SW4210302_Response To Comments_20210621

CDCcivil�"
Design
Concepts. PA `.
Transmittal
Date: June 17, 2021
Project Name: Appalachian State University Poplar Grove Child Development Center
Expansion
CDC Project: 21965
NCDEQ Project: SW4210302
To: Division of Energy, Mineral and Land Resources
Stormwater Program
1612 Mail Service Center
512 North Salisbury Street
Raleigh, NC 27699-1612
Via: ❑ Mail ® Overnight ❑ Hand Delivered ❑ Pick up @ CDC Office ® Digital
Date
--------------------
6/ 17/2021
--------------------
10/9/20
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6/17/21
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6/2021
--------------------
6/8/2021
--------------------
--------------------
2/26/2021
--------------------
Remarks:
Description
---------------------------------------------------------------------------------------------
Cover Letter
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Stormwater Management Plan Application Form (Revised Section IV.10)
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Supplemental EZ Form
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Pre- and Post -Development Drainage Bulletins
---------------------------------------------------------------------------------------------
Operation & Maintenance Agreement
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Detention Outlet Calculation
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Engineering Plans
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NMicel ein, P.
Mailing Address: P.O. Box 5432, Asheville, NC 28813
168 Patton Avenue Asheville, NC 28801 52 Walnut Street — Suite 9, Waynesville, NC 28786
Phone [phone] Fax [phone] Phone: [phone] Fax: [phone]

C_AD8�C
Civil
Design
Concepts, PA
June 17, 2021
Mr. Steven Corey Anen, PE
NCDEQ — Division of Energy, Mineral and Land Resources
Stormwater Program
1612 Mail Service Center
512 North Salisbury Street
Raleigh, NC 27699-1612
Re: ASU Poplar Grove Child Development Center Expansion
Stormwater Permit No. SW4210302
CDC Project No.: 21965
Dear Mr. Anen,
On behalf of Appalachian State University (ASU), CDC is pleased to submit the requested
information for your review and approval. The comments identified in the letter from your
office dated May 19, 2021, are summarized below with the project's responses (in blue).
1. Please delineate all wetlands and streams on site or add a note that none exist. CDC — See
C101. Streams and wetland have been added to each development sheet.
2. Please complete the table on Page 3 of the SWU-101 application with the BUA broken down
by type rather than labeling the total as Other. CDC — The table has been modified and has
been inserted into the SWU-101 document. The complete SWU-101 is attached.
3. Only the third sheet of the Supplement EZ form was submitted. Please submit a complete
signed and sealed Supplement EZ form. CDC -The complete form is attached.
4. Please submit full size sheets that show the pre -development and post -development drainage
areas with all existing and proposed BUA clearly labeled. CDC — The pre- and post -
development drainage bulletins are attached.
5. Please submit a new O&M form using the most up-to-date version of the O&M EZ
spreadsheet. The spreadsheet can be found on the Stormwater Design Manual website. CDC
— The new form has been signed and is attached.
Mailing Address: P.O. Box 5432, Asheville, NC 28813
168 Patton Avenue, Asheville, NC 28801 52 Walnut Street — Suite 9, Waynesville, NC 28786
Phone [phone] Fax [phone] Phone: [phone] Fax: [phone]

6. Please submit calculations to show that the Bayfilter is designed to treat the runoff from the
design storm. CDC — The calculated flow rate from the 1-inch rainfall entering the Bayfilter
system is 0.43 cfs. See Supplemental EZ Form. Per Detail D5.10 on Sheet C953, the
treatment flow rate is 0.18 cfs/cartridge. The chamber will have 4 cartridges, providing a
treatment capacity of 0.72 cfs.
7. Please submit calculations to show that all outlets are designed to prevent erosion during the
peak flow from the 10-year storm. CDC — The peak flow rate from the detention system for
the 10-years storm event is 10.38 cfs. The 25-year discharge is 14.33 cfs. The rip -rap apron
was designed and shown to the 25-year flow rate and the calculation is attached.
8. Provide pdfs of all revisions, 2 hardcopies of revised plan sheets, and 1 hardcopy of other
documents. Pdfs must be uploaded using the form at:
https:Hedocs.deq.nc.gov/Forms/SW_Project Submittal. CDC — Plans and supporting
documents were uploaded on June 17, 2021. Paper copies will follow by mail.
If you should have any questions or comments regarding this submittal, please do not hesitate to
contact our office. We appreciate your assistance with this project.
Sincerely,
Michael Cain, E.
Civil Design Concepts, P.A.
[e-mail]
Mailing Address: P.O. Box 5432, Asheville, NC 28813
168 Patton Avenue, Asheville, NC 28801 52 Walnut Street — Suite 9, Waynesville, NC 28786
Phone [phone] Fax [phone] Phone: [phone] Fax: [phone]

