HomeMy WebLinkAboutSW7071213_CURRENT PERMIT_20071228STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT. NO.
SW !1LL0
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Francis Elbers
Artisan Marble and Tile, Inc.
206 Villa Dunes Drive
Nags Head, NC 27959
Permit No. SW7071213
Artisan Marble and Tile
High Density Stormwater Project
Dare County
Dear Mr. Elbers:
Coleen H. Sullins, Director
Division of Water Quality
The Washington Regional Office received a completed Stormwater Application for the subject project on
December 19, 2007. 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. We are forwarding Permit No.
SW7071213 dated December 28, 2007 tolArtisan Marble and Tile, Inc. for the construction and operation of an
infiltration basin and an infiltration trench to serve the Artisan Marble and Tile development located southwest of the
intersection of W. Satterfield Landing Road and Lark Avenue in Nags Head, North Carolina.
This permit shall be effective from the date of issuance until December 28, 2017, and shall be subject to the
conditions and limitations as specified ther'ein. Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
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, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such
demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact me or Samir
Dumpor at (252) 946-6481. 1
s, Regional Supervisor
Water Protection Section
Iton Regional Office
AH/sd J:\WPDATA\WQS\Samir - State
cc: David Deel, PE, Quible & Associates! P.C.
David Moye, DCM
Dare County Building Inspections Departrr
,4 ashington Regional Office
Central Files
its - Infiltration
North Carolina Division of Water Quality Internet «�vw.ncwatermialio or,, One 943 Washington Square Mall Phone (252) 946-6481 NorthCarolina
lna
Washington, NC 27889 Fax (252) 946-9215 a "allb"
An Equal Opportunity/Affirmative Action Employer50°/Recycled, i0% Post Consumer Paper �/L [s
4
ST
DEPARTMENT
In accordance with the provisions of Artic
other applicable Laws, Rules, and Regula
StateStonnwater Management Systems
Permit No. SW7071213
ATE OF NORTH CAROLINA
OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
H DENSITY DEVELOPMENT
21 of Chapter 143, General Statutes of North Carolina as amended, and
ms
IISSION IS HEREBY GRANTED TO
Artisan Marble and Tile, Inc.
Artisan Marble and Tile
Dare County
FOR THE
construction, operation and maintenance of stormwater management systems in compliance with. the provisions of
15A NCAC 2H.1000 (hereafter referred to as the "stormwater rules') 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 for an infiltration basin and an infiltration trench to serve the Artisan
Marble and Tile development located southwest of the intersection of W. Satterfield Landing Road and Lark Avenue
in Nags Head, North Carolina.
This permit shall be effective from the date' issuance until December 28, 2017 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. 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 40,139 square feet of
impervious area. I
3. The tract will be limited to the amount of�built-upon area indicated in this permit, and per approved plans
4. The runoff from all built -upon area witfiin the permitted drainage area of this project must be directed into the
permitted stormwater control system.
5. The following design criteria have been provided in the infiltration basins and must be maintained at.design
condition: I
DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Artisan Marble and Tile
Permit Number:
SW7071213
Location:
Dare County
Applicant:
Artisan Marble and Tile, Inc.
Mailing Address:
206 Villa Dunes Drive, Nags Head, NC 27959
Receiving Stream and index No.:
Atlantic Ocean, 99-(7)
Classification of Water Body:
SB
Total Site Area:
2.88 ac
Design Storm, inches:
1.0
INFILTRATION BASIN INFILTRATION BASIN
Drainage area to Basin:
1.44 ac (total for both basins)
Impervious area in drainage basin:
40,139 sf (Total for whole site, counting the credit given for permeable
pavement. Credit of 40% applied to 13,109 sf of turf stone)
Infiltration Basin Depth:
2.30 ft 1.63 ft
Basin bottom elevation, FMSL:
9.0 9.0
Bypass Overflow Elevation, FMSL:
11.80 10.63
Type of Soil:
Ousley fine sand and Newhan fine sand
Provided Storage Volume:
8,043 cf 4,349 cf
Time to Draw Down:
0.83 days 0.83 days .
Expected Infiltration Rate, in/hr:
2.0 2.0
I
1
Artisan Marble and Tile, Inc. — Artisan Marble and Tile
Stormwater Permit No. SW7071213
Designer's Certification
I, , as a duly
registered Professional Engineer in the State of North Carolina, having been authorized to observe
(periodically/weekly/full time)
the construction of the 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.
Signature
Registration Number
Date
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 the 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/bypass 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 3:1.
