SW3170402_CURRENT PERMIT_20170504

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. SW
DOC TYPE CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Energy, Mineral &
Land Resources
ENVIRONMENTAL OUALITY
May 4, 20P
Mrs. Susan Henn
Henn Automotive, LLC
1152 N. Broome St.
Waxhaw, NC 28173
Subject: Stormwater Permit No. SW3170462
Henn Storage Facility
Union County
Dear Mrs. Henn:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TRACY DAVIS
Director
CP
The Division of Energy, Mineral, and Land Resources (DEMLR), received a complete
Stormwater Management Permit Application for the subject project on May 4, 2017. Staff
review of the plans and specifications has determined that the project, as proposed, will
comply with the Stormwater Regulations set forth in 15A NCAC 02H .1000. We are
forwarding Permit No. SW3170402, dated May 4, 2017, for the construction, operation and
maintenance of the subject project and the stormwater system. This permit shall be
effective from the date of issuance until May 4, 2025, or until rescinded and shall be subject
to the conditions and limitations as specified therein, and does not supersede any other
agency permit that may be required.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing by filing a written petition with the Office
of Administrative Hearings (OAH). The written petition must conform to Chapter 150B of
the North Carolina General Statutes. Per NCGS 143-215(e) the petition must be filed with
the OAH within thirty (30) days of receipt of this permit. You should contact the OAH with
all questions regarding the filing fee (if a filing fee is required) and/or the details of the
filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or via telephone at
919-431-3000, or visit their website at www.NCOAH.com. Unless such demands are made
this permit shall be final and binding.
This project will be kept on file at the Mooresville Regional Office. If you have any
questions, or need additional information concerning this matter, please contact Robert
Patterson at [phone] or [e-mail].
Nothing Compares.._
SSiate of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
512 N. Salisbury Street 1 1612 Mail Service Center I Raleigh, North Carolina 27699-1612
919 707 9200

.�
Sincerely,
EMS •.S "RM
for Tracy E. Davis, PE, CPM, Director
cc: SW3170402 File - Mooresville Regional Office
ec: Marc Houle, PE - Yarbrough -Williams & Houle, Inc.
Nothing Compares
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
512 N. Salisbury Street 1 1612 Mall Service Center I Raleigh, North Carolina 27699-1612
9197079200

State Stormwater Permit
Permit No. SW3170402
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT QUALITY
STATE STORMWATER MANAGEMENT PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of NA
Carolina as amended, and other applicable Laws, Rules, and Regulations ,A
PERMISSION IS HEREBY GRANTED TO
o�`%
Henn Automotive, LLC ��p � cP
m oy, 2�
Henn Storage Facility N
o 0
Union County 'dog
FOR THE
construction, operation and maintenance of the Stormwater Control Measures (SCM) in
compliance with the provisions of 15A NCAC 02H .1000 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans, specifications and
other supporting data as on file with and approved by the State and considered a part of
this permit.
This permit shall be effective from the date of issuance until May 4, 2025, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. The SCM is approved for the management of stormwater runoff as described in the
application documents and as shown on the approved plans.
3. All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements. The final plats for the project will be
recorded showing all such required easements, in accordance with the approved
plans.
4. The runoff from all built -upon area within the permitted drainage area of this project
must be directed into the SCM.
5. The built -upon areas associated with this project shall be located at least 30 feet
landward of all perennial and intermittent surface waters.
It. SCHEDULE OF COMPLIANCE
1. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
Page 1 of 4

