SW7080810_CURRENT PERMIT_20080902

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW _ 2Oa4f%
DOC TYPE
VP CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE�(JgjJ�
YYYYMMDD

Fig
OG
Michael F. Easley, Governor
William G. Ross Jr, Secretary
rNorth
Carolina Department of Environment and Natural Resources
—i
Y
Coleen H. Sullins, Director
Division of Water Quality
Mr. Ed Mitchell September 2, 2008
River Dunes Corporation
416-A Pollock Street
New Bern, NC 28560
Subject: Stormwater Permit No. SW7080810
River Dunes Marina and Residential Development
— RV & Boat Storage Area
High Density Subdivision Project
Dear Mr. Mitchell: Pamlico County
The Washington Regional Office received a complete Stormwater Management Permit
Application for River Dunes Marina and Residential Development — RV & Boat Storage Area
on August 13, 2008. 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. SW7080810, dated September 2, 2008, for the
construction of the project, River Dunes Marina and Residential Development — RV & Boat
Storage Area.
This permit shall be effective from the date of issuance until September 2, 2018, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit. Failure to establish an adequate
system for 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 150E 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 Samir Dumpor, or me at [phone].
Sin ely,
od
Regional Supervisor
Surface Water Protection Section
AH/sd: J:\WPDATA\WQS\Samir - State SW\Permits — Infiltration
cc: Curtis Blazier, PE, McKim & Creed, PA (1730 Varsity Dr., Suite 500, Raleigh, NC
27606)
Pamlico County Building Inspections
✓Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: %svw.ncwaterqualitv.ore One
943 Washington Square Mall Phone [phone] NorthCarolina
Washington, NC 27889 Fax [phone] � l tuml y
An Equal Opportunity/Affirmative Action Employer —50%Recycled/10% Post Consumer Paper �/Vlib sLt`(

State Stormwater Management Systems
Permit No. SW7080810
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
River Dunes Corporation
River Dunes Marina and Residential Development — RV & Boat Storage Area
Pamlico County
FOR THE
construction, operation and maintenance of four infiltration basins 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.
This permit shall be effective from the date of issuance until September 2, 2018, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 264,706 square feet of
impervious area. This basin must be operated with a 50' vegetated filter.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. 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.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 8

State Stormwater management systems
Permit No. SW7080810
6. The following design criteria have been provided in the infiltration basin and must
be maintained at design condition:
Basin RV-1
Basin RV-2
a.
Drainage Area, acres:
2.60
2.55
b.
Total Impervious Surfaces, ft2:
85,153
86,067
C.
Design Storm, inches:
1.5
1.5
d.
Basin Depth, feet:
2.00
2.00
e.
Bottom Elevation, FMSL:
2.50
2.50
f.
Bottom Surface Area, ft2:
6,616
13,795
g.
Permitted Storage Volume, ft3:
20,581
21,206
h.
Type of Soil:
Loamy Sand
Loamy Sand
i.
Expected Infiltration Rate, in/hr:
1.30
1.30
j.
Seasonal High Water Table, FMSL:
0.50
0.50
k.
Time to Draw Down, hours:
44
40
I.
Receiving Stream/River Basin:
Parris Creek
Neuse River
Neuse River Basin
M.
Stream Index Number:
27-141-6
27-(118)
n.
Classification of Water Body:
"SA, HQW, NSW"
Basin RV-3
Basin RV-4
a.
Drainage Area, acres:
1.32
1.29
b.
Total Impervious Surfaces, ft2:
46,416
47,070
C.
Design Storm, inches:
1.5
1.5
d.
Basin Depth, feet:
2.00
2.00
e.
Bottom Elevation, FMSL:
3.00
3.50
f.
Bottom Surface Area, ft2:
2,640
2,886
g.
Permitted Storage Volume, ft3:
7,068
7,084
h.
Type of Soil:
Loamy Sand
Loamy Sand
i.
Expected Infiltration Rate, in/hr:
1.30
1.30
j.
Seasonal High Water Table, FMSL:
0.50
0.50
k.
Time to Draw Down, hours:
37
29
I.
Receiving Stream/River Basin:
Neuse River
Page 3 of 8

State Stormwater Management Systems
Permit No. SW7080810
Neuse River Basin
M. Stream Index Number: 27-(118)
n. Classification of Water Body: "SA, HQW, NSW"
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
Page 4 of 8

