SW8031059_Historical File_20101011

Lewis,Linda
From: Alan Lewis[alewis©eces.biz] k
.Sent: Monday, October 04, 2010 4:35 PM )4.
l� p
To: Lewis,Linda IInn
Subject: The Pearl Stormwater(SW8 031059) I' BUT
Attachments: image001.ipg G_ r Q
Follow Up Flag: Follow up n/Ifi Uy►1
Flag Status: Flagged Q S�
Linda,
We noticed today that the permit issued for The Pearl on February 23, 2010 (SW8 031059 Mod)has a number
reversed on Page 2 of 6 (Design Standards) of the Permit. Specifically, under the BUA listing for
"Condominium Buildings"the permit reflects 11 Bldgs. 15 units ea. (Bldgs. #2-#12) at 10,383 sf ea;
A typographic error must have occurred during the permit preparation because the Stormwater Data Summary
on Sheet Cl of the approved plans reflects these particular buildings to have 10,838 sf ea instead of 10,383 sf
ea. Obviously,this was a simple transposition of numbers.
This minor error was also carried over to Page 5 of 6 under the Schedule of Compliance 17(f).
What is the best way to correct this? Could you simply mark the correction with initials and date or would you
have to reissue the entire permit?
No rush on this,just wanted to alert you to this minor item. Please send me a reply at your convenience.
Hope all is well,
Alan
East Coast
ENGYNESSNNG a SURVEYING.RC.
knoireers` I'larirters s Surveyors
Alan C. Lewis, President
J•ec'c•Of P;c�erirg&Manage-ent Services
4918 mcir~5-met•PO{ox 2469•$ha1°nt'e.NC'28459
Of€iro_9'0 754.8029 Fax:91C-754-619

State Stormwater Management Systems
Permit No. SW8 031059Mod.
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW DENSITY DEVELOPMENT WITH A CURB OUTLET SYSTEM
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Dr. DeCarol Williamson, DeCarol Williamson Enterprises
The Pearl
NC Hwy. 179, Calabash, Brunswick County
FOR THE
construction, operation and maintenance of a 25% low density subdivision with a curb
outlet system in compliance with the provisions of 15A NCAC 2H .1000 (hereafter
referred to as the "stormwater rules') and the approved stormwater management plans
and specifications, and other supporting data as attached and on file with and approved
by the Division of Water Quality and considered a part of this permit.
The Permit shall be effective from the date of issuance until rescinded and shall be
subject to the following specific conditions and limitations:
I. DESIGN STANDARDS
1. As shown in the "Stormwater Data Summary" on sheet Cl of the approved
plans, the built-upon area is limited as listed below. CAMA regulations may
reduce the allowable built-upon area for those areas or lots within the AEC.
355 single family lots, inclusive:
108 Lots at 6,200 sf each: (1-49, 79-97, 106, 107, 108, 167-184, and 337-355);
55 Lots at 5,900 sf each: (50-54, 109-130, and 185-212);
113 lots at 4,700 sf each: (55-78, 131-145, 213-234, and 285-336);
21 lots at 3,750 sf each: (146-166);
58 lots at 3,275 sf each: (98-105, and 235-284);
Roads and Parking: 3,329,991 sf;
Condominium Buildings:
11 Bldgs. 15 units ea. (Bldgs. #2-#12) at 10,383 sf ea;
18 Bldgs. 15 units ea, (Bldgs. 1, 13-17, 89-98, 113-114) at 10,550 sf ea;
85 Bldgs. 9 units ea. (Bldgs. 18-65, 73-88, 99-112, Future 66-72) at 4,340 sf ea.;
8 Bldgs. 12 units ea. (Bldgs. 115-122) at 8,382 sf ea.;
Cottage Neighborhood: 1 single at 2,000 sf; 84 duplex at 3,600 sf ea.;
Golf Clubhouses: West at 11,589 sf; East at 12,000 sf;
Resort Village Buildings: 186,227 sf;
Sales Center Building: 8,056 sf;
Golf Maintenance and Resort Services Building: 38,986 sf;
Tennis Clubhouse and Courts: 61,256 sf;
Golf School, Basketball/Bocce Ball Courts: 10,772 sf;
Amenity Pool Buildings & Hardscape: 59,250 sf;
Pedestrian Trails at 8 feet wide: 370,415 sf;
Sidewalks at 6 feet wide: 708,080 sf;
Golf Cart Paths at 8 feet wide: 438,172 sf;
Unallocated BUA: 700,588 sf.
Page 2 of 6

State Stormwater Management Systems
Permit No. SW8 031059Mod.
2. The overall tract built-upon area percentage for the project must be maintained
at 25%, per the requirements of Section .1005 of the stormwater rules.
3. This project proposes a curb outlet system. Each designated curb outlet swale or
100' vegetated area shown on the approved plan must be maintained at a
minimum of 100' long, maintain 5:1 (H:V) side slopes or flatter, have a
longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a
non-erosive manner, maintain a dense vegetated cover, and be located in either
a dedicated common area or a recorded drainage easement.
4. No piping shall be allowed except those minimum amounts necessary to direct
runoff beneath an impervious surface such as a road or under driveways to
provide access to lots.
5. Runoff conveyances other than the curb outlet system swales, such as perimeter
ditches, must be vegetated with side slopes no steeper than 3:1 (H:V).
6. Approved plans and specifications for projects covered by this permit are
incorporated by reference and are enforceable parts of the permit.
II. SCHEDULE OF COMPLIANCE
1. Curb outlet swales, vegetated areas and other vegetated conveyances shall be
constructed in their entirety, vegetated, and be operational for their intended use
prior to the construction of any built-upon surface, per the approved plans
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the swales or other vegetated conveyances will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to operate the permitted stormwater management systems at
optimum efficiency to include:
a. Inspections
b. Sediment removal.
c. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
f. Cleaning and repair of catch basin grates, flumes, piping, and the flow
spreader mechanism.
g. Maintenance of level spreaders and energy reduction devices.
4. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to the approved plans, regardless of size;
b. Project name change;
c. Transfer of ownership;
d. Redesign or addition to the approved amount of built-upon area or to the
drainage area;
e. The development of any high density or future development areas;
f. Further subdivision, acquisition or sale of the project area. The project
area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval was sought;
g. Filling in, piping, or altering any vegetative conveyance shown on the
approved plan.
5. The Director may determine that other revisions to the project should require a
modification to the permit.
Page 3 of 6

State Stormwater Management Systems
Permit No. SW8 031059Mod.
6. The permittee is responsible for verifying that the proposed built-upon area on
the entire project does not exceed the maximum allowed by this permit.
7. The maximum built-upon area assigned to each lot via this permit may not be
changed unless and until the permittee submits for and receives a permit
modification from the Division of Water Quality. The permittee and/or the lot
owner are both subject to enforcement action if the maximum BUA for the project
or for the individual lot is exceeded.
8. The permittee must certify in writing that the project's stormwater controls, and
impervious surfaces have been constructed within substantial intent of the
approved plans and specifications. Any deviation from the approved plans must
be noted on the Certification. The permittee shall submit the completed
Certification to the Division within 30 days of completion of the project. A partial
certification must be submitted on an annual basis if the development
encompasses many phases or will take several years to complete.
9. The permittee shall submit all information requested by the Director or his
representative within the time frame specified in the written information request.
10. Each lot and individual development project in this subdivision covered by this
permit will maintain a minimum 30 foot wide vegetative buffer between all
impervious areas and surface waters, including the normal pool of
impoundments, the top of bank of each side of rivers and streams, and the Mean
High Water Line of tidal waters.
11. Deed restrictions are incorporated into this permit by reference and must be
recorded with the Office of the Register of Deeds prior to the sale of any lot.
12. All roof drains must terminate at least 30' from surface waters, including the
normal pool of impoundments, the top of bank of each side of rivers and
streams, and the Mean High Water Line of tidal waters.
13. If the permittee establishes an Architectural Review Board or Committee for the
purpose of reviewing individual lot plans for compliance with the deed restrictions
and covenants, the plans reviewed must show all of the proposed built-upon
surfaces. Any approval given by the ARB or ARC on behalf of the permittee does
not relieve the permittee of the responsibility to maintain compliance with the
project's overall BUA limit, nor does it relieve the individual homeowner of the
responsibility to maintain compliance with the BUA limit assigned to that lot. It is
recommended that the permittee keep a copy of the approved lot plan.
14. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made
15. Prior to approving a transfer of the permit, the swales must be inspected and
determined to be in compliance with the permit. Any deficiencies will be repaired
or replaced prior to the transfer, unless the party taking over the permit agrees to
do the work.
16. The final plats for the project will be recorded showing all required drainage
easements and common areas, in accordance with the approved plans.
Page 4 of 6

State Stormwater Management Systems
Permit No. SW8 031059Mod.
17. The following deed restriction statements must be recorded with the Office of the
Register of Deeds prior to the sale of any lot:
a. The following covenants are intended to ensure ongoing compliance with State
Stormwater Management Permit Number 031059Mod., as issued by the Division
of Water Quality under NCAC 2H.1000.
b. The State of North Carolina is made a beneficiary of these covenants to the
extent necessary to maintain compliance with the Stormwater Management
Permit.
c. These covenants are to run with the land and be binding on all persons and
parties claiming under them.
d. The covenants pertaining to stormwater may not be altered or rescinded without
the express written consent of the State of North Carolina, Division of Water
Quality.
e. Alteration of the drainage as shown on the approved plans may not take place
without the concurrence of the Division of Water Quality.
f. The built-upon area is limited as follows:
355 single family lots, inclusive:
108 Lots at 6,200 sf each: (1-49, 79-97, 106, 107, 108, 167-184, and 337-
355);
55 Lots at 5,900 sf each: (50-54, 109-130, and 185-212);
113 lots at 4,700 sf each: (55-78, 131-145, 213-234, and 285-336);
21 lots at 3,750 sf each: (146-166);
58 lots at 3,275 sf each: (98-105, and 235-284);
Roads and Parking: 3,329,991 sf;
Condominium Buildings:
11 Bldgs. 15 units ea. (Bldgs. #2-#12) at 10,383 sf ea;
18 Bldgs. 15 units ea, (Bldgs. 1, 13-17, 89-98, 113-114) at 10,550 sf ea;
85 Bldgs. 9 units ea. (Bldgs. 18-65, 73-88, 99-112, Future 66-72) at 4,340 sf
ea.;
8 Bldgs. 12 units ea. (Bldgs. 115-122) at 8,382 sf ea.;
Cottage Neighborhood: 1 single at 2,000 sf; 84 duplex at 3,600 sf ea.;
Golf Clubhouses: West at 11,589 sf; East at 12,000 sf;
Resort Village Buildings: 186,227 sf;
Sales Center Building: 8,056 sf;
Golf Maintenance and Resort Services Building: 38,986 sf;
Tennis Clubhouse and Courts: 61,256 sf;
Golf School, Basketball/Bocce Ball Courts: 10,772 sf;
Amenity Pool Buildings& Hardscape: 59,250 sf;
Pedestrian Trails at 8 feet wide: 370,415 sf;
Sidewalks at 6 feet wide: 708,080 sf;
Cart paths at 8 feet wide: 438,172 sf;
Unallocated BUA: 700,588 sf.
g. Filling in, piping or altering any 3:1 vegetated conveyances (ditches, swales, etc.)
associated with the development except for average driveway crossings, is
prohibited by any persons.
h. Lots within CAMA's Area of Environmental Concern may have the permitted built-
upon area reduced due to CAMA jurisdiction within the AEC.
Filling in, piping or altering any designated 5:1 curb outlet swale or vegetated
area associated with the development is prohibited by any persons.
j. A 30'vegetated buffer must be maintained between all built-upon area and
surface waters, including the normal pool of impoundments, the top of bank of
each side of rivers and streams, and the Mean High Water line of tidal waters.
k. All roof drains shall terminate at least 30'from surface waters.
Each designated curb outlet swale or 100'vegetated area shown on the approved
plan must be maintained at a minimum of 100' long, maintain 5:1 (H:V) side
slopes or flatter, have a longitudinal slope no steeper than 5%, carry the flow from
a 10 year storm in a non-erosive manner, maintain a dense vegetated cover, and
be located in either a dedicated common area or a recorded drainage easement.
18. The permittee must submit a copy of the recorded deed restrictions within 30
days of the date of recording.
Page 5 of 6

State Stormwater Management Systems
Permit No. SW8 031059Mod.
III. GENERAL CONDITIONS
1. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to an enforcement action by the Division of Water Quality,
in accordance with North Carolina General Statutes 143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until revoked or terminated.
3. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance, or
termination does not stay any permit condition.
4. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules, and regulations contained in Title 15A of the North
Carolina Administrative Code, Subchapter 2H.1000; and North Carolina General
Statute 143-215.1 et. al.
5. The permit is not transferable to any person or entity except after notice to and
approval by the Director. The Director may require modification or revocation and
reissuance of the permit to change the name and incorporate such other
requirements as may be necessary. At least 30 days prior to making an
ownership change, or changing the name of the owner or the project, or making
a mailing address change, the permittee shall submit a completed and signed
Name/Ownership Change form to the Division of Water Quality accompanied by
the applicable documentation as listed on the form. The approval of this request
will be considered on its merits, and may or may not be approved.
6. The permittee is responsible for compliance with all the terms and conditions of
this permit until the Division approves of the permit transfer. Neither the sale of
the project, in whole or in part, nor the conveyance of common area to a third
party shall be considered as notice to the Director or approval of the permit
transfer.
7. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances imposed by other
government agencies (local, state and federal) which have jurisdiction and
obtaining all necessary permits prior to any development activities and prior to
disturbance of or filling in of wetlands. If any of those permits or approvals results
in revisions to the approved stormwater plans, a permit modification must be
submitted.
8. The permittee grants permission to DENR Staff to enter the property during
business hours for the purposes of inspecting the project's built-upon area,
stormwater control system and its components.
Permit modified and reissued this the 23rd day of February 2010.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 6 of 6

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1,Pi11 FEB-25 03:31 PM 97548049 1' 37" 7 FAX TX OK 485 *
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Wilmington Regional Office
Beverly Raves Perdue, Governor FAX COVER SHEET Dee Freeman, Secretary
Date: 2 _ Z' ' / No.Pages(excI.cover): e
To: >.-�+,.� j ds's6//
From: Jo Jo Casmer
Co: ZD 4-s T Eng' . •
Phone: [phone]
Fax: 9/ Fax: [phone]
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127 Cardinal Drive Extension,Wilmington,NC 28405•[phone]•An Equal opportunity Affirmative Action Employer

Lewis,Linda
From: Chris Russell[[e-mail]]
Sent: Wednesday, February 24, 2010 8:07 AM
To: Lewis,Linda
Cc: [e-mail]
Subject: RE: The Pearl
Thanks Linda, but we can't take all the credit. Your guidance in the comment letter played a major role in us
"getting it right". As we discussed the previous plan was not a good "go by". Thank you again for all of your
help.
For#1, the swale number should be#63.
For#2, The drainage area for the lots does include the portion of the lot area that could be reasonably
expected to drain into the swale. That portion of the lot BUA was added to the calculations and considered in
the velocity. To make the drainage area map more readable, the lot lines were not turned on in that view. The
swales that are shown in the "future development" areas were calculated using the impervious area for the
roadways only. These areas, when built, will be high density and will be treated with an engineered solution
such as a stormwater pond. At that time those swales will be abandoned and the stormwater runoff directed to
the high density BMP. Many portions of the future development may not be built out for 20 years or so.
Please let me know if you need anything else.
J. CHRISTIAN "CHRIS" RUSSELL, P.E.
EAST COAST ENGINEERING & SURVEYING, PC
RED APPLE PROFESSIONAL PARK
712 VILLAGE ROAD- SUITE 105
POST OFFICE BOX 2469
SHALLOTTE, NC 28459
(VV) 910-754-8029
(F) 910-754-8049
CONFIDENTIALITY STATEMENT: This e-mail transmission is intended only for the use of the individual or
entity named above and may contain information that is confidential, privileged, and exempt from disclosure
under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying,
distribution, or use of any of the information contained in this transmission is strictly prohibited. If you have
received this transmission in error, please immediately notify me by e-mail at the above address.
Original Message
From: Lewis,Linda [mailto:linda.lewis©ncdenr.gov]
Sent: Tuesday, February 23, 2010 5:33 PM
To: Chris Russell
Subject: The Pearl
Chris:
Two minor things I see-
1. Even though you've indicated that the duplicate swale#58 on sheet
C-13 was renumbered, that new swale number isn't recorded on C-13 that I can see, What is that new
number? I'll just add it to the plans rather than having you add it and print off 2 more copies.
i

2. The swale velocity calculations for those drainage areas where you are
showing lots should take into account the BUA for those lots. Where you have "unspecified"future
development within a drainage area that also has"proposed" known street or lot development, you have to
analyze the swale based on worst case at full build-out potential and then modify it later should that change.
Everything else looks great-you did a great job on all that detailed stuff that needed to be added. The permit's
drafted and will be issued tomorrow if you can give me that new swale number to add. If you want to change
anything about the swale calculations or the drainage area based on#2, then the permit will be delayed while
you take care of that. Just let me know.
Thanks,
Linda
Please note my new email address is Linda.Lewis( ncdenr.gov
Linda Lewis
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405
910-796-7215
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and
may be disclosed to third parties.

Lewis,Linda
From: Lewis,Linda
Sent: Tuesday, February 23, 2010 5:33 PM
To: 'Chris Russell'
Subject: The Pearl
Chris:
Two minor things I see-
1. Even though you've indicated that the duplicate swale#58 on sheet C-13 was renumbered, that new
swale number isn't recorded on C-13 that I can see. What is that new number? I'll just add it to the
plans rather than having you add it and print off 2 more copies.
2. The swale velocity calculations for those drainage areas where you are showing lots should take into
account the BUA for those lots. Where you have "unspecified" future development within a drainage
area that also has "proposed" known street or lot development, you have to analyze the swale based
on worst case at full build-out potential and then modify it later should that change.
Everything else looks great—you did a great job on all that detailed stuff that needed to be added. The permit's
drafted and will be issued tomorrow if you can give me that new swale number to add. If you want to change
anything about the swale calculations or the drainage area based on#2, then the permit will be delayed while
you take care of that. Just let me know.
Thanks,
Linda
Please note my new email address is [e-mail]
Linda Lewis
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405
910-796-7215
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may
be disclosed to third parties.
1

East Coast Engineering & Surveying, P.
Engineers, Planners, &Surveyors
Delivery by Hand
February 17,2010
Ms. Linda Lewis
NCDENR
Water Quality Section
127 Cardinal Drive Extension ��
Wilmington,North Carolina 28405-3845
Subject: The Pearl
Calabash,North Carolina --'ivED
Low Density Stormwater Plan Revision comment response FEB1 7 2010
Dear Ms. Lewis: kyt re 5
We received your comments via email on 1/28/10 and provide the following remedies.
1. I'm still trying to understand exactly what development we are writing a permit for.Is it possible to designate(show a
boundary for)what areas are already constructed,what areas are proposers and what areas are future development?
Some development is labeled as `future'; but has no proposed grading or numbered swales. The Division cannot issue a
permit for development that doesn't show sufficient proposed grading or stormwater treatment measures. For those
areas where development is unknown,future or preliminag,I suggest that the lines which depict the layout of the
buildings and parking, be removed from the plans,and a maximum BUA limit be assigned to that track When final
plans for that tract are developed, the plans can be approved as either a plan revision (if low density), or as a
modification for a pocket of high density.
a. The areas of"existing"and"proposed"development have been delineated. High
density areas of development have been assigned a maximum BUA for the tract and
a breakdown of the impervious area for these areas has been included on the plans.
2. The information listed in the stormwater summary table is very helpful. However, the following needs to be provided
a. Please label which condominium buildings on the plans are 9-unit, 12-unit or 15-unit buildings and provide
typical building dimension details;
i. All condominium buildings have been labeled and a typical building layout
with dimensions has been included with the revised plans.
b. Please label the "Cottage Neighborhood"and which ones are single cottages and which ones are duplexes;
i. The Cottage Neighborhood has been labeled. All cottages in this area are
duplex with the exception of one. They have been labeled for clarity.
c. Please provide the width of the golf cart path;
i. The dimensions of the golf cart path have been provided in the stormwater
summary table as well as on the plans.
d Please show and label the locations of the golf cart paths and pedestrian trails on the plans.
i. The plans have been revised to show the location of the cart paths and
pedestrian trails.
Red Apple Professional Park * 712 Village Road SW, Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

Ms.Lewis Page Two The Pearl
February 17,2010 Stormwater Comments
3. None of the roadway section details include sidewalk and there are no sidewalks leading from the condo parking lots to
the buildings shown on the plans. Yet, there is over 708,000 square feet of sidewalk being proposed Please show the
sidewalk locations on the road section details and/or on the plans and provide dimensions.
a. The sidewalks have been shown on the plans.
4. There are two Swales numbered 58 on sheet C-13, one behind Building 97 and one beside Building 89.
a. The numbering error has been corrected and the swales have been re-numbered on
the plans as well as the calculations.
5. Please add/show drainage easements on the plans.All swales and incidental piping must be located in either drainage
easements or dedicated common area.
a. Drainage easements & a note has been added to the plans for all swales and piping.
6. The drainage area map appears to include only the paved roads and parking areas as the drainage area of a swale.
What about sidewalks, roof drainage and the development on the single family lots?Unless lots are deed-restricted to be
graded away from the street, the lots will contribute runoff to the swale.At the very least,you should assume that one-
half of the lot will be graded to drain toward the street,meaning that all of the driveways BUA and half of the
remaining BUA should be accounted for in the swale calculations. I usually allow 1,000 square feet for the driveway
area and then subtract that from the lot's BUA allocation, then divide by 2 and add the 1,000 back in to get the total
lot BUA contributed to the swale for that lot. The most conservative calcwlation is to account for the entire lot and
BUA in the drainage area of the swale.
a. In the original submittal,the calculations included a 50%increase in drainage area
over and above the paved area. The roadway was the only impervious area
considered in the drainage calculations due to the uncertainty of the development
drainage at build out. The drainage areas have been re-drawn to more clearly
delineate the area. A portion of the BUA in these areas has been included in the
calculations based on a best estimate of the amount of BUA that will drain to the
treatment swales. The calculations have been revised and included with this
submittal.
7. There are several instances of`stacking"of the swales. This means that several swales(either short, non-crsrb outlet
swales or actual curb outlet swales)are joining together to form one swale and being discharged The water from one
designated curb outlet swale should not be flowing into and joining another designated curb outlet swale since this defeats
one aspect of the intent of low density development by concentrating the runoff The intent is that each impervious road
or parking lot drainage area has its own cwrb outlet swale that discharges to the receiving stream or to wetlands or to
another non-curb outlet Swale. However,I've found a few instances of stacked swales in the previous approved plans so
I have no choice but to allow it again, but for future projects,stacking of the swales will not be permitted
a. The intent of the design was to change as little as possible from the original plan
modification. We understand that swale stacking will not be allowed in the future
and is not a standard design practice in our firm. In future designs each outlet will
have its own treatment swale prior to discharging into the receiving stream.
8. Please make sure that where swales are stacked the drainage area of the last acrb outlet swale in the "stack"includes
the drainage area of all the upstream swales.
a. The total volume of the stacked drainage areas was considered in the calculations
and the treatment swale is sized for the total flow from all contributing drainage
areas.
Red Apple Professional Park * 712 Village Road SW, Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

