HomeMy WebLinkAboutSW6110705_CURRENT PERMIT_20110808STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT. NO.
SW 6dza:%I
DOC TYPE
ZPCURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
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YYYYM M DD
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Co!een H. Sullins
Governor
Mr. Ron Phillips
Picerne Construction/FBG, LLC
903 Armistead Street
Fort Bragg, NC 28307
Director
August 8, 2011
Subject: Stormwater Permit No. SW6110705
Linden Oaks Phase 2G
Overall Low Density Residential Subdivision
Harnett County
Dear Mr. Phillips:
DENR-FRO
SE' 15 2011
DWQ
Dee Freeman
Secretary
The Stormwater Permitting Unit received a complete Stormwater Management Permit
Application for Linden Oaks Phase 2G on August 5, 2011. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000 and Session Law 2006-246. We are forwarding
Permit No. SW6110705, dated August 8, 2011, for the construction, operation and maintenance
of the subject project and the stormwater BMPs.
This permit shall be effective from the date of issuance until August 7, 2021, and shall be subject
to the conditions and limitations as specified therein. The designated permit holders, Bragg
Communities, LLC and the Department of the Army, shall be responsible for meeting the
conditions and limitations specified therein. As required for compliance, a copy of the lease
agreement that outlines Bragg Communities, LLC and the Department of the Army operation and
maintenance responsibilities for this stormwater system, must be kept with the permit and
maintenance activity records. 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.
Please be aware that if the lease agreement between the Department of the Army, the property
owner, and Bragg Communities, LLC, the lessee, is cancelled or defaults, the Department of the
Army shall notify DWQ immediately and shall submit a completed Name/Ownership Change
Form within 30 days otherwise the Department of the Army will be operating a stormwater
treatment facility without a valid permit. This is a violation of NC General Statue 143-215.1 and
ma result in appropriate enforcement action including the assessment of civil penalties of up to
$25,000 per day, being taken against the property owner.
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, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
Wetlands and Slormwaler Branch �17e L, 1 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 NOt't11CaP01llla
PhneLocation: 9 8 N. Salisbury St. Raleigh, North Carolina 27664 �n��N��/�
Phone .n-63901FAX:919-807-6494\Customer Service: 1-877-62'56748 N, L �0
Internet: www.ncuaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
Mr. Ron Phillips
SW61 10705 — Linden Oaks Phase 2G
August 8, 2011
If yo.0 have any questions, or need additional information concerning this matter, please contact
Brian Lowther at (919) 807-6368, or brian.lowther@ncdenr.gov.
Sincerely,
V14-1�
fr,r Coleen H. Sullins
cc: SW6110704 File
ec: Fayetteville Regional Office
Mr. John D. Kuzenski, PE — Kimley-Horn and Associates, Inc.
Page 2 of 2
State Stormwater Permit
Permit No. SW6110705
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
OVERALL LOW DENSITY SUBDIVISION 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
Picerne Construction/FBG, LLC
Linden Oaks Phase 2G
Mt. Mitchell Place and Biltmore Lane, Spout Springs, Harnett County
FOR THE
construction, operation and maintenance of two (2) infiltration basins and one (1)
bioretention cell in compliance with the provisions of Session Law 2006-246 and 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 August 7, 2021 and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application, approved plans, and other supporting data.
2. The overall property built -upon area percentage for the project must be
maintained at 14.63% per the requirements of Session Law 2006-246 of the
stormwater rules.
3. The stormwater systems proposed to treat the runoff generated by the
designated high density areas have been approved for the management of
stormwater runoff as described in Section 1.9 and 1.10 of this permit.
4. The infiltration system is designed, and must be maintained, to infiltrate the 10-yr,
24-hr storm event in lieu of providing a vegetated filter strip and bypass.
5. This project is limited to a maximum of 49 dwellings as indicated in the
application and as shown on the approved plans.
6. The built -upon areas associated with this project shall be located at least 30 feet
landward of all perennial and intermittent surface waters.
Page 1 of 8
State Stormwater Permit
Permit No. SW6110705
7. Within the low density portions of the permitted project, the only runoff
conveyance systems allowed will be vegetated conveyances such as swales with
minimum side slopes of 3:1 (H:V) as defined in the stormwater rules and as
shown on the approved plan.
8. This project proposes a curb outlet system. Each designated curb outlet swale or
100' vegetated area shown on the approved plan must be maintained at a
minimum of 100' long, maintain 5:1 (H:V) side slopes or flatter, have a
longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a
non -erosive manner, maintain a dense vegetated cover, and be located in either
a dedicated common area or a recorded drainage easement.
