SW7960410_HISTORICAL FILE_20200129

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW_7G��/�/O
DOC TYPE
❑CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
DOC DATE
D491
YYYYMMDD

ROY COOPER
Governor
MICHAEL S. REGAN
secretary
S. DANIEL SMITH
Director
NORTH CAROLINA
Environmental Quallty
January 29, 2020
Mr. Charles E. Schulz, Deputy Facilities Officer
MCAS Cherry Point
PSC Box 8006
Cherry Point, NC 28533
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7960410
MCAS Cherry Point Jet Engine Test Facility
Craven County
Dear Mr. Schulz:
A Division of Energy, Mineral, and Land Resources file review has determined that
Stormwater Permit SW7960410 for a stormwater treatment system consisting of an
extended detention pond serving a Jet Engine Test Facility expires on September 13,
2020. This is a reminder that permit renewal applications are due 180 days prior to
expiration. We do not have a record of receiving a renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for
permit renewal. Application forms for renewal can be found on our website at:
t u - e - ine 1- d-
rules /stormwater-DroLyram/cost-construction, North Carolina General Statutes and the
Coastal Stormwater rules require that this property be covered under a stormwater
permit. Failure to maintain a permit subjects the owner to assessment of civil penalties.
If you have questions, please feel free to contact me at [phone]. 1 will be glad to
discuss this by phone or meet with you. If you would like, I can e-mail you a copy of the
application form. You can request a copy by e-mailing me at roger.thorpeCc-l�.ncdenr.gov.
Sincerely,
Roger K. Thorpe
Environmental Engineer
North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
_ Washington Regional Office 1 943 Washington Square Mall I Washington, North Carolina 27689
252.946.6481

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
DIVISION OF WATER QUALITY
September 13, 2006
Mr. G. W. Radford
Environmental Affairs Department
Marine Corps Air Station Cherry Point
PSC Box 8006
Cherry Point, NC 28533
Subject: Permit No. SW7960410 Renewal
MCAS Cherry Point T-10 Test Cell
High Density Stormwater Project
Craven County
Dear Mr. Radford:
Alan W. Klimek, P.E. Director
Division of Water Quality
The Washington Regional Office received a completed Stormwater Renewal Application for the subject
project on June 27, 2006. Staff review of the files and an on site inspection has determined that the project will comply
with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW7960410
dated September 13, 2006 to Marine Corps Air Station, Cherry Point for an extended detention pond to serve the Jet
Engine Test Facility located on 7 th Avenue at the Marine Corps Air Station in Cherry Point, NC.
This permit shall be effective from the date of issuance until September 13, 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. The issuance of this permit does not resolve any
previous violations of the stormwater rules for construction without a permit.
If any parts, requirements, or. limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This
request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes,
and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such
demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Roger
Thorpe or me at [phone].
AA1
erely
aodge, Regional teSupervisor
Surface Water Protection Section
Washington Regional Office
cc: ;/Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: 1 v%% nC\caterauality ore One
943 Washington Square Mall Phone [phone] North Carolina
Washington, NC 27889 Fax [phone] Naturally

State Stormwater Management Systems
Permit No. SW7960410
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
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
Marine Corps Air Station, Cherry Point
T-10 Test Cell
Craven County. .
FOR THE
continued, operation and maintenance of stormwater management systems in compliance with the provisions of 15A
NCAC 2H.1000 (hereafter referred to as the "stormwater rules') and the approved stormwater management plans
and specifications and other supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit for an extended detention pond to serve the Jet Engine Test Facility
located on 7 th Avenue at the Marine Corps Air Station in Cherry Point, NC.
This permit shall be effective from the date of issuance until September 13, 2016 and shall be subject to the following
specified conditions and limitations:
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 on page
2 of this permit, the Project Data Sheet.
3. A maximum of 35,620 square feet of built upon area is allowed.
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 approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
T —10 Test Cell
Permit Number:
SW7960410
Location:
Craven County
Applicant:
MCAS, Cherry Point
Mailing Address:
PSC Sox 8006
Cherry Point, NC 28533-0006
Application Date:
6127/2006
Receiving Stream:
UT to Slocum Creels
Classification of Water Body:
SC — NSW
Drainage area:
1 ac
Total Impervious allowed:
35,620 sf
Pond Depth:
1.2 ft
Required Storage Volume:
4,937 cf
Provided Storage Volume:
6,066 cf
Controlling Orifice:
Overflow Weir at elevation 18.5 ft

X
6. No homeowner/lot owner/developer shall be allowed to fill in, alter, or pipe any vegetative practices (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.
7. The following items will require a modification to the permit:
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 of the project area.
In addition, the Director may determine that other revisions to the project should require a modification to the
permit.
8. 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for construction and maintenance of the stormwater
management system.
a. 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 surfaces except roads.
b. During construction, erosion shall be kept to a minimum and any eroded areas of the system will be
repaired immediately.
2. The facilities must be properly maintained and operated at all times. The approved Operation and
Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled intervals.
3. The permittee shall at all times provide the operation and maintenance necessary to assure the permitted
stormwater system functions at optimum efficiency including, but not limited to:
a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved plans and -specifications
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel of
DWQ- The records will indicate the date, activity, name of person performing the work and what actions were
taken.
5. 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 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. Mail the Certification to the Washington Regional Office, 943 Washington Square Mall,
Washington, North Carolina, 27889, attention Division of Water Quality.

. r;.
7. A copy of_the approved.plans and specifications shall be maintained on file by the Permittee for a minimum of
five years from the date of the completion of construction.
Ill. GENERAL CONDITIONS
This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is
a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality
accompanied by an application fee, 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.
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-
215.6(a) to 143-215.6(c).
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)
which have 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.
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.
6. The Permittee, at least six (6) months prior to the expiration of this permit, shall submit in writing a request for
an extension along with appropriate application fee.
Permit issued this the 13 th day of September, 2006.
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Alan W. KiimeW,, P.E. Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7960410

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name: T —'10 Test Cell
Permit Number: SW7960410
Location: Craven County
Applicant: MCAS, Cherry Point
Mailing Address: PSC Box 8006
Cherry Point, NC 28533-0006
Application Date: 6/27/2006
Receiving Stream: LIT to Slocum Creels
Classification of Water Body: SC — NSW
Drainage area: 1.9 ac
Total Impervious allowed:
35,620 sf
Pond Depth:
1.2 ft
Required Storage Volume:
4,937 cf
Provided Storage Volume:
6,066 cf
Controlling Orifice:
Overflow Weir at elevation 18.5 ft

UNITED STATES MARINE CORPS
MARINE CORPS AIR STATION
1 POSTAL SERVICE CODE BOX 8003 �
CHERRY POINT, NORTH CAROLINA 28533-0003
LN90NUV 4-' %i46
66
No��rv��emb/e�r� �15 , 2006
North Carolina Department of
Environment and Natural Resources
Division of Water Quality
Water Quality Section - Stormwater
943 Washington Square Mall
Washington, NC 27889
Dear Mr. Thorpe:
This letter is being sent as a formal request to address a
minor error in the renewal Permit No. SW7960410, for the
detention pond serving the T-10 Jet Engine Test Facility, Marine
Corps Air Station Cherry Point. In the initial permit
application, dated April 17, 1996, the total drainage area was
determined to be 1.9.acres. However in the permit.renewal,
dated September 13, 2006, the total drainage area is listed as 1
acre. Enclosed are copies of the initial permit application as
well as the renewal permit to bring attention to this error.
Request that you correct the renewal permit to reflect the
actual construction design of 1.9 acres. Thank you in advance
for your help in this matter.
Please direct any questions or comments to Mr. William
Potter of the Environmental Affairs Department at (252) 466-
5376.
Sincerely,
r
J. C. CURLZN
Supervisory Environmental Engineer
By direction of the
Commanding Officer
Enclosures: 1. North Carolina Stormwater Management Permit
Application for T-10 Jet Engine Test Cell, April
'17, 1996
2. Stormwater Permit No. SW7960410 for T-10
.Test Cell, June 27, 2006

State Stormwater Management Systems Permit No. SW7960410
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
Marine Corps Air Station, Cherry Point
T-10 Test Cell
Craven County
FOR THE
continued, operation and maintenance of stormwater management systems in compliance with the provisions of 15A
NCAC 2H.1000 (hereafter referred to as the "stormwater rules'] and the approved stormwater management plans
and specifications and other supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit for an extended detention pond to serve the Jet Engine Test Facility
located on 7 th Avenue at the Marine Corps Air Station in Cherry Point, NC.
This permit shall be effective from the date of issuance until September 13, 2016 and shall be subject to the following
specified conditions and limitations:
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 on page
2 of this permit, the Project Data Sheet.
3. A maximum of 35,620 square feet of built upon area is allowed.
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 approved plans.
5. Approved plans and specifications for this project are incorporated by reference and are enforceable parts of
the permit.

