb
R I61 S(I FT O =7,8 G
Tc=ZBM
\ \ \
N do rl4P.LY P6
P 45J
r fi [I ILIA 01 9]II37L00Lu \
Ta=PAN
\ ^ UPLI11
me
>y r \
\ \
\ \
r_
F v , ' .m

\\Mb\gb%pra YryiniaBeaah\M79802Chaney_CurtiWQCountygtech\Sto wateACA"oEI(eESWM
Design\M798cUhaney_CurntuN`OAJwg
\ PARCH JA
Il \ F FMLFLI
SMML CAN ri11 P kRll l ES.LC
D i. C P, a
l Ak CI i0 1 1.10flac 101A,
f!,m t u I OTWERL,
tArin1t¢t t1i 1,'011,wc:�o so
�_go-� i
I
f
FLOW P ITN
Tc=50 MIN
\ \\ \ f PROPOSED DRAINAGE
AREA TO INFILTRATION
r BASIN DA= 2.61 AC
Nt,v9 A,F ahrekcr \ f CN = 85
Tc = 5.0 MIN
ob eua var�s9
tngcuionvenowunogw , Q5 = 10.48 CFS
Vol. = 0.721 Ac-ft

34798.02 HydroCAD_TR55_Existing Table of Contents
Prepared by VHB Printed 2/2 812 0 2 3
HydroCAD® 10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC
TABLE OF CONTENTS
Project Reports
1 Routing Diagram
2 Project Notes - -- --- -.
3 Rainfall Events Listing (selected events)
4 Area Listing (all nodes)
5 Soil Listing (all nodes)
6 Ground Covers (all nodes)
2-vr Event
7 Node Listing
8 Subcat EX: Existing

OEX
Existing
Subcat Reach on Link Routing Diagram for 34798.02 HydroCAD TR55_Existing
Prepared by VHB, Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 0 2022 HydroCAD Software Solutions LLC

34798.02 HydroCAD_TR55_Existing
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 2
Project Notes
Defined 6 rainfall events from NC-Currituck OF

34798.02 HydroCAD_TR55_Existing
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 3
Rainfall Events Listing (selected events)
Event# Event Storm Type Curve Mode Duration B/B Depth AMC
Name (hours) (inches)
1 2-yr Type III 24-hr - Default 24:00--l----4.00-2

34798.02 HydroCAD_TR55_Existing
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 4
Area Listing (all nodes)
Area CN Description
(acres) (subcatchment-numbers)
3.040 70 Woods, Good, HSG C (EX) --' --
3.040 70 TOTAL AREA

34798.02 HydroCAD_TR55_Existing
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Paae 5
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000 HSG A
0.000 HSG B
3.040 HSG C EX
0.000 HSG D
0.000 Other
3.040 TOTAL AREA

34798.02 HydroCAD_TR55_Existing
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 6
Ground Covers (all nodes)
HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment
(acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers
0.000 0.000 3.040- 0:000-- --0.000 ---3:040—Woods,-Good-EX —
0.000 0.000 3.040 0.000 0.000 3.040 TOTAL AREA

34798.02 HydroCAD_TR55_Existing Type ///24-hr 2-yrRainfall=4.00"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 7
Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method
SubcatchmentEX: Existing Runoff Area=3.040 ac 0.00% Impervious Runoff Depth>1.21"
Tc=8.4 min CN=70 Runoff=4.05 cfs 0.307 of
Total Runoff Area= 3.040 ac Runoff Volume = 0.307 of Average Runoff Depth = 1.21"
100.00% Pervious = 3.040 ac 0.00% Impervious =0.000 ac

34798.02 HydroCAD_TR55_Existing Type H/ 24-hr 2-yrRainfall=4.00"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment EX: Existing
Runoff = 4.05 cfs @ 12.13 hrs, Volume= 0.307 af, Depth> 1.21"
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs
Type III 24-hr 2-yr Rainfall=4.00"
Area (ac) CN Description
3.040 70 Woods, Good, HSG C
3.040 70 100.00% Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
7.8 Direct Entry, OLF
0.6 Direct Entry, SCF
8.4 0 Total
Subcatchment EX: Existing
Hydrograph
■RunoR
4 ds
4 Type III 24-hr
L
ainfall=4.00"
ea=3.040 ac
3 me=0.307 of
Depth>1.21"
2 Tc=8.4 min
CN=70
0 . .
5 6 7 8 9 10 11 12 13 14 15 16 17 ,8 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Table of Contents
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC
TABLE OF CONTENTS
Project Reports
1 Routing Diagram
2 Project Notes — ----- -
3 Rainfall Events Listing (selected events)
4 Area Listing (all nodes)
5 Soil Listing (all nodes)
6 Ground Covers (all nodes)
1.5-inch Event
7 Node Listing
8 Subcat 4S: Proposed Site 1
9 Pond 1P: Infiltration Basin
11 Link 5L: Outfall
5-vr Event
12 Node Listing
13 Subcat 4S: Proposed Site 1
14 Pond 1P: Infiltration Basin
16 Link 5L: Outfall
10-vr Event
17 Node Listing
18 Subcat 4S: Proposed Site 1
19 Pond 1 P: Infiltration Basin
21 Link 5L: Outfall

4S
ProPOSE d Site 1
Aip
Infiltrat
Basin
5L
Outfall
Subcat Reach On Link Routing Diagram for 34798.02 HydroCAD_TRSS_Proposed_Mod3 t t
Prepared by VHB. Printed 2/28/2023
HydroCAM 10.10-7c sin 01038 ©2022 HydroCAD Software Solutions LLC

34798.02 HydroCAD_TR55_Proposed_Mod3 test
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 2
Project Notes
Defined 6 rainfall events from NC-Currituck OF

34798.02 HydroCAD_TR55_Proposed_Moc13 test
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 3
Rainfall Events Listing (selected events)
Event# Event Storm Type Curve Mode Duration B/B Depth AMC
Name (hours) (inches)
1 1.5-inch Type III 24-hr - - Default--24.00,-1 1.50-2
2 5-yr Type III 24-hr Default 24.00 1 6.17 2
3 10-yr Type III 24-hr Default 24.00 1 6.15 2

34798.02 HydroCAD_TR55_Proposed_Mod3 test
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 4
Area Listing (all nodes)
Area CN Description
(acres) (subcatchment-numbers)
1.390 74 >75%"Grass cover, Good, HSG C (4S)— ——'
1.220 98 Paved parking, HSG C (4S)
2.610 85 TOTAL AREA

34798.02 HydroCAD_TR55_Proposed_Mod3 test
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 5
Soil Listing (all nodes)
Area Soil Subcatchment
(acres) Group Numbers
0.000 HSG A - --- —' -
0.000 HSG B
2.610 HSG C 4S
0.000 HSG D
0.000 Other
2.610 TOTAL AREA

