HomeMy WebLinkAboutSW8060309_HISTORICAL FILE_20060501STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 O\j0300\
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 O pla o 60 k
YYYYMMDD
Michael Ir, Easley, Governor
\O��F W AT F9�G
May 1, 2006
.--_—William G. Ross Jr.,Sec. retary---
"'North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Mr. Carl Baker, Director -Design Branch
United States Marine Corps, Camp Lejuene
1005 Michael Road
Camp Lejuene, NC 28547
Subject: Stormwater Permit No. SW8 060309
Reserve Training & Vehicle Maintenance Facility
_ ___..-.-High Density -.Project-
Onslow County
Dear Mr Baker:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Reserve Training & Vehicle Maintenance Facility on April 26, 2006. 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. SW8 060309 dated May 1, 2006, for the construction of the subject
project.
This permit shall be effective from the date of issuance until May 1, 2016, 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 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.
If you have any questions, or need additional information concerning this matter, please
contact Robert Gordon, or me at (910) 796-7215.
Sincere'
�G112,
EQward Bveck
Regional Supervisor
Surface Water Protection Section
ENB/rdg: S:\WQS\STORMWAT\PERMIT\060309.may06
cc: Tim Clinkscales, PE, Paramounte Engineering
Robert Gordon
Wilmington Regional Office
Central Files
0.
Noah Carolina
A nlrrra//y
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone (910) 796-7215 Customer Service 1-877-623-6748
Wilmington Regional Office Wilmington, NC 28405 Fax (910) 350-2004 Intemec www ncwatemualityor� g
An Equal OpportunitylAf nnative Action Employer— 50% Recycledl10% Post Consumer Paper
State Stormwater Management Systems
Permit No. SWS 060309
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
United States Marine Corps, Camp Lejuene
Reserve Training & Vehicle Maintenance Facility
Rifle Range Road, Camp Lejuene - Onslow County
•C ■a
construction, operation and maintenance of 3 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 May 1, 2016, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. Infiltration #1 has
been designed to handle the runoff from 103,699 square feet of impervious area.
This basin must be operated with a 50' vegetated filter. Infiltration #2 has been
designed to handle the runoff from 58,415 square feet of impervious area.
Infiltration #3 has been designed to handle the runoff from 7,911 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans. There is no built -upon area for future
development in this permit.
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.
Page 2 of 7
State Stormwater Management Systems
Permit No. SW8 060309
The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
The following design criteria have been provided in the infiltration basins and
must be maintained at design condition:
1
Units5*
`sf. 0 1
�r , ..,Basrn,1
Basin,3
Drainage Area
Onsite
Offsite
Acres
4.75
4.75
0
2.21
2.21
0
0.43
0.43
0
Total Impervious Surfaces
ft2
103,699
58,415
7,911
Basin Depth
feet
1.89
2.22
1.95
Design Storm
inches
1.5
4.5
4.5
Bottom Elevation
FMSL
52.5
53.45
52.5
Permitted Surface Area
Bottom
ft2
4,775
7,600
855
Permitted Storage Volume
ft3
12,956
55.67
3,046
Storage/Bypass Elevation
FMSL
54.39
55.67
54.45
Expected Infiltration Rate
in/hr
1.5
1.5
1.5
Time to Draw Down
days
0.95
0.95
1.19
Type of Soil
Baymeade
Receiving Stream
Stones Creek
River Basin
White Oak
Stream Index Number
r_:' , .fz
19-30-3
Classification of Water Body
"SA;HQW"
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.
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
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.
Page 3 of 7
State Stormwater Management Systems
Permit No. SW8 060309
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:
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 for a minimum of ten years from the date of the completion of
construction.
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.
Page 4 of 7
State Stormwater Management Systems
Permit No. SW8 060309
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
Sediment Control Planning and Design Manual.
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 any name, ownership or mailing address
changes within 30 days.
Permit issued this the 1s' day of May, 2006.
NOR ,l t`6AROLINA. NVIRONMENTAL MANAGEMENT COMMISSION
irlL.(t
fo�an Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7
State Stormwater Management Systems
Permit No. SW8 060309
Reserve Training & Vehicle Maintenance Facility
Stormwater Permit No. SW8 060309
Onslow 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 6 of 7
State Stormwater Management Systems
Permit No. SW8 060309
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
Page 7 of 7
OFFICE USE ONLYi; 1:
fit. - —=-zw,
1
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION:
1. Applicant's name (specify the name of the corporation, individual, etc. who owns the project):
Camp LeJeune, Reserve Training Facility & Vehicle Maintenance Facility
2. Print Owners/Signing Official's name and title (the person legally responsible for facility and compliance):
United States Marine Corps; Carl Baker, Director Des4m Branch
3. Mailing Address for person listed in item 2 above:
1005 Michael Road
City: Camp LeJeune State:
Telephone Number: 910-451-2213
NC
Zip: 28547-2521
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Reserve Trainin4 Facility & Vehicle Maintenance Facility
5. Location of Project (street address):
Off Rifle Range Road Inside Camp LeJeune
City: Camp LeJeune County: Onslow
6. Directions to project (from nearest major intersection):
1.8 miles from the intersection of US Hwy 17 and NC 210, take left on Rifle Range road, +/- 1 mile on left,
just before existing parking lot
7. Latitude: 034°35' 16"N
Longitude: 077°27' 00"W
S. Contact person who can answer questions about the project:
Name: Tim Clinkscales PE
IL PERMIT INFORMATION:
1. Specify whether project is (check one):
X New
Telephone Number:
Renewal
of project
791-6707
Modification
Form: SWU-101 Version3.99 Page I of
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 X High Density _Redevelop _General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sediment/Erosion Control 404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center
at 1-877-623-6748.
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.
The stormwater will be treated with the construction of 3 infiltration basins
2. Stormwater runoff from this project drains to the
3. Total Project Area: 7.4 Acres
5. How many drainage areas does the project have?
White Oak River basin.
4. Project Built Upon Area: 52.6 %
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
Droiect, attach an additional sheet with the information for each area nrovided in the same format as below.
Ba'sinAtilormiahon `�� ' ", ` 3
' "'DFamage '
Area Total,
_,` DA:#l,
"'DA#2.'1
DA"#3
Receiving Stream Name
Stones Creek
Stones Creek
Stones Creek
Stones Creek
Receiving Stream Class
SA;I-IQW
SA;HQW
SA;HQW
SA;HQW
Drainage Area
7.4 acres
4.75
2.21
0.43
Existing Impervious* Area
N/A
N/A
N/A
N/A
Proposed Impervious* Area
3.90 acres
2.38
1.34
1 0.18
% Impervious* Area (total)
52.6
50.1
60.6
1 41.9
Impervious* Surface :Area
� Drainage-
Basin Total-'.
DA #,1.
DA #2 . , �
DA #3 = ,
On -site Buildings
31,011 sf
31,011
0
0
On -site Asphalt
7911 sf
0
0
7,911
On -site Parking
127,142 sf
69,836
57,306
0
On -site Sidewalks
3,961 sf
2,852
1,109
0
Other on -site
0 sf
0
0
0
Off site
0 sf
0
0
0
Total:
170,025 sf
103,699
58,415
7,911
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads,
parking areas, sidewalks, gravel areas, etc.
7. How was the off -site impervious area listed derived?
N/A
Form: SWU-101 Version 3.99 Page 2 of
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, out parcels and future development prior to 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.
I. The following covenants are intended to ensure ongoing compliance with state management permit
number as issued by the Division of Water Quality. These
covenants my not be changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or impervious
materials. Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar
material but do not include wood decking or the water surface ofswimming pools.
3. Swalcs shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit
modification prior to construction.
5. All permitted runofffrom out parcels or future development shall be directed into the permitted
stormwater control system. These connections to the stormwater control system shall be performed
in a manner that maintains the integrity and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable item required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form (s) listed below must be submitted for
each BMP specified for this project. Contact the Stormwater and General Permits Unit at (919) 733-5083 for
the status and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin SupplementForm SWU-109 Innovative Best Management Practice
Supplement
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 Regional Office.