State Stormwater Permit
Permit No. SW3170402
2. The permittee shall at all time provide the operation and maintenance necessary to
assure every SCM functions at optimum efficiency. The signed and approved
Operation and Maintenance Agreement must be followed in its entirety.
Maintenance must occur at the scheduled intervals including, but not limited to:
a. Quarterly scheduled inspections (every 3 months).
b. Sediment removal.
C. StormFilter Cartridge maintenance.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans.
f. Debris removal and unclogging of all drainage structures, level spreader, filter
media, planting media, underdrains, catch basins and piping.
g. Access to the SCM and outlet structure must be available at all times.
3. ' Records of maintenance activities must be kept for the SCM. The reports will
indicate the date, activity, name of person performing the work and what actions
were taken.
4. The permittee shall submit an annual summary report of the maintenance and
inspection records for the SCM. The report shall summarize the inspection dates,
results of the inspections, and the maintenance work performed at each inspection.
5. The SCM shall be constructed in accordance with the approved plans and
specifications, the conditions of this permit, and with 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 SCM certifying that it 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. SCMs impacted by sedimentation and erosion control during the construction phase
shall be cleaned out and converted to its approved design state.
8. 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 sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
9. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of eight years from the date of the completion of
construction.
10. 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
Page 2 of 4

State Stormwater Permit
Permit No. SW3170402
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.
11. SCMs that allow stormwater to infiltrate shall not be located on or in areas with
contaminated soils.
12. Plats for residential lots that contain SCMs shall include: the specific location of the
SCM on the lot; a typical detail for SCM to be used; and a note that the SCM on the
property has been required to meet stormwater regulations and that the property
owner may be subject to enforcement procedures as set forth in G.S. 143, Article 21
if the SCM is removed, relocated, or altered without prior approval.
13. The O&M Agreement shall be referenced on the final plat and shall be recorded with
the county Register of Deeds upon final plat approval. If.no subdivision plat is
recorded for the site, then the O&M Agreement shall be recorded with the county
Register of Deeds so as to appear in the chain of title of all subsequent purchasers.
III. GENERAL CONDITIONS
1. 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 signed by both parties, to the State,
accompanied by the supporting documentation. 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 a request to transfer the permit.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the State, 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 DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
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.
Page 3 of 4

State Stormwater Permit
Permit No. SW3170402
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, rules and regulations contained in Title 15A NCAC 02H .1000
and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division in writing 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 4th day of May, 2017.
Director Division of Energy, Mineral, and Land Resources
Page 4 of 4

State Stormwater Permit
Permit No. SW3170402
Henn Automotive, LLC
Henn Storage Facility
Union 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,
(Project Name)
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.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
cc: NCDEQ-DEMLR Mooresville Regional Office
Page 1 of 1

DEMLR USE ONLY
at Received
Pee Paid
Permit Number
"I
i71
1 V-o zm--
W31 0At0
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 B-Ph II - Post Construction
(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 Energy, Mineral and Land Resources
STORMWATER MANAGEMENT PERMIT APPLICATION FORN* r
This form may be photocopied for use as an original
I. GENERAL INFORMATION C9 �1_ CP
r
1. Project Name (subdivision, facility, or establishment name -should be consistent with project nam�a°�gtlglns,
specifications, letters, operation and maintenance agreements, etc.):
Henn Storage Facilityy
2. Location of Project (street address):
1152 N. Broome Street
City: Waxhaw County: Union Zip:28173
3. Directions to project (from nearest major intersection):
0.75 miles North from the intersection of Hwy 16 and Hwy 75
4. Latitude: 34' 36' 03" N Longitude:80° 44' 53" 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 modifications 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: 2.96 ac of Disturbed Area
❑NPDES Industrial Stormwater 0404/401 Permit: Proposed Impacts 62.201f
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:
5. Is the project located within 5 miles of a public airport? NNo ❑Yes
If yes, see S.L. 2012-200, Part VI: httpJJportal.ncdenr.org/web/Ir/rules-and-regulations
FormSWU-101 Version Oct.31,2013 Page I of