34798.02 HydroCAD_TR55_Proposed_Mod3 test
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 6
Ground Covers (all nodes)
HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment
(acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers
0.000 0.000 1.390 0.000 0.000 1.390--->750/d"Grass cover,-Good 4S
0.000 0.000 1.220 0.000 0.000 1.220 Paved parking 4S
0.000 0.000 2.610 0.000 0.000 2.610 TOTAL AREA

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type 1/124-hr 1.5-inch Rainfall=1.50"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 7
Time span=5.00-20.00 hrs, dt=0.01 hrs, 1501 points x 2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Dyn-Star-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment4S: Proposed Site 1 Runoff Area=2.610 ac 46.74% Impervious Runoff Depth>0.41"
Tc=5.0 min CN=85 Runoff=1.34 cfs 0.089 of
Pond 1 P: Infiltration Basin Peak Elev=8.19' Storage=0.089 of Inflow=1.34 cfs 0.089 of
Outflow=0.00 cfs 0.000 of
Link 5L: Outfall Inflow=0.00 cfs 0.000 of
Primary=0.00 cfs 0.000 of
Total Runoff Area = 2.610 ac Runoff Volume =0.089 of Average Runoff Depth = 0.41"
53.26% Pervious = 1.390 ac 46.74% Impervious = 1.220 ac

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type Ill 24-hr 1.5-inch Rainfall=1.50"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 8
Summary for Subcatchment 4S: Proposed Site 1
Runoff = 1.34 cfs @ 12.08 hrs, Volume= 0.089 af, Depth> 0.41"
Routed to Pond 1 P : Infiltration Basin
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Type III 24-hr 1.5-inch Rainfall=1.50"
Area (ac) CN Description
1.220 98 Paved parking, HSG C
0.000 98 Water Surface, HSG C
1.390 74 >75% Grass cover, Good, HSG C
2.610 85 Weighted Average
1.390 74 53.26% Pervious Area
1.220 98 46.74% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (fUft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4S: Proposed Site 1
Hydrograph
■RunoR
ixus
Type III 24-hr
1.5-inch Rainfall=1.50"
Runoff Area=2.610 ac
Runoff Volume=0.089 of
Runoff Depth>0.41"
Tc=5.0 min
CN=85
0
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type/1/ 24-hr 1.5-inch Rainfall=1.50"
Prepared by VHB Printed 2/28/2023
HydroCAD@ 10.10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 9
Summary for Pond 1 P: Infiltration Basin
Inflow Area= 2.610 ac, 46.74% Impervious, Inflow Depth > 0.41" for 1.5-inch event
Inflow = 1.34 cfs @ 12.08 hrs, Volume= 0.089 of
Outflow = 0.00 cfs @ -5.00.hrs,--Volume=.-----0.000.af,-Atten=-100%,-Lag=-0.0-min, ----
Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of
Routed to Link 5L : Outfall
Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs/2
Peak Elev= 8.19' @ 20.00 hrs Surf.Area= 0.477 ac Storage= 0.089 of
Plug-Flow detention time=(not calculated: initial storage exceeds outflow)
Center-of-Mass det. time=(not calculated: no outflow)
Volume Invert Avail.Storage Storage Description
#1 8.00, 1.225 of Custom Stage Data (Prismatic)Listed below(Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
8.00 0.464 0.000 0.000
8.50 0.499 0.241 0.241
9.00 0.534 0.258 0.499
9.50 0.570 0.276 0.775
10.00 0.610 0.295 1.070
10.25 0.630 0.155 1.225
Device Routing Invert Outlet Devices
#1 Primary 9.50' Emergency Spillway, Cv=2.62(C= 3.28)
Head (feet) 0.00 0.17 0.67
Width (feet) 53.30 55.00 60.00
Primary OutFlow Max=0.00 cfs @ 5.00 hrs HW=8.00' TW=0.00' (Dynamic Tailwater)
t 'l=Emergency Spillway( Controls 0.00 cfs)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type III24-hr 1.5-inch Rainfal1=1.50rr
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 0 2022 HydroCAD Software Solutions LLC Page 10
Pond 1P: Infiltration Basin
Hydrograph
■Inflow
,H qs ■Primary
Inflow Area=2.610 ac
Peak Elev=8.19'
Storage=0.089 of
3
0
LL
166
0
5 6 1 a 9 ,1 '3 'S 16 17 18 19 20
Tune (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type III24-hr 1.5-inch Rainfall=1.50"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 11
Summary for Link 5L: Outfall
Inflow Area = 2.610 ac, 46.74% Impervious, Inflow Depth = 0.00" for 1.5-inch event
Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of
Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min
Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Link 5L: Outfall
Hydrograph
■Inflow
■Primary
Inflow Area=2.610 ac
u
3
0
LL
0 00 us
a.0o crs
0
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type ///24-hr 5-yr Rainfall=5.17"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 12
Time span=5.00-20.00 hrs, dt=0.01 hrs, 1501 points x 2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment4S: Proposed Site 1 Runoff Area=2.610 ac 46.74% Impervious Runoff Depth>3.32"
Tc=5.0 min CN=85 Runoff=11.05 cfs 0.721 of
Pond 1P: Infiltration Basin Peak Elev=9.40' Storage=0.721 of Inflow--I 1.05 cfs 0.721 of
Outflow=0.00 cfs 0.000 of
Link 5L: Outfall Inflow=0.00 cfs 0.000 of
Primary=0.00 cfs 0.000 of
Total Runoff Area=2.610 ac Runoff Volume = 0.721 of Average Runoff Depth = 3.32"
53.26% Pervious = 1.390 ac 46.74% Impervious = 1.220 ac