Ms. Lewis Page Three The Pearl
February 17,2010 Stormwater Comments
9. In the hatched area of the project that is not being revised, located on sheets C-3, C-4, C-7 and C-8, there are no
swales provided to treat the runoff from the inverted crown parking lots located between buildings 2&3,4 &5, 6&
7,and 10 &11. How is that runoff being treated?For that same unrevised development, none of the 5:1 swales that
are noted on the plan are numbered Please number and provide calculations and add them to the drainage area map.
a. The swales have been shown and numbered on the plans and calculations provided.
10. The.spot elevations on the parking lot between Buildings 10 and 11 (Sheet C-3)says the runoff is draining north, but
the flow arrows point south.
a. The spot elevation on the parking lot has been corrected to indicate the proper
direction of flow.
11. There are a few instances where swales are very convoluted, turning back on themselves and/or bucking grade to obtain
the required 100'length. Sharp turns create erosion problems,and bucking grade creates deep swales.However,I again
see where the previous approval allowed these situations to occur. These situations should be re-evaluated to see if an
alternate solution can be provided It may be as simple as relocating the low point of the road Keep in mind that curb
outlet swales are not the only option for low density curbed streets. You are allowed to provide traditional treatment
BMP c or to direct runoff to a 100'long vegetated area where runoff can sheet flow in a diffuse manner across that
100'vegetated area.A level spreader is required to achieve the diffuse flow.
a. Due to the topographic challenges with this development,the circuitous path of the
swales was deemed necessary. Other methods of treatment were considered and
evaluated and it was determined that the 100'vegetated swale is the best treatment
option for this project.
12. Many of the curb outlet swales will end up being piped under the fairways to be discharged to wetlands. The previous
reviewer was apparently unaware that under low density, no portion of the runoff can enter a piped collection ystem to
be discharged and still be permitted as low density. However,as it was previously permitted this way,I again have no
choice but to permit it under this modification. Please evaluate the velocity at the end of any pipes that discharge directly
into wetlands for those portions of the project that have not already been constructed For velocities greater than 2 fps,
please add some type of velocity dissipation structure so that erosion of the wetland is eliminated
a. The piping that is shown under the fairway is shown as existing piping as indicated
in the legend. The piping is carrying water from one side of the fairway to the other
to allow treated drainage water to enter the wetlands. Energy dissipation and level
spreaders will be added as needed to prevent erosion in the wetlands.
13. A piped collection ystem is shown on sheet C-15,just south of the traffic circle and a pipe is shown between Lots 111
and 112 on that same sheet. Piping of this nature is not allowed under the low density option however, the previous
reviewer apparently did not catch this either.If the pipe between Lots 111 and 112 does not currently exist please
either remove or reduce the length of the piping and reestablish the swale, or provide a high density engineered system to
treat that runoff before it enters surface waters or wetlands.
a. The piping is existing and carries water not associated with the proposed BUA& is
bringing golf course and fairway drainage through the site.
14. There are a few instances where swales appear to terminate at elevations that are a foot or more below the existing
ground and are not draining to a wetland or to a receiving stream or to another collection swale. Where will that runoff
go?Please refer to Swales 54, 90 and 93.
a. The swales were shown to terminate at the elevation consistent with the elevation of
the wetlands. After grading the swales will terminate at an elevation that will allow
discharge into the wetlands.
15. Due to the significant application deficiencies,please submit a reapplication fee of$250.
a. A check in the amount of$250.00 has been included with this submittal.
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

Ms. Lewis Page Four The Pearl
February 17,2010 Stormwater Comments
The following items are included with this submittal:
* Two sets of plans relevant to the stormwater submittal, Sheet Ci —Index Sheet,Sheets C2 dim C20
—Stormwater Plan,Sheet C21 —Stormwater Details and DA-MAP—Drainage Area Map.
• One original and one copy of page 2 and table 1 cont'd of the revised Low Density Supplement, SWj
401.
• Two copies of the Stormwater Calculations Sheets 1 —14.
• Check in the amount of$250.00 to cover the remaining permit fee.
Should you have any questions or require any additional information,please contact our office.
Sincerely,
J. Christian Russell,P.E.
Enclosures
pc: Dr.DeCarol Williamson,DWE
Mr. Michael Borton,DWE
File: 1300.02 The Pearl Master Stormwater Plan
regCMIVED
FEB 17 2010
BY:
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

The Pearl
Revised Hydraulic and Hydrologic Calculations
February 2010
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SEAL
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Prepared by:
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East Coast
Engineering & Surveying, PC
Engineers, Planners & Surveyors
Red Apple Professional Park
712 Village Road NW, Suite 105 Post Office Box 2469
Shallotte,North Carolina 28459
Office: 910-754-8029
Firm License Number: C-3014
SU)sg 0310S9 )40
FEB 1 7 2010
r: ress

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-1 Drainage Area= 35,704 SF Q FROM DA-2 Drainage Area= 91,121 SF
Drainage Area= 0.82 Acres Drainage Area= 2.09 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer') Surface Acres GValue aJ
GRASSY 0.49 0.2 GRASSY 1.33 0.2
IMPERVIOUS 0.33 0.9 IMPERVIOUS 0.76 0.9
Total'A' 0.819651056 Total'A' 2.09
Weighted'C' 0.484 I Weighted'C' 0.455 I
Intensity'i' I 7.1 Intensity'i' I 7.1
QI=CiA 2.82 cfs QI=CiA If 6.76 cfs
Q FROM DA-3 Drainage Area= 36,832 SF Q FROM DA-4 Drainage Area= 135,205 SF
Drainage Area= 0.85 Acres Drainage Area= 3.10 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres GValue(+) Surface Acres C-Value w
GRASSY 0.41 0.2 GRASSY 2.16 0.2
IMPERVIOUS 0.44 0.9 IMPERVIOUS 0.95 0.9
Total'A' 0.845546373 Total'A' 3.10387971
Weighted'C' 0.562 I Weighted'C' 0.414 I
Intensity'I' 1 7.1 Intensity'i' I 7.1
QI=CIA 1 3.38 cfs Q,=CiA 9.12 cfs
Q FROM DA-6 Drainage Area= 34,352 SF Q FROM DA-6 Drainage Area= 41,881 SF
Drainage Area= 0.79 Acres Drainage Area= 0.96 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value w Surface Acres C-Value
GRASSY 0.25 0.2 GRASSY 0.57 0.2
IMPERVIOUS 0.54 0.9 IMPERVIOUS 0.39 0.9
Total A' 0.788613407 Total'A' 0.96145546
Weighted'C' 0.682 I Weighted'C' 0.486 J
Intensity'i' I 7.1 Intensity'i' I 7.1
QI=CiA 3.82 cfs Q 3.32 cfs
Q FROM DA-7 Drainage Area= 39,667 SF Q FROM DA-8 Drainage Area= 63,296
Drainage Area= 0.91 Acres Drainage Area= 1.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value w Surface Acres C-Value
GRASSY 0.69 0.2 GRASSY 0.61 0.2
IMPERVIOUS 0.22 0.9 IMPERVIOUS 0.84 0.9
Total A' 0.910629017 Total A' 1.45308333
Weighted'C' 0.368 I Weighted'C' 0.607 I
Intensity'i' 7.1 Intensity'i' I 7.1
Q,=CiA 2.38 cfs Q 6.26 cfs
Q FROM DA-9 Drainage Area= 99,192 Q FROM DA-10 Drainage Area=I 19,500
Drainage Area= 2.28 Acres Drainage Area= 0.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.40 0.2 GRASSY 0.33 0.2
IMPERVIOUS 0.88 0.9 IMPERVIOUS 0.12 0.9
Total A' 2.277134986 Total A' 0.4476584
Weighted'C' 0.470 I Weighted'C' 0.390 I
Intensity'i' 1 7.1 Intensity'i' 7.1
QI=CiA 7.60 cfs QI=CiA I 1.24 cfs
Q FROM DA-11 Drainage Area= 85,296 Q FROM DA-12 Drainage Area= 61,482
Drainage Area= 1.96 Acres Drainage Area= 1.41 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(I) Surface Acres C-Value 0)
GRASSY 1.38 0.2 GRASSY 0.98 0.2
IMPERVIOUS 0.58 0.9 IMPERVIOUS 0.43 0.9
Total A' 1.958126722 Total A' 1.41143251
Weighted'C' 0.407 I Weighted'C' 0.413 1
Intensity'i' I 7.1 Intensity'i' 7.1
QI=CiA 5.66 cfs QI=CiA I 4.13 cfs
CEI
VF `1 2010
1 OF L4 Revision Date:2/1 6120 1 0

The Pearl East Coast Engineering
STORM DRAINAGE FLOW CALCULATIONS g g and Surveying,P.C.
JCR
Q FROM DA-13 Drainage Area= 94,849 Q FROM DA-14 Drainage Area= 19,556 _
Drainage Area= 2.18 Acres Drainage Area= 0.45 Acres
Design Storm= 10 _-YR storm Design Storm= _ 10 -YR storm
Surface Acres C-Value rim Surface Acres C-Value nl
GRASSY 1.37 0.2 GRASSY 0.26 0.2
IMPERVIOUS 0.81 0.9 IMPERVIOUS 0.19 0.9
Total A' 2.177433425 Total'A' 0.44894399
Weighted'C' 0.461 I Weighted'C' 0.489
Intensityl' I 7.1 Intensity'i' I 7.1
Qi=CiA 7-12 cfs Qi=CIA 1.56 cfs
Q FROM DA-15 Drainage Area= 18,782 Q FROM DA-16 Drainage Area= 27,462
Drainage Area= 0.43 Acres Drainage Area= 0.63 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value W Surface Acres C-Value W
GRASSY 0.23 0.2 GRASSY 0.36 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.27 0.9
Total A' 0.43117539 Total'A' 0.63044077
Weighted'C' 0.530 I Weighted'C' 0.495 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CiA 1,62 cfs Qi=CiA I 2,21 cfs
Q FROM DA-17 Drainage Area= 29,952 Q FROM DA-18 Drainage Area= 43,641
Drainage Area= 0.69 Acres Drainage Area= 1.00 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value rIl Surface Acres C-Value l'I
GRASSY 0.34 0.2 GRASSY 0.33 0.2
IMPERVIOUS 0.35 0.9 IMPERVIOUS 0.67 0.9
Total'A' 0.687603306 Total'A' 1.00
Weighted'C' 0.553 I Weighted'C' 0.668 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 2-70 cfs Q,=CiA 4.75 cfs
Q FROM DA-19 Drainage Area= 60,406 Q FROM DA-20 Drainage Area= 57,279
Drainage Area= 1.39 Acres Drainage Area= 1.31 Acres
Design Storm= 10 -YR storm Design Storm= 10 1-YR storm
Surface Acres C-Value hl Surface Acres C-Value/0J
GRASSY 0.67 0.2 GRASSY 0.85 0.2
IMPERVIOUS 0.71 0.9 IMPERVIOUS 0.47 0.9
Total'A' 1.386730946 Total A' 1.3149449
Weighted'C' 0.561 I Weighted'C' 0.449 I
Intensity'i' I 7.1 Intensity'I' 7.1
Qi=CiA 6.52 cfs Qi=CiA I 4.19 cfs
Q FROM DA-21 Drainage Area 93,207 Q FROM DA-22 Drainage Area= 83,295
Drainage Area= 2.14 Acres Drainage Area= 1.91 Acres
Design Storm= _ 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value n!
GRASSY 1.42 0.2 GRASSY 1.17 0.2
IMPERVIOUS 0.72 0.9 IMPERVIOUS 0.74 0.9
Total'A' 2.139738292 Total'A' 1.91219008
Weighted'C' 0.436585 I Weighted'C' 0.470966
Intensity'i' I 7.1 Intensity'I' 7.1
Qi=CiA 6,63 cfs Qi=CiA I 6.39 cfs
Q FROM DA-23 Drainage Area= 65,630 Q FROM DA-24 Drainage Area= 83,344
Drainage Area= _ 1.51 Acres Drainage Area= 1.91 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(') Surface Acres C-Value W
GRASSY 0.85 0.2 GRASSY 1.06 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.86 0.95
Total'A' 1.506657484 Total'A' 1.91331497
Weighted'C' 0.502974 I Weighted'C' 0.536206 I
Intensity'i' I 7.1 Intensity'i' I 7.1 -
7
Q,=CiA 5.38 ,cfs Qi=CiA .28 cfs
FEB 1 7 2010
BY:
Z ____
QF A Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-25 Drainage Area= 149,850 Q FROM DA-26 Drainage Area= 166,791
Drainage Area= 3.44 Acres Drainage Area= 3.83 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value m Surface Acres C-Value r'1
GRASSY 2.11 0.2 GRASSY 2.27 0.2
IMPERVIOUS 1.33 0.9 IMPERVIOUS 1.56 0.9
Total'A' 3.440082645 Total'A' 3.82899449
Weighted'C' 0.470143 I Weighted'C' 0.485328
Intensity'i' I 7.1 Intensity'i' 7.1
QI=CiA If 11 48 cfs QI=CiA 11 13.19 cfs
Q FROM DA-27 Drainage Area= 50,592 Q FROM DA-28 Drainage Area= 21,033
Drainage Area= 1.16 Acres Drainage Area= 0.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value m Surface Acres C-Value r'1
GRASSY 0.71 0.2 GRASSY 0.26 0.2
IMPERVIOUS 0.45 0.9 IMPERVIOUS 0.22 0.9
Total'A' 1.161432507 Total'A' 0.48285124
Weighted'C' 0.472573 I Weighted'C' 0.520862 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Q=CiA 3.90 cfs QI=CIA I 1.79 cfs
Q FROM DA-29 Drainage Area= 126,527 Q FROM DA-30 Drainage Area= 21,993
Drainage Area= 2.90 Acres Drainage Area= 0.50 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value nl Surface Acres C-Valuer+)
GRASSY 1.82 0.2 GRASSY 0.07 0.2
IMPERVIOUS 1.08 0.9 IMPERVIOUS 0.43 0.9
Total A' 2.904660239 Total'A' 0.50488981
Weighted'C' 0.460699 I Weighted'C' 0.802096
Intensity'i' I 7.1 Intensity'i' I 7.1
QI=CiA 1 9.50 cfs QI=CiA 11 2.88 cfs
Q FROM DA-31 Drainage Area= 90,336 Q FROM DA-32 Drainage Area= 75,659
Drainage Area= 2.07 Acres Drainage Area= 1.74 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(') Surface Acres C-Value(1)
GRASSY 0.24 0.2 GRASSY 0.67 0.2
IMPERVIOUS 1.83 0.9 IMPERVIOUS 1.07 0.9
Total A' 2.073829201 Total A' 1.73689164
Weighted'C' 0.818901 I Weighted'C' 0.630331 I
Intensity'i' I 7.1 Intensity'i' I 7.1
QI=CiA 12.06 cfs Qi=CiA If 7.77 cfs
Q FROM DA-33 Drainage Area 24,053 Q FROM DA-34 Drainage Area= 76,727
Drainage Area= 0.55 Acres Drainage Area= 1.76 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.32 0.2 GRASSY 0.97 0.2
IMPERVIOUS 0.24 0.9 IMPERVIOUS 0.79 0.9
Total A' 0.5521809 Total A' 1.76140955
Weighted'C' 0.498998 I Weighted'C' 0.514834 I
Intensity'I' I 7.1 Intensity'i' 7.1
Qi=CiA I 1.96 cfs Qi=CIA , 6.44 cfs
Q FROM DA-35 Drainage Area= 66,342 Q FROM DA-36 Drainage Area= 82,329
Drainage Area= 1.52 Acres Drainage Area= 1.89 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.01 0.2 GRASSY 1.44 0.2
IMPERVIOUS 0.51 0.9 IMPERVIOUS 0.45 0.9
Total'A' 11.523002755 Total A' 1.89001377
Weighted'C' 0.435401 I Weighted'C' 0.36715
Intensity'i' I 7.1 Intensity'I' I 7.1
Qi=CiA 4.71 cfs Qi=CIA I 4.93 cfs
RECEI.VnE)
FEB 1 7 2010
BY: _
OF A. Revision Date:2/1 612 01 0

