SW4101202_CURRENT PERMIT_20110321

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SWw1h 4�)O
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
a&l& ,� u
YYYYMMDD

�1 RECEIVED
N.C. oeot. i. ofof ENQ
NCDENR MAR 2 12011
North Carolina Department of Environment and Natural Resources ""n5rnn.Sa;e
Rogional Office
Division of Water Quality
Beverly Eaves Perdue
Governor
Mr. George Powell
Allen Precision
420 Industrial Drive
Asheboro, NC 27205
Coleen H. Sullins
Director
February 18, 2011
Subject: Stormwater Permit No. SW4101202
Allen Precision, Inc.
High Density Wet Pond Project
Randolph County
Dear Mr. Powell:
Dee Freeman
Secretary
The Stormwater Permitting Unit received a complete Stormwater Management Permit Application for Allen
Precision Inc. on February 16, 2011. Staff review of the plans and specifications has determined that the project,
as proposed, will comply with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000 and Session Law
� : c==? 6;246. We are forwarding Permit No. SW4101202, dated today's date, for the construction, operation and
maintenance of the subject project and stormwater BMPs.
This permit shall be effective from the date of issuance until February 17, 2021, and shall be subject to the
conditions and limitations as specified therein, Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for inspection and maintenance of the
stormwater management system will result in future compliance problems.
a
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request
an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request
must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and
filed with the Office of Administrative Hearings, PO. Drawer 27447, Raleigh, NC 27611-7447, Unless such
demands are made this permit shall be final and binding.
This project will be kept on file at the Winston-Salem Regional Office. If you have any questions, or need
additional information concerning this matter, please contact Cory Larsen at [phone] or
cory-larsen@nc:denr.gov.
incerely,
r
for Co een H. Sul in
cc: Winston-Salem Regional Office
SPU Files
Mr. H. Mack Summey, PE, Summey Engineering Associates, PO Box 968, Asheboro, NC 27204
Wetlands and Slormwater Branch One
1617 Mail Service Center, Raleigh, North Carolina 27699.1617 North Carolina
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: 919-807•fi4941 Customer Service: 1.877.623.6748 Naturally
Internet: www.ncwaterquality.org
An Equal Opportunity l Affirmative Action Employer
.i•

State Stormwater Permit
Permit No.SW4101202
RECEIVED -
STATE OF NORTH CAROLINA ER
C. DOW. of FNc
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES 1 2011
DIVISION OF WATER QUALITY egionaC'•� ; - i
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Allen Precision / George Powell (Owner)
Allen Precision, Inc. (Project)
Veterans Loop Road, Asheboro, Randolph County
FOR THE
construction, operation and maintenance of a'wet detention basin in compliance with the provisions of
15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the "storm waterrules'l and the
approved stormwater management plans and specifications and other supporting data as attached
and on file with and approved by the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until February 17, 2021, and shall be subject to
the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in
the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.6 of this permit. The stormwater control has been designed to handle
the runoff from 119.539 square feet of impervious area (includes 19,727 SF of future
impervious area).
3. The drainage area tract will be limited to the amount of built -upon area indicated above and
per the approved plans (58.7% impervious area). The total impervious percentage of the
entire property is limited to 14.7%.
4. All stormwater collection and treatment systems must be located in either dedicated common
areas or recorded easements. The final •pl6fs for the project will be recorded showing all such
required easements, in accordance with -the approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this project must be
directed into the permitted stormwater control system.
6. The following design criteria have been provided in the wet detention pond and must be
maintained at design condition:
Wet Detention Basin for drainage area 1 as per the attached approved Wet Detention
Basin Supplement Form dated December 3, 2010 and approved February 18, 2011.
Page 1 of 6