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type /// 24-hr 5-yr Rainfall=5.17"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 13
Summary for Subcatchment 4S: Proposed Site 1
Runoff = 11.05 cfs @ 12.07 hrs, Volume= 0.721 af, Depth> 3.32"
Routed to Pond 1 P : Infiltration Basin
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Type III 24-hr 5-yr Rainfall=5.17"
Area (ac) CN Description
1.220 98 Paved parking, HSG C
0.000 98 Water Surface, HSG C
1.390 74 >75% Grass cover, Good, HSG C
2.610 85 Weighted Average
1.390 74 53.26% Pervious Area
1.220 98 46.74% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cfs)
5.0 Direct Entry,
Subcatchment 4S: Proposed Site 1
Hydrograph
12 ■Runoff
11 OS M
11 Type III 24-hr
t0 5-yr Rainfall=5.17"
9 Runoff Area=2.610 ac
6 Runoff Volume=0.721 of
' Runoff Depth>3.32"
0 6 Tc=5.0 min
5 CN=85
4-
3-
2-
1
0 ,
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type I//24-hr 5-yr Rainfall=5.17"
Prepared by VHB Printed 2/28/2023
HydroCAD010.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 14
Summary for Pond 1P: Infiltration Basin
Inflow Area = 2.610 ac, 46.74% Impervious, Inflow Depth > 3.32" for 5-yr event
Inflow = 11.05 cfs @ 12.07 hrs, Volume= 0.721 of
Outflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten=-100%,-Lag=-0.0-min-__
Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of
Routed to Link 5L : Outfall
Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs/2
Peak Elev= 9.40'@ 20.00 hrs Surf.Area= 0.563 ac Storage= 0.721 of
Plug-Flow detention time=(not calculated: initial storage exceeds outflow)
Center-of-Mass det. time=(not calculated: no outflow)
Volume Invert Avail.Storage Storage Description
#1 8.00, 1.225 of Custom Stage Data (Prismatic)Listed below(Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
8.00 0.464 0.000 0.000
8.50 0.499 0.241 0.241
9.00 0.534 0.258 0.499
9.50 0.570 0.276 0.775
10.00 0.610 0.295 1.070
10.25 0.630 0.155 1.225
Device Routing Invert Outlet Devices
#1 Primary 9.50' Emergency Spillway, Cv= 2.62(C=3.28)
Head (feet) 0.00 0.17 0.67
Width (feet) 53.30 55.00 60.00
Primary OutFlow, Max=0.00 cfs @ 5.00 hrs HW=8.00' TW=0.00' (Dynamic Tailwater)
t1=Emergency Spillway( Controls 0.00 cfs)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type ///24-hr 5-yr Rainfall=5.17"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 ©2022 HydroCAD Software Solutions LLC Page 15
Pond 1P: Infiltration Basin
Hydrograph
®InFlow
12 n�aso ❑ Primary
11- Inflow Area=2.610 ac
10 Peak Elev=9.40'
9 Storage=0.721 of
8
w 7
6-
5-
4-
3-
2-
1
a oo ns
0
5 6 7 B 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type/1/ 24-hr 5-yrRainfall=5.17"
Prepared by VHB Printed 2/28/2023
HydroCAD810.10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 16
Summary for Link 5L: Outfall
Inflow Area = 2.610 ac, 46.74% Impervious, Inflow Depth = 0.00" for 5-yr event
Inflow = 0.00 cfs @ 5.00 hrs, Volume= 0.000 of
Primary = 0.00 cfs @ 5.00 hrs, Volume= 0.000 af, Atten= 0%, Lag= 0.0 min
Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Link 5L: Outfall
Hydrograph
■Inflow
■Pnmary
Inflow Area=2.610 ac
a
LL
a.00 as
o.00 cn
0
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours(

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type Ill 24-hr 10-yrRainfall=6.15"
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 17
Time span=5.00-20.00 hrs, dt=0.01 hrs, 1501 points x 2
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN
Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method
Subcatchment4S: Proposed Site 1 Runoff Area=2.610 ac 46.74% Impervious Runoff Depth>4.19"
Tc=5.0 min CN=85 Runoff=11M cfs 0.911 of
Pond 1P: Infiltration Basin Peak Elev=9.52' Storage=0.786 of Inflow=13.81 cfs 0.911 of
Outflow=0.48 cfs 0.130 of
Link 5L: Outfall Inflow=0.48 cfs 0.130 of
Primary=0.48 cfs 0.130 of
Total Runoff Area=2.610 ac Runoff Volume= 0.911 of Average Runoff Depth =4.19"
53.26% Pervious = 1.390 ac 46.74% Impervious = 1.220 ac

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type 111 24-hr 10-yr Rainfall=6.15"
Prepared by VHB Printed 2/28/2023
HydroCAD® 10.10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 18
Summary for Subcatchment 4S: Proposed Site 1
Runoff = 13.81 cfs @ 12.07 hrs, Volume= 0.911 af, Depth> 4.19"
Routed to Pond 1 P : Infiltration Basin
Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Type III 24-hr 10-yr Rainfall=6.15"
Area (ac) CN Description
1.220 98 Paved parking, HSG C
0.000 98 Water Surface, HSG C
1.390 74 >75% Grass cover, Good, HSG C
2.610 85 Weighted Average
1.390 74 53.26% Pervious Area
1.220 98 46.74% Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Subcatchment 4S: Proposed Site 1
Hydrograph
15 ■Runoff
4 13 e1 ds
13 Type III 24-hr
12 10-yr Rainfall=6.15"
11 Runoff Area=2.610 ac
10 Runoff Volume=0.911 of
e Runoff Depth>4.19"
Tc=5.0 min
6 CN=85
5
4
3
2
1
o .
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Time (hours)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type 111 24-hr 10-yr Rainfall=6.15"
Prepared by VHB Printed 2/28/2023
HydroCAD@ 10,10-7c s/n 01038 @ 2022 HydroCAD Software Solutions LLC Page 19
Summary for Pond 1P: Infiltration Basin
Inflow Area = 2.610 ac, 46.74% Impervious, Inflow Depth > 4.19" for 10-yr event
Inflow = 13.81 cfs @ 12.07 hrs, Volume= 0.911 of
Outflow = 0.48 cfs @ 15.55 hrs, Volume= 0.130 af, Atten= 96%, Lag= 208.7 min
Primary = 0.48 cfs @ 15.55 hrs, Volume= 0.130 of
Routed to Link 5L : Outfall
Routing by Dyn-Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs /2
Peak Elev= 9.52' @ 15.55 hrs Surf.Area= 0.572 ac Storage= 0.786 of
Plug-Flow detention time=429.9 min calculated for 0.130 of(14% of inflow)
Center-of-Mass det. time=261.2 min ( 1,028.7 - 767.4 )
Volume Invert Avail.Storage Storage Description
#1 8.00' 1.225 of Custom Stage Data (Prismatic)Listed below(Recalc)
Elevation Surf.Area Inc.Store Cum.Store
(feet) (acres) (acre-feet) (acre-feet)
8.00 0.464 0.000 0.000
8.50 0.499 0.241 0.241
9.00 0.534 0.258 0.499
9.50 0.570 0.276 0.775
10.00 0.610 0.295 1.070
10.25 0.630 0.155 1.225
Device Routing Invert Outlet Devices
#1 Primary 9.50' Emergency Spillway, Cv= 2.62(C= 3.28)
Head (feet) 0.00 0.17 0.67
Width (feet) 53.30 55.00 60.00
Primary OutFlow Max=0.48 cfs @ 15.55 hrs HW=9.52' TW=0.00' (Dynamic Tailwater)
L7=Emergency Spillway(Weir Controls 0.48 cfs @ 0.46 fps)