,
The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-37 Drainage Area= 38,587 Q FROM DA-38 Drainage Area= 147,381
Drainage Area= 0.89 Acres Drainage Area= 3.38 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.41 0.2 GRASSY 2.15 0.2
IMPERVIOUS 0.48 0.9 IMPERVIOUS 1.23 0.9
Total'A' 0.885835629 Total'A' 3.3834022
Weighted'C' ' 0.576077 I Weighted'C' 0.454669 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CIA I 3.62 cfs Qi=CiA I 10.92 cfs
Q FROM DA-39 Drainage Area= 18,805 Q FROM DA-40 Drainage Area= 31,000
Drainage Area= 0.43 Acres Drainage Area= 0.71 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.14 0.2 GRASSY 0.46 0.2
IMPERVIOUS 0.29 0.9 IMPERVIOUS 0.25 0.9
Total'A' 0.431710744 Total'A' ,0.71166208
Weighted'C' 0.670222 I Weighted'C' 0.443035 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 2.05 cfs Qi=CiA 2.24 cfs
Q FROM DA-41 Drainage Area= 66,065 Q FROM DA-42 Drainage Area= 34,702
Drainage Area= 1.52 Acres Drainage Area= 0.80 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.02 0.2 GRASSY 0.55 0.2
IMPERVIOUS 0.50 0.9 IMPERVIOUS 0.24 0.9
Total'A' 1.51664371 Total'A' 0.7966483
Weighted'C' 0.428473 I Weighted'C' 0.41493
Intensity'i' I 7.1 Intensity'I' I 7.1
Qi=CIA I 4.61 cfs Qi=CiA I 2.36 cfs
Q FROM DA-43 Drainage Area= 92,744 Q FROM DA-44 Drainage Area= 95,432
Drainage Area= 2.13 Acres Drainage Area= 2.19 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C Valuo(1)
GRASSY 1.52 0.2 GRASSY 1.61 0.2
IMPERVIOUS 0.61 0.9 IMPERVIOUS 0.58 0.9
Total A' 2.129109275 Total A' 2.19081726
Weighted'C' 0.399764] Weighted'C' 0.385482
Intensity'i' 7.1 Intensity 1' I 7.1
Qi=CiA 1 6.04 cfs Qi=CiA 6.00 cfs
Q FROM DA-46 Drainage Area= 47,166 Q FROM DA-46 Drainage Area= 88,760
Drainage Area= 1.08 Acres Drainage Area= 2.04 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.65 0.2 GRASSY 0.83 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 1.20 0.9
Total'A' 1.082782369 Total'A' 2.03764922
Weighted'C' 0.477991 I Weighted'C' 0.613872 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 3.67 cfs Qi=CiA I 8.88 cfs
Q FROM DA-47 Drainage Area= 41,557 Q FROM DA-48 Drainage Area= 120,902
Drainage Area= 0.95 Acres Drainage Area= 2.78 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.36 0.2 GRASSY 1.85 0.2
IMPERVIOUS 0.60 0.9 IMPERVIOUS 0.93 0.9
Total'A' 0.954017447 Total'A' 2.77552801
Weighted'C' 0.636858 I Weighted'C' 0.433706i
Intensity'i' I 7.1 Intensity'I' I 7.1
Qi=CiA 4.31 cfs Qi=CiA 8 66 cfs
FEB172t`o
T OF I+ Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,
STORM DRAINAGE FLOW CALCULATIONS g g P.C.
JCR
Q FROM DA-49 Drainage Area= 53,699 Q FROM DA-60 Drainage Area= 329,285
Drainage Area= 1.23 Acres Drainage Area= 7.56 Acres
Design Storm= 10 -YR storm Design Storm= _ 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.67 0.2 GRASSY 3.78 0.2
IMPERVIOUS 0.56 0.9 IMPERVIOUS 3.78 0.9
Total'A' 1.232759412 Total'A' 7.55934343
Weighted'C' 0.517457 1 Weighted'C' 0.550239 1
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA I 4.63 cfs Qi=CiA 1 29,53 ,cfs
Q FROM DA-51 Drainage Area= 106,192 Q FROM DA-52 Drainage Area= _ 18,527
Drainage Area= 2.44 Acres Drainage Area= 0.43 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.00 0.2 GRASSY 0.06 0.2
IMPERVIOUS 1.44 0.9 IMPERVIOUS 0.37 0.9
Total'A' 2.437832874 Total'A' 0.4253214
Weighted'C' 0.613374 I Weighted'C' 0.807357
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 10.62 cfs Qi=CiA 2.44 cfs
Q FROM DA-53 Drainage Area= 63,833 Q FROM DA-64 Drainage Area= 112,577
Drainage Area= 1.47 Acres Drainage Area= 2.58 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.81 0.2 GRASSY 1.61 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.97 0.9
Total'A' 1.46540404 Total'A' # 2.5844123
Weighted'C' 0.512161 I Weighted'C' 0.463611
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 5.33 cfs Qi=CIA 8.51 cfs
Q FROM DA-55 Drainage Area= 24,810 Q FROM DA-66 Drainage Area= 64,365
Drainage Area= 0.57 Acres Drainage Area= 1.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Va/ue(1)
GRASSY 0.06 0.2 GRASSY 0.46 0.2
IMPERVIOUS 0.51 0.9 IMPERVIOUS 1.01 0.9
Total'A' 0.569559229 Total'A' 1.47761708
Weighted'C' 0.832003 I Weighted'C' 0.680533
Intensity's' 7.1 Intensity'i' 7.1
Qi=CiA 3.36 cfs Qi=CiA I 7.14 cfs
Q FROM DA-67 Drainage Area= 70,045 Q FROM DA-58 Drainage Area 27,114
Drainage Area= 1.61 Acres Drainage Area 0.62 Acres
Design Storm= 10 _-YR storm Design Storm= 10 _-YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.14 0.2 GRASSY 0.05 0.2
IMPERVIOUS 1.47 0.9 IMPERVIOUS 0.57 0.9
Total'A' 1.608011938 Total A' 0.62245179
Weighted'C' 0.839269 I Weighted'C' 0.844984 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 9.58 cfs Qi=CIA 3.73 cfs
Q FROM DA-59 Drainage Area= 173,603 Q FROM DA-60 Drainage Area= 76,762
Drainage Area= 3.99 Acres Drainage Area= 1.76 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.75 0.2 GRASSY 0.78 0.2
IMPERVIOUS 2.24 0.9 IMPERVIOUS 0.99 0.9
Total A' 3.985376492 Total'A' 1.76221304
Weighted'C' 0.593122 I Weighted'C' 0.59192 I
Intensity's' I 7.1 Intensity'i' I 7.1
Qi=CiA 16.78 cfs Qi=CiA 7.41 cfs
BY:
OF Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-61 Drainage Area= 158,342 Q FROM DA-62 Drainage Area= 29,640
Drainage Area= 3.59 Acres Drainage Area= 0.68 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 2.02 0.2 GRASSY 0.25 0.2
IMPERVIOUS 1.57 0.9 IMPERVIOUS 0.43 0.9
Total'A' 3.589118457 Total'A' 0.68044077
Weighted'C' 0.506964 I Weighted'C' 0.640027 I
Intensity's' I 7.1 Intensity'i' I 7.1
Qi=CiA l 12.92 cfs Qi=CIA I 3.09 cfs
Q FROM DA-63 Drainage Area= 36,936 Q FROM DA-64 Drainage Area= 39,375
Drainage Area= 0.85 Acres Drainage Area= 0.90 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.19 0.2 GRASSY 0.11 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.80 0.9
Total A' 0.847933884 Total'A' 10.90392562
Weighted'C' 0.739744 I Weighted'C' 0.8184 I
Intensity's' I 7.1 Intensity'i' I 7.1
Qi=CiA 4.45 cfs Qi=CIA 5,25 cfs
Q FROM DA-65 Drainage Area= 42,139 Q FROM DA-66 Drainage Area= 74,054
Drainage Area= 0.97 Acres Drainage Area= 1.70 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.42 0.2 GRASSY 0.93 0.2
IMPERVIOUS 0.55 0.9 IMPERVIOUS 0.77 0.9
Total'A' 0.967378329 Total'A' 1.70004591
Weighted'C' 0.596255 I Weighted'C' 0.517058 I
Intensity'I' I 7.1 Intensity'i' I 7.1
Qi=CiA 4.10 cfs Qi=CIA 6.24 cfs
Q FROM DA-67 Drainage Area= 66,446 Q FROM DA-68 Drainage Area 50,241
Drainage Area= 1.53 Acres Drainage Area 1.15 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C Value(1) Surface Acres C-Value(1)
GRASSY 0.58 0.2 GRASSY 0.57 0.2
IMPERVIOUS 0.95 0.9 IMPERVIOUS 0.58 0.9
Total'A' 1.525390266 Total'A' 1.15337466
Weighted'C' 0.634774 I Weighted'C' 0.55487 I
Intensity's' I 7.1 Intensity'i' 7.1
Qi=CiA 6.87 cfs Qi=CiA I 4.54 cfs
Q FROM DA-89 Drainage Area 127,863 Q FROM DA-70 Drainage Area= 42,830
Drainage Area= 2.94 Acres Drainage Area= 0.98 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.56 0.2 GRASSY 0.42 0.2
IMPERVIOUS 1.37 0.9 IMPERVIOUS 0.56 0.9
Total'A' 2.935330579 Total A' 0.98324151
Weighted'C' 0.527885 I Weighted'C' 0.599668
Intensity'I' I 7.1 Intensity'i' I 7.1
Qi=CiA 11.00 cfs Qi=CiA 4.19 cfs
Q FROM DA-71 Drainage Area= 42,099 Q FROM DA-72 Drainage Area= 24,733 _
Drainage Area= 0.97 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.35 0.2 GRASSY 0.03 0.2
IMPERVIOUS 0.61 0.9 IMPERVIOUS 0.54 0.9
Total'A' 0.966460055 Total'A' 0.56779155
Weighted'C' 0.643837 I Weighted'C' 0.864707 I
Intensity'i' I 7.1 Intensity's' I 7.1
Qi=CiA 4.42 cfs Qi=CiA 3.49 cfs
y�c 1-
FEB 1 7 2010
OF 1+ Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-73 Drainage Area= 48,556 Q FROM DA-74 Drainage Area= 13,741
Drainage Area= 1.11 Acres Drainage Area= 0.32 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.45 0.2 GRASSY 0.08 0.2
IMPERVIOUS 0.66 0.9 IMPERVIOUS 0.24 0.9
Total'A' 1.114692378 Total'A' 0.31544995
Weighted'C' 0.614528 I Weighted'C' 0.725879 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 4.86 cfs Qi=CiA L 1.63 cfs
Q FROM DA-76 Drainage Area= 11,122 Q FROM DA-76 Drainage Area= 15,730
Drainage Area= 0.26 Acres Drainage Area= 0.36 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.05 0.2 GRASSY 0.04 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.33 0.9
Total A' 0.255325987 Total A' 0.36111111
Weighted'C' 0.755934 I Weighted'C' 0.831113 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 1.37 cfs Qi=CiA 213 cfs
Q FROM DA-77 Drainage Area= 65,141 Q FROM DA-78 Drainage Area= 27,694
Drainage Area= 1.50 Acres Drainage Area= 0.64 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.69 0.2 GRASSY 0.29 0.2
IMPERVIOUS 0.80 0.9 IMPERVIOUS 0.35 0.9
Total A' 1.495431589 Total'A' 0.63576676
Weighted'C' 0.575334 I Weighted'C' 0.585311 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CIA I 6.11 cfs Qi=CiA 2.64 cfs
Q FROM DA-79 Drainage Area= 43,202 Q FROM DA-80 Drainage Area= 21,754
Drainage Area= 0.99 Acres Drainage Area= 0.50 Acres
Design Storm= _ 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.44 0.2 GRASSY 0.05 0.2
IMPERVIOUS 0.55 0.9 IMPERVIOUS 0.45 0.9
Total A' 0.991781451 Total A' 0.49940312
Weighted'C' 0.587899 I Weighted'C' 0.826795 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CiA 4.14 cfs Qi=CiA I 2.93 cfs
Q FROM DA-81 Drainage Area= 30,446 Q FROM DA-82 Drainage Area= 95,436
Drainage Area= 0.70 Acres Drainage Area= 2.19 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.27 0.2 GRASSY 1.05 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 1.14 0.9
Total'A' 0.698943985 Total'A' 2.19090909
Weighted'C' 0.627412 I Weighted'C' 0.563635
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 3.11 cfs Qi=CiA 8.77 cfs
Q FROM DA-83 Drainage Area= 139,878 SF
Drainage Area= 3.21 Acres
Design Storm= 10 -YR storm
Surface Acres C-Value(+1
GRASSY 1.79 0.2
IMPERVIOUS 1.42 0.9
Total A' 3.21
Weighted'C' 0.510 I
Intensity'i' 1 7.1
Q;=CiA 11 63 cfs
C,r iV -jD
FEB 1 7 2010
BY:
i _OF 1 4 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-84 Drainage Area= 13,407 SF Q FROM DA-85 Drainage Area= 20,664 SF
Drainage Area= 0.31 Acres Drainage Area= 0.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value n/ Surface Acres C-Value m
GRASSY 0.10 0.2 GRASSY 0.24 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.24 0.9
Total'A' 0.307782369 Total'A' •0.47897153
Weighted'C' 0.666 I Weighted'C' 0.549 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CiA 1.46 cfs Qi=CiA ' 1.87 cfs
Q FROM DA-86 Drainage Area= 93,326 SF Q FROM DA-87 Drainage Area= 22,182 SF
Drainage Area= - 2.14 Acres Drainage Area= 0.51 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'l Surface Acres C-Value
GRASSY 1.03 0.2 GRASSY 0.00 0.2
IMPERVIOUS 1.11 0.9 IMPERVIOUS 0.51 0.9
Total A' 2.142470156 Total'A' 0.50922865
Weighted'C' 0.564 I Weighted'C' 0.900 I
Intensity'i' 7.1 Intensity's' 7.1
Q;=CIA 8.57 cfs Q,=CiA 3.25 cfs
Q FROM DA-88 Drainage Area= 53,836 Q FROM DA-89 Drainage Area= 27,071
Drainage Area= 1.24 Acres Drainage Area= 0.62 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value nl Surface Acres C-Valuer+l
GRASSY 0.76 0.2 GRASSY 0.29 0.2
IMPERVIOUS 0.48 0.9 IMPERVIOUS 0.33 0.9
Total A' 1.2359045 Total A' 0.62146465
Weighted'C' 0.470 I Weighted'C' 0.577 I
Intensity's' I 7.1 Intensity'i' I 7.1
Q;=CiA fl 4.12 cfs Q;=CiA ff 2.55 cfs
Q FROM DA-90 Drainage Area= 18,492 Q FROM DA-91 Drainage Area= 26,321
Drainage Area= 0.42 Acres Drainage Area= 0.60 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer0/ Surface Acres C-Valuet'/
GRASSY 0.00 0.2 GRASSY 0.42 0.2
IMPERVIOUS 0.42 0.9 IMPERVIOUS 0.19 0.9
Total'A' 0.424517906 Total'A' 0.60424702
Weighted'C' 0.900 I Weighted'C' 0.416 I
Intensity's' I 7.1 Intensity'i' I 7.1
Qi=CiA fl 2.71 cfs Qi=CiA 11 1.78 cfs
Q FROM DA-92 Drainage Area= 79,522 Q FROM DA-93 Drainage Area= 55,964
Drainage Area= 1.83 Acres Drainage Area= 1.28 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r0l Surface Acres C-Value rtl
GRASSY 1.03 0.2 GRASSY 0.67 0.2
IMPERVIOUS 0.79 0.9 IMPERVIOUS 0.61 0.9
Total'A' 1.825573921 Total A' 11.28475666
Weighted'C' 0.503 I Weighted'C' 0.534 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 6.52 cfs Qi=CiA 4.87 cfs
Q FROM DA-94 Drainage Area= 68,323 Q FROM DA-95 Drainage Area= 55,916 _
Drainage Area= 1.57 Acres Drainage Area= 1.28 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value n/ Surface Acres C-Value ry
GRASSY 0.91 0.2 GRASSY 0.77 0.2
IMPERVIOUS 0.66 0.9 IMPERVIOUS 0.51 0.9
Total A' 1.568480257 Total'A' 1.28365473
Weighted'C' 0.493 I Weighted'C' 0.480 I
Intensity's' 4 7.1 Intensity'i' I 7.1
Qi=CiA 5.49 cfs Q, CiA II 4.37 cfs
I T er��d�ryED
FEB© 1 ! L 41Q
BY:
g_OF.131.- Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-96 Drainage Area= 76,708 Q FROM DA-97 Drainage Area= 96,653
Drainage Area= 1.76 Acres Drainage Area= 2.22 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuerlr Surface Acres C-Valuer'l
GRASSY 1.37 0.2 GRASSY 1.46 I 0.2
IMPERVIOUS 0.39 0.9 IMPERVIOUS 0.76 0.9
Total A' 1.76097337 Total'A' 2.21884757
Weighted'C' 0.355 I Weighted'C' 0.438 .I
Intensity's' 7.1 Intensity's' 7.1
CI,=CiA 443 cfs Qi=CiA 6-91 cfs
Q FROM DA-98 Drainage Area= 103,276 Q FROM DA-99 Drainage Area= 25,001
Drainage Area= 2.37 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value w Surface Acres C-Value
GRASSY 1.64 0.2 GRASSY 0.04 0.2
IMPERVIOUS 0.73 0.9 IMPERVIOUS 0.53 0.9
Total A' 2.370890725 Total A' 0.57394399
Weighted'C' 0.415 I Weighted'C' 0.850 I
Intensity'i' I 7.1 Intensity'i' ! 7.1
Q=CiA II 6.99 cfs Qi=CiA 3.47 cfs
Q FROM DA-100 Drainage Area= 22,230 Q FROM DA-101 Drainage Area= 63,270
Drainage Area= 0.51 Acres Drainage Area= 1.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value m Surface Acres C-Value
GRASSY 0.27 0.2 GRASSY 0.62 0.2
IMPERVIOUS 0.24 0.9 IMPERVIOUS 0.83 0.9
Total A' 0.510330579 Total'A' 1.45247934
Weighted'C' 0.53309 I Weighted'C' 0.601944 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CIA 1.93 cfs Q,=CiA 6.21 cfs
Q FROM DA-102 Drainage Area 37,286 Q FROM DA-103 Drainage Area= 6,865
Drainage Area= 0.86 Acres Drainage Area= 0.16 Acres
Design Storm= 10 -YR storm Design Storm= I 10 -YR storm
Surface Acres C-Valuem Surface Acres C-Valuew
GRASSY 0.44 0.2 GRASSY 0.00 0.2
IMPERVIOUS 0.41 0.9 IMPERVIOUS 0.16 0.95
Total'A' 0.855968779 Total'A' 0.15759871
Weighted'C' 0.537215 I Weighted'C' 0.95 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA If 3.26 cfs Q;=CiA If 1.06 cfs
Q FROM DA-104 Drainage Area= 19,358 Q FROM DA-106 Drainage Area= 24,210
Drainage Area= 0.44 Acres Drainage Area= 0.56 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-ValueW Surface Acres C-ValueW
GRASSY 0.21 0.2 GRASSY 0.38 0.2
IMPERVIOUS 0.23 0.9 IMPERVIOUS 0.18 0.9
Total A' 0.444398531 Total'A' 0.65578512
Weighted'C' 0.563596 I Weighted'C' 0.421912 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CiA 1.78 cfs Qi=CiA 1.66 cfs
Q FROM DA-106 Drainage Area= 24,534 Q FROM DA-107 Drainage Area= 79,960
Drainage Area= 0.56 Acres Drainage Area= 1.84 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value w Surface Acres C-Value r+1
GRASSY 0.35 0.2 GRASSY 1.37 0.2
IMPERVIOUS 0.21 0.9 IMPERVIOUS 0.46 0.9
Total A' 0.56322314 Total'A' 1.83562902
Weighted'C' 0.461352 I Weighted'C' 0.37655 I
Intensity'i' 4 7.1 Intensity's' I 7.1
Qi=CIA I 1.84 cfs Cr=CiA 4.91 cfs
FEB 1 7 2010
(1
OF a Revision Date:2/1 612 01 0

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-108 Drainage Area= 82,167 Q FROM DA-109 Drainage Area= 70,627
Drainage Area= 1.89 Acres Drainage Area= 1.62 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value m Surface Acres C-Value m
GRASSY 1.39 0.2 GRASSY 0.32 0.2
IMPERVIOUS 0.49 0.9 IMPERVIOUS 1.30 0.9
Total A' 1.886294766 Total A' 1.62137282
Weighted'C' . 0.382508 I Weighted'C' 0.759984 I
Intensity'i' I 7.1 Intensity'I I 7.1 ids
Qi=CiA f 5.12 cfs Qi=CiA 11 8.75
Q FROM DA-110 Drainage Area= 48,378 Q FROM DA-111 Drainage Area= 33,974
Drainage Area= _ 1.11 Acres Drainage Area= _ 0.78 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Valuer'!
GRASSY 0.88 0.2 GRASSY 0.60 0.2
IMPERVIOUS 0.23 0.9 IMPERVIOUS 0.77993572
0.18 0.9
A Total'A' 1.110606061 Total '
Weighted'C' 0.346676 I Weighted'C' 0.363451 I
Intensity'i' 1 7.1 Intensity'i' I 7.1
Q,=CiA 2.73 cfs Q;=CiA 2 01 cfs
Q FROM DA-112 Drainage Area= 44,941 Q FROM DA-113 Drainage Area= 43,763
Drainage Area= 1.03 Acres Drainage Area= 1.00 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer'! Surface Acres C-Value nl
GRASSY 0.76 0.2 GRASSY 0.74 0.2
IMPERVIOUS 0.27 0.9 IMPERVIOUS 0.26 0.9
Total A' 1.031703398 Total'A' 1.00466024
Weighted'C' 0.381694 I Weighted'C' 0.38217 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 2.80 cfs Q;=CiA 2.73 cfs
Q FROM DA-114 Drainage Area 31,572 Q FROM DA-116 Drainage Area= 60,192
Drainage Area 0.72 Acres Drainage Area= 1.38 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value w
GRASSY 0.45 0.2 GRASSY 0.86 0.2
IMPERVIOUS 0.28 0.9 IMPERVIOUS 0.53 0.9
Total A' 0.724793388 Total'A' 1.38181818
Weighted'C' 0.467633 I Weighted'C' 0.466349 I
Intensity 1' I 7.1 Intensity'i' I 7.1
Qi=CiA 2.41 cfs Q;=CiA 4.58 cfs
Q FROM DA-118 Drainage Area= 43,434 Q FROM DA-117 Drainage Area= 15,301
Drainage Area- 1.00 Acres Drainage Area= 0.35 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer+! Surface Acres C-Value n)
GRASSY 0.61 0.2 GRASSY 0.18 0.2
IMPERVIOUS 0.39 0.9 IMPERVIOUS 0.17 0.9
Total A' 0.997107438 Total'A' 0.35126263
Weighted'C' 0.471771 I Weighted'C' 0.536481 I
Intensity'i' I 7.1 Intensity 1' I 7.1
Qi=CiA 3 34 cfs Qi=CiA 1.34 cfs
Q FROM DA-118 Drainage Area= 19,228 Q FROM DA-119 Drainage Area= 25,033
Drainage Area= 0.44 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value W Surface Acres C-Value m
GRASSY 0.28 0.2 GRASSY 0.35 0.2
IMPERVIOUS 0.16 0.9 IMPERVIOUS 0.22 0.9
Total A' 0.441414141 Total A' 0.5746786
Weighted'C' 0.458004 I Weighted'C' 0.472081 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi CiA 1.44 cfs Q,=CiA 1,93 cfs
FE9 1 7 2010
7-,•c,r.
IQOF 14 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-120 Drainage Area= 24,155 Q FROM DA-121 Drainage Area= 128,465
Drainage Area= 0.55 Acres Drainage Area= 2.95 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value_(1) Surface Acres C-Value r1)
GRASSY 0.36 0.2 GRASSY 1.71 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 1.24 0.9
Total A' 0.554522498 Total'A' 2.9491506
Weighted'C' 0.451803 I Weighted'C' 0.493808
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA Il 1 78 cfs Q;=CiA 10.34 cfs
Q FROM DA-122 Drainage Area= 64,711 Q FROM DA-123 Drainage Area= 49,611
Drainage Area= 1.49 Acres Drainage Area= 1.14 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.89 0.2 GRASSY 0.48 0.2
IMPERVIOUS 0.60 0.9 IMPERVIOUS 0.66 0.9
Total'A' 1.485560147 Total A' 1.13891185
Weighted'C' 0.480883 I Weighted'C' 0.606587
Intensity'i' 7.1 Intensity's' 7.1
Qi=CiA ' 5 07 cfs Qi=CiA 4.91 cfs
Q FROM DA-124 Drainage Area= 32,950 Q FROM DA-125 Drainage Area= 60,669
Drainage Area= 0.76 Acres Drainage Area= 1.39 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuelli Surface Acres C-Valuel'I
GRASSY 0.33 0.2 GRASSY 0.71 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 0.68 0.9
Total A' 0.756427916 Total'A' 1.3927686
Weighted'C' 0.598352 I Weighted'C' 0.542933
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CiA ' 3.21 cfs CI,=CiA 5.37 cfs
Q FROM DA-126 Drainage Area= 91,117 Q FROM DA-127 Drainage Area 115,396
Drainage Area= 2.09 Acres Drainage Area= 2.65 Acres
Design Storm= 10 I-YR storm Design Storm= 10 I-YR storm
Surface Acres C-Value r1J Surface Acres C-Value 11l
GRASSY 1.34 0.2 GRASSY 1.33 0.2
IMPERVIOUS 0.75 0.9 IMPERVIOUS 1.32 0.9
Total A' 2.091758494 Total'A' 2.64912764
Weighted'C' 0.450862 I Weighted'C' 0.548775
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 6.70 cfs Qi=CiA 10.32 cfs
Q FROM DA-128 Drainage Area- 95,097 Q FROM DA-129 Drainage Area_ 215,850
Drainage Area= 2.18 Acres Drainage Area= 4.96 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value 111 Surface Acres C-Value ly
GRASSY 1.00 0.2 GRASSY 3.14 0.2
IMPERVIOUS 1.18 0.9 IMPERVIOUS 1.82 0.9
Total'A' 2.183126722 Total A' 4.95523416
Weighted'C' 0.578277 I Weighted'C' 0.456913
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 8.96 cfs Qi=CiA 16.08 cfs
Q FROM DA-130 Drainage Area= 8,475 Q FROM DA-131 Drainage Area= 69,840
Drainage Area= 0.19 Acres Drainage Area= 1.60 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value 111 Surface Acres C-Value
GRASSY 0.09 0.2 GRASSY 1.09 0.2
IMPERVIOUS 0.10 0.9 IMPERVIOUS 0.52 0.9
Total'A' 0.194559229 Total'A' 1.60330679
Weighted'C' 0.577628 I Weighted'C' 0.425275 I
Intensity's' 7.1 Intensity'i' 7.1
Q;=CiA I 0-80 cfs Q 4.84 cfs
Q FROM DAB i32 Drainage Area= 106,784
Drainage Area= 2.45 Acres
Design Storm= 10 -YR storm „-4 l� .r��
Surface Acres C-Va/uen� .
GRASSY 1.78 0.2
IMPERVIOUS 0.88 0.9 FEE 1 7 -
Total A' 2.451423324
Weighted'C' 0.393066 I ice.
Intensity's' 7.1 1
Q;=CiA I 6.84 ref.
_LL OF A- Revision Date:2/16/2010

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DWQ USE ONLY
Date Received Fee Paid Permit Number
I -20IO
Applicable Rules: ❑Coastal SW-1995 ❑Coastal SW-2008 ❑Ph II-Post Construction
(select all that apply) ❑Non-Coastal SW-HQW/ORW Waters ❑Universal Stormwater Management Plan
❑Other WQ Mgmt Plan:
State of North Carolina G r
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Project Name(subdivision,facility,or establishment name-should be consistent with project name on plans,
specifications,letters,operation and maintenance agreements,etc.):
The Pearl
2. Location of Project(street address):
NC Hwy 179(Old Georgetown Road)
City: Calabash County: Brunswick Zip: 28467
3. Directions to project(from nearest major intersection):
Appoximately 3 miles south of the intersection of NC hwy 179 and NC Hwy 904,project on the left.
4. Latitude:33° 53.99' "N Longitude: 78°32.01' "W of the main entrance to the project.
II. PERMIT INFORMATION:
1.a.Specify whether project is(check one): ['New ®Modification
b.If this application is being submitted as the result of a modification to an existing permit,list the existing
permit number SW8 031059MOD ,its issue date(if known) 5/18/04 ,and the status of
construction: ❑Not Started ®Partially Completed* ❑Completed* *provide a designer's certification
2. Specify the type of project(check one):
/1 Low Density ['High Density ❑Drains to an Offsite Stormwater System ['Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application,list the stormwater project number,if
assigned, and the previous name of the project,if different than currently
proposed,
4.a.Additional Project Requirements(check applicable blanks;information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
[LAMA Major ❑Sedimentation/Erosion Control: ac of Disturbed Area
❑NPDES Industrial Stormwater 0404/401 Permit:Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name,Project/Permit Number,
issue date and the type of each permit:
RECEIVED
-1644--1-11131-7
Form SWU-101 Version 07July2009 Page 1 of 6 BY;