State Stormwater Permit
Permit No.SW4101202
b. Receiving Streams/River Basin
C. Stream Index Numbers:
d. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
UT to Little River / Yadkin -Pee Dee
13-25-(1)
„C„
1. The stormwater management system shall be constructed in its entirety, vegetated and
operational for its intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a -minimum and any eroded areas of the system
will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to assure
the permitted stormwater system functions at optimum efficiency. The approved Operation
and Maintenance Plan must be followed in its entirety and maintenance must occur at the
scheduled intervals including, but not limited to:
a. Semiannual scheduled inspectionsc:(everyi61months).
b. Sediment removal. s
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow spreader, catch
basins and piping.
a. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of person
performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit shall become
voidable unless the facilities are constructed in accordance with the conditions of this permit,
the approved plans and specifications, and other supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and prior to
operation of this permitted facility, a certification must be received from an appropriate
designer for the system installed certifying that the permitted facility has been installed in
accordance with this permit, the approved plans and specifications, and other supporting
documentation. Any deviations from the approved plans and specifications must be noted on
the Certification. A modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be restored to design
condition prior to operation as a stormwater treatment device, and prior to occupancy of the
facility.
8. Access to the stormwater facilities shall be maintained via appropriate easements at all times.
9. The permittee shall submit to the Director and shall have received approval for revised plans,
specifications, and calculations prior to construction, for any modification to the approved
plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the stormwater
management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the drainage
area.
e. Further subdivision, acquisition, lease or safe of all or part of the project area. The
Page 2 of 6

State Stormwater Permit
Permit No.SW4101202
project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit was sought,
Filling in, altering, or piping of any vegetative conveyance shown on the approved
plan.
10. The permittee shall submit final site layout and grading plans for any permitted future areas
shown on the approved plans, prior to construction.
11. A copy of the approved plans and.specifications shall be maintained on file by the Permittee
for a minimum of ten years from the date of the completion of construction.
12, The Director may notify the permittee when the permitted site does not meet one or more of
the minimum requirements of the permit. Within the time frame specified in the notice, the
permittee shall submit a written time schedule to the Director for modifying the site to meet
minimum requirements. The permittee shall provide copies of revised plans and certification in
writing to the Director that the changes have been made.
lil. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the event
of a change of ownership, or a name change, the permittee must submit a completed
Name/Ownership Change form, to the Division of Water Quality, signed by both parties, and
accompanied by supporting documentation as' listed on page 2 of the form. The project must
be in good standing with the Division. The approval of this request will be considered on its
merits and may or may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such time as the
Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with North
Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances, which may be imposed by other government
agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be
required by this Division, such as the construction of additional or replacement stormwater
management systems.
6. The permittee grants DENR Staff permission to enter the property during normal business
hours for the purpose of inspecting all components of the permitted stormwater management
facility, v: i
h
7. The permit issued shall continue in force and effect until revoked or terminated. The permit
may be modified, revoked and reissued or terminated for cause, The filing of a request for a
permit modification, revocation and re -issuance or termination does not stay any permit
condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater control must
follow the guidelines established in the North Carolina Erosion and Sediment Control Planning
and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit,
10. The issuance of this permit does not prohibit the Director from reopening and modifying the
permit, revoking and reissuing the permit, or terminating the permit as allowed by the laws,
Page 3 of 6

State Stormwater Permit
Permit No.SW4101202
rules and regulations contained in Session Law 2006-246, Title 15A NCAC 2H.1000, and NCGS
143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing address changes at
least 30 days prior to making such changes.
12. The permittee shall submit a renewal request with all required forms and documentation at
least 180 days prior to the expiration date of this permit.
Permit issued this the 181' day of February 2011.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
forColeen W. 5ullins, Directo
Division of Water Quality
By Authority of the Environmental Management Commission
Page 4 of 6

State Stormwater Permit
Permit No.SW4101202
ALLEN PRECISION
Stormwater Permit No. SW4101202
Randolph County
Designer's Certification
I, , as a duly registered in the State of
North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of
the project,
Allen Precision
(Project)
for (Project Owner) hereby state that, to the best of my abilities,
due care and diligence was used in the observation of the project construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specificaEion:
Signature
Registration Number
Date
SEAL
Page 5 of 6

