SW8070933_Historical File_20071221

EDA pa
4140 Parklake Avenue
Suite 300
Raleigh,NC 27612
F7��1�". j Pa 1 Phone: [phone]
E,` r i north carolina Fax: : [phone]
Architects • Engineers IIIPlanners www.EDApa.com
TRANSMITTAL
To: Mary Jean Naugle From: Vince Antrilli
Project # 2005402.01
Date: 12/20/2007 RE: Morehead City Baseball Park
Detail Sheet
WE ARE SENDING YOU: x Enclosed El Under separate cover x UPS
THE FOLLOWING ITEMS:
El Shop Drawings El Samples ❑ Specifications
El Plans ❑ Prints El Change Order#
El Computer Disc/CD ❑ Copy of Letter ❑ Pay Application #
Number Copies Dote Drawing„'SGct on ID# Description
I2 ' Sheet C-12 I Detail Plans I
THESE ARE TRANSMITTED as checked below:
x For approval El Approved as submitted El Re-submit copies for approval
El For your use El Approved as noted ❑ Submit copies for distribution
El As requested El Returned for corrections Cl Return corrected prints
El For review and comment
El For Bids due:
REMARKS: Please call to confirm status 919-906-6151. Happy Holidays.Vince
RECEIVED
Raleigh •Jacksonville u Morehead City DEC 2 1 2007
BY:Sl8 09 0c't ,3

INFILTRATION BASIN ANALYSIS
FILENAME: s:\wqs\stormwater\excel spreadsheetslinbasin1070933.nov07
PROJECT NUMBER: SW8 070933.nov07 First Run Date: November 27, 2007
PROJECT NAME: Morehead City Baseball Park Last Modified: 20-Dec-07
REVIEWER: = mjn
Basin 1 Basin 2 Basin 3
Receiving Stream UT to crab pt bay Crab Point Bay Crab Point Bay
River Basin WOK03 WOK03 WOK03
Index Number 21-30 21-30 21-30
Classification SA SA SA
IMPERVIOUS AREA CALCULATION Ce
Buildings 10152 0 0 1.00
Parking &Streets 0 31080 45738 0.98
Concrete&SW 15432 8111 5344 0.95
Other/Future 10732 3304 0 1.Q0
Nature Trail 0 0 0 0.50
TOTAL 36316 42495 51082 sf
not baseball field for drainage area 2 since no bua
VOLUME CALCULATION
Drainage Area = 75892 123343 114440 grf
% Impervious, I= 47.85% 34.45% 44.64%
Cc= 0.57 0.47 0.55
Rv= 0.48 0.36 0.45
SHWT Elev.= 5.0 5.0 5.0 fmsl
Infiltration Rate, In/hr= 5.3 3.5 3.5 inlhr
Bottom Elevation= 7 7 7 fmsl
Bottom Surface Area 3115 3115 6135 sf
Top/Storage Elevation = 9 9 9 frnsl
Top/Storage SA= 4565 4565 8078 sf
Design Storm = 1.5 1.5 1.5 in
Rational?Y or N N N N
Design Volume= 4560 5552 6462 cf
Total Volume Provided= 7680 7680 14213 cf
Storage met at elevation= 8.19 8.45 7.91 fmsl
Storage elevation (plans) = 8.26 8.50 7.98 fmsl
Time to Draw Down = 3.31 6.11 3.61 Ihrs.
25 YEAR 24 HOUR STORM Intensity, i,=8 inches/24 hour, in/hr.
Qr= C i A= 0.33 I 0.44 0.47 cfs
Qp thru bottom of basin= 0.38 I 0.25 j 0.50 ! ` J cfs
10 YEAR 10 MIN HIGH INTENSITY EVENT Intensity, i, =7 in/hr
Volume= 4190.32 I 5557.33 I 6033.08 I I I cfs
COMMENTS
Volume and drawdown are within Design Requirements.

Mdrehead City Baseball Park
Subject: Morehead City Baseball Park
From: "Vince Antrilli" <[e-mail]>
Date: Mon, 10 Dec 2007 08:58:23 -0500
To: "'Mary Jean Naugle' <[e-mail]>
Good morning Mary Jean,
I hope you had a great weekend. I just wanted to let you know that the
package for the above project was post marked on Friday and you should be
receiving it sometime today. Over the weekend I had the opportunity to type
up the RAI response letter and it is attached to this email. We have
addressed all the comments and believe the submission to be complete. We
have also reviewed the previous RAI letter sent by Linda Lewis so that there
were no items outstanding like the title of our client. The first letter
sent had mostly comments regarding the wet ponds. Since the design had to
change to infiltration basins, most of the comments regarding the wet ponds
became null and void. We however did look further into the client's title
and found that in fact it is correct as City Manager. Upon your review if
you should have any questions or would like to discuss the review or any
aspects of the design, please do not hesitate to contact me.
I want to assure you that all your comments in our phone conversations have
been taken to heart and we have worked diligently to incorporate all
comments and suggestions into the plans.
Have a great morning.
Vincent Antrilli, Jr.
EDA pa
4140 Parklake Ave. , Suite 300
Raleigh, N.C. 27612
919-781-1083 ph
919-906-6151 cell
<mailto:[e-mail]> [e-mail]
Content-Type: application/msword
INCDENR RAI Response 12 7-07.doc
Content-Encoding: base64
DEC `I 0 I007
Lie o 0ci , 3
BY:
1 of 1 12/10/2007 11:57 AM

pa
EDA north carolina
Architects■Engineers■Planners
December 7, 2007
Ms. Mary Jean Naugle
NCDENR Water Quality—Wilmington Regional Office
127 Cardinal Drive Ext.
Wilmington, NC 28405
Subject: Request for Additional Information
Stormwater Project No. SW8 070933
Morehead City Baseball Park
Carteret County
Dear Ms. Naugle:
In accordance with the recent staff request for additional information regarding the
stormwater permit for the above project, we are please to offer the following responses
to comments, questions, and requests to accompany the requested information and
revised plans and calculations. We cordially offer the following:
1. Please extend the trash rack over the face of the bypass weir opening on
each Drop Inlet Flow Splitter structure.
The trash rack has been extended to cover all openings in the splitter
box. A trash rack detail has also been added to the plans.
2. Please submit a completed infiltration basin supplement form for each
basin and a separate signed Operation and Maintenance document for
each basin.
Infiltration Basin Supplement forms for each basin have been
included with the resubmission as well as Signed Operation and
Maintenance Documents for each.
3. Please add a cross-section view of each infiltration basin area, including
the overflow swale, noting the 3:1 slope requirement, the basin bottom
elevation, the bypass elevation and the side slope vegetation.
A cross section of each infiltration basin has been added as well as
detail of the emergency overflow. The side slopes will be sodded
with turf grass.
4. Please provide dimensions and radii for the bottom contour of each basin.
Dimensions of the bottom of the infiltration basins have been added
to detail sheet C-18.
5. Please raise the emergency overflow elevation such that it is higher than
the bypass elevation.
Ra i h caflon: Jacksonville Location: o eaa Ulty Location:
41 Park ke Avenue 9011 Hargett Street 7 hep rd Street
g��� Epp tl�r2278557
Ralel h NC 27612 Jacksonville NC 28540 Phon ee91�2 Phon�:919.781.1083 Phon� 910.455.1¢20 Fax:252.24Fax:[phone] Fax: j0.455.161 a-mail:eeddamApa.com
e-mail:[e-mail] e-mail:[e-mail]

Ms.Mary Jean Naugle
SW Proj. SW8 070933
Dec.7,2007
The emergency bypass elevation of each basin has been revised
based on the revised calculations
6. Please label the vegetated filter on the plans and provide a detail.
The vegetated filter on the plans has been labeled. The Level
Spreader Detail shows the filter and proposed vegetation. Proposed
vegetation for the filter is turf grass in accordance with the BMP
Manual.
7. For projects within 1/2 mile of SA waters, the vegetated filter must be a
minimum of 50' long.
The vegetated filter has been revised to 50ft long.
8. Please add the level spreader detail to the plans, or incorporate it into the
vegetated filter detail.
The level spreader detail was already incorporated into the plans but
has been revised to further clarify the vegetated filter. Please see the
detail sheets.
9. Please add a flow distribution system within each basin, which will
distribute the incoming runoff evenly over the entire bottom surface area,
thereby preventing erosion and overuse of the infiltration area in the
immediate vicinity of the entrance.
A flow distribution system has been added to each basin and a detail
has been added to the plans in accordance with previous
correspondence with NCDENR review staff.
10. The bypass elevation noted on the bypass structure for Basin 3 is 7.50,
whereas the calculations indicate that the storage elevation (i.e., the
bypass elevation) is 8.95. Please correct and revise the Drop Inlet#4 Flow
Splitter detail.
The splitter box for each basin has been modified as well as the
bypass and emergency overflow channel. Please refer to the revised
calculations submitted and elevations on the plans.
11. Due to the insufficiency of this application, please submit a non-refundable
$1000.00 additional information fee.
Enclosed in the resubmission package is the additional information
fee of$1000.00.

Ms.Mary Jean Naugle
SW Proj.SW8 070933
Dec.7,2007
Past review outstanding comments.
12. Your title on the application is shown as City Manager, however,
Morehead City is a town, not a city. Should this be revised to Town
Manager?
The title on the application is correct as verified by Mr. Martin. We
have enclosed a new application with updated information due to the
changes requested by staff.
We trust that the revised information meets your needs. We are appreciative of
your patience and cooperation with regard to the review of this project given its history.
Every effort has been made to satisfy staff concerns and meet state water quality
standards. We look forward to continuing to work closely with staff on this and future
projects.
Sincerely,
Vincent Antrilli, Jr, EDA
Cc : Randy Martin, City Manager

Morehead City Baseball Park
Water Management and Erosion Control Permits
Engineering Report
Revisions
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Raleigh,N.C.27613

Morehead City Baseball Park
Water Management Narrative
Project Description
The proposed project includes the development of a baseball field, stadium
seating, concession building, restroom buildings, maintenance buildings, other building
associated with baseball operations,parking areas,pedestrian walkways, and drainage
bmp areas on a 12.71 acre site. The site in located approximately 1.15 miles north of the
intersection of US Route 70 and N 20th Street then West approximately 1000 feet on
Mayberry Loop Road to the site on the south side of Mayberry Loop Road.
Existing Site Characteristics
The existing site is predominantly wooded with several small pockets of wetlands
totaling approximately 1.87 acres. 0.5 acres of wetlands will be impacted by the proposed
development and has been permitted through the Division of Water Quality and US
Army Corps of Engineers (copy enclosed). The site is relatively level with runoff flowing
generally to the north being intercepted by onsite ditches which carry the runoff to
Mayberry Loop Road where it flows east along the roadside ditch and through a series of
culverts to an eventual outfall into Crab Point Bay.
Proposed Site Drainage Characteristics
The site is divided into three drainage areas. Drainage Area 1 collects storm water
runoff in drainage inlets and conveys the water to the flow splitter box which diverts the
runoff first to the BMP Basin then the overflow swale once the BMP Basin has reached
the design water quality depth. The overflow bypass swale connects to a Level Spreader
and 50ft vegetated filter strip prior to flowing to the wetlands.
Drainage Area 2 includes the baseball field which does not require treatment
through the BMP device and therefore is designed to collect runoff through the
underdrain system and bubble out through a drop inlet beyond the outfield fence. The
runoff then fmds it way via sheet flow to the wetlands. The remainder of Basin 2 is
collected in drainage inlets and swales to convey the run off to the flow splitter box
which diverts the runoff first to the BMP Basin then the overflow swale once the BMP
Basin has reached the design water quality depth. Despite the baseball field being
separated for water quality calculation purposes,the peak pre and post condition flow
calculations reflect the entire Drainage Basin Area.
Drainage Basin 3 has been separated into 2 areas. Drainage Area 3a is comprised
primarily of improvement whereas Area 3b is comprised of wetland and wooded areas
that do not require treatment through the BMP. Since area 3b does not have any proposed
improvements the pre and post runoff conditions are the same and are no included in the
Peak Runoff calculations. By separating Drainage Area 3 into 2 subareas we can more
accurately determine the percentage impervious and treatment requirements of the
improvements.