9. The following design elements have been permitted for the two infiltration basins,
and must be provided in the system at all times.
a. Drainage Area, acres: 3.0 9.0
Onsite, ftZ: 129,747 391,337
Offsite, ftZ: 0 0
b. Total Impervious Surfaces, ftZ: 45,408 123,104
Lot BUA, ft : 22,044 50,757
Roads/Parking, ftZ: 21,198 63,960
Sidewalks, ftZ: 2.166 8,386
Other, ftZ: 0 0
Offsite, ftZ: 0 0
C. Design Storm, inches: 1.0 1.0
f. Bottom Elevation, FMSL: 345.0 335.0
g. Bottom Surface Area, ftZ: 5,178.0 13,877.0
h. Bypass Elevation, fmsl: 348.0 338.0
i. Permitted Storage Volume, ft3: 14,275 23,786 (at temporary pool)
I. Type of Soil: Fine to Medium sand
M. Infiltration Rate, in/hr : 10.0 11.0
n. Seasonal High Water Table, fmsl: 342.0 332.8
o. Time to Draw Down, days: 0.11 0.09
p. Receiving Stream / River Basin: Muddy Creek / Cape Fear
q. Stream Index Number: 18-23-26
r. Classification of Water Body: "C"
10. The following design criteria have been provided for the bioretention basin and
must be maintained at design condition:
a. Drainage Area, ?cres: 3.8
Onsite, ft : 164,484
Offsite, ftZ: 0
b. Total Impervious Surfaces, ftZ: 42,963
Onsite, ft. : 42,963
Offsite, ftZ: 0
C. Design Storm, inches: 1.01,
d. Max. Ponded Depth, feet: 12"
e. Seasonal High Water Table, fmsl: 357'
f. Planting Media Depth, feet: 2'
g. Basin Dimensions, feet: 135' by 74'
h. Bottom Elevation, fmsl: 359'
i. Surface Area of the top, ftZ: 6,281.0
j. Permitted Storage Volume, ft3: 5,827.5
k. Bypass / Storage Elevation, fmsl: 363.0
I. Drawdown Time, hours: 18 hours
M. Underdrain Diameter, inches: 4"
n. Total number of plants provided: Sod
o. Receiving Stream/River Basin: Muddy Creek / Cape Fear
Page 2 of 8
State Stormwater Permit
Permit. No. SW6110705
P. Stream Index Number: 18-23-26
q. Classification of Water Body: "C"
II. SCHEDULE OF COMPLIANCE
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature
(such as swales) shown on the approved plans as part of the stormwater
management system without submitting a revision to the permit and receiving
approval from the Division.
2. The permittee is responsible for verifying that the proposed built -upon area for
the entire lot/property does not exceed the maximum allowed by this permit.
Once the lot transfer is complete, the built -upon area may not be revised without
approval from the Division of Water Quality, and responsibility for meeting the
built -upon area limit is transferred to the individual property owner.
3. If an Architectural Review Board or Committee is required to review plans for
compliance with the BUA limit, the plans reviewed must include all proposed
built -upon area. Any approvals given by the Board do not relieve the homeowner
of the responsibility to maintain compliance with the permitted BUA limit.
4. 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.
5. 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.
6. The runoff from all built -upon area within the drainage area of the pocket of high
density permitted stormwater system must be directed into the permitted
stormwater control system.
7. Within the low density portions of the permitted project, all roof drains shall
terminate at least 30 feet from surface waters.
8. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for
which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
9. The Director may determine that other revisions to the project should require a
modification to the permit.
10. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
Page 3 of 8
State Stormwater Permit
Permit No. SW61'10705
must be recorded showing all such required easements, in accordance with the
approved plans.
11. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
12. 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.
13. 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.
14. Permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control
Planning and Design Manual.
15. This permit shall become void unless the facilities are constructed in accordance
with the conditions of this permit, the approved plans and specifications, and
other supporting data.
16. The permittee shall at all times provide the operation and maintenance
necessary to assure that all components of the permitted stormwater system
function 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 3 months).
b. Sediment removal.
C. Mowing and re -vegetation of side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans.
f. Debris removal and unclogging of bypass structure, catch basins, piping,
and infiltration media.
g. Access to all components of the system must be available at all times.
17. Records of maintenance activities must be kept by the permittee. The records will
indicate the date, activity, name of person performing the work and what actions
were taken.
18. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance and inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, and the maintenance
work performed at each inspection.
19. Prior to transfer of the permit, the stormwater facilities will be inspected by DWQ
personnel. The facility must be in compliance with all permit conditions. Any
items not in compliance must be repaired or replaced to design condition prior to
the transfer. Records of maintenance activities performed to date will be
required.
20. A copy of the lease agreement that outlines Bragg Communities, LLC and the
Department of the Army operation and maintenance responsibilities for this
stormwater system, must be kept with the permit and maintenance activities
records.
Page 4 of 8
State Stormwater Permit
Permit No. SW6110705
21. If the current lease agreement between the Department of the Army, the property
owner, and Bragg Communities, LLC, the lessee, is cancelled or defaults, the
Department of the Army shall notify DWQ immediately and shall submit a
completed Name/Ownership Change Form within 30 days.
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event there is either a desire for the facilities to
change ownership, or there is a name change of the Permittee, a completed
"Name/Ownership Change Form" must be submitted to the Division of Water
Quality, signed by the parties involved, along with the applicable documents as
listed on page 2 of the form. The project must be in good standing with DWQ.
The approval of this request will be considered on its merits and may or may not
be approved.
2. The permittee is responsible for compliance with all of the terms and conditions
of this permit until such time as the Director approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal), which have jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take ininnediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems:
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
7. Permittee grants permission to staff of the DWQ to access the property for the
purposes of inspecting the stormwater facilities during normal business hours.
8. Approved plans and specifications for this project are incorporated by, reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes within 30 days.
10. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
11. The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Page 5 of 8
State Stormwater Permit
Permit No. SW6110705
Permit issued this the 8th day of August, 2011.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
/or L;oieen t i. sunins, uirector
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 8
State Stormwater Permit
Permit No. SW6110705
Linden Oaks Phase 2G Page 1 of 2
Stormwater Permit No. SW6110705
Harnett 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 a part of this Certification.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 7 of 8
Certification Requirements:
State Stormwater Permit,
Permit No. SW6110705
Page 2 of 2
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 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 volume have been provided.
12. All curb outlet vegetated swales/areas have side slopes no steeper than
,1.,
13. All required design depths are provided.
14. All required parts of the system are provided per the approved plans.
15. The required dimensions of the system are provided, per the approved
plans.
Please submit this Designer's Certification to: Fayetteville Regional Office
Surface Water Protection
225 Green Street
Systel Building Suite 714
Fayetteville, NC 28301-5043
FBI
Local Building Inspector
Page 8 of 8
' DWQ USE ONLY
Date Received
Fee Paid
Permit Number
$5oS 373
t v t t o^ o
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
LSVU5u v L5
State of North Carolina W
Department of Environment and Natural Resources FUL
1 9 ZOiI
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLIC.
This form may be photocopied for use as an original
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.):
Linden Oaks Phase 2G
2. Location of Project (street address):
Linden Oaks Neighborhood
0City:S out Springs Coumy:Harnett County Zip:28326
7� `3. Direct ons to project (from nearest major intersection):
Head South on Rockefeller Boulevard from the intersection of Percy Boulevard and Rockefeller Boulevard.
Turn right onto Mt Mitchell Place until it ends at the project site.
4. Latitude:350 14' 44" N Longitude:790 2' S4" W of the main entrance to the project.
Il. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) and the status of
construction: ❑Not Started El Partially Completed* ❑ Completed* *provide a designer's
certification .
2. Specify the type of project (check one):
®Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from
DWQ requesting a state stormwater management permit application, list the stormwater project number,
if assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentadon/ Erosion Control: 34.43 ac of Disturbed Area
❑NPDES Industrial Stormwater E404/401 Permit: Proposed Impacts 249 LF Stream Impact in Adjacent
Phase
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 permit404/401 Permit: 05-2012, Ver. 3
Form SWU-101 Version 07.1=2010 Page I of
.J
III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the oroiect):
Applicant/Organization:Picerne Construction/FBG, LLC '
Signing Official & Title: Ron Phillips, Regional Vice President of Construction
b.Contact information for person listed in item 1a above:
Street Address:903 Armistead Street
City:Fort Bragg State:NC Zip:28307
Mailing Address (if applicable):Same as above
City:
Phone: (910 ) 764-4500 Fax: (910 ) 497-4218
Email:rl?hillil2s@12icernemh.com
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:BraggCommunities LLC By: BraggPicernePartners LLC itsmanagingmember
Signing Official & Title:lohn Shay, Vice President
b.Contact information for person listed in item 2a above:
Street Add
City:FortBragg
Mailing Address (if applicable):
Phone: (910 ) 764-4500
Email:ishay@picernemh.com
State:NC Zip:28307
State:
Fax: (910 ) 497-5924
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:
Signing Official &
b.Contact information for person listed in item 3a above:
Mailing Address'
City: Stab
Phone: ( ) Fax:
4. Local jurisdiction for building permits:
Point of Contact: Phone #:
Form SWU-101 Version 07Jun2010 Page 2 of 7
IV. PROJECT INFORMATION
1. In the space provided below, brLefly summarize how the stormwater runoff will be treated.
The impervious percentage of the site is approximately 14 63°/ of the total site area This qualifies as Low
Density based on the previously approved 404/401 Permit # 05-2012 Ver. 3 The stormwater runoff is
primarily transported through vegetative conveyances Three infiltration BMP's are proposed where
additional storm pipes were needed Refer to the stormwater analysis for a more detailed description.
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 Cape Fear River basin.
4. Total Property Area: 392.1 acres 5. Total Coastal Wetlands Area: 43.1 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Arw:349.0 acres
Total project area shall be calculated to exclude the follooing the normal pool of impounded structures, the area
bet7u'en ttue area
of streams and rivers, the area be10711 the Norval High Water (NHW) line or Mean Hilt Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BU& Non -coastal 7oetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 =14.63
9. How many drainage areas does the project have?3 (For high density, count 1 for each proposed engineered
stonnevater BMP. For 107o density and other projects, use 1 for file 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 2
Draina e Area 3
Draina e Area 4
Receiving Stream Name
Muddy Creek
Overhills Lake
Muddy Creek
Overhills Lake
Muddy Creek
Overhills Lake
Muddy Creek
Overhills Lake
Stream Class
C
C
C
C
Stream Index Number *
18-23-26
18-23-26
18-23-26
18-23-26
Total Drainage Area (so
164,484
129,747
391,337
16,394,308
On -site Drainage Area (sf)
164,484
129,747
391,337
16,394,308
Off -site Drainage Area (so
0
0
0
0
Proposed Impervious Area**
s
42,963
45,408
123,104
2,012,585
Impervious Area** total
26.097.
