20181314 Ver 1_Revised calc packet_20190312

Sediment, Erosion Control, & Stormwater
Calculations
For
HNH Futures, LLC
Boone Storage
Watauga County, NC
January 2019
ow
Inn
JOB NO. 18023
CLAYTON_
ENGINEERING & DESIGN

CLAYTON
ENGINEERING & DESIGN
BOONE 1 WATAUGA STORAGE
BOONE, NC
Project Narrative
HNH Futures plans to develop this existing lot to construct storage units. The existing lot has wetlands that have
been delineated and a 401 permit has been approved. This parcel is located off of Whispering Pines and Old
Hwy 421 in Boone, NC. The site totals 2.157 acres. The PIN for the current property is 2931016509000.
The existing property is mostly wooded with low lying areas currently holding water. [t appears the site was used
as a borrow area in the past. The site is bordered along the east by Whispering Pines and the south by Old Hwy
421.
The project will consist of construction of a storage unit building and parking lot. Stormwater control
requirements will be met with the use of grassed swales and infiltration basins and trenches.
Soil erosion will be controlled with the use of perimeter silt fence, a skimmer basin, and a series of diversion
swales. Approximately 1.51 acres of area will be disturbed during construction. Several temporary diversions
will be utilized to direct flow for erosion control. Silt fence inlet protection will be installed concurrently with the
installation of the new storm drain piping.
Erosion control measures were designed in accordance with NCDEQ Erosion and Sediment Control Planning
and Design Manual, 2006 edition.

DEMLR USE ONLY
Date Received Fee Paid Permit Number
Applicablie Rules: ❑ Coastal SW-1995 ❑ Coastal SW--2008 ❑Ph II-Post Construction
(select all that apply) ❑Non-Coastal SW-HQW/ORW Waters ❑ Universal Stormwater Management PIan
❑ Other WQ M mt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This farm nzay be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans,
specifications,letters,operation and maintenance agreements,etc.):
BOONE STORAGE
2. Location of Project(street address):
OLD HWY 421 &WHISPERING PINES
City:BOONE County:WATAUGA Zip:
3. Directions to project(from nearest major intersection):
FROM HWY 421,TAKE EXIT FOR OLD US 421 AND HEAD WEST.PROTECT WILL BE ON THE RIGHT
TUST PAST WHISPERING PINES ROAD
4. Latitude:36°13' 36" N Longitude:81°36'32" W of the main entrance to the project.
II. PERMIT INFORMATION:
1.a.Specify whether project is (check one): ®New ❑Modification ❑Renewal w/ Modificationt
tRenewals with neodif7cations also requires SWU-102-Renewal Application Form
b.If this application is being submitted as the result of a modification to an existing permit,list the existing
permit number ,its issue date(if known) ,and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* "provide a designer's certification
2. Specify the type of project(check one):
[]Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from
DEMLR requesting a state stormwater management permit application,list the stormwater project number,
if assigned, and the previous name of the project,if different than currently
proposed,
4.a.Additional Project Requirements (check applicable blanks;information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control:1.51 ac of Disturbed Area
❑NPDES Industrial Stormwater M404/401 Permit:Proposed Impacts WETLANDS
b.If any of these permits have already been acquired please provide the Project Name,Project/Permit Number,
issue date and the type of each permit:404 PERMIT NUMBER 39....ACTION ID SAW-2018-01924
5. Is the project located within 5 miles of a public airport? ®No []Yes
If yes, see S.L. 2012-200, Part VI:htti2://Vortal.iicdenr.org/wehZLrLrules-ai-id-regulations