BMP Devices
The proposed drainage system incorporates Infiltration Basins as the BMP
devices for treatment credit. The Basins are designed to infiltrate the required treatment
volume within 5 days. Each BMP will handle less than the maximum 2 ac-in of runoff.
Erosion Control Devices
Several erosions control devices are used through out the site. A gravel
construction entrance and a temporary wash down area are located at the entrance to the
site for construction vehicles entering and leaving the site. Straw wattles are located
along the limits of disturbance. Straw wattles are also located along wetland areas and
undisturbed site areas. Straw blankets will be used on all slopes of 3:1 or steeper. Inlets
shall be protected and paved areas will be swept regularly. Upon completion of
construction the temporary erosion control devices will be removed.

CONSTRUCTION SEQUENCE
1. OBTAIN SOIL EROSION AND SEDIMENTATION CONTROL PLAN APPROVAL AND OBTAIN
GRADING PERMIT FROM THE DIVISION OF ENVIRONMENT, HEALTH, AND NATURAL
RESOURCES (DEHNR).
2. ESTABLISH LIMITS AND EXTENT OF LAND DISTURBING ACTIVITY.
3. HOLD PRE CONSTRUCTION CONFERENCE WITH THE OWNER'S REPRESENTATIVE, THE
GRADING CONTRACTOR, THE UTILITY CONTRACTOR, AND THE DEHNR EROSION CONTROL
INSPECTOR.
4. INSTALL CONSTRUCTION ENTRANCE/EXIT AS SHOWN ON THE APPROVED PLAN.
5. BEGIN CLEARING AND GRUBBING.
6. ROUGH GRADE ROAD AND EXCAVATE REMAINING SWALES ALONG WITH REMAINING
REQUIRED SOIL EROSION AND SEDIMENTATION CONTROL MEASURES SHOWN ON THE
APPROVED PLANS.
7. BEGIN AND COMPLETE ROADWAY CONSTRUCTION.
8. STABILIZE SITE AS AREAS ARE BROUGHT UP TO FINISH GRADE WITH THE APPROVED
SEEDING MIXTURE.
9. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE INSPECTED FOR STABILITY
AND OPERATION FOLLOWING EVERY RUN-OFF PRODUCING RAINFALL. ALL REQUIRED
REPAIRS WILL BE MADE IMMEDIATELY TO MAINTAIN ALL PRACTICES AS DESIGNED.
10. ONCE VEGETATION IS ESTABLISHED, REMOVE ALL TEMPORARY SOIL EROSION AND
SEDIMENTATION CONTROL MEASURES.

Design Assurance
Upon completion of the construction and stabilization of the site, the drainage
system will be inspected to assure that it is installed in accordance with all design
specifications. An inspection will take place once the system is placed into
operation.
Easements and Deed Restrictions
Upon approval of the construction plans, an easement sketch and description will
be prepared and filed for each of the BMP's located on the proposed site. All
easements will also provide for legal access from public ROW. Deed restrictions
are not necessary as the property is sole owned by a public entity and not
subject to Home Owners Associations. The aforementioned easement document
will dictate restrictions placed on the included areas.

Peak Runoff Calculations
The Rational Method is used to calculate Peak Runoff. Q=C*I *A
1 Site Data
Total Site Area: 553561 sf 12.71 ac
Total Site Drainage Area: 427323 sf 9.81 ac
Drainage Area 1 (DA-1) 75892 sf 1.74 ac
Drainage Area 2 (DA-2) 249581 sf 5.73 ac
Without Baseball Field 123343 sf 2.83 ac
Drainage Area 3a (DA-3a) 114440 sf 2.63 ac
Area 3b (DA-3b) 113648 sf 2.61 ac
Rainfall Estimates in inches(per NOAA)
24hr Event
Years Intensity Depth
1 0.15 in/hr 3.66 in
5 0.24 in/hr 5.77 in
10 0.29 in/hr 6.87 in
2 Pre-Development Runoff
Drainage Area 1 (DA-1)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 1.74 ac
Wooded Area: 91% 1.59 ac 0.15
Grassed Area: 0% 0.00 ac 0.20
Wetland Area: 9% 0.16 ac 0.30
Weighted C= 0.16
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate(Q) Runoff Volume(Q)
1 0.15 0.04 cfs 3692 cf
5 0.24 0.07 cfs 5907 cf
10 0.29 0.08 cfs 7137 cf
Post Development Runoff
Drainage Area 1 (DA-1)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 1.74
Impervious Area: 0.83 0.95
Baseball Field 0.00 0.70
Boardwalk Nature Trail 0.00 0.85
Wetlands: 0.12 0.30
Wooded Area: 0.04 0.15
Wet Pond: 0.00 0.95
Grassed Area: 0.76 0.20
Weighted C = 0.57
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate(Q) Runoff Volume(Q)
1 0.15 0.15 cfs 12758 cf
5 0.24 0.24 cfs 20412 cf
10 0.29 0.29 cfs 24665 cf

Pre-Development Runoff
Drainage Area 2(DA-2)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 5.73 ac
Wooded Area: 80% 4.58 ac 0.15
Grassed Area: 5% 0.29 ac 0.20
Wetiand Area: 12% 0.66 0.30
Weighted C= 0.16
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate (Q) Runoff Volume (Q)
1 0.15 0.14 cfs 12219 cf
5 0.24 0.23 cfs 19551 cf
10 0.29 0.27 cfs 23624 cf
Post Development Runoff
Drainage Area 2(DA-2)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 5.73 ac
Impervious Area: 0.98 ac 0.95
Baseball Field 0.00 ac 0.45
Boardwalk Nature Trail 0.02 ac 0.60
Wetlands: 0.15 ac 0.30
Wooded Area: 0.11 ac 0.15
Wet Pond: 0.00 ac 0.95
Grassed Area: 1.57 ac 0.20
Weighted C= 0.23
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate(Q) Runoff Volume(Q)
1 0.15 0.20 cfs 17057 cf
5 0.24 0.32 cfs 27291 cf
10 0.29 0.$8 cfs 32977 cf

Pre-Development Runoff
Drainage Area 3(DA-3)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 2.63 ac
Wooded Area: 80% 2.10 ac 0.15
Grassed Area: 5% 0.13 ac 0.20
Wetland Area: 41% 1.09 0.30
Weighted C= 0.25
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate(Q) Runoff Volume(Q)
1 0.15 0.10 cfs 8648 cf
5 0.24 0.16 cfs 13837 cf
10 0.29 0.19 cfs 16720 cf
Post Development Runoff
Drainage Area 3(DA-3)
Runoff Coefficient Area (A) C
Total Site Drainage Area: 2.63 ac
Impervious Area: 1.17 ac 0.95
Baseball Field 0 ac 0.70
Boardwalk Nature Trail 0.02 ac 0.85
Wetlands: 0.11 ac 0.30
Wooded Area: 0.35 ac 0.15
Wet Pond: 0.00 ac 0.95
Grassed Area: 0.97 ac 0.20
Weighted C= 0.54
Runoff Calculation
Site Drainage Area x C x Rainfall
24hr
Years Event(i) Runoff Rate (Q) Runoff Volume(Q)
1 0.15 0.21 cfs 18310 cf
5 0.24 0.34 cfs 29296 cf
10 0.29 0.41 cfs 35399 cf

Water Quality Calculations
1 Site Data /%
?\
Total Site Area: 12.71 ac 553561 sf Total Site Drainage Area: 9.81 ac* 427323 sf* �-
- /*
* (Baseball Field not included) \ 111:
Impervious Area: 30.4% 2.98 ac 129893 sf ':
Wetlands: 3.9% 0.39 ac 16774 sf . �
Wooded Area: 5.0% 0.49 ac 21519 sf :
Grassed Area: 60.6% 5.95 ac 259137 sf
SC
Determination of Total Project Size using Method 1 /Method 2 calculations.
Method 1:
0.39 ac Wetlands/9.81 ac Site= 4%
9.81 ac site-0.39 ac wetland = 9.42 ac uplands
Project area for calculating density= 9.42/0.75= 12.57 acres
Method 2:
9.81 -0.39=9.42
Project area for calculating density= 9.42+0.39 =9.81 acres
Since the wetlands are less than 25%of the site area, the whole site will
be used to calculate the allowable density.
2 Drainage Areas
Drainage Area 1 (DA-1) 75892 sf 1.74 ac
Impervious 36316 sf 48%
Drainage Area 2 (DA-2) 123343 sf 2.83 ac (248581 sf with Baseball Field Included)
Impervious 42495 sf 34%
Baseball Field 125238 sf
Drainage Area 3a (DA-3a) 114440 sf 2.63 ac
Impervious 51082 sf 45%
Drainage Area 3b (DA-3b) 113648 sf 2.61 ac
Impervious 0.03817 sf 0%
3 Temporary Storage Calculation
Since this project drains to: Crab Point Bay
with a Classification of: SA; HQW
Treatment Requirement is: 1.5 inches

Drainage Area 1 (DA-1)
Simple Method Volume Calculation
Rv=0.05+0.9 x la Infiltration Area Stage Storage Table
Rv= 0.481 Rd = 1.5
V=3630 x Rd x Rv x A Main Bay
V= 4560 cf (1.26 ac-in) I Elev Area (sf) Incremental Cumulative
L Volume(cf) Volume(cf)
Basin Area Sizing
A = V/2xKxT 9.0 4565 4188 7650
Infiltration Rate(K)= 5 in/hr 8.0 3810 3463 3463
Dewatering Time(T)= 2.00 days 7.0 3115 0
Min. Basin Area= 227.99 sf
Storage Occurs at El= 8.26
Basin Area Provided= 3115 sf
Actual Dewatering Time= 0.15 days INotI S.
T=(Ax2xK)/V
Drainage Area 2(DA-2)
Simple Method
Rv=0.05+0.9xla
Rv= 0.360 Rd= 1.5 Infiltration Area Stage Storage Table
V=3630 x Rd x Rv x A
V= 5552 cf (1.53 ac-in) Main Bay
Elev Area (sf) Incremental Cumulative
Basin Area Sizing Volume(cf) Volume (cf)
A = V/2xKxT �, 4
Infiltration Rate(K) = 3.5 in/hr 9.0 4565 4188 7650
Dewatering Time(T) = 2.00 days 8.0 3810 3463 3463
Min. Basin Area= 396.54 sf 7.0 3115 0
Basin Area Provided = 3115 sf Storage Occurs at El= 8.50
Actual Dewatering Time= 0.25 days " 6 14 aur5
T= (Ax2xK)/V
Note: The baseball field does not require treatment through the BMP and therefore will be routed directly a swale
conveying the runoff to the Level Spreader.All other built upon areas are directed to an Infiltration BMP.
Volume Calculations reflect Drainage Area 2 without the Baseball Field inlcuded to use a more accurate%impervious.
Drainage Area 3a(DA-3a)
Simple Method Volume Calculation
Rv=0.05+0.9 x/a Infiltration Area Stage Storage Table
Rv= 0.452 Rd= 1.5
V=3630 x Rd x Rv x A Main Bay
V= 6462 cf (1.78 ac-in) Elev Area (sf) Incremental Cumulative
I Volume(cf) Volume (cf)
Basin Area Sizing
A = V/2xKxT 9.0 8078 7578 14185
Infiltration Rate(K)= 3.5 in/hr 8.0 7078 6607 6607
Dewatering Time (T)= 2.00 days I 7.0 I 6135 01
Min. Basin Area= 461.57 sf
Storage Occurs at El= 7.98
Basin Area Provided= 6135 sf
Actual Dewatering Time= 0.15 days
T= (Ax2xK)/V
Note: Drainage Area 3b does not convey runoff into the system and is comprised of wetlands and wooded area and has been
separated from Drainage Area 3a to calculate a more accurate percentage impervious coverage for BMP treament.