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
T —10 Test Cell
Permit Number:
SW7960410
Location:
Craven County
Applicant:
MCAS, Cherry Point
Mailing Address:
PSC Box 8006
Cherry Point, NC 28533-0006
Application Date:
6/27/2006
Receiving Stream:
LIT to Slocum Creek
Classification of Water Body:
SC — NSW
Drainage area.-'-. ,:y� :., ....� : ; fi �� ,,, ...
1 ac
Total Impervious allowed:
35,620 sf
Pond Depth:
1.2 ft
Required Storage Volume:
4,937 cf
Provided Storage Volume: -
6,066 cf
Controlling Orifice:
Overflow Weir at elevation.18.5 ft

W p`TFj9Q Michael F. Easley, GovernoWA�
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
November21, 2006
Mr. G. W. Radford
Environmental Affairs Department
Marine Corps Air Station Cherry Point
PSC Box 8006
Cherry Point, NC 28533
Subject: Permit No, SW7960410 Correction
MCAS Cherry Point T-10 Test Cell
High Density Stormwater Project
Craven County
Dear Mr. Radford:
This is in response to a letter dated November 15, 2006 from J.C. Curlin requesting correction of permit
SW7960410 issued September 13, 2006. Enclosed is a corrected page 2 of the permit which should replace the
existing page 2 of SW7960410. We apologize for the error in this permit.
If you have any questions, or need additional information concerning this matter, please contact Roger
Thorpe or me at [phone].
4'ncerely ,d
��—
AEI -lodge, Re al upervisor
Surface Water Protection Section
Washington Regional Office
enclosure
cc: Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: One
943 Washington Square Mall Phone (2i2) 946.648I NorthCarolina
Washington, NC 27889 Fnx I_'33 i 46-921; NaturallrY

} C J�grFR RECE0 ) �,D Michael F. Easley, Governor
`o�rQ
�GWilliam G. Ross, Jr., Secretary y
j7 JUN 2 7 2006 North Carolina Department of Environment and Natural Resources
®���©� Alan W. Klimek, P.E. Director
Z. -W R a Division of Water Quality
SURFACE WATER PROTECTION SECTION
COASTAL STORMWATER PERMIT RENEWAL APPLICATION FORM
I. CURRENT PERMIT INFORMATION:
1. Stormwater Management Permit Number: ©410 --
2. Permit Holder's name- C0yyfttxS; G Mc;vA Cwm A%e NA"Cl^
3. Signing official's name: Geae ta,� (��►a Title:v��+,m_ ���G�Ig- 0:r
(person legally responsible for permit) ^ -
4. Mailing address: CSC. 130Y. &'00�0
Stater ZipCode:Qsss3_mb6 Phone: asz-166- A"4_FAX:
(Area Code and Number) (Area Code and Number)
5. Project Name: ,T-16 :2rA5�c Cell
6. Location of Project: (street address) �l[i1;�•n 449ti G
7. Directions to Project (from nearest major intersection)_ "G ) �t, gsa . et, 0.• . 70
Cn ts►,,\ o z \ 44aA41L ..
II. PERMIT INFORMATION "4� �lc"`"z -�+'Yn+-
'c'` -a A > a11too soon), LIAVA Wusac %-,,
1. Specify the type of stormwater treatment (wet pond, infiltration. etc.):e�k_� �a
�. List any changes (from project that was originally approved, attach additional pages if needed) Nca&
3. Do you .have a copy of the original Operation and Maintenance Agreement? Yes-KNo
Applicant's Certification:
1, (print) A-. , certify that the information included on this
permit r&fewal application, is to
dth�) beA116f my knowledge, correct and complete.
Signature:
Submit thisaomplete
designer's certification
Date: 6 -,26 `0(0
'or long with an application fee of $420.00 and a copy of the
the ddress listed below.
Not h Carolina Division of Water Quality 943 Washington Square Mall Phone (252) 94M481 Customer Service 1-877-623-6748
Washington Regionai Office Washington, NC 27889 FAX [phone] Internet, h2o.enr.state.nc.us
An Equal Opportunity/Affirmative AClion Employer — 50% Recycledl10% Post Consumer Paper
NarthCarolina
Nawrallyr

Project Name: Jet Engine Test Facility, MCAS, Craven.County���©
Stormwater Permit No. S W7960410
Owner: Marine Corps Air Station Cherry Point
JUN 2 7 2006
Professional Engineer's Certification D Q-WAR®
I, Dale A. McFarland, as a duly Registered Professional Engineer in the State of
North Carolina, have reviewed.the design application package for Stormwatcr Permit
No. 7960410 dated 30 August 1996 and inspected the Jest Engine Test Facility project
area. I have determined and attest to the best of my knowledge and abilities that the
project's built -upon area and stormwater management features were constructed in
substantial compliance with the approved plans, specifications, and correspondence.

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JUN 2 l 2006
DWQ-WARD
MAINTENANCE OF STORM WATER MANAGEMENT
SYSTEMS ABOARD MARINE CORPS AIR STATION
CHERRY POINT, NC 28533-0006
The following maintenance and operation guides for permanent and temporary storm water
management and erosion control practices shall be followed far. all practices constructed
aboard Marine Corps Air Station, Cherry Point and all Outlyin glA uxiliary Landing Fields.
n
Z1�1YQ (3)

GUIDE7.l - DURING CONSTRUCTION
All temporary and permanent storm water management and erosion control measures shall be
maintained to meet design specifications for the duration of the construction contract, by the
appropriate construction contractor. In order to assure this, contractors shall visually inspect
each permanent and temporary control measure a minimum of once per week or after each rainfall
in excess of 0,5 inches within 24 hrs. Prior to acceptance by the government, the contractor shall
perform final maintenance of all permanent practices, (i.e, re-establish grades, remove sediment,
fertilize, mulch and seed denuded areas, etc.). Coupled with final maintenance of permanent
practices, the contractor shall remove all temporary practices that will no longer be required.
Upon project acceptance by the government all responsibility for maintenance and operation of
these structures shall become the responsibility of the Commanding General; Marine Corps Air
Station, Cherry Point, North Carolina.
When projects site(s)-exceed the minimum threshold requirements of the North Carolina "General
Permit for Storm Water Discharges Associated with Construction Activities (NCGfl10000),
(currently 5 acres), the contractor shall follow the requirements of said permit. Specifically, the
contractor shall maintain a written log detailing the required weekly inspections of project
management practices, required inspection of practices within 24 hrs of a rainfall of over 0.5
inches within 24 hrs, notations of any problems observed and corrective actions taken; notations
of any off site sediment migration, presence -of foam, outfall staining, visible -sheens, dry weather
flows and presence of trash or debris. A complete description of corrective actions shall also be
included. This log shall be maintained at the project site by the contractors Quality Control
representative or other representative as determined by the Resident Officer in Charge of
Construction (ROICC). Upon completion of project, the logbook shall be submitted by the
ROICC to the Environmental 'Affairs Department (EAD), Bldg 4223 for central filing. An EAD
representative'will be responsible for periodically checking this Iog. This log is also subject to
inspection by state regulators or designated representatives.
Any off -site impacts of contractor operations shall be corrected at the expense of same.. This shall
include removal of sediment from adjacent property, cleaning of downstream storm drains and
culverts, and removal of sediment from-adjacent'watercourses and wetland areas. The contractor
shall be responsible for the cost of actual corrective actions as well as any civil or criminal
penalties associated thereto,
l of2

GUIDE 2,1 - POST CONSTRUCTION - LONG TERM MAINTENANCE
Upon final acceptance of project by the government, all permanent and temporary practices in
place will become the property and responsibility of the government. Maintenance of these
standard practices will be followed as detailed below. Prior to acceptance the government shall
perform the following inspections and implement appropriate corrective action for noted
deficiencies.:
® DETENTION/RETENTION/INFILTRATION/SEDIMENT PONDS SHALL BE
INSPECTED ONCE EVERY SIX MONTHS FOR THE FOLLOWING:
- Sediment/debris/trash accumulation
Inlet and outlet structure condition
Erosion of pond overbanks and side slopes
Displacement of artificial grade stabilization materials
Beaver damage
o VEGETATIVE FILTER STRIPS AND CONSTRUCTED WETLANDS SHALL BE
INSPECTED ONCE EVERY SIX MONTHS FOR THE FOLLOWING.
- Sediment/debris/trash accumulation,
- Inlet and outlet conditions,
- Erosion of overbanks and side slopes
- Displacement of artificial grade stabilization materials
Beaver damage
Density/condition of vegetation
CONCRETE/GRASS/RTPRAP LINED CHANNELS SHALL BE INSPECTED
ONCE EVERY SIX MONTHS FOR:
Sediment/debris/trash accumulation,
- Scouring at culvert/swale inlets and outlets
Erosion of channel and side slopes for erosion
Displacement of any artificial grade stabilization materials
Choking of flow due to vegetation or beaver damage
Within thirty days of the aforementioned inspections, appropriate corrective actions shall be
programmed for each deficiency noted. Where deficiencies pose an acute hazard to human health
or environment, corrective actions shall be implemented within 24 hrs.
2 of

Y '
/f
Mills, Oliver & Webb, Inc.
200 Country Club Drive, Plaza One, Building E, Blacksburg, VA 24060
Tel: [phone]., FAX: [phone]
April 1, 1996
North Carolina Dept. Of Environment, Health & Natural Resources
1424 Carolina Ave.
Washington, NC 27889
ATTN: Mr. William Moore
RE: Stormwater Management Application
Community Center, MCAS Cherry Point
A/E Commission No. 9454
Roberr L Mills, A.I.A.
Robert B. Oliver, P.E -
Ambler W. Webb, Jr., P.E
Philip Pappas, A.I.A.
Dan G. Rhudy, RE
Y
w . IINGTO OFFICE
APR 0 8 1996
aB19L
RF.(GE0VTa-0
JUN 2 7 2006
DWQ-WARO
Dear Mr. Moore:
As we have discussed in recent telephone conversations, enclosed please find our revised stormwater
management application package for the above referenced project. This package has been revised
in accordance with your review letter dated January 10, 1996.
The stormwater management system has been almost completely redesigned since the last submittal.
Basically, the site is broken into two pieces, one controlled with the use of a wet detention pond and
the other controlled with the use of vegetative swales or filters. For a complete description of the
management scheme, please refer to the attached Stormwater Management Narrative.
Please note that the project as a whole has changed somewhat since the last submittal. The Navy has
decided to construct the lower (southern) parking lot as an add alternate to the base bid. The base
bid provides for the preservation of the lower parking lot in its current state which is a gravel surface
with no concrete walks surrounding it. The existing lot is also smaller than the proposed new lot.
However, since there is the possibility that the new paved lot will be constructed as an add to this
contract or possibly at some time in the future, the stormwater management measures have been
designed assuming that the lower parking lot will be constructed right away.