III. . CONTACT INFORMATION
1.a.Print Applicant/ Signing Official's name and title (specifically the developer,property owner,lessee,
designated government official,individual,etc, who owns the project):
Applicant/Organization: C�1jAI � f'S '' 1� ✓;-��,
Signing Official&Title: C�(1 r IeS 14fl g rsk" 0'.-AC✓
b.Contact information for person listed in item I above:
Street Address: _S U f Soh R a A i Pre,6
City: rJ DUA 6 State: Af— Zip: 2-�-6G
Mailing Address (if applicable): ?, G 7 -5 rz e 14 fh,(, 0)-1
City: Roc,,, State: Zip: 2",6G7
Phone: Y/ 0 7 Fax:
Email: U 11 J1J5'_ r L C,mCe; ,ai-1
c.Please check the appropriate box.The applicant listed above is:
®The property owner(Skip to Contact Information,item 3a)
❑Lessee*(Attach a copy of the lease agreement and complete Contact Information,item 2a and 2b below)
❑Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information,item 2a and
2b below)
❑Developer* (Complete Contact Information,item 2a and 2b below.)
2.a.Print Property Owner's name and title below,if you are the lessee,purchaser or developer. (This is the
person who owns the property that the project is located on): j J
Property Owner/Organization: C 1,,k 1 j 1 �k� -I �/_V�'4
Signing Official&Title: C14IL III! 34-
b.Contact information for person listed in item 2a above:
Street Address: i SCoer: r
City: V 6,OA 0- r State: C..__ Zip:
Mailing Address (if applicable): 307 -__.-t ej,e A Z(,mi 0,,rime
City: 131o+e State: Zip:
Phone: (2 S�Z ) V j Y O�-7S7 Fax:
Email: C � Tn�uFf .lGry�
3.a. (Optional)Print the name and title of another contact such as the projects construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization_WILLIAM_S_CLAYTON,_PE_I CLAYTON ENGINEERING&RESIGN
Signing Official&Title:WILLIAM S CLAYTON,_PE_-PRESIDENT
_
b.Contact information for person listed in item 3a above:
Mailing Address:PO BOX 2351
City:HICKORY State:NC Zip:28603
Phone: (828 ) 455-3456 Fax:
Email:WCLAYTON®CLAYTON-ENGINEERING.NET
4. Local jurisdiction for building permits:WATAUGA COUNTY
Point of Contact:NA Phone#:

IV. . PROJECT INFORMATION
1. In the space provided below,briefly summarize how the stormwater runoff will be treated.
STORMWATER RUNOFF WILL BE COLLECTED IN GRASSED SWALES AND DIRECTED
TO INFILTRATION BASINS
2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑Valid Building Permit Issued Date:
❑Other: Date:
b.If claiming vested rights,identify the regulation(s)the project has been designed in accordance with:
❑Coastal SW-1995 ❑ Ph II-Post Construction
3. Stormwater runoff from this project drains to the NEW RIVER River basin.
4. Total Property Area:2.157 acres 5. Total Coastal Wetlands Area:Q acres
6. Total Surface Water Area:_0 acres
7. TotaI Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6) =Total Project
Area+: 2.157 acres
+ Total project area shall be calculated to exclude the following, the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water(NH W)line or Mean High Water
(MHW)line, and coastal wetlands landward from the NHW(or Ml*Iq line. The resultant project area is used to
calculate overall percent built upon area(B i.lA). Non-coastal wetlands landward of the NHW(or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area/ Total Project Area)X 100 =0.44 %
9. How many drainage areas does the project have?1 (For high density, count 1 for each proposed engineered
Stormwater BMP. For low density and other projects,use I for the whole properhj area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project,attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information Drainage Area_ Drainage Area_ Drainage Area_ Drains e Area_
Receiving Stream Name Brown branch
Stream Class *
Stream Index Number
Total Drainage Area(sf) 93958
On-site Drainage Area(sf) 93958
Off-site Drainage Area(sf) 0
Proposed Impervious Area* s 4 Ll 29
% Impervious Area** (total) 0.44
Impervious-Surface Area Drainage Area_ Drainage Area_ Drainage Area_ Drainage Area_
On-site Buildings/Lots (sf) 143004. 1
On-site Streets (so
On-site Parking (sf) .47374- of
On-site Sidewalks (so
Other on-site (sf)
Future (sf) 0
Off-site (sf) 0
Existing BUA***(sf) 0
Total (sf): 4"74- �z
Stream Class and Index Number can be determined at: http://portal.ncdenr.org zveb/wq/ps/csu/cIassi cations
Impervious area is defined as the built upon area including, but not limited to, buildings,roads,parking areas,
sidewalks,gravel areas, etc.

***Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off--site impervious area listed above determined?Provide documentation.na
Projects in Union County: Contact DEMLR Central Office staff to check if the project is located within a Threatened&
Endangered Species watershed that may be subject to more stringent stormwater requirements as per 15A NCA C 02B.0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M)forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.org/web/wq/ws/su/bnzp-r»anual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Energy,Mineral and
Land Resources (DEMLR). A complete package includes all of the items listed below. A detailed application
instruction sheet and BMP checklists are available from
http://_portal.n_cdenr.org/%,,eb/wq/ws/sulstatesw/forms does. The complete application package should be
submitted to the appropriate DEMLR Office. (The appropriate office may be found by locating project on the
interactive online map athgp://portal.ncdeny.org/web/wq/­­ws/su/­maps)
Please indicate that the following required information have been provided by initialing in the space provided
for each item.All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from httl2://12ortal.ncdenr.org/web/wq/ws/su/statesw/forms_docs.
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions &Protective Covenants r`
Form. (if required as per Part VIL below)
3. Original of the applicable Supplement Form(s) (sealed,signed and dated)and O&M
agreement(s)for each BMP.
4. Permit application processing fee of$505 payable to NCDENR. (Far an Express review,refer to
http://www.envhelp.org/pages/onestopexpress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative(one to two pages) describing the stormwater treatment/management f
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within 1/2 mile of the site boundary,include the 1/2
mile radius on the map.
7. Sealed,signed and dated calculations (one copy).
8. Two sets of plans folded to 8.5" x 14" (sealed,signed,&dated),including:
CA-
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow,
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures,the banks of streams and rivers,the MHW or NHW line of tidal
waters,and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures,the banks of streams or rivers,and the MHW (or NHW)of tidal waters.
i. Dimensioned property/project boundary with bearings& distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours,proposed contours,spot elevations,finished floor elevations.
I. Details of roads, drainage features,collection systems,and stormwater control measures.
m.Wetlands delineated,or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
Ti. Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations.
o. Drainage areas delineated (included in the main set of plans,not as a separate document).

p. Vegetated buffers(where required).
9. Copy of any applicable soils report with the associated SHWT elevations(Please identify
elevations in addition to depths)as well as a map of the boring locations with the existing
elevations and boring logs.Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs,the report should also
include the soil type,expected infiltration rate,and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO:Schedule a site visit for DEMLR to verify the SHVVT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: 075 Page No: --
11. For corporations and limited liability corporations(LLC):Provide documentation from the NC
Secretary of State or other official documentation,which supports the titles and positions held
by the persons listed in Contact Information,item la,2a,and/or 3a per 15A NCAC 2H.1003(e).
The corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State,otherwise the application will be returned.
ham://www.secretgry.state.nc.us/Corporations/CSearch.aMx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions,outparcels,and future development,the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary,a table listing each lot number,lot size,and the allowable built-upon area must be
provided as an attachment to the completed and notarized deed restriction form. The appropriate deed
restrictions and protective covenants forms can be downloaded from htip.-/Iportai.iicdenr.org/web/ir/state-
storniwater-fornis dots.Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner,it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s)below,the permit holder(s)certify that the recorded property restrictions and
protective covenants for this project,if required,shall include all the items required in the permit and listed
on the forms available on the website,that the covenants will be binding on all parties and persons claiming
under them,that they will run with the land,that the required covenants cannot be changed or deleted
without concurrence from the NC DEMLR,and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm(such as a
consulting engineer and/or firm)so that they may provide information on your behalf for this project(such as
addressing requests for additional information).
Consulting Engineer:WILLIAM S CLAYTON PE
Consulting Firm:CLAYTON ENGINEERING &DESIGN
Mailing Address:PO BOX 2351
City:HICKORY State:NC Zip:28603
Phone: (828 ) 455-3.456 Fax: ( }
Email:[e-mail]
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or hjpe name of person listed in Contact Information, item 2a) C�4lZL ,�ot.usinti ,certify that I
own the property identified in this permit application,and thus give permission to (print or hjpe name of person
listed in Contact Information,item 1a) with (print or type name of organization listed in
Contact Information, item 1a) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal,which indicates the
party responsible for the operation and maintenance of the stormwater system.