Form: SWU-101 Version 3.99 Page 3 of
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management:
• Two copies of plans and specifications, 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
Initials
ICC'
..cc
'� GC
- 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)
VI. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section:
Designated agent (individual or firm): Paramounte Engineering, Inc
Mailing Address: 127 Raccine Drive, Suite 202
City: Wilmington State: NC Zip: 28403
Phone: (910)791-6707 Fax: (910)763-4517
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General information, item 2) Carl Baker
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covena ill be record and that the proposed project complies with the requirements of
15A NCAC 2H.1000 V A
Signature:
Date:
Form: SWU-101 Version 3.99 Page 4 of
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
INFILTRATION BASIN SUPPLEMENT
This form maybe photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing
all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: Reserve Training Facility & Vehicle Maintenance Facility
Contact Person: Tim Clinkscales, PE Phone Number: (910) 520-1991
This worksheet applies to: Basin No. 1 in Drainage Area 1
(as identified on plans) Porn Form .SWU-101)
II. DESIGN INFORMATION — Attach supporting calculations / documentation. The soils report must be based upon an
actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean seal level (fmsl).
Soils Report Summary
Soil Type Baymeade
Infiltration Rate 1.5 in/hr or cUhr/sf (circle appropriate units)
SHWT Elevation 50 fmsl (Seasonal High Water Table elevation)
Design Storm 1.5 inch (1.5 inch event for SA waters, I inch event for others)
Design Volume 12,956 c.f.
Drawdown Time 0.95 Days
Basin Dimensions
Basin Size ft. x
Basin Volume Provided 13,586 c.f.
Basin Elevations
Bottom Elevation 52.5 fmsl
Storage Elevation 54.39 fmsl
Top Elevation 54.5 fmsl
ft. = 4775 sq. ft. (bottom dimensions)
Form SWU-103 Rev 3.99 Page 1 of 3
,F
III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
-P "- a.
System is located 50 feet from class SA waters and 30 feet from other surface waters.
�ZC b.
System is located at least 100 feet from water supply wells.
T6C c.
Bottom of system is at least 2 feet above the seasonal high water table.
d.
Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e.
System is not sited on or in fill material or DWQ approval has been obtained.
TGC f.
System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
-PC g. Drainage area for the device is less than 5 acres.
-rC h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
jGe i. System captures and infiltrates the runoff from the first 1.0 inches of rainfall (1.5 inch event for
areas draining to SA waters). Design volume and infiltration calculations attached.
J•
�C
TcC k.
1.
T�
M.
UGC
n.
TGC o.
UGC p.
?�C q•
r.
System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage. Calculations attached.
All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V)
A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment
trap is provided.
Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
dense vegetative cover is provided.
Vegetated filter is provided for overflow and detail is shown on plans (required minimum length
is 50 feet for SA waters, 30 feet for other waters).
Flow distribution mechanism within the basin is provided.
A benchmark is provided to determine the sediment accumulation in the pretreatment device.
Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions with five days. A soils report and all pertinent draw -down
calculations are attached.
-r&G s. Plans ensure that the installed system will meet design specifications (constructed or restored)
upon initial operation once the project is complete and the entire drainage area is stabilized.
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash
accumulation, vegetative cover, and general condition.
Form SWU-103 Rev 3.99 Page 2 of 3
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated
cover to maintain a maximum height of six inches, and remove trash as needed.
After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the
pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original
design depth without over -excavating. Over -excavating may cause the required water shall be separation to be
reduced and may comprise the ability of the system to perform as designed. Removed sediment shall be disposed
of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original design
depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 53.0 feet in the pretreatment unit, the sediment shall be removed
from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original design
specifications. If the system cannot be repaired to perform its design function, other stormwater control devices
as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for performance of the five 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: Carl Baker, Director Design Brance
Address: 1005 Michael Road, Camp LeJeune, NC 28547-2521
Phone:
Signature:
Date: V—z —�6
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/>rary Public or the State of Ado >_f t & kvt A_�s County of
OJ 5 j L t, do here y certify that , personally appeared before me this
Yam/ day of e01006 , and acknowledge the due execution of the forgoing infiltration
basin maintenance requirements. Witness my hand and official seal'',//�
SEAL My commission expires
Form SWU-103 Rev 3.99 Page 3 of 3
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
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as au original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing
all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: Reserve Training Facility & Vehicle Maintenance Facility
Contact Person: Tim Clinkscales, PE Phone Number: (910) 520-1991
This worksheet applies to: Basin No. 1 in Drainage Area 2
(as identified on plans) (from Form SWU-101)
II. DESIGN INFORMATION — Attach supporting calculations / documentation. The soils report must be based upon an
actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean seal level (fmsl).
Soils Report Summary
Soil Type Baymeade
Infiltration Rate 1.5 in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation 51.0 fmsl (Seasonal High Water Table elevation)
Design Storm 4.5 inch (1.5 inch event for SA waters, 1 inch event for others)
Design Volume 21,238 c.f.
Drawdown Time 0.95 Days
Basin Dimensions
Basin Size ft. x ft. = 7,600 sq. ft. (bottom dimensions)
Basin Volume Provided 21,612 c.f.
Basin Elevations
Bottom Elevation 53.45 fmsl
Storage Elevation 55.67 fmsl
Top Elevation 55.7 fmsl
Form SWU-103 Rev 3.99 Page 1 of 3
111. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
4?G C a.
System is located 50 feet from class SA waters and 30 feet from other surface waters.
C b.
System is located at least 100 feet from water supply wells.
c.
Bottom of system is at least 2 feet above the seasonal high water table.
�c d.
Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained.
f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
7ZC g. Drainage area for the device is less than 5 acres.
h. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
nC attached.
i. System captures and infiltrates the runoff from the first 1.0 inches of rainfall (1.5 inch event for
�G areas draining to SA waters). Design volume and infiltration calculations attached.
j. System is sized to take into account the runoff at the ultimate built -out potential from all
jL C surfaces draining to the system, including any off -site drainage. Calculations attached.
roc k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (H:V)
1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or sediment
T(Z- trap is provided.
m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches or
7Ze dense vegetative cover is provided.
n. Vegetated filter is provided for overflow and detail is shown on plans (required minimum length
7- is 50 feet for SA waters, 30 feet for other waters).
t 6 e o. Flow distribution mechanism within the basin is provided.
rt6 C- p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
-7&'C q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
r. System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions with five days. A soils report and all pertinent draw -down
rGC calculations are attached.
s. Plans ensure that the installed system will meet design specifications (constructed or restored)
upon initial operation once the project is complete and the entire drainage area is stabilized.
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash
accumulation, vegetative cover, and general condition.
Form SWU-103 Rev 3.99 Page 2 of 3
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated
cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the
pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original
design depth without over -excavating. Over -excavating may cause the required water shall be separation to be
reduced and may comprise the ability of the system to perform as designed. Removed sediment shall be disposed
of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original design
depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 54.0 feet in the pretreatment unit, the sediment shall be removed
from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original design
specifications. If the system cannot be repaired to perform its design function, other stormwater control devices
as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for performance of the five 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: Carl Baker, Director Design Branch
Address: 1005 Micheal Road, Camp LeJeune, NC 28547-2521
Phone:
Signature:
Date: 7 " 7 — Q !o
Note: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
1, �tAZe /ZUJ , a NotaryPublic for they"State of AOrl_fh K&.o I.. ss County of
C Yl 5 if) , do hereby certify that _ �u �,rLa- personally appeared before me this
q— day of 40 4. i , a U6 S , and acknowledge the due execution of the forgoing infiltration
basin maintenance requirements. Witness my hand and official seal,
SEAL My commission expires A714 r1�0'0
y
t I ,-
Form SW U-103 Rev 3.99 Page 3 of 3
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
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications showing
all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name: Reserve Training Facility & Vehicle Maintenance Facility
Contact Person: Tim Clinkscales, PE Phone Number: (910) 520-1991
This worksheet applies to: Basin No. 1 in Drainage Area 3
(as identified on plans) (from Form SWU-101)
II. DESIGN INFORMATION — Attach supporting calculations / documentation. The soils report must be based upon an
actual field investigation and soil borings. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean seal level (fmsl).
Soils Report Summary
Soil Type Baymeade
Infiltration Rate 1.5 in/hr or cf/hr/sf (circle appropriate units)
SHWT Elevation 50.0 frisl (Seasonal High Water Table elevation)
Design Storm 4.5 inch (1.5 inch event for SA waters, 1 inch event for others)
Design Volume 2,997 c.f.
Drawdown Time 1.19 Days
Basin Dimensions
Basin Size ft. x ft. = 855 sq. ft. (bottom dimensions)
Basin Volume Provided 3046 c.f.
Basin Elevations
Bottom Elevation 52.5 fmsl
Storage Elevation 54.45 fmsl
Top Elevation 54.5 fmsl
Form SWU-103 Rev 3.99 Page 1 of 3
III. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
b. System is located at least 100 feet from water supply wells.
-rGL c. Bottom of system is at least 2 feet above the seasonal high water table.
TGL d. Bottom of the system is 3 feet above any bedrock or impervious soil horizon.