North Carolina Dept. Of Environment, Health & Natural Resources
Page 2
April 1, 1996
I trust that this submittal will meet with your approval. However, if you should have any questions
or require any additional information, please do not hesitate to contact me.
Sincerely,
Todd D. Poff, P.E.
Civil / Structural Engineer
Enclosure
cc: Commanding General, Attn: EA Dept, MCAS Cherry Point
Mr. Tim Osborne, LANTDIV

1.
UNITED STATES MARINE CORPS
MARINE CORPS AIR STATION
PSC BOX 8003
CHERRY POINT, NORTH CAROLINA 28533-0003
5090/29154
LN
March 14, 2006
Mr. Bill Moore
North Carolina Department of
Environment and Natural Resources
Water Quality Section APR 07 2006
943 Washington Square Mall
' z 9G_Vvi�lh_o
Washington, NC 27889 yt
Dear Mr. Moore:
As discussed in a phone conversation between yourself and
Daryle Tripp of the Environmental Affairs Department in February
2006, Marine Corps Air Station (MCAS) Cherry Point is in the
process of renewing,}�tate Stormwater Management Permits
SW7951211'; SW7960410' and SW79606113�for three detention ponds
located at the installation's community center, T-10 Jet -Test
Cell, and Runway 5 Storage Area respectively. As indicated by
yourself in this conversation, State Stormwater Management
Permit Applications would not be required for the renewal of the
permit of each detention pond if no additional impervious area
was constructed or no redesign of drainage patterns occurred
which would ultimately result in an increase of stormwater flow
to the designed detention pond. Attached for your review are
aerial photos depicting site conditions in 1997 and 2004.
Comparison of these aerial photos with information collected
from site investigations of each pond verifies that no
construction or modification that resulted in the addition of
impervious area or increased stormwater runoff occurred from the
date the detention ponds were constructed to present. In
addition, inspection of these detention ponds by the Department
of Environment and Natural Resources Wilmington Regional Office
in September 2005 indicated that there were no maintenance or
construction issues with any of the detention ponds.
Due to the fact that the designed operation and capacity of
the detention ponds have not been altered State Stormwater
Permit Applications for the renewal of SW7951211, SW7960411, and
SW7960611 will not be necessary. Enclosure (1) is the $1260 fee
for renewing State Stormwater Management Permits SW7951211,
SW7960411, and SW7960611. Enclosure (2) are the 1997 and 2004
aerial photos for the detention pond constructed at the MCAS

5090/29154
LN
March 14, 2006
Cherry Point Community Center. Enclosure (3) are 1997 and 2004
aerial photos for the detention pond constructed at the T-10
Test Cell and (4) are 1997 and 2004 aerial photos for the Runway
5 Storage Area detention pond..
Thank you for your help in this manner and if you have
any questions or require additional information, please contact
Mr. Daryle Tripp of the Environmental Affairs Department at 252-
466-5747.
Sincerely,
nW LRA.Zr0 D
vir m 1 Affairs Officer
By direction of the
Commanding General
Enclosures: 1. $1260 renewal fee for State Stormwater
Management Permits SW7951211, SW7960410, and
SW7960611
2. 1997 and 2004 Aerial Photographs for MCAS
Community Center, Detention Pond
3. 1997 and 2004 Aerial Photographs for T-10 Test
Cell Detention Pond
4. 1997 and 2004 Aerial Photographs Runway 5
Storage Area Detention Pond

` State of North Carolina
Department of Environment,
Health and Natural Resources
Washington Regional Office
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
MCAS, Environmental
Attn: Doug Nelson
PSC Box 8006
DIVISION OF WATER QUALITY
August 30, 1996
Affairs Dept
Cherry Point, NC 28533
Subject: Permit No. SW7960410
MCAS - Jet Engine Test Cell
High Density Stormwater Project
Craven County
Dear Mr. Nelson:
The Washington Regional Office received the completed
Stormwater Application for the subject project on August 23, 1996.
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. SW7960410 dated August 30, 1996 to MCAS, Cherry Point,
NC.
This permit shall be effective from the date of issuance until
August 30, 2006 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, o
permit are unacceptable, you h
adjudicatory hearing upon written
following receipt of this permit.
of a written petition, conforming
Carolina General Statutes, and
Administrative Hearings, P.O. Draw
Unless such demands are made th
binding.
r limitations contained in this
ave the right to request an
request within thirty (30) days
This request must be in the form
to Chapter 150B of the North.
filed with the Office of
er 27447, Raleigh, NC 27611-7447.
is permit shall be final and
1424 Carolina Avenue, Washington, NC 27889 .
An Equal opportunity Affirmative Action Employer
Telephone [phone] FAX [phone]
50% recycled / 10% post -consumer paper.

MCAS, Environmental Affairs Dept.
August 30, 1996
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Bill Moore at (919) 946-
6481, extension 264.
Sincerely,
RogZ K. Thorpe
Water Quality Supervisor
Washington Regional Office
cc: URS Consultants, Inc.
Craven County Inspections
9ashington Regional Office
Central Files

State Stormwater Management Systems
Permit No. SW7960410
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT,_HEALTH 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
Marine Corps Air Station, Cherry Point
Craven County
FOR THE
construction, operation and maintenance of stormwater management
systems in compliance with the provisions of 15A NCAC 2H.1000
(hereafter referred to as the "stormwater rules") and the approved
stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit for an extended
detention pond to serve the new Jet Engine Test Facility located
along 7 th avenue at the Marine Corps Air Station in Cherry Point,
NC.
This permit shall be effective from the date of issuance until
August 30, 2006 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 on pages 4 and 5 of this
permit, the Project Data Sheet(s).
3. Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.
3

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name: Jet Engine Test Facility
Permit Number: SW7960410
Location: Craven County
Applicant: MCAS, Cherry Point
Mailing Address: EAD
PSC Box 8006
Cherry Point, NC 28533
Application Date: 4/17/96; original
8/23/96; complete
Water Body Receiving
Stormwater Runoff:
Classification of
Water Body:
Basin Depth:
Permanent Pool
Elevation:
Total Impervious
Surfaces Allowed:
Offsite Area
Entering Pond:
Green Area
Entering Pond':
4
Slocum Creek
SC -NSW
1.2 feet
N/A
35,620 square feet
N/A
0.5 acres

Required Storage
Volume:
Provided Storage
Volume:
Temporary Storage
Elevation:
Controlling Orifice:
4937 cubic feet
6066 cubic feet
18.5 MSL
overflow weir
4. No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices (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.
5. The following items will require a modification to the permit:
e. 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 of the project area.
In addition, the Director may determine the other revisions to
the project should require a modification to the permit.
6. 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.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for
construction and maintenance of the stormwater management
system.
a. 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 surfaces
except roads.
5

b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will be repaired
immediately.--
2. The facilities must be properly maintained and operated at all
times. The approved Operation and Maintenance Plan must be
followed in its entirety and maintenance must occur at the
scheduled intervals.
3. The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved
plans and specifications
f. Debris removal and unclogging of outlet structure,
orifice device and catch basins and piping.
4. Records of maintenance activities must be kept and made
available upon request to authorized personnel of DWQ. The
records will indicate the date, activity, name of person
performing the work and what actions were taken.
5. 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 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. Mail the Certification to the
Washington Regional Office, 1424 Carolina Avenue, Washington,
North Carolina, 27889, attention Water Quality Section.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities to change ownership, or there is a
name change to the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
11

application fee, 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.
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 143-215.6(a) to 143-215.6(c).
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) which have 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 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.
Permit issued this the 30 th day of August, 1996.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
4t�r-A. Pr6ston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7960410
7

0
MCAS, Jet Engine Test Facility
Craven County
Stormwater Permit No. SW7960410
Designer's Certification
I, _ _ , as a duly
registered Professional Engineer in the State of North Carolina,
having been authorized to observe (periodically/weekly/full time)
the construction of the project,
for
(Project)
(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.
Signatu
Registration Number
Date
8