• r
aiinimia
W.1
ECS Carolinas,LLP
p Geotechnical•Construction Materials •Environmental
NIMINIM
CAROLINAS
August 20,2007
Mr.Lee Dixon � � n�� ,�
EDA forehead
1007 Shepard Street
Morehead City,North Carolina 28557 AUG 2 2 200 2
Re: Infiltration Evaluation
Morehead City Baseball Park ,. _ 1. J
Morehead City,North Carolina
ECS Project No.22.13259
Dear Mr.Dixon,
ECS Carolinas, LLP (ECS) recently conducted an infiltration evaluation for the proposed
infiltration areas at the above referenced site off of Mayberry Loop Road in Morehead City,
North Carolina. This letter,with attachments,is the report of our evaluation.
Field Testing
On August 21, 2007 ECS conducted an exploration of the subsurface soil and ground water
conditions at four requested locations shown on the attached Site Diagram. The purpose of this
exploration was to obtain subsurface information of the suitability of the in-place soils for the
proposed infiltration area. We explored the subsurface soil and ground water conditions by
advancing one hand auger boring into the existing ground surface at the four requested boring
locations. We visually classified the subsurface soils and obtained representative samples of
each soil type encountered. We also recorded the ground water level observed at the time of
each hand auger boring. The attached Infiltration Evaluation Form provides a summary of the
subsurface conditions encountered at each hand auger boring location.
The ground water level and the seasonal high ground water level (SHWL) were estimated at
each boring location below the existing grade elevation. Below is a summary of each boring
location.
Location Water Level SHWL
SB-1 48 inches 24 inches
SB-2 ______ 46 inches 24 inches
_ SB-3 48 inches 24 inches
SB-4 W_ 48 inches 24 inches
We have conducted four infiltration tests near the hand auger borings to estimate the infiltration
rate for the subsurface soils. The infiltration tests are typically conducted at two feet above the
SHWL.
7211 Ogden Business Park•Suite 201 •Wilmington, NC 28411 •[phone]•Fax[phone]

Infiltration Evaluation
Morehead City Baseball Park
Morehead City,North Carolina
ECS Project No.22.13239
•
Field Test Results
Below is a summary of the infiltration test results:
Location Description Depth Inches/hour Inches/minute
1 Grey fine SAND 10 inches 5.6 0.09
w/silt
2 Grey fine SAND 10 inches 5� 0.09
w/silt �....
3 Grey fine SAND 10 inches 3.5-) 0.06 --
w/sift C
4 Grey fine SAND 10 inches 4.5 0.07
w/silt
Infiltration rates and SHWL may vary within the proposed site due to changes in elevation and
subsurface conditions.
If you have any questions regarding this report,please contact us at(910)686-9114.
Respectfully,
ECS CAROLINAS,LLF
ki6tra64'11/./*
Wil 114
K.Brooks Wall Walid l
Sobh,P.
Staff Geologist Principal Engineer
NC License No.22983
Attachments: Site Diagram
Infiltration Evaluation

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Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
August 20, 2007
Location Depth Soil Description
SB-I 0-12" Grey fine SAND w/silt
12"-18" Tan fine SAND
18"-28" Black silty SAND'}�w/stumps
28"-48" Grey clayey SAND
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute(5.6 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation.
Location Depth Soil Description
SB-2 0-10" Peat
10"-24" Grey fine SAND w/silt
24"-8" Grey sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute(5.3 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 46 inches below the existing grade elevation.
Location Depth Soil Description
SB-3 0-4" Peat
4"-12" Grey fine SAND w/silt
12"-48" Grey/tan sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.06 inches per minute (3.5 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation

Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
August 20, 2007
Location Denth Soil Description
SB-4 0-3" Peat
3"-10" Grey fine SAND w/ silt
10"-50" Grey/tan sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.07 inches per minute (4.5 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation

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SOIL CONSERVATION SERVICE
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Precipitation Frequency Data Server Page 1 of 4
tz, . POINT PRECIPITATIONon
rt
FREQUENCY ESTIMATES
FROM NOAA ATLAS 14
North Carolina 34.7392 N 76.7346 W 9 feet
from"Precipitation-Frequency Atlas of the United States"NOAA Atlas 14,Volume 2,Version 3
G.M.Bonnin,D.Martin,B.Lin,T.Parzybolc,M.Yekta,and D.Riley
NOAA,National Weather Service,Silver Spring,Maryland,2004
_ Extracted:Mon Dec 3 2007
VIIIINIIIINININI�pIN" II NII�yN{✓NI�WVl�IININININI�''I MINININI .uy�IW,I I�yI,, "IINIII'`j IIIIIINIIII IN✓�J�I�I�I�IIII�I�JI�yI�ININININ;� 'INININI. �yI�pILVI;: NIIIINNI'�I�{NIN 111 IIIII ;;;;" IIIININININNI'111 1 NINi'1I11111N'•dNl nmmilnmWl,„INIIII I N� i IIIIII I .
",� I I�I I OINIGI� :lneumm �t1N�1d�o1�if, nlmmrr.,��dq�mjmnmmmm�mmmmmemlmalmnlmmm�luminRy�, lnmit1i{tNInIMmnlnn'y'u;'::: i ::: ,;^ � � n �;�:�
uimwn m ��fAlA1A1AlA111111AfAlAIAIAIII
Precipitation Intensity Estimates (in/hr)
ARI* 5 10. 15 30 60 120 3 6 12 24 48 4 7 10 20 30 45 60
(years) min min min min min min hr hr hr hr hr day day day day day day day
1 5.75 4.60 3.83 2.62 1.64 1.02 0.74 0.45 0.26 0.15 0.09 0.05 0.03 0.03 0.02 0.01 0.01 0.01
2 6.78 5.42 4.54 3.14 1.97 1.24 0.89 0.54 0.32 0.19 0.11 0.06 0.04 0.03 0.02 0.02 0.01 0.01
5 7.92 6.34 ,® 3.80 2.44 1.57 1.14 0.69 0.41 0.24 0.14 0.08 0.05 0.04 0.03 0.02 0.02 0.02
10 8.86 7.07 5.97 4.32 2.81 1.86 1.35 0.82 0.49 0.29 0.16 0.09 0.06 0.05 0.03 0.02 0.02 0.02
25 10.00 7.96 6.73 4.98 3.32 2.25 1.65 1.01 0.61 0.35 0.20 0.11 0.07 0.05 0.03 0.03 0.02 0.02
50 10.88 8.67 7.32 5.51 3.73 2.57 1.92 1.17 0.71 0.41 0.24 0.13 0.08 0.06 0.04 0.03 0.03 0.02
100 11.78 9.36 7.88 6.04 4.16 2.92 2.20 1.35 0.82 0.48 0.27 0.15 0.09 0.07 0.04 0.03 0.03 0.02
200 12.66 10.03 n 6.57 4.61 3.30 2.51 1.55 0.95 0.55 0.32 0.17 0.10 0.08 0.05 0.04 0.03 0.03
500 13.80110.92 9.16 7.29 5.23 3.83 2.97 1.84 1.14 0.65 0.38 0.19 0.12 0.09 0.06 0.04 0.03 0.03
1000 14.75 11.62 9.72 7.87 5.75 4.27 3.36 2.09 1.30 0.74 0.44 0.22 0.13 0.10 0.06 0.04 0.04 0.03
onusp I tmtt ii 6mL,I�um a L uW_ mmmmm These
r eperec tpoii aeo ceuqmeenntcayti oesn tifomra mteor ea rinef obasmeonn.a OaTrtiEalF doumraatitotinn s efrioreces,s A esRIti imas the A nveaerazeer oR etoc uarrppenecear asInt ezrevroal.
http://dipper.nws.noaa.gov/cgi-bin/hdsc/buildout.perl?type=idf&units=us&series=pd&statename=NOR... 12./3/2007

Precipitation Frequency Data Server Page 1 of 5
POINT PRECIPITATION -Qf,�
FREQUENCY ESTIMATES I
FROM NOAA ATLAS 14 ,
North Carolina 34.7392 N 76.7346 W 9 feet
from"Precipitation-Frequency Atlas of the United States"NOAA Atlas 14,Volume 2,Version 3
G.M.Bonnin,D.Martin,B.Lin,T.Parzybok,M.Yekta,and D.Riley
NOAA,National Weather Service,Silver Spring,Iviaryland,2004
Extracted:Mon Dec 3 2007
IxryININIIIINNI�1N y. Nq �V III INI INININININ;; �NININII NI I NU IUINIP IIININIIIIN II IN � NINININ' SININNI. III.. NININIII'�`;ill°II„ N,, ,���Ap�l�. ';;;;y�IA°yAAI°"g' @,,,;'�;�y��i+yp�N�alliplNnn;�;N;,�'�7NNNIyIIIIpIINI�xi;;!}'ININII ,�IIIIINI�I�y{I
Ay�AA9 ey',,ly' yL �yy ��yJJ"A�+j�l�Oili �yI$0I yy����,,]IA1I�' �;yy ic�'IAw �++�yx; id1li....,.�. .tO1....... I A11AliM� Anl� I A A1MA I M�/�TSR�71�fiA�A��d�I j 1•�..:IY/A�
_,;!AIAIAIIlAll111, PNIIIID�N'I All AAIAIIAA A�. INIIAIII��II�;xIAIAIA � �IIAIIIIA IIII A'I IAIAIA'!II�T�"�INIAIAI�IIA IrIIIrIIIIiI lA1111f'11f AlAlflM yloRy'AIA1AIdfl11A1�1� �AlAIR1!'�I�F��IMIAPo111NIAINIIIIAIAIAIAIAfAIAlAfA1�;,�m'I�mm'�'��+m"nu�mnm ��ILininminmwnnixmr�I���I1A{AfAIMIIli11A91flAlAtAI�
Precipitation Frequency Estimates(inches)
ARP 5 10 15 30 60 120 3 6 12 24 48 4 7 10 20 30 45 60
(years) min min min min min min hr hr hr hr hr day day day day day day day
1 0.48 0.77 0.96 1.31 1.64 2.04 2.21 2.67 3.17 3.66 4.22 4.79 5.53 6.30 8.48 10.41 12.95 15.78
2 0.56 0.90 1.14 1.57 1.97 2.48 2.68 3.24 3.86 4.46 5.12 5.81 6.66 7.54 10.10 12.38 15.32 18.63
5 0.66 1.06 1.34 1.90 2.44 3.15 3.42 4.13 4.94 5.77 6.57 7.39 8.37 9.35 12.28 14.88 18.31 22.01
10 0.74 1.18 1.49 2.16 2.81 ® 4.06 4.92 5.92 6.87 7.83 8.70 9.78 10.84 14.07 16.90 20.78[24.73j
25 0.83 ® 1.68 2.49 ® 4.49 4.97 6.04 7.32 8.50 9.71 10.60 11.81 12.98 16.60 19.68 24.25 28.45
50 0.91 1.45 1.83 2.75 ® 5.14 5.76 7.02 8.56 9.90 11.34 12.21 13.50 14.74 18.68 21.89 27.07 31.36
100 0.98 1.56 1.97 3.02 4.16 5.84 6.62 8.10 9.92 11.44 13.17 13.95 15.32 16.64 20.86 24.15 30.00 34.35
200 1.05 1.67 ® 3.29 4.61 6.59 7.55 9.27 11.44 13.13 15.21 15.85 17.28 18.66 23.16 26.49 33.08 37.37
500 1.15 1.82 2.29 3.65 ® 7.66 8.91 11.00 13.69 15.68 18.29 18.67 20.09 21.55 26.41 29.68 37.35 41.46
1000 ® 1.94 2.43 3.94 ® 8.54 10.09 12.49 15.67 17.85 20.95 21.27 22.45 23.95 29.04 32.18 40.77 44.62
fryININININIIIIN I II nog "These precipitation frequency estimates are based on a partial duration series.ARI is the Average Recurrence Interval.
JIGINIICIM��III�fllldllNN Please refer to the documentation for more information.NOTE:Formatting forces estimates near zero to appear as zero.
http://dipper.nws.noaa.gov/cgi-bin/hdsc/buildout.perl?type=pf&units=us&series=pd&statename=NORM'... 12/3/2007