DEMLR USE ONLY
Date Received Fee Paid Permit Number
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Nan -Coastal SW- HQW/ORW Waters ❑ UniversaI Stormwater Management Plan,
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Energy, Mineral and Land Resources
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.):
ASU Poplar Grove Child Development Center Exvansion
2. Location of Project (street address):
538 Poplar Grove Road
City -Boone County:NC Zip:28607
3. Directions to project (from nearest major intersection):
From Highway 321 roceed south on Old Bristol Road for 300 feet; turn ri t on Poplar Grove Road;
r 'ect is 1000 feet ahead on left side of road
4. Latitude:36* 13' 1.68" N Longitude:-810 41' 30.56" W of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): NNew ❑Modification ❑ Renewal w/ Modificationt
tReneruals with modifications also requires SKU 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* ElCompleted* '"provide a designer's certification
2. Specify the type of project (check one):
❑Low Density NHigh 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,
proposed, -
and the previous name of the project, if different than currently
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: ac of Disturbed Area
❑NPDES Industrial Stormwater Z404/401 Permit: Proposed Impacts 0.052 Ac Wetlandi 149 LF Stream
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? HNo ❑Yes
If yes, see S.L. 2012-200, Part W. hU:Uportal.ncdeni.org/web/Ir/rules-and-regglations
Form SWU-101 Version Oct. 31, 2013 Page 1 of 6

III. CONTACT INFORMATION
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:The Board of Trustees f the Endowment Fund of Appalachian State University
Signing Official & Titie:Dr. Sheri Everts Chancellor and Paul Forte VC of Business Affairs
b. Contact information for person listed in item 1a above:
Street Address.438 Academy Street BB Dougherty Administration Building _
City:Boone State:NC Zip:28608
Mailing Address (if applicable):PO Box 21126
City:Boone State:NC Zip:28608
Phone: L828 )_ 262-2040 and 828-262-2030 Fax:
Email:evertsgn@a
�gpstate.edu and [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:
Signing Official & Title:
b. Contact information for person listed in item 2a above:
Street Address:
City: State: Zip:
Mailing Address (if applicable):
City: State: Zip:
Phone: Fax: ( } -
Email:
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: David lonesLASU Planning Design and Construction
Signing Official & Title:Project Manager
b. Contact information for person listed in item 3a above:
Mailing Address:2458 1Pffiw!1y 105 South
City:Boone State:NC Zip:28607
Phone: (828 L262-7531 Fax-
Emajl:jonesdr2@ai)-Dstate.edu
)
Email:[e-mail]
4. Local jurisdiction for building permits: Town of Boone
Point of Contact:Marlene Crosb Phone #: [phone]
Form SVX-101 Version Oct. 31, 2013 Page 2 of 6

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater quantity will be detained to comply with NCDEQ and Town of Boone requirements.
Stormwater quality will be provided by a Bayfilter Filtration System for the 1-inch rainfall.
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 (05050001) River basin.
4. Total Property Area: 3.9 acres
5. Total Coastal Wetlands Area: NA acres
6. Total Surface Water Area: 0.117 (wetlands acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area':3.783 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 (NHM line or Mean High Water
(MHM line, and coastal wetlands landward from the NHW (or MH1O line. The resultant project area is used to
calculate overall percent built upon area (B UA). Non -coastal wetlands landward of the NHW (or MHVv) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 27.5
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
Boone Creek
Stream Class *
C; Tr:+
Stream Index Number
10-14-4
Total Drainage Area (sf)
169884
On -site Drainage Area (sf)
169884
Off -site Drainage Area (sf)
None
Proposed Impervious Area** (sf)
8146
Impervious Area** (total)
27.5
Impervious- Surface Area
Drainage Area 1
Drainage Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (sf)
11538
On -site Streets (sf)
24389
On -site Parking (sf)
2596
On -site Sidewalks (sf)
8195
Other on -site (sf)
46718 (total)
Future (sf)
None
Off -site (sf)
None
Existing BUA*** (sf)
38572
Total (sf):
169884
* Stream Class and Index Number can be determined at: http2.Z&ortal.ncdenr.or /wg eb/wq&s/csu/classifications
Im ervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version Oct. 31, 2013 Page 3 of 6