34798.02 HydroCAD_TR55_Proposed_Mod3 test Type 111 24-hr 10-yrRainfall=6.15"
Prepared by VHB Printed 2/28/2023
HydroCAD®10.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 20
Pond 1P: Infiltration Basin
Hydrograph
■Inflow
15 13.e1 cix ■Primary
14 Inflow Area=2.610 ac
13 Peak Elev=9.52'
12
11 Storage=0.786 of
10
r9
= 6
7
LL
6
5
4
3
2
1 O.M as
5 6 _ 0 9 10 11 12 13 14 15 16 17 16 19 20
Time (hours(

34798.02 HydroCAD_TR55_proposed_Mod3 test Type /// 24-hr 10-yr Rainfall=6.15"
Prepared by VHB Printed 2/28/2023
HydroCAD010.10-7c s/n 01038 02022 HydroCAD Software Solutions LLC Page 21
Summary for Link 5L: Outfall
Inflow Area = 2.610 ac, 46.74% Impervious, Inflow Depth > 0.60" for 10-yr event
Inflow = 0.48 cfs @ 15.55 hrs, Volume= 0.130 of
Primary = 0.48 cfs @ 15.55 hrs, Volume= 0.130 af, Atten= 0%, Lag= 0.0 min
Primary outflow= Inflow, Time Span= 5.00-20.00 hrs, dt= 0.01 hrs
Link 5L: Outfall
Hydrograph
■Infiow
o.bm ■Primary
0.5 Inflow Area=2.610 ac 0.48
�
0.45
0.4
0.35
0.3
3 o.as
LL
0.a
0.15
O.t
0.05
0
5 5 7 6 9 10 12 13 14 15 16 17 16 19 20
Time (hours)

Operation & Maintenance Agreement
Project Name:I Chaney Concrete Batch Plant
Project Location:lCurrituck County, NC
Cover Page
Maintenance records shall be kept on the following SCM(s). This maintenance record shall be kept in a log in a known set location.
Any deficient SCM elements noted in the inspection will be corrected, repaired,or replaced immediately. These deficiencies can
affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the SCM(s).
The SCM(s) on this project include (check all that apply &comes onding O&M sheets will be added automatically).
Infiltration Basin Quantity: 1 Location(s):
Infiltration Trench Quantity: Location(s):
Bioretention Cell Quantity: Location(s):
Wet Pond Quantity: Location(s):
Stonnwater Wetland Quantity: Location(s):
Permeable Pavement Quantity: Location(s):
Sand Filter Quantity: Location(s):
Rainwater Harvesting Quantity: Location(s):
Green Roof Quantity: Location(s):
Level Spreader-Filter Strip Quantity: Location(s):
Proprietary System Quantity: Location(s):
Treatment Swale Quantity: Location(s):
Dry Pond Quantity: Location(s):
Disconnected Impervious Surface Present: No Location(s):
User Defined SCM Present: NO Location(s):
Low Density Present: No Type:
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to
the system or responsible party.
Responsible Party: Kilf, Kvr .
Title&Organization: - b. 1 N Mt
Street address: 2g10 F - . 5.; zc
City, state, zip: ,..,G : M 2143S4
Phonenumber(s): yj- i - qqC
Email KMv�r.:. �.ch,+e c.(vPr•s cs. cc•+
Signature: Data '� )' 3
I, M- /� a Notary Public for the State of 0.X1 QC
County of A n ng- ! t r U r)o(P t - do hereby certify that LtA
personally appeared before me this 2-n OL day of 1 v`CLA-Ck-) and
acknowledge the due execution of the Operations and Maintenance Agreement.
Witness my hand and official seal, L V k,
LORI M.NARTMAN
Notary Public-State of Maryland
Anne Arundel County
My commission Expires Nov 28. 2026
Seat My commission expires
STORM-EZ 3/1f2023
Version 1.5 O&M Agreement Page 1 of 3

Infiltration Basin Maintenance Requiremettts i
Important operation and maintenance procedures:
-The drainage area will be carefully managed to reduce the sediment load to the Infiltration basin.
No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish
- the vegetation. Lime may be allowed if vegetation is planted on the surface of the infiltration basin and a
soil test shows that it is needed.
- The vegetation in and around the basin will be maintained at a height of four to six inches.
After the infiltration basin is established, it will be inspected quarterly and within 24 hours after every storm event
greater than 1.0 inches(or 1.5 inches if in a Coastal County). Records of operation and maintenance shall be kept in a
known set location and shall be available upon request
Inspection activities shall be performed as follows. Any problems that are found shall be repaired immediately.
SCM element: Potential problem: How to remedlate the problem:
The entire Infiltration Trash/debris is present Remove the trash/debris.
basin
Areas of bare soil and/or Regrade the soil if necessary to remove the gully, plant ground
erosive gullies have cover and water until it is established. Provide lime and a one-
The grass filter strip or formed. time fertilizer application.
other pretreatment area Sediment has accumulated Search for the source of the sediment and remedy the problem if
to a depth of greater than possible.Remove the sediment and dispose of it in a location
three inches. where it will not cause impacts to streams or the SCM.
i Unclog the conveyance and dispose of any sediment in a location
The flow diversion The structure is Dogged. where it will not cause impacts to streams or the SCM.
structure(if applicable)
The structure is damaged. Make any necessary repairs or replace if damage is too much for
repair.
The inlet pipe is clogged(if Unclog the pipe and dispose of any sediment in a location where it
applicable). will not cause impacts to streams or the SCM.
The inlet pipe is cracked or
otherwise damaged(if Repair or replace the pipe.
applicable).
The inlet device Regrade the swale if necessary and provide erosion control
Erosion is occurring in the devices such as reinforced turf matting or riprap to avoid future
swale(if applicable). erosion problems_
fStone verge is clogged or Remove sediment and clogged stone and replace with clean
covered in sediment(if Gone.
applicable).
More than four inches of Search for the source of the sediment and remedy the problem if
sediment has accumulated. possible. Remove the sediment and dispose of it in a location
where it will not cause impacts to streams or the SCM.
I
The basin Erosion of the basin surface Provide additional erosion protection such as reinforced turf
j has occurred or riprap is matting or riprap if needed to prevent future erosion problems.
displaced.
Water is standing more Replace the top few inches of soil to see if this corrects the
than three days after a standing water problem.If not, consult an appropriate professional
storm event for a more extensive repair.
i