0,\(1fAT�R Michael F Easley,Governor
OC' QG William G Ross 1r.Secretary
rNorth Carolina Department of Environment and Natural Resources
? =! Coleen H Sullins,Director
Q '� Division of Water Quality
June 27,2007
DWQ Project#07 0642
Carteret County
Randy Martin,City Manager
Town of'Morehead City
PO Box M
Morehead City,NC 28557
Subject Property: Morehead City Baseball Park
Approval of 401 Water Quality Certification with Additional Conditions
Dear Mr.Martin:
You have our approval,in accordance.with the attached conditions and those listed below,to permanently
impact 0.5 acres of jurisdictional Wetlands for the purpose of constructing a public baseball park with
associated concessions,seating,restr'ooms and parking,as described within your application dated April 6,
2007 and received by the Wilmington Regional office on April 6,2007 and additional information
received on June 22,2007 After reviewing your application,it has been determined that the impacts are
covered by General Water Quality Certification Number(s)3631 (GC3631) the Certification(s)allows
you to use Nationwide Permit 39 when issued by the US Army Corps of Engineers(USACE)., In
addition,you should obtain or otherwise comply with any other required federal,state or local permits
before you go ahead with your project including(but not limited to)Erosion and Sediment Control,Non-
discharge,and stormwater regulations. Also,this approval to proceed with your proposed impacts or to
conduct impacts to waters as depicted in your application shall expire upon expiration of the 404 or
CAMA Permit
Ihis approval is for the purpose and design that you described in your application. If you change your
project,you must notify us and you may be required to send us a new application If the property is sold,
the new owner must be given a copy of this Certification and approval letter and is thereby responsible for
complying with all conditions. If'total fills for this project(now or in the future)exceed one acre of
wetland or 150 linear feet of stream,compensatory mitigation may be required as described in 15A NCAC
2.H .0506(h) Ihis approval requires you to follow the conditions listed in the attached certification and
any additional conditions listed below
The Additional Conditions of the Certification are:
1 Impacts Approved
The following impacts are hereby approved as long as all of the other specific and general
conditions of this Certification(or Isolated Wetland Permit)are met. No other impacts are
approved including incidental impacts:
! Amount Approved(Units) Plan Location or Reference
Stream N/A(feet)
404/401 Wetlands . 0.5 acres Sheet C-2
•
Waters , N/A(acres) a c�rt� na
I
JViz&rauyNorth Carolina Division of Water Quality 1617 Mail Service CenterRaleigh.NC 27699 1617 Phone[phone]S Customer Service
Internet: www nywaternualitviu$ Location: 512 N Salisbury St Raleigh NC 27604 Fax [phone] 1.877-623-6748
An Equal Opportunity/Affirmative Action Employer-50%Recycled110%Post Consumer Paper
!.

Page Iwo •
Randy Martin,City Manager
Town of Morehead City
DWQ#07-0642
June 27,2007
2 Sedimentation and Erosion Control
Erosion and sediment control practices must be in full compliance with all specifications
governing the proper design,installation and operation and maintenance of such Best
Management Practices in order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed,installed,
operated,and maintained in accordance with the most recent version of the North Carolina
Sediment and Erosion Control Planning arid Design Manual.
b. The design,installation,operation,and maintenance of the sediment and erosion control .
measures must be such that they equal,or exceed,the requirements specified in the most
recent version of the North Carolina Sediment and Erosion Control Manual The devices
shall be maintained on all construction sites,borrow sites,and waste pile(spoil)projects,
including contractor-owned or leased borrow pits associated with the project.
• c For borrow pit sites,the erosion and sediment control measures must be designed,installed,
operated,and maintained in accordance with the most recent version of the North Carolina
:�'�"' Surface Mining Manual
d The reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act.
3- No Waste,Spoil,Solids,or Fill of Any Kind
No waste,spoil,solids,or fill of any kind shall occur in wetlands,waters,or riparian areas beyond
the footprint of the impacts depicted in the Pre-Construction Notification.. All construction
activities,including the design,installation,'operation,and maintenance of sediment and erosion
`4 ` `• • • control Best Management Practices,shall be performed so that no violations of state water-
,
':-` •
` .quality standards,statutes,or rules occur
4. No Sediment&Erosion Control Measures win Wetlands or.Waters •
•
Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum
extent practicable If placement of sediment and erosion control devices in wetlands and waters
is unavoidable,they shall be removed and the natural grade restored within six months of the date
that the Division of Land Resources has released the project.
• 5 Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable
Buffer Rules,and any subsequent modifications,the applicant is required to return the attached
certificate of completion to the 401/Wetlands Unit,North Carolina Division of Water Quality,
1650 Mail Service Center,Raleigh,NC,27699-1650
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. The authorization to proceed with your proposed impacts or.to conduct
impacts to waters as depicted in your application and as authorized by this Certification shall expire upon
expiration of the 404 or CAMA Permit.

•
Page Three
Randy Martin,City Manager
Town of Morehead City
DWQ#07-0642
June 27,2007
If you do not accept any of the conditions of this Certification(associated with the approved wetland or
sti earn impacts),you may ask for an adjudicatory healing. You must act within 60 days of the date that
you receive this letter To ask for a hearing,seed a written petition,which conforms to Chapter 150B of
the North Carolina General Statutes to the Office of Administrative Hearings,67I4 Mail Service Center,
Raleigh,N.0 27699-6714. Ihis certification and its conditions are final and binding unless you ask for a
hearing
Ihis letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act If you have any questions,please telephone Cyndi Karoly in the Central Office in Raleigh at 919-
733-9721 or Joanne Steenhuis in the DWQ Wilmington Regional Office at 910-796-7215
Sincer ,
iv
r4eec.C.:-;
Coleen H Sullins,Director
Division of Water Quality
Enclosures: GC 3631
Certificate of Completion
cc: Kim Williams—Land Management Group
Ian McMillan-DWQ 401 Oversight Unit,Raleigh
Micky Sugg-USACE Wilmington Regulatory Field Office
Stephen Rynas,DCM Morehead City
Central Files
WiRO

i
i
i
I
i
i

U.S.ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICI
Action ID. 2007-00683-016 County: Carteret USGS Quad: Beaufort
GENERAL PERMIT(REGIONAL AND NATIONWIDE)VERIFICATION
Property Owner. Town of Morehead City do:Mr.Randy Martin(City Manager)
Post Office Box M,Morehead City NC 28557
[phone]
Agent:Land Management Group.Inc.c/o:Ms.Kim Williams,Post Office Box 2522,Wilmington NC 28402 (9101 1
452-0001
Size and location of property(water body,road name/number,town,etc): The project site is located at Morehead
City Baseball Park on Mayberry Loop Road(SR 1179),off 201h Street,adjacent to unnamed tributary to Crab
Point Bay,in Morehead City,Car teret County,North Carolina.
Description of activity: Authorization to discharge fill material into 0.5 acre of Section 404 wetlands and waters for
the construction of a baseball field,as depicted in your April 6,2007 application and plans. Please be reminded
that you must notify our office if your plans change or are modified!
Applicable Law: X Section 404(Clean Water Act,33 USC 1344)
❑ Section 10(Rivers and Harbors Act,33 USC 403)
Authorization: Regional General Permit Number:
Nationwide Permit Number: Nationwide Permit No.39.See attached Special Conditions 1-5,concerning
the Implementation of the conservation easement for 0.91 acres of wetlands and waters and payment to NC Ecosystem
Enhancement Program to compensate for the 0.5 acres of wetland impacts.
Your work is authorized by the above referenced permit provided it is accomplished in strict accordance with the attached
conditions and your submitted plans. Any violation of the attached conditions or deviation from your submitted plans may subject the
permittee to a stop work order,a restoration order and/or appropriate legal action.
This verification will remain valid until the expiration date identified below unless the nationwide authorization is modified,
suspended or revoked. If, prior to the expiration date identified below, the nationwide permit authorization is reissued and/or
modified,this verification will remain valid until the expiration date identified below,provided it complies with all requirements of
the modified nationwide permit If the nationwide permit authorization expires or is suspended,revoked,or is modified,such that the
activity would no longer comply with the terms and conditions of the nationwide permit,activities which have commenced(ie.,are
under construction)or are under contract to commence in reliance upon the nationwide permit,will remain authorized provided the
activity is completed within twelve months of the date of the nationwide permit's expiration, modification or revocation, unless
idiscretionary authority has been exercised on a case-by-case basis to modify,suspend or revoke the authorization.
M Activities subject to Section 404(as indicated above)may also require an individual Section 401 Water Quality Certification. You
should contact the NC Division of Water Quality(telephone[phone])to determine Section 401 requirements_
For activities occurring within the twenty coastal counties subject to regulation under the Coastal Area Management Act(CAMA),
prior to beginning work you must contact the N.0 Division of Coastal Management_
This Department of the Army verification does not relieve the permittee of the responsibility to obtain any other required Federal,
State or local approvals/permits
If there are any questions regarding this verification,any of the conditions of the Permit,or the Corps of Engineers regulatory
program,please contact me at(910)251-4811.
1 Corps Regulatory Official Mickey Sung a Date: June 27,2007
Expiration Date of Verification: June 27.2009
Page 1 of 2