'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. No off site area
contributes to the stormwater management s3Mtems
Proiects in Union County: Contact DEMLR Central ice staf"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 httortal.ncdenr.or web Lvws su bm -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
hU://12ortaI.ncdenr.o.rg/web/w-q/ws/su/statesw/fornis docs. 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 athU://portal.ncdenr.org/web/wq/ws/su/mal2s.)
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 hM://12ortal.ncdenr.org/web/w2/`ws/su/stateswZforms docs.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. ryVr—
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants r►*tr
Form. (if required as per Part VII below)
3. OriginaI of the applicable Supplement Form(s) (sealed, signed and dated) and O&M iycr—
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to rrilzt
hU://www.envhelp.org/ages/onestoueUress.hbnl 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 for MZCC-
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the r- I
receiving stream drains to class SA waters within Vi mile of the site boundary, include the 1h
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: YC=
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.
E. Details of roads, drainage features, collection systems, and stormwater control measures.
in. 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 6

p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevationsin 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 BNWs, 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 SHVVT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: z1 5p Page No:d'C--
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.
h2R://www.secretaiy.state.nc.us/coiRorations/CSearch.asi2x
VII. DEED RESTRICTIONS AND PROTECr1VE 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 ht ortal.ncdenr.or web r state-
storxnwater-forms docs. 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 ran 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:Michael Cain
Consulting Firm: Civil Desio Conce is
Mailing Address:168 Patton Avenue
City:Asheville
Phone: [phone]
Email:[e-mail]
State -NC Zip:28801
Fax: ( }
DC. 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 1 a) 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.
Fonn 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 143-215.6.
Signature:
a Notary Public for the State of
do hereby certify that
Date:
County of
personally appeared
before me this _ day of and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
X. APPLICANT'S CERTIFICATION
1, (print or type name ofperson listed in Contact Information, item 1a) Dr. Sheri Everts and Paul Forte
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 5A� NCAC 2H .1000 and any other applicable state stormwater ��eer�e ements.
Signature: x ?' -_� Date: ID q
IQN
+ v
I, Ltd Aron a Notary Public for the State of County of
do hereby certify that v +E f ;r Q_ personally appeared
before me this g day of , and acknowledge the due execution of the ap lication for
a stormwater permit. Witness my hand and official seal '-
SEAL
My commission expires
Form SWU-101 Version Oct. 31, 2013 Page 6 of 6

SUPPLEMENT-EZ COVER PAGE
FORMS LOADED
:OJECT INFORMATI N
1 Project Name
2 Project Area ac
3 Coastal Wetland Area
ASU Poplar Grove Child Development Center
3.9
4 1 Surface Water Area ac 0.117 wetlands
5 Is this project High or Low Density? High
6 Does this project use an off -site SCM? No
COMPL E WITH 02H .1003(4)
7
Width of vegetated setbacks provided (feet)
30
8
Will the vegetated setback remain vegetated?
Yes
9
Is BUA other that as listed in .1003 4 c-d out of the setback?
Yes
10
Is streambank stabilization proposed on this project?
No
BER AND TYPE
11
Infiltration System
0
12
Bioretention Cell
0
13
Wet Pond
0
14
Stormwater Wetland
0
15
Permeable Pavement
0
16
Sand Filter
0
17
Rainwater Harvesting RWH
0
18
Green Roof
0
19
Level Spreader -Filter Strip LS-FS
0
20
Disconnected Impervious Surface (DIS)
0
21
Treatment Swale
0
22
Dry Pond
0
23
StormFilter
0
24
Silva Cell
0
25
Ba filter
1
26
Filterra
0
FORMS LOADED
SIGNER CERTIFICATION
27
Name and Title:
Michael Cain, PE
28
Organization:
Civil Design Concepts
29
Street address:
168 Patton Avenue
30
City, State, Zip:
Asheville, NC 28801
31
Phone numbers :
828-252-5388
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 belief, true, accurate, and complete, and
that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent
with the information provided here.
O� 0 E AOOl2
=o°QO �9°
SEAL 1.=
047788
o
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tiq EMI J\\G
Signatur of Design
Date