As the legal property owner I acknowledge,understand,and agree by my signature below,that if my designated
agent(entity listed in Contact Information,item 1) dissolves their company and/or cancels or defaults on their
lease agreement,or pending sale,responsibility for compliance with the DEMLR Stormwater permit reverts back
to me,the'property owner. As the property owner,it is my responsibility to notify DEMLR immediately and
submit a completed Name/Ownership Change Form within 30 days;otherwise I will be operating a stormwater
treatment facility without a valid permit. I understand that the operation of a stormwater treatment facility
without a valid permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement
action including the assessment of civil penalties of up to$25,000 per day,pursuant to NCGS 143-215.6.
Signature: Date:__� � 01I_
I, An, r-61";{1 a Notary Public for the State of Nm County of
CQ.'11 Z k,,1 & do hereby certify that C atk 1����'�.r personally appeared
before me this-LE day of �n m j C , .2o)9 and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
da let, SEAL
�C Notary
Public
My commission expires
Coun�1�
X. APPLICANT'S CERTIFICATION J j
I, (print or hjpe nazzze of person listed in Contact Information, itenz 1a) d 4 t,L pa l(os',4/
certify that the information included on this permit application form is,to the best of my knowledge,correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded,and that the proposed project complies with the requirements of the
applicable stormwater rul s under 15A NCAC 2H .1000 and any other applicable state stormwater requirements.
Signature: L�174 Date:
1, fY� (�,�C� rye. n a Notary Public for the State of U C.r�L 0 Cd n ct .County of
do hereby certify that c t 1 S r personally appeared
before me this day of__w i o,T y Q ,and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal, J In
a ��® SEAL
Notary
Public
�(D My commission expires
1,4 Cut

Operation & Maintenance Agreement
Project Name: BOONE STORAGE
Project Location: OLD US HWY 421, BOONE, NC
Cover Page
Maintenance records shall be kept on the following BMP(s). This maintenance record shall be kept in a log in a known set
location. Any deficient BMP 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 BMP(s).
The BMP(s)on this project include (check all that apply &corres onding O&M tables will be added automatically):
Bioretention Cell Quantity: Location(s):
Dry Detention Basin Quantity: Location(s):
Grassed Swale Quantity: Location(s):
Green Roof Quantity: Location(s):
Infiltration Basin Quantity: Location(s):
Infiltration Trench Quantity: 2 Location(s): ON SITE
Level SpreaderNFS Quantity. Location(s):
Permeable Pavement Quantity: Location(s):
Proprietary System Quantity: Location(s):
Rainwater Harvesting Quantity: Location(s):
Sand Filter Quantity: Location(s):
Stormwater Wetland Quantity: Location(s):
Wet Detention Basin Quantity: 0 Location(s):
Disconnected Impervious Area Present: No Location(s):
User Defined BMP Present: No Location(s):
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed
for each BMP above, and attached O&M tables. I agree to notify NCDENR of any problems with the system or prior to any
changes to the system or responsible party.
* Responsible Party: t j.0
Title &Organization: ttpW Fi.IT"A-16:s
Street address: 30-? SG Z ,-
City, state, zip: oor-t , XC_ 2�ba
Phone number(s): b , _ 9�,S
Email: 46
Signature: _ �` / Date:
I, a Notary Public for the State of
County of Ccla r do hearby certify that , kr
personally appeared before me this 1 47 day of �JP�,ntJAr„ �� t and
acknowledge the due execution of the perations and Maintenance Agreement .
Witness my hand and official seal,
C
ary V
licouin'�,

Infiltration System Maintenance Requirements
Important maintenance procedures:
-The drainage area will be carefully managed to reduce The sediment load to The infiltration basin.
Immediately after the infiltration basin is established.,the vegetation will be watered twice weekly if needed until
the plants become established (commonly six weeks).
_ No portion of the infiltration basin will be fertilized after the initial fertilization that is required to establish the
vegetation.
- The vegetation in and around the basin will be maintained at a height of approximately six inches.
After the infiltration basin is established, it shall be inspected once a quarter 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.
BMP element: Potential problem: How to remediate the problem:
The entire BMP Trash/debris is present. Remove the trash/debris.
The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to remove the gully, and then plant a
infiltration basin erosive gullies have formed. ground cover and water until it is established. Provide lime and a one-
time fertilizer application.
The inlet device: pipe or The pipe is clogged (if Unclog the pipe. Dispose of the sediment off site.
Swale applicable).
The pipe is cracked or Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the Regrade the swale if necessary to smooth it over and provide erosion
swale(if applicable). control devices such as reinforced turf matting or riprap to avoid future
problems with erosion.
The forebay Sediment has accumulated Search for the source of the sediment and remedy the problem if
and reduced the depth to 75% possible. Remove the sediment and dispose of it in a location where it
of the original design depth. will not cause impacts to streams or the BMP.
Erosion has occurred or Provide additional erosion protection such as reinforced turf matting or
riprap is displaced. riprap if needed to prevent future erosion problems.
Weeds are present. Remove the weeds, preferably by hand. If pesticides are used,wipe
them on the plants rather than spraying.
The main treatment area A visible layer of sediment Search for the source of the sediment and remedy the problem if
has accumulated. possible. Remove the sediment and dispose of it in a location where it
will not cause impacts to streams or the BMP. Replace any media
that was removed in the process. Revegetate disturbed areas
immediately.
Water is standing more than Replace the top few inches of filter media and see if this corrects the
5 days after a storm event. standing water problem. If so, revegetate immediately. If not, consult
an appropriate professional for a more extensive repair.
Weeds and noxious plants Remove the plants by hand or by wiping them with pesticide (do not
are growing in the main spray).
treatment area.
The embankment Shrubs or trees have started Remove shrubs or trees immediately.
to grow on the embankment.
An annual inspection by an Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device Clogging has occurred. Clean out the outlet device. Dispose of the sediment off-site.
The outlet device is damaged Repair or replace the outlet device.