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. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
, P-
,EC 19 200
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
pp -,STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Francis Ethers PtcS1de.N '
3. Mailing Address for person listed in item 2 above:
206 Villa Dunes Drive
City:Nags Head State:NC Zip:27959
Phone: (252 ) 207-2511 Fax: (252 1 441-1989
Ema il: f ancis@artisanmarbleandtile.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Artisan Marble and Tile
5. Location of Project (street address):
2230 W. Lark Avenue
City:Nags I -lead County:Dare
6. Directions to project (from nearest major intersection):
Protect is located immediately southwest of the intersection of W Satterfield Landing Road and Lark Avenue
7. Latitude:35.98795556 N Longitude:75.65066944 W of project
8. Contact person who can answer questions about the project:
Name:David A. Deel, P.E. Telephone Number: (252 ) 261-3300
Eiiiail:dadeel@quible.com
11. PERMIT INFORMATION:
1. Specify whether project is (check one): ®New Renewal Modification
Form SWU-101 Version 8.07 Page I of
I
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
❑Low Density ®High Density []Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks):
®CAMA Major ❑Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
Ill. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
2. Stormwater runoff from this project drains to the Pasquotank River basin.
3. Total Site Area: 2.0 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: N/A acres (not applicable if no Wetlands exist on site)
6. Total Project Area**:2.0 acres 7. Project Built Upon Area:47.1
8. I -low many drainage areas does the project have?]
9. Complete the following information for each drainage area. If there are more than two 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 2
Receiving Stream Name
Atlantic Ocean
Stream Class & Index No.
-PC— SB
Drainage Area (so
62,539 sf
Existing Impervious* Area (so
N/A
Proposed Impervious*Area (sf)
1 40,139 sf
% Impervious* Area (total)
64.2%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
23,560 sf
On -site Streets (so
N/A
On -site Parking (so
16,081 sf
On -site Sidewalks (so
290 sf
Other on -site (so
208 sf
Off -site (sf)
Total (so:
40,139 sf
ants)
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion Of Wetlands in the built upon area
percentage calculation.
Form SWU-101 Version 8.07 Page 2 of
1C. How was the off -site impervious area listed above derived?AutoCAD Area Routine
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, size and the allowable built -upon area for each lot must be provided as an attachment.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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 State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for the status
and availability of these forms.
Form SW401-Low Density
Low Density Supplement
Form SW401-Curb Outlet System
Curb Outlet System Supplement
Form SW401-Off-Site System
Off -Site System Supplement
Form SW401-Wet Detention Basin
Wet Detention Basin Supplement
Form SW401-Infiltration Basin
Infiltration Basin Supplement
Form SW401-Infiltration Trench
Underground Infiltration Trench Supplement
Form SW401-Bioretention Cell
Bioretention Cell Supplement
Form SW401-Level Spreader
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Form SW401-Wetland
Constructed Wetland Supplement
Form SW401-Grassed Swale
Grassed Swale Supplement
Form SW401-Sand Filter
Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of
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. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at littp://li2o.erir.state.iic.us/su/msi maps htnr)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stonnwater Management Permit Application Form
• Original and ome copy of the Deed Restrictions & Protective Covenants Form
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soil report
• Three copies of plans and specifications (sealed, signed & dated), including:
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/ project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm):Quible & Associates, P.C.
Mailing Address:P.O. Drawer 870
City:Kitty Hawk State:NC Zip:27949
Phone: (252 ) 261-3300
Email:dadeel@quible.com
Vlll. APPLICANT'S CERTIFICATION
Fax: (252 ) 261-1260
1, (print or type name of person listed in General Information, item 2) Francis Elbers
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 15A
NCAC 2H .1000. /1-7)
Date:
Form SWU-101 Version 8.07 Page 4 of
Permit Number:
��(to be proWded by DFVQ)
i�'+r( Drainage Area Number:
Infiltration Basin Inspection and Maintenance Agreement
DEC 19 2007
r ; f 1rlrwilb 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.
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to the
infiltration basin.
— Immediately after the infiltration basin is established, the vegetation will be
watered twice weekly if needed until the plants become established (commonly
six weeks).
— No portion of the infiltration basin will be fertilized after the initial fertilization
that is required to establish the vegetation.
— The vegetation in and around the basin will be maintained at a height of
approximately six inches.
After the infiltration basin is established, it will be inspected once a quarter and within
24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of inspection and maintenance will 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 theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
infiltration basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
The inlet device: pipe or
The pipe is clogged (if
Unclog the pipe. Dispose of the
swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring io the
Regrade the swale if necessary to
Swale (if applicable),
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Form SW401-Infiltration Basin I&M-Rev.2 Page I of 3
BMP element:
The main treatment area
The embankment
The outlet device
The receivine water
Potential problem:
Sediment has accumulated
and reduced the depth to 75%
of the original design depth.