III. CONTACT INFORMATION
1.a.Print Applicant/ Signing Official's name and title(specifically the developer,property owner,lessee,
designated government official,individual,etc.who owns the project):
Applicant/Organization: DeCarol Williamson Enterprises
Signing Official&Title: Owner
b.Contact information for person listed in item la above:
Street Address: 2618 New Village Way
City: Wilmington State: NC Zip: 28405
Mailing Address(if applicable): SAME
City: State: Zip:
Phone: ( 910 ) 251-7721 Fax: ( )
Email:
c.Please check the appropriate box.The applicant listed above is:
®The property owner(Skip to Contact Information,item 3a)
❑ Lessee*(Attach a copy of the lease agreement and complete Contact Information,item 2a and 2b below)
❑Purchaser*(Attach a copy of the pending sales agreement and complete Contact Information,item 2a and
2b below)
❑Developer*(Complete Contact Information,item 2a and 2b below.)
2.a.Print Property Owner's name and title below,if you are the lessee,purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official&Title:
b.Contact information for person listed in item 2a above:
Street Address:
City: State: Zip:
Mailing Address(if applicable):
City: State: Zip:
Phone: ( ) Fax: ( )
Email:
3.a. (Optional)Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project
Other Contact Person/Organization: Tyler Phillips-East Coast Engineering&Surveying.PC
Signing Official&Title:
b.Contact information for person listed in item 3a above:
Mailing Address: PO Box 2469
City: Shallotte State: NC Zip: 28459
Phone: ( 910 ) 754-8029 Fax: ( 910 ) 754-8049
Email: [e-mail]
4. Local jurisdiction for building permits: Calabash,NC
Point of Contact: Stanley Dills Phone#: (910 ) 579-6747
RECEIVED
JAN 1 9 2010
Form SWU-101 Version 07Ju1y2009 Page 2 of 6
BY:

IV. PROJECT INFORMATION
1. In the space provided below,briefly summarize how the stormwater runoff will be treated.
Stormwater will sheet flow to 5:1 treatment swales via natural drainage and curb cuts.
2.a.If claiming vested rights,identify the supporting documents provided and the date they were approved:
❑Approval of a Site Specific Development Plan or PUD Approval Date:
❑Valid Building Permit Issued Date:
®Other: #SW8 031059MOD Date: 5/18/04
b.Identify the regulation(s)the project has been designed in accordance with:
®Coastal SW-1995 ❑ Ph II-Post Construction
3. Stormwater runoff from this project drains to the Lumber River basin.
4. Total Property Area: 806.13 acres 5. Total Coastal Wetlands Area: acres
6. Total Surface Water Area: acres
7. Total Property Area(4)-Total Coastal Wetlands Area(5)-Total Surface Water Area(6)=Total Project
Area+: 806.13 acres
+ Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water(NHW)line or Mean High Water
(MHW)line,and coastal wetlands landward from the NHW(or MHVV)line. The resultant project area is used to
calculate overall percent built upon area(BUA). Non-coastal wetlands landward of the NHW(or MHW)Iine may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area/Total Project Area)X 100 = 25 %
9. How many drainage areas does the project have? 1 (For high density,count 1 for each proposed engineered
stormwater BMP. For low density and other projects,use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project,attach an additional sheet with the information for each area
provided in the same format as below.
Basin Information Drainage Area 1 Drainage Area_ Drainage Area_ Drainage Area_
Receiving Stream Name Calabash
Stream Class * SA
Stream Index Number* 15-25-13
Total Drainage Area(sf) 35,115,023
On-site Drainage Area(sf) 35,115,023
Off-site Drainage Area(sf) 0
Proposed Impervious Area**(sf) 8,778,756
% Impervious Area**(total) 25
Impervious".Surface Area Drainage Area 1 Drainage Area Drainage Area_ Drainage Area_
On-site Buildings/Lots(sf) 3,114,977
On-site Streets (sf) 3,329,991
On-site Parking (sf)
On-site Sidewalks (sf) 708,080
Other on-site (sf) _ 925,120
Future(sf) 700,588
Off-site (sf)
Existing BUA***(sf) _--."-
Total (sf): 8,778,756
* Stream Class and Index Number can be.determined at: http://h2o.enr.slate.nc.us/bims/reports/reportsWB.html
** Impervious area is defined as the built upon area including,but not limited to,buildings,roads,par " areas
sidewalks,gravel areas,etc. -�
***Report only that amount of existing BUA that will remain after development.Do not report any exis ng BLlA that���
is to be removed and which will be replaced by new BUA. J A N 1 9 2010
Form SWU-101 Version 07July2009 Page 3 of 6

11. How was the off-site impervious area listed above determined?Provide documentation.N/A
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened&
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B.0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance(O&M)forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://h2o.enr.state.nc.us/su/bmp forms.htm.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality(DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from http://h2o.enr.state.nc.us/su/bmp forms.htm. The complete application
package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating
project on the interactive online map at http://h2o.enr.state.nc.us/su/msi maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item.All original documents MUST be signed and initialed in blue ink. Download the latest versions for
each submitted application package from http://h2o.enr.state.nc.us/su/bmp forms.htm.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions&Protective Covenants
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed,signed and dated)and O&M Q7..
agreement(s)for each BMP.
4. Permit application processing fee of$505 payable to NCDENR. (For an Express review,refer to /VA*
http://www.envhelp.org/pages/onestopexpress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.) //��,,yy��
5. A detailed narrative(one to two pages)describing the stormwater treatment/managementfor IVf�rIJuG.
the project. This is required in addition to the brief summary provided in the Project
Information,item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the 00-.3DXL
receiving stream drains to class SA waters within 1/2 mile of the site boundary,include the 1/2
mile radius on the map.
7. Sealed,signed and dated calculations.
8. Two sets of plans folded to 8.5"x 14" (sealed,signed,&dated),including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures,the banks of streams and rivers,the MHW or NHW line of tidal
waters,and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures,the banks of streams or rivers,and the MHW(or NHW)of tidal waters.
i. Dimensioned property/project boundary with bearings&distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours,proposed contours,spot elevations,finished floor elevations.
1. Details of roads,drainage features,collection systems,and stormwater control measures.
m.Wetlands delineated,or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.n. Existing drainage(including off-site),drainage easements,pipe sizes,runoff calculations.
o. Drainage areas delineated(included in the main set of plans,not as a separate document). ,JAN 1 9 2010
p. Vegetated buffers(where required).
Form SWU-101 Version 07Ju1y2009 Page 4 of 6 BY.

9. Copy of any applicable soils report with the associated SHWT elevations(Please identify A/ -(t
elevations in addition to depths)as well as a map of the boring locations with the existing
elevations and boring logs.Include an 8.5"x11"copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs,the report should also
include the soil type,expected infiltration rate,and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO:Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed.Deed book: Page No:
11. For corporations and limited liability corporations(LLC):Provide documentation from the NC
Secretary of State or other official documentation,which supports the titles and positions held
by the persons listed in Contact Information,item la,2a,and/or 3a per NCAC 2H.1003(e).The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State,otherwise the application will be returned.
http://www.secretary.state.nc.us/Corporations/CSearch.aspx
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions,outparcels,and future development,the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary,a table listing each lot number,lot size,and the allowable built-upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://h2o.enr.state.nc.us/su/bmp forms.htm#deed restrictions.Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner,it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s)below,the permit holder(s)certify that the recorded property restrictions and
protective covenants for this project,if required,shall include all the items required in the permit and listed
on the forms available on the website,that the covenants will be binding on all parties and persons claiming
under them,that they will run with the land,that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant Complete this section if you wish to designate authority to another individual and/or firm(such as a
consulting engineer and/or firm)so that they may provide information on your behalf for this project(such as
addressing requests for additional information).
Consulting Engineer: T.Christian Russell,PE
Consulting Firm: East Coast Engineering&Surveying,PC
Mailing Address: PO Box 2469
City: Shallotte State: NC Zip: 28459
Phone: ( 910 ) 754-8029 Fax: ( 910 ) 754-8049
Email: [e-mail]
IX. PROPERTY OWNER AUTHORIZATION(if Contact Information, item 2 has been filled out,complete this
section)
I,(print or type name of person listed in Contact Information,item 2a) ,certify that I
own the property identified in this permit application,and thus give permission to(print or type name of person
listed in Contact Information,item la) with(print or type name of organization listed in
Contact Information, item 1b) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal,which indicates the
party responsible for the operation and maintenance of the stormwater system.
RECEIVED
JANI92010
Form SWU-101 Version 07Ju1S2009 Page 5 of 6
BY:

X. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in Contact Information,item 2)
certify that the information included on this permit application form is,to the best of my knowledge,correct and
that the project will be constructed in conformance with the approved plans,that the required deed restrictions
and protective covenants . ill berecorded,and that the proposed project complies with the requirements of the
applicable stor e 1 der 5 NCAC 2H.1000,SL 2006-246(Ph.II-Post Construction)or SL 2008-211.
.r.�Signature: L' Date:
I;. ?t A- 14-• .U 12-13EA/ ,a -
Notary ART/4 for the State of C}f/Cat4)L4A,County of
NEA&) I Ci�tn� do hereby certify that DI • -De C.a,►"v f Rid/ ll irlSasl personally appeared
before me this II qay of . j Gl rl Uo.rt./ , I010 ,and ac owledge a due execution of the application for
a stormwater permit. Witness my hand and official seal, 1
o3qmuu���d
\ti st—°'' ...,*S SEAL
Q . Y .
•
• pTARY..a
.
. ( L- • �, My commission expires j /13
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•
(RECEIVED
Form SWU-101 Version 07July2009 Page+oft
JAN 1 9 2010

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can be
found in Session Law 2008-211, 15A NCAC 2H .1000, Session Law 2006-246, and the DWQ BMP Manual.
Curb and gutter systems are allowed provided they meet the requirements in 15A NCAC 2H .1008(g).
I. PROJECT INFORMATION
Project Name : The Pearl
Contact Person: Dr. DeCarol Williamson Phone Number: ( 910 ) 251-7721
Number of Lots:355 Allowable Built Upon Area(BUA) Per Lot*:See Attachment "A"
Number of Dwelling Units Per Acre**:
Low Density Development(check one): ❑ without curb &gutter ® with curb& gutter, outlets to (check one):
Swales ❑ Vegetated Area
*If lot sizes are not uniform,attach a table indicating the number of lots,lot sizes and allowable built upon area for each lot.
The attachment must include the project name,phase,page numbers and provide area subtotals and totals. BUA shall be
shown in units of square feet.
**(Phase II Post-Construction(non-SA)only)
II. BUILT UPON AREA
Refer to DWQ's forms and applications website for specific language that must be recorded in the deed
restrictions for all subdivided projects. (http://h2o.enr.state.nc.us/su/bmp_forms.htm)
Complete the following calculation in the space provided below where:
• SA Site Area-the total project area above Mean High Water.
• DF Density Factor- the appropriate percent built upon area divided by 100.
• RA Road Area-the total impervious surface occupied by roadways.
• OA Other Area-the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. of Lots -the total number of lots in the subdivision.
• BUA per Lot-the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front lot line and the edge of pavement.
• Total allowable lot BUA -the computed allowable built upon area for all lots combined.
• Total BUA from lot listing-the sum of built upon area allo h lot on the lis •- lots.
Form SW401-Low Density-Rev.4-20090ct20 Page 1 of 4 JAN 1 9
2010

a
Calculation:
For uniform lot sizes:
cSA: ft2 x DF: )-(RA: ft2)-(OA: ft2) =BUA per Lot= ft2
(No of Lots: )
For non-uniform lot sizes:
a. (SA: 35115023 ft2 DF: 0.25)-(RA: 3329991 ft2)-(OA: 3654865 ft2) =Total allowable lot BUA=
1793900 ft2
b. Total BUA from lot listing: 1793900sf. b must be<a
III. DESIGN INFORMATION
Complete the following table. If additional space is needed the information should be provided in the same
format as Table 1 and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual or at
http://hdsc.nws.noaa.gov/hdsc/pfds/
Table 1. Swale design information based on the 10-year storm.
Swale No. Drainage Impervious Grassed C Q Slope V V
allow actual Flow
Area(ac) Area(ac) Area(ac) (cfs) (%) (fps) (fps) Depth(ft)
1 0.82 0.33 0.49 0.48 2.82 1.82 5 1.75 0.57
2 2.09 0.76 1.33 0.46 6.76 1.02 5 1.75 0.88
3 0.85 0.44 0.41 0.56 3.38 1.32 5 1.62 0.65
4 3.10 0.95 2.16 0.41 9.12 0.62 5 1.57 1.08
5 0.79 0.54 0.25 0.59 3.82 4.60 5 2.68 0.54
6 0.96 0.39 0.57 0.49 3.32 1.01 5 1.46 0.67
7 0.91 0.22 0.69 0.37 2.38 3.26 5 2.09 0.48
8 1.45 0.84 0.61 0.61 6.26 2.52 5 2.41 0.72
9 2.28 0.88 1.40 0.47 7.60 2.78 5 2.63 0.76
10 0.45 0.12 0.33 0.39 1.24 1.77 5 1.41 0.42
11 1.96 0.58 1.38 0.41 5.66 1.34 5 1.86 0.78
12 1.41 0.43 0.98 0.41 4.13 2.69 5 2.23 0.61
13 2.18 0.81 1.37 0.46 7.12 0.50 5 1.36 1.02
14 0.45 0.19 0.26 0.50 1.56 0.50 5 0.93 0.58
15 0.43 0.20 0.23 0.53 1.62 0.50 5 0.94 0.59
1
�16 0.63 1 0.27 0.36 0.66 2.21 0.50 5 1.01 0.66
17 0.69 0.35 0.34 0.55 2.70 0.50 5 1.07 0.71
18 1.00 0.67 0.33 0.67 4.75 0.48 5 1.21 0.89
19 1.39 0.71 0.67 0.56 5.52 0.46 5 1.24 0.95
20 1.31 0.47 0.85 0.45 4.19 0.94 5 1 p; A: ,1 A 1 75;
FEB
Form SW401-Low Density-Rev.4-20090ct20 Page 2 of 4 1 7 2010
!BY:�

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IV. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section 15A
NCAC 2H .1000, NCDENR BMP Manual (2007), Session Law 2006-246, and Session Law 2008-211.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An
incomplete submittal package will result in a request for additional information. This will delay final
review and approval of the project. Initial in the space provided to indicate that the following requirements
have been met and supporting documentation is provided as necessary. If the applicant has designated an agent
on the Stormwater Management Permit Application Form, the agent may initial below. If any item is not met,
then justification must be attached. Only complete items m through o for projects with curb outlets.
Page/Plan
Initials Sheet No.
Cl X.i/Ik a.t For projects in the 20 coastal counties: Per NCAC 2H.1005, a 50 foot wide vegetative buffer
is provided adjacent to surface waters. For Redevelopment projects, a 30' wide vegetative
buffer adjacent surface waters is provided.
A/14- b.t For HQW or ORW projects outside the 20 coastal counties: A 30 foot wide vegetative buffer
is provided adjacent to surface waters.
Obit c.t For Phase II Post-Construction projects: All built upon area is located at least 30 feet
landward of all perennial and intermittent surface waters.
7l1( Veal'd. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to the sale of any lots.
I'lZ. e. Built upon area calculations are provided for the overall project and all lots.
0r, 'M1i f. Project conforms to low density requirements within the ORW AEC. (if applicable per
15A NCAC 2H .1007)
(1 OP Q-Z1 g. Side slopes of swales are no steeper than 3:1; or no steeper than 5:1 for curb outlet swales.
I i 2- h. Longitudinal slope of swales is no greater than 5%;for non-curb outlet projects, calculations
for shear stress and velocity are provided if slope is greater than 5%.
i. At a minimum, swales are designed to carry the 10 year storm velocity at a non-erosive rate.
C7( 1'1 Z j. Swales discharging to wetlands are designed to flow into and through the wetlands at a non-
erosive velocity(for this flow requirement into wetlands, non-erosive is velocity<2 ft/s).
C ZI k. Swale detail and permanent vegetation is specified on the plans.
(7'Ck 0/6 1. Swales are located in recorded drainage easements.
grit FLAPS m.tt Length of swale or vegetated area is at least 100 feet for each curb outlet.
n.tt The system takes into account the run-off at ultimate built-out potential from all surfaces
draining to the system (delineate drainage area for each swale).
Opp _ ?c_A�S o.tt Curb outlets direct flow to a swale or vegetated area.
Projects in the Neuse,Tar-Pamlico,Catawba River basins,and Randleman Lake may require additional buffers.
tt Only complete these items for projects with curb outlets.
7R CEIVED
Form SW401-Low Density-Rev.4-20090ct20 Page 3 of 4 JAN 1 9 2010
.R7-

V. SWALE SYSTEM MAINTENANCE REQUIREMENTS
1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches
at any time; and grass will not be mowed too close to the ground or"scalped".
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections. Side slopes must be maintained at the permitted slope.
5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales will not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title:Lr• G=v13 111Cso San OWia9.
Address: co ( lwx;Nika-, NI( _ kl I dS
Phone: Ct I6 �4 Date: (—i'-/ - i
Signature: .-
Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a
resident of the subdivision has been named the president.
I, PAvi--A 1'". U i2Pr!•� N
,a Notary Public for the State of N iL774 LAgkti nd Countyof
, do hereby certify that De_ be CA ro/ fliSuAl personally appeared before me this "f.=m
day of jl[n uc -Li , .L l V ,and acknowledge the due execution of the forgoing swale maintenance requirements.
Witness my hand and official seal,
Notary signature
offitommoilitime
SEAC My commission expires Fj f l 113
as
. . ,-. . . .
RECEIVED
Form SW401-Low Density-Rev.4-2009Oct20 Page 4 of 4 JAN 1 9 2010
.

Low Density Residential Subdivisions with Curb Outlet Swales
Deed Restrictions & Protective Covenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations,
deed restrictions and protective covenants are required for Low Density Residential Subdivisions with curb
outlet swales, where lots will be subdivided and sold. Deed restrictions and protective covenants are
necessary to ensure that the development maintains a "built-upon" area consistent with the applicable
regulation governing the density level.
I, be, CAMP- VALLI4*ISG/0 acknowledge and affirm by my signature below, that I will cause the
following deed restrictions and protective covenants to be recorded for 'Ile le PE4(_ prior
to the sale of any lot:
1. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Numberck4 e3/059MOD as issued by the Division of Water Quality under the
Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming under
them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express written
consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence
of the Division of Water Quality.
6. The maximum allowable built-upon area per lot is SEE TABLE 1 square feet. This allotted amount
includes any built-upon area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not
limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does not include
raised, open wood decking, or the water surface of swimming pools.
7. In the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management
calculates a different maximum allowable built-upon area for that lot than is shown herein, the
governing maximum built-upon area for that lot shall be the most restrictive of the two.
8. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved
plan must be maintained at a minimum of 100'long with 5:1 (H:V) side slopes or flatter, have a
longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a non-erosive manner,
and maintain a dense vegetated cover.
9. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the
development except for average driveway crossings, is strictly prohibited by any persons.
10. Each lot will maintain a 30*foot wide vegetated buffer between all impervious areas and surface
waters.
11. All roof drains shall terminate at least 30*foot from the mean high water mark of surface waters.
12. Filling in, piping or altering any designated 5:1 curb outlet swale associated with the development is
prohibited by any persons.
*50 foot for projects located in the 20 coastal counties.
RECEIVED
JAN 1 9 2010
Form DRPC-6 Rev2 05Nov2009 Page 1 of 2 BY:

Low Density Residential Subdivisions with Curb Outlet Swales
Deed Restrictions & Protective Covenances
r
Signature: 1 _ Date:_- JV_ ) `j--DO 1
..(1 ;7
l�
I, KA a 4-A !-)-. i T E N , a Notary Public in the
State of A/Ok.7 d ',�l otm i•A , County of A E 6I' .}A'�V E ,
do hereby certify that P/2. PeCai-6/ ik)a 1l i s•i 56 AI personally appeared
before me this the /t4h day of :.1 et)I ti a;.ram, , 20 /C , and acknowledge
the due execution of the foregoing instrument. Witness my hand and offi, itt,'�AW ,'r.,
°c
:Y '4.'SEAL
' ittA-V--6-- JI-r: 6.11,11_,P---/t-,Signature : .. ' - L:
'c�
,
My Commission expires /!I / :••,.°
RECEA V E
Form DRPC-6 Rev2 O5Norv2009 Page 2 of 2 ,� �[ 2010
BY:

THE PEARL LOT ALLOCATION TABLE #1 FOR LOW DENSITY DEED RESTRICTIONS
ALLOCATED IMPERVIOUS LOT NUMBERS TOTAL#OF TOTAL IMPERVIOUS
AREA PER LOT (sfl LOTS AREA ALLOCATED (st)
6,200 1 -49;79-97; 106- 108; 167- 184;337-355 108 669,600
5,900 50 -54; 109- 130; 185-212 55 324,500
4,700 55-78; 131 - 145;213 -234;285-336 113 531,100
3,750 146- 166 21 78,750
3,275 98- 105;235-284 58 189,950
TOTAL 355 1,793,900
RTE'C EIVED
JAN 1 9 2010
BY:

The Pearl
Revised Hydraulic and Hydrologic Calculations
February 2010
\\Illllill,,
SEAL
1. 35054
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f1--
�,y1),187 IAN R5``\\
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Prepared by:
T�
111
East Coast
Engineering & Surveying, PC
Engineers, Planners & Surveyors
Red Apple Professional Park
712 Village Road NW, Suite 105 Post Office Box 2469
Shallotte,North Carolina 28459
Office: 910-754-8029
Firm License Number: C-3014
S(L)803(0S°( kOJ
2CEIVED
FEB 1 7 2010
BY:

e
The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS
JCR
Q FROM DA-1 Drainage Area= 35,704 SF Q FROM DA-2 Drainage Area= 91,121 SF
Drainage Area= 0.82 Acres Drainage Area= 2.09 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(I) Surface Acres C-Value(')
GRASSY 0.49 0.2 GRASSY 1.33 0.2
IMPERVIOUS 0.33 0.9 IMPERVIOUS 0.76 0.9
Total A' 0.819651056 Total A' 2.09
Weighted'C' 0.484 I Weighted'C' 0.455 1
Intensity's' I 7.1 Intensity'i' 1 7.1
Qi=CiA 2.82 cfs C,=CiA 6.76 cfs
Q FROM DA-3 Drainage Area= ' 36,832 SF Q FROM DA-4 Drainage Area= 135,205 SF
Drainage Area= 0.85 Acres Drainage Area= 3.10 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(') Surface Acres C-Value(1)
GRASSY 0.41 0.2 GRASSY 2.16 0.2
IMPERVIOUS 0.44 0.9 IMPERVIOUS 0.95 0.9
Total'A' 0.845546373 Total'A' 3.10387971
Weighted'C' 0.562 I Weighted'C' 0.414
Intensity'I' I 7.1 Intensity'i' I 7.1
C,=CiA 3.38 cfs C,=CiA 9.12 cfs
Q FROM DA-5 Drainage Area= 34,352 SF Q FROM DA-6 Drainage Area= 41,881 SF
Drainage Area= 0.79 Acres Drainage Area= 0.98 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'1 Surface Acres C-Value
GRASSY 0.25 0.2 GRASSY 0.57 0.2
IMPERVIOUS 0.54 0.9 IMPERVIOUS 0.39 0.9
Total'A' 0.788613407 Total'A' 0.96145546
Weighted'C' 0.682 I Weighted'C' 0.486 I
Intensity's' I 7.1 Intensity'i' r 7.1
Qi=CiA 3.82 cfs Q 3.32 cfs
Q FROM DA-7 Drainage Area= 39,667 SF Q FROM DA-8 Drainage Area= 63,296
Drainage Area= 0.91 Acres Drainage Area= 1.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value W Surface Acres C-Value
GRASSY 0.69 0.2 GRASSY 0.61 0.2
IMPERVIOUS 0.22 0.9 IMPERVIOUS 0.84 0.9
Total'A' 0.910629017 Total'A' 1.45308333
Weighted'C' 0.368 I Weighted'C' 0.607 I
Intensity's' 7.1 Intensity'i' 7.1
C,=CiA 2.38 cfs Q ' 6.26 cfs
Q FROM DA-9 Drainage Area 99,192 Q FROM DA-10 Drainage Area= 19,500
Drainage Area= 2.28 Acres Drainage Area= 0.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-ValueW'W Surface Acres C-ValueW'r
GRASSY 1.40 0.2 GRASSY 0.33 0.2
IMPERVIOUS 0.88 0.9 IMPERVIOUS 0.12 0.9
Total'A' 2.277134986 Total'A' 0.4476584
Weighted'C' 0.470 I Weighted'C' 0.390 I
Intensity's' I 7.1 Intensity'i' 7.1
Qi=CiA 7.60 cfs Qi=CiA }
1.24 cfs
Q FROM DA-11 Drainage Area= 85,298 Q FROM DA-12 Drainage Area= 61,482
Drainage Area= 1.96 Acres Drainage Area= 1.41 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value W
GRASSY 1.38 0.2 GRASSY 0.98 0.2
IMPERVIOUS 0.58 0.9 IMPERVIOUS 0.43 0.9
Total'A' 1.958126722 Total'A' 1.41143251
Weighted'C' 0.407 I Weighted'C' 0.413 I
Intensity's' I 7.1
Intensity's' 7.1
Q,=CIA 5.66 cfs C,=CiA 4.13 cfs
FEB 1 7 2010
1 OF Revision Date:2/1 612 01 0

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-13 Drainage Area= 94,849 Q FROM DA-14 Drainage Area= 19,556
Drainage Area= 2.18 Acres Drainage Area= 0.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'I Surface Acres C-Value(I)
GRASSY 1.37 0.2 GRASSY 0.26 0.2
IMPERVIOUS 0.81 0.9 IMPERVIOUS 0.19 0.9
Total'A' 2.177433425 Total'A' 0.44894399
Weighted'C' 0.461 I Weighted'C' 0.489 I
Intensity'i' I 7.1 Intensity'i' 7.1
Q;=CiA 7.12 cfs Q;=CiA ' 1.56 cfs
Q FROM DA-15 Drainage Area= 18,782 Q FROM DA-16 Drainage Area= 27,462
Drainage Area= 0.43 Acres Drainage Area= 0.63 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'I Surface Acres C-Value r'I
GRASSY 0.23 0.2 GRASSY 0.36 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.27 0.9
Total'A' 0.43117539 Total'A' 0.63044077
Weighted'C' 0.530 I Weighted'C' 0.495 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Q;=CiA 1.62 cfs Q;=CiA I
2.21 cfs
Q FROM DA-17 Drainage Area= 29,952 Q FROM DA-18 Drainage Area= 43,641
Drainage Area= 0.69 Acres Drainage Area= 1.00 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value m
GRASSY 0.34 0.2 GRASSY 0.33 0.2
IMPERVIOUS 0.35 0.9 IMPERVIOUS 0.67 0.9
Total'A' 0.687603306 Total'A' 1.00
Weighted'C' 0.553 I Weighted'C' 0.668 I
Intensity'i' 7.1 Intensity'i' 7.1
Q;=CiA 2.70 cfs Q,=CIA 4.75 cfs
Q FROM DA-19 Drainage Area= 60,406 Q FROM DA-20 Drainage Area= 57,279
Drainage Area= 1.39 Acres Drainage Area= 1.31 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value i0I Surface Acres C-Value r'I
GRASSY 0.67 0.2 GRASSY 0.85 0.2
IMPERVIOUS 0.71 0.9 IMPERVIOUS 0.47 0.9
Total'A' 1.386730946 Total'A' 1.3149449
Weighted'C' 0.561 I Weighted'C' 0.449 I
Intensity'i' 1 7.1 Intensity'i' I 7.1
Q;=CiA 5.62 cfs Q;=CIA 4.19 cfs
Q FROM DA-21 Drainage Area= 93,207 Q FROM DA-22 Drainage Area= 83,295
Drainage Area= 2.14 Acres Drainage Area= 1.91 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'I Surface Acres C-Value nI
GRASSY 1.42 0.2 GRASSY 1.17 0.2
IMPERVIOUS 0.72 0.9 IMPERVIOUS 0.74 0.9
Total A' 2.139738292 Total A' 1.91219008
Weighted'C' 0.436585 I Weighted'C' 0.470966 I
Intensity's' I 7.1 Intensity's' I 7.1
Q;=CiA I 6.63 cfs Q;=CiA If 6.39 cfs
Q FROM DA-23 Drainage Area= 65,630 Q FROM DA-24 Drainage Area= 83,344
Drainage Area= 1.51 Acres Drainage Area= 1.91 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value rtI
GRASSY 0.85 0.2 GRASSY 1.06 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.86 0.95
Total A' 11.506657484 Total'A' 1.91331497
Weighted'C' 0.502974 I Weighted'C' 0.536206 I
Intensity's' 1 7.1 Intensity's' 7.1
Q,=CiA 5.38 cfs Q,=CiA , 7.28 cfs
FEB 172010
ZOF Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-26 Drainage Area= 149,850 Q FROM DA-26 Drainage Area= 166,791 '
Drainage Area= 3.44 Acres Drainage Area= 3.83 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value nl Surface Acres C-Value nW
GRASSY 2.11 0.2 GRASSY 2.27 0.2
IMPERVIOUS 1.33 0.9 IMPERVIOUS 1.56 0.9 _
Total'A' 3.440082645 Total'A' 3.82899449
Weighted'C' 0.470143 I Weighted'C' 0.485328 I
Intensity's' 1 7.1 Intensity'i' 7.1
Q,=CiA 11.48 cfs Q,=CiA I
13.19 cfs
Q FROM DA-27 Drainage Area= 50,592 Q FROM DA-28 Drainage Area= 21,033
Drainage Area= 1.16 Acres Drainage Area= 0.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-ValueWWJ Surface Acres C-Value")
GRASSY 0.71 0.2 GRASSY 0.26 0.2
IMPERVIOUS 0.45 0.9 IMPERVIOUS 0.22 0.9
Total'A' 1.161432507 Total'A' 0.48285124
Weighted'C' 0.472573 I Weighted'C' 0.520862 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Q,=CiA 3.90 ds Qi=CiA ' 1.79 cis
Q FROM DA-29 Drainage Area= 126,527 Q FROM DA-30 Drainage Area= 21,993
Drainage Area= 2.90 Acres Drainage Area= 0.50 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value/'/ Surface Acres C-Value(1)
GRASSY 1.82 0.2 GRASSY 0.07 0.2
IMPERVIOUS 1.08 0.9 IMPERVIOUS 0.43 0.9
Total'A' 2.904660239 Total'A' 0.50488981
Weighted'C' 0.460699 I Weighted'C' 0.802096 I
Intensity'i' f 7.1 Intensity'i' I 7.1
Q,=CIA 9.60 cfs Qi=CiA I1 2.88 cfs
Q FROM DA-31 Drainage Area= 90,336 Q FROM DA-32 Drainage Area= 75,659
Drainage Area= 2.07 Acres Drainage Area= 1.74 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value1 Surface Acres C-Value(1)
GRASSY 0.24 0.2 GRASSY 0.67 0.2
IMPERVIOUS 1.83 0.9 IMPERVIOUS 1.07 0.9
Total'A' 2.073829201 Total A' 1.73689164
Weighted'C' 0.818901 I Weighted'C' 0.630331 I
Intensity'i' I 7.1 Intensity'i' 7.1
Q,=CiA 12.06 ds Qi=CiA f 7.77 cfs
Q FROM DA-33 Drainage Area= 24,053 Q FROM DA-34 Drainage Area= 76,727
Drainage Area= 0.55 Acres Drainage Area=[ 1.76 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.32 0.2 GRASSY 0.97 0.2 _
IMPERVIOUS 0.24 0.9 IMPERVIOUS 0.79 0.9
Total'A' 0.5521809 Total'A' 1.76140955
Weighted'C' 0.498998 I Weighted'C' 0.514834 I
Intensity's' I 7.1 Intensity'i' 7.1
Qi=CIA 1.96 cfs Qi=CiA , 6.44 cfs
Q FROM DA-35 Drainage Area= 66,342 Q FROM DA-36 Drainage Area= 82,329
Drainage Area= 1.52 Acres Drainage Area= 1.89 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.01 0.2 GRASSY 1.44 0.2
IMPERVIOUS 0.51 0.9 IMPERVIOUS 0.45 0.9
Total'A' 1.523002755 Total'A' 1.89001377
Weighted'C' 0.435401 I Weighted'C' 0.36715 I
Intensity's' I 7.1 Intensity's' 7.1
Qi=CiA 4.71 ds Qi=CiA ' 4.93 cis
FEB 1 7 2010
gY:
-L OF Revision Date:2/16/2010

The`Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-37 Drainage Area= 38,587 Q FROM DA-38 Drainage Area= 147,381
Drainage Area= 0.89 Acres Drainage Area= 3.38 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.41 0.2 GRASSY 2.15 0.2
IMPERVIOUS 0.48 0.9 IMPERVIOUS 1.23 0.9
Total'A' 0.885835629 Total'A' 3.3834022
Weighted'C' 0.576077 I Weighted'C' 0.454669 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CIA 3.62 cfs Qi=CiA I 10.92 cfs
Q FROM DA-39 Drainage Area= 18,805 Q FROM DA-40 Drainage Area= 31,000
Drainage Area= 0.43 Acres Drainage Area= 0.71 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.14 0.2 GRASSY I 0.46 0.2
IMPERVIOUS 0.29 0.9 IMPERVIOUS 0.25 0.9
Total'A' 0.431710744 Total'A' 0.71 1 66 2 0 88
Weighted'C' 0.670222 I Weighted'C' 0.443035 I
Intensity'I' I 7.1 Intensity'i' 7.1
Qi=CIA 2.05 cfs Qi=CIA I 2.24 cfs
Q FROM DA-41 Drainage Area= 66,065 Q FROM DA-42 Drainage Area= 34,702
Drainage Area= 1.52 Acres Drainage Area= 0.80 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.02 0.2 GRASSY 0.55 0.2
IMPERVIOUS 0.50 0.9 IMPERVIOUS 0.24 0.9
Total A' 1.51664371 Total A' 1 0.7966483
Weighted'C' 0.428473 I Weighted'C' 0.41493 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Qi=CiA 4.61 cfs Qi=CiA I 2.35 cfs
Q FROM DA-43 Drainage Area= 92,744 Q FROM DA-44 Drainage Area= 95,432
Drainage Area= 2.13 Acres Drainage Area= 2.19 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.52 0.2 GRASSY 1.61 0.2
IMPERVIOUS 0.61 0.9 IMPERVIOUS 0.58 0.9
Total'A' 2.129109275 Total'A' 2.19081726
Weighted'C' 0.399764 I Weighted'C' 0.385482 I
Intensity'i' 1 7.1 Intensity'i' I 7.1
Qi=CiA 6.04 cfs Qi=CIA 6.00 cfs
Q FROM DA-45 Drainage Area= 47,166 Q FROM DA-46 Drainage Area= 88,760
Drainage Area= 1.08 Acres Drainage Area= 2.04 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.65 0.2 j GRASSY 0.83 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 1.20 D.9
Total A' 1.082782369 Total'A' 2.03764922
Weighted'C' 0.477991 I Weighted'C' 0.613872
Intensity'i' I 7.1 Intensity'I' 7.1
Qi=CiA f 3.67 cfs Qi=CiA I 8.88 cfs
Q FROM DA-47 Drainage Area= 41,557 Q FROM DA-48 Drainage Area= 120,902
Drainage Area= 0.95 Acres Drainage Area= 2.78 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.36 0.2 GRASSY 1.85 0.2
IMPERVIOUS 0.60 0.9 IMPERVIOUS 0.93 0.9
Total'A' 0.954017447 Total'A' 2.77552801
Weighted'C' 0.636858 I Weighted'C' 0.433706 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CIA 4.31 cfs Qi=CIA I 8.56 cfs
"EC EAT*F.,11)
FEB 17 2010
BY-
OF 4 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-49 Drainage Area= 53,699 Q FROM DA-50 Drainage Area= 329,285
Drainage Area= 1.23 Acres Drainage Area= 7.56 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.67 0.2 GRASSY 3.78 0.2
IMPERVIOUS 0.56 0.9 IMPERVIOUS 3.78 0.9
Total'A' 1.232759412 Total'A' 7.55934343
Weighted'C' 0.517457 I Weighted'C' 0.550239 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA 4.53 cfs Qi=CiA f 29.53 cfs
Q FROM DA-51 Drainage Area= 106,192 Q FROM DA-52 Drainage Area= 18,527
Drainage Area= 2.44 Acres Drainage Area= 0.43 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.00 0.2 GRASSY 0.06 0.2
IMPERVIOUS 1.44 0.9 IMPERVIOUS 0.37 0.9
Total'A' 2.437832874 Total'A' 0.4253214
Weighted'C' 0.613374 I Weighted'C' 0.807357 I
Intensity'i' I 7.1 Intensity 7.1
Qi=CiA 10.82 cfs Qi=CiA , 2.44 cfs
Q FROM DA-53 Drainage Area= 63,833 Q FROM DA-54 Drainage Area= 112,577
Drainage Area= 1.47 Acres Drainage Area= 2.58 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.81 0.2 GRASSY 1.61 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.97 0.9
Total A' 1.46540404 Total'A' 2.5844123
Weighted'C' 0.512161 I Weighted'C' 0.463611 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CiA 5.33 cfs Qi=CiA ' 8.51 cfs
Q FROM DA-55 Drainage Area= 24,810 Q FROM DA-56 Drainage Area= 64,365
Drainage Area= 0.57 Acres Drainage Area= 1.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.06 0.2 GRASSY 0.46 0.2
IMPERVIOUS 0.51 0.9 IMPERVIOUS 1.01 0.9
Total'A' 0.569559229 Total'A' 1.47761708
Weighted'C' 0.832003 I Weighted'C' 0.680533 I
Intensity'i' I 7.1 Intensity'i' 1 7.1
Qi=CIA 3.36 cfs Qi=CIA 7.14 cfs
Q FROM DA-57 Drainage Area= I 70,045 Q FROM DA-58 Drainage Area= 27,114
Drainage Area= L 1.61 Acres Drainage Area= 0.62 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.14 0.2 GRASSY 0.05 0.2
IMPERVIOUS 1.47 0.9 IMPERVIOUS 0.57 0.9
Total A' 1.608011938 Total A' 0.62245179
Weighted'C' 0.839269 I Weighted'C' 0.844984 I
Intensity'i' 7.1 Intensity'i' I 7.1
Qi=CiA 9.58 cfs Qi=CiA l 3.73 cfs
Q FROM DA-69 Drainage Area= 173,603 Q FROM DA-60 Drainage Area= 76,762
Drainage Area= 3.99 Acres Drainage Area= 1.76 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.75 0.2 GRASSY 0.78 0.2
IMPERVIOUS 2.24 0.9 IMPERVIOUS 0.99 0.9
Total'A' 3.985376492 Total'A' 1.76221304
Weighted'C' 0.593122 I Weighted'C' 0.59192 I
Intensity'i' 1 7.1 Intensity'i' I 7.1
Qi=CiA 16.78 cfs Qi=CiA 7.41 cfs
'�,T<r"�E Jl V ED
' PEN 1 7 2010
1
i
SOF 14 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-61 Drainage Area 156,342 a FROM DA-62 Drainage Area= 29,640
Drainage Area= 3.59 Acres Drainage Area= 0.68 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 2.02 0.2 GRASSY 0.25 0.2
IMPERVIOUS I 1.57 0.9 IMPERVIOUS 0.43 0.9
Total'A' 1 3.589118457 Total A' 0.68044077
Weighted'C' 0.506964 I Weighted'C' 0.640027 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CiA l 12.92 cfs Qi=CiA 3.09 cfs
Q FROM DA-63 Drainage Area= 36,936 Q FROM DA-64 Drainage Area= 39,375
Drainage Area= 0.85 Acres Drainage Area= 0.90 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.19 0.2 GRASSY 0.11 0.2
IMPERVIOUS 0.65 0.9 IMPERVIOUS 0.80 0.9
Total'A' 0.847933884 Total'A' 0.90392562
Weighted'C' 0.739744 I Weighted'C' 0.8184
Intensity'i' ! 7.1 Intensity'i' 1 7.1
Qi=CiA 4.45 cfs Qi=CiA 6.26 cfs
Q FROM DA-65 Drainage Area= 42,139 Q FROM DA-66 Drainage Area= 74,054
Drainage Area= 0.97 Acres Drainage Area= 1.70 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.42 0.2 GRASSY 0.93 0.2
IMPERVIOUS 0.55 0.9 IMPERVIOUS 0.77 0.9
Total'A' 0.967378329 Total'A' 1.70004591
Weighted'C' 0.596255 I Weighted'C' 0.517058
Intensity'i' I 7.1 Intensity
Qi=CiA 4.10 cfs Qi=CiA 6.24 cfs
Q FROM DA-67 Drainage Area 66,446 Q FROM DA-68 Drainage Area= 50,241
Drainage Area- 1.53 Acres Drainage Area= 1.15 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.58 0.2 GRASSY 0.57 0.2
IMPERVIOUS 0.95 0.9 IMPERVIOUS 0.58 0.9
Total'A' 1.525390266 Total'A' 1.15337466
Weighted'C' 0.634774 I Weighted'C' 0.55487 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Qi=CIA 6.87 cfs Qi=CiA 4.54 cfs
Q FROM DA-69 Drainage Area= 127,863 Q FROM DA-70 Drainage Area= 42,830
Drainage Area= 2.94 Acres Drainage Area= 0.98 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 1.56 0.2 GRASSY 0.42 0.2
IMPERVIOUS 1.37 0.9 IMPERVIOUS 0.56 0.9
Total'A' 2.935330579. Total'A' 0.98324151
Weighted'C' 0.527885 I Weighted'C' 0.599668 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CiA 11.00 cfs Qi=CiA I 4.19 cfs
Q FROM DA-71 Drainage Area= 42,099 Q FROM DA-72 Drainage Area= 24,733
Drainage Area= 0.97 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.35 0.2 GRASSY 0.03 0.2
IMPERVIOUS 0.61 0.9 IMPERVIOUS 0.54 0.9
Total'A' 0.966460055 Total'A' 0.56779155
Weighted'C' 0.643837 I Weighted'C' 0.864707 I
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CIA 4.42 cfs Qi=CiA } 3.49 cfs
R. cs V iD
FEB 1 7 2010
///� /►' BY' ----
62 OF r t Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-73 Drainage Area= 48,556 Q FROM DA-74 Drainage Area= 13,741
Drainage Area= 1.11 Acres Drainage Area= 0.32 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.45 0.2 GRASSY 0.08 0.2
IMPERVIOUS 0.66 0.9 IMPERVIOUS 0.24 0.9
Total'A' , 1.114692378 Total A' 0.31544995
Weighted'C' 0.614528 I Weighted'C' 0.725879 I
Intensity'i' 7.1 Intensity'i' I 7.1
Qi=CIA 4.86 cfs Qi=CiA 1.63 cfs
Q FROM DA-75 Drainage Area= 11,122 Q FROM DA-76 Drainage Area= 15,730
Drainage Area= 0.26 Acres Drainage Area= 0.36 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.05 0.2 GRASSY 0.04 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.33 0.9
Total'A' 0.255325987 Total'A' 0.36111111
Weighted'C' a ' 0.755934 I Weighted'C' 0.831113
Intensity'i' 7.1 Intensity'i' 7.1
Qi=CiA 1.37 cfs Qi=CiA , 2.13 cfs
Q FROM DA-77 Drainage Area= 65,141 Q FROM DA-78 Drainage Area= 27,694
Drainage Area= 1.50 Acres Drainage Area= 0.64 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.69 0.2 GRASSY 0.29 0.2
IMPERVIOUS 0.80 0.9 IMPERVIOUS 0.35 0.9
Total A' 1.495431589 Total'A' 0.63576676
Weighted'C' 0.575334 I Weighted'C' 0.585311 I
Intensity's' I 7.1 Intensity'i' 7.1
Qi=CiA 6.11 cfs Qi=CiA ' 2.84 cfs
Q FROM DA-79 Drainage Area= 43,202 Q FROM DA-80 Drainage Area= 21,754
Drainage Area= 0.99 Acres Drainage Area= 0.50 Acres
Design Storm= 10 -YR storm Design Storm= 10 1-YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.44 0.2 GRASSY 0.05 0.2
IMPERVIOUS 0.55 0.9 IMPERVIOUS 0.45 0.9
Total'A' 0.991781451 Total'A' 0.49940312
Weighted'C' 0.587899 I Weighted'C' 0.826795 I
Intensity'i' 7.1 _ Intensity'I' 7.1
Qi=CiA 4.14 cfs Qi=CiA ' 2.93 cfs
Q FROM DA-81 Drainage Area= 30,446 Q FROM DA-82 Drainage Area= 95,436
Drainage Area= 0.70 Acres Drainage Area= 2.19 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value(1)
GRASSY 0.27 0.2 GRASSY 1.05 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 1.14 0.9
Total'A' 0.698943985 Total'A' 2.19090909
Weighted'C' 0.627412 I Weighted'C' 0,563635 I
Intensity's' ! 7.1 Intensity'i' I 7.1
Qi=CIA 3.11 cfs Qi=CiA ` 8.77 cfs
Q FROM DA-83 Drainage Area= 139,878 SF
Drainage Area= 3.21 Acres
Design Storm= 10 -YR storm
Surface Acres C-Valuer"
GRASSY 1.79 0.2
IMPERVIOUS 1.42 0.9
Total'A' 3.21
Weighted'C' 0.510 I
Intensity'i' I 7.1
Qi=CiA 11.63 cfs
.\-E'C'ElIVED
LDEB 1 7 2010
BY:
OF 1 4 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS JCR
Q FROM DA-84 Drainage Area= 13,407 SF Q FROM DA-85 Drainage Area= 20,864 SF
Drainage Area= 0.31 Acres Drainage Area= 0.48 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer'! Surface Acres C-Valuer'!
GRASSY 0.10 0.2 GRASSY 0.24 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 0.24 0.9
Total'A' 0.307782369' Total'A' 0.47897153
Weighted'C' 0.666 I Weighted'C' 0.549 I
Intensity'i' 1 7.1 Intensity'i' 7.1
QI=CiA 1.46 cfs Q,=CiA , 1.87 cfs
Q FROM DA-86 Drainage Area= 93,326 SF Q FROM DA-87 Drainage Area= 22,182 SF
Drainage Area= 2.14 Acres Drainage Area= 0.51 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value n1 Surface Acres C-Value
GRASSY 1.03 0.2 GRASSY 0.00 0.2
IMPERVIOUS 1.11 0.9 IMPERVIOUS 0.51 0.9
Total'A' 2.142470156 Total A' 0.50922865
Weighted'C' 0.564 I Weighted'C' 0.900 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CiA 8.57 cfs Q;=CiA , 3.25 cfs
Q FROM DA-88 Drainage Area= 53,836 Q FROM DA-89 Drainage Area= 27,071
Drainage Area= 1.24 Acres Drainage Area= 0.62 Acres
Design Storm= 10 ' -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer'! Surface Acres C-Valuer'!
GRASSY 0.76 0.2 GRASSY 0.29 0.2
IMPERVIOUS 0.48 0.9 IMPERVIOUS 0.33 0.9
Total'A' 1.2359045 Total'A' 0.62146465
Weighted'C' 0.470 I Weighted'C' 0.577 I
Intensity'i' 1 7.1 Intensity'I' I 7.1
Qi=CiA 4.12 cfs QI=CiA Il 2.56 cfs
Q FROM DA-90 Drainage Area= 18,492 Q FROM DA-91 Drainage Area=I 26,321
Drainage Area= 0.42 Acres Drainage Area= 0.60 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r1 Surface Acres C-Value ri1
GRASSY 0.00 0.2 GRASSY 0.42 0.2
IMPERVIOUS 0.42 0.9 IMPERVIOUS 0.19 0.9
Total'A' 0.424517906 Total A' 0.60424702
Weighted'C' 0.900 I Weighted'C' 0.416 I
Intensity'i' I 7.1 Intensity'i' 7.1
Qi=CIA 2.71 cfs Qi=CiA , 1.78 cfs
Q FROM DA-92 Drainage Area= 79,522 Q FROM DA-93 Drainage Area= 55,964
Drainage Area= 1.83 Acres Drainage Area= 1.28 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'1 Surface Acres C-Value r'1
GRASSY 1.03 0.2 GRASSY 0.67 0.2
IMPERVIOUS 0.79 0.9 IMPERVIOUS 0.61 0.9
Total'A' 1.825573921 Total'A' 1.28475666
Weighted'C' 0.503 I Weighted'C' 0.534 I
Intensity'i' 1 7.1 Intensity'i' 7.1
QI=C/A 6.52 cfs QI=CiA } 4.87 cfs
Q FROM DA-94 Drainage Area= 68,323 Q FROM DA-95 Drainage Area= 55,916
Drainage Area= 1.57 Acres Drainage Area= 1.28 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r11 Surface Acres C-Value(1)
GRASSY 0.91 • 0.2 GRASSY 0.77 0.2
IMPERVIOUS 0.66 0.9 IMPERVIOUS 0.51 0.9
Total'A' 1.568480257 Total'A' 1.28365473
Weighted'C' 0.493 I Weighted'C' 0.480 I
Intensity'i' I 7.1 Intensity'i' 7.1
Q, CiA II 5.49 cfs Qi=CiA I 4.37 cfs
RECEIVED
FEB 1 7 2010
BY:
g_OF L4 Revision Date:2/16/2010