URS CONSULTANTS, INC.
5606 VIRGINIA BEACH BOULEVARD
EXECUTIVE COVE CENTER
VIRGINIA BEACH, VIRGINIA 23462-5631
[phone]
FAX: [phone]
August 22, 1996
North Carolina Department of
Environment, Health, and
Natural Resources
1424 Carolina Avenue
Washington, NC 27889
ATTN: William J. Moore
Environmental Engineer
Division of Environmental Management
Water Quality Section
RE: Jet Engine Test Facility
Cherry Point, North Carolina
Dear Mr. Moore:
URS
A PROFESSIONAL SERVICES ORGANIZATION
ATLANTA
BO5TON
BUFFALO
CLEVELAND
COLUMBUS
DENVER
NEW YORK
NEW ORLEANS
PARAMUS, NJ
SAN FRANCISCO
SEATTLE
VIRGINIA BEACH
�8ECE1VIrI)
IA(}ISNINGTON C779CE
AUG 23M6
D.E.A
greatly appreciate you working with me to get the above referenced project approved. I have made the minor changes
to the plan sheets as you requested.
The changes include:
On Sheet C-3, I up -sized the outfall pipe to an 8-inch pipe and changed the 90 degree bend to a 45
degree bend. This will improve the maintenance characteristics of the system.
On Sheet C-9, the overflow elevation was changed to 18.50 as called for in the calculations,
The other information you requested was faxed to you. A copy of that information is attached to the two copies of Sheets
C-3 and C-9 enclosed with this letter.
I look forward to receiving the formal approval letter in the mail, and I took forward to working with you on other
projects in the future.
If you have any questions, please do not hesitate to give me a call.
Sincerely yours,
URS CONSULTANTS, INC:
James R. Fox, P.E.
Project Manager
JRF/saw

r
PLEASE REMIT TO:
PO. BOX 18238
NEWARK, NEW JERSEY 07191
PAYMENT DUE UPON RECEIPT
June 20, 1996
North Carolina Department of
Environment, Health, and Natural Resources
1424 Carolina Avenue
Washington, North Carolina 27889
ATTN: William J. Moore
Environmental Engineer
URS
A PROFESSIONAL SERVICES ORGANIZATION
VIRGINIA BEACH, VIRGINIA (804) Q9.4224
Lr5
RE: JET ENGINE TEST CELL CHERRY POINT, NORTH CAROLINA
i
Dear Mr. Moore:
Attached please fmd our revised submittal for the stormwater management facility for the above
referenced project. Our in-house geologist performed a soil evaluation and percolation test at the basin
site and a copy of that report is attached with this revised submittal. The findings indicate the proposed
basin area remains inrwet condition during most of the year. With this in mind we have changed our
design from a dry basin to a wet basin with a minimum of 6 inches of water in the basin at all times.
The basin has also been enlarged to provide additional storage above the required volume and the
outlet/elevation control structure has been relocated to the far end of the basin. The two main outfall
pipes have been channeled into grass swales to help provide added removal potential.
The base environmental department has an existing permit with DEHNR to maintain their stormwater
basins and this basin maintenance will fall under that existing permit
If you have any questions as you review this wired plan please give me a call. We look forward to an
approval on this project and to working with you on other projects in the near future.
Sincerely,
URS Consultants, Inc.
J es R. Fox, P.E.
erations Manager
JRF/jrr
Enclosure
cc: Tim Osborne,` LANTDIV Norfolk
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,*,pp4A115 2
Rational
----------------
Formula
nn
Area
Number
C Area
(ac)
CA
1
0.900
0.280
0.252
2
0.900
0.260
0.234
3
0.900
0.320
0.288
4
0.250
0.500
0.125
Weighted
Totals:
0.661
1.360
0.899
Time of
concentration=
10 min
Period
Intensity
Peak Flow
(years)
(in/hr)
(cfs)
2
4.60
4.14
5
5.30
4.76
10
6.00
5.39
25
6.90
6.20
50
7.50
6.74,
100
8.20
7.37
Hydrograph
Time of
concentration =10.0 min
Storm duration
=10.0 min
Time
Q2
Q5
Q10
Q25
Q50
Q100
(min)
(cfs)
(cfs)
(cfs)
(cfs)
(cfs)
(cfs)
0.0
0.00
0.00
0.00
0.00
0.00
0.00
5.0
2.07
2.38
2.70
3.10
3.37
3.69
10.0
4.14
4.76
5.39
6.20
6.74
7.37
15.0
3.79
4.37
4.94
5.69
6.18
6.76
20.0
3.45
3.97
4.50
5.17
5.62
6.14
25.0
3.10
3.57
4.05
4.65
5.06
5.53
30.0
2.76
3.18
3.60
4.14
4.50
4.91
35.0
2.41
2.78
3.15
3.62
3.93
4.30
40.0
2.07
2.38
2.70
3.10
3.37
3.69
45.0
1.72
1.99
2.25
2.58
2.81
3.07
50.0
1.38
1.59
1.80
2.07
2.25
2.46
55.0
1.03
1.19
1.35
1.55
1.69
1.84
60.0
0.69
0.79
0.90
1.03
1.12
1.23
65.0
0.34
0.40
0.45
0.52
0.56
0.61
70.0
0.00
0.00
0.00
0.00
0.00
0.00

* ROUT VERSION 5.4 *♦ PROJECT: jet engine 10yr ** DATE: 6/11/1996*
(Types: 1:Weir; 2:Pipe; 3:Riser) Structure 1
1:
Type
1:
Weir
Weir:
2:
Elevation (ft)
18.50
3:
Length (ft)
20.00
4:
Coefficient
3.33
Riser:
5:
Elevation (ft)
0.00
6.
Inlet Area (sf)
0.00
7:
Inlet Perimeter (ft)
0.00
8:
Orifice Elevation (ft)
0.00
9:
Orifice Diameter (in)
0.00
10:
Orifice Elevation (ft)
0.00
11:
Orifice Diameter (in)
0.00
12:
Orifice Elevation (ft)
0.00
13:
Orifice Diameter (in)
0.00
Pipe:
14:
Invert Elevation (ft)
0.00
15:
Diameter (in)
0.00
16:
Orifice Diameter (in)
0.00
17:
Length (ft)
0.00
18:
Man.ning`s n
0.000
19:
Slope (ft/ft)
0.000
20:
Entrance Lose Coefficient
0.0
Surface:
21:
Initial Elevation (ft)
18.00
Storage
Pond
Characteristics: Section
Elevation
Area
------------------------------
(ft)
(sq ft)
1
17.29
0.00
2
17.30
470.00
3
17.50
6845.00
4
18.00
10366.00
5
18.50
13900.00
6
19.00
17460.00
7
19.50
18427.00
8
20.00
19395.00
Control:
RW
= Riser acting as a weir
RO
= Riser acting as an
orifice
PI
= Horizontal pipe in
inlet
control
PO
= Horizontal pipe in
outlet
control
Time Inflow
Weir Total
Elev
Storage
(min)
(cfs)
(cfs) (cfs)
(ft)
(cu ft)
-----------------------------------------------------
0.0
0.00
0.0 0.00.
18.00
4,224.12
5.0
2.70
0.0 0.00
18.04
4,632.36
10.0
5.39
0.0 0.00
18.15
5,874.13
15.0
4.94
0.0 0.00
18.27
7,461.40
20.0
4.50
0.0 0.00
18.37
8,902.46
25.0
4.05
0.0 0.00
18.46
10,201.42
30.0
3.60
0.4 0.41
18.53
11,360.50
35.0
3.15
1.5 1.48
18.58
12,104.69
40.0
2.70
1.9 1.87
18.59
12,328.01
45.0
2.25
2.0 2.04
18.60
12,420.81
50.0
1.80
2.0 2.03
18.60
12,412.69
55.0
1.35
1.7 1.68
18.59
12,219.10
60.0
0.90
1.3 1.27
18.57
11,981.20
65.0
0.45
0.9 0.87
18.56
11,720.0S
(Calculated)