Erosion has occurred or
riprap is displaced.
Weeds are present.
A visible layer of sediment
has accumulated.
Water is standing more than
5 days after a storm event.
Weeds and noxious plants are
growing in the main
treatment area.
Shrubs or trees have started
to grow on the embankment.
An annual inspection by an
appropriate professional
shows that the embankment
needs repair.
Clogging has occurred
The outlet device is damagec
Erosion or other signs of
damage have occurred at the
outlet.
How I will remediate the problem:
Search for the source of the
sediment and remedy the problem if
possible Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand. If pesticides are used, wipe
them on the plants rather than
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP. Replace any media that
was removed in the process.
Revegetate disturbed areas
immediately.
Replace the top few inches of filter
media and see if this corrects the
standing water problem. If so,
revegetate immediately. If not,
consult an appropriate professional
for a more extensive repair.
Remove the plants by hand or by
wiping them with pesticide (do not
Remove shrubs or trees
immediately.
Make all needed repairs.
Clean out the outlet device. Dispose
of the sediment off -site.
Repair or replace the outlet device.
Contact the NC Division of Water
Quality 401 Oversight Unit at 919-
733-1786.
Form SW401-Infiltration Basin I&M-Rev.2 Page 2 of 3
permit Number:
(to be provider/ by DWQ
I acknowledge and agree by my signature below that 1 am responsible for the
performance of the maintenance procedures listed above. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name: Artisan Marble and Tile, �yfiq,
BMP drainage area number: 1
Print name: Francis Elbers
Title: Owner / Applicant
Address: 206 Villa Dunes Drive, Nays Head, NC 27959
vale: r L— j _ o
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.
h t c fie Y Sm i±h , a Notary Public for the State of
t�l -+h G(Y11 t)1( , County of (2(If:)21+ ) , do hereby certify that
-fmr)c - t 5 F[be rS personally appeared before me this 1
day of d'eC emkeC. -`a_F, and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
M. S
�i.
NOTARY
PUBLIC
SEAL
My commission expires to — I I — a 01 1
Form SW401-Infiltration Basin I&M-Rev.2 page 3 of 3
0
--r r
L Jl '�
Permit Number:
(to he proi,ided by DIVQ)
Drainage Area Number:
Permeable Pavement Inspection and Maintenance Agreement
DEC 1 9 2007
'f /'4d-;Ad fvtilhkeep a maintenance record on this BMP. This maintenance record will be kept in a
�: 'i ': � tt'e 1'kd'
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.
Important maintenance procedures:
— Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the permeable pavement.
— The area around the perimeter of the permeable pavement will be stabilized and
mowed, with clippings removed.
— Any weeds that grow in the permeable pavement will be sprayed with pesticide
immediately. Weeds will not be pulled, since this could damage the fill media.
— Once a year, the permeable pavement surface will be vacuum swept.
The permeable pavement will be inspected once a quarter and within 24 hours after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
Records of inspection and maintenance will 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 1 will remediate theproblem:
The perimeter of the
permeable pavement
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
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 3
long.
to 6 inches remove clippings).
The surface of the
Trash/debris is present.
Remove the trash/debris.
permeable pavement
Weeds are growing on the
Do not pull the weeds (may pull out
surface of the permeable
media as well). Spray them with
Pavement.
herbicide.
Sediment is present on the
Vacuum sweep the pavement.
surface.
The structure is deteriorating
Consult an appropriate
or damaged.
professional.
The pavement does not water
Vacuum sweep the pavement. If the
between storms.
pavement still does not dewater,
consult a professional.
Form SW401-Pemleable Pavement I&M-Rev.2 Page 1 of 2
k
Permit Number:
(to be provider! by D111Q)
1 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: Artisan Marble and Tile
BA4P drainage area number:
Print name: Francis Elbers
Title: Owner / Applicant
Address: 206 Villa Dunes Drive, Nags Head, NC 27959
Date: _ 1 —
Note: The legally responsible party should not be a homeowners association unless more than 500A of'
the lots have been sold and a resident of the subdivision has been named the president.
1, 0ir- l(- /Y a Notary Public for the State of
- , County of C L, rtnt }{ )! I G-, do hereby certify that
7:R tric personally appeared before me this
day of`Cem%( ��, and acknowledge the due execution of the
forgoing permeable pavement maintenance requirements. Witness my hand and official
seal,
�OGO M. SM�i
0TARy
PUBLIC
SEAL
My commission expires_10 - t l' ;LO t
Form SW401-Permeable Pavement I&M-Rev.2
Page 2 of 2
Permit Number:
(to be provided by DWQ)
..\ �,.,�,`��=r.•k�' Drainage Area Number:
Infiltration Trench Inspection and Maintenance Agreement
DEC 19 2007
t�( I will1keep a maintenance record on this BMP. This maintenance record will be kept in a
log ui 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.