State Stormwater Management Systems
Permit No. SW7080810
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 or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee at all times.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. 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.
4. 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.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Page 5 of 8

State Stormwater Management Systems
Permit No. SW7080810
Sediment Control Planning and Design Manual.
Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
10. This permit shall be effective from the date of issuance until September 2, 2018.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
Permit issued this the 2nd day of September, 2008.
NA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No. SW7080810
Page 6 of 8

oiaie ocormwaier management oystems
Permit No. SW7080810
River Dunes Marina and Residential Development— RV & Boat Storage Area
Stormwater Permit No. SW7080810
Pamlico 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)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 7 of 8

State Stormwater Management Systems
Permit No. SW7080810
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 bypass structure weir elevation is per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the 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.
cc: NCDENR-DWQ Regional Office
Pamlico County Building Inspections
Page 8 of 8

•
l J
•
DWQ USE ONLY
Dale Received Fee Paid Permit Number
I ZoD O W "108�8 O
State of Nor{h Carolina
IlVECE W" E® Department of Environment and Natural Resources
Division of Water Quality
At;G 13 2008
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
DW6X-GtlARO 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):
Rver Dunes Corporation
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Mr. Ed Mitchell President ✓
3. Mailing Address for person listed in item 2 above:
416-A Pollock Street
Citv:New Bern State:NC Zip:28560
Phone: [phone] Fax: [phone]
EmaiLed. mitchell©riverdu nes.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
River Dunes Marina and Residential Development
RV and Boat Storage Area
5. Location of Project (street address):
SR 1317 Orchard Creek Road
City:Oriental County:Pamlico Zip:28571.
6. Directions to project (from nearest major intersection):
From the intersection of NC 55 and Straight Road right on Straight Road right on Orchard Creek Road (SR
1317), right on Old Lighthouse Road (Proposed)
7. Latitude:350 04' 45" N Longftude:76° 36' 25" W of project
8. Contact person who can answer questions about the project:
Name:Ed Mitchell Telephone Number: (252 1 634-3373
Eniail:ed.niitchell@riverdunes,.com
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ®New [—]Renewal ❑Modification
Form SWU-101 Version 03.27.08
Page] of 4

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 SNIP []Other
4. 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 ❑404/401 Permit ❑NPDES Stormwater
u
III. 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 .
Stormwater will be treated using multiple infiltration basins Level spreader overflow devices, located on berms
surrounding the basins andvegetated filter strips will be used to treat stormwater and discharge it to the
2. Stormwater runoff from this project drains to the Neuse River basin.
3. Total Property Area: 7.71 acres 4. Total Wetlands Area: 0 acres
5. 100' Wide Strip of Wetland Area: N/A acres (not applicable if no eoetlands exist on site)
6. Total Project Area**:7.71 acres 7. Project Built Upon Area:78 %
8. 1-low many drainage areas does the project have?4
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.
C,.« hi,.1 dFit., „r„ects n,nlar,� fhv tahla with nne drainage area for each engineered stormwater device.
♦o w-u uu�o..v..,.......r�.,......-_..._--------______._.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
See
Attached
Stream Class & Index No.
Total Drainage Area (sf)
On -site Drainage Area (so
Off -site Drainage Area (sf)
Existing Impervious* Area (sf)
Proposed Impervious*Area (sf)
% Impervious* Area (total)
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
On -site Streets (sf)
On -site Parking (sf)
On -site Sidewalks (so
Other on -site (so
Off -site (so
Total (sf):
Form SWU-101 Version 03.27.09
Page 2 of 4

Impervious area is deferred as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
• urrent policy regarding inclusion of wetlands in the built upon
Total project area shall be calculated based on the c
area percentage calculation. This is the area used to calculate percent project built upon area (BUA).
10. Flow was the off -site impervious area listed above
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. Forms can
be downloaded from httn //h2o ear state nc us/su bmo forms.htm - deed restrictions.
Form DRPC-1 High Density Commercial Subdivisions
Form DRPC-2 High Density Developments with Outparcels
Form DRPC-3 High Density Residential Subdivisions
Form DRPC-4 Low Density Commercial Subdivisions
Form DR PC-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 forn(s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the
status and availability of these forms. Forms can be downloaded from
htto'//h2o ear shte nc us/su/bmn forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet Svstem
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SWU-101 Version 03.27.08
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Fage 3 of 4