The receiving water Erosion or other signs of Contact the local NC Department of Environment and Natural
damage have occurred at the Resources Regional Office.
outlet.

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MAIL To :
''HNH FUTURES ) LLC
31� SCENE A RAMA
BLOWING ROCK , NC 28605
excise Tax $350.00
IN 2931016509000
NORTH CAROLINA GENERAL WARR,4
Prepared without benefit of title examination and/or surrey. The drafting
Attorney and did not disburse any funds or closing p
nef scr Lion for the hidex:
are (239' a
made t
day b anal b 9
�d� ba ITT` o
agingn any xr ties erX
and not joining in any warranties of title), and T.
GRANTORS, whose nailing address is: c/o 1261 Roby Greene oa :
"28607 and HNH FUTURES, LLC, a North Carolinaits Lip
TEE, whose mailing address is.
307 scene Marna, Blowing
w;
The designations "'Grantors"' and "Grantee" as used herein shy
rs, successors, and assigns, and shall include singular, plural, mas
wired by context.
�f .

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
.,
PROJECT INFORMATION
1 Project Name BOONE STORAGE
57._.._..................
3 Coastal Wetland Area ac) 0
4 I Surface Water Area ac) 0
5lsthis project High or Low --
6 ;Does this project use an off-site SCM? No
COMPLIANCE WITH 02H.1003(4)
7 Width of vegetated setbacks provided feet)
-._... —_..._._...... .............................
8 Will the vegetated setback remain v�'9etated? -- Yes
L9 Is BL1A other that as listed in.1003(4)(c-d)out of the setback? _ —_ —_-- _ Yes
q I Is stream bank stabilization proposed on this project? No
NUMBER AND TYPE OF SCMs: xw
11 infiltration S . .. . _....._...__..._ _ __. .._._.... -_ ........._.. _._..._.... — ..
12 Bioretention Cell 0
-_..._........................._......_........_.._........._....................................---
13 Wet Pond 0
14 Stormwater Wetland 0
15 Permeable Pavement ' 0
16 Sand Filter I 0
17 Rainwater Harvesting(RWH) _.._. _ _.._............_ _ _.0
18 Green Roof 0
19 Level Spreader-Filter Strip(LS-FS) - _____............_.__......._............0..._..
20 Disconnected Impervious Surface(D1S) - 0
21 Treatment Swale - -- 0
�22
Dry Pond 0
— - ._.._.._..__. ----
23 ;StormFilter 0
_............-...,..._....I.................. ... _._ _ _....__... __ .... ._
24 Silva Cell 0
25 Bayfilter I 0
26 Filterra 0
FORMS LOADED
DESIGNER CERTIFICATION
27 Name and Title: WILLIAMS CLAYTON. PE
_.... .... ......... .._... _ ._—_..— _.—_._.�__._..... --. ._.. — ... _
28 Or an¢ation: CLAYTON ENGINEERING&DESIGN
29 Street address: PO BOX 2351
—_..._..................................._.............._...._......_......._._.._ -
30 City,State,Zip: HICKORY,NC 28603
......_ ._..__ ._........ — --._._...._..__..
31 Phone number(s) 828-455-3456
— .._...._. ....__..-_..._._..............._.. ..................__......____
32 Email: [e-mail]
Certification Statement:
I certify,under penalty of law that this Supplement-EZ form and all supporting information were prepared under my direction or
supervision;that the Information provided in the form is,to the best of my knowledge and bellef,true,accurate,and complete;and
that the engineering plans,specifications,operation and ma�ntenance agreements and other supporting information are consistent
with the information provided here.
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DRAINAGE AREAS
1 Is this a hi h density project? Yes
2 If so,number of drainage areas/SCMs 1
Is alllpart of this project subject to previous rule
3 versions? No
FORMS LOADED
DRAINAGE AREA INFORMATION Entire'Site 1
4 T e of SCM
5 Total BUA in roject s ft 43529 sf
New BUA on subdivided lots(subject to permitting)
6 (sq ft sf
New BUA outside of subdivided lots(subject to
7permitting) s sf
8 Offsite-total area(sq ft sf
9 Offsite BUA(sq ft sf
10 Breakdown of new BUA outside subdivided lots: 0
Parkin s ft 29101 sf
-Sidewalk(sq ft
Poof(sq ft 14428 sf
Roadway s ft
-Future(59 ft
-Other,please specify in the comment box
below(sq ft
New infiltrating permeable pavement on
ill subdivided lots(sq ft sf
New infiltrating permeable pavement outside of
12 subdivided lots(sq ft sf
Exisitng BUA that will remain(not subject to
13permitting) s ft sf
14 1 Existing BUA that is already permitted(sq ft sf
15 Existing BUA that will be removed(sq ft sf
16 Percent BUA 44%
17 Design storm inches 1 in
18 Design volume of SCM cu ft 5836 cf
19 Calculation method for design volume
ADDITIONAL'INFORMATION
Please use this space to provide any additional information about the
20 drainage area(s):