34.98%
31.47%
12.28%
Impervious" Surface Area
Drainage Area 1
Drainage Area 2
Draina e Area 3
Draina e Area 4
On -site Buildings/Lots (sf)
16,010
22,044
50,757
59,591
On -site Streets (so
11,136
10,256
33,109
47,141
On -site Parking (sf)
12,677
10,942
30,851
31,442
On -site Sidewalks (sf)
3,139
2,166
8,386
10,562
Other on -site (so
0
0
0
0
Future (so
0
0
0
1,390,006
Off -site (sf)
0
0
0
0
Existing BUA*** (so
0
0
0
473,843
Total (si):
42,963
45,408
123,104
2,012,585
* Stream Class and Index Number call be deternined at: ham'//uortal rucdenr org aeb/i)tl s/cswctassurycaaous
Form SWU-101 Version 071un2010 Page 3 of 7
** Ern pervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
siderualks, gravel areas, etc.
***Report only that amount of existing BUA that Will remain after development. Do not report any existing BUA that
is to be removed and which Will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. N/A
Projects in Union County: Contact DWQ Central Ojjice staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 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 http://portal.ncdenr.org/web/wq/ws/su/bmp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. A detailed application instruction sheet
and BMP checklists are available from ht!p://portil.ncdenr.org/web/wq/ws/-SU/--statesw/forms does. The
complete application package should be submitted to the appropriate DWQ Office. (The appropriate office
may be found by locating project on the interactive online map at
http://poi-tal.ncdenr.org/web/wq/`ws/`su/maps.)
Please indicate that the following required information have been provided by initialing in the space
provided for each item. All original documents MUST be signed and initialed in blue ink. Download the latest
versions for each submitted application package from
httl2://portal.ncdetir.org/web/wq/ws/su/statesw/forms does.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants NIA
Form. (if required as per Part Vll below)
3. Original of the applicable Supplement Form(s) (sealed signed and dated) and O&M�
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
htto'//www.envhelp.org/12ages/onestopexl2ress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
5. A detailed narrative (one to two pages) describing the stormwater treatment/management for
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2 i
mile radius on the map.
7. Sealed, signed and dated calculations.
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
Form SWU-101 Version 07Jun2010 Page 4 of 7
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
Ve elated buffers (where required)
P g
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify �--
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x1l" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verifij the SHWA prior
to submittal, (910) 796-7378.)
10. A copy of the most current property deed. Deed book: Page No:
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 NCAC 21-1.1003(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.
httly //www.secretary.state.nc.us/Corporations/CSearch.aspx
VIL DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be
provided as an attachment to the completed and notarized deed restriction form. The appropriate deed
restrictions and protective covenants forms can be downloaded from
http://Vortil.ncdenr.org/web/wq/ws/su/statesw/fornis dots. Download the latest versions for each
submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot.
VILL 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:lohn D. Kuzenski P.E.
Consulting Firm: Kin-dey-Horn and Associates Inc
Mailing Address:333 Fayetteville Street Suite 600
City:Raleigh State:NC Zip:27601
Phone: (919 1 653-2990 Fax: (919 ) 653-5947
Email:iohn.kuzenski@kin-dey-horn.com
Form SWU-101 Version 071un2010 Page 5 of 7
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) lohn Shay , 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 la) Ron Phillips with (print or type name of organization listed in
Contact Infonmation, item la) Picerne ConstrucfionIF1IG LLC to develop the project as currently proposed.
A copy of the lease agreement or pending property sales contract has been provided with the submittal, which
indicates the party responsible for the operation and maintenance of the stormwater system.
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my
designated agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or
defaults on their lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater
permit reverts back to me, the property owner. As the property owner, it is my responsibility to notify DWQ
immediately and submit a completed Name/Ownership Change Form within 30 days; otherwise I will be
operating a stormwater treatment facility without a valid permit. I understand that the operation of a
stormwater treatment facility without a valid it is a violation of NC General Statue 143-215.1 and may
result in appropriate enfo m nt actin n g the assessment of civil penalties of up to $25,000 per day,
pursuant to NCGS 14 15.6. / r�
Signature: / Date: t Ib ocOl�
I, kotii, he P otary Public for the State of 11501-Nk CQVC kt, , Countyof
do hereby
personally appeared
v
before me this 10 ay of i J Q(( , and acki owled t e due execution of the application for
a stormwater permit. Witness my hand and official seal,
`A\ ",�A MCC, a
NOTARYG
PUBLIC
s
SEAL
My commission expires S ^' I ^ I�O l q
Form SWU-101 Version 07Jun2010 Page 6 of 7
1
L
. __
In j-
X. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in Contact Infornmtion, item 1a) Ron Phillips
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constr cted in conformance with the approved plans, that the required deed restrictions
and prote ve co enants w' e recorde nd that the proposed project complies with the requirements of the
applicable ter ater ru n er 1 C C 2H .1000, SL 2006-246 (Ph. 11- Post Construction) or SL 2008-211.
Signature: Date:
I, 1 a Notary Public for the State of � Vt 1//r.Y0 [ita,Crzounty of
�O Ice , do hereby cerfi that QnkA personally appeared
before me this 15 , of �b �(_, and ackno ledge to due eXecutiongf the application for
a stormwater permit. Witnes my h d and official seal, _ C1l c � D,r t
oxX01\N MCCqf�%:,,%
NOTAAY':�c
i
s PUBLIC i
SEAL
My commission expires t/ I I— 0 0 I l
Form SWU-101 Version 07Jun2010 Page 7 of 7
a
9
Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be
found in Session Law 2008-211, 15A NCAC 2H .1000, Session Law 2006-246, and the DWQ BMP Manual.
Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g).
I. PROJECT INFORMATION
Project Name : Linden Oaks Phase 2G
Contact Person: John Kuzenski Phone Number: ( 919 )653-2990
Number of Lots:I Allowable Built Upon Area (BUA) Per Lot*:14.63%
Number of Dwelling Units Per Acre**:
Low Density Development (check one): ® without curb & gutter ® with curb & gutter, outlets to (check one):
® Swales ® Vegetated Area
*If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon area for each lot.
The attachment must include the project name, phase, page numbers and provide area subtotals and totals. BUA shall be
shown in units of square feet.
**(Phase 11 Post -Construction (non -SA) only)
IL BUILT UPON AREA
Refer to DWQ's forms and applications website for specific language that must be recorded in the deed
restrictions for all subdivided projects. (http://h2o.enr.state.nc.us/suibmp_fonns.htm)
Complete the following calculation in the space provided below where:
• SA Site Area - the total project area above Mean High Water.
• DF Density Factor - the appropriate percent built upon area divided by 100.
• RA Road Area - the total impervious surface occupied by roadways.
• CA Other Area - the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. of Lots - the total number of lots in the subdivision.
• BUA per Lot - the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front lot line and the edge of pavement.
• Total allowable lot BUA - the computed allowable built upon area for all lots combined.
• Total BUA from lot listing - the sum of built upon area allocated for each lot on the list of non -uniform lots.
Form SW401-Low Density-Rev.3-2/10/09 Page I of 4
For uniform lot sizes:
(SA 15 202 440 ft2 x DF 0 1463) - (RA: 0 ft2) - (OA: 0 ft2) = BUA per Lot = 2,224,061 ft2
(No of Lots: 1)
For non -uniform lot sizes:
a. (SA: ft2 x DF: ) - (RA: ft2) - (OA: ft2) = Total allowable lot BUA = ft2
b. Total BUA from lot listing: 2,224,061 sf b must be < a
III. DESIGN INFORMATION
Complete the following table. If additional space is needed the information should be provided in the same
format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State of
North Carolina Erosion and Sediment Control Planning and Design Manual or at
http://hdsc.nws.noaa.gov/hdse/pfds/
0.... 1 A....:,...h-A __ ft,n 1 n,v .. cfnrm
Swale No.
Drainage
Area ac
Impervious
Area (ac
Grassed
Area ac
C
Q
(cfs
Slope
(%)
V�,, w
(fps)
Vw,,ai
(fps)
Flow
Depth (ft)
1
0.272
0.136
0.136
0.50
1.07
2.00
2.5
0.98
0.3
2
0:335
0.168
0.168
0.50
1.32
2.00
2.5
0.96
0.3
3
0.312
0.156
0.156
0.50
1.23
2.00
2.5
1.62
0.53
4
0.279
0.140
0.140
0.50
1.10
2.00
2.5
0.96
0.3
5
5.129
2.565
2.565
0.50
20.21
2.00
2.5
2.76
0.99
6
0.211
0.105
0.105
0.50
0.83
2.00
2.5
0.93
0.2
7
0.162
0.081
0.081
0.50
0.64
5.00
2.5
1.86
0.22
8
0.167
0.084
0.84
0.50
0.66
5.00
2.5
1.15
0.13
9
0.170
0.085
0.085
0.50
0.67
3.80
2.5
1.00
0.14
10
0.124
0.062
0.062
0.50
0.49
19.00
2.5
2.20
0.08
11
1.345
0.673
0.673
0.50
5.30
3.70
2.5
2.56
0.47
12
1.236
0.618
0.618
0.50
4.87
5.00
2.5
2.93
0.4
13
1.020
0.510
0.510
0.50
4.02
2.90
2.5
1.80
0.44
14
0.170
0.085
0.085
0.50
0.67
2.90
2.5
1.00
0.19
15
0.297
0.148
0.148
0.50
1.17
2.00
2.5
1.01
0.29
16
1.629
0.815
0.815
0.50
6.42
2.00
2.5
2.10
0.64
17
0.145
0.072
0.072
0.50
0.57
4.30
2.5
1.11
0.15
18
0.609
0.305
0.305
0.50
2.40
2.90
2.5
1.47
0.33
19
1.42
0.708
0.708
0.50
5.58
4.00
2.5
2.46
0.42
20
2.38
1.190
1.190
0.50
9.38
2.00
1 2.5
1.93
0.69
Form SW401-Low Density-Rev.3-2/10/09 Page 2of 4
Table 1 (Continued). Swale design information based on the 10-year storm.
Swale No.
Drainage
Area (ac)
Impervious
Area (ac)
Grassed
Area (ac)
C
Q
(cfs)
Slope
(0/0
V allow
(fps)
V actual
(fps)
Flow
Depth (ft)
21
4.193
2.096
2.096
0.5
16.52
2.00
2.5
2.59
0.83
22
0.896
0.448
0.448
0.5
3.53
2.00
2.5
1.35
0.43
23
0.393
0.197
0.197
0.5
1.55
2.00
2.5
1.00
0.29
24
1.354
0.677
0.677
0.5
5.33
2.00
2.5
1.83
0.52
IV. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 2II .1000, NCDENR BMP Manual (2007), Session Law 2006-246, and Session Law 2008-211.