The Pearl
STORM DRAINAGE FLOW CALCULATIONS East Coast Engineering and Surveying,P.C.
JCR
Q FROM DA-96 Drainage Area= 76,708 Q FROM DA-97 Drainage Area= 96,653
Drainage Area= 1.76 Acres Drainage Area= 2.22 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-ValueW Surface Acres C-Valuel/1
GRASSY 1.37 0.2 GRASSY 1.46 0.2
IMPERVIOUS 0.39 0.9 IMPERVIOUS 0.76 0.9
Total A' 1.76097337 Total A' 2.21884757
Weighted'C' 0.355 I Weighted'C' 0.438 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Q,=CiA 4.43 cfs Q;=CiA , 6.91 cfs
Q FROM DA-98 Drainage Area= 103,276 _ Q FROM DA-99 Drainage Area= 25,001
Drainage Area= 2.37 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value 171 Surface Acres C-Value
GRASSY 1.64 0.2 GRASSY 0.04 0.2
IMPERVIOUS 0.73 0.9 IMPERVIOUS 0.53 0.9
Total A' 2.370890725 Total'A' 0.57394399
Weighted'C' 0.415 I Weighted'C' 0.850 I
Intensity's' 1 7.1 Intensity's' 7.1
Q;=CiA 6.99 cfs Q;=CiA I
3A7 cfs
Q FROM DA-100 Drainage Area= 22,230 Q FROM DA-101 Drainage Area= 63,270
Drainage Area= 0.51 Acres Drainage Area= 1.45 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value 1'1 Surface Acres C-Value
GRASSY 0.27 0.2 GRASSY 0.62 0.2
IMPERVIOUS 0.24 0.9 IMPERVIOUS 0.83 0.9
Total'A' 0.510330579 Total A' 1.45247934
Weighted'C' 0.53309 I Weighted'C' 0.6019441
Intensity'i' I 7.1 Intensity'i' 7.1
Q;=CIA 1.93 cfs Q,=C/A , 6.21 cfs
Q FROM DA-102 Drainage Area= 37,286 Q FROM DA-103 Drainage Area= _ 6,865
Drainage Area= 0.86 Acres Drainage Area= 0.16 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value 1'l Surface Acres C-Value 1+7
GRASSY 0.44 0.2 GRASSY 0.00 0.2
IMPERVIOUS 0.41 0.9 IMPERVIOUS 0.16 0.95
Total'A' i 0.855968779 Total'A' 0.15759871
Weighted'C' 0.537215 I Weighted'C' 0.95 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Q;=CiA 3.26 cfs Q,=CiA , 1.06 cfs
Q FROM DA-104 Drainage Area= 19,358 Q FROM DA-105 Drainage Area= 24,210
Drainage Area= 0.44 Acres Drainage Area= 0.56 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-_ValueW Surface Acres C-ValueW
GRASSY 0.21 0.2 GRASSY 0.38 0.2
IMPERVIOUS 0.23 0.9 IMPERVIOUS 0.18 0.9
Total A' 0.444398531 Total'A' 0.55578512
Weighted'C' 0.563596 I Weighted'C' 0.421912 I
Intensity'i' I 7.1 Intensity's' 7.1
Q;=CiA 1.78 cfs Q;=CiA } 1.66 cfs
Q FROM DA-106 Drainage Area= 24,534 Q FROM DA-107 Drainage Area= 79,960
Drainage Area= 0.56 Acres Drainage Area= 1.84 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(') Surface Acres C-Value/"
GRASSY 0.35 0.2 GRASSY 1.37 0.2
IMPERVIOUS 0.21 0.9 IMPERVIOUS 0.46 0.9
Total'A' 0.56322314 Total'A' 1.83562902
Weighted'C' 0.461352 I Weighted'C' 0.37855 I
Intensity'i' 1 7.1 Intensity'i' 7.1
Q,=CiA 1.84 ,cfs Q;=CiA } 4.91 cfs
...C c IVED
FEB 1 7 2010
;73Y:
9_OF J.4 Revision Date:2/16/2010

The Pearl East Coast Engineering and Surveying,P.C.
STORM DRAINAGE FLOW CALCULATIONS ' JCR
Q FROM DA-108 Drainage Area= 82,167 Q FROM DA-109 Drainage Area= 70,627
Drainage Area= 1.89 Acres Drainage Area= 1.62 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value n) Surface Acres C-Value r11
GRASSY 1.39 0.2 GRASSY 0.32 0.2
IMPERVIOUS 0.49 0.9 IMPERVIOUS 1.30 0.9
Total A' 1.886294766 Total'A' 1.62137282
Weighted'C' 0.382508 I Weighted'C' 0.759984 I
Intensity's' I 7.1 Intensity'i' I 7.1
Q;=CiA If 5.12 cfs Q;=CiA 8.75 cfs
Q FROM DA-110 Drainage Area= 48,378 Q FROM DA-111 Drainage Area= 33,974
Drainage Area= 1.11 Acres Drainage Area= 0.78 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(I) Surface Acres C-Value(1)
GRASSY 0.88 0.2 GRASSY 0.60 0.2
IMPERVIOUS 0.23 0.9 IMPERVIOUS 0.18 0.9
Tofal'A' 1.110606061 Total'A' 0.77993572
Weighted'C' 0.346676 I Weighted'C' 0.363451 I
Intensity's' I 7.1 Intensity'i' I 7.1
Q;=CiA IJ 2.73 cfs Q,=CiA 2.01 cfs
Q FROM DA-112 Drainage Area= 44,941 Q FROM DA-113 Drainage Area= 43,763
Drainage Area= 1.03 Acres Drainage Area= 1.00 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value nl Surface Acres C-Value r1r
GRASSY 0.76 0.2 GRASSY 0.74 0.2
IMPERVIOUS 0.27 0.9 IMPERVIOUS 0.26 0.9
Total A' 1.031703398 Total'A' 1.00466024
Weighted'C' 0.381694 I Weighted'C' 0.38217 I
Intensity's' 1 7.1 Intensity'i' 7.1
Q;=CiA 2.80 cfs Q,=CIA ' 2.73 cfs
Q FROM DA-114 Drainage Area= 31,572 Q FROM DA-115 Drainage Area= 60,192
Drainage Area= 0.72 Acres Drainage Area= 1.38 Acres
Design Storm- 10 I-YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r1) Surface Acres C-Value(')
GRASSY 0.45 0.2 GRASSY 0.86 0.2
IMPERVIOUS 0.28 0.9 IMPERVIOUS 0.53 0.9
Total'A' 0.724793388 Total A' 1.38181818
Weighted'C' 0.467633 I Weighted'C' 0.466349 I
Intensity's' I 7.1 Intensity'I' 7.1
Q;=CIA 2.41 cfs Q;=CIA I 4.68 cfs
Q FROM DA-116 Drainage Area= 43,434 Q FROM DA-117 Drainage Area= 15,301
Drainage Area= 1.00 Acres Drainage Area= 0.35 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r1 Surface Acres C-Value r'i
GRASSY 0.61 0.2 GRASSY 0.18 0.2
IMPERVIOUS 0.39 0.9 IMPERVIOUS 0.17 0.9
Total'A' 0.997107438 Total'A' 0.35126263
Weighted'C' 0.471771 I Weighted'C' 0.536481
Intensity'I' i 7.1 Intensit
y I 7.1
Q;=CIA 3.34 cfs Q,=CiA 1.34 cfs
Q FROM DA-118 Drainage Area= 19,228 Q FROM DA-119 Drainage Area= 25,033
Drainage Area= 0.44 Acres Drainage Area= 0.57 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(') Surface Acres C-Value(')
GRASSY 0.28 0.2 GRASSY 0.35 0.2
IMPERVIOUS 0.16 0.9 IMPERVIOUS 0.22 0.9
Total'A' 0.441414141 Total'A' 0.5746786
Weighted'C' 0.458004 I Weighted'C' 0.472081 I
Intensity'i' I 7.1 Intensity's' 7.1
Q;=CiA 1.44 cfs Q;=CiA I 1.93 cfs
IrC>r'iVE' D
FEB 1 1 2010
BY:
if2OF, Revision Date:2/16/2010

The Pearl
STORM DRAINAGE FLOW CALCULATIONS East Coast Engineering and Surveying,P.C.
JCR
Q FROM DA-120 Drainage Area= 24,155 Q FROM DA-121 Drainage Area= 128,465
Drainage Area= 0.55 Acres Drainage Area= 2.95 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value W Surface Acres C-Value r'l
GRASSY 0.36 0.2 GRASSY 1.71 0.2
IMPERVIOUS 0.20 0.9 IMPERVIOUS 1.24 0.9
Total A' 0.554522498 Total A' 2.9491506
Weighted'C' 0.451803 I Weighted'C' 0.493808 I
Intensity'i' I 7.1 Intensity'i' I 7.1
Q;=CiA 1.78 cfs Q;=CiA II 10.34 cfs
Q FROM DA-122 Drainage Area= 64,711 Q FROM DA-123 Drainage Area= 49,611
Drainage Area= 1.49 Acres Drainage Area= 1.14 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value/// Surface Acres C-Valueltl
GRASSY 0.89 0.2 GRASSY 0.48 0.2
IMPERVIOUS 0.60 0.9 IMPERVIOUS 0.66 0.9
Total A' 1.485560147 Total'A' 1.13891185
Weighted'C' 0.480883 I Weighted'C' 0.606587 I
Intensity'i' I 7.1 Intensity 1' 1 7.1
Q;=CiA I 5.07 cfs Q;=CiA 4.91 cfs
Q FROM DA-124 Drainage Area= 32,950 Q FROM DA-125 Drainage Area= 60,669
Drainage Area= 0.76 Acres Drainage Area= 1.39 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Valuer°/ Surface Acres C-Value(1)
GRASSY 0.33 0.2 GRASSY 0.71 0.2
IMPERVIOUS 0.43 0.9 IMPERVIOUS 0.68 0.9
Total'A' 0.756427916 Total A' 1.3927686
Weighted'C' 0.598352 I Weighted'C' 0.542933 I
Intensity'i' I 7.1 Intensity'I 7.1
Q;=CIA 3.21 cfs Q;=CiA , 5.37 cfs
Q FROM DA-126 Drainage Area= 91,117 0 FROM DA-127 Drainage Area= 115,396
Drainage Area= 2.09 Acres Drainage Area= 2.65 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'/ Surface Acres C-Value n1
GRASSY 1.34 0.2 GRASSY 1.33 0.2
IMPERVIOUS 0.75 0.9 IMPERVIOUS 1.32 0.9
Total'A' 2.091758494 Total'A' 12.64912764
Weighted'C' 0.450862 I Weighted'C' 0.548775
Intensity'i' I 7.1 Intensity'I I 7.1
Q;=CIA 1 6.70 cfs Q;=CiA 1 10.32 cfs
Q FROM DA-128 Drainage Area= 95,097 Q FROM DA-129 Drainage Area= 215,850
Drainage Area= 2.18 Acres Drainage Area= 4.96 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value(1) Surface Acres C-Value frl
GRASSY 1.00 0.2 GRASSY 3.14 0.2
IMPERVIOUS 1.18 0.9 IMPERVIOUS 1.82 0.9
Total'A' 2.183126722 Total'A' 4.95523416
Weighted'C' 0.578277 I Weighted'C' 0.456913 I
Intensity'i' I 7.1 Intensity'i' 7.1
Q;=CIA 8.96 cfs Q;=CiA I 16.08 cfs
Q FROM DA-130 Drainage Area= 8,475 0 FROM DA-131 Drainage Area= 69,840
Drainage Area= 0.19 Acres Drainage Area= 1.60 Acres
Design Storm= 10 -YR storm Design Storm= 10 -YR storm
Surface Acres C-Value r'l Surface Acres C-Value
GRASSY 0.09 0.2 GRASSY 1.09 0.2
IMPERVIOUS 0.10 0.9 IMPERVIOUS 0.52 0.9
Total'A' 0.194559229 Total'A' 1.60330579
Weighted'C' 0.577628 I Weighted'C' 0.425275 I
Intensity'i' I 7.1 Intensity'i' t 7.1
Q;=CIA If 0.80 cfs Q 4.84 cfs
Q FROM DA-132 Drainage Area= 106,784
Drainage Area= 2.45 ' Acres
Design Storm= 10 -YR storm r-'�_
Surface Acres C-Value rr/ ■'�.X V'.
GRASSY 1.78 0.2
IMPERVIOUS 0.68 0.9 FEB 1 7 2010
Total'A' 2.451423324
Weighted'C' 0.393066 I
Intensity'i' 7.1 B
Q;=CiA ' �l6.84 cfs
JI OF 14' Revision Date:2/16/2010

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AVA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
January 28, 2010
Dr. DeCarol Williamson, Owner
DeCarol Williamson Enterprises
2618 New Village Way
Wilmington, NC 28405
Subject: Request for Additional Information
Stormwater Project No. SW8 031059
The Pearl
Brunswick County
Dear Dr. Williamson:
The Wilmington Regional Office received an application in the Express program to modify the
Stormwater Management Permit for The Pearl on January 19, 2010. 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. I'm still trying to understand exactly what development we are writing a permit for. Is it possible
to designate (show a boundary for) what areas are already constructed, what areas are
proposed, and what areas are future development? Some development is labeled as "future",
but has no proposed grading or numbered swales. The Division cannot issue a permit for
development that doesn't show sufficient proposed grading or stormwater treatment measures.
For those areas where development is unknown, future or preliminary, I suggest that the lines
which depict the layout of the buildings and parking, be removed from the plans, and a
maximum BUA limit be assigned to that tract. When final plans for that tract are developed, the
plans can be approved as either a plan revision (if low density), or as a modification for a
pocket of high density.
2. The information listed in the stormwater summary table is very helpful. However, the following
needs to be provided:
a. Please label which condominium buildings on the plans are 9-unit, 12-unit or 15-unit
buildings and provide typical building dimension details;
b. Please label the "Cottage Neighborhood" and which ones are single cottages and which
ones are duplexes;
c. Please provide the width of the golf cart path;
d. Please show and label the locations of the golf cart paths and pedestrian trails on the
plans.
3. None of the roadway section details include sidewalk and there are no sidewalks leading from
the condo parking lots to the buildings shown on the plans. Yet, there is over 708,000 square
feet of sidewalk being proposed. Please show the sidewalk locations on the road section
details and/or on the plans and provide dimensions.
4. There are two Swales numbered 58 on sheet C-13, one behind Building 97 and one beside
Building 89.
Wilmington Regional Office
127 Cardinal Drive Extension,Wilmington,North Carolina 28405 _One
Phone:[phone] FAX:[phone] Customer Service:1-877-623.6748 l Carolina
Internet:www.ncwaterquality.org ` atura I✓
An Equal Opportunity I Affirmative Action Employer "

Dr. Williamson
January 28, 2010
Stormwater Application No. SW8 031059 Mod.
5. Please add/show drainage easements on the plans. All swales and incidental
piping must be located in either drainage easements or dedicated common area.
6. The drainage area map appears to include only the paved roads and parking
areas as the drainage area of a swale. What about sidewalks, roof drainage and
the development on the single family lots? Unless lots are deed-restricted to be
graded away from the street, the lots will contribute runoff to the swale. At the
very least, you should assume that one-half of the lot will be graded to drain
toward the street, meaning that all of the driveway's BUA and half of the
remaining BUA should be accounted for in the swale calculations. I usually allow
1,000 square feet for the driveway area and then subtract that from the lot's BUA
allocation, then divide by 2 and add the 1,000 back in to get the total lot BUA
contributed to the swale for that lot. The most conservative calculation is to
account for the entire lot and BUA in the drainage area of the swale.
7. There are several instances of"stacking" of the swales. This means that several
swales (either short, non-curb outlet swales or actual curb outlet swales) are
joining together to form one swale and being discharged. The water from one
designated curb outlet swale should not be flowing into and joining another
designated curb outlet swale since this defeats one aspect of the intent of low
density development by concentrating the runoff. The intent is that each
impervious road or parking lot drainage area has its own curb outlet swale that
discharges to the receiving stream or to wetlands or to another non-curb outlet
swale. However, I've found a few instances of stacked swales in the previous
approved plans so I have no choice but to allow it again, but for future projects,
stacking of the swales will not be permitted.
8. Please make sure that where swales are stacked, the drainage area of the last
curb outlet swale in the "stack" includes the drainage area of all the upstream
swales.
9. In the hatched area of the project that is not being revised, located on sheets C-
3, C-4, C-7 and C-8, there are no swales provided to treat the runoff from the
inverted crown parking lots located between buildings 2 & 3, 4 & 5, 6 & 7, and 10
& 11. How is that runoff being treated? For that same unrevised development,
none of the 5:1 swales that are noted on the plan are numbered. Please number
and provide calculations and add them to the drainage area map.
10. The spot elevations on the parking lot between Buildings 10 and 11 (Sheet C-3)
says the runoff is draining north, but the flow arrows point south.
11. There are a few instances where swales are very convoluted, turning back on
themselves and/or bucking grade to obtain the required 100' length. Sharp turns
create erosion problems, and bucking grade creates deep swales. However, I
again see where the previous approval allowed these situations to occur. These
situations should be re-evaluated to see if an alternate solution can be provided.
It may be as simple as relocating the low point of the road. Keep in mind that
curb outlet swales are not the only option for low density curbed streets. You are
allowed to provide traditional treatment BMP's or to direct runoff to a 100' long
vegetated area where runoff can sheet flow in a diffuse manner across that 100'
vegetated area. A level spreader is required to achieve the diffuse flow.
Page 2 of 4