DRAINAGE AREAS
1
Is this a high density project?
Yes
2
If so, number of drainage areas/SCMs
1
3
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
DRAINAGE AREA INFORMATION
ite
1
4
Type of SCM
r
5
Total BUA in project (sq ft)
r467718f
6
New BUA on subdivided lots (subject to permitting)
(sq ft
7
New BUA outside of subdivided lots (subject to
permitting) (so
8146 sf
8
Offsite - total area (sq ft)
sf
9
Offsite BUA (sq ft
sf
10
Breakdown of new BUA outside subdivided lots:
Parkin (sq ft
1620 sf
Sidewalk (sq ft
242 sf
Roof (sq ft
5324 sf
Roadway s ft
960 sf
Future (sq ft
Other, please specify in the comment box
below (sq ft
8146 sf
11
New infiltrating permeable pavement on
subdivided lots (sq ft
sf
12
New infiltrating permeable pavement outside of
Isubdivided lots (sq ft
sf
13permitting)
Exisitng BUA that will remain (not subject to
s ft
38572 sf
14
Existing BUA that is already permitted (sq ft
38572 sf
15
Existing BUA that will be removed (sq ft
sf
16
Percent BUA
28%
17
Design storm inches
1 in
18
Design volume of SCM cu ft
NA
19
1 Calculation method for design volume
NA
ADDITIONAL INFORMATION
20
Please use this space to provide any additional information about the
drainage area(s):
One drainage area consisting of the impervious portion of the developed site
will drain to a Bayfilter system
DRAINAGE AREA INFORMATION
Entire Site
1
4
Type of SCM
NA
5
Total BUA from project (sq ft)
6
1995 rules
SL 2006-246
2008 rules
2017 rules
7
New BUA on subdivided lots (subject to
permitting) (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
8
New BUA outside of subdivided lots (subject to
permitting) (sf)
1995 rules
SL 2006-246
2008 rules
2017 rules
9
Offsite - total area (sq ft)
1995 rules
SL 2006-246
2008 rules
2017 rules
10
Offsite BUA (sq ft)
1995 rules
SL 2006-246

2008 rules
2017 rules
11
Design storm (inches)
1995 rules
SL 2006-246
2008 rules
2017 rules
12
Breakdown of new BUA:
Parking (sq ft
Sidewalk (sq ft)
Roof (sq ft
Roadway (sq ft)
Future (sq ft)
Other, please specify in the comment box
below (sq ft
13
New infiltrating permeable pavement on
Isubdivided lots (sq ft
14
New infiltrating permeable pavement outside of
subdivided lots (sq ft
15
Exisitng BUA that will remain (not subject to
permitting) (sq ft)
16
Existing BUA that is already permitted (sq ft
17
Existing BUA that will be removed (sq ft)
18
Percent BUA
19
Design volume of SCM (cu ft)
20
Calculation method for design volume
ADDITIOWAL INFORKMtION
21
Please use this space to provide any additional
information about the drainage area(s):