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CONTRACT NO. N62467-94-C-1158
CONSTRUCTION CONTRACT NO. N62470-94-C-4127
JET ENGINE TEST CELL
PROJECT P-070
MARINE CORPS AIR STATION
CHERRY POINT, NORTH CAROLINA
STORMWATER MANAGEMENT NARRATIVE
Revised 6/17/96
The site is located on an existing open gravel area north of 7th Avenue, east of Building 1738
and southwest of the Cargo Aircraft Refueling Area. Site improvements include the Jet Engine
Test Cell support facility, the vehicular service road and the storage and vehicular parking areas.
The overall site is broken down into 6 small drainage subbasins which are identified as A, B, C,
D, E & F. Subbasins A, B, C, & D are drained into the BMP basin on the southeast corner of the
site. Subbasin E is the paved entrance to the facility and drains out into 7th Avenue. Subbasin F
is an open grassed area which drains naturally into the ditch along the northeast side of the site
and is not being treated by the BMP basin.
The building/BMP site is located in a Petroleum Contaminated Soil Area. (PCS). The finished
floor elevation for the building had to be set at elevation 25.00 in order to keep the excavation for
the deepest footing above the contaminated ground water elevation. The ditch which runs along
the northeast side of the site has an invert elevation of 16.00 and the soils engineer felt that this
n,��3
With the finished floor elevation set at 25.00, there is no way to drain Subbasin E into the
proposed management basin. In order to accommodate the trailers on which the jet engines are
brought to the facility for testing, the pavement must slope continuously up from 7th Avenue. A
storm catch basin could be installed just off the site on 7th Avenue, but the proposed basin would
then pickup considerable additional off -site drainage which can not be handled by the proposed
basin.
invert elevation would control the ground water elevation on the site.
The invert elevation of the BMP basin area exist at around 17.50. This is only 1.5 feet above the
existing adjacent drainage ditch. The attached soil evaluation and percolation test report
indicates that this area has standing water and wetland plant species throughout. Since this site is
located in petroleum contaminated soil, we do not feel that it would be prudent to excavate below
the existing grade. f(„ �;t 7
The existing basin has been extended to encompass a total are o 166 sq ftft d provides
0,3
6,066 cubic feet of storage between elevation 18.00 and 18.5 This is approximately 23% more
storage than is required to handle the first 1 inch of runoff from this site. Flows are directed from
the discharge pipes into the basin by grassed swales and then flows through the BMP Basin to

the control piping approximately 100 feet away. Flows above the first one inch of runoff will
exit the basin over the weir structure at the north end of the basin.
Our plan is to install a 4 inch PVC pipe with a total of 11 - 3/a inch holes drilled round the pipe to
provide the allowable release rate for the BNT basin. With a total head of 1/2 foot each hole will
flow at a rate of 1.17 gpm or a total of 12.87 gpm. At this flow rate, the basin will detain the
runoff for approximately 48 hours.

24,44 >c x 21.43
24J3 X 24.64 X 24.14 X 23.94
X 2232
iC D4 X 21.72
lie 24,84 82 x 21.31
x 24M 20.37
\-GPAEL 'ARMG 19.
x 21.87 AREA 9.T7
10
X 21-M MOO
10
.0 $1 r, x 21.19 POLE 0 X191
x 20.75
x
22.74 X 22.58 x 21.49 21.40
EXSTING
x 24.05
DOSING
ti cow, PAD
EAST. X 24M 00MC, PAD x 21.7a
BLDG $2
1738 2 24
�0395 x 21-N I
x 1&10
Az . x 21.66
/X M40
x 21.25 14.01 W5
10 24.03 x 2CLO7
��+. 2277 SOIL PROFI,L a,
X 2&M x 2ZIS x 21.61 1
X 24-M 2D.58 9-o4HOLE "83"/
x
10 ARM POST
lo x 2Z22
(ryp.) 17
25. 2 x 21.. POLE 0 1 83
24.04 x 21.23 x 4
P.P. vm X 2&55 x 17X7 M09 x 12
00 x 21.75 0 ,.,r 0
x 21-12 .87 x 21 59
24 21.25 X 2 .32 X 17.77 cp 20.
X 21.61
X 2,194 X' 22.Q4
ZX 17.47
-2 X 23.50 X 21.25 x 19.50
>� 19.59 21.16
'
Ex*1140 2.37 X 21.92 X 21..
X 2.17419i GRAVEL PARXING X 2x 17.W 1 20 ST
AREA OLE
17.50
75 2&46
2107 X 2X16 X 22-20 1�5 X 2Z42 x 21.60 21. P(U 0 x 15P.74 1&00 X 17.42 x
1 .9 21-14 x 21.80 2z 59
x 23-39 87 x 1&25
x 21-86 L SOIL PR
15 x 19.85 x 19, 3 X 17,73 H 3 20.42
94 GRASS X 21.35 _10s x '59 ,l.,,SOIL PIR(;Fli< 21.47
al .19 x 3 9.74 HOLE "131"
2 X 22-74 62.46 x I X 21.47
X 24.75 50 cm
GRASS 21 _X X IC40 x 19.80
FUM-1 �.5
X 2170 2154 x 21*3 21,25 rip INV-15.
X 24.37 SIGN 21.10
X 2LASPHALT 59 X 22 04 x 21.43 VM95 ------------ 19
X 24.56 X 24- x 2541 22.99 X 22.37 x 21.77 X 21.30 X 20.$0 X 20.24 x 19.88 7f A� ASPHALT
20.66 0<
GRASS GRASS 2
-73
DEPARTWENT OF nit NAVY NAVAL FACLITIES ENGINW6W COMMOM
MARINE CORPS AIR STATION, CHERRY POINT, N.C. FIGURE 2
-GRAPHIC SCALE JET ENGINE
TEST FACILITY URIS
of
40' 80' 120' SOIL EVALUATION POINTS CORL
1 =40' T5;i2!_ mmmmmmmi - I

FEB-01 "96 O9 , 2S FROM - SVERDRUP TECH INC I V - dl S J:lj oc', i rr��,p r c•
�� ua LSiVn urr JLNvl!(V,�lMF�NTAL MANAGEMENT
NORM CAROLM STORMWATER MAMAGERCiT M=T "LI
GFN RAL LIMRMAT Ori WASHING oN OMCE
I. Pznjerx Nams d -1 Jet En ine Test Ce l 7 1996
2. l.ocauoa, ditwrifts w project Csncludc Colaoty, Addran. State Road) Aam6 aup.,
Marine Corns Air Station, Cherry point,. NC
3.()w oeS1gvw Commanding General, MCAS Cherry Pt.Pboac(8041 122-4731
4. C1>vuer'F NWIng Address S
1:1:Y NorfnTk __SW VA 023511-269fi'Y'
S. xpplicarion dxte Fee eaclaxed $_ 5.00 v
6J R=ivlugSsream filocum_ Creel: _ Gass
7.Pbjeetdescrip�on��rr,X__„1-arrp. Gi�.P.,•.�L 9�^rt,ral �1iGhiirhanr_aLsalra��,j- hiilr3ina �G
fuel_stora;e area; 330 LF 15"' RCP discharging_to existing dry pond
IL PERMIT DtI?ORMATION 1$
I.Pn-aiiti�%.R►i.�ut�,yppp SvV ��� (,
2. B=itTyc. X, K.ew Romwia Modi5adon (existingPennk NO
3. P-ojat Typelil hL*w Dca ty Domtioa Inii trujoa Odher. Rede%vlop Gew-M ____.Dir Cars
4. Ct>x�r S'zYtelFed�i �mla/App=voals Regulrsd �arr�r��i
CkMA M*r . 5ed1w=ta4oa/Erosioa CoatroI X 404 Permis___,_��
M. BUILT UPON AREA a%.Q.,.* sr_a CZWJ'QW #Qv .107for "r9cd* sir bWV)
23LRal¢e Area
Mn rr> ~ pabow wo-0-C darn, ;,Wn&" W'q
Gas sifsntion
AJJviv=ble twpeMous Area
Toss Proj= Arza
Propxed IraperviovS Area
% IV g4rvious Area
High -density
N/A
f
a() 82456 sf
C
(,81.) 35620 sf
4 3r.
d 7093 sf
Sneer N/A
Parkk0yy 25643 sf
TOMS 35620 sf
.v, STORMWAUR TRFal.TYWT p..a, A... ax „ff.ru be r., .
Discharge will flow into existing basin and infiltrate.. Weir will be constructed
to hold P of runoff; excess will flow into existing ditch.. 14ashdown from
facility areas will be pretreated in an oil/water separator before release.
Tzoisoo V Tea XDVOSd xNv'i ocazt;Zlst itra Tv:ci aaioc/TO
a

DEBi431-96 09=25 FROM:SVEV1vw6211
PACE 6�
LVr4 ur!' x v LKvNxE4NTAL MANAGEMENT
NORTR CAROLINA STORMR'ATER M&NAGENMIM P$R.� =II yA^MLICATION w �'
GE NF.iZA.L WF'ORMATJQN I WASHING ON OFFICE
I- l f� N slrldard T_I„Cl Jet :mine 'Pest Cell _„�p� { 7 1996
2. Location, d4vcdous TO Project ('include COW09y, Address, State Rood) Attu a".
i?arine Corns Air Station, Cherry point,. 1:C
3- 0waer'3 Name_ Commanding General, MCAS Cherry '_'t .
4. C Nru"'S Maliiag
1-1,7x or ,,Z StM VA Zip 3511-2699
S. j►PFaicattoa due Fee eadosd $ 385.00
6-Vesn=R=iv1ugSrream slgcum. Creek C�iSs
7. P b jeetdeseripdon _
fuel storage area; 330 LF 15" RCF discharging to existing dry pond
II. PZRN= INPORMA71011
1-PtrWitNa-fzr�.�iu.rklyp �� P �¢/0
2. P�=it Type X � New � Rawwal Modificalon (exiting Permit No.
3. Project Typali, �hjAw-Den icy Desenwo Tnfiitr4ion Other: Redevetop General Dir Crrt
4. C>br Sta e/Fedcrai psmlrJAp mv&1s Requ4-ci mw& arrmpnw*&Aw
COMA Maja�-- 5edim=%adon/Erosion Coatrol X 404 Perriiii-
III. BUILT UPON AREA mh� am NcAcsfrlu� wr .!Danger
I2aiwn Dreir4mr, AMak-down of jMRSCJ Area
Nip &U— a tore+At edsx �,Wrvow arcaj
GzstifiicAdon high -density 8u diz 7093 sf _ R
Allowable ImpeMow Area NO/P_
Tom Project A= (114�() 82450 sf
Prop oaed impervious Area (, g z-) 15620 s f
Uvervious Arez
4 33%_�_�
. V. STORMVPATER TREATNM NT raro+ Avv ak ,,..0,4u b, *,.o
sheers/A
P&ldag/Sw 2564.3 sf.
Otber 2884 f
Toixis 35 620 s f
Discharae will .flow into existing basin and infiltrate. 14eir will be constructed
to hold 1" of runoff; excess will flow into existing ditch. ?dashdown from
facility areas will be pretreated in an oil/water separator before release.
T40/300it I£o 7.91ii'01114 JAM SC8SM39TTWU Tt=CT WOC/TO