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 that the following requirements
have been met and supporting documentation is provided as necessary. If the applicant has designated an agent
on the Stormwater Management Permit Application Form, the agent may initial below. If any item is not met,
then justification must be attached. Only complete items n through p for projects with curb outlets.
Page/Plan
Initials Sheet No.
N/fl N/A a. t For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer
is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative
buffer adjacent surface waters is provided.
_N 1A N/A b. t For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative buffer
is provided adjacent to surface waters. .
011}_ N/A c. t For Phase II Post -Construction projects: All built upon area is located at least 30 feet
landward of all perennial and intermittentsurface waters.
N R N/A d. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to the sale of any lots.
C12.10 e. Built upon area calculations are provided for the overall project and all lots.
C 12.10 f Project conforms to low density requirements within the ORW AEC. (if applicable per
15A NCAC 2H .1007)
C12.11 g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1 for curb outlet swales.
C12.11 h. Longitudinal slope of swales is no greater than 5%; for non -curb outlet projects, calculations
for shear stress and velocity are provided if slope is greater than 5%.
C 12.11 i. At a m nimum, swales are designed to carry the 10 year storm velocity at a non -erosive rate.
C12.11 j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non -
erosive velocity (for this flow requirement into wetlands, non -erosive is velocity < 2 ft/s).
C22.03 k. Swale detail and permanent vegetation is specified on the plans.
C22.03 1. Swale detail provided on plans; includes grass type(s) for permanent vegetative cover.
_ N/A m. Swales are located in recorded drainage easements.
C12.11 n.tt Length of swale or vegetated area is at least 100 feet for each curb outlet.
C12.11 o."The system takes into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each swale).
C12.11 p."Curb outlets direct flow to a swale or vegetated area.
t Projects in the Neuse, Tar -Pamlico, Catawba River basins, and Randleman Lake may require additional buffers.
ti Only complete these items for projects with curb outlets.
Form SW401-Low Density-Rev.3-2/10/09 Page 3 of 4
V. SWALE SYSTEM MAINTENANCE REQUIREMENTS
1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at
any time; and grass will not be mowed too close to the ground or "scalped".
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded following
sediment removal.
4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope.
5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six 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.
Print Name and Title:Ron Phillips Regional Vice President of Construction
Date:
Note: The Tegally responsible party slikulp not be a homeowners association unless more than 50%of the lots have been sold and
a resident of the subdivision has 4n named the president.
1, 11Q,Q• t U VIC. (A'_A.W y , a Notary Public for the State of ti" 1.O � County of
udke , do hereby cer ' y that POV1 r914 i LLi [D S personally appeared before me this
S day of 201 , and acknowledge the due execution of the forgoing swale maintenance
requirements. Witness my and Ad official seal,
Notary signature
SEAL
PNN MCCgG�''s
NOTA :•ktc1USLIC
Bps G.
Form SW401-Low Density-Rev.3-2/10/09
commission expires ✓ ^ I1 —P-O ` l+
Page 4 of 4
r=
r:
r c ,� i.
^;i, v
O t,
-9
w •� ���
Permit Number: 51 /M /6s
(to be provided by DWQ)
Drainage Area Number:
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will betaken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance 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:
Potentialproblems:
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
bioretention cell
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,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or 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.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rcv.3
Page 1 of
•L
BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
ulhes have formed.
Restabihze the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
Plants are dead, diseasedor
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
•
with new planting media.
Form SW401-Bioretmtion O&M-Rcv.3
Page 2 of 4
BMP element:
Potentialproblems:
How I will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop'inlet.
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-Bioretention O&M-Rev.3
Page 3 of
Permit Number:
be provided by UWQ)
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:Linden Oaks Phase 2G
BMP drainage area number:
Print name:Ron Phillips
Title:Re¢ional Vice President of Construction
Address:903 Armistead Street Fort Bragg NC 28307
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.
I, �&N ii l Y � n k A_ �e , a Notary Public for the State of
goA\k �c, rosy, County of Jcptee , do hereby certify that
Q nv\ kn.i QL r S personally appeared before me this
day of o I I , and acknowledge the due execution of the
forgoing bioreten ion maintenance requirements. Witness my hand and official seal,
`00Q\1A MCCq*
le
#...........
*A *YG
i PUBLIC i
.'r •'• g:4'lopi
SEAL
My commission expires o — I I " �014
Form SW40 I -Bioretention I&M-Rev. 2
Page 4 of 4
4•
hrti3f AC
m
Permit Number: (p/ /65-
(to be provided by DWQ)
Drainage Area Number: Z 4' 3
Infiltration Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
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:
Potential problem,
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 1 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
Quality 401 Oversight Unit at 919-
outlet.
733-1756.
Form SW401-Infiltration.Basin O&M-Rev.3
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:Linden Oaks Phase 2G
BMP drainage area number:
Print name:Ron Phillips
Title: Regional Vice President of Construction
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.
I, KQP 1 vt Y b C GixA 12 u , a Notary Public for the State of
l' oA t CC,, O u et , County of [40o _e do hereby certify that
R O%A TUA3 tD 6 personally appeared before me this
day of �l , and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
`a11. ?P\NMCC
gGI
NOTARY':t
s PUBLIC
SEAL
My commission expires A_ [I —DON
Form SW401-infiltration Basin O&M-Rev.3
vaViy ill
Page 3 of 3
N.