BAYFILTER
1
Drainage area number
1
2
1 Design volume (cu ft) or peak treatment rate (cfs) of SCM
0.43 cfs
GENERAL
MDC FROM 02H .1050
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)?
NA
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
Is there an overflow or bypass for inflow volume in excess of
the design volume? Yes
What is the method for dewatering the SCM for maintenance? Other
8
9
10
If applicable, will the SCM be cleaned out after construction?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
Does the drainage easement comply with General MDC (9)?
Yes
13
If the SCM is on a single family lot, does (will?) the plat
comply with General MDC (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
Yes
16
Does the SCM follow the device specific MDC?
17
Was the SCM designed by an NC licensed professional? Yes
BAYFILTER MDC FROM THE STORMWATER DESIGN MANUAL
18
If Volume Design is used, what is the volume from the
drainage area (cubic feet)?
NA
19
Is an upstream detention used?
No
20
Volume of the upslope detenion system (cubic feet)
NA
21
Percent of the design volume contained in the upslope
detention system (%)
NA
22
If Rate Based Sizing is used, for 1 inch or 1.5 inch (Coastal
areas). Water Quality flow rate for drainage area (cfs)
0.43 cfs
23
Number of cartridges
4
24
Cartridge height (inches)
36 in
25
SHWT elevation (fmsl)
NA
26
Elevation of bottom of BayFilter vault (fmsl)
3308.65
27
Clearance from the SHWT (feet)
NA
28
BayFilter Media Flow Rate (GPM/ft2 of Media Surface)
gpm/sf
29
Does the system includes a sediment sump?
No
30
If yes, the diameter of the sump (feet)
NA
31
If yes, the depth of the sump (feet)
NA
32
Time to drain the sump (hours)
NA
33
Time to drain the BayFilter (hours)
NA
34
Is an off-line flow splitting device used?
No
35
Type of media used (EMC or GAC-metals)
EMC
36
Will maintenance be performed by Certified Maintenance
providers per instructions?
Yes
ADDITIONAL INFORMATION
37
Please use this space to provide any additional information
about the BayFilter system(s):

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Operation & Maintenance Agreement
Project Name: ASU Poplar Grove Child Development Center
Project Location: Boone, NC
Cover Page
Maintenance records shall be kept on the following SCM(s). This maintenance record shall be kept in a log in a known set location.
Any deficient SCM elements noted in the inspection will be corrected, repaired, or replaced immediately. These deficiencies can
affect the integrity of structures, safety of the public, and the pollutant removal efficiency of the SCM(s).
The SCM(s) on this project include (check all that apply & co
Infiltration Basin
Quantity:
Infiltration Trench
Quantity:
Bioretention Cell
Quantity:
Wet Pond
Quantity:
Stormwater Wetland
Quantity:
Permeable Pavement
Quantity:
Sand Filter
Quantity:
Rainwater Harvesting
Quantity:
Green Roof
Quantity:
Level Spreader - Filter Strip
Quantity:
Proprietary System
Quantity:
Treatment Swale
Quantity:
Dry Pond
Quantity:
Disconnected Impervious Surface
Present:
User Defined SCM
Present:
Low Density
Present:
ing O&M sheets will
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Location(s):
Type:
6Za
I acknowledge and agree by my signature below that I am responsible for the performance of the maintenance procedures listed for
each SCM above, and attached O&M tables. I agree to notify NCDEQ of any problems with the system or prior to any changes to
the system or responsible party.
Responsible Party:
Title & Organization:
Street address:
City, state, zip:
Phone number(s):
Email:
Board of Trustees of the Endowment Fund of Appalachian State Uni
Dr. Sheri Everts (Chancellor) & Paul Forte (VC Business Affairs)
438 Academy Street, BB Dougherty Administration Building
Boone, NC 28608
828-262-2040 & 828-262-2030
[e-mail] & [e-mail]
appstate.edu
She6 goe/fs
Signature: eel
'4 T� "%/>�ate:
a Notary Public for the State of —h
County of l/i�crA.t� do hereby certify that �1-�
.� 1
personally appeared before me this day of and
s
of the Operations and Maintenance
seal,—�
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Seal My commission expires , ao , '�Lq
STORM-EZ
Version 1.5 O&M Agreement
5/28/2021
Page 1 of 1

0
T
Outlet
pipe 4fo�]
= Do + 0.4La
diameter (Do) � La
Tail water 0.5Do
APRON DEPTH IS 1.5 TIMES THE STONE
DIAMETER (18" MINIMUM DEPTH) 90
20
10 FT
(MIN. LENGTH)
—> 10
0
80
O -
QQ� 70
-4
1
60
3 5 10 20 50 100 200 500
Discharge (ft 3/sec)
Curves may not be extrapolated.
Figure 8.06b Design of outlet protection from a round pipe flowing full, maximum tailwater condition (TW >_ 0.5 diameter).
STRUCTURE: DETENTION OUTLET LENGTH: loft
DISCHARGE: 14.33 cfs WIDTH: 6 ft
PIPE DIA. (D) 24 in d50: 0.5 ft
DEPTH: 1.5 ft
3
2
a�
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a
Cz
i
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1 �
LO
O
0
0.50 FT
(MIN. d50)
.�0
1000
8.06.4 Rev. 12/93