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: Henn Automotive, LLC
Signing Official & Title: Susan Henn, Manager
b.Contact information for person listed in item la above:
Street Address: 1152 N. Broome Street
City: Waxhaw State: NC Zip: 28173
Mailing Address (if applicable):
State: Zip:
Phone: (704 ) 243-2540 Fax: ( )
Email: [e-mail] / [e-mail]
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):
Property Owner/Organization: Henn Automotive, LLC
Signing Official & Title: Susan Henn, Manager
b.Contact information for person listed in item 2a above:
Street Address: 1152 N. Broome St.
City: Waxhaw State: NC Zip: 28173
Mailing Address (if
Phone: (704 ) 243-2540 Fax: (
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization: Yarbrough -Williams & Houle. LLC
Signing Official & Title: Marc A. Houle, PE
b.Contact information for person listed in item 3a above:
Mailing Address: P.O. Box 1198
City: Pineville State: NC Zip:28134
Phone: (704 ) 556-1990 ext. 125 Fax: (704 ) 556-0505
Email:
4. Local jurisdiction for building permits: Town of Waxhaw
Point of Contact: Tim Tones Phone #: [phone]
Form SWU-101 Version Oct. 31, 2013 Page 2 of

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Ist inch of stormwater runoff will be treated in a Stormfilter system and detained in underground detention.
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 Catawba River basin.
4. Total Property Area: 1.948 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': 1.948 acres
Total project area shall be calculated to exclude the following the normal ppool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water
(MHW) line, and coastal wetlands landward front the NHW (or MHW) 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 = 74 %
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.
Basin Information
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
Receiving Stream Name
Blythe Creek
Stream Class *
C
Stream Index Number *
11-138-2-6
Total Drainage Area (so
39,540
On -site Drainage Area (so
39,540
Off -site Drainage Area (so
0.00
Proposed Impervious Area** (so
39,540
% Impervious Area** total
47
Impervious" Surface Area
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
40725
On -site Streets (so
On -site Parking (so
On -site Sidewalks (so
Other on -site (so
53770.93
Future (so
Off -site (so
Existing BUA*** (so
Total (sf):
1 94,495.93
* Stream Class and Index Number can be determined at: ht (portal.ncdenr.or veb/oq( s esu/classifications
** 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 B UA.
Form SWU-101 Version Oct. 31, 2013 . Page 3 of 6

11, How was the off -site impervious area listed above determined? Provide documentation. N/A
Projects in Union Countv: Contact DEMLR Central OJfice 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 l SA NCAC 0213.0600.
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 httQ//portal.ncdenr.org/w_eb/wq ws/su/bmp-manual.
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.ncdenr.or * webLw—q/ws/su/statesw/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 mapath�_//portal.ncdenr.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 http://pgrtal.ncdenr.org/web/wq/ws/su/statesw/forms_docs.
t I ilia s
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 Z4
Form. (if required as per Part VII 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. (For 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/managementfor
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
�—
receiving stream drains to class SA waters within'h 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:
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).
Form SWU-101 Version Oct. 31, 2013 Page 4 of

p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SI-IWT 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 Sails 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 verifij the SHIM prior
to submittal, [phone].)
A copy of the most current property deed. Deed book: 1084 Page No: 107
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 1a, 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.
ht!p://www.secretary.state.nc.tis/CorE!orations/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 http:11portal.ncdenr.or webL[state-stormwater-
forms does. 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.
Vlll. 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: Marc A Houle, PE
Consulting Firm: Yarbrough -Williams & Houle, Inc.
Mailing Address:730 Windsor Oak Ct
City: Charlotte State: NC Zip:28241
Phone: (704 ) 556-1990
Email: [e-mail]
Fax: (704 ) 556-0505
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
1, (print or hype name of person listed in Contact Information, item 2a) Susan Henn 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) Susan Henn with (print or type name of organization listed in
Contact Information, item la) Henn Automotive LLC 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.
Form SWU-101 Version Oct. 31, 2013 Page 5 of 6