7 ii 7 A
k SU
e �•lili:)Ili{Ittt
Y
i
Permit Number:
(to be provided by OWO)
_
&
a\oF MTf9OG
y �
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items
Checklist (Part /I/) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
Linden Oaks Phase 2G
Contact name
John Kuzenski
Phone number
919-653-2990
Date
August4,2011
Drainage area number
1
II. DESIGN INFORMATION
Site Characteristics
Drainage area
164,484 ft2
Impervious area
42,963 rye
Percent impervious
26.1% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
N (Y or N)
1-yr, 24-hr runoff depth
in
1-yr, 24-hr intensity
in/hr
Pre -development 1-yr, 24-hr peak flow
ft3/sec
Post -development 1-yr, 24-hr peak flow
ft3/sec
Pre/Post 1-yr, 24-hr peak control
ft3/sec
Storage Volume: Non -SA Waters
Minimum volume required
3,908.3 ft3
Volume provided
5,827.5 ft3
Storage Volume: SA Waters
1.5'runoff volume
f13
Pre -development 1-yr, 24-hr runoff
Its
Post -development 1-yr, 24-hr runoff
It
Minimum volume required
0 0
Volume provided
ft3
Cell Dimensions
Fondling depth of water
12 inches
Ponding depth of water
1.00 It
Surface area of the top of the bioretention cell
6,281.0 h2
Length:
135 It
Width:
74 It
-or- Radius
ft
Media and Soils Summary
Drawdown time, ponded volume
6 hr
Drawdown time, to 24 inches below surface
12 hr
Drawdown time, total:
18 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
Soil permeability
2.00 in/hr
Soil composition
% Sand (by volume)
85%
• Fines (by volume)
10%
OK
KI
OK
OK
OK
OK
OK
ttllil
CA
"'�#01111x�iG��'' `d 14111
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3
% Organic (by volume) 5% OK
Total: 100%
Permit
(to be provided by DWO)
Phosphorus Index (P-Index) of media
15 (unitless) OK
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3
Permit Number:
` (m be provided by DWQ)
Basin Elevations
Temporary pool elevation
Type of bioretention cell (answer Y' to only one of the two following
questions):
Is this a grassed cell?
Is this a cell with trees/shrubs?
Planting elevation (top of the mulch or grass sod layer)
Depth of mulch
Bottom of the planting media soil
Planting media depth
Depth of washed sand below planting media soil
Are underdrains being installed?
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
SHWT elevation
Distance from bottom to SHWT
Internal Water Storage Zone (IWS)
Does the design include IWS
Elevation of the top of the upturned elbow
Separation of IWS and Surface
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP localed at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in the
future?
363.00 fmsl
Y (Y or N) OK
N (Y or N)
362 fmsl
0 inches Insufficient mulch depth, unless installing grassed cell.
360 fmsl
2 It
0 If
Y (Y or N)
2 Insufficient number of clean out pipes provided.
10 OK
1 if
359 fmsl
357 fmsl
2 ft OK
N (Y or N)
fmsl
362 ft
0
0
3 OK
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
>30 If
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N (Y or N) Insufficient ROW location.
5.61 ft/sec Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN) OK
Are the slopes draining to the bioretention cell greater than 20%? N (Y or N) OK
Is the drainage area permanently stabilized? Y (Y or N) OK
Pretreatment Used
(Indicate Type Used with an "X" in the shaded cell)
Gravel and grass
(6'inches gravel followed by 3-5 ft of grass)
Grassed swale #VALUE!
Forebay
Other Rip -Rap Apron
Form SW401-Bioretention-Rev.8
June 25, 2010
Pans I and It. Design Summary, Page 3 of 3
` Pamir No:
Vis t i-) -Ir I (to be assigned by DWO)
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.
17 -11
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),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
of drainage easement.
pBoundaries
2-01,17 Pl.
Flc
Plan details (1' = 30' or larger) for the bioretention cell showing:
7
- Cell dimensions
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
'
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
k
77 • '3 R
3. Section view of the bioretention cell (1' = 20' or larger) showing:
Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), k57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
M7.
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
-F 55-1`
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. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
:i
I P
P-index.
N
fJ
5. A detailed planting plan (1' = 20' or larger) prepared by a qualified individual showing:
sop oal.y - A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
A
0.J2 u'3'8.
A
A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
'f leW
i 1411—T7. The supporting calculations (including underdrain calculations, it applicable).
K I�
$J b" 1TtED
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
VJ I A
9. A copy of the deed restriction.
Form SW401-Bioretention-Rev.7 Pan III, Page t of 1
Permit No.
Ito be provided by DWD)
OA'p4 WATF;q
®�! STORMWATER MANAGEMENT PERMIT APPLICATION FORM WA o
NCDENR 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.