Dr. Williamson
January 28, 2010
Stormwater Application No. SW8 031059 Mod.
12. Many of the curb outlet swales will end up being piped under the fairways to be
discharged to wetlands. The previous reviewer was apparently unaware that
under low density, no portion of the runoff can enter a piped collection system to
be discharged and still be permitted as low density. However, as it was
previously permitted this way, i again have no choice but to permit it under this
modification. Please evaluate the velocity at the end of any pipes that discharge
directly into wetlands for those portions of the project that have not already been
constructed. For velocities greater than 2 fps, please add some type of velocity
dissipation structure so that erosion of the wetland is eliminated.
13. A piped collection system is shown on sheet C-15, just south of the traffic circle
and a pipe is shown between Lots 111 and 112 on that same sheet. Piping of this
nature is not allowed under the low density option however, the previous
reviewer apparently did not catch this either. If the pipe between Lots 111 and
112 does not currently exist please either remove or reduce the length of the
piping and reestablish the swale, or provide a high density engineered system to
treat that runoff before it enters surface waters or wetlands.
14. There are a few instances where swales appear to terminate at elevations that
are a foot or more below the existing ground and are not draining to a wetland or
to a receiving stream or to another collection swale. Where will that runoff go?
Please refer to Swales 54, 90 and 93.
15. Due to the significant application deficiencies, please submit a reapplication fee
of$250.
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 February 4,
2010, 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. Please note that a second significant request for additional information
may result in the return of the project. If that occurs, you will need to reschedule the
project through the Express coordinator for the next available review date, and resubmit
all of the required items, including the application fee.
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 label all packages and cover letters as "Express" and reference the project
name and State assigned project number on all correspondence. Any original
documents that need to be revised have been returned to the engineer or agent. All
original documents must either be revised and 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.lewisencdenr.gov.
Page 3 of 4

Dr. Williamson
January 28, 2010
Stormwater Application No. SW8 031059 Mod.
Sincerely,
./&iG% Geee-4(2-)
Linda Lewis
Environmental Engineer III
GDS/arl: S:lwgs\stormwater\addinfo120101031059mod.jan10
cc: Chris Russell, P.E., East Coast Engineering and Surveying
Wilmington Regional Office Stormwater File
Page 4 of 4

Lewis,Linda
From: Lewis,Linda
Sent: Thursday, January 28, 2010 1:08 PM
To: 'Chris Russell'
Subject: 031059 Mod Express Review Comments
Attachments: 031059mod.janl0.pdf
Chris:
Apparently the previous reviewer made a few errors in the permitting of the project and I need to address those
errors. The biggest are the amount of piping, stacking the swales, and not including all parts of the swale's
drainage area.
For those parts of the project that aren't yet built, these need to be addressed. For those parts of the project
already built, we're just going to have to abide by what the original 2006 permit modification allowed. But
understand that what we permitted in 2006 for this project won't fly for any future projects.
Linda
i

• 'Lewis,Linda
From: Lewis,Linda
Sent: Wednesday, January 20, 2010 10:11 AM
To: 'Chris Russell'
Cc: Scott, Georgette; Russell, Janet
Subject: Fee for The Pearl SW8 031059
Chris:
We received the additional information for this project today. However, the additional $1500.00 fee was not
included. Instead, there was a check for$500.00 and an explanation from you that the fee for a low density
minor modification in Express is only$1000.00.
I think you need to understand that the term "minor modification" has dual meanings. A few years ago, the
Division added a new service to their Express program for a"minor modification"to an existing permit. This is a
special category that is used for simple modifications to existing projects that require a rewrite of the permit,
such as BUA allocation changes or approving the addition of BUA to an existing BMP. The fees for this
category were set at one-half of the applicable high density or low density Express review fee.
A year or so later, the 2008 rules came out and also used the term Minor Modification, but in a totally different
sense. In the 2008 rules, a determination that a project is a minor modification means only that it gets to keep
its original density level if the project is low density, or allows a previously approved BMP to not need to be
redesigned to current standards if it does not need to be enlarged. It has nothing to do with the fee.
As ! thought ! explained in the letter, this project is a minor modification from the standpoint of the 2008 rules,
in that it will keep its previously approved density level, but it is NOT a minor modification from the standpoint
of the Express program because the amount of BUA is being increased and there are large-scale changes to
the site layout and curb outlet swale drainage areas and locations. These changes require a level of review
that does not qualify as an Express minor modification.
When we first met on this project, it was presented as a few minor changes to the layout that would not
increase the amount of built-upon area beyond what was already permitted and would not impact the existing
curb outlet swales. Under those circumstances, we decided that a plan revision was appropriate.
After further review, we discovered that the layout changes were pretty significant, that the curb outlet swales
had to be recalculated and relocated because of the changes, and that the BUA was increasing over the
previously approved amount, but was still within the 25% maximum previously approved. Based on these new
revelations, it was determined that the plan revision was not the appropriate way to handle this modification
and that it needed to be reviewed as a modification, thus the requirement for the additional $1500.00 fee.
I hope this explains the subtle differences and that a check for$1500.00 will be forthcoming shortly.
Thanks,
Linda
Please note my new email address is [e-mail]
Linda Lewis
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 213405
910-796-7215

t-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may
be disclosed to third parties.
2

East Coast Engineering & Surveying, P. C.
Engineers, Planners, & Surveyors
RE J4N19 2010
January 19,2010
3
Ms. Linda Lewis
NCDENR
Water Quality Section
127 Cardinal Drive Extension
Wilmington,North Carolina 28405-3845
Subject: The Pearl
Calabash,North Carolina
Low Density Stormwater Plan Revision comment response
Dear Ms. Lewis:
We received your comments via email on 12/17/09 and provide the following remedies.
1. Per the application submitted with the 2008 permit modification, a total of 187.59 acres of built-upon area was
permitted As we discussed in our meeting, in order for the proposal to be reviewed as a plan revision, the proposed
BUA could not go over this amount. The proposed BUA listed on the new index sheet is 199.77 acres.Because you
went over the previously permitted BUA (187.59 acres), but stayed under the maximum 25%limit, the project is a
minor modification.It keeps the original 25%density limit, but it is now considered a modification,with a:2000.00
review fee in Express. Please submit an additional$1500.00 fee to review this modification in Express.
a. Per the Stormwater Unit Fee Schedule printed from the NCDENR website
lists the fee for a minor modification for a low density project as $1000.00. A
check in the amount of$500.00 was provided with the initial submittal. A
check in the amount of$500.00 is being included with this submittal to cover
the remainder of the fee.
2. Since the project is not subject to the 2008 rules, the project area used to determine the 25%maximum BUA should
remain at the previously permitted 806.13 acres. You don't get to add more, but we don't penaliteyou by recalculating
to the 2008 rules. Unless you can show me where the additional 1.96 acres of project area was added on to the
previously approved site,you're stuck with the 806.13 acres. There wasn't enough wetland area within the project to
warrant removing any of it from the site area under the wetland calculation policy that was in effect at the time.
a. The maximum impervious area was calculated using 25% of 806.13 acres as
requested above and shown on the revised Stormwater Management Permit
Application, SWU-101,included with this submittal.
3. Please add the curb outlet swale numbers to the plans per the supplement.
a. The curb outlet swale numbers have been added to the plans per the revised
Low Density Supplement, SW-401. A copy of the revised plan sheets has been
included with this submittal.
R CE •
Red Apple Professional Park * 712 Village Road SW, Suite 105 $Y:
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

Ms. Lewis Page Two The Pearl
January 19,2010 Stormwater Comments
4. Please indicate which previously approved carb outlet swales have been removed or relocated and which ones are newly
added Please indicate where the drainage area or built-upon area within the drainage area of any previously approved
curd outlet swale has been increased or decreased For those added removed, relocated or revised swales,please update
the airb outlet supplement form,provide a revised swale drainage area map, and prvvide revised swale velocity
calculations.
a. A.revised drainage area map, sheet DA-MAP,has been included with this
submittal. The Low Density Supplement, SW-401, has been revised to include
swales and flow velocities as requested.
5. Please submit a completed application form SW/U--101, a low density&swale supplement form, and revised deed
restrictions. The previously approved 332 single family lots were all permitted at 5,000 sf of BUA each. The 355
proposed single family lots have varying B UA limits from 3,275 to 6,200. Have any of the previously approved 332
single family lots been sold at the 5000 sf limit?If so,you will need the signature of the lot owner on the proposed deed
restriction amendment to change the BUA allocation.
a. An updated SWU-101,Low Density Supplement and Low Density Residential
Subdivisions with Curb Outlet Swales Deed Restrictions & Protective
Covenants form has been included with this submittal. Table 1 has been
included as an attachment to the deed restrictions as a breakdown of the
impervious area allocation for the 355 single family lots. None of the single
family lots has been sold.
6. Does the 76.45 acres of overall roads and parking include the roads within the individual subdivision tracts that
branch off of the main road?This is important for future submittals so that only the lot BUA and other non-road
BUA is calcxrlated for those areas.
a. The overall roadway calculation includes the roadway and parking within the
individual subdivision tracts that branch off of the main roadway.
The following items are included with this submittal:
• Two sets of plans relevant to the stormwater submittal, Sheet C1 —Index Sheet, Sheets C2 thru C20
—Stormwater Plan,Sheet C21—Stormwater Details and DA-MAP—Drainage Area Map.
• One original and one copy of the Stormwater Management Permit Application, SW/U--101.
• One original and one copy of the Low Density Supplement, SW/-401.
• One original and one copy of the required Low Density Residential Subdivisions with Curb Outlet Swales
Deed Restrictions&Protective Covenances.
• Two copies of the Stormwater Calculations Sheets 1 —12.
• Check in the amount of$500.00 to cover the remaining permit fee.
Should you have any questions or require any additional information,please contact our office.
Sincerely,
J. Christian Russell,P.E.
Enclosures
pc: Dr.DeCarol Williamson,DWE RECEIVED
D
Mr.Michael Borton,DWE
File: 1300.02 The Pearl Master Stormwater Plan JAN 1 9 2010
BY:
Red Apple Professional Park * 712 Village Road SW, Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

Lewis,Linda
From: Lewis,Linda
Sent: Thursday, December 17, 2009 3:35 PM
To: 'Chris Russell'
Cc: Russell, Janet
Subject: The Pearl SW8 031059
Chris:
I had Tripp Engineering run us a set of the 2008 approved plans. They don't have the stamp on them, so I can't
be absolutely sure they are what we approved, but it's all we have. Based on a review of the 2008 approved
plans and permit, I have the following comments regarding the proposed plan revision:
1. Per the application submitted with the 2008 permit modification, a total of 187.59 acres of built-upon
area was permitted. As we discussed in our meeting, in order for the proposal to be reviewed as a plan
revision, the proposed BUA could not go over this amount. The proposed BUA listed on the new index
sheet is 199.77 acres. Because you went over the previously permitted BUA (187.59 acres), but stayed
under the maximum 25% limit, the project is a minor modification. It keeps the original 25% density
limit, but it is now considered a modification, with a $2000.00 review fee in Express. Please submit an
additional $1500.00 fee to review this modification in Express.
2. Since the project is not subject to the 2008 rules, the project area used to determine the 25% maximum
BUA should remain at the previously permitted 806.13 acres. You don't get to add more, but we don't
penalize you by recalculating to the 2008 rules. Unless you can show me where the additional 1.96
acres of project area was added on to the previously approved site, you're stuck with the 806.13 acres.
There wasn't enough wetland area within the project to warrant removing any of it from the site area
under the wetland calculation policy that was in effect at the time.
3. Please add the curb outlet swale numbers to the plans per the supplement.
4. Please indicate which previously approved curb outlet swales have been removed or relocated and
which ones are newly added. Please indicate where the drainage area or built-upon area within the
drainage area of any previously approved curb outlet swale has been increased or decreased. For
those added, removed, relocated or revised swales, please update the curb outlet supplement form,
provide a revised swale drainage area map, and provide revised swale velocity calculations.
5. Please submit a completed application form SWU-101, a low density & swale supplement form, and
revised deed restrictions. The previously approved 332 single family lots were all permitted at 5,000 sf
of BUA each. The 355 proposed single family lots have varying BUA limits from 3,275 to 6,200. Have
any of the previously approved 332 single family lots been sold at the 5000 sf limit? If so, you will need
the signature of the lot owner on the proposed deed restriction amendment to change the BUA
allocation.
6. Does the 76.45 acres of overall roads and parking include the roads within the individual subdivision
tracts that branch off of the main road?This is important for future submittals so that only the lot BUA
and other non-road BUA is calculated for those areas.
Please submit the requested information by Monday, December 28, 2009 to continue with the review.
Thanks,
Linda
Please note my new email address is [e-mail]
i

Linda Lewis
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405
910-796-7215
E-mail correspondence tc and from this address may be subject to the North Carolina Public Records Law and may
be disclosed to third parties.
2

Job No. 07051
Date: 12/16/09
TRIPP ENGINEERING, P.C.
41.9 Chestnut Street, Wilmington,NC 28401
Phone: [phone] . FAX: [phone] OF
Email: [e-mail] ,� C :
6p,,9
LETTER OF TRANSMITTAL
To: NCDENR
Attention: Linda Lewis
Subject: The Pearl
FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER
I am sending you: ( X) ATTACHED ( ) UNDER SEPARATE COVER
( X) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( ) Other
Copies Item No. Description
1 set Stormwater Plans
1 invoice_
These are transmitted as checked below:
( ) For Approval ( X ) For Your Use ( ) Sign & Return ( ) Review
Remarks: Per your request.
cc:
Signed: Elizabeth Brosman

0 TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington,North Carolina 28401
Phone: [phone]• FAX: [phone]
December 16, 2009
NCDENR
Division of Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845 2.
Attn: Ms. Linda Lewis LSE^ ,
rya _G0c.,
4 Index: 07051
Re: The Pearl
Copies and Reproductions:
1 complete set as requested
22 black line 30x42 @ $6 $ 132.00
Current Fee: $ 132.00
Paid to Date: ($ 0.00)
Due at this Time: $ 132.00

Lewis,Linda
From: Lewis,Linda
Sent: Monday, December 14, 2009 6:15 PM
To: 'Chris Russell'
Cc: Russell, Janet; Scott, Georgette
Subject: The Pearl plan revision
Chris:
I'm experiencing some technical problems with the review of this Express application. The previously approved
January 2008 plans are not in the file, so I have nothing to compare the proposed plan revision to. I have
asked David if he knows the whereabouts of the approved plans. Hopefully, I'll have them soon.
Please let me know about the following:
1. Has the drainage area or built-upon area of any of the previously approved curb outlet swales been
increased or decreased due to the proposed road changes? If so, please provide a revised drainage
area map, revised swale calculations and a revised curb outlet supplement.
2. None of the curb outlet swales is numbered. Please number the swales. The 2008 application
contained 22 curb outlet swales. I understand that there will be no swale information in the parts of the
project that are not yet designed.
3. I don't see a revised overall density calculation on either the plans or in the application documents.
Please provide.
Thanks,
Linda
Please note my new email address is [e-mail]
Linda Lewis
NC Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405
910-796-7215
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may
be disclosed to third parties.
1

East Coast Engineering & Surveying, P. C.
Engineers, Planners, & Surveyors
The Pearl
Calabash, North Carolina
PROJECT NARRATIVE
The Pearl Golf Links is located off of old Georgetown Road (NC 179) between Sunset Beach and
Calabash. It shares its boundary with Seatrail Golf& Plantation and Cape Side subdivision to the
east,Pine Burr Acres, Carlyle Acres, N/F Mary Home, and N/F Luther Hughes to the west, Sunset
Lakes subdivision and the Calabash River to the south and Old Georgetown Road to the north.
The Pearl is an existing 808.09 acre tract with a Stormwater project boundary of 799.10 acres.
The overall built-upon area will be maintained at 25% per the requirements of Section .1005 of the
stormwater rules. All roadways and parking areas will have curb and gutter with curb breaks, curb
inlets and slotted drains to collect the stormwater runoff from the impervious areas. Due to the flat
topography in portions of the project, slotted drains are utilized as curb inlets to reduce the outlet
invert of the discharged stormwater runoff. This will reduce the depth of the treatment swales as
well as the width. Each outlet will be directed to treatment swales that will maintain a 5:1 (H:V) side
slope or flatter for a minimum of 100' prior to release. The longitudinal slope will be maintained at
no steeper than 5% and carry the runoff from the 10 year storm in a non erosive manner. Dense
vegetated cover will be maintained for each swale and will be located in a dedicated common area or
recorded drainage easement. All other swales used to convey stormwater runoff will maintain a 3:1
(H:V) side slope or flatter.
All fill in wetlands was permitted by the United States Aiiiiy Corps of Engineers. The permits were
obtained by Land Management Group of Wilmington, North Carolina. The permit includes fill,
piping and all other disturbance to wetlands or waters of the United States.
DEC 0 3 2009
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

East Coast Engineering & Surveying, P.
Engineers, Planners, &Surveyors
December 2,2009
Ms. Linda Lewis
NCDENR
Water Quality Section
127 Cardinal Drive Extension
Wilmington,North Carolina 28405-3845
Subject: The Pearl
Calabash,North Carolina
Low Density Stormwater Plan Revision Additional Information
Dear Ms. Lewis:
Per your request during our submittal meeting on 12/1/09,please find the following additional information:
1. 2 copies of the revised Index Sheet that includes the stormwater data summary listing the breakdown
of allocated built-upon area(BUA).
2. 1 copy of the revised Stormwater Narrative that includes the use of slotted drains as curb inlets.
3. 1 copy of a map showing the old alignment of the roadways vs. the new alignment of the roadways.
A copy of this letter and the items listed above are being emailed to you in .PDF format for your use. A hard
copy of this letter as well as the items listed above will be mailed to your office for your file.
Should you have any questions or require any additional information,please contact our office.
Sincerely,
J. Christian Russell,P.E.
Enclosures RECI1VEID
pc: Dr.DeCarol Williamson,DWE DEC 0 3 2009
Mr.Michael Borton,DWE
File: 1300.02 The Pearl Master SW Plan BY:
Red Apple Professional Park * 712 Village Road SW, Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

East Coast Engineering & Surveying, P. C.
Engineers, Planners, &Surveyors
The Pearl
Calabash, North Carolina
PROJECT NARRATIVE
The Pearl Golf Links is located off of old Georgetown Road (NC 179) between Sunset Beach and
Calabash. It shares its boundary with Seatrail Golf& Plantation and Cape Side subdivision to the
east,Pine Burr Acres, Carlyle Acres,N/F Mary Home,and N/F Luther Hughes to the west,Sunset
Lakes subdivision and the Calabash River to the south and Old Georgetown Road to the north.
The Pearl is an existing 808.09 acre tract with a Stormwater project boundary of 799.10 acres.
The overall built-upon area will be maintained at 25% per the requirements of Section .1005 of the
stormwater rules. All roadways and parking areas will have curb and gutter with curb breaks, curb
inlets and slotted drains to collect the stormwater runoff from the impervious areas. Due to the flat
topography in portions of the project, slotted drains are utilized as curb inlets to reduce the outlet
invert of the discharged stormwater runoff. This will reduce the depth of the treatment swales as
well as the width. Each outlet will be directed to treatment swales that will maintain a 5:1 (H:V) side
slope or flatter for a minimum of 100' prior to release. The longitudinal slope will be maintained at
no steeper than 5% and carry the runoff from the 10 year storm in a non erosive manner. Dense
vegetated cover will be maintained for each swale and will be located in a dedicated common area or
recorded drainage easement. All other swales used to convey stormwater runoff will maintain a 3:1
(H:V) side slope or flatter.
All fill in wetlands was permitted by the United States Army Corps of Engineers. The permits were
obtained by Land Management Group of Wilmington, North Carolina. The permit includes fill,
piping and all other disturbance to wetlands or waters of the United States.
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

STORMWATER DATA SUMMARY
1. 355 SINGLE FAMILY LOTS=1,793,900 SF BUILT-UPON AREA(BUA)
a. 108 LOTS APPROX.100'x 150' @ 6,200 SF EACH(LOTS 1-49,79-97,106-108,167-184,337-355)
b. 55 LOTS APPROX.90'x 150'@ 5,900 SF EACH(LOTS 50-54,109-130,185-212)
c. 113 LOTS APPROX.75'x 130'@ 4,700 SF EACH(LOTS 55-78,131-145,213-234,285-336)
d. 21 LOTS APPROX.60'x 130 @ 3,750 SF EACH(LOTS 146-166)
e. 58 LOTS APPROX.50'x 120'(413,275 SF EACH(LOTS 98-105,235-284)
2. OVERALL ROADS&PARKING=3,329,991 SF BUILT-UPON AREA(BUA)
3. RESIDENTIAL CONDOMINIUM AREA:
a. 11-15 UNIT BLDGS.@ 10,838 SF EACH=119,218 SF BUILT-UPON AREA(BUA)
b. 18-15 UNIT BLDGS.@ 10,550 SF EACH=189,900 SF BUILT-UPON AREA(BUA)
c. 85-9 UNIT BLDGS.(414,340 SF EACH=368,900 SF BUILT-UPON AREA(BUA)
d. 8-12 UNIT BLDGS.@ 8,382 SF EACH=67,056 SF BUILT-UPON AREA(BUA)
4. COTTAGE NEIGHBORHOOD:
a. 1-SINGLE COTTAGE @ 2,000 SF BUILT-UPON AREA(BUA)
b. 84-DUPLEX COTTAGES @ 3,600 SF EACH=302,400 SF BUILT-UPON AREA(BUA)
5. WEST GOLF COURSE CLUBHOUSE=11,589 SF BUILT-UPON AREA(BUA)
6. EAST GOLF COURSE CLUBHOUSE=12,000 SF BUILT-UPON AREA(BUA)
7. RESORT VILLAGE SLOGS.=186,227 SF BUILT-UPON AREA(BUA)
8. SALES CENTER BLDG.=8,056 SF BUILT-UPON AREA(BUA)
9. GOLF COURSE MAINTENANCE&RESORT SERVICES BLDGS.=38,986 SF BUILT-UPON AREA(BUA)
10. TENNIS CLUBHOUSE&COURTS=61,256 SF BUILT-UPON AREA(BUA)
11. GOLF SCHOOL BLDG.-BASKETBALL&BOCCE BALL COURTS=10,772 SF BUILT-UPON AREA(BUA)
12. EMENITY POOL BLDGS.&HARDSCAPE=59,250 SF BUILT-UPON AREA(BUA)
13. PADESTRIAN TRAILS(8'WIDE)=370,415 SF BUILT-UPON AREA(BUA)
14. SIDEWALKS(6'WIDE)=708,080 SF BUILT-UPON AREA(BUA)
15. GOLF COURSE CART PATHS=438,172 SF BUILT-UPON AREA(BUA)
16. UNALLOCATED BUA=624,053,85 SF BUILT-UPON AREA(BUA)
TOTAL BUILT-UPON AREA(BUA)=199.77 AC 8,702,221.85 SF(25%OF TOTAL STORMWATER BOUNDARY)
TOTAL PROPERTY BOUNDARY=808.09 AC 35,200,606.58 SF
TOTAL STORMWATER BOUNDARY=TOTAL PROPERTY BOUNDARY MINUS THE COASTAL MARSH(WETLANDS)=799.10 AC 34,808,887.38 SF
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East Coast Engineering & Surveying, P. C.
Arj41"""`
Engineers, Planners, &Surveyors
December 2,2009
Ms.Linda Lewis
NCDENR
Water Quality Section
127 Cardinal Drive Extension
Wilmington,North Carolina 28405-3845
Subject: The Pearl
Calabash,North Carolina
Low Density Stormwater Plan Revision Additional Information
Dear Ms.Lewis:
Per your request during our submittal meeting on 12/1/09,please find the following additional information:
1. 2 copies of the revised Index Sheet that includes the stormwater data summary listing the breakdown
of allocated built-upon area(B VA).
2. 1 copy of the revised Stormwater Narrative that includes the use of slotted drains as curb inlets.
3. 1 copy of a map showing the old alignment of the roadways vs.the new alignment of the roadways.
A copy of this letter and the items listed above are being emailed to you in.PDF format for your use. A hard
copy of this letter as well as the items listed above will be mailed to your office for your file.
Should you have any questions or require any additional information,please contact our office.
Sincerely,
______04die"
J.Christian Russell,P.E.
Enclosures
pc: Dr.DeCarol Williamson,DWE
Mr.Michael Borton,DWE
File: 1300.02 The Pearl Master SW Plan
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