Infiltration Basin Maintenance Requirements continue !
SCM element Potential problem: How to remediate the problem:
Shrubs or trees are growing Remove shrubs and trees immediately.
on the embankment
The embankment An annual inspection by an
appropriate professional Make needed repairs immediately.
shows that the
embankment needs repair.
Clogging has occurred. Clean out the outlet device and dispose of sediment in a location
98 g where it will not cause impacts to streams or the SCM.
The outlet device
The outlet device is Repair or replace the outlet device.
damaged
Erosion or other signs of
damage have occurred at Repair the damage and improve the flow dissipation structure.
the outlet
The receiving water Discharges from the
infiltration basin are causing Contact the local NCDEQ Regional Office.
erosion or sedimentation in
the receiving water.
f

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NCDEQ STANDARD EBIS NOTES
GRDUNDSTABI nONANDMATERWSNANDUNGPRACTIQSFORCOMP Maifiirl! EQUIPMENTANDVEHIOENAINTETANQ DAnDwgEn[vevwr C /��
THENCGOIWNSTHUCTONGENEAAIPERMIT 1. Maintain vehicles and equipment to prevent discharge offluids.
Implementing the details and speclfiatlom on this,plan sheet wO result In the construction L Provide drip pans under aay stored equipment -
V
advity being considered mmplbntwkh the Ground Stsblixatlon and Materials Handling
3. Identity leaks and repnaz scan as feasible,or remove leaking e4uipmentfrom Ne
svctionsafthecomp pmbudon GenealPermti(Sodom Eantl F,rapecIrYthe anted vX9 Esk¢en39 gK Pt
percolates,abet mmphwiOnNefroabnand Sediment Camelplan approved bYNa Y �� Srpwm4npa locos,
delegated plycleiryhlan,onrbtllNvn.ionadi details and legarc rations shown onNice sheet 4. CdleR alswagfluovelawin separate mntainen antipmpeMdbpose as
ma note tie ntlb onska mnditlop nit the tlele hatardauawaste(hicle and wfien tale).
Y PpIY p i road auNariryhavingludsdidom R¢dgM1ncirem
5. Rem been
consec vehicles and mnstructlanequipment fromuMauneltbepreblem Z �r ma- gwe2s.aia
�..J'
SECTON E:GROUND STABIUTATON has been mums,lug `�rv-� aL-ppf
R uned Grooms StabNation Tough am. 6. grk¢medng or dsiaMs,molthat hndlestese and teals. petroleum products v �^-_� >;� CwP
Whites within tlda Lace recycling ortlopoulcenterthat handles these materials. sr'Yo^l3m• .gy_
Site Area D,w,P,d marry,calendar Tmeframavmiatlan w a,pow.la son svWP
days z1 er cooing UTTER,BUILDING MATBUAL MD IAND QEANNG WASTE
land duurbance 1. Nmrt,morbumwaste.Placelkteranddebrtteappmvedwasgemntafnem
(a) Pedmrterdikes, 2. Pr 4easu deMnumberandsixeofvnsmmntainen(eydumpskr sh CONOIETEWASHOUTS
.1a,ditche;and y None rem ck on skeowntalnmnstmctlan and dam<dc wastes.
pedmekrdopes Ota ) L Donotd'uchar leseWedamenwdwmmmtheska.
3. Mtemmstss noonenativas ejaetawryhomsmnndvain intetsaM Surhm j, aidda N,IXacyck Seuad,nalind dmMretemdfaciinamardarrcaWM bat
(b) High )Ame Water None voters unless onothers on
reazonacalveslable. Manage
from
mortar
at anappmved facility.
(HgW)Zones y 4. Irate waste correlnenon areas Nat do net recede subskntialammnts of**math 3. Manage waho,frorn moror,ben in accordance with the above teem and in
(c) Slomssteeper Nan If slopes am 10'or less In length and are from upland area and does net dmin directly to a storm drain,stream or wetland. addition place the miner and associatetl materials on impervious hill and within
3:1 T nvtsteeper Nan j:l,l4 days am 5. Cover wage containers a the end of each workday and before shorn events or I,perimetersiltfance.
allowed psnvldesemndarycentafnment Repdrorreplacedamagedwasemntainers. 4, Installkmpmarymncrem Washamsperbmlmquimmenuwhemapprimble.lfan
Jdaysorslapesgraaer Nan Spin 6. Anchor at lightweight names in wane containers during times of high winds. ahemate method or product is to be used,coma"your approval authority for
length and with slopes staeperthan 4A T. Empty waste mntainen as needed to prevent overflow,oem up lmmediatehlf revlewandappmval.IflosalsrandaNftUnamnmavatbbb,neon NtheWo
-]danfr-padmemrdkes,awalm, mntatnenoverflow. typesdumpomryconrmtewashaubpm dedonthUdeUR.
(d) 5lopm3:1m4:1 14 drtche;perlmekrslapes and HOW S. Dispose wage off-site a an approved disposal facility. S. Do sect use mrrcrem washouts fro dewamdnL or storing defective orb or sidewalk _
Zones 9. On business days,dean up and colones,ofwase in designated waste containers. sodium.Sternwater accumulated within the washout may not be pumped into or
-10 days far Falls take Watershed dfsrha%g wthenormdrainsystemorr•mMnssurfacewatem Uqutdwanemart
-y days forpedmekrtlOa;swales, PAINTAXD OTHER LIQUID WASfE be pumped aut and rammed from pmlect
ditches,perimeterslopes and HQWjone 1. Oa not dump pint and other liquid Wage into storm chains,streams erwatlands. S. mate Waabeub at least5ral from stammuma drain lab and ble.Maurl waters , It
(eJ Area with slopes drsinmnbeghawnNrtmemn draiamativa aos reamatlyashout whictc could
mem,
flmerthan 4:1 14 -herels for slo take Waenhed,less 2 ramteplessnooubrt lead 5O feet ves;am reay/mm rtormable. eband sudam Install protection of storm drain Inert(s)closed ta Newaghor0whkh coats,receive
them Is mroslope wake unless no mherakematives am reasonably awgable. spilla oroveribw.
Nate:After the permanent cessation of construction activities,any area with emmury 3. Contain liquid wastes In a controlled area. j. locate washouts N an easily acrossble area,on level pound and Install a done