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 hum://h2o enr state nc us/su/lnsi mans.hun)
•
v
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item. Ins
• Original and one copy/ of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part 1 V above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMF
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of Stormwater treatment/managemeni
• Copy of any applicable soils report
• Two 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)
VIL 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. (ex. designing engineer or firm)
Designated agent (individual or firm):McKim & Creed P.A.
Mailing Address:]730 Varsity Drive Suite 500
City:Ralei h
Phone: (919 ) 233-8091
Ema i Lc bl a z i erOmc ki mcreed. co m
Vill. APPLICANT'S CERTIFICATION
State:NC Zip:27606
Fax: (919 ) 233-8031
1, (print or type mmne of person listed irr General Information, item 2) Ed Mitchell
certify that the information included on this permit application form is, to the best of my knowledge, correct and
oject w*11 be construct formance with the approved plans, that the required deed restrictions
and protects cove7ants will be recorde and that the proposed project complies with the req/yirements of 15A
NCAC 2H .100 . // /
Signature:
Form SWU-101 Version 03.27.08 Page 4 of

•
s
Permit Number:
(to be provided bT UIVQ)
�p Drainage Area Number:
AUG 1 3 "" Pnfiltration Basin Operation and Maintenance Agreement
IDWONVAR0
I will keep a maintenance record on this BMP. This maintenance record will be kept in
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 operation 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 in 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 O&M-Rev.3
Page I of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The forebay
Sediment has accumulated
Search for the source of the
and reduced the depth to 75%
sediment and remedy the problem if
of the original design depth.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred or
Provide additional erosion
riprap is displaced.
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticides are used, wipe
them on the plants rather than
spraying.
The main treatment area
A visible layer of sediment
Search for the source of the
has accumulated.
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.
Water is standing more than
Replace the top few inches of filter
5 days after a storm event.
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.
Weeds and noxious plants are
Remove the plants by hand or by
growing in the main
wiping them with pesticide (do not
treatment area.
spray).
The embankment
Shrubs or trees have started
Remove shrubs or trees
to grow on the embankment.
immediately.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Qualitv 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Basin O&M-Rev.3
Page 2 of 3

Permit Number.
(to be provided b,i, DIVQ)
I acknowledge and agree by my signature below that 1 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.
Pr(?ject narne:River Dunes Marina and Residential Development - RV and Boat Storag
BMP dretinage area number:
Print
Title:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
Is the lots have been sold and a resident of the subdivision has been named the president.
1, 91 p', if U), �l/Q(�) lC.//% S , a Notary Public for the State of
NO County ofyr, /�) , do hereby certify that
�I I., -J'r personally appeared before me this 4h
day ofAuqus+ and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
Form SW401-Infiltration Basin O&M-Rev.3
Page 3 of 3

Permit
(to be provided by DWQ)
o�OF WA re. �
®lMa STORMWATER MANAGEMENT PERMIT APPLICATION FORM o
NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Project Name
Contact Person
Phone Number
Date
Drainage Area Number
River Dunes Marina 8
[phone]
811312008
IL'DESIGNJNF.ORMATIONr r ., 'ar- ire ,,r 1
Site Characteristics
Drainage area
Impervious area
Percent impervious
Design rainfall depth
Peak Flow Calculations
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
;1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
basin side slopes
Basin bottom elevation
Storage elevation
Storage SA
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
113,175.00 ft'
85,153.00 ft2
0.75 %
3.00 in
3.48
in
0.15
in/hr
1,641.00
ft'/sec
23,866.00
1
22,225.00
ft'/sec
20,574.00 ft3
20,581.00 ft3
T
ft3
Its
Its
ft3
Loamy Sand
1.30 n1hr
0.50 fmsl
1.83 days
3.00
:1
2.50
fmsl
4.50
fmsl
13,992.96
ft'
5.50
fmsl
596.77 ft
11.10 It
6,616.37 ft'
OK for non -SR waters
OK
OK
OK
Form SW401-Infiltration Basin-Rev.2 Parts I. E 11. Design Summary, Page 1 of 2