Determination of Jurisdiction:
❑ Based on preliminary information,there appear to be waters of the US including wetlands within the above described project area_
This preliminary determination is not an appealable action under the Regulatory Program Administrative Appeal Process
(Reference 33 CFR Part 331)
❑ There are Navigable Waters of the United States within the above described project area subject to the permit requirements of
Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act Unless there is a change in the law or our
published regulations,this determination may be relied upon for a period not to exceed five years from the date of this
notification.
❑ Ihere are waters of the US and/or wetlands within the above described project area subject to the permit requirements of Section
404 of the Clean Water Act(CWA)(33 USC§ 1344) Unless there is a change in the law or our published regulations,this
determination may be relied upon for a period not to exceed five years from the date of this notification.
X The jurisdictional areas within the above described project area have been identified under a previous action. Please reference
jurisdictional determination issued June 29,2005 Action ID 200500260.
Basis of Jurisdictional Determination: The wetlands and waters are adiacent to an unnamed tributary of'Crab Point Bay,a
Section 10 navigable water.
Corps Regulatory Official: . Mickey Sung
Date June 27,2007 /
SURVEY PLAIS,FIELD SKEICH,WETLAND DELINEATION FORMS,PROJECT PLANS,EIC.,MUSI BE
AI TACHED TO IHE FILE COPY OF IHIS FORM,IF REQUIRED OR AVAILABLE.
Copy Furnished by e-mail:
Joanned Steenhuis,NCDWQ
1
Page 2 of 2

Action ID Number: 2007-00683-016 County: Carteret
Permittee: Town of Morehead City c/o:Randy Martin(City Manager)
Date Permit Issued: June 27.2007
Project Manager: Mickey Sugg
Upon completion of the activity authorized by this permit and any mitigation required by the permit,
sign this certification and return it to the following address:
US ARMY CORPS OF ENGINEERS
WILMINGTON DISTRICT
WILMINGTON REGULATORY FIELD OFFICE
POST OFFICE BOX 1890
WILMINGTON,NORTH CAROLINA 28402-1890
Please note that your permitted activity is subject to a compliance inspection by a U.S.Army Corps of
Engineers representative. If you fail to comply with this permit you are subject to permit suspension,
modification,or revocation.
I hereby certify that the work authorized by the above referenced permit has been completed in
accordance with the terms and condition of the said permit,and required mitigation was completed in
accordance with the permit conditions.
Signature of Permittee Date
L

Town of Morehead City
Carteret County
AID#2007-00683-016
Special Conditions
1. Upon completion of the subject baseball field,the 0.91 acres of wetlands and
waters within the property,as depicted in the June 21,2007 Conservation Easement,shall
be left in their natural or mitigated condition as described in the June 21,2007
Conservation Easement. No person or entity shall fill,grade,excavate,or perform any
other land disturbing activities; nor construct any structures,nor any other agricultural
use on such conservation area.
2. The Conservation Easement for the 0.91 acres has been submitted by Land
Management Group on June 21,2007; and reviewed and approved by the Corps. This
approved easement agreement,which declares North Carolina Division of Water Quality
as the easement holder,or grantee,must be executed and recorded with Carteret County
Register of Deeds;and a copy of the recorded document submitted to our office within 15
days of recording. This record must include our verified wetland survey depicting the
location of the 0.91 acres of preserved waters and wetlands on the park.
3. The Permanent Conservation Easement relating to the 0.91 acres of wetlands and
waters on the park cannot not be amended or modified without the express written consent
of the U.S.Army Corps of Engineers,Wilmington District.
4. In order to provide additional compensation for impacts to 0.5 acre of non-
riparian wetlands,the permittee shall make payment to the North Carolina Ecosystem
Enhancement Program(NC EEP)in the amount determined by the NC EEP,sufficient to
perform the restoration of 0.5 acres of non-riparian wetlands in the White Oak River
Basin,Cataloging Unit 03020106,at a 1:1 ratio.
5. Construction within jurisdictional areas on the property shall begin only after
the permittee has made full payment to the NC EEP and provided a copy of the payment
documentation to the Corps,and the NC EEP has provided written confirmation to the
Corps that it agrees to accept responsibility for the mitigation work required,in
compliance with the MOU between the North Carolina Department of Environment and
Natural Resources and the United States Army Corps of Engineers,Wilmington District,
dated November 4, 1998.

FWArF
O0 9ti Michael F.Easley,Governor
William G.Ross Jr.,Secretary
North Carolina Department of Environment and Natural Resources
Coleen H.Sullins Director
Division of Water Quality
November 27, 2007
Randy Martin, Town Manager
Town of Morehead City
706 Arendell Street
Morehead City, NC 28557
Subject: Request for Additional Information
Stormwater Project No. SW8 070933
Morehead City Baseball Park
Carteret County
Dear Mr. Martin:
The Wilmington Regional Office received previously requested additional information for the
pending Express Stormwater Management Permit Application for Morehead City Baseball Park
on November 27, 2007. 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 extend the trash rack over the face of the bypass weir opening on each
Drop Inlet Flow Splitter structure.
2. Please submit a completed infiltration basin supplement form for each basin and
a separate signed Operation and Maintenance document for each basin.
3. Please add a cross-section view of each infiltration basin area, including the
overflow swale, noting the 3:1 slope requirement, the basin bottom elevation, the
bypass elevation and the side slope vegetation.
4. Please provide dimensions and radii for the bottom contour of each basin.
5. Please raise the emergency overflow elevation such that it is higher than the
bypass elevation.
6. Please label the vegetated filter on the plans and provide a detail.
7. For projects within % mile of SA waters, the vegetated filter must be a minimum
of 50' long.
8. Please add the level spreader detail to the plans, or incorporate it into the
vegetated filter detail.
9. Please add a flow distribution system within each basin, which will distribute the
incoming runoff evenly over the entire bottom surface area, thereby preventing
erosion and overuse of the infiltration area in the immediate vicinity of the
entrance.
10. The bypass elevation noted on the bypass structure for Basin 3 is 7.50, whereas
the calculations indicate that the storage elevation (i.e., the bypass elevation) is
8.95. Please correct and revise the Drop Inlet#4 Flow Splitter detail.
N,��ehhCarolina
/vaturaf//
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone[phone] Customer Service
Wilmington Regional Office Internet: www.ncwaterquality.org Fax [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Mr. Martin
November 27, 2007
Stormwater Application No. SW8 070933
11. Due to the insufficiency of this application, please submit a non-refundable
$1000.00 additional information fee.
Please note that this request for additional information is in response to a preliminary
review. The requested information should be received in this Office prior to December
4, 2007, or the application will be returned as incomplete. The return of a project will
necessitate that you reschedule the Express review and resubmit all of the required
items, including the application fee.
If you need additional time to submit the information, please mail, email or fax your
request for a time extension to the Division at the address and fax number at the bottom
of this letter. Time extensions of up to 5 days may be granted. If the application is not
complete at that time, it will be returned.
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 [phone] or email me at linda.lewisancmail.net.
Sincerely,
44eo, . 4eiococolaa:
Linda Lewis
Environmental Engineer III
ENB/arl: S:IWQS\STORMWATERIADDINFO120071070933-3.nov07
cc: Vincent Antrilli, Jr., EDA
Linda Lewis
Page 2 of 2

SW8 070933 Morehead Baseball Park
Subject: SW8 070933 Morehead Baseball Park
From: Linda Lewis <[e-mail]>
Date: Tue, 27 Nov 2007 14:25:50 -0500
To: "Vincent Antrilli, Jr." <[e-mail]>
Vincent:
Please take a look at my review comments.
Linda
Content-Type: application/msword
070933-3.nov07.doc
Content-Encoding: base64
1 of 1 11/27/2007 2:25 PM

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Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
August 20, 2007
Location Depth Soil Description
SB-1 0-12" Grey fine SAND w/silt
12"-18" Tan fine SAND �4t. .t t .
18"-28" Black silt
y SAND w/stumps Y
28"-48" Grey clayey SAND ,p_
C/1( 1 A.0,ij Leo;
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute (5.6 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation.
�Location Depth Soil Description
SB-2 0-10" Peat C
10"-24" Grey fine SAND w/ silt , (64.4fri• 7
24"-48" Grey sandy CLAY
2." ter tits
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute 5.3 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 46 inches below the existing grade elevation.
Location Depth Soil Description
SB-3 0-4" Peat (Oeu.W
4"-12" Grey fine SAND w/ silt c'6,4
12"-48" Grey/tan sandyCLAY
Y
°r tee
II„c„teyt C
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
,---,-Infiltration Rate: 0.06 inches per minute (3.5 inches per hour)
Test was conducted 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation
IECVE.
n
1111 AUG 2 3 2007
tJ
DWQ
PROJ# �_

Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
August.20, 2007
Location Denth Soil Description
SB-4 0-3" Peat I oc..
0" Grey fine SAND w/ silt I
l 0"-50" Grey/tan sandy CLAY a
r
(L" pi 0,40a-L.�(s
Seasonal High Water Table was estimated to be at 24 iziches below the existing
grade elevation.
Infiltration Rate: 0.07 inches per minute (4.5 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation
flECEMVE
rl
•
AUG 2
3 2007
DWQ
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SEP-05-2007 WED 02:43 PM NODENR FAX NO. 9103502004 P. 08
9 Oa/c)7
•
V kcl; ''r//r a FDA
DIVISION OF WATER QUALI 5 // 767 9678
78
INFILTRATION SYSTEM INVESTIGATION /�
1)1,44
Complete and email this farm to Vincent.Lewisigncmail,net.If there aremore L eV t K +attach a second sheetthen 7 areas to be tested 1
S83 x-3
Scheduled Site Visit Date: Time:
Project Name:i�'iar eLh eadL C t �as�bg 1?Re k
S tAddress: 2:710 Mellaarry L ? r iorekao.dl, L4
Directions from the nearest intersection of two major roads:
From Ilwy(7o arid _.__nvl-s+ a -,o,k. gas{.on 70 CAre+.otel(St) .°I rh.i lesi 7e4SE,,
o et an 14 2014. SA- +►,files . 1 Iaki err L
�4 acre being disturbed? YES ONO e �ash o� m L tc�oc.�}�'sow
Q CAMA Major required?DYES ENO
Consultant Name: iwc.n.1- A r c I t i Phone: 9Lct oG-(oisi _
Consultant Firm Name: "__
Bore Number 1 2 3 4 5
a) Existing Ground Elevation _ --
b)Proposed Bottom Elevation
c) Difference(a minus b)
,_, )Add 2 ft. Miry. Bore De th)
e)Hardpan Depth?
-
f) Infiltration Rate OK? --
A rox. Elev. Of SHWT 4/ � -�--
h Max. lowest bottom elev.
-
Comments . 1-h e 1f
1."_1„dy
Required Attachments:
1. Legible vicinity map.
2. Complete Soils Report,
3. PDF formatted site plan with the boring locations to be tested.Site plans should
be emailed or hand-delivered only. Illegible faxed maps will not be accepted,
All
ion
bas nA proposed
nch mustte marked and d existing,
' activef these utility
arenes!ocated not flagged,r he Soils Scientist
proposed
reserves the right to decline to do the investigation. if the
located in an area of existing � proposed filtration system will be
breaking through the Impervious layer must be prthereovided..d s no open area
sa►s nearby, oes not capable of
the place of a soils report prepared by an appropriate professional, The Soils Scientist will only
venfy the soil conditions that are reported in the Soils Repot and make a determination as to
the suitability of the site to meet the infiltration design requirements ender NCAC 2H.1000, and
assumes no liability should the system fail
S:1WQStSTORMWATERIFORMSIirlfiltration site visit.for
Revised 5.07