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 143-275.6.
LLC byc5i6 2wn ��,,a,a. 51-21.90/7
I, J ass A tan Lug a Notary Public for the State of Nor4h 6,-J/: n5 County of
/ , SJS4n N-Gn., aS /•'1�n.t.s
V/t Z^ do hereby certify that H%.,. 4../ '-+ V- "C a /V .A personally appeared
before me this 2-day of Mom, 7_,,t7 , and ackn edge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
,all IIh1•
F .
VLOTA
a""'Cou '
SEAL
My commission expires
---LL0-)A 2 �1�
X. APPLICANT'S CERTIFICATION ��yC�u�.o%c Z-
I, (print or hype name of person listed in Contact Information, item la) �inf�iN ✓S�.t ���1 /1
certify that the information included on this permit application form is, to the bes 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 15A NCAC 2H .1000 and any other applicable state stormwater
requirements.
Signature: 4UAf-A9,-hA-,c- /er�<�Date: 5
IcGn IA' %
allotarygublicortheStateof , IV 4 rA /-' VCountyof
%
Fk+tiiv al /Itw -✓-
,4 %n do hereby certify that AtY0A w i.-._UX w M/�+�. �—personally appeared
before me this Z day of /k!!7 Zot -7, and ack dge the due execution of the application for
a stormwater permit. Witness my hand and official seal, z-
,�p...napp.
ALLEN����•.
�QTAf�,
G
•••.,,y C000��.•`�
SEAL
My commission expires/Z 2/
Form SWU-101 Version Oct. 31, 2013 Page 6 of 6

Permit Number. 5W3f 0Ltwz-
(ro be provided by DWQ)
StormFilter 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, arfO
the removal efficiency of the BMP.
Important maintenance procedures: ? o
- The drainage area will be carefully managed to reduce the sediment load to the §� p
StormFilter. rn'%• b�
- The sedimentation chamber or forebay will be cleaned out whenever sediment d 0 eed
six inches. -
The StormFilter system will be inspected quarterly. Records of operation and maintenance ,411 be kept
in a known set location and will 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 the problem: '
Entire BMP
Trash debris is present.
Remove the trash debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as
applicable)
pavement surface.
possible.
Flow diversion structure
The structure is clogged.
Unclog the conveyance and dispose of any
sediment offsite.
The structure is damaged.
Make any necessary repairs or replace if
damage is too large for repair.
StormFilter Cartridges
Cartridges not performing as
Replace cartridges per manufacturer's
designed - see Contech I&M
recommendations.
document to determine if cartridge
maintenance is required.
Outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of
the sediment offsite.
The outlet device is damaged
Repair or replace the outlet device.
Receiving water
Erosion or other signs of damage
Contact the NC Division of Water
have occurred at the outlet.
Quality 401 Oversight Unit at 919-733-
1786.

Permit Number: SW 317d`{ 02
(to be provided by DWQ)
All other operation and maintenance activities should be in accordance with Contech's StormFilter
Inspection and Maintenance Procedures document. Any problems that are found shall be repaired
immediately. I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above and have received and understand Contech's
StormFilter Inspection and Maintenance Procedures document. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: Henn Storage Facility
UMP drainage area number: 1
Print name: ei "n µGnn A'th4SM.i-i< fit-� LL (f—
Address: 1 152 N. Broome Street Waxhaw. NC 28173
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.
1, J-jiri.v 4/C., Z-e - , a Notary Public for the State of [ Vdeili �a-✓� ^ �.,
S��
County of Il/tlty.N —,do hereby certify that n ofN+- _L6G e✓ /V.v� G✓l• .�
personally appeared before me this day off and acknowledge the due
execution of the forgoing sand filter maintenance. requirements.
NOTARt.
pV81.1G
v'
- -, W
SEAL %
My commission expires 3 f z y/ 20 / r
Witness my hand and official seal,
PIL��

J - �
� �1,;
f i
. ":1 ' .�f'��l .R �
I �..f. .. ��. �1
� �' �
\' .