Permit
(to be provided by DWQ)
Additional Information
Total runoff volume captured by basin
Length of vegetative filter for overflow
Distance to structure
Distance from surface waters
Distance from water supply well(s)
Separation from impervious soil layer
Naturally occuring soil above shwt
Bottom covered with 4-in of clean sand?
Proposed drainage easement provided?
Capures all runoff at ultimate build -out?
Bypass provided for larger storms?
Pretreatment device provided
5.67
ac-in
180.00
ft
NIA
It
245.00
ft
NIA
it
NIA
ft
3.65
ft
Y
(Y or N)
Y
(Y or N)
Y
(Y or N)
N
(Y or N)
N
Maximum of 2 acre -inches allowed
OK
OK
OK
OK
OK
OK
OK
OK
OK
Must provide bypass for larger (lows
Form SW401-Infiltration Basin-Rev.2 Pans I. & II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
r 1
III. REQUIREDJTEMS 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
Initials
Sheet No.
G%T3-1 1.
Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
,e�—V13
2.
Partial plan IV = 30' or larger) and details for the infiltration basin 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.
V'q 3.
Section view of the infiltration basin (1" = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
CM
�'f%.1/f S4.
A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
SFcfioll
9" 5.
A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
�T�oN
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
6.
A construction sequence that shows how the inftlration basin will be protected from sediment until the
entire drainage area is stabilized.
GM9 1W7. The supporting calculations.
C/h%3&MrAwi 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
GMS 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.2 Page 1 of 1 Part III, Required Items Checklist, Page 1 of 1

f
•
•
Permit Number:
(to he provided by DWO
Drainage Area Number:
AUG 1 3'rifiltration Basin Operation and Maintenance Agreement
DWO-WARO
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
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 operation 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 imtediately.
BMP element:
The entire BMP
The perimeter of the
infiltration basin
Potential roblem:
Trash/debris is resent.
Areas of bare soil and/or
erosive gullies have formed.
How I will remediate the roblem:
Remove the trash debris.
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 ap lication.
The inlet device: pipe or
swale
The pipe is clogged (if
applicable) .
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
swale (if applicable).
Regrade the swale if necessary to
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 O&M-Rev.3
Page 1 of 3

E
I—
L-1
•
BMP element:
The forebay
blem:
accumulated
the depth to 75%
ndepth
l design depth.
How I will remediate the problem:
Search for the source of the
sediment and remedy the problem if
possible. Remove the sedimentand
dispose of it in a location where it
will not cause impacts to streams orthe
BMP.
ccurred or
riprap is displaced
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticides are used, wipe
them on the plants rather than
s pravin .
The main treatment area
A visible laver of sediment
has accumulated.
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
immediatel .
Water is standing more than
5 days after a storm event.
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
In a more extensive re air.
Weeds and noxious plants are
growing in the main
treatment area.
Remove the plants by hand or by
wiping them with pesticide (do not
s rav).
The embankment
Shrubs or trees have started
to ow on the embankment.
Remove shrubs or trees
inmiediatel .
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs re air.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is dama ed
Repair or replace the outlet device.
The receiving water Erosion or other signs of
damage have occurred at the
outlet.
Contact the NC Division of Water
Quality 401 Oversight Unit at 919-
733-1786.
Form SW401-Infiltration Basin O&M-Rev.3
Page 2 of 3

r1
\J
C, J
Permit Number:
(to be provided by D IVQ)
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 nalne:River Dunes Marina and Residential Development - RV and Boat Storage
BMP drainage area
Print
:416-a Pollock Street, New BernNC 28560
Phone:
l
Signature:
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.
, a Notary Public for the State of
jJC County of ORAVfW , do hereby certify that
�Y . personally appeared before me this
day of and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
My commission expires l a - -� ' 9-0 16
Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3