gmund stabilinUon shall be converted m pemnment ground stabilization as soon as 4. Containment must be labeled,dared and placed appmpdaelyfer the ncetls of eke. entrance pad In front offers washout Additional controls may be required"a
tradable but in no age longer than 90 calendar days after the last land disturbing S. Prevent the ciubama of stop,solvents,detergents and other liquid wanes from apprMngauNadty.
advit,Temporary ground stabllutlan shall be maintained b a mannerto randerthe construction silts. 9. Install at lead one sign dired tourism
rism clntothewashoutwkhinthep "mfe
mrecomMea inrtaeceleut emabnuntl rmanent muneatabRbatlonbachkvee. limits.PoAsignagaonthewashoutkselftoldenUNNislaratim.
PDRTABIETOIIETS 9. Remavelea ngsimm Newatho,wkenataprm ly75%mpcWolimh
GROUND STABIIDATON SPEOFIIATON 1. Ingegporobb,gets pen level[rornd,rtleart 50kttawayfram norm dnfm, overgmvevents.Replam Neumundbegsormherwmporarystmcmal
Stabillae the groundsufidemhsoNrt min will net dislodge Oneself.Useoneofthe streamsorwetlandsunlentheetsnoakemati core mablyawllaWe.HOW mmponentswhennolangerfundonal.WhenuNizingaltemrtheorpmpdetary
techniques b the table below: oAset n nptamiable,prpdde nb"t'vn Nperobk miler behind sikkna orplaa
and pMe completion
o ogow n of the com/s n vdrkbns.
Tempdran¢kmWgon - Pomade,debalndm On epee or anchoring
wadi sand bans. 10. Atths,rowdtlonoferemn"ee woN,remove remainin8leavings and abloom of
•iemmnnpassseetlmwretl wNsuaww •Pemanent pas ssef mwredwWmown* 2 Pmvldageareas. of portable togats during periods of high wlMsorehyh Nandbyreircundalfadlky.Fllpk,Happl'imbk,aim stabtgze any dlsmrbaslm
ptla.mwmnamu"Rers otnvnuklasaeenrun MonDaifloareaz. aced by removalmwazhom.
.Wedeeding .LemniNv rabdzemaespermaamsdl 3. Mannarproedsanietskrbakinularempeovdispose"ortabl akedmakd raids.
Chaney Enterprises
,
•wluxAcemorm,gr ,savul vdNdr rardroccoon, amds UtllualcensedunkarywagehaNermnmweleaUng porobbalbb and replace 104 Xihe Commene Drive
wlump4Wawrarazved tMulnorng with PmPeMopentlnL unit. Dowels Po'vrA NaM Camgne
•Appmpdatehappgetlsemr maNmmulm •9we mathxscednanmtpanWmpcwerM NEABIDDES,PESTOOEI MD ROOEMIOOES
•platdcshem, rNmWm 1. Score and apply herbicides,plotless.and rodentldda in accordance with label
•usecumand events tlistr3med 8rouM cover EARINENSTOCI4•IIEMANAGEMW restrictions.
uftkorrutcsmv,alnurackn L Shaw stoclyla lacetions on plans.Locate earthen-makrlalstxkpily areasalaait L Seem berhitlda,pesticWes and rodentldda o theirmi l containers with the
a •suuvgnlmetrods unummeu,aspNltm 5p ketewryfram storm dnln inkb,setlimem balm,pedmekraetlimsntmntrds label,which Osts conditions faruse,Ingredients and first aid sap in casein
i rsrini:gwanz and surface waters unless k co gh n ben shown no oerakematla v are reasonably amidentala000nin¢,
•Pplletl emslomm�trol mdu[tsv+N asseetl available.
ben,store hertiddvt,pesticides and mdemiddakanazwberaflaodnLk
j. Protect stockpile with shkn ed alonLma otslop with um ha minim offset:of 3.
a POLYAOIYIAMIDES IPAMSI AND FIA[OIUNR five to"from Netm of stockpile.kPile. possible rwhere Naymayspig ar Walk Into walk,germwaerdrsins,ground water
orsurfam weer.If a spill acuvs,ckan amen immedueh•
3 1. Sale l.n,ames gf appropriate RWfApparge sells tn¢aAmaddudng 3. StaNdzedockgeneaness sold when e provided
4. Do net stockInla these makdab omit. - F•armtMxnat
Apply flaion,akctlnrfmmthe NCDWg Erosion and See DAMSt Control
Me 4. with the
atom Re plan and
tlmefiamenal requirements.
Shea and inacordanm
3 j. APPhflamvlanbrtorbefpre the inleboEmsion end Sediment Carwl Measures. with theapprwed plan andaay additional requiramenb.Soilstabilixatimodefined
3. HA¢AgOOUSANDT)RICWIlSTE NCDEQ
PAMS/iio¢ulants and In accordance with the manufacturers Instructions. emsion on disturbed soft for temporary or permanent control needs. 1. Creaa des'gmrted hanrdoawarte mgectipnareaz or.sie.
E&S Notes
a€ 4. Pmviee paneln¢areafpmnbinme,mtnaeeSmrtnwaerbefore disNaging 2. Pbwhaamoawasemo immundermvererinwcendaryconuinment
g S. Stmfi culanbtnleakip wnulnentlutom Wptundernommresigemcover 3. DonotsktehmMomtlomlan,emmsorb U-dmakdabdiredymn gmu .
a orsummdeebysecondarycomaimnentatmctkeg.
If �-
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19 C1v01
own a -
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N WEQ STANDARD East NOTES
Off
00
_ _ PARTiII PARTIII _ PARTIII �'V hbN
SEIFINSPECDON,RECORDINFDING AND REPORTING SEWNSPECTON,RECOROgEFPING AND REPORTING $ElFU15PECT10N,RECORDREEPIXGAND REPORTING
A SEWNSPECIION SIMON r:REEORDIUEPING SECTION C REPORTIG
SelFiispectans an required during normal business hours Inamomanre road,the able LE@SC PInn OocumenHUan LO¢urrenmthrt Mustbe Reported Viafemadeg N(,M
below.When adverse weathermsite considers;would cause Me cfetyofthe Inspection Theapprwed E&SC plan as well asarlyappreaved devlatiari Mall be kepton Maine.The Permiltees shall responsible fallowing Occurrences: gb WkGmpa asrs
perearnelto be in)eopamy,Ne inspemon may be delayed until the need bulnes,day on approved Ell plan must be kept uPtodate,throughout Me ceveage undertMs permit
whiNkksafe tO perform Ne InswNon.Inaddkion,whensatormewmo/aqulm.rkertar (a) Vb@la sediment depasMon lnastream orwetlarM. U69K^
presidential 1.0 inch occurs outside of normal business hours,the seMtinspection shall be Thpectionat dates EgSCss;ho e.be kept on site and available fur Raleigh Nczxw6