GG e.
'GL
�G
—16c
System is not sited on or in fill material or DWQ approval has been obtained.
Drainage area for the device is less than 5 acres.
i. System captures and infiltrates the runoff from the first 1.0 inches of rainfall (1.5 inch event for
T6G ched.
ial from all
areas draining to SA waters). Design volume and infiltration calculations atta
j. System is sized to take into account the runoff at the ultimate built -out potent
surfaces draining to the system, including any off -site drainage. Calculations attached.
wale or sediment
-rGL k. All side slopes stabilized with vegetated cover are no steeper than 3:1 (I-I:V)
1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed S
76G
h of 4 inches or
trap is provided.
in. Bottom of the device is covered with a layer of clean sand to an average dept
dense vegetative cover is provided.
n. Vegetated filter is provided for overflow and detail is shown on plans (required minimum length
�C is 50 feet for SA waters, 30 feet for other waters).
'rGC o. Flow distribution mechanism within the basin is provided.
2C p. A benchmark is provided to determine the sediment accumulation in the pretreatment device.
�Z < q. Runoff in excess of the design volume bypasses off-line systems (bypass detail provided).
r. System is designed to draw down the design storage volume to the proposed bottom elevation
under seasonal high water conditions with five days. A soils report and all pertinent draw -down
—rGC calculations are attached.
s. Plans ensure that the installed system will meet design specifications (constructed or restored)
a is stabilized.
C' upon initial operation once the project is complete and the entire drainage are
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly inspect the infiltration system for erosion, trash
accumulation, vegetative cover, and general condition.
Form SW U-103 Rev 3.99 Page 2 of 3
. . .
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow vegetated
cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the. structure to approved design
specifications.
4. Remove accumulated sediment from the pretreatment system and infiltration basin annually or when depth in the
pretreatment unit is reduced to 75% of the original design depth. The system shall be restored to the original
design depth without over -excavating. Over -excavating may cause the required water shall be separation to be
reduced and may comprise the ability of the system to perform as designed. Removed sediment shall be disposed
of in an appropriate manner and shall not be handled in a manner that will adversely impact water quality (i.e.
stockpiling near a stormwater treatment device or stream, etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original design
depth so that accurate sediment accumulation readings can be taken. The measuring device used to
determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 53.0 feet in the pretreatment unit, the sediment shall be removed
from both the pretreatment unit and the infiltration basin.
5. If the Division determines that the system is failing, the system will immediately be repaired to original design
specifications. If the system cannot be repaired to perform its design function, other stormwater control devices
as allowed by NCAC 2H .1000 must be designed, approved and constructed.
I acknowledge and agree by my signature below that I am responsible for performance of the five 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: Carl Baker. Director Desien Branch
Address: 1005 Michael Road, Camp LeJeune, NC 28547-2521
Phone:
Signatu
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 r the State of /�/ Gd , County of
do hereby certify that 96v4/ personally appeared before me this
day of , -,2406 , and acknowledge the due execution of the forgoing infiltration
basin maintenance requirements. Witness my hand and official seal,
SEAL My commission expires ,5CP aim aeao
Form SWU-103 Rev 3.99 Page 3 of 3
State Stormwater Management Systems
Permit No. SW8 060309
Reserve Training & Vehicle Maintenance Facility
Stormwater Permit No. SW8 060309
Onslow Court
Designers CartMeation
I.., as a duly registered
in the State of North Carolina, having been authorized to observe (periodically)
full time) the construction of the project,
!9
for V S KWfA/L- LWS (Project Owner) hereby state that, to the
best of my abilities, due pre and diligence was used In the observation of the project
construction such that the construction was observed to be bulk within substantial
compliance and intent of the approved plans and specifications.
The checMist of items on page 2 of this form is Included in the Certification.
Noted deviations from approved plans and spedfication:
Fliiy.r{r.n..,r +�'3 w.IIs, licM•'�rJr �'�" G<%�tf il�i„y
// Nc. GJ'�'' Cwtk- NrRQrir1+�+Nr�•'G'.�lr C.wA✓.�r�r...
t.� fa i f• Lu
l7✓•*..,�i,foeN .� l;fiw*3 'fix /I�rrrviw> S C1l7�;,`,
P�� VSL
':,
Signature - _ 31185
Registrati Number 3li �� y ..,or �P•'`y:;
Date 73 /tf 2 2w s � g�Aa.
f l AUG 102022
Page 8 of 7 BY.-
�.'
State Stormwater Management Systems
Permit No. SW8 060309
Certification Requirements:
"0 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
pi 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.
V�" The bypass structure weir elevation Is per the approved plan.
+mow mow6. The bypass structure is located per the approved plans.
tr�nw"" 7. A Trash Rack is provided on the bypass structure. N+r r- hwi+
8. All slopes are grassed with permanent vegetation.
Vegetated slopes are no steeper than 3:1.
10. The Inlets are located per the approved plans and do not cause short-
arculting of the system.
b1. The permitted amounts of surface area and/or volume have been
/ provided.
1nY�JZ All required design depths are provided.
All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Page 7 or 7 AVG 10 20V r
fly.--_
1 2 7 R A C IN E DR IV E, S U I T E 2 0 2
W I L NI I N G T O N, N C 2 8 4 0 3
9 1 0- 7 9 1- 6 7 0 7( O ) 9 1 0- 7 6 3- 4 5 1 7 ( F)
L E T T E R O F T R A N S M I T T A 1.
gi$1'To
";
NCE)ENR
IDatej{i!
4/26/06
nRe`'El.i Reserve Training Facility
Rob Gordon
y 91,
Pm ecr.No,.:rx
06103.PEI
❑ Originals ® Prints ❑ Shop Drawings ® Calculations
M46116 iii"':i&irr6:1 ❑ Correspondence ® Plans ❑ Specifications ❑ Other as listed below
'�;Qyannty,,���,liili�
I II t
Date,�i� uI
R A x
pi { Dwg.lj�To ,�
., q IIU V�7 (. �'i� N' i r tl t ii•i a"-n �qin tl U tl'I II -iliR v It it
�nil�w6stllyii6li� � (9}rvlllVeJi 3�h�U��ii , {,ft'� Descnprion iiil.lillb�wL�y�1Wi'. (� I'piln�iu:��li� �,.P:+Irilt.
2
4/6/06
G001,
CS101,CG101,
CG 501
Plans for Stormwater
1
4/6/06
Updated Calculations (Signed)
1
Response Letter
Iss'iie'Statis: ® For Approval ❑ As Requested ❑ Construction ❑ Bid
❑ For Your Use ❑ For Review and Continent ❑ Approved as Noted ❑ See Remarks
❑ No Exceptions Taken ❑ Make Corrections Noted ❑ Amend & Resubmit
❑ Rejected - See Remarks ❑ Approved as Submitted ❑ Other
Rema'iks.
W)"I11i U""
5tgIned-r!ii . 1 4
Tim Clinkscales,PE
7AP
CEYR 2 6 2006
-ARAMOUNTF
E, N a I N E E R I N ❑, I N. C
April 20, 2006
Robert Gordon
NCDENR Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
RE: Stormwater Project No. SW 8 060309
Reserve Training & Vehicle Maintenance Facility
Onslow County
Dear Mr. Gordon:
Thank you for your comment letter dated April 18, 2006 regarding the above -mentioned
project. Your comments (in bold) are provided below followed by our responses (in
italic):
1. Please provide a little more detail on the vegetated filter (width, slope, level
spreader, etc).
A width of 10 feet was added to sheet CG501, the slope was added to CG101 (2%).
2. Please provide the swale spot elevations on basin #1 as indicated.
• These spot elevations were added to sheet CGI01.
I trust that our responses have satisfactorily addressed your comments. Please feel free
to contact me should you have further questions after reviewing our responses and the
enclosed materials. Thank you for your assistance with this project.
Tim Clinkscales,PE
1 2? RACINE ❑ R I V E, 6❑ I T E 2❑ 2. W I L M I N B T❑ N, N C 2 B 40 3
P H: 1 9 1❑) 7 9 1- 6 90 7 F A X: 1 9 1 ❑) 9 6 3- 4 5 1 9
* * * COMMUNICATION RESULT REPORT ( APR.18.2006 7:49AM ) * * *
P. 1
FILE MODE
088 MEMORY TX
OPTION
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
ADDRESS (GROUP)
97634517
TTI NCDENR WIRO
UL—Tll PAGE
K i P. 1/1
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
FAX COVER SHEET
Date: April 18, 2006 No. of Pages: 3
To: Tim Clinkscales, PE From: Robert Cordon
Express permitting sect lon
Company: Paramounte Engineering FAX # 910-350-2004
FAX #: 763-4517 Phone # 910-796-7303
DWO Stormwater Project Number: SW8 060309
Project Name: Camp Lejuene Reserve, Training Facility
MESSAGE:
There are just a few items I need to issue the Reserve Training Facility Permit.