FES-01-9G.09=2S FROM:SVERDRUP 'TECH INC 10:615 393 6211 PAGE 7/21
• V1/.'Vl �V 1V+�♦ V�i♦JJVa.1�V �v ..r, • ...vvM'.'. �. _r- � .�
DEW RESTRICTIONS AND PROTECTIVE COVENANTS
Deed rummuoos and .pruamdwe coveaaats are required .to be recordai for all 101w density projeers aAd all
subdivietow prior to tau sale of nay lot. Phase see Attachmew A for the specific hams that must be recorded
for't�e type of prof= applied for.
By your s4pim re below, you cerdlLf than 9U tacordod deed ,restrictions &W projective coveaanm for this project
shall inch& ail the item required by the permit, that the covenants wt71 be biudial; on all patties and persoas
Cla ML4 under d w=, that they will run whb the I&W, that the covenant cuum be chaazed or deleted ,i+ithout
aoac=rettcs f>;ota the S=6, and thu they wil be recorded Prior to die sale of atWy 10L
v!. OWNER'S CE3tTWCATIOPI
1, _ cereify that cite informauoa included on this prrml:
M60M PFiW w JY� — 4c4ftl
application form a correct, that the project wUl be corlstrueaed in conformance with the approved pl=, that
die deed rer ri=ions 1vUl be recorded witb all required peraik conditions, and that tQ the best of my knowledge,
the prOPOSW pmj= complies with tha reclsdirel =a of ISA NCAC 2A.10W,
i zttthvtize the below Parued penou or firm w subi stormwatu piss on my behalf.
Ow=/Aud=ized Agent Slpature and 71;de Dam
AGENT JLUMORJZAT`ION ywvrrU aa+rnimi
Person or ftrtlz I Sverdrun Technology, Inc.
Mailing Add=* 600 William aiorthern Blvd., P.O. Box 884
City Tullahoma ; — Stage TN Zip 37388 pbone(615) 455-6400
Please suet Ut application, fee, plans sad calculations to the approprim Regional Office.
cc: Appl i=VW!R0//Ceaurtil Fles
Offieo use only

C
URS CQNSULTANTS, INC. PAGE ....f ...... OF .......... .
SHEET NO....... OF .......... .
PROJECT..`.!1-=T.... Eeea.W.i�..7—F-ST... JOB HO.
SUBJECT...................................................................... I ....... MADE BY. �1LM . DATE C�/i Z I Q_
......... CHKD.BY .......DATE........
REF.
PAGE
70
30
vi,1 yrr l l2q✓7�D vi I /D� Cu M ti M vP)�
'ZcJ�ovdtarn r;l aver 4rea5
� rea5 A are P r;ol--d / I
�r(e'-4i � T�htef Sed�faxJfS /r17� gofvrrJ rr
IQG7�r�✓lGe Gro5rorn g rwt,e�[+�hwinA aha �cSCyv
c�
f i
K, Ioct = z
n = o. or 3 for Kc P
LIB A: C =0.90 Q= CZA
_ j,g m�kl i aC`aG 7 m1 k.
7.0
fe
kr�a B% Cs O.90 A=D.Z9 we
Ghj- 23a,- zo.00 = o.
G = 9o'
_ 7,0 rn //Ir
i}reg C ; = o • 9C7 r i4 = 0- 4-1 Z,,-
d�7= ZZ,go- Zl.bo=l.r{o
L = roo'
G = 70
1 ITS vi = O.ol3 V.—:
=;7"D = /s " @ a. / '7o .5110
('?= d•g0( ,0)(0,�/)= Q,� c�'-

URS CONSULTANTS, INC.
PROJECT......... .... ----................ .......... ..............
SUBJECT............... ................... .............. ..........................
`TA 6-5-1571.0X¢ A-G E 17RE;4
�7. S
730
d
o
/g .P
616' 1
/7Z7
1727
l6 I
65�2,
2-3�-3
le. z
,
3o37
18.3
7z
-713
3 -7 50
18. � 770•2- 75l 457a/
lb, 5 8039 7311 . 5290
PAGE ... � .....
OF ...........
SHEET NO.......
OF ...........
JOB NO . .......................
MADE BY .I PP4 ..
DATE .�1/112115y
CHKD. BY .......
DATE ....... .
REF.
PAG E
f#ssun-,e /r7�7�7�uT�or7CiLc ? r'cz� ec�oq�, vo�-
..Jt_ o� Yu%1DTT �Yovr, P_YITlY{ Sri wr �f ��'�ra-�< -�aY�rr� �t boi7vm u�ev. 17.5.
I+r Co.ZS� o��r a, 5L/}a� x 4351fl0 �ac =
1
vrJ� %'hrs aSSu.-m.c� � o� Y'clvl �7q
J r crb5o rp i Il&-yl / a-1 J does knob Inc 4,, 6, c�, S acres
lr�I / poH�,

Rational Formula
Area Number
C Area
(ac)
CA
1
0.900
0.280
0.252
2
0.900
0.280
0.252 `
3
0.900
0.410
0.369
Weighted Totals:
0.900
0.970
0.873
Time of
concentration=
5 min
Period
Intensity
peak Flow
(years)
( in/hr )
(cfs)
2
5.70
4.98
5
6.40
5.59
10
7.10
6.20 ✓
25
7.90
6.90
50
8.80
7.68
100
9.40
8.21
Hydrograph
Time of concentration = 5.0 min
Storm duration = 5.0 min
Time
02
05
010
025
050
0100
(min)
(cfs)
(cfs)
(cfs)
(cfs)
(cfs)
(cfs)
0.0
0.00
0.00
0.00
0.00
0.00
0.00
5.0
4.98
5.59
6.20
6.90
7.68
8.21
10.0
4.56
5.12
5.68
6.32
7.04
7.52
15.0
4.15
4.66
5.17
5.75
6.40
6.84
20.0
3.73
4.19
4.65
5.17
5.76
6.15
25.0
3.32
3.72
4.13
4.60
5.12
5.47
30.0
2.90
3.26
3.62
4.02
4.48
4.79
35.0
2.49
2.79
3.10
3.45
3.84
4.10
40.0
2.07
2.33
2.58
2.87
3.20
3.42
45.0
1.66
1.86
2.07
2.30
2.56
2.74
50.0
1.24
1.40
1.55
1.72
1.92
2.05
55.0
0.83
0.93
1.03
1.15
1.28
1.37
60.0
0.41
0.47
0.52
0.57
0.64
0.68
65.0
0.00
0.00
0,00
0.00
0.00
0.00

,K ROUT VERSION5.4 ** PROJECT: JET ENGINE TEST 10 YR. DATE: 6/24/1995*
(Types: 1:Weir; 2:Pipe; 3:Riser) Structure 1
1: Type
1:
Weir
Weir:
2: Elevation (ft)
18.30
3: Length (ft)
20.00
4: Coefficient
3.33
Riser:
5: Elevation (ft)
0.00
6: Inlet Area (sf)
0.00
7: Inlet Perimeter (ft)
0.00
8: Orifice Elevation (ft)
0.00
9: Orifice Diameter ( in )
0.00
10: Orifice Elevation (ft)
0.00
11 : Orifice Diameter (in)
0.00
12: Orifice Elevation (ft)
0.00
13: Orifice Diameter (in)
0.00
Pipe:
14: Invert Elevation (ft)
0.00
15: Diameter (in)
0.00
16: Orifice Diameter (in)
0.00
17: Length (ft)
0.00
18: Manning's n
0.000
19: Slope (ft/ft)
0.000
20: Entrance Loss Coefficient
0.0
Surface:
21: Initial Elevation (ft)
17.50
Storage
Pond Characteristics: Section
Elevation
Area
------------------------------
(ft)
(sq ft)
1
17.40
0.00
2
17.50
738.00
3
18.00
6169.00
4
18.50
8085.00
5
19.00
9920.00
6
19.50
12870.00
Control:
RW = Riser acting as a weir
RO = Riser acting as an
orifice
PI = Horizontal pipe in
inlet
control
PO = Horizontal pipe in
outlet
control
Time Inflow
Weir Total
Elev
Storage
(min)
-------------------------------------------------------
(cfs) (cfs) (cfs)
(ft)
(cu ft)
0.0
0.00 0.0 0.00
17.50
40.50
5.0
6.20 0.0 0.00
17.89
965.96
10.0
5.85 0.0 0.00
18.22
2,723.46
15.0
5.51 2.0 2.04
18.40
4,021.81
20.0
5.17 4.7 4.74
18.47
4,638.15
25.0
4.82 4.9 4.87
18.47
4,664.63
30.0
4.48 4.4 4.36
18.46
4,558.48
35.0
4.13 4.2 4.23
18.46
4,528.94
40.0
3.79 3.6 3.62
18.44
4,397.49
45.0
3.44 3.6 3.61
18.44
4,393.30
50.0
3.10 3.3 3.33
18.44
4,332.43
55.0
2.75 3.0 3.01
18.43
4,257.17
60.0
2.41 2.7 2.67
18.42
4,177.72
65.0
2.07 2.3 2.33
18.41
4,095.53
70.0
1.72 2.0 2.00
18.40
4,010.43
75.0
1.38 1.7 1.67
18.39
3,921.88
80.0
1.03 1.3 1.33
18.37
3,829.07
_
) -n , 7