perfarmedupannommmencmefteNene bulnessdry.An timewhenlnzpectioM Inspection at all times during normal business hours. (b) Ov spvU ih g1eslic-3e
were delayed shall be noted In the Inspection Record. ltemeo DeameM oammemation pesulremema . Th n Ilmsormare, Cwp.aCsxoS
eyapi gal
pwewnry (a)Facb E&SC measure M1azbeen costa lad InoullandeameaAE&SCmeazuremacapy . noyam less Nan 25 gallons but cannot be cleaned up within 24 hours,
sopea kareanwma aspvabrl records mwtllWde and does not signs ntly devate from the of the approved E&SC plan or complete.date
son. un locations,dimensions am relative elevations and sign an inspection recruit that lists each • They same sheen on surface system(regamlea ofwlume),or
IlIta Nsato, pay Devrerfaualu awnon Neappmve
r. shd F&$Cpan. &5e l Emea m sueshownaneapprovel . Theyarewithin 100feeta m flurfa waters(regamleas ofwlurie).
cad. If re date ran emir,abeervafieu are aside darks,w¢teN orplan.This documentation 6 required upon Me
aabwmaiN tonsure
p ,are on KmEualEsr ranted information n Wool installation ef[M E& mevfuresw J
rider kilo.remM Ne dmWrre rain—averts,let NaA um
.nemm ens lard mh cum derermbr ll a are bapwrkn a Me E85C measureare mmiged after initial (c) Releases OF haanou substances In access a reportable quantities under Section 311
IwaleeI.parrs on vhlM neralnhl—spas snap ee minded as Installation. o/Ne Uean WanrAct(ReF.00 VR 1103 and 406R SIy3)or5ectbn 102 NCERM
ress MThe pie man un simmer rdo.mdmbe dream (bl sphere ofgmdinghas been completed. InifialamdafeampyottM approvetl E&SC (pa%.CO CFR302A)m G5.Id3-215.&5.
owd IMOINibm
Ul fasC stumarcawr 1.Wanw karaltwereawaesinrpecte, Plano wmpkte.tlaU are 9gn an lrrSpeNon
yeass— xobrdareaK zOareanae'neatlx impnim. rewnrt.lariraxemmpletipnof Ne
u 3xamemmewrmn wdormra rM1ern.pMWy mnamisonphan. (d1 Antidpand bypasses and unanticipated bypasses.
ana.ivan
Iwvmad.a ♦1 orlwmN<.urelwrw<e.a.<w<•,W (O Ground career is knows and installed Initial and data a copy of Me approved E&SC
x� xLIM1n wep.od, M armm.wish Ono approved E&SC plan or complete.data am sign i e Noncompliance with the mmitlora of Nu g
lw�m a lsemposn.,arrrreaeee.lvonnnaawe ,with ppmem (1 p permit endanger heakhmNe
6 user ..."amaeaotmrmanned. suaaw Pam. repoRtann't'smmrime compliance,with approved environment
Orsharks, r nslnoercaprr z uknnndurre mealsNaraemdausurpecae4 groutsmverzpetlFNnlorry
ar.ser ioN x pmmaaknorMeawwem.
m I6aa sons) amsace. s.waincemepe.m p<nwminemermoeabn, Itll the v,mpmsfenanman:.yvu umptete,date and sign an lnspeotlon revert. 2.RepaNngTMefranesantl Other Regmrements
asear. .un a sadwlamwrosmeefammwfora ck m " reoubeen perform E&SCmeaman Aftera perMttee becomes award of an occurrence that must be reported,he shall spoken
a.em>tuvrrNk aleelvflmaeewwspe.emmusmeummanery have been performed. Neal date Divisionrt Iolal office within Me tbnefnmes and In accordance wish the
ialwrs S.IMiorMalnudewdmen[4aAr®Ne w. appropriate g
4 omr 'mnJnae.amamaof moue wawnhemn (e)
erze n dmea
ea g Other listed Occurrencesalb head my Wed
apenmettto( AaleaRanxter E&SC—.1unel Plam.,wmpe date
am Won
aninapeton reported
toMe De,eartment'sEn"ulnmenalEmeMers,Outer personnel at(M)
rraes spunMlwiromedremm<: reponwi intratremomletimnaffM1e
inni I. orMived6an. g58-030.
man.an ---
a.
a>i .ar es NOM1N4r da'sWaeNmnosemn Ytrry end 2.Additional W Me ElkndpWlmbehoot On Site OccourcieveOules Re roll 24 hiso0men nHn aluave amatMr u4emena
xa lim�n a.an<wlans ssroun anmautrnra mmwka.re I^addedanto Me forIm; actor; all tsabwe,the normal bgimms soar banles Impt one la7wsweseement . MWin zahourte oral a or electronic tout fbn
relorei r meand provable/artespelexelltimn basedgnanique she
hours,unless the amambnlea . Roam.mxemoday,arewRthasesthe aeemdwiandtire
Desk,tow acakada.ere. lluvenmamwrrakm malmearee.iswem'�menmonw. Division provitlesaske-specificezamption based on unique ske conditions stream orvmflam consiosesame.am aNOaks,th maaemss ref r aedmeepoit ona
vel6na.yr4le vary eNp Weamhv Wiaklmea+edeubYldYf^Trabmern,ak^ GIIB ylnmellL mat pnetlml: niMylan SUNmaV waHefierequlremenl(vrawnffen report omO
mdrana .y.epvn z. ,emy.Neearmrewwmm.inssnneennae: rare
(wham fro—or.rain 1.ossraxon,e.beme am con ormmea..actions,uam.am mseby.bail,
aoaama event>vo.rarb x.a®mermareas"rer<punn dw.wrwd•knnyon (a) ThbGenenl Pernik as wa0 asthe Tenkicta of Cavmge,akerkls receWed. note streenbn3mm on me NC 3031el lit.as impaired for sediment.
z.bm;m a oraornr. palm.sm;mGnem lRl,amapamva. martmmraes,ere wrmiateemay beregldreenpMwm aedalmw
In. arm a—waw tmawwwaaa at oparim erpamwk.r.v b Records of inspections made during Me pe manimnel inspeeions or apply more stancent pamms if staff
mmx.amr doadae cession.rlaalue.adom"ry.waanmmor.amm 1) g previous twelve months.The rmktee spar determine cat adyypny requirement are needed to assure mmpnaca
oneratere, indoor fass ,mmplealm.1.11 kmduarrrkn remm the required abservalmin an Me IinspeNon Record Form provided by the with the federal or state arpiked-waters mmmoov
.nxne,m—or,meembpmen.pvnurlma Division ora similar Inspection him Nat Includes all Me required elements.Useof
,queen mv.d� electmnlca Ilable rttords In feu of Me rmulled per miu will be allowed V noolspilbam thaddmahepm,anmal abriahe dmaetflontlw iti!ion
L pealmwrbrma[dwrmlaredpwrM�a� ly3ya Pa P no tourist slunbMWelnfatmrtbn alwu[MetlafG time,wNre.wlume am
wrtrluwaeen prwkeENmUew ragveea shown to provide equal access and Milryas the hardeopy records. naardaus larnkanofthesplllwrekase.