State Stormwater Permit
Permit No.SW4101202
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -
upon area.
3. All built -upon area associated with the project is graded such that the runoff drains to
the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 11.
10. The inlets are located per the approved -plans and do not cause short-circuiting of the
system.
11. The permitted amounts of surface area and/or volume have been provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: DWQ Winston-Salem Regional Office
Surface Water Protection
585 Waughtown Street
Winston-Salem, NC 27107
Page 6 of 6

Permit fro. SW f ! a 1Z OZ
fro be provided by DWQ)
RECEIVED
N.C. �eoi. of ENR
MAR 2 1 2�11
Winston-Salem 1
RegionalOf`�ce III
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required llems Checklist (Part 111) must be printed, filled out and submitted along lvilh all of the reglfifed inlormalion.
I. -PROJECT- INFORMATION
Project name Allen Precision
Contact person H.Mack Summay, Jr„ PE . SEA, PLLC, PO Box 968 Asheboro NC 27204
Phone number 336.328.0902
Date IPJdr2010
Drainage area number 1
Il..DESIQN INFORMATION
Site Characteristics
APpro►• <.; ' l •...,L_: ��ments
Drainage area
203.550 rye
�bwiol; ; - , ; ,, these documents Is
Impervious area, post -development
119.539 f>e
MgLd lsd the Stornlwatef ,; ntit. Nofth Ceroiirtn
°6 impervious
58.73 %
ft1w that the stormwarar system desigrtr
Design rainfall depth
1.0 in
)AS eonstructien; cer''fy conformity w1h ft
PIBISarplVam; and certify compliance with the
Storage volume: Non -SA Waters
Minimum volume required
9,8W q3
storirll"lO12r 15A NCAC [H .1008(j))
OK Pern* S L Ca;
Volume provided
13,364 01
by NC Dhrision of Water guft
d
OK, volum S e ua to r 1n ex ss of u
„„ �����&te tL V
Storage Volume: SA Waters
�`
1.5' runoff volume
Pre -development I•yf, 24•hr runoff
Post•development 1-yr, 24•hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the prelposl control of the lyr 24hr storm peak Ilow required?
1 •yr, 24•hr rainfall depth
Rational C, pre•development
Rational C. post•devolopment
Rainfall intensity: 1-yr, 24-hr storm
Pre -development 1-yr, 24•hr peak Ilow
Post -development 1•yr, 24•hr peak flow
PrPJPost 1-yr, 24•hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the perm. pod elevation)
Top of 10ft vegetated shell elevation
Bottom of Wit vegetated shelf elevation
Sediment ctean0ul, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stared above the state -required temp, pool?
Elevation of the top of the additional voume
Y (Y or N)
2.8 in
0.25 (unitless)
0.60 (unittess)
0,12 irVhr OK
3.26 it'lsec
8.95 itllsec
5.69 ft�lsec
805,00 fmsl
803.50 fmsl
795.00 fmsl
804,00 fensl
803,00 fmsl
800,50 fmsl
799.00 fmsl
1,50 it
��;�� 26�1•;7
(Y or N)
lmsi o "
Put r! �+
Falm SW401-Wet Detention easin•Rev.6•917,09 Pans 1.6 11 Design Summary, Page 1 of