■ Please provide a little more detail on the vegetated filter (width, slope,
level spreader etc... )
• Please provide the swale spot elevations on basin #1 as indicated (might
have been a plot issue — there were callouts, but no elevations on the
drawings)
■ Please PE stamp the updated calculations.
■ Please provide 2 copies of any modified sheets (I need the 2"d copy of any
sheets that do not change as a result of this modification and 2 more
FAX COVER SHEET
Date: April 18, 2006 No. of Pages: 3
To: Tim Clinkscales, PE From: Robert Gordon
Express permitting sect Cogn
Company: Paramounte Engineering FAX # 910-350-2004
FAX #: 763-4517 Phone # 910-796-7303
DWQ Stormwater Project Number: SW8 060309
Project Name: Camp Lejuene Reserve Training Facility
MESSAGE:
There are just a few items I need to issue the Reserve Training Facility Permit.
• Please provide a little more detail on the vegetated filter (width, slope,
level spreader etc...)
• Please provide the swale spot elevations on basin #1 as indicated (might
have been a plot issue — there were callouts, but no elevations on the
drawings)
• Please PE stamp the updated calculations.
• Please provide 2 copies of any modified sheets (I need the 2nd copy of any
sheets that do not change as a result of this modification and 2 more
copies of any sheets that do change).
Please call if you have any questions. Thanks!
_ &Ri
O � .
Ems., N G I N E E R I N 6, 1111 N.•,,j a
1 2 7 R A C I N E D R I V E S U I T E 2 0 2
W I L M I N G T O N, N C 2 8 4 0 3
9 1 0- 7 9 1- 6 7 0 7( O) 9 1 0- 7 6 3- 4 5 1 7 ( F)
L E T T E R O F T R A N S M I T T A L
�To:':.
NCDENR
Date''
4/6/06
Re: i
Reserve Training Facility
Attni
Rob Gordon
Project No.', J
06103.PEI
e are'sendin
❑ Originals
® Prints
❑ Shop Drawings
® Calculations
❑ Correspondence
® Plans
❑ Specifications
❑ Other as listed below
he following items
.: uann
Q tY `�
,.' ' Date'!
D`'w No.:.
g•
_. '. ,.': ' Descri- tlon
t � p
1
4/6/06
G001,
CS101,CG101,
CG 501
Plans for Erosion Control Review
1
3/8/06
Stormwater Permits (SW101,SW103 (3))
ssueStatus: ® For Approval ❑ As Requested ❑ Construction ❑ Bid
❑ For Your Use ❑ For Review and Comment ❑ Approved as Noted ❑ See Remarks
etion Taken: ❑ No Exceptions Taken ❑ Make Corrections Noted ❑ Amend & Resubmit
❑ Rejected - See Remarks ❑ Approved as Submitted ❑ Other
Remarks.
CcLSigned: (�
Tim Clinkscales,PE
APR 0 7 2006
I
_P A
Oar-
T
-AR, M
E, N G I N E E R 1 N G, I N. C
March 15, 2006
Robert Gordon
NCDENR Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
RE: Stormwater Project No. SW 8 060309
Reserve Training & Vehicle Maintenance Facility
Onslow County
Dear Mr. Gordon:
Thank you for your comment letter dated March 15, 2006 regarding the above -
mentioned project. Your comments (in bold) are provided below followed by our
responses (in italic):
1. Please sign the application and all supplements (provide original signatures).
Please indicate the title of the applicant on the application.
The original signature permits are submitted
2. The soils report gives a range of the infiltration rate (1.5-2). Please use the
conservative end of that range
• The numbers in the supplement will reflect this change
3. The SHWT listed on the supplement for basin 3 appears incorrect
• This value in the supplement has been changed to 50.0 which is 5.5 below the existing
grade in the area around basin I.
4. Please provide a detail of the vegetated filter
• This is provided on sheet CG501
5. Please provide a vicinity map on the drawings
• This will be added to the survey drawing
6. Please provide a few spot elevations on the west entrance of basin 1. The contours
do not clearly show that runoff will enter the basin before bypassing
• Spot elevations have been added for clarity to show runoff to be conveyed into the
infiltration basin.
7. The line weights used, make it difficult to distinguish between contour lines,
pavement boundaries, dimension lines, etc. (especially on the West side of the
project where there is no curb.) Please clarify.
This lines in the west side of the parking area have been changed to make it easier to
distiguish.
1 2 7 R A C I N E D R I V E S ll 1 T E 20 2 W I L M 1 N G T❑ N, N C 2 B 40 3
P H: ( 9 1 0 1 7 9 1- 6 7❑ 7 F A X: l 9 1❑ I 9 5 3- 4 5 1 V
S. It appears the 7,911 sf listed on the application for DA#3 is incorrectly listed as
sidewalk.
• This area has been placed in the asphalt area in the permit
9. Please add a note to the drawing indicating there are no wetlands present on site.
There is a note in the narrative.
• This note has been placed on the survey drawing
10. Please provide a few more dimensions to the proposed BUA (sidewalks, typical
radii, etc.)
• Extra dimensions have been added to the drawing, It is shown on the grading plan
11. Please show the SHWT on each basin cross section
• This is updated in the details for the infiltration basins
12. Please provide a map showing where the soil boring(s) were taken, both by
Terracon & Vincent Lewis.
• This is shown on the grading sheet. Vincent took samples at the two locations along
with his knowledge of the rate of the existing parking lot on the north side of the site.
Based on this, he deemed it not necessary to perform the third one. Both of his test
agreed with the results given by Terracon and the previous permitted project.
13. The total BUA listed on the supplement on the application for DA#2 does not
equal the sum of the figures listed for parking, sidewalks, etc.
• This has been updated on the Stormwater Supplement.
14. Please include a Camp Lejuene project or "p" number, if one exists for the project.
• N64270-05-C-5021
I trust that our responses have satisfactorily addressed your comments. Please feel free
to contact me should you have further questions after reviewing our responses and the
enclosed materials. Thank you for your assistance with this project.
Tim Clinkscales,PE
1 2 9 R A C I N E D R I V E. S U I T E 2 C 2. W I L M I N G T C N, N C 2 8 4 G 3
P H: (9 1 G) 7 9 1- 6 7 0 7 F A X: (9 1 O) 9 6 3- 4 5 1 9
P. 1
* * COMMUNICATION RESULT REPORT ( L.15.2006 9:03AM )
TTI NCDENR WIRO
FILE MODE OPTION --- --- - ADDRESS -(GROUP) -- ---RPRGE--
// --
458 MEMORY TX 97634517 -- OK ) ----- P. 3i3
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
FAX COVER SHEET
No. of Pages: 3
Date: March 15, 2006 From: Robert Gordon
To: Tim Clinkscales, PE
Express permitting section
Company: Paramounte Engineering FAX # 910-350-2004
FAX #: 763.4517 Phone # 910-796-7303
DWQ Stormwater Project Number: SWS 060309
Project Name: Reserve Training & Vehicle Maintenance Facilities
MESSAGE:
Attached is the request for additional information the Reserve Training & Vehicle
will)ntenance Facilities.
also be ma ledto you h Please callif
ll be mailel if you have any questions.and a copy
FAX COVER SHEET
Date: March 15, 2006 No. of Pages: 3
To: Tim Clinkscales, PE From: Robert Gordon
Express permitting section
Company: Paramounte Engineering FAX # 910-350-2004
FAX #: 763-4517 Phone # 910-796-7303
DWQ Stormwater Project Number: SW8 060309
Project Name: Reserve Training & Vehicle Maintenance Facilities
MESSAGE:
Attached is the request for additional information the Reserve Training & Vehicle
Maintenance Facilities. The original will be mailed to the applicant and a copy
will also be mailed to you. Please call if you have any questions.
Michael 17. Easley, Governor
William G, Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
O
March 15, 2006
David Washburn
United States Marine Corps
1005 Michael Road
Camp Lejuene, NC 28547
Subject: Request for Additional Information
Stormwater Project No. SW8 060309
Reserve Training & Vehicle Maintenance Facilities
Onslow County
Dear Mr. Washburn:
Alan W. Klimek, P.E. Director
Division of Wafer Quality
The Wilmington Regional Office received a Stormwater Management Permit Application for
Reserve Training & Vehicle Maintenance Facilities on March 8, 2006. A preliminary review of
that information has determined that the application is not complete. The following information
is needed to continue the stormwater review.