Appendices
ESTIMATING' RUNOFF
Esumatinc peak: rate of runoff, volume of runoff, and soil loss are basic to the
design of erosion and sedimentation control facilities.
There are many methods of determining runoff. Two acceptable methods, the
rational method and the Soil Conservation Service (SCS) peak discharge
method, are do scribed in this section.
The rational method is very simple in concept but relies on considerable
judgment and experience to evaluate all factors properly. It is used primarily for
small drainage areas (less than 50 acres). The SCS method is more sophisticated
hydrologically and offers a more accurate approximation of runoff, particularly
for areas larger than 20 acres. Choice of method for small areas depends
primarily on the experience of the designer.
The rational formula is:
Q = CiA
Rational Method
where:
Q = peak rate of runoff in cubic feet per second (cfs).
C = runoff coefficient, an empirical coefficient representing the
relationship between rainfall rate and runoff rate.
i = average intensity of rainfall in inches/hour, for a storm duration
equal to the time of concentration, TC.
TC = time of concentration, in minutes; the estimated time for runoff
to flow from the most remote part of the watershed to the point
under consideration. It consists of the total time for overland
sheet flow and concentrated flow (channel and/or pipe flow).
A = drainage area in acres.
The general procedure for determining peak discharge using the rational
formula is presented below and illustrated in Sample Problem 8.03a.
Step 1. Determine the drainage area in acres.
Step 2. Determine the runoff coefficient, C, for the type of soil/cover in the
drainage area (Table 8.03a).
If the land use and soil cover is homogenous over the drainage area, a C value
can be determined directly from Table 8.03a. If there are multiple soil cover
conditions, a weighted average must be calculated, or the area may be
subdivided.
Step 3. Determine the time of concentration, TG, for the drainage area (i.e., the
time of flow from the most remote point in the basin to the design point, in
minutes).
8.03.1

El
Table 8.03a
Value of Runoff Coefficient
(C) for Rational Formula
Land Use
C
Land Use
C
Business:
Lawns:
Downtown areas
0.70.0.95
Sandy soil, flat, 2%
0.05.0.10
Neighborhood areas
0.50-0,70
Sandy soil, ave., 2-7%
0.10-0.15
Sandy soil, steep, 7%
0.15-0.20
Residential:
Heavy soil, flat, 2%
0.13-0,17
Single-family areas
0.30-0.50
Heavy soil, ave., 2-7%
0.18-0.22
Mufti units, detached
0.40-0.60
Heavy soil, steep, 7%
0.25-0.35
Mufti units, attached
0.60-0.75
Suburban
0.25-0.40
Agricultural land:
Bare packed soil
Industrial:
Smooth
0,30-0.60
Light areas
0.50-0,80
Rough
0,20-0.50
Heavy areas
0,60-0.90
CuMivated rows
Heavy soil no crop
0.30-0.60
Parks, cemeteries
0.10-o.25
Heavy soil with crop
0.20.0.50
Sandy soil no crop
0,20.0.40
Playgrounds
0,20-0.35
Sandy soil with crop
0.10-0.25
Pasture
Railroad yard areas
0.20-0.40
Heavy soil
0.15-0.45
Sandy soil
0.05-0.25
Unimproved areas
0.10-0.30
Woodlands
0,05-0.25
Streets:
Asphalt
0.70-0.95
Concrete
0.80-0,95
Brick
0.70-0,85
Drives and walks
0.75-0.85
Roofs
0.75-0.85
NOTE: The designer must use judgment to select the appropriate C value
within the range for the appropriate
land use. Generally, larger
areas with
permeable soils, flat slopes,
and dense vegetation should have lowest C
values. Smaller areas with slowly
permeable soils, steep slopes,
and
sparse vegetation should
be assigned highest C values.
Source: American Society of Civil Engineers
The overland flow portion of flow time may be determined from Figure 8.03a.
The flow time (in minutes) in the channel can be estimated by calculating the
average velocity in feet per minute and dividing the length (in feet) by the
average velocity.
Step 4. Determine the rainfall intensity, frequency, and duration (Figures 8.03b
through 8.03g--source: North Carolina State Highway Commission, Ian.
1973). Select the chart for the locality closest to your location. Enter the
"duration" axis of the chart with the calculated time of concentration, T0. Move
vertically until you intersect the curve of the appropriate design storm, then
move horizontally to read the rainfall intensity factor, i, in inches per hour.
Step 5. Determine peak discharge, 0 (f13/sec), by multiplying the previously
determined factors using the rational formula (Sample Problem 8.03a).
8.03.2

Appendices
Sample Problem 8.03a
Determination of peak runoff
rate using the rational
method.
Q - CiA
Given:
Drainage area:
20 acres
Graded areas:
12 acres
Woodland:
8 acres
Maximum slope length:
400 it
Average slope:
3%, area bare
Location:
Raleigh. NC
Find:
Pear runoff rate from 10-yr frequency storm
Solution-.
(1) Drainage area: 20 acres (given)
(2) Determine runoff coefficient, C.
Calculate Weighted Average
Area
Graded' 12 x
Woodland -a x
20
C from Table 8.03a
0.45 5.4
0.15 L2
6.6
C - 6.6/20 = 0.33
(3) Find the time of concentration, Tc, from Figure 8.03a using maximum
length of travel = 400 ft and height of most remote point above outlet
= 400 ft x 3% - 12 ft; assume overland flow on bare earth.
Tc = 3.2 minutes.
NOTE: Any time of flow in channel should be added to the overland flow
to determine Tc.
(4)Determine the rainfall intensity factor, i.
i - 8.0 inches/hr (from Figure 8.03e) using 5-minute duration
(5) 0 = C(i)(A)
Q 0.33(8.0)(20) = 52.8 cfs; Use 53 cis
'For graded areas use C value range for smooth, bare packed soil
(Table 8.03a).
8.03.3

0
as
M
0
w
a
0
C_
O
a
a>
0
E
2
O
E
O
t
S
N (ft)
m
0
t
QS
c
m
E
M
E
X
to
Note:
Use nomograph Tc for natural basins with well-defined channels, for overland
flow on bare earth, and for mowed -grass roadside channels.
For overland flow, grassed surfaces, multiply Tc by 2.
For overland flow, concrete or asphalt surfaces, multiply Tc by 0.4.
For concrete channels, multiply Tc by 0.2.
Figure 8.03a Time of concentration of small drainage basins.
Tc(min)
200
100
S0 _ ~-
10
5
M
8.03.4

20
15
1�
8
:3 6
0
z
n 4
a�
U
C
T 2
C
Gl t
08
ro 0.6
c
a 0a
02
oil Al*ltojm
n�.
i•
i
10 20 40 60
Minutes
Figure 8.03b Rainfalll intensity duration curves —Wilmington.
20
15
10
8
� 6
0
t 4
V)
CD
.E 2
T
� 1
c_ 0.8
0.6
G
Cr
oa
02
01
5
Duration
2 3 4 6 8 12 18 24
Hours
w■
rs�■■t■�w�rwt�a■www�
��■
[���ti��a��\tip\\`�
t0 20 40 60 2 3 4 6 8 t2 18 24
Minutes Hours
Duration
Figure 8.03e Rainfall intensity duration curves —Hatteras.
Appendices
8.03.5

a
m
0.1
5
l Greensboro
at`\.
GOWN
10 20 40 60 2 3 4 6 8 Q 18 24
Minutes Hours
Figure 8.03d Rainfall intensity duration curves —Greensboro.
2C
IS
IC
8
7 6
O
L 4
N
m
L
U
G
2
.S 0.8
iv 0.6
c
04
0.2
lox
Duration
�_ INNNNN■
� .
�N��NNt�
WEIRS�arrraa�t
M■t�t■■■�■iIIN■�■trautmm"tiw■■
MO
�NNNNrwrNNNa�:
Minutes
Duration
Figure 8.03e Rainfall intensity duration curves —Raleigh.
Hours
8.03.6

URS CONSULTANTS, INC. ! PAGE OF ..........
.�� L �9G�I�� � � I ... �1�L ILIT-V. SHEET NO. ...... OF...........
PROJECT.. ........................ JOB NO.
SUBJECT.............................................................................. MADE BY........DATE........
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SOIL EVALUATION AND PERCOLATION TESTS
URS PROJECT 06-42227
JET ENGINE TEST CELL FACILITY
CHERRY POINT, NORTH CAROLINA
On May 31, 1996, a soil evaluation and percolation test was performed at the Jet Engine Test Cell
Facility. The purpose of hand auguring was to develop a soil profile and to determine the depth
of the seasonal water table. The purpose of the percolation test was to determine the retention
time necessary for a future water retention basin.
Three soil borings, B1, B2, and B3 were hand augured. The location of these borings is shown
in Figure 1. Soil boring logs for borings B1, B2, and B3 are provided as attachment 1. Near
boring B3, a test hole was augured and a percolation test was performed. Test holes were not
augured near borings B1 and B2 as the ground surface at these holes was located in 4 to 12 inches
of standing water. The standing water was remaining from a heavy rain 48 hours before the field
investigation. Some wetland plant species, needlerush and sedges, were observed in the standing
water. The raw data and test results for the one percolation test are provided as attachment 2.
Groundwater was observed in boring B3 at 7 feet below grade. A possible seasonal high water
table exists at this location at 4.5 feet below grade. Soils at this depth in boring B3 display bright
orange mottling. Typically, soils that are saturated for substantial periods of the growing season,
but not long enough to produce gleying and reducing conditions, will display bright mottles. Soils
that have brightly colored mottles may therefore be indicative of a fluctuating water table
(USACE, 1987). The fact that mild suction on the auger also occurred at this depth, may indicate
hydrostatic pressure associated with a seasonal high water table.
`USACE, 1987. Corps of Engineers Wetland Delineation Manual, Technical Report Y-87-1.