Permit No.
(to be provided by DWQ)
O?Op WAiFgpG
"A
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
o
NCDENR
401 CERTIFICATION APPLICATION FORM
Gs
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submited.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
L8?PRDJECT%INF0RMATI0N:_, e'a:+,a
Project Name
River Dunes Marina & Residential Development - RV and Boat Storage Area
Contact Person
Mr. Ed Mitchell
Phone Number
[phone]
Date
811312008
Drainage Area Number
RV-2
IL4:DESIGN INFORMATION
".A
Site Characteristics
Drainage area
111,263.00 ftz
Impervious area
86,067.00 ft'
Percent impervious
0.77 %
Design rainfall depth
3.00 in
Peak Flow Calculations
1-yr, 24-hr runoff depth
3.48 in
1-yr, 24-hr intensity
0.15 in/hr
Pre-development'1-yr, 24-hr runoff volume
1,613.00 ft'/sec
Post -development 1-yr, 24-hr runoff volume
24,077.00 fl'/sec
Pre/Post 1-yr, 24-hr peak flow control
22,464.00 ft'/sec
Storage Volume: Non -SR Waters
W, inimum design volume required
20,756.00 ft'
Design volume provided
21,206.00 ft' OK for non -SR waters
:.Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
in
Pre -development 1-yr, 24-hr runoff
rya
Post -development 1-yr, 24-hr runoff
ft'
Minimum volume required
ry'
Volume provided
ry'
Soils Report Summary
Soil type
Loamy Sand
Infiltration Tate
1.30
in/hr
SHWT elevation
0.50
mist
Basin Design Parameters
,Drawdown time
1.67
days OK
Basin side slopes
3.00
:1 OK
Basin bottom elevation
2.50
fmsl OK
Storage elevation
4.50
fmsl
Storage SA
13,795.71
ft'
Top elevation
5.50
first
Basin Bottom Dimensions
Basin length
497.71
ft
Basin width
1,479.00
ft
Bottom SA
13,795.71
it'
Form SW401-Infiltration Basin-Rev.2 Pans I. & II. Design Summary, Page 1 of

Permit No.
-
(to be provided by DWq)
Additional Information
Total runoff volume captured by basin
5.84
ac-in
Maximum of 2 acre -inches allowed
•Length of vegetative filter for overflow
80.00
It
OK
Distance to structure
NIA
ft
OK
Distance from surface waters
50.00
ft
OK
Distance from water supply well(s)
NIA
ft
OK
Separation from impervious soil layer
NIA
ft
OK
Naturally occuring soil above shwt
2.00
ft
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
Y
(Y or N)
OK
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
N
(Y or N)
Must provide bypass for larger flows
Pretreatment device provided
N
Form SW401-Infiltration Basin-Rev.2 Parts I. 611. 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
Initials Sheet No.
GMB <= l4 •/ 1. Plans (1" - 50' or larger) of the entire site showing:.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
C474 9-AZ-/a 2. Partial plan (1" = 30' or larger) and details for the infiltration basin 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.
3. Section view of the infiltration basin (1" = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
r 1
U
GLIB V—Y 6945 4.
A table of elevations, areas, incremental volumes &accumulated volumes to verify, the volume provided.
e.W19 6�E , 1�f2¢5.
A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
sic ri4 J
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
6.
A construction sequence that shows how the inf llration basin will be protected from sediment until the
entire drainage area is stabilized.
G/✓J9 Gldl.S 1�. 7.
The supporting calculations.
C/7B PeAlL Al', 8.
A copy of the signed and notarized operation and maintenance (0&M) agreement.
NA 9.
A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.2 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1

Permit No.
(to be Provided by DWQ)
�� o?oe wn regoc
VE STORMWATERMANAGEMENT PERMITAPPLICATIONFORM
o `"" ^$
• NCDENR 401 CERTIFICATION APPLICATION FORM �r
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Contact Person
Phone Number
Dale
Drainage Area Number
River Dunes Manna 8 Residential Development- RV and Boat Storage Area
Mr. Ed Mitchell
[phone]
712212008
RV-3
II, DESIGN INFORMATION,
Site Characteristics
Drainage area
57,491.00
ft'
Impervious area
46,416.00
ft'
Percent impervious
0.81
%
Design rainfall depth
1.50
in
Peak Flow Calculations
1-yr, 24-hr runoff depth
3.48
in
1-yr, 24-hr intensity
0.15
in/hr
Pre -development 1-yr, 24-hr runoff volume
834.00
ft'/sec
Post -development 1-yr, 24-hr runoff volume
12,948.00
ft'/sec
Pre/Post 1-yr, 24-hr peak Flow control -
12,114.00
ft'/sec
Storage Volume: Non -SR Waters
® Minimum design volume required
5,581.00
ft'
Design volume provided
7,068.00
ft' OK for non -SR waters
•
'Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Storage SA
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
my Sand
1.30 in/hr
0.50 fmSI
1.54 days
3.00
:1
3.00
first
5.00
fmsl
4,456.00
It'
6.00
fmsl
92.00 ft
21.20 ft
2,640.00 n'
OK
OK
OK
Form SW401-Infiltration Basin-Rev.2 Pans I. a It. Design Summary, Page 1 of 2