1. Please sign the application and all suppl is (provide original signatures). Please
indicate the title of the applicant on the application.
2. The soils report gives a range of the infiltration rate (1 — 2). Please use the
conservative end of that range (1.5). `
3. The SHWT listed on the supplement f�basin 3 appears incorrect.
4. Please provide a detail of the vegetated filter. V
5. Please include a vicinity map on the drawings v/�
6. Please provide a few spot elevations on the west entrance of b� in 1. The contours do
not clearly show that runoff will enter the basin before bY`Passifig�
7. The line weights used make it diffict {to distinguish. between contour lines, pavement
boundaries, dimension lines etc. (epecially on the West side of the project where there
is.no curb. Please clarify.
8. It appears the 7,911 sf listed onLtb/application for DA#3 is incorrectly listed as
sidewalk.
9. Please add a note to the drawings indict/nathere are no wetlands present on site.
There is a note in the narrative.
10. Please provide a few more dimensionsvt the proposed BUA (sidewalks, typical radii
etc)
11. Please show the SHWT on each basin x-section.
"r
NoorthCarolina
11Vrrturally
North Carolina Division of Water Qmdity 127 Cardinal Drive Extension Phone (910) 796-7215 Customer Service 1-877-623-6748
Wilmington Regional Office Wilmington, NC 29405 Fax (910)350-2004 Internet www. ncwalerqualitv,og
An Equal OpportuntlylAffirmative Action Employer— 50 % Recycled110% Post Consumer Paper
Reserve Training &Vehicle Maintenance Facility
March 15, 2006
Stormwater Permit # SW8 060309
12. Please provide a map showing where the soil boring(s) were taken, both by Terracon &
Vincent Lewis.
13. The total BUA listed on the application for DA #2 does not equal the sum of the figures
listed for parking, sidewalks etc.
14. Please include a Camp Lejuene project or "p" number, if one exists for the project.
Please note that this request for additional information is in response to a preliminary review.
The requested information should be received by this Office prior to March 27, 2006, or the
application will be returned as incomplete. The return of a project will necessitate resubmittal of
all required items, including the application fee.
If you need additional time to submit the information, please mail or fax your request for a time
extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the date by which you expect to submit the required information.
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject
to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any original
documents that need to be revised have been sent to the engineer or agent. All original
documents must be returned or new originals must be provided. Copies are not acceptable. If
you have any questions concerning this matter please feel free to call me at (910) 796-7303,
Sincerely,
J `6-0
Robert D. Gordon
Environmental Engineer II
ENB/RDG: S:\WQS\STORMWATER\ADDINFO\2006\060309Mar15
cc: Tim Clinkscales, PE, Paramounte Engineering
Robert D. Gordon
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3/14/2006
PARIAMO
E: N G 1 N E E R I N G, I N. C
1 2 7 R A C I N E D R I V E S U I T E 2 0 2
W I L M I N G T O N, N C 2 8 4 0 3
9 1 0- 7 9 1- 6 7 0 7( 0) 9 1 0- 7 6 3- 4 5 1 7 ( F)
L E T T E R O F T R A N S M I T T A L
To:.
NCDENR
Date
3/9/06
Re:
Reserve Training Facility
'A":.'
Cameron Weaver
Project No.
I 06103.PEI
e. are sendin
❑ Originals
® Prints
❑
Shop Drawings
® Calculations
❑ Correspondence
® Plans
❑
Specifications
❑ Other as listed below
he following g items.
Quantity:
Date,
Dwg. No.
Description
3
3/8/06
G001,
CG101,CG102,
CG103, CG
501
flans for Erosion Control Review
3
3/8/06
Erosion Control Narrative
1
3/8/06
Financial Responsibility Form
2
3/8/06
G001,
CG101CG102,
CC, 16, CC,
501
Plans for Storrnwater Review
2
3/8/06
Stormwater Narrative
1
3/8/06
Stormwater Permits (SW101,SW103 (3))
1
3/8/06
Check # 015701
Issue'Stams: ® For Approval ❑ As Requested ❑ Construction ❑ Bid
❑ For Your Use ❑ For Review and Comment ❑ Approved as Noted ❑ See Remarks
etion Taken: ❑ No Exceptions Taken ❑ Make Corrections Noted ❑ Amend & Resubmit
❑ Rejected - See Remarks ❑ Approved is Submitted E] Other
Ren>.arks: f eC-
P~ 1L
fa�lt-
Ti a
Tim Clinkscales,PE
��10�0
RESERVE TRAINING FACILITY & VEHICLE
MAINTENANCE FACILITY
ONSLOW COUNTY, NC
DESIGN AND STORMWATER NARRATIVE
Prepared for:
NAVFAC_
1005 Micheal Road
CAMP LEJEUNE, NC 28547
Prepared by:
PARAMOUNT
,
127 Racine Drive, Suite 202
Wilmington, NC 28403
Project #06103.PE
March 2006
Uh
MAR 0 8 2006
BY:_--
RESERVE TRAINING FACILITY & VEHICLE
MAINTENANCE FACILITY
ONSLOW COUNTY, NORTH CAROLINA
Project #06103.PE
Table of Contents
Design Narrative
Proposed Improvements / Stormwater
NC DENR Infiltration Basin Calculations
Soils Scientist Report
USGS Quad Map
Page i
RESERVE TRAINING FACILITY & VEHICLE
MAINTENANCE FACILITY
ONSLOW COUNTY, NORTH CAROLINA
DESIGN NARRATIVE
NAVFAC is proposing the construction of a Training Facility (26,500 sf) and Vehicle
Maintenance Facility (3050 sf). The property boundary will be determined by placing a fence at
the desired locations. The impervious area will be approximately 3.9 acres with a disturbed
area of 7.4 acres. The property currently is wooded and grassland. It is bordered by an
existing parking lot to the north, Rifle Range Road to the east, and woods and grassland to the
south and west. The site is located +/- 1 mile on the left side of Rifle Range Road inside Camp
Lejeune, 1.8 miles from the intersection of US Hwy 17 and NC 210.
The project is within a drainage basin which drains to the White Oak River. The receiving
stream is Stones Creek (SA, HQW, 1.5" runoff). The runoff will be conveyed through the use of
3 infiltration basins which are designed to remove 90% of the TSS. The seasonal high water
elevation was determined to be 5.5 feet, this information is placed in the report supplied by
Terracon (Consulting Engineers & Scientists) and confirmed by Vincent Lewis of NCDENR on
March 7. The infiltration rate was determined to be 2 inches/hours. Both of these items are
shown in the soils report
Infiltration basin #1 will retain the first 1.5-inches of rainfall, dual bypass weirs at elevation 16.6
m (54.45 ft) will be placed at the inlet locations. A 50' vegetative buffer will be placed at the
end of the bypass systems. Infiltration basin #2 and #3, will retain the first 4.5 inches of rainfall;
this allows no bypass or overflow to be placed in the system. The flow into the systems will be
directed through sheet flow into swales for basin #1 and curb cuts in basins #2 and #3. No
wetlands are located on the site.
PROPOSED IMPROVEMENTS / STORMWATER
The stormwater will be treated through the use of 3 infiltration basins. They will be conveyed
to the basins through sheet flow on the site. The design took into account the treatment of the
1.5 inch of runoff. The soil on the site is Baymeade, based on the Onslow County Soil Survey
For treatment calculations the procedure in the NCDENR stormwater best management
practices manual was used to determine the volume and drawdown needed for the basins. For
basin #1, the required volume for the 1.5 inch rainfall was 12,956 cf, the provided volume at
elevation 16.6 (54.45) is 13,586; therefore the 1.5-inch elevation is 54.39 ft. A pair of bypass
weirs at elevation 16.6 (54.45) are placed to convey the rainfall above the 1.5-inch storm. A 50
Page 1
foot vegetative filter is placed for each of the bypass weirs. For basin #2, the basins top
elevation is 17 m (55.7 ft), the required volume for the 4.5-inch rainfall is 21,238 cf, the provided
volume is 21,612 cf; the 4.5-inch elevation is 55.67 ft. For basin #3, the basins top elevation is
16.6 m (54.5 ft), the required volume for the 4.5-inch rainfall is 2,997 cf, the provided volume is
3046 cf, the 4.5-inch elevation is 54.45 ft.
For all the BMP's, the drawdown was determined to be less than the 5 day state requirement.
All supporting drainage calculations, drainage basin and infiltration basin information are
provided within, the following pages of this report.