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SW8 070933 Morehead Baseball Pk
Subject: SW8 070933 Morehead Baseball Pk
From: Mary Jean Naugle<[e-mail]>
Date: Wed, 28 Nov 2007 13:39:52 -0500
To: [e-mail], Mary Naugle<[e-mail]>
Vince;
The following is attached in reference to the stormwater application:
* checklist
* pump guidelines
* express process
* training with vegetated filter detail on the 2007 training
* bmp link: http://h2o.enr.state.nc.us/su/bmp forms.htm
The rule addresses pockets of high density in 15A NCAC 2H.1003 (d) . [last sentence of
the section] . Development must demonstrate that no areas within the project site are
of such high density that stormwater runoff threatens water quality. "
Please note that a change to any part of the stormwater application may impact some
or all documents. [application, supplements, calculations, plans and details] .
Please verify all documentation to ensure the changes requested with each additional
information are addressed as well as requirements of the bmp and the rule.
Documentation must be consistent.
If I can call the applicant's representative to address their questions, please let
me know the contact name and number.
Please let us know if you need other information.
Mary Jean Naugle
Subject: [Fwd: [Fwd: Express Stormwater Permitting in WIRO]]
From: Linda Lewis<[e-mail]>
Date: Thu, 26 Oct 2006 08:28:19 -0400
To: Mary Naugle<[e-mail]>
Subject: [Fwd: Express Stormwater Permitting in WIRO]
From: Linda Lewis<[e-mail]>
Date: Fri, 20 Oct 2006 18:02:41 -0400
To: Phil Norris<[e-mail]>, Phil Tripp <[e-mail]>, Mark Hargrove
<[e-mail]>, Richard Collier<[e-mail]>, Margaret Gray
<[e-mail]>, Brad Sedgwick<[e-mail]>, Jeff Malpass
<[e-mail]>, Ted Burke<[e-mail]>, Mark Walton
<[e-mail]>, Mark Arcuri<[e-mail]>, "David Bowman, P.E."
<[e-mail]>, David Brown<[e-mail]>, Jay Houston
<[e-mail]>, Jimmy Fentress<[e-mail]>, John Richards
<[e-mail]>,Mike Gallant<[e-mail]>,Mike Mori/ay
<[e-mail]>, Dave Newsom<[e-mail]>, [e-mail],
Elizabeth Nelson<[e-mail]>,Betty Bullock<[e-mail]>, ron cullipher
<[e-mail]>, Charles Riggs<[e-mail]>, Barry Mitchell
1 of 3 11/28/2007 1:45 PM

SW8 070933 Morehead Baseball Pk
<[e-mail]>, Jarrod Edens<[e-mail]>, JeffPetroff
<[e-mail]>, Jerry Kittle<[e-mail]>, Joe Boyd
<[e-mail]>, Steve Janowski<[e-mail]>,
Candi Alexander<[e-mail]>,Rick Shiver<[e-mail]>, Tom
Reeder<[e-mail]>, Edythe Mckinney<[e-mail]>,Paul Rawls
<[e-mail]>, Cameron Weaver<[e-mail]>, Alan Klimek
<[e-mail]>, Coleen Sullins<[e-mail]>
Please see the attached email from Ed Beck, regarding revised Express Permitting
procedures that are being implemented.
Please forward this email to all others in your company that deal with Express
permitting.
Thank you.
Subject: Express Stormwater Permitting in WIRO
From: Ed Beck<[e-mail]>
Date: Fri, 20 Oct 2006 17:15:37 -0400
To: Linda Lewis <[e-mail]>
The Express Program for State Stormwater Permits in the Wilmington Regional Office
has been carefully evaluated to determine the cause of the current backlog in
receiving and processing of applications. The attached document describes the
resulting process that has been developed. The goal of the changes is to streamline
the process and to ensure that high quality applications are received into the system
so that express service can be provided. Additional help with reviewing applications
is being provided to shorten the current review time. It is hoped that the new
process for scheduling submittals and the goals for review time can be implemented by
the first of next year. The policy concerning resubmittals will be implemented
immediately. I am optimistic that these actions will allow us to get back on track
and provide the level of express service that we all desire.
Ed Beck
Regional Supervisor
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checklist.doc
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2 of 3 11/28/2007 1:45 PM

A •
•
NCDENR
North Carolina Department of Environment and Natural Resources
Wilmington Regional Office
[phone]
• Michael F. Easley, Governor William G. Ross Jr., Secretary
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FAX COVER SHEET
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Date: 11— �7--b�' _ # pages / (eXei 7A1:5 Cam) _
To: V c 4- �h l�jt From: Lii�dz
Co: LbA Division .k'Q
Fax: Cffq_ ��� '' c707 FAX #: [phone]
Remarks:
127 Cardinal Drive Ext, Wilmington, North Carolina 28405-3845 • Phone: [phone]/FAX. [phone] •

6" PERFORATED PLASTIC
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NOV-27-2007 TUE 05:19 PM *
>K FOR: NCDENR 9103502004 :K
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* DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP *
* NOV-27 05: 18 PM 919197879678 31" 2 FAX TX OK 202 *
TOTAL : 31S PAGES: 2
*******************************************:K********>Ic********************:K***********>Ic**************
North Carolina NCDENR
pepartment of Environment and Natural Resources
Wilmington Regional Office •
• Michael F. Easley, Governor [phone]
William G. Ross Jr., Secretary
62s4 // COvE13 SHEEt
Date. /1--
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•
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FAX #: 9I0-350-2004
Remarks:
•
•
•
1�Cardinal Drive Ed, Wilmington. North Carolina 28405-3845 Phone: g ia,7
96.7215!FAx. 910-35o•20ia4

Re: SW8 070933 Morehead Baseball Park
Subject: Re: SW8 070933 Morehead Baseball Park
From: Linda Lewis<[e-mail]>
Date: Tue, 27 Nov 2007 15:32:16 -0500
To: Vince Antrilli <[e-mail]>
CC: Mary Naugle <[e-mail]>
Vince:
The flow distribution system that we see a lot of is a half-pipe buried and staked,
so that the rounded side is buried and the bottom of the basin comes up to the cut
edges. There would be one long "header" with several fingers off of it such that the
flow could reach all areas of the basin.
Please resubmit the information to the attention of Mary Jean Naugle. She is going to
finish up anything that I can't.
Linda
Vince Antrilli wrote:
Hi Linda,
Thank you for your comments. I'm not familiar with a flow distribution
system per comment #9. What type of device are you looking for?
Who should I address the resubmission package to? I understand that you will
be out the month of December so I am assuming that someone else will be
reviewing the project in your absence.
Vincent Antrilli, Jr.
EDA pa
4140 Parklake Ave. , Suite 300
Raleigh, N.C. 27612
919-781-1083 ph
919-906-6151 cell
[e-mail]
Original Message
From: Linda Lewis [mailto:[e-mail]] Sent: Tuesday, November 27, 2007
2 :26 PM
To: Vincent Antrilli, Jr.
Subject: SW8 070933 Morehead Baseball Park
Vincent:
Please take a look at my review comments.
Linda
1 of 1 11/28/2007 8:36 AM

•
SW8 070933 Morehead City Baseball Park
Subject: SW8 070933 Morehead City Baseball Park
From: Linda Lewis<[e-mail]>
Date: Fri, 16 Nov 2007 17:46:56 -0500
To: "Vincent Antrilli, Jr." <[e-mail]>
CC: Ed Beck<[e-mail]>
Vincent:
Attached are my additional review comments. This project was Paul Bartlett's,
however, Paul retired as of yesterday, so I have inherited the project.
Unfortunately, there were quite a few items that needed to be addressed, based on
my review of the plans. The most problematic for you may be proving the 1/2 mile
distance to SA waters. Wet detention is not allowed for projects, low density or
high density, that are within 1/2 mile of and draining to SA waters.
Since I think these items should have been addressed in Paul's original review, I
am electing not to charge an additional information fee at this time.
Linda
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1 of 1 11/16/2007 5:47 PM

WArF
�,, Q Michael F.Easley,Governor
C. William G.Ross Jr.,Secretary
- North Carolina Department of Environment and Natural Resources
--1
© : ` ,; 'C ColeenH.Sullins, Director
Division of Water Quality
November 16, 2007
Randy Martin, Town Manager
Town of Morehead City
706 Arendell Street
Morehead City, NC 28557
Subject: Request for Additional Information
Stormwater Project No. SW8 070933
Morehead City Baseball Park
Carteret County
Dear Mr. Martin:
The Wilmington Regional Office received previously requested information for the pending
Express Stormwater Management Permit Application for Morehead City Baseball Park on
November 8, 2007. The original reviewer, Paul Bartlett, has retired, and this project has been
passed on to me to review. I found several deficiencies that should already have been
addressed therefore, no fee will be charged for this additional information request. The
following information is needed to continue the stormwater review:
1. I am unable to find anything in the file to confirm that the project is located at
least %Z mile from SA waters. Carteret County is NOT a Phase II county, so the
rules that apply to this pocket of high density are still the current coastal
stormwater rules, which do not allow the use of wet ponds if the project is within
1/2 mile of and draining to SA waters. Please note that the comments below are
applicable only if you can demonstrate that the project is greater than
mile from SA waters. If it is determined that the project is within / mile of SA
waters, the project must be returned and redesigned to utilize infiltration to treat
the runoff from the pockets of high density.
2. Your title on the application is shown as City Manager, however, Morehead City
is a town, not a city. Should this be revised to Town Manager?
3. Where and how does the collection system from the trench drain in front of the
concessions building enter into the collection piping that drains to Pond 3? DB-13
appears to be the low point of that system, but there is no connection piping from
there into DB-14.
4. The pond details on sheet C-11 need to be based on the actual proposed pond
layout for each pond.
5. Please include the forebay in the pond section detail.
6. Please provide dimensions for each line and arc that makes up the permanent
pool contour line for each pond.
Nam` Carolina
,Naturally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington,NC 28405 Phone[phone] Customer Service
Wilmington Regional Office Internet: vvyy,nclvatprpualitv_.n Fax [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Mr. Martin
November 16, 2007
Stormwater Application No. SW8 070933
7. Please eliminate the dead zone in Pond #3 by increasing the forebay
berm height, and creating a lowered weir section on the northwest side.
This will force all incoming runoff to exit the forebay such that the flow path
to the outlet structure is maximized.
8. Please relocate the outlet control structure in Pond #1 to utilize all of the
pond's surface area for settling solids.
9. Please include the orifice diameter and temporary pool elevation for each
pond on the outlet control structure detail. Each outlet structure must have
an outlet, either the top of the structure, or a weir cut into the side of the
structure, which is set at the specified temporary pool elevation of 5.61
and 6.26, respectively, for Pond 3 and Pond 1.
10. What happens to the runoff that is collected in the drain lines in the
baseball field after it is dumped into DI #1? Is it allowed to fill up the pipe
system and simply bubble up out of the DI and sheet flow into the existing
ditch?
11. The swale collecting runoff from the north parking lot should enter the
pond via the forebay. You can either extend the swale over to the
proposed forebay, or extend the proposed forebay around to encompass
the swale's entry point, or create a separate forebay for the swale.
12. Please specify the wetlands plants to be planted on the 10:1 vegetated
shelf by name on the plans.
13. Pond #3 has been designed using the 85% TSS chart, therefore, a 30'
vegetated filter is required after the level spreader. Please label the filter
on sheet C-6 and detail the filter (30' length, slope, elevations, etc.) in both
plan and section views. The vegetated filter cannot be located in wetlands.
You can add the vegetated filter information to the level spreader details, if
desired.
14. What is the scale for the INSET view on sheet C-6?
Please note that this request for additional information is in response to a preliminary
review. The requested information should be received in this Office prior to November
23, 2007, 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, email or fax your
request for a time extension to the Division at the address and fax number at the bottom
of this letter. For Express projects, one extension for an additional 5 days can be
granted. If the application cannot be made complete within 10 days, the application will
be returned. Please note that I will be on vacation beginning December 3, 2007. I hope
to be able to issue all my outstanding Express permits by November 30, 2007.
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.
Page 2 of 3