I. PROJECT INFORMATION
Project Name
Linden Oaks Phase 2G
Contact Person
John Kuzenski
Phone Number
919-653-2990
Date
8/4/2011
Drainage Area Number
2
II. DESIGN INFORMATION
Site Characteristics
Drainage area
129,747.00 ttz
Impervious area
45,408.00 ft2
Percent impervious
35.00 %
Design rainfall depth
1.00 in
Peak Flow Calculations
1-yr, 24-hr rainfall depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr discharge
Post -development 1-yr, 24-hr discharge
Pre/Post 1-yr, 24-hr peak flow control
Storage Volume: Non -SA Waters
Minimum design volume required
Design volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Minimum required volume
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 Surface Area
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom Surface Area
J.Ub
1n
0.13
n/hr
021
ff3/sec
0.00
ft'/sec
-0.21
ft'/sec
3,945.03 tt3
14,275.50 tt3
ft3
ft3
ft3
fl3
3
OK for non -SA waters
Fine to Medium Sand
10.00
in/m
342.00
fmsl
0.11
days OK
3.00
:1 OK
345.00
fmsl OK , 9
347.00
fmsl
5,178.00
ft'
348.00
fmsl
119.D0 ft
62.00 ft
3,582.00 ft'
Form SW401-Infiltration Basin-Rev.5 11Apr2011 Parts 1.811. Design Summary, Page 1 of 2
Permit
(to be provided by DWO)
Additional Information
Maximum runoff to each inlet to the basin?
0.21
ac-in
OK
Length of vegetative filter for overflow
NIA
It
OK
Distance to structure
N/A
ft
OK
Distance from surface waters
>30
I
OK
Distance from water supply well(s)
>100
if
OK
Separation from impervious soil layer
>6
ft
OK
Naturally occuring soil above shwl
3.00
if
OK
Bottom covered with 4-in of clean sand?
Y
(Y or N)
OK
Proposed drainage easement provided?
N
(Y or N)
Need a recorded drainage easement
Capures all runoff at ultimate build -out?
Y
(Y or N)
OK
Bypass provided for larger storms?
Y
(Y or N)
OK
Pretreatment device provided
Catch Basins
and Rip -Rap
Apron
Form SW401-Infiltration Basin-Rev.5 11Ap2011 Parts I. & II. Design Summary, Page 2 or 2
Permit
(to be provided by DWQ)
'BASIN #Z
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.
Page/ Plan
Initials Sheet No.
-°12 1 .lt•l1
r
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.
/) f t--'o t ZZ
=
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.
'Zt .03
3. Section view of the infiltration basin (V = 20' or larger) showing:
Pretreatment and treatment areas, and
Inlet and outlet structures.
o_ jC 5� RyA'Sn 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
AeteNor�C B
Set Lt M{0^' 5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
SJ 6f. TtFO 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.
0 Q °•°Z. ZZ'°3 6. A construction sequence that shows how the infittration basin will be protected from sediment until the
�— entire drainage area is stabilized.
. S WtO T 7. The supporting calculations.
Att>`No rx B
Seen V 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
N (� N P1 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.4 Page 1 of 1 Part III. Required Items Checklist, Page t of 1
Permit
(to be provided by DWO)
o2ap WArF, Q
all
�A
STORMWATER MANAGEMENT PERMIT APPLICATION FORM o
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.
I. PROJECT INFORMATION
Project Name Linden Oaks Phase 2G
Contact Person John Kuzenski
Phone Number 919.653-2990
Date 8/4/2011
Drainage Area Number 3
II. DESIGN INFORMATION
Site Characteristics
Drainage area
391,337.00
fts
Impervious area
123,104.00
ft'
Percent impervious
31.46
Design rainfall depth
1.00
in
Peak Flow Calculations
1-yr, 24-hr rainfall depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr discharge
Post -development 1-yr, 24-hr discharge
Pre/Post 1-yr, 24-hr peak flow control
Storage Volume: Non -SA Waters
Minimum design volume required
Design volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Minimum required volume
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 Surface Area
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom Surface Area
J.vu
0.13
0.61
0.00
-0.61
In
in/hr
12,019.00 ft3
23,997.00 h3
ft3
h3
ff3
n3
Fine to Medium Sand
11.00 in/hr
332.80 fmsl
0.09 days
3.00
:1
335.00
fmsl
336.50
fmsl
13,136.00
ryz
338.00
trust
193.00 it
91.00 If
10,184.00 f13
OK for non -SA waters
OK
OK
OK
Form SW401-Infiltration Basin-Rev.5 l lAp2011 Parts I. & II. Design Summary, Page 1 of 2
Permit No.
fire be provided by DWQ)
Additional Information
Maximum runoff to each inlet to the basin?
Length of vegetative filter for overflow
Distance to structure
Distance from sudace 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
4.70
ac-in
N/A
ft
N/A
ft
>30
ft
>100
ft
2.50
ft
2.17
ft
Y
(Y or N)
N
(Y or N)
Y
(Y or N)
Y
(Y or N)
Catch Basins
and Rio-Ra
Maximum of 2 acre -inches allowed
OK
OK
OK
OK
OK
OK
OK
Need a recorded drainage easement
OK
OK
Form SW401-Infiltration Basin-Rev.5 11 Ap2011 Pans I. B II. Design Summary, Page 2 of 2
Permit
(to be provided by OWQ)
RRsia 7#3
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.
12. 11 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.
12-0 1 22 ? 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.
Zt '� 3. Section view of the infiltration basin (1" = 20' or larger) showing:
Pretreatment and treatment areas, and
[L Inlet and outlet structures.
4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
A!lfNe19, 3
500 9-tP"75. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
s4 6" 1 rmb 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.
f o -oz 'L""3 6. A construction sequence that shows how the infitration basin will be protected from sediment until the
entire drainage area is stabilized.
sw it£ 1`0 7. The supporting calculations.
AvMs M-c s
jolm,`IrMb 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
a (IN 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.4 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1