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Permit No. S w Lt 1 0 124 2
fro be provided by D WO)
II. DESIGN INFORMATION .
Surface Areas
Area, temporary pool
10,371 ft2
Area AEOUIRED, permanent pool
6,636 It'
SArDA ratio
3.26 (unittess)
Area PROVIDED, permanent pool, Am a,,,
7,447 it"
OK
Area, bottom of 1011 vegetated shell, A,,, ,
5,8m h`
Area, sediment cleanouL lop elevation (bottom of pond), Aw, ro,,,
2,635 tt`
Volumes
Volume, temporary pool
13,364 hl
OK
Volume, permanent pact, Vyn m,,
15,554 h'
Volume, Iorebay (sum of forebays if more than one forebay)
3,144 h'
Forebay "o of permanent pool volume
20.21.0 4e
OK
SAIDA Table Data
Design TSS removal
90 °5
Coastal SAlDA Table Used?
N (Y or N)
Mountairditclmonl SArDA Table Used?
Y (Y or N)
SA;DA ratio
3.26 (unilless)
Average depth (used in SA+DA table):
Calculation option I used? (See Figure 10.2b)
N (Y or N)
Volume, permanent pool, V„_ D,„
15,554 It'
Area provided, permanent pool. A,„n, xv
7,447 h`
Average depth calculated
3.00 it
OK
Average depth used in SAMA, d,,, {Round to nearest 0.5ft)
1t
Calculation option 2 used? (See Figure 10.2b)
Y (Y 0r N)
Area provided, permanent pool, Pt4-.rW
7,447 1t`
Area, bottom of l0fl vegetated shell. A,,,.,r„
5336 tt`
Area, sediment cleanouL lop elevation (bottom at pond), A,,, r,n,
2,635 fe
'Depth' (distance VW bottom of loft Shell and top of sediment)
2.50 h
Average depth calculated
3.00 it
OK
�%
Average depth used in SA1DA, d,,, (Round to nearest 0.5h)
3.0 it
OK
,`� �,� . •- {'�
DrawdownCalculationa
Drawdown through orifice?
Y (Y or N)
r ;
Diameter of orifice (if circular)
1.25 in
�A L
Area of orifice (ft•non•circular)
in'
447
J. •. 26
Coeflicfenl of discharge {C0)
Drivinghead
0.60 (unilless)
1.50h
'� •,�.,;,Cr,,�cf..•i �`\
(H,)
Drawdown through weir?
N (Y or N)
Weir type
(unilless)
Coefficient of discharge (Q
(unilless)
Length of weir (L)
f1
Driving head (H)
it
Pre -development 1-yr, 24-hr peak flow
326 h'Isec
Post -development 1 •yr, 24•hr peak Ilow
6.95 h'/sec
Storage volume discharge rate (through discharge orifice or weir)
0.05 ft"Isec
Storage volume drawdown lime
3.07 days
OK, draws
down in 2.5 days.
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of ftowpalh to width ratio
Length to width ratio
Trash rack for overflow 3 orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build -out?
Drain mechanism for maintenance or emergencies is:
3 :I
OK
10 :1
OK
10.0 it
OK
3 :I
OK
10 :1
OK
Y
(Y or N)
OK
1.0 it
OK
N
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
Gate Valve on Riser to drain water
Form SW401-Wei Derenlion BaSin•ReV,6-9'17M Pans I. & 11- Design Summary. Page 2 or 2

Permit Number: S V� 1 t71 'L 0 2
(to be provided by DWQ)
Drainage Area Number: I
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will 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 removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
Stable groundcover should be maintained in the drainage area to reduce the
sediment Ioad to the wet detention basin.
If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive guIIies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide time and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 1 of 4

Permit Number: 5wq 10 ( 7,01—
(to be provided by DWQ)
Drainage Area Number: I
BMP element:
Potential roblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
Swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the pIants.rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray),
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.4 Page 2 of 4

Permit Number: S w Lf 10 t u 'r-
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicableL
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 Iocal NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 3.0 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 3.0 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
0 Permanent Pool Elevation 803.5
Sediment Removal 800.5 Pe anen Pool
------------ -- volume Sediment Removal Elevation 800.50 Volume
Bottom Elevatio 744 -ft Min.
-------------------------------------------- ------
Sediment Bottom Elevation 799 1-ft n
Storage Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.4 Page 3 of 4