am.xamemmsswrwrrealwm:era uroe wapmmss sebmawa6wrhem Chaney Enterprises
�rss pt 3.Ooamusedana toomplemcant.belhos Me fThall Inspection
fare to) cal
All don usedmmmplrte the"Oland nd lnspenlOn remmeshiregemalntab 1n.411 Is) mbpned . Areporem fmn ens doers befae Me doeaytne bypass.Vpoa&xe 1D6 NilanUmmersp Drive
NOTE:The nth WpeNon rettestMrepdred)mlendardryiruwcNanrequirement. of three years aRerpnjectmmpletlon and made mvableuponrepuest[a06R322.01) bypasses[40 CFR the raper[anal lmlude an evaluation Of he ar,tiawnd quaMy am Powegs Point,Nark Cantina
IzanRmlDll ether hi
PART II,SECTON G,ITEkI(/) (d)Uners(skaaed • WMen as kaumr,daysoral orelersmay ratitflan
DRAW DOWN OF=IMENT BASINS FOR MAINIQIANQ OR HOSE OUT bwasses[o CF0. u,Mxn adeeiror eery aipass. immesan evauarynrifts
(a). mlDr quallWith in 24 heal,Or the mal or by z
3 [e)Nmmonandre . wahl.I Wong rdos.—FecnonR rwtif tlon
sedimembancs amtrapaNrt receive amHFible. nagoareas anoneaaeormonot fe aeeWe items w Met from trewwanrhom Nasurtfor when
ample,these
ars wM need Nbednwedown .1shmemnemons wrMenasalema.aaN.arewrt that mnhelnsaaembfwndare
3 lory-eurlan hdr close out unless Nis b dies shall Theowed Onnwhen white itk nowingc let. have
wn mid: the surace Nailed ran(forexample,tlmes with extended cold weather). .,ends,.r Iunmmpna mars
ate mmrans;dwwthe notorbnmdaeha
• Non-surface withdrawals from sediment basins shall be allowed Only when all al the following criteria have been met mayenaamge. ImivaingeaaR Oates anatlmes,anddNe tonmmpvwbe has net
_eNy1"y5 .{e
a heann prme bens mrreae4Ne amlawna time lwwmmdamelsuwaed ear --
(a) neE&SC plan authority has been provided wish dooanentatien of Me non-surface withdrawal and the spedRe time pedods or conditions In which it will occur.The non-surface withdrawal enswrvnemle(i eaminue;and steps taken or planned to reduce,elimlmon,am F.bwrym,=
6RUZAIII)MI weven[rto¢vnenre prNe mrmmpnurce.[star CFR 1xxA11r161.
3 shall not mmmenm until the E&SC plan aMcarey has approved these item, Dlvltlon shelf may wake the requirement for a writer,mpon on
a (b) The^on-surtamwkhdnwal has been pilfered as anaMiclprted bypass In•mordanmwkh Pad Ill,Section Q Item(2)(c)and ofNb permit, webraebasly
y (c) Dewanringdk aMosantrertedwkhmnbolstamMimizemxhaMesofpolwnnfnmstommsaterNnUmmovedfmmdesedimentbasin.Encodes NappmpdrtemMlols include I I NCDEQ
3 prepedysited,designedand maintained dewatanng tanW,weirtanb,andfiltntionsydems, E&S Notes
(it) Vegetated,uplandareasdNemesmapmwdydesignedstomepadbuedWNeemntfeashleethe^ud et edewatedngtreatmeMde msdescdbedinlnm(c)above,
(a) Velocity dissipation devices such ascheckdams,sediment trip,and dpnp are provided at Me discharge palms pill dewrteringdevlces,and
(f) sediment removed From the dawataring treatment devices described In Item(c)above Is disposed of Ina ma^narthat does not ruse deposition of sediment into waters ofthe United Statev
NCGO1 SELF—INSPECTION, RECO vDKEEPING AND REPORTING I EFFEC=: 04/01/191 C1.02
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Erosion And Sediment Control Nartative �
f
PA'monniPum _ F�m,e 9e�mmt(mydN�� Vmnaw%xu.s .a,e.wnK�m[ow ww.wwnn�av
ma..m�vawm.c`vnw.w°mmw�w oan�rrw ®rm, . w®.uvcam.au>oxnom.a 'v'®ON .�u®"�'wu®'m:°wo a wiw •,'F
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Sow� lonwo¢ro¢ v[ar ronvwL¢mnowm,.munnv2®n wwcuwavnw,nwrvvnmmvnmv,wc�[vaawmr. uuw numunmvuavonnr�[u+nw axm.auum 9uih1CO
wwm aweem.mrwnr MoINNUM
® yrryerww�a,usv vm�r xavn• i rm�m yv,uruvxvm¢mnyvua Sta +Ier Melu9emem �nl"�1[ ,vdm 919ffi9ID28
mm.nu,uiwwi we m[,rsu ne m uo
uovrarwrww,mmm„r�wmawvmu,mmva r,amrmvwoavnn .mn.wwaas[wnm prwnvmumncvxw Prrawnarsnrw�u •mmrtm,�a vauunr ruvruv C^R.C-9T05
IXhib Orem xo uraa m.v+v ux u�m�n®emrowutwlmrv.�nlrt¢vaw
wuwaurarwavmvvw�vor. MANAGFMFM SiRAlFQ1E5 ANO CONSIRIICTION SEQUENCE
Cn'tirlNm axm ma,[rrn[avua'mnua�nowmmexnow®t.wwwvvc
E&5 Legend
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Chaney Enterprises
•.n e�nS:,•ca a \ 104 Hind Cymmerm Drive
haselErosionand
— — —
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'n��nnn Sediment Control Plan
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NOdh Po P Caam. Drive
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Zoning Summary Chart Pariung Summary Chart Sign Summary Pavement legend
a.ay wx...uw.au s� Kur n bptlO. r.bmarm:av
j m+�v.vxrx...o�+.r.n wm+.. e.e aee.� nwm.wxa.a.•+aa na.e.. vmrx x.§m D" .
Layout and Materials Plan
.®....r.r....e ..... .r. ...w....a.wm rau�aa.rma ..-. ,r r (] 4
mrvpars�u
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PFLµ91GUJR/N IRGrading&Drainage Plan
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M Minn Camme]m Drive
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Pavement Legend Notes
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j• y ti-.,...—....r r.+..�..�a , usme®vmv 106H nes Cammam pfl
u�o.oa Paweon,North Con.fine
- ^—'M 6 `�•` ~�^-��y— Conc4uNon Haul Road
Erosion and Sediment
Control Details
RoOed Fmion Cantrd P]oduM R van Temporary Diversion Q emu
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/ Portable Concrete Batch Pont
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mrrena lcun.wwa..aa,Mm<uxe,c./ooP (.,. Baa9h Mc 22606
v yww°<ap_..e ®ofiner.nP�m 9Im"328
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SUB SUB SIRB SIAB SUa STAB
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