INFILTRATION SYSTEM
1 ]Drainage area number 1 2
2 1 Design volume of SCM(cu ft) 5836 cf
GENERAL MDC FROM 02H.10S0
3 Is the SCM sized to treat the SW from all surfaces at build-out? Yes
4 Is the SCM located away from contaminated soils? Yes
5 What are the side slopes of the SCM(H:V)? 3:1
6 Does the SCM have retaining walls,gabion walls or other engineered side slopes? No
7 Are the inlets,outlets,and receiving stream protected from erosion(10-year storm)? Yes
8 Is there an overflow or bypass for inflow volume in excess of the design volume? Yes
9 What is the method for dewatering the SCM for maintenance? Other
10 If applicable,will the SCM be cleaned out after construction? Yes
11 Does the maintenance access comply with General MDC(8)? —���— - WYes
12 Does the drainage easement comply with General MDC(9)? Yes
If the SCM is on a single family lot,does(will?)the plat comply with General MDC
13 (10)? Yes
14 Is there an O&M Agreement that complies with General MDC(11)? Yes
15 Is there an O&M Plan that complies with General MDC(12)? Yes
16 Does the SCM follow the device specific MDC? Yes
17 Was the SCM designed by an NC licensed professional? Yes
INFILTRATION SYSTEM MDC FROM 02H.1051
18 Proposed slope of the subgrade surface(%} 0%
19 Are terraces or baffles provided? No
20 IType of pretreatment: Forebay
Soils Data
Was the soil investigated in the footprint and at the elevation of the infiltration
21 system? Yes
22 SHWT elevation(fmsl) 487,00
23 Depth to SHWT per soils report(in) 3.00
24 Ground elevation at boring in soils report(fmsl) 490.00
25 Is a detailed hydrogeologic study attached if the separation is between 1 and 2 feet? No
26 Soil infiltration rate(Inlhr) 0.50
27 Factor of safety(FS) (2 is recommended): 2.00
Elevations
29 Bottom elevation(fmsl) 495 ft
34 IStorage elevation(fmsl) 496.ft
31 1 Bypass elevation(fmsl) 496 ft
For Basins Only
32 Bottom surface area,ft2: 2918 ft
33 1 Storage elevation surface area(ft2) 493.ft
For Trenches Only
34 Length(ft)
35 Width(ft)
36 Perforated pipe diameter,if applicable(inches)
37 Number of laterals
38 Total length of perforated piping
39 Stone type,if applicable
40 Stone void ratio(%)
41 Is stone free of fines?
42 Is the stone wrapped in geotextile fabric?
43 Has at least one infiltration port been provided?
Volumes/Drawdown
44 Design volume of SCM(cu ft) 5836 cf
45 Time to drawdown(hours) 7 hrs
ADDITIONAL INFORMATION
Please use this space to provide any additional information about the infiltration
46 system(s):