Permit Number: 5 C,✓ `f i o f 2-o Z
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Allen Precision
BMP drainage area number: l
Print name. (:re.ct•qt_-
Title:/Partner
Address:420 Industrial Drive, Asheboro, NC 27205
Phone:
Signature: 1 l cV f rb�/
Date: I Z- I `6 /0
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
EI-5CFI1 Dc L-ce.- , , a Notary Public for the State of
1-1A C , County of 1_at+--c.ln 1 �._ln , do hereby certify that
CPO UU e_ 0 personally appeared before me this A_
day of�y�.,�✓ and acknowledge the due execution of the
forgoing t enfio a in aintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires a - a3-1 PJ
Form SW40I-Wet Detention Basin O&M-Rev.4 Page 4 of 4

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T"Em
Date
eceiv d
Fee Paid
Permit Number
S
Applicable Rules: Ef Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post onstruction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may 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.):
Allen Precision. Inc.
2. Location of Project (street address):
end of Veterans Loop Rd. _
City:Asheboro County:Randolph Zip:27203
3. Directions to project (from nearest major intersection):
From intersection of US Highway 64 and US Hw 22220 By -Pass. Go South on US Hwy 220, take McDowell Rd.
Exit and turn Ieft. Go to US Hw_y 220 Bus. South and turn right. Turn right on Southmont and then right onto
Veterans Loop Rd. Road dead ends into property.
4. Latitude:35° 66' 31" N Longitude:79° 83' 45" W of the main entrance to the project.
H. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
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 DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, N/A 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: 10 ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
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: Land Disturbance Permit has been obtained.
Allen Precision.
Form SWU-101 Version 07Iuly2009 Page 2 of 6

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 theproject):
Applicant/Organization: Allen Precision _
Signing Official & Title: George Powell
b.Contact information for person listed in item 1a above:
Street Address:420 Industrial Drive
City:Asheboro State:NC Zip:27205
Mailing Address (if appIicable):420 Industrial Drive
City:Asheboro State:NC Zip:27205
Phone: (336 ) 625-1122
Email: [e-mail]
Fax: (336 __) 625-5358
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.)
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):
Property Owner/Organization: -
Signing Official & Title:
b.Contact information for person listed in item 2a above:
Street Address:
City:
Mailing Address (if appIicable):
City:
Phone: f 1
Email:
State:
State:
Fax: ( )
Zip:
3. a. (Optional) Print the name and title of another contact such as the. project's construction supervisor or other
person who can 6nswer questions about the project:
Other Contact Person/Organization: H. Mack Summey, Jr.
Signing Official & Title:Mr. George Powell, Owner/Partner
b.Contact information for person listed in item 3a above:
Mailing Address: PO Box 968
City:Asheboro State:NC Zip:27204
Phone: [phone] Fax: (336 L328-0922
Email: mack®asheboro.com
4. Local jurisdiction for building permits: Asheboro
Point of Contact:Mr. Larry Trotter Phone #: (336 ] 626-1204x231
Form SWU-101 Version 073uly2409 Page 2 of 7

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
All Impervious surface area runoff will be directed to a permanent detention pond sized to treat 90% TSS.
The pond will be used to reduce peak flows down from 10 & 2 yr. post conditions to 10 & 2
pre/conditions.
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.Identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ® Ph 11 - Post Construction
3. Stormwater runoff from this project drains to the Yadkin River basin.
4. Total Property Area: 18.56 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7_ Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area+:18.56 acres
Total project area shall be calculated to exclude thefollowing: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal T h Water (NFW line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHT�9 line. The resultant project area is used to
calculate overall percent built upon area (BUA). 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 =14.06 %
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 1 for the whole property 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.
Form SWU-101 Version 07July2009 Page 3 of 7