ATTACHMENT 1
AUGER HOLE B1 LOG
L bology
USCS CODE
Depth (feat)
Remarks
top soil, black, organic -rich, roots
PT
0
clay loam, roots, gritty clay with
OL
0.5
wet; 30% silt, 70°% clay; no
some silt; ribbons 1-2 inches long,
hydrocarbon odor
nondistinct fingerprint; dark
_
greenish grey (10Y311)
clay loam, gritty clay with some
OL
1
moist; 20% sand, 25% silt, 55% clay;
silt and very fine sand; ribbons 1-2
no hydrocarbon odor
inches long; nondistinct
fingerprint; dark greenish black
(5GY2.S/1)
sandy clay loam, gritty sand, silt
SC
1.5
moist; Fe mottling, 35 % sand, 35 %
and clay, ribbons 1 inch long aW
silt, 30°% clay; no hydrocarbon odor
forms firm ball; dark greenish grey
(5GY4/ 1)
sandy clay loam, gritty sand, silt
Sc
2.0
very moist; Fe mottling; slight suction
and clay, nbbons 1 inch long and
on hole; 35 % sand, 3S % silt, 30 %
forms firm ball; dark greenish grey
clay; no hydrocarbon odor
(IOY411)
sandy clay loam, gritty sand, silt
Sc
2.5
very moist; Fe mottling; great suction
and clay, ribbons I inch long and
on hole; 35 °% sand, 35°% silt, 30 ib
forms firm ball; dark greenish grey
clay; no hydrocarbon odor
(10Y511)
3.0
3.5
4.0
4.5
5.0
Note: not able to retrieve any samples deeper than 2.5' due to suction

ATTACHMENT 1 (cent)
AUGER HOLE B2 LOG
Lithology
USCS CODE
Depth
Remarks
(fact)
top soil, black, organic -rich, roots
PT
0
clay loam, sticky, forms 1-2"
OL
0.5
wet, 25% sand, 35% silt, 40% clay; no
ribbons, nondistiact fingerprint,
hydrocarbon odor
gritty, fine sand, silt and clay; dark
greenish grey (5GY4/ 1)
silty sand, sand, silt and small
SM
1
wet, 75% sand, 20% silt, 5% clay; no
amount of clay; dark greenish grey
hydrocarbon odor
(5GY511)
silty sand, sand, some silt; dark
SM
1.5
very wet, 90% sand, 10% silt; no
greenish grey (SGY5/1)
hydrocarbon odor
silty sand, sand, some silt.; dark
SM
2.0
very wet, 90% sand, 10% silt; great
greenish grey (5GY5/1)
amount of suction; no hydrocarbon
odor
2.5
3.0
3.5
4.0
4.5
5.0
Note: not able to retrieve any samples deeper than 2' clue to suction

ATTACHMENT 1 (coat)
AUGER HOLE B3 LOG
iithology
USCS CODE
Depth
Remarks
(feet) -
top soil, black, organic -rich, roots
PT
0
silty sand; loose fine to medium grained
SM
0.5
black streaks; 85 % sand, 10 °% silt, 5 %
sand and silt with a little clay; dark
clay; no hydrocarbon odor
yellowish brown (10YR414)
top soil, black, organic -rich, roots;
PT
1
organic -rich odor, no hydrocarbon odor
2.5N
top soil, black, organic -rich, roots;
PT
1.5
organic -rich odor, no hydrocarbon odor
2.5N
top soil, black, organic -rich; 2.5N
PT
2.0
organic -rich odor, no hydrocarbon odor
sandy loam, fine sand, silt and clay;
Sc
2.5
black streaks; 35 °% sand, 35 % silt,
greenish black (10Y2.5/1)
30% clay; no hydrocarbon odor
sandy loam, sand, silt and clay, gritty,
Sc
3.0
moist, 30% sand, 30% silt, 35% clay;
forms a delicate ball; black (2.5N)
no hydrocarbon odor
clay loam, sand, silt and clay, forms
OL
3.5
moist, 15% sand, 40% silt, 40% clay;
nbbon 2 inches long, nordistinct
no hydrocarbon odor
fingerprint; dark greenish grey
(IOY3/ 1)
silty clay loam, silt and gritty soft clay,
OL
4.0
moist, Fe -mottling, black streaks, 30%
forms 2 inch ribbon, distinct
silt, 70% clay; no hydrocarbon odor
fingerprint; greenish grey (10Y5/1)
silty clay loam, silt and gritty mediuru
OL
4.5
moist, Fe -mottling, black streaks, 20%
stiff clay, forms 2 inch ribbon, distinct
silt, 80°% clay; no hydrocarbon odor;
fingerprint; greenish grey (IOY5/1)
some suction
silty clay loam, silt and gritty medium
OL
5.0
moist, Fe -mottling, black streaks, 20%
stiff clay, forms 2 inch ribbon, distinct
silt, 80°% clay; no hydrocarbon odor;
fingerprint; greenish grey (10Y5/1)
some suction

ATTACHMENT 2
SOIL EVALUATION PERCOLATION TEST DATA
!ET ENGINE TEST CELL FACILITY
11ole
Diameter
Hole
Depth
llole
No.
Time
B un
Time
Time
Time
Time
Time
Time
Time
Time
Time
Tone
Rate
Min.
Per
Inch
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
Depth
to
Water
3.25"
36"
B3
8:45
9:00
9:15
9:30
9:45
10.15
l0:45
11:15
L.,45
12:15
12:45
80
31.5"
31.5"
31.5"
31.5"
31.875
31..975
31,875'.875"
31.875"
31.875'
]Mote: rate is based on last recorded change
Percolation 'rest Procedure
The percolation test is a field procedure conducted in the soil horizon(s) selected for installation of a proposed subsurface soil absorption system for the purpose of observing the
rate of clean water permeating the soil under saturated conditions. The following is a description of the procedure used for this project.
1. Band auger test hole within 4 to 6 feet of profile hole.
2. Fill test hole with potable water to a depth of 6 inches over the bottom of the hole.
3. Record the water drop with a measuring stick every 15 minutes for the first hour,
4. Record the water drop with a measuring stick every 30 minutes for three consecutive hours immediately after the first hour.
5. After recording the water surface drop each time interval estimate if. based on the last reading, the hole will go dry add sufficient water to maintain not more than one inch water
depth over the bottom of the hole at the end of the test period.
6. The last drop measured is used to compute the percolation rate for the hole tested.

URS CONSULTANTS
56C6B VIRGINIA BEACH BOULEVARD EXECUTIVE COVE CENTER
Letter of Transmittal
To:
Attention:
Gentlemen:
We are sending you ❑ Attached ❑ Under Separate Cover Via
❑ Shop Drawings ❑ Drawings (Prints) ❑ Pro
❑ Product Data ❑ Project Manual ❑ Ch
❑ Samples ❑ Tracings ❑ Technical Specifications
VIRGINIA BEACH, VIRGINIA 23462 [phone]
Date:
SubiE
Project Mgr..
a
' the following items:
posal Request ❑ Copy of Letter
nge Order ❑
COPIES DRAWING NUMBER DATE 1 DESCRIPTION J DISP,
mv
WA
RECErVED
1990!
JN
lEs
These are transmitted for the following disposition:
1. For Your Approval 4, For Review and Comment 7. Conforms As' Is
2. For Your Use and Information 5. For Bidding 8. Conforms As Noted
1 As Requested 6. For Construction 9. Does Not Conform
10,
Note: Drawings and Specifications shall not be used for construction unless noted. "For Construction''
Remarks:
Copies to:
Signed:
These are transmitted for the following disposition:
1. For Your Approval 4, For Review and Comment 7. Conforms As' Is
2. For Your Use and Information 5. For Bidding 8. Conforms As Noted
1 As Requested 6. For Construction 9. Does Not Conform
10,
Note: Drawings and Specifications shall not be used for construction unless noted. "For Construction''
Remarks:
Copies to:
Signed:

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