MAINTENANCE
Contractors shall be responsible for periodic inspection and maintenance of all indicated
erosion control devices. In addition, inspection and any necessary maintenance will be
required immediately following any significant storm event. Any erosion control measure that
fails to function as intended shall be repaired immediately. Upon completion of construction
and the establishment of stabilized ground cover, the property owner shall be responsible for
any on going site maintenance.
Page 2
Basin #1 Infiltration Pond Calculations
Reserve Training Facility & Vehicle Maintenance Facility
NC DENR Retention Requirements
Objective.' design an infiltration basin with the folluwing characteristics: bottom of basin 2-feet above seasonal high water
level and drawdown less than 5 days; a volume that meets TSS removal requirements (values set by NC DENR)
Step 1: Determine the surface area required for 90% TSS removal
Post -Development conditions
Total Drainage Area 4.75 ACRE
Impervious Drainage Area 2.38 ACRE
Impervious Cover
50.1 %
Value from CAD
Value from CAD
Impervious Cover --(Impervious Drainage
Area)/(Total Drainage Area)*100%
Elevation of Bottom of Infiltration Basin
52.5
FT
Value selected by designer
Depth of Infiltration Basin
2.0
FT
Elevation of 1.5 inch elevation
54.5
FT
(Bottom Elevation)=(Permanent Pool Surface
Approximate Pond Length
150
FT
Elevation) -(Depth of Permanent Pool)
Value from CAD
A roximate Pond Width
50
FT
Value from CAD
Length:Width Ratio
3:1
2:
runoff
Required 1.5" Runoff Volume (Volume of
Temporary Pool)
the 1.
12,956 CF 1.5"RunoffVolume=1.5inch'Rv'1 foot/12
inch'(Total Drainage Area)
mnrravon rare
1.50
IN/HR
Value given by Soil Scientist
Top Elevation of Basin
54.50
FT
Value chosen by designer
Total Volume of Basin
13,585.99
FT
Bottom Surface Area
4,775.00
FT
Taken from Contours from Plan
'pia+',\ti •!v;'`,•�"
o j
rdra•:e; �'4nr'
RECEIVED
APR 2 6 2006
BY:
P:\Projects\Freeland-Clinkscales\06103.PE-Camp Lejeune\Documents\Design Calculations\Hydro\lnfikration Basin 1
Reserve Training Facility & Vehicle Maintenance Facility
Stage -Storage Calculations for Proposed Infiltration Basin #1
determine the storage capacity and characteristics of the proposed infiltration basin
;remental and cumulative storage of the infiltration basin per contour interve
age/Storage Above Permanent Pool (Including Forebay)
Cumulative
Contour
Incremental
Volume, S
Contour
Area (SF)
Volume (CF)
52.50
4,775
0
�(—C�F —�
l_ J - Permanent Pool
53.20
6,082
3,800
3,800
53.80
7,450
4,059
7,859
54.39
12,956 1.5" Elevation
54.5
8,912
5,727
13,586
P:\Projects\Freeland-Clinkscales\06103,PE-Camp Lejeune\Documents\Design
Calculations\Hydro\Infiltration Basin 1
Basin #2 Infiltration Pond Calculations
Reserve Training Facility & Vehicle Maintenance Facility
NC DENR Retention Re uiremenis
Objective: design an infiltration basin with the following characteristics: bottom of basin 2-feet above seasonal high water
level and drawdown less than 5 days; a volume that meets TSS removal requirements (values set by NC DENR)
Step 1: Determine the surface area required for 90% TSS removal
Post -Development Conditions
Total Drainage Area 2.21 ACRE
Impervious Drainage Area 1.34 ACRE
Impervious Cover
60.6%
Value from CAD
Value from CAD
Impervious Cover --(impervious Drainage
Area)/(Total Drainage Area) `100%
Elevation of Bottom of Infiltration Basin
53.4
FT
Value selected by designer
Depth of Infiltration Basin
2.4
FT
Elevation of 1.5 inch elevation
55.7
. FT
(Bottom Elevation)=(Permanent Pool Surface
Approximate Pond Length
260
FT
Elevation) -(Depth of Permanent Pool)
Value from CAD
Approximate Pond Width
45
FT
Value from CAD
IL ng h: our Ratio
6.1
Raline/I ann{hl//L1A.U6�.� 1
the 1
Required 1.5 Runoff Volume (Volume of
Temporary Pod)
within
21,505 CF 4.5rRunoff Volume=4.5inch'Rv'1 f0002
inch'(Total Drainage Area)
orelu v: venry mar nme required to drawdown the 1 5-inch runoff volume is within 2 to 5 days
Infitratwn Rate
1.50
IN/HR
Value given by Soil Scientist
Top Elevation of Basin
55.70
FT
Value chosen by designer
Total Volume of Basin
- 21,611.70
FT'
Bottom Surface Area
7.600.00
FT
Taken from Contours from Plan
H C Arp "6r.
( O/
All 2 6 2006
w
P:\Projects\Freeland-Clinkscales\06103.PE-Camp Lejeune\Documents\Design Calculatlons\Hydro\l filtrabon Basing
Reserve Training Facility & Vehicle Maintenance Facility
Stage -Storage Calculations for Proposed Infiltration Basin #2
determine the storage capacity and characteristics of the proposed infiltration basin
incremental and cumulative storage of the infiltration basin
Stage/Storage Above Permanent Pool (Including Foret
contour interval.
Cumulative
Contour
Incremental
Volume, S
Contour
Area (SF)
Volume (CF)
CF)CF)
53.45
7,600
0
L 0 Permanent Pool
53.80
8,300
2,782
2,782
54.50
9,400
6,195
8,977
55.10
10,550
5,985
12,956
56.67
21,358 1.5" Elevation
55.7
11,657
12,634
21,612
P:\Projects\Freeland-Clinkscales\06103.PE-Camp Lejeune\Documents\Design
Calculations\Hydro\Infiltration Basin2
Basin #3 Infiltration Pond Calculations
Reserve Training Facility & Vehicle Maintenance Facility
NC DENR Retention Requirements
Objective: design an infiltration basin with the following characteristics: bottom of basin 2-feet above seasonal high water
level and drawdown less than 5 days; a volume that meets TSS removal requirements (values set by NC DENR)
Step 1: Determine the surface area required for 90% TSS removal
Poet -Development Conditions
Total Drainage Area
0.43
ACRE
Value from CAD
Impervious Drainage Area
0.18
ACRE
Value from CAD
Impervious Cover
41 9%
Impervious Covem-(Impervious Drainage
Area)/(Total Drainage Area)`100%
Elevation of Bottom of Infiltration Basin
52.5
FT
Value selected by designer
Depth of Infiltration Basin
2.0
FT
Elevation of 1.5 inch elevation
54.5
FT
(Bottom Elevation)=(Permanent Pool Surface
Approximate Pond Length
9
70
FT
Elevation) -(Depth of Permanent Poot)
Value from CAD
Approximate Pond Width
17
FT
Value from CAD
emam:WIdth Ratio
4:1
Ratio=(Length)/(lMdth)1
Step 2: Determine the 1.54nch runoff elevation within the wet detention
pond
Runoff Coefficient, Rv
0.427
WIN
Rv=0.05+0.009`(% Impervious)
Required 1.5' Runoff Volume (Volume of
2987
CF
4.5" Runoff Volume-4.51nch"Rv"1 foot/12
Temporary Pool)
,
inch'(Total Drainage Area)
Step 4: Verify that time required to drawdown the 1.5-inch runoff volume
is within 2 to 5 days.
Infitration Rate
1.50
INIHR
Value given by Soil Scientist
Top Elevation of Basin
54.50
FT
Value chosen by designer
Total Volume of Basin
3,046.07
FT3
Bottom Surface Area
854.60
FT'
Taken from Contours from Plan
Drawdown Time for 1.5-inch Runoff
1.19
DAYS
(Drawdown Time)=(1.5-inch voluma/bottom
^SaaYligtFY iigIJV
7c(, V
o
J'•a i �Y l•I_ 1N'l��y.�. .