Basin Information
Drainage Area 1
DrainMe Area 2
Draina a Area 3
Drainage Area 4
Receiving Stream Name
UT to Little
River
Stream Class
C
Stream index Number *
13-25-(1)
Total Drainage Area (sf)
203,550
On -site Drainage Area (sf)
203,550
Off -site Drainage Area (sf)
0
Proposed Impervious Area" (sQ
1 114,746
Impervious Area** total
56.40%
Im ous" Surface Area
Drainage Area 1
DrainMe Area 2 11
Draing Area 3
Drainage Area 4
On -site Buildings/Lots (so
48750
On -site Streets (so
0
On -site Parking (so
48917
On -site Sidewalks (sf}
2145
Other on -site (so
0
Future (sf)
19,727
Off -site. (so
0
W
Existing BUA*** (sf)
Total (sf):
119,539
* Stream Class and Index Number can be determined at: lr7ortsYV13.1thi l
+' lug�r inous area is defined as the built neon area including, NO not limited to, buildings, roads, parking areas,
tiidetnalks, gravel areas, etc.
Report only that amount of existing BLIA that will remain after development. Do not report any existing BL1A that
is to be removed and which roil! be replaced bc/ nett, BLiA. •
11. How was the off -site impervious area listed above determined? Provide documentation. Impervious area is
not listed above none located from field survey & field observation.
Projects in Union County: Coniaet DIVA Central U111ce sig1ftu check i1'the project is located irithin a Threatened &
Endangered Species irartershed that maY be subject to more stringers stormirater requirements as per X`C.-IC 0211.0600.
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,.//h2o.enr.state.nc.us/su/bntsforms_htm.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from http://h2o.enr.state.nc.us/suf bmp_forms.htim. The complete application
package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating
project on the interactive online map at littp://h2o.enr.state.nc.us/su/msi_maps,htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST besigned and initialed in blue ink. Download the latest versions for
each submitted application package from ht1R.-h2o.ennstatemc.us/suz bill P forms.htni.
Initial
1. Original and one cope of the Storni%vater Management Permit Application Form. auz
2. Original and are copiy of the signed and notarized Deed Restrictions & Protective Covenants ►bt3
Form. (if required as tier Part V11 beloro) 111)
3. Original of the applicable Supplement Form(s) (sealed signed and dated) and O&M —agio—
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to V
littp://www.eiivhelp.org[pay for information on the Express program (7
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
Form SWU-101 Version ODul),2009 Page 4 of 7

5. A detailed narrative (one to two pages) describing the stormwater treatment/managementfor ►1✓ti
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the i S .
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/7.
mile radius on the map.
7. Sealed, signed and dated calculations. l iM
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
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.
1. 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.
n. 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 A-- WtA �°"r\
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"xll" 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 DWQ to verify the SHWT prior
to submittal, [phone].)
oS
�s
A copy of the most current property deed. Deed book: 539 Page No: 22
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 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.
ht!p://www.secretary.state.jic.us/Corporations/­CSearch.aspx
VIL . 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
httt)://h2o.enr.state.nc.us/su/bma forms.htm#deed restrictions. 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 DWQ, and that they will be recorded prior to the sale of any lot.
Form SWU-101 Version 07July2009 Page 5 of 7

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:
Consulting Firm:
Mailing Address:
City: _ State: Zip:
Phone: ( _ �} _ _ Fax: ( )
Email:
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item Ia) with (print or type name of organization listed in
Contact Information, item Ib) 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 DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ 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:
I, a Notary Public for the State of County of
do hereby certify that personally appeared
before me this _ day of I , and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-101 Version 073uly2009 Page 6 of 7

X. APPLICANT'S CERTIFICATION
I, (print or hjpe name of person listed in Contact Information, item 2)
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 rules under 1UCC .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211.
Signature: � Date:
P-i -, c a ` Dc--Lc6n a Notary Public for the State of C County of
20+^G(0 do hereby certify that 6 cnr G(Z. F Pnt_ )C 1 , personaIIy appeared
before me this day of D--Ce.r-n l-)-� aB Mo, and ack k'W'71
e eecution of the application for
a stormwater permit. Witness my hand and official seal,G
SEAL
My commission expires a - a 3 - 15
Form SWU-101 Version 07July2009 Page 7 of 7