Permit Number: 5W? 1 7040A
(to be provided by DWQ)
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
�W�
A 401 CERTIFICATION APPLICATION FORM of w''A��TF,q
`—
C NTECH•STORMFILTER SUPPLEMENT '�\
NCDENR
ENGINEERED SOLUTIONS ob"<
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section 111) and the 0&M Agreement
I. PROJECT INFORMATION
z - '",• :_-
Project name
Henn Storage Facility
Contact name
Vincent G. Keene, PE
Phone number
704-556-1990
Date
March 28, 2017
Drainage area number
1
11.,DESIGN INFORMATION
3
Site Characteristics
Drainage area (AD)
39,540.00 ft2 OK
Impervious area
39,540.00 ft2
% Impervious (IA)
100.0% %
Design rainfall depth (RD)
1.00 in
�•� ffJi: ryr
Peak Flow Calculations
'
• ••
1 -yr, 24-hr runoff depth
�n,•'
2.58 in e`
1-yr, 24-hrintensity
1.10 in/hr I%
Pre -development 1-yr, 24-hr runoff
0.14 ft�/sec $ A�
Post -development 1-yr, 24-hr runoff
0.10 ft'/sec 149)6
Pre/Post 1-yr, 24-hr peak control
_
-0.04 ft/see `
Storage volume
•'•.
Design volume (WOV)
Adjusted water quality volume (WOVAdi)
3,130.25 ft' 9�V%y�p� (��v`',
2,347.69ft' OK `''•rnunu�" J/0�7
Volume contained before filter
7,509.00 ft3
Runoff Coefficient (Rv)
0.95 (unifless)
Mass loading calculations
Mean Annual Rainfall, P
45.00 in
Agency required TSS% removal
85.00%
Percent Runoff Capture (% capture)
90.00%
Event Mean Concentration of Pollutant, EMC 70.00 m /l (Suggestion: Use e0 for residential, 70 for Commercial, 100
9
for Industrial)
Filter System
Cartridge height
27.00 in
Specific Flow Rate, q
7.50 gpm/ft'
SHWT elevation
580.00 ft amsl
Bottom of the StormFilter vault elevation
597.50 ft amsl
Clearance (dSH vr)
17.50
Time to drain the StormFilter (t)
hours
Time to drain the StormFilter (t)
days
SUMMARY
Maximum Treatment Flow Rate, cfs
Number of Cartridges
Additional Information
Does volume in excess of the design volume bypass the filter?
Is an off-line flow -splitting device used?
If draining to SA waters: Does volume in excess of the design volume flow
evenly distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
1.25
10.00
Y
Y or N
OK
Y
Y or N
OK
YorN
It
YorN
Y
YorN
OK
Y
Y or N
OK
Y YorN OK
Form SW401-Storm Filter-Rev.1 2012Aug Parts I and II. Project Design Summary, Page 1 of 1

11 qM
YARBROUGH -WILLIAMS & HOULE, INC.
Planning • Surveying • Engineering
NCBELS C-0475
SC COA332
March 30, 2017
PROJECT STORMWATER NARRATIVE, o < duo
vG
Q� o� 11;01
CP..
Re: HENN STORAGE FACILITY
Storm water runoff from the Henn Storage Facility Project will be treated by a Stormfilter structure
designed to treat the 1 inch storm volume. The treated area is the difference in impervious area
between the existing impervious area (54,960.06 sf) and the proposed impervious area (94,495.93 sf). The impervious area difference of 39,535.87 sf or, 0.91 acres.
The 1, 2, and 10 year storms will be detained to, pre -development runoff peak flows generated by the
impervious area difference of 0.91 acres., Detention is provided by utilizing underground 9V detention
system:
An existing 60" CMP will be extended so that offsite flow will bypass the on -site drainage system. "One
other offsite drainage system will be connected with a 24" HDPE pipe to provide for by-pass through the "
site.
No drainage flow will be diverted from existing drainage patterns.
730 Windsor Oak Court; Charlotte, NC 28273 •'P.O. B6x•1198, Pineville, NC 28134 • 704.556.1990 • fax [phone]