4
RE126�
F
TF,D
AP006
BY:
P:\Projects\Freeland-Clinkscales\06103.PE-Camp Lejeune\Documents\Design Calculations\Hydrollnflitration Basln3
Reserve Training Facility & Vehicle Maintenance Facility
Stage -Storage Calculations for Proposed Infiltration Basin #3
determine the storage capacity and characteristics of the proposed infiltration basin
and cumulative
Stage/Storage Above P
Contour
Contour
Area (SF)
52.50
855
53.15
1,275
53.80
1,727
54.45
54.50
2,211
of the infiltration basin per contour interval.
rmanent Fool (Including Forebay)
Cumulative
Incremental
Volume, S
Volume (CF)
(CF)
0
-Permanent Pool
692
692
976
1,668
2,997 1.5" Elevation
1,378
3,046
P:\Projects\Freeland-Clinkscales\06103.PE-Camp Lejeune\Documents\Design
Calculations\Hydro\Infiltration Basin3
W,
February 13, 2006
The Benham Companies, LLC
9400 N. Broadway, Suite 300
Oklahoma City, OK 73114-7401
Attention: Mr. Edward Kochick
Subject: Stormwater Detention Considerations
Marine Reserve Training Center
MCB Camp LeJeune, North Carolina
Terracon Project No. 70055102
Dear Mr. Kochick:
Irerracon
Coneul0ng Engineers & Scientists
Terracon Consultants, Inc.
5240 Greens Dairy Road
Raleigh, North Carolina 27516
Phone 919.873,2211
Fax 919.873.9655
aww.torracan.com
Terracon performed field and laboratory testing to evaluate the soil infiltration rate for use in
designing a stormwater detention pond at the proposed Marine Reserve Training Center
(MRTC) to be located at MCB Camp LeJeune, North Carolina. We previously performed a
subsurface exploration for the project and submitted the results in our geotechnical
engineering report dated January 24, 2006.
For the additional testing, we performed a field density test using the sand cone method and
collected a sample of the on -site soil to return to our laboratory for remolded permeability,
testing. The sample was remolded in the.laboratory to near the field density.
The results of the permeability test indicate a hydraulic conductivity value of 1.36x10'
cm/sec. Based on the results of the laboratory testing and our experience with similar
materials, we recommend using an infiltration rate of 1.5 to 2 inch/hour for design of the
stormwater detention pond. The results of the field density test and permeability test are
attached.
Additionally, we estimate a seasonal high water level for the site on the order of 5.5 feet
below the current ground surface. This estimate is based on the groundwater level
observations in our borings during the geotechnical exploration as well as the moisture and
color profile of the soil.
Delivering Success /or Clients and Employees Since 1965
More Than70 Offices Nationwide
Marine Reserve Training Center Terracon Project No. 70055102
MCB Camp LeJeune, North Carolina February 13, 2006
We appreciate the opportunity to be of service to you on this project. If you have any
questions Concerning this letter, or if we may be of further service to you in any way, please
do not hesitate to contact us.
Sincerely, OE:&
lrerracoSM
n
9�03
GMatthew S. Balven, P.E. . Barney le, P.E.
Project Engineer 8' t� Principal
North Carolina No. 030731 North Carolina No. 11285
Attachments
Copies to: Addressee (3)
2006 8:350 T1RfiA O:"+ fi�,,C l_ 1'p, 07� 2
PERMEABILITY TEST REPORT
TEST DATA: SAMPLE DATA:
Specimen height (cm): 10.15 Sample Identification: BORING
B-2
Specimen Diameter (am): 7.03 HAND AUGER SAMPLE
Dry Unit Weight (pcf): 95:6 visual Description: TAN BROWN
SLIGHTLY
Moisture Before Teat (`Y): 11.6 SILTY FINE SAND
Moisture After Test (R): 25.6 Remcrk9: ASTM D5084
Run Number: 1 • 2
Cell Pressure Cps;): 42.0 42.0 Moxlmum Dry Density (pcf):
Test Pressure(psi): 40.5 40.5 Optimum Moisture Content
Back Pressure(psi): 40.0 40.0
Diff. Head (psi): 0.5 0.5 Percent Compaction:
Flow Rate (cc/sec):1.go . to--1 1.11 . to--7 Permeometer type: Flexible wall
Perm. (cm/sec):. 1.36x 10--3 1.5o. 10--! Sample type: REMOLDED
TIME - t (sec)
O 25 50 75
100
O
u 2
U
v
a
4
FT I
O 8
q1
O
J
10 1
y1. 10--2
T
\ a. 70--3 t1
E
U 9. 10- 3
v
Y
4 x 10—b
H
H
ti+
J
m4 7 x t0 _!
J
W
-1
6. 1 x 10'-3
0 5 10 15
20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: STONE BAY tAARINE BASE
Project No.:
70055102
Location: CAMP LEJEUNE, NORTH CAR7REPORT
File No.:
Date: 2/13/2006
Lab No.:
Tested by:
MTS
PERMEABILITY TEST
Checked by:
CFB CFF
TITAN ATLANTIC GROUP, C _
Test: cH -
canstanaC
FIELD DENSITY TESTING
1rerracon
Report Number: 70055102.0002
Service Date: February 6, 2006
52a0 Greens Dairy Road
Raleigh. NC 27616
'
(919)873-2211
Client:
Report Date:LL February 07, 2006
Benham Companies LLC
Project: NC MRTC Project
Attn: Doug Shepard
Camp LeJeune
9400 N. Broadway
Jacksonville, NC
9400 N. Broadway OK 73114
Field Test Data
Test
No. Test Location
Test results on this report meet project specification.
Field Test Method:ASTM D-1556, ASTM D-1556
Report Distribution-.
in Swo m Companies LLC
Project No.: 70055102
Probe Water Dry Unit Dry Unit
Lift/ Mat. Depth Content Weight Weight
Elev. No. (inches) ("/6) (pef) (%compaction)
1 9.0 96.6 0.0
Reviewed by -%/,$C%J1111—y`
Matthew S. Balven
Professional 11 IGeolengr)
The tests were performed in general accordance with applicable ASTM, AASHTO, or DOT test methods. This report is exclusively for the use of the client
indicated above and shall not be reproduced except In full withou: the written consent of our company. Test results transmitted herein are on y applicable
to the actual samples tested at the locations) referenced and are not necessarily Indicative of the properties of other apparently similar or Identical
materials.
Page 1 of 1 Q, W1..,,-1,.
INFILTRATION SITE VISIT REQUEST
Name of the Project:
Location (attach a clear vicinity map
SQ/UC- 11,4 r41A
AIC4
(fir✓ tZ..A QA->e /w/+o/ - ' .& 64*y Let UVE
Street address, SR number, community, etc.
Directions from the nearest major intersection: /$},"Jn tlrk-. -I& /,? klr... Li
'F L)s dv't i7 er'Nc 210 , /Ak� GE< �- IZ14 12+-Jc X-1-/
/ H,u Cf �4YF JA efl$7N'1 /A/47
Owner/Applicant Name: US n/Q�
Consultant Name: ir11d4 (- e/i,ksb,,3 ,i 'U61 a"IG
Consultant Contact Information: q(a-52v— Ml �, mil, ks�� (? , �v -^i
#1 #2 #3 #4 #5 #6 #7 #8
Existing ground elev. @basin/trench=
SHWT elev.=
SHWT plus 2' (max. bottom elev.)=
Date/Time of Soils Investigation : h4'� 71 6F
Summary/Comments:
A/t Prr)05 w rA y, S,«wF b..�i✓ q/�i
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to
decline to do the investigation. If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided. The soils investigation does not take the place of a soils report prepared by
an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 2H.1000, and assumes no liability should the system fail.
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INFILTRATION SITE VISIT REQUEST
Name of the Project :_ 12[5e/6'E %iat [At �G 01 o' U=br64 MQ
Location (attach a clear vicinity map): UA✓ 1z16 24-,z )2-V 64 y. L e, eL O
street address, SR number, community, etc.
Directions from the nearest major intersection: /$3 m,/1s IC-, -7t,
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Owner/Applicant Name: US
Consultant Name:_ Lyra .d - el" esaLy ,F 'UC1 1,%/c-
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Consultant Contact Information:
Phone, fax, email, etc.
#1 #2 #3 #4 #5 #6 #7 #8
Existing ground elev. @basin/trench=
SHWT elev.=
SHWT plus 2' (max. bottom elev.)=
Date/Time of Soils Investigation : J % db S dd
Summary/Comments:
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to
decline to do the investigation. If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided. The soils investigation does not take the place of a soils report prepared by
an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 21-1.1000, and assumes no liability should the system fail.
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117
NO.A4 ll P. 1
(Ni
/C. M ( kSUrES
February 13, 20M
The Benham Companies, LLC
9400 N` Broadway, Suite 300
bkl6hgrr a City; OK 73,114-7401
Attention`.- Mr. Edward kochick
Subjects. Stormwater Detention, Considerations
Marine:Reserve Training Center
MCB Camp.Leieune, North Carolina
Terracon Project No: 70055102
Dear Mr..Kochick.'
Derr n
Consulting. Engineers BSclentists.