Permit
(to be provided by DWQ)
Additional Information
Total runoff volume captured by basin
0.00
ac-in
®Length of vegetative filter for overflow
125.00
ft
Distance to structure
Nla
ft
Distance from surface waters
60.00
ft
Distance from water supply well(s)
NIA
ft
Separation from impervious soil layer
NIA
It
Naturally occuring soil above shwl
2.50
It
Bottom covered with 4-in of clean sand?
Y
(Y or N)
Proposed drainage easement provided?
Y
(Y or N)
Capures all runoff at ultimate build -out?
Y
(Y or N)
Bypass provided for larger storms?
Y
(Y or N)
Pretreatment device provided
N
®.
10
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Form SW401-Infiltration Basin-Rev.2 Pans I. & II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
11
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
Initials Sheet No.
C h1B I , f3,
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
05�j V4
2. Partial plan (1" = 30' or larger) and details for the infiltration basin 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.
/
3. Section view of the infiltration basin (1" = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
qJ6 s 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
54e.�I o,v
&/JW e£orX 7*5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
S�wV results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
De 6. A construction sequence that shows how the infiltration basin will be protected from sediment until the
entire drainage area is stabilized.
CMB t,&&-ir-6�7j.7. The supporting calculations.
�M8 ELj4lP 8. A copy of the signed and notarized operation and maintenance (00) agreement.
GMg 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.2
Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1

Permit
Ito be provided by DWQ)
AA 0=Of W p ieq�G
o�
STORMWATER MANAGEMENT PERMIT APPLICATION FORM y y
NC ENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Contact Person
Phone Number
Date
Drainage Area Number
[phone]
7/2212008
RVA
I'" -DESIGN= INFORMATION
':'="`
Site Characteristics
Drainage area 56,084.00 11'
Impervious area 47,070.00 ft'
Percent impervious 0,84 %
Design rainfall depth 1.50 in
Peak Flow Calculations
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
1-yr, 24-hr rainfall depth
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Storage SA
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
3.48
in
0.15
in/hr
813.00
ft'/sec
13,098.00
ft'/sec
12,285.00
ft'/sec
5,646.00 ft'
7,084.50 ft'
in
n'
W
ft'
fl'
ny Sand
1.30 inlhr
0.50 fmsl
1.21 days
3.00
:1
3.50
fmsl
5.50
fmsl
4,227.00
ft'
6.50
fmsl
78.24 it
41.99 ff
2,886.00 ft'
OK for non -SR waters
OK
OK
OK
Form SW401-Infiltration Basin-Rev.2 Parts I. a H. Design Summary, Page 1 of 2

Permit
(fa be provided by DWD)
Additional Information
Total runoff volume captured by basin
1.95
ac-in
•Length of vegetative filter for overflow
50.00
ft
Distance to structure
Nla
ft
Distance from surface waters
500.00
ft
Distance from water supply well(s)
NIA
ft
Separation from impervious soil layer
NIA
It
Naturally occuring soil above shwl
3.00
It
Bottom covered with 4-in of clean sand?
Y
(Y or N)
Proposed drainage easement provided?
Y
(Y or N)
Capures all runoff at ultimate build -out?
Y
(Y or N)
Bypass provided for larger storms?
Y
(Y or N)
Pretreatment device provided
N
•
0
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Form SW401-Infiltration Basin-Rev.2 Pans I. a II. Design Summary, Page 2 of 2

Permit
(to be provided by DWQ)
0
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
Initials Sheet No.
/181 C/-I1C3. 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High Flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
V5, 2� 2. Partial plan (1" = 30' or larger) and details for the infiltration basin 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.
L
C B p 3. Section view of the infiltration basin (1" = 20' or larger) showing:
Pretreatment and treatment areas, and
Inlet and outlet structures.
Pt C S 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
SEA onN
C/17,� 6c�PXA. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
s2boo results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
,,2 investigation request form. County soil maps are not an acceptable source of soils information.
C/"/� S T% 6. A construction sequence that shows how the inftlration basin will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations.
C b �+4 i� y�[UY. 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
�1
C1vV A) Id 9. A copy of the deed restrictions (if required).
Form SW401-infiltration Basin-Rev.2 Page 1 of 1 Part ni. Required Items Checklist, Page 1 of 1