Mr. Martin
November 16, 2007
Stormwater Application No. SW8 070933
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 [phone] or email me at Iinda.lewisCa�ncmail.net.
Sincerely,
/60.7 . ade.4,44;„
Linda Lewis
Environmental Engineer III
ENB/arl: S:IWQSISTORMWATERIADDINFO120071070933-2.nov07
cc: Vincent Antrilli, Jr., EDA
Linda Lewis
Page 3 of 3

EPApa
north Carolina
Architects•Engineers•Planners
November 5, 2007
Mr. Paul T. Bartlett, P.E.
NCDENR— Division of Water Quality
512 Salisbury St. cONr
Raleigh, N.C. 27604 ' ����
Re: Morehead City Baseball Park w O '
Carteret County - -
Dear Mr. Bartlett,
The purpose of this letter is to submit additional information and revisions requested on
the above project. We offer the following in response to your letter dated Oct. 2, 2007:
1. Please clarify the orifice diameters for Ponds 1 and 3. For Pond 1, the
supplement lists a 0.83"ra and the plans label a 0.75"0 drilled hole. For Pond 3,
the supplement lists a 1.65"o and the plans label a 1.5"0 drilled hole.
The plans have been modified to match the supplements accordingly.
2. Please update Sheet#C-17 and detail 7 to reflect the temporary pool elevations
per the supplements and calculations.
The detail 7 on sheet C-17 has been modified to match the supplements
and calculations.
We trust that this information meets your needs. If you should have any additional
questions or comments, please do not hesitate to contact our office.
Sincerely,
Vince Antrilli, Jr.
EDApa
vantrillk EDApa.com
Raleigh Location: Jacksonville Location: Morehead City Location:
4140 Parklake Avenue 901 Hargett Street 1007 Shepard Street
Suite 300 Suite D Morehead City,NC 28557
Raleigh,NC 27612 Jacksonville,NC 28540 Phone:[phone]
Phone:[phone] Phone:[phone] Fax:[phone]
Fax:[phone] Fax:[phone] e-mail:[e-mail]
e-mail:[e-mail] e-mail:[e-mail]

State of North Carolina 'i 4/0/ ' 14d9AiØ',
Department of Environment and Natural Resources
Division of Water Quality � �
Wetlands and Stormwater Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Michael F. Easley, Governor William G. Ross, Jr., Secretary
FAX COVER SHEET
Date: 11/1/07 No. of Pages: 2 (Incl. Cover)
To: Vince Antrilli From: Paul Bartlett
Company: EDApa Water Quality Section - Stormwater
FAX#: [phone] FAX#: [phone]
Phone #: [phone] X235
DWQ Stormwater Project Number: SW8 070933
Project Name: Morehead City Baseball Park
MESSAGE:
Vince,
A Request for Additional Information is attached for the subject project. The original will
be mailed to Mr. Martin, and a copy will be mailed to you.
If you use a courier service, please send to my attention at:
NCDENR— Div. Of Water Quality
Archdale Building, 12th floor, Room1209E
512 N. Salisbury St.
sleigh, NC 27604
EN B\ptb:
S:\WQS\STORMWATER\ADDI NFO\2007\070933FAX.nov07.
1617 Mail Service Center,Raleigh,NC 27699-1617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer

OF WAIF
`O� is,
Michael F.Easley,Governor
William G.Ross Jr.,Secretary
North Carolina Department of Environment and Natural Resources
Coleen H.Sullins,Director
Division of Water Quality
November 1, 2007
Mr. Randy Martin, City Manager
Town of Morehead City
706 Arendell Street
Morehead City, NC 28557
Subject: Request for Additional Information
Stormwater Project No. SW8 070933
Morehead City Baseball Park
Carteret County
Dear Mr. Martin:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Morehead City Baseball Park on September 25 and a revised application on October 16, 2007. 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 clarify the orifice diameters for Ponds 1 and 3. For Pond 1, the supplement lists a 0.83"4 and,
the plans label a 0.75"4 drilled hole. For Pond 3, the supplement lists a 1.65"(I) and the plans label a
1.5"4) drilled hole.
2. Please update Sheet#C-17and detail 7 to reflect the temporary pool elevations per the supplements
and calculations.
Please note that this request for additional information is in response to a partial, preliminary review.
The requested information should be received by this Office prior to November 9, 2007, 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 eel free to call me at [phone] X235.
Si rely, •
•
Paul T. Bartlett, P.E.
Environmental Engineer
ENB/ptb: •
S:\WQSISTORMWATER\ADDI NFO120071070933.nov07
cc: Vincent Antrilli, Jr., EDApa
Paul Bartlett
N,o��rtltCarolina
--��r ,Naturally
Wetlands and Stormwater Branch 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone]
Internet h2o.enr.state.nc.us 512 N.Salisbury St. Raleigh,NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

T f
,spA Pa
north caroling
Architects•Engineers•Planners
October 16, 2007
Mr. Paul T. Bartlett, P.E.
NCDENR— Division of Water Quality ,r•
512 Salisbury St. RE"'`,r"��T
Raleigh, N.C. 27604 r 007
Re: Morehead City Baseball Park a £'
Carteret County 13Y-Du p
Dear Mr. Bartlett,
The purpose of this letter is to submit additional information and revisions requested on
the above project. During the revisions and gathering of additional information, it was
determined that since the ponds were being used to provide BMP treatment for the
areas of high impervious percentage (high density) and since the ponds would yield
excess fill, we have chosen to eliminate Pond 2 in Drainage Area 2 (DA-2) and modify
the pond sizes in DA-1 and DA-3. The runoff from the small amount of impervious area
in DA-2 will sheet flow onto a large grassed area where it will percolate into the ground.
Subsequently the plans and calculations have been revised to reflect these changes as
well as comments and information requested by you. We offer the following in response
to your letter dated Oct. 2, 2007:
Please provide Method 1/Method 2 calculations to account for wetlands on site
on determining project built upon area (refer to attached sheet).
The Method 1/Method 2 calculations have been added to the Water Quality
Calculations within the revised Engineering Report. Due to the
configuration of the wetlands the entire wetlands are considered resulting
in the total project area including the wetlands to be used to determine the
project BUA. This information was confirmed with you by way of email.
k 2. Please clarify the impervious area in Drainage Area 2. The total appears to be
approximately 20,000 sf instead of the proposed 6,809 sf(grassed, overflow
parking lot is considered impervious area & appears to be >16,000 sf vs 4,231 sf
listed in the application, Section 111.6).
The grassed overflow parking area has been removed from the project
design. The 4,231 sf represents the area of asphalt driveway near the
entrance of the site that is within DA-2. All other impervious areas are
reflected in the Other on site row in the chart.
Raleigh Location: Jacksonville Location: Morehead City Location:
4140 Parklake Avenue 901 Hargett Street 1007 Shepard Street
Suite 300 Suite D Morehead City,NC 28557
Raleigh,NC 27612 Jacksonville,NC 28540 Phone:[phone]
Phone:[phone] Phone:[phone] Fax:[phone]
Fax:[phone] Fax [phone] e-mail:[e-mail]
e-mail:[e-mail] e-mail:[e-mail]

Morehead City Baseball Park Response
October 16, 2007
Page 2 of 3
3. Please pr ide stage storage tables for the 3 ponds in the calculations that
includ e forebay and main bay bottom elevations and permanent pool
el ation with surface areas, incremental and cumulative volumes (tables in
alculations don't include permanent pool &forebay volumes & calculations for
FB=20% of FB plus main bay at PP elev.).
The stage storage tables for Lakes 1 and 3 have been revised to include the
data requested. Lake 2 has been eliminated since the drainage area meets
the low density requirement and the soil will not be required as fill for the
project. The stage storage tables included have been previously verified by
you in email correspondence.
4. Please clarify the temporary pool volume and elevation for the 3 ponds and make
all documents consistent. The TP elevation is the elevation at which the design
'It storm volume is achieved. "Average Depth" calculations are used to determine
,' SA/DA ratios for the Permanent Pool and are estimated by PP Vol/PPSA.
\1 Applications received on or after 10/1/07 must have as average depth of 3'
minimum, based on this calculation. It appears that this calculation method was
C. used to determine the TP depth.
The Water Quality Calculations have been revised to interpolate the actual
stage storage of the Temporary Volume. The Temp. Pool elevation is listed
below the Perm. Pool elevation. The Minimum top of bank is based on the
the TP elev plus one foot of freeboard. The PP surface area and average
depth are also shown in the calculations for use later in determining the
appropriate wet pond size for required TSS removal.
5 Please clarify the swale detail on Sheet#C-11. The plan views of the swales
suggest a V-bottom and not a 2' minimum flat bottom per sheet#C-11.
The detail on sheet C-11 has been modified to reflect a V-bottom swale.
n Sheet#C-12, please: (a) illustrate the grate in the side elevation view of the
v6. Oe
Control Structure detail; and (b) add a note that a pump will be provided in order
to draw down the ponds for maintenance or in the event of an emergency.
The detail on sheet C-12 has been modified to show the grate in the side
elevation and a note has been added to the detail regarding a pump being
provided by the owner for maintenance and emergency purposes.
(

Morehead City Baseball Park Response
October 16, 2007
Page 3 of 3
7. P ase clarify the ponds' planting plan for conformance with the 2007 BMP
anual, Section 6.4.2 Guidelines for Plant Placement. I appears that trees and
shrubs are within 10ft of inletfoutlet pipes, the emergency spillway, and flow
spreader, and tree setback at maturity may cause leaf fall into the permanent
pool.
The plans and detail have been revised to provide a minimum of 10ft
clearance from inlet/outlet pipes, emergency spillway, and spreader swale.
A dimension has also been added to the detail section stipulating the
maximum extent of canopy.
Additional Fees
A check in the amount of$1000.00 is attached with this resubmittal.
We trust that this information meets your needs. If you should have any additional
questions or comments, please do not hesitate to contact our office.
Sincerely,
Vincent Antrilli, Jr.
EDApa
[e-mail]

State of North Carolina
Department of Environment and Natural Resources etiN\t)
Division of Water Quality /O� b71b�
Wetlands and Stormwater Branch .:' e .. , (AA cers.
1617 Mail Service Center VT
Raleigh, NC 27699-1617 r * ` 7 vi
Michael F. Easley, Governor William G. Ross, Jr., Secretary
FAX COVER SHEET
Date: 10/2/07 No. of Pages: 4 (Incl. Cover)
To: Vince Antrilli From: Paul Bartlett
Company: EDApa Water Quality Section - Stormwater
FAX#: [phone] FAX#: [phone]
Phone #: [phone] X235
DWQ Stormwater Project Number: SWILmassigiled /
Project Name: Morehead City Baseball Park , l$ e1,r hslaurc
etop.
MESSAGE: I /// a '/¢-2 ,fe--
Vince,
A Request for Additional Information is attached for the subject project. The original will
be mailed to Mr. Martin, and a copy will be mailed to you.
If you use a courier service, please send to my attention at:
NCDENR— Div. Of Water Quality
Archdale Building, 12th floor, Room1209E
512 N. Salisbury St.
Raleigh, NC 27604
ji)
ENB\ptb:
S:1WQSISTORMWA T ER ADUINFO`120071MCityBBParkFAXUnassign.oct07.
1617 Mail Service Center,Raleigh,NC 27699-1617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer

WAT
Michael F.Easley,Governor
IL,
y William G.Ross Jr.,Secretary
North Carolina Department of Environment and Natural Resources
Coleen H.Sullins,Director
Division of Water Quality
October., 2007
Mr. Randy Martin, City Manager
Town of Morehead City
706 Arendell Street
Morehead City, NC 28557
Subject: Request for Additional Information
Stormwater Project No. SW8 u si ed
Morehead City Baseball Park( -709 7
Carteret County
Dear Mr. Martin:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Morehead City Baseball Park on September 25, 2007. 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 provide Method 1/Method 2 calculations to account for wetlands on site in
determining r e built upon area (refer to attached heet).
Please note that the permit will be issued for a proposed overall low density
development with pockets of high density provided that stormwater runoff will be treated
using an "Alternative Design Criteria"(i.e., wet ponds) in accordance with Rule
2H.1008(h). The Method 1/Method 2 calculations will document low density. The
following items will assist in documenting the 21;.1008(h) rule requirements.
c/2' Please clarify the impervious area in Drainage Area 2. The total appears to be
approximately 20,000 sq ft instead of the proposed 6,809 sq ft (grassed, overflow
parking lot is considered impervious.area & - +pears to be >16,000 sq ft vs 4,231 s f
listed in�aapplication,,Secti n 111.6). -ram&s f' y oA1 fh•.(Q44) pow k r fie of
71T
3. Pleasd provide stage storage tables for the 3 ponds in the calculations that include the
forebay and main bay bottom elevations and permanent pool elevation with surface
areas, incremental and cumulative volumes (tables in calculations don't include
permanent poolA& for bay volumes calculati{�ns for FB I% of FB plus main bay at
PP elev.). i�1,4 1t.1 -EXC./A% ;''
4. Please clarify the temporary pool volume and elevation for the 3 ponds and make all
documents consistent. The TP elevation is the elevation at which the design storm
volume is achieved. "Average Depth" calculations are used to determine SA/DA ratios
f, for the Permanent Pool and are estimated by PP Vol/PPSA. Applications received onr,
cv or after 10/1/07 must have an average depth of 3' minimum, based on this calculation.
It appears that this calculation method was used to determine the TP depth.
5. Please clarify the swale detail on Sheet#C-11. The plan views of the swales suggest a
/V-bottom and not a 2' minimum flat bottom per Sheet#C-11.
N"o�nCarolina
,Naturally
Wetlands and Stormwater Branch 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone]
Internet: h2o.enr.state.nc.us 512 N.Salisbury St. Raleigh,NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Mr. Randy Martin, City Manager
October 2, 2007
Stormwater Application No. SW8 unassigned
On Sheet#C-12, please: (a) illustrate the grate in the side elevation view
6. w
of the Control Structure detail; and (b) add a note that a pump will be
provided in order to draw down the ponds for maintenance or in the event
of an emergency.
•
7. Please clarify the ponds' planting plan for conformance with the 2007 BMP
Manual, Section 6.4.2 Guidelines for Plant Placement. It appears that
trees and shrubs are within 10 ft of inlet/outlet pipes, the emergency
spillway, and flow spreader, and tree setback at maturity may cause leaf
fall into the permanent pool.
b Additional fees, not to exceed 50% of the original permit application fee, may be
charged for subsequent reviews due to the insufficiency of a permit application,
as specified by Section 11.4A of S.L. 2003-284.
b Because the application has significant permitting issues/deficiencies, a
resubmittal fee of$1,000 will be required in order for this project to remain
in the express program.
Please note that this request for additional information is in response to a partial,
preliminary review. The requested information should be received by this Office prior to
October 10, 2007, 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 [phone] X235.
Si,LJ7
,T
Paul T. Bartlett, P.E.
Environmental Engineer
ENB/ptb:
S:1WQSlSTORMWATERIADDINFO120071MoreCityBBParkUnassigned.oct07
cc: !Vincent Antrilli, Jr., EDApa
Paul Bartlett
2

The most current policy (October 5, 2006) regarding the amount of wetlands that can be included
in the site area is dictated by whichever of the following two calculation methods yields the least
amount of site area:
Method 1: Calculate the acreage of the wetlands. Divide the wetland acreage by the total site
acreage. If the result is 25% or less, then the total project area is the total site
acreage. If the result is more than 25%, then calculate the amount of wetland to
include such that no more than 25% of the site area acreage consists of wetlands in
this manner: subtract the entire wetlands area from the site area to get the uplands
area, then divide the uplands area by 0.75.
Method 2: Calculate the area of a 100 foot wide strip of wetlands measured from the uplands
area into the wetland.
Compare the two numbers, and choose the one that yields the smallest project area.
EXAMPLE A:
Total site area = 55 acres
Total wetland area = 15 acres
100' wide strip of wetland area = 5 acres
Method 1: 15 acres wetlands/55 acres site = 27.3% (> 25%)
55 acres site— 15 acres wetlands =40 acres uplands
Project area for calculating density=40/.75 = 53.33 acres
Method 2: 55— 15=40
Project area for calculating density—40 + 5=45 acres
Since 45 < 53.33, use area derived via Method 2 to calculate the allowable density.
EXAMPLE B:
Total site area = 55 acres
Total wetland area = 10 acres
0-100'wide strip of wetlandarea = 5 acres
Method 1: 10/55 = 18.2% (<25%)
Project area for calculating density=55 acres
Method 2: 55— 10=45 acres
Project area for calculating density=45 + 5 =50 acres
Since 50 < 55, use area derived via Method 2 to calculate the allowable density.
EXAMPLE C
Total Site Area = 55 acres
Total Wetland Area = 40 acres
0.100' strip of wetland area = 15 acres
Method 1: 40/55 = 73% (>25%)
55—40= 15 acres
Project area for calculating density = 15/.75 =20 acres
Method 2: 55—40= 15
Project area for calculating,density= 15 + 15 = 30 acres
Since 20 < 30, use area derived via Method 1 for calculating the allowable density.
The 100'wetland strip is measured from the 401/404 line waterward (into the wetlands) of the
project for a distance of 100', or to the mean high water(MHW) line or to the property line,
whichever comes first. No credit for wetlands located outside of the property line or beyond the
MHW line can be given. By definition, the project area includes only that area above the MHW
Line.
S:1WQS\STORMWATER\FORMSIWETLANDS POLICY AND EXAMPLE CALCS
Last updated 10/05/2006

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Wetlands and Stormwater Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Michael F. Easley, Governor William G. Ross, Jr., Secretary
FAX COVER SHEET
Date: 9/27/07 No. of Pages: 6 (Incl. Cover)
To: Vince Antrilli From: Paul Bartlett
Company: EDApa Water Quality Section - Stormwater
FAX #: [phone] FAX #: [phone]
Phone #: [phone] X235
DWQ Stormwater Project Number: SW8 i signed
Project Name: Mrehead City Baseball Park
MESSAGE:
Vince,
As requested, copy of checks and signature pages for application and supplements
attached.
decyr
ENB\ptb: S:\WQS\STORMWATER\ADDINFO120071MoreCityUnassign.sep07
1617 Mail Service Center, Raleigh,NC 27699-1617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer

. r • - ...
WpECS Carolinas,LLP
Geotechnical•Construction Materials •Environmental
CAROLINA
August 20,2007
Mr.Lee Dixon -.-.�FDA MoreheadIl_ei___PEOVIE
1007 Shepard Street
Morehead City,North Carolina 28557 AUG 2 2 2007
Re: Infiltration Evaluation
Morehead City Baseball Park --. —..,
Morehead City,North Carolina
ECS Project No.22.13259
Dear Mr.Dixon,
ECS Carolinas, LLP (ECS) recently conducted an infiltration evaluation for the proposed
infiltration areas at the above referenced site off of Mayberry Loop Road in Morehead City,
North Carolina. This letter,with attachments,is the report of our evaluation.
Field Testing
On August 21, 2007 ECS conducted an exploration of the subsurface soil and ground water
conditions at four requested locations shown on the attached Site Diagram. The purpose of this
exploration was to obtain subsurface information of the suitability of the in place soils for the
proposed infiltration area. We explored the subsurface soil and ground water conditions by
advancing one hand auger boring into the existing ground surface at the four requested boring
locations. We visually classified the subsurface soils and obtained representative samples of
each soil type encountered. We also recorded the ground water level observed at the time of
each hand auger boring. The attached Infiltration Evaluation Form provides a summary of the
subsurface conditions encountered at each hand auger boring location.
The ground water level and the seasonal high ground water level (SHWL) were estimated at
each boring location below the existing grade elevation. Below is a summary of each boring
location.
Location Water Level SHWL
SB-1 48 inches 24 inches _
SB-2 46 inches 24inches _
SB-3 48 inches 24 inches
SB-4 48 inches 24 inches
We have conducted four infiltration tests near the hand auger borings to estimate the infiltration
rate for the subsurface soils. The infiltration tests are typically conducted at two feet above the
SHWL.
7211 Ogden Business Park•Suite 201 •Wilmington,NC 28411 •[phone]*Fax[phone]

•
•
infiltration Evaluation
Morehead City Baseball Park
Morehead City,North Carolina
ECS Project No.22.13259
Field Test Results
Below is a summary of the infiltration test results:
Location Description Depth Inches/hour Inches/minute
1 Grey fine SAND 10 inches 5.6 0.09
w/silt
2 Grey fine SAND 10 inches 5.3 0.09
w/silt _
3 Grey fine SAND 10 inches 3.5 0.06
w/silt
4 Grey file SAND 10 inches 4.5 0.07
w/silt
Infiltration rates and SHWL may vary within the proposed site due to changes in elevation and
subsurface conditions.
If you have any questions regarding this report,please contact us at(910)686-9114.
Respectfully,
ECS CAROLINAS,LLP
6tra6br 117* j c
K.Brooks Wall Walid .Sobh,P. .
Staff Geologist Principal Engineer
NC License No.22983
Attachments: Site Diagram
Infiltration Evaluation

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Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
August 20, 2007
Location Depth Soil Description
SB-1 0-12" Grey fine SAND w/silt
12"-18" Tan fine SAND
18"-28" Black silty SAND w/stumps
28"-48" Grey clayey SAND
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute (5.6 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation.
Location Depth Soil Description
SB-2 0-10" Peat
10"-24" Grey fine SAND w/silt
24"-48" Grey sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.09 inches per minute(5.3 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 46 inches below the existing grade elevation.
Location Depth Soil Description
SB-3 0-4" Peat
4"-12" Grey fine SAND wl silt
12"-48" Grey/tan sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.06 inches per minute(3.5 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation

Infiltration Evaluation
Morehead City Baseball Park
Morehead City, North Carolina
ECS Project No. 22.13259
Augu.st20, 2007
Location Depth Soil Description
SB-4 0-3" Peat
3"-10" Grey fine SAND w/silt
10"-50" Grey/tan sandy CLAY
Seasonal High Water Table was estimated to be at 24 inches below the existing
grade elevation.
Infiltration Rate: 0.07 inches per minute(4.5 inches per hour)
Test was conducted at 10 inches below existing grade elevation
Ground water was encountered at 48 inches below the existing grade elevation