Terracon. Consultants„ Inc:
5240 Green's'Dairy Rua
Raleigh; North Carolina 27616
Phone ,919.873'.2211
Fax 919.673.9555
wwvi.ter}accn=, n`
Terracon performed field and laboratory testing to evajuate'the-soil infiltration rate for.use in
designing a stormwatec detention, pond at `the proposed Marine Reserve Training Center
(MRTC), to be located at. MCB Camp LeJeune, North%Carolina. We -previously, performed a
subsurface :exploration for the-, 'project and .submitted the results'.in our geotecnnical
engineering report dated January 24; 2006.
For the additional. testing, we performed a field density'test,using the sand cone method and
collected 'a sample of the on -site soil; to ,return to. our laboratory for remolded permeability.
testing, The sample was'remolded in the',laboratory to near`the;field density.
The .results of the permeability ,test indicate, a, hydraulic conductivity value .of 1.36z.10'3
1
cmisec. Based on the ..results.of the laboratory, testing and our experience with similar
materials:,we recommend using an infiltration' rate of-1.5,,to 2 inch/hour for design of the
stor mwater detention "pond. ' The results of the field density test and permeability test are
attached.
Additionally, we estimate a seasonal high water level for the site onthe order of,5.5: feet
below: the' current ground surface. This estimate is based on the groundwater. ',Ievel,
observations in our borings during the geotechnical exploration as well as the moisture and
color profile of the soil.
Delivering Success for.Clients and- Employees.Since 1965
More Tha`n'70 Offices NalionCvide
Mahne ReserveTraining.Center
MCB Carno LeJeune, No , rth Carolina
Terracon Project No.r70055102
Februari, 13, 2006
We appreciate the oppcTtuhity to be of service to you on this project. If you have any
questions, Golq,cemmg,ttw6
this le er or, if " may be of further service to you in anyway please
doJnot hesitate to contactl,us:
Sincerely, M
1r6r'*rla c on
E SEAL
M VVM
mifthew 8..balven, P.E.
Project,Engineer ! .
North Carolina No. 030731
Attachments
Copies to: ,Addressee (3)
�rney�. - ile P.E.
Principal
North Carolina No. 11 286
71.
N0.
t
PERMEABILITY TEST REPORT
TEST DATA.:
.SAMPLE DATA:
Specimen height (crr): 10,15
Sample Iden'tificotion: BORING B-2
'Spec'imen Dicmeter (cm): 7.03
HANDAUGERSAMPLE
Dry Unit Weight (Pcf): 45.6
Visual Oescriot-tan: Tau 60OWN SLIGHTLY
Moisture Before, Test (X):
11.8
SILTY FINE SAND
Moisture After Teet (%):
25.6
Remarks: ASTM 05084.
-Run Number:: 1
•.
2 A.
Cell' Pressure (psi) t 42.0
42.0
M6ximum Dry Dens:'ty (�pcf):
Test Pressure(psi): 40.5
40.5.
Optimum Moisture Content (%):
Back Pressure(psi):, 40.0
40.0
Diff. Heoc (psi).: 0.5
C.5
Percent Compaction:
F'ow Rate (Ca/sec).: 1.90. 10--1 a. m_. 10--1 Perm¢dmetar type: Flexible wol 1
Perm. (cm/sec)' 1.36y 10•-3 1.fio. l0--3_ Sample type: REMOLDED
O
O 4
2
d
6.
R
10
l.a t0'-2
3 x 10--3
a , 10--3
4 . 10--3
2 a 10--3
1 : 10--3
TZME - -t (sec)
25 50 75 100
av�u��un
0 5
10
15
20
AVERAGE
HYDRAULIC
GRADIENT
- dH/L (cm/cm)
Project: STONE
BAY ;1ARINE BASE
Project No.:.
70055102
Loca'ion: CAMP
LEJEUNE, NORTH CAROLINA
File No.:
Dote: 2/13/2006
Icb No.:
Tested by:
MTS�
PEERMEABILITY TEST
REPORT
Checked by:
CFB u �„� 1J
L7
TITAN
ATLANTIC GROUP,
INC.
Test: CH -
Constant head
FIELD DENSITY TESTING
Report Number 70055102.0002
1r'errac®n
Service Date: February 6, ..00G
5240 Greens Dalry Road
- Ral(;igh, hC 27616
(919)873-2211
Client: Report Date: February 07, 2006
Benham Companies LLC Project: NC MRTC Project
Atin: Doug Site peid Camp LeJeune
9400,N..Broad:gay Jacksonville,.NC
9400 N. Broadway OK 73114
Project No.: 7005M02
Field Test Data
Probe Water Dry Unit Dry Unit
Test Lift/ Mat. Depth Content 'Weight Weight
No. Test Location Elev. No. (inches) (.% (pcf) (N.compaction)
1, .1 9.0 96.0_ .. 0.0
Test results on this report meet projec(specification.
-Field Test MethodASTM.D-1556, AS T bt D-,1556
Report Distribution'
f 1) eenham CemDanie3 LLC
r
Reviewed by:_�
Mathew S. 9alven
Professional It (Gentengr)
The tests were performed in general arcomance with applicable ASTfd, AASHTO,-or DOT test methods. This report is exclusivorr for the use ofthe client
indicated above and shall not be reproduced except in_fu_t without the written consentofour company. Test results transmitted herein are only applicable
to the actual samples tested at the location(s) reterencedand are not necessarily indicative of the properties of other apparently similar or idemiwl
materials.
Page i of t
eo (<_� - I �A cer z)zz
-f
NCDENR <J: 36
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive, Wilmington NC 28405 (910) 796-7307 FAX (910) 350-2004 11)0
Request for Express Permit Review
FILL-IN all information below and CHECK required Permit(s).
FAX or email to Cameron. Weaver(@ncmail.net along with a narrative and vicinity map of the project location.
Projects must be submitted by 9:00 A.M. of the review date, unless prior arrangements are made.
APPLICANT Name Carl Baker, Director, Design Branch. Public Works Division
Company US Navy
Address Camp LeJeune City/State NC Zip 28547 County Onslow
Phone 910-451-2213 Fax ( Email carh,h.baker@usmc.mil
PROJECT NAME Reserve Trainina Facilitv & Vehicle Maintenance Facilit
PROJECT SYSTEM(S) TRIBUTARY TO STONES CREEK (STREAM NAME) White Oak River BASIN
ENGINEER/CONSULTANT Tim Clinkcales, PE
Company Freeland-Clinkscales of NC, Inc
Address 3922 Edgewood Road City/State Wilmington Zip NC County 28403
Phone (910) 520-1991 Fax (910) 251-8282 Email timclinkscales(aa)hotmail.com
State or National Environmental Policy Act (SEPA, NEPA) — EA or EIS Required ❑ Yes ❑ No
❑ STREAM ORIGIN Determination; # of stream calls; Stream Name
® STORMWATER ❑ Low Density ❑ High Density -Detention Pond ❑ High Density -Other
Wetlands MUST be addressed below ❑ Low Density -Curb & Gutter ® High Density -Infiltration ❑ Off Site
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
❑ COASTAL ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
® LAND QUALITY ® Erosion and Sedimentation Control Plan with 8_3 acres to be disturbed.
WETLANDS (401) Wetlands on Property ❑ Yes ❑ No Isolated Wetlands on Property ❑ yes ® No
Check all that apply Wetlands Will Be Impacted ❑ Yes ® No Wetland Impacts: Acres)
Wetlands Delineation has been completed ® Yes ❑ No ❑ Buffers Impacted: Acre(s)
USA COE Approval of Delineation completed ® Yes ❑ No
404 Application in process w/USACOE []Yes ®No 1 Permit received from USACE ❑Yes ❑No
401 Application required ❑Yes ® No If Yes, ❑ Regular ❑ Express
Additional fees, not to exceed 50% of the original Express Review permit application fee, may be charged for
subsequent reviews due to the insufficiency of the permit applications.
SUBMITTAL DATES: Fee Split for multiple permits:
SW $
CAMA
LQS
401
For DENR use only
$ Total Fee Amount $
Reserve Training Facility & Vehicle Maintenance Facility
Express Stormwater Narrative
February 6, 2006
Project Narrative:
The site is 8.3 acres in size and drains to Stones Creek which is classified as SA, HQW waters.
The site is presently wooded. The proposed design improvements include the construction of a
Reserve Training Center building and 160 space parking lot. Local approvals have been
obtained for the design concept through The US Department of the Navy.
A geotechnical engineering firm has been contracted to determine the infiltration rate and
seasonal high water table. Also Vincent Lewis will be contacted to conduct field investigations
to establish the seasonal high water table.
Based on the impervious area, it will be designed based on high density design. The
stormwater will be treated through the use of infiltration devices.