Important maintenance procedures:
— The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
— The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter and within 24 hours after every
storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of
inspection and maintenance will 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 theproblem:
The entire BMP
Trash debris is present.
Remove the trash debris.
The grass filter strip or
other pretreatment area
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
structure (if applicable)
The structure is clogged.
Unclog the conveyance and dispose
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
Form S W401-Infiltration Trench I&M-Rev.2 Page 1 of 3
BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is ponding on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.,
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a location that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench.
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the DWQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Trench I&M-Rev.2
Page 2 of 3
Permit Number:
(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: Artisan Marble and Tile
BMP drainage area number:
Print name: Francds Elbers
Title: Owner / Applicant
Address: 206 Villa Dunes Drive, Nags Head, NC 27959
Date:
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.
e—, L s < Q a Notary Public for the State of
k( County of do hereby certify that
6C,.L Cr o J personally appeared before me this
day of �EevQ,� Cry , ico , and acknowledge the due execution of the
forgoing infiltration trench maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires % OcJ�
Form SW401-Infiltration Trench I&M-Rev.2
Page 3 of 3
' Permit No.
(to be provided by DWO)
AN
020�WAtF'?
STORMWATER MANAGEMENT PERMIT APPLICATION FORM p� €
NC®ENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
Contact Person
Phone Number
Date
Drainage Area Number
Ill. DESIGN INFORMATION
Site Characteristics
Drainage area
Impervious area
Percent impervious
Design rainfall depth
Peak Flow Calculations
Is pre/post control of the 1-yr 24-hr peak flow required?
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Pre/Post 1-yr, 24-hr peak flow control
Storage Volume: Non -SR Waters
Minimum design volume required
Design volume provided
Storage Volume: SR Waters
David A. Deel, P.E.
62,539.00 ftz
40,139.00 ft2
0.64
1.0 in e-Q, aws i o Al loxl is Ocea r)
(Y or N)
in
in/hr
ft'/sec
ha/sec
fa/sec:
4,366 It,
8,043. ft' OK for non -SR waters
1-yr, 24-hr rainfall depth in
Pre -development 1-yr, 24-hr runoff h3
Post -development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Top elevation
T-
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
OuB/NeC
2.00 n/hr
7.00 fmsl
0.83
days
OK
3
:1
OK
9.00
fmsl
OK
11.30
fmsl
11.80
fmsl
420 It
4 If (AV5.)
1,773 ft2
77
DEC 1 9 2007
DfiviQ
Form SW401-lnfiltrat,on Basin-Rev.1 Parts I. & II. Design Summary, Page 1 of 2
Permit
Additional Information
(to be provided by DWO)
Total runoff volume captured by basin
Length of vegetative filter for overflow
0. 186
N/A
ac-in
It
OK 6-EK(20 aclaje vroO&A
Distance to structure
40
ff
OK
Distance from surface waters
>500'
It
OK
Distance from water supply well(s)
N/A
ft
OK
Separation from impervious soil layer
N/A
It
OK
Naturally occuring soil above shwt
2
ft
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Recorded drainage easement provided?
N/A
(YorN)
OKE- lorrvale (aul(ty lecalecc on-3ird
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
N/A
(Y or N)
OK rLXcei5 170eale Ffooded
Pretreatment device provided
Y
Surnos within Droo Inlets
Form SW401-Infiltration Basin-Rev.1 Paos I. & 11. Design Summary, Page 2 of 2
Permit
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
I_ git* ls Sheet No.
�H➢) Sheet 2 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- OH -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Trench dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
Sheet 2 2. Partial plan (1" = 30' or larger) and details for the infiltration trench showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filter, and
-Pretreatment device.
Sheets 7, 8 3. Section view of the infiltration basin (1" = 20' or larger) showing:
- Pretreatment and treatment areas, and
-Inlet and outlet structures.
Narrative 4. A table of elevations, areas, incremental volumes & accumulated volumes to verity the volume provided.
Narrative 5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
Sheet 2 6. An assurance that the installed system will meet design specifications upon initial operation once the
project is complete and the entire drainage area is stabilized.
_ Shee15 7. A construction sequence that shows how the infitlration basin will be protected from sediment until the
entire drainage area is stabilized.
Narrative 8. The supporting calculations.
Attached 9. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
N/A 10. A copy of the deed restriction.
Form SW401-Infiltration Trench-Rev.1 Part III. Required Items Checklist, Page 1 of 1