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East Coast Engineering & Surveying, P. C.
f."
C.
Engineers, Planners, & Surveyors
5
December 1,2009 I
Ms. Linda Lewis 01-) ��-
NCDENR �U
Water Quality Section
127 Cardinal Drive Extension 5)3
Wilmington,North Carolina 28405-3845 1r
Subject: The Pearl
Calabash,North Carolina
Low Density Stormwater Plan Revision Submittal
Dear Ms. Lewis:
On behalf of our Client, enclosed is a plan revision submittal package for The Pearl located in Calabash,
North Carolina. This plan revision reflects permit SW8 031059Mod approved on 1/4/08. The overall built-
upon area will remain at 25%per the requirements of Section .1005 of the stormwater rules. The project will
continue to utilize a curb outlet system as provided in the previous permit. Each outlet swales will maintain a
5:1 (H:V) side slope or flatter for a minimum of 100'prior to discharge. The longitudinal slope of the outlet
swales will be no steeper than 5% and carry the flow from the 10 year storm in a non-erosive manner. A
dense vegetated cover will be maintained for each swale will be located in either a dedicated common area or
recorded drainage easement.
The purpose of the plan revision is to reflect the minor changes to the centerline of a small number of
internal roadways. Portions of the plan previously designated as future pockets of high density, have not as
yet been designed. These areas, once designed,will be added to the plan and a modification submittal will be
made at that time.
It is my understanding that there is a$500 express permitting review fee for a plan revision submitted under
the express program. A check for that amount has been included with this submittal. The following
represents the various components of the enclosed submittal package:
1. Two (2) sets of plans relevant to the Stormwater Plan Revision Submittal, Cover Sheet,Sheet C1-Index
Sheet,Sheet C2-C20-Stormwater Plan and Sheet C-21 -Stormwater Details.
2. Stormwater Narrative.
3. Check#3181 for$500.00 to cover the plan review fee.
Should you have any questions or require any additional information,please contact our office.
Sincerely,
_____460teetzzer
cnrvED
J. Christian Russell,P.E. DEC 0 iI_ 2009
Enclosures BY:
pc: Dr.DeCarol Williamson,DWE
Mr. Michael Borton,DWE
File: 1900.30 Williamson Professional Park-Erosion Control
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.:[phone] * Fax: [phone]
Firm License Number C-3014

jiti
f East Coast F gineering & Surveying, P.
Engineers, Planners, &Surveyors
The Pearl
Calabash, North Carolina
PROJECT NARRATIVE
The Pearl Golf Links is located off of old Georgetown Road (NC 179) between Sunset Beach and
Calabash. It shares its boundary with Seatrail Golf& Plantation and Cape Side subdivision to the
east,Pine Burr Acres, Carlyle Acres,N/F Mary Horne,and N/F Luther Hughes to the west,Sunset
Lakes subdivision and the Calabash River to the south and Old Georgetown Road to the north.
The Pearl is an existing 808.09 acre tract with a Stormwater project boundary of 799.10 acres.
The overall built-upon area will be maintained at 25% per the requirements of Section .1005 of the
stormwater rules. All roadways and parking areas will have curb and gutter with curb breaks and
curb inlets to collect the stormwater runoff from the impervious areas. Each outlet will be directed
to treatment swales that will maintain a 5:1 (H:V) side slope or flatter for a minimum of 100'prior to
release. The longitudinal slope will be maintained at no steeper than 5% and carry the runoff from
the 10 year storm in a non erosive manner. Dense vegetated cover will be maintained for each swale
and will be located in a dedicated common area or recorded drainage easement. All other swales
used to convey stormwater runoff will maintain a 3:1 (H:V) side slope or flatter.
All fill in wetlands was permitted by the United States Army Corps of Engineers. The permits were
obtained by Land Management Group of Wilmington, North Carolina. The permit includes fill,
piping and all other disturbance to wetlands or waters of the United States.
DEC 0 1 2009
BY:
Red Apple Professional Park * 712 Village Road SW, Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

(r -o r O3 t O S 1, For DENR Use ONLY
North Carolinaro Department of Environment and Reviewer: L.I,
ATA
Natural Resources Submit Request for Express Permit Review Time: 10 °i
NCDENR 6 1
Confirm 1V— 11'
FILL-IN all the information below and CHECK the Permit(s)you are requesting for express review. FAX or Email the completed form to Express
Coordinator along with a completed DETAILED narrative.site plan(PDF hie)and vicinity map(same Items expected in the application package
of the project location.Include this form in the application package.
2S 30
• Asheville Region Alison Davidson 828-296-4698;alison.davidson@ncmail net
• Fayetteville or Raleigh Region-David Lee 919-791-4203;davidleeigncmail.net
• Mooresville&-Patrick Grogan 704-663-3772 orpatrick grogantIncmaiLnet
• Washington Reglon-Lyn Hardison 252-946-9215 or lvn.hardisonAncmailnet
• Wilmington Region-Janet Russell 910-350-2004 orianetrussell(d.ncmaiLnet
NOTE:Project application received after 12 noon will be stamped in the following work day.
Project Name:THE PEARL County:BRUNSWICK
Applicant: DECAROL WILLIAMSON ENTERPRISES Company:
Address:2618 NEW VILLAGE WAY City:WILMINGTON, State: NC Zip: 28405
Phone:[phone] Fax: - - Email:
Project is Drains into SA waters Project Located in LUMBER River Basin
Engineer/Consultant:CHRIS RUSSELL, P.E. Company: EAST COAST ENGINEERING&SURVEYIN
Address:712 VILLAGE ROAD City: SHALLOTTE.State:NC Zip:28470 In
Phone:[phone] Fax: :[phone] Email:[e-mail] NOV 1 6 2009
(Check all that apply) owo
-7PG,! f
❑ Scoping Meeting ONLY ® DWQ, ❑ DCM, ❑ DLR, El OTHER: —
❑Stream Origin Determination: #of stream calls—Please attach TOPO map marking the areas in questions
❑State Stormwater ❑General ❑SFR, ❑Bkhd&Bt Rmp, 0 Clear&Grub, 0 Utility
►/ Low Density ®Low Density-Curb&Gutter _#Curb Outlet Swales ❑Off-site[SW (Provide permit#)]
❑ High Density-Detention Pond #Treatment Systems ❑ High Density-Infiltration _#Treatment Systems
❑ High Density-Bio-Retention _#Treatment Systems 0 High Density—Constructive Wetlands _#Treatment Systems
❑ High Density-Other _#Treatment Systems ❑ MODIFICATION SW (Provide permit#)
❑ Coastal Management ❑ Excavation&Fill ❑ Bridges&Culverts ❑Structures Information
❑ Upland Development ❑ Marina Development 0 Urban Waterfront
El Land Quality ❑ Erosion and Sedimentation Control Plan with acres to be disturbed.(CK# (for DENR use))
WETLANDS QUESTIONS MUST BE ADDRESSED BELOW
❑ Wetlands(401): Check all that apply Isolated wetland on Property®Yes❑ No
Wetlands on Site®Yes❑ No Buffer Impacts: ® No❑YES: acre(s)
Wetlands Delineation has been completed: // Yes❑ No Minor Variance: ® No 0 YES
US ACOE Approval of Delineation completed: ®Yes❑No Major General Variance ® No❑YES
404 Application in Process w/US ACOE: 0 Yes Z No 401 Application required: ❑Yes El No if YES,❑ Regular
Permit Received from US ACOE ®Yes❑ No Perennial, Blue line stream,etc on site❑yes >, No
For DENR use only
Fee Split for multiple permits: (Check# 1 Total Fee Amount $
SUBMITTAL DATES Fee I I SUBMITTAL DATES 1 Fee
CAMA $ Variance(❑Maj;❑Min) $
SW(0 HD,❑LD,0 Gen) $ 401: $
LQS $ Stream Deter,_ I $

•
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Russell, Janet
From: Chris Russell [[e-mail]]
Sent: Monday, November 16, 2009 11:26 AM
To: Russell, Janet
Cc: [e-mail]; [e-mail]; [e-mail]
Subject: Request for express review
Hi Janet,
Here is the request for express review that we talked about on the phone. The dates that the client is available are
11/25/09 and 11/30/09. If possible we would prefer to have the review on 11/25/09. As we discussed on the phone we
have already had a scoping meeting on this project with Chris Baker and Linda Lewis present. In an effort to maintain
some continuity with the project,due to its large size,we would like to request one of them to be assigned as the
reviewer. I think this would help both us and the State in that we will not have to start from scratch. This request is for
a plan revision. The overall density of the project is not changing,only the distribution and the alignment of some of the
roads within the project. Please let me know if you need anything else. Thanks.
F.01 rpm
The Pearl SW PEARL quad map The Pearl(Sent Express Request
Narrative.doc sent 11-16-09.p... 11-16-09 by EM... 11-16-09.doc
-die East Coast Engineering
Surveying, P.C.
Engineers,Planners,Stuveyois
I Christian "Chris" Russell,PE
crusseileces.biz
712 Village Rd_ SW,Suite 105
Post Office Box 2469 ""Shailotte,NC 28459
Office: 910-754-8029 Fax: [phone]
CONFIDENTIALITY STATEMENT:This e-mail transmission is intended only for the use of the individual or entity named above and may contain information that is
confidential,privileged,•and exempt from disclosure under applicable law.If you are not the intended recipient,you are hereby notified that any disclosure,copying,
distribution,or use of any of the information contained in this transmission is stricily prohibited.If you have received this transmission in error,please immediately
notify me by e-mail at the above address.
,4 iv 1 6 2009
l.'3WQ
1

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East Coast Engineering & Surveying, P. C
The Pearl Engineers, Planners, & Sun
Calabash, NC
PROJECT NARRATIVE
The Pearl is an existing 808.09 acre tract with a Stormwater project boundary of 799.10 acres. We
proposed a total built upon area of 199.77 acres. The residential and golf resort is proposed to
include 355 residential single family lots, 63 duplex cottages, 24 triplex cottages, 8-12 unit condos,
29-15 unit condos, 85-9 unit buildings, Owners residence, Village live work community, Inn, Spa,
Conference Center, West Golf Clubhouse, East Golf Clubhouse & Learning Center, West Tennis
Center,Welcome/Sales Center,Resort Maintenance facility with curb &gutter roadways.
The Stormwater will be treated by 5:1 curb outlet swales, sheet flow, and 3:1 grass lined swales. The
runoff will drain to the Calabash River,classification SA.
JE C V Et)
NOV 1 6 2009 -)
DWQ
PROD # . —
Red Apple Professional Park * 712 Village Road SW,Suite 105
Post Office Box 2469 * Shallotte,North Carolina 28459 * Tel.: [phone] * Fax: [phone]
Firm License Number C-3014

Russell, Janet
From: Chris Russell[[e-mail]]
Sent: Tuesday, November 17, 2009 2:28 PM
To: Russell, Janet
Cc: [e-mail]; [e-mail]; [e-mail]; 'Sabrina Babson'
Subject: RE: The Pearl
Janet,
I just heard from the client,Tuesday, December 1st at 10 am will be good. We will see you then. Thanks.
J. CHRISTIAN "CHRIS"RUSSELL, P.E.
EAST COAST ENGINEERING Sc SURVEYING,PC
RED APPLE PROFESSIONAL PARK
712 VILLAGE ROAD-SUITE 105
POST OFFICE BOX 2469
SHALLOTTE,NC 28459
(W)910-754-8029
(F)910-754-8049
CONFIDENTIALITY STATEMENT:This e-mail transmission is intended only for the use of the individual or entity named above and may contain information that is
confidential,privileged,and exempt from disclosure under applicable law.If you are not the intended recipient,you are hereby notified that any disclosure,copying,
distribution,or use of any of the information contained in this transmission is strictly prohibited.If you have received this transmission in error,please immediately
notify me by e-mail at the above address.
From: Russell Janet I[mailto:[e-mail]]
Sent: Tuesday, November 17, 2009 9:34 AM
To: [e-mail]
Subject: The Pearl
Chris:
I have spoken to Linda Lewis about the modification to the Pearl stormwater permit. Linda could see you and your client
on Tuesday, December 1st. Would you be available to come in on the 1't at 10:00 AM?
Janet
Janet M. Russell
Express Coordinator
910 796-7421
NOTE: change in email address: [e-mail]
Email correspondence to and from this address may be subject to the North Carolina
Public Records Law and may be disclosed to third parties.
1

Mr. Smith '
Page 2
June 8, 2009

Job No. 07051
1111 Date: 1/3/2007
TRIPP ENGINEERING, P.C.
419 Chestnut Street, Wilmington, NC 28401
Phone: [phone] • FAX: [phone]
Email: [e-mail]
LETTER OF TRANSMITTAL
To: NCDENR
Attention: David Cox
Subject: The Pearl
FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER
I am sending you: ( X ) ATTACHED ( ) UNDER SEPARATE COVER
( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( X ) Other
Copies Item No. Description
1 Reivsed Stormwater Narrative
1 Revised Page 2 Stormwater Application
1 Revised Page 2 Low Density Supplement
1 Revised Attachment B
These are transmitted as checked below:
( ) For Approval ( ) For Your Use ( ) Sign & Return ( ) Review
Remarks:
I
JAN-O 4 2008
cc: :) •
Signed: Charles D. Cazier

12/19/07 TE07051
Stormwater Narrative
The Pearl
Brunswick County,NC
The Pearl is an existing 806.13 acre tract. We propose a total built upon area of 187.59
acres which includes 16.26 acres of existing impervious area. The residential and golf
resort is proposed to include 332 residential lots allocated 5,000 sf each; 2,889,723 sf of
asphalt roadways; 1,250,607 sf of sidewalks and cart paths; 84,014 sf of duplex/triplex
drives; 1,517,320 sf of condos; 151,200 sf of duplex homes; 97,200 sf of triplex homes;
clubhouse and restaurant of 6,585 sf; tennis club of 6,286 sf; a village center of 51,134 sf;
maintenance buildings of 13,000 sf; a pump station of 384 sf; owner's residence of 9,150
sf; resort support of 25,990 sf; pool decking of 32,629 sf; and 385,000 sf allocated for
future development. This creates an impervious percentage of 23.27%. The project meets
the State's low density requirement of less than 25% impervious.
Stormwater will be treated by 5:1 curb outlet swales, sheet flow, and 3:1 grassed swales.
Runoff will drain to the Calabash River, classification SA.

TE 07051
Attachment"B"
The Pearl
Brunswick County, NC
SW8 031059 Mod
SWU-101 BI.6 Other On-site Impervious
Condos 1,517,320 sf
Duplex(s) 151,200 sf
Triplex(s) 97,200 sf
Clubhouse/Restaurant 6,585 sf
Tennis Club 6,286 sf
Village Center 51,134 sf
Maintenance Building(s) 13,000 sf
Pump Station 384 sf
Owner's Residence 9,150 sf
Resort Support 25,990 sf
Pool Decking 32,629 sf
Total 1,910,878 sf

!i]i
'Job No. 07O5t
Date: q'i92'a7
TRIPP ENGINEERING, P.C.
419 Chestnut Street, Wilmington, NC 28401
Phone: [phone] • FAX: [phone]
Email: [e-mail]
LETTER OF TRANSMITTAL
To: NC-10 z
Attention: D \V 1O CoX
Subject: Ile ?EMI-
FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER
I am sending you: (k) ATTACHED ( ) UNDER SEPARATE COVER'
( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications (X) Other
Copies Item No. Description
19 ED P '12.1L"rdN
c42.14X wukoo imf33
These are transmitted as checked below: --:
( ) For Approval A) For Your Use ( ) Sign & Return ( ) Review
l E P 1 3 2007
Remarks:
cc:
Signed: itiArA\I #7.4e

TRIPP ENGINEERING, P.C.
0 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
December 19,2007
NCDENR
Division of Water Quality
127 Cardinal Drive
Wilmington,NC 28405-3845
Attn: Mr.David Cox
Re: The Pearl Y'-'3
Permit No. SW8 031059
TE 07051 DEC 2 1 2007
Dear David: '?"'
As per your request, we have reviewed the villages and the maintenance areas to
be considered possible pockets of high density. We found the villages to be within the
35% maximum percentage. The maintenance area required a reduction of parking to get
below the 35% minimum. Please see enclosed highlighted areas with breakdowns for
your review. Please also find enclosed revised narrative, page 2 of the stormwater
application and revised low density supplement form.
Please review for approval and contact us with any questions, comments or if
you need additional information. Thank you.
Sincerely,
Tripp Engineering,P.C.
c4,4vs.„
arles D. Cazier, P.E.
CDC:dcb
Enc.

O�OF WTF9QG Michael F.Easley,Governor
c „.
William G.Ross Jr.,Secretary
> r North Carolina Department of Environment and Natural Resources
1 _ j
C leen H Sullins Director
Division of Water Quality
August 21, 2007
Mr. DeCarol Williamson
DeCarol Williamson Enterprises
2618 New Village Way
Wilmington NC, 28405
Subject: Request for Additional Information
Stormwater Project No. SW8 031059MOD
The Pearl
Brunswick County
Dear Mr. Williamson:
The Wilmington Regional Office received a Stormwater Management Permit Application for The Pearl
on June 26, 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 submit the wetlands survey map that was submitted to the A.C.O.E.
2. Please fill out the attached deed restriction supplement labeled "B".
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to September 21, 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 Division is allowed 90
days from the receipt of a completed application to issue the permit.
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].
Sincerely, 67(p.
David ox
Environmental Specialist
E N B/dwc:S:1WQ SISTO RMWATE R\AD D I N FO120071031059.aug 07
cc: Phillip Tripp
David Cox No°e Carolina
WiRO /V'atura!!y
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

GGD»
In accordance with Title 15 NCAC 2H.1000, the Coastal Stormwater Management Regulations, deed
restrictions and protective covenants are required for Low Density Residential Subdivisions with curb
outlet swales, where lots will be subdivided and sold. Deed restrictions and protective covenants are
necessary to ensure that the development maintains a "built-upon" area consistent with the applicable
regulation governing the density level.
acknowledge and affirm by my signature below, that I will cause the
following deed restrictions and protective covenants to be recorded for
prior to the sale of any lot:
1. The following covenants are intended to ensure ongoing compliance with State Storm water
Management Permit Number , as issued by the Division of Water Quality under
NCAC 2H.1000.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the storm water management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming
under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the Division of Water Quality.
6. The maximum allowable built-upon area per lot is square feet. This allotted amount
includes any built-upon area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but
is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, and coquina, but does
not include raised, open wood decking, or the water surface of swimming pools.
7. In the case of a lot within CAMA's regulated AEC, where the Division of Coastal Management
calculates a different maximum allowable built-upon area for that lot than is shown herein, the
governing maximum built-upon area for that lot shall be the most restrictive of the two.
8. This project proposes a curb outlet system. Each designated curb outlet swale shown on the
approved plan must be maintained at a minimum of 100'long with 5:1 (H:V) side slopes or flatter,
have a longitudinal slope no steeper than 5%, carry the flow from a 10 year storm in a non-erosive
manner, and maintain a dense vegetated cover.
9. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the
development except for average driveway crossings, is strictly prohibited by any persons.
10. Each lot will maintain a 30' wide vegetated buffer between all impervious areas and surface
waters.
11. All roof drains shall terminate at least 30'from the mean high water mark of surface waters.
12. Filling in, piping or altering any designated 5:1 curb outlet swale associated with the development
is prohibited by any persons.
Signature: Date:
, a Notary Public in the
State of , County,of
do hereby certify that personally appeared
before me this the day of , 20 , and acknowledge
the due execution of the foregoing instrument. Witness my hand and official seal,
SEAL
Signature
My Commission expires

FW:The Pearl
Subject: FW: The Pearl
From: "Charlie" <[e-mail]>
Date: Mon, 5 Nov 2007 11:13:59 -0500
To: <[e-mail]>
Charles D. Cazier, P.E.
Tripp Engineering
910-763-5100
NOTICE: This electronic correspondence and all attachments may contain privileged information
intended only for the use of the addressee. Any information contained within this correspondence is
provided for your convenience. No assertion of accuracy is made by Tripp Engineering, P.C. unless
physical documents are obtained, sealed AND signed. User assumes all responsibility for use of this
digital information.
Original Message
From: Charlie [mailto:[e-mail]]
Sent: Thursday, October 11, 2007 2:06 PM
To: [e-mail]; '[e-mail]
Subject:The Pearl
Rhonda and David,
In looking at both the Villages and the Maintenance areas we found the impervious
percentage to be close to 45%. I am not sure how you wanted us to do the numbers, but
I took overall drainage area without wetlands or surrounding golf holes. I feel the way
these areas were set up with a good amount of sheet flow that they still should be
considered Low Density and not Pockets of High.
We did pull out the areas we felt would be considered pockets of high and labeled them
for future permitting.
Please let me know if you need additional information.
Thank you,
Charles D. Cazier, P.E.
Tripp Engineering
910-763-5100
NOTICE: This electronic correspondence and all attachments may contain privileged information
intended only for the use of the addressee. Any information contained within this correspondence is
provided for your convenience. No assertion of accuracy is made by Tripp Engineering, P.C. unless
physical documents are obtained, sealed AND signed. User assumes all responsibility for use of this
digital information.
1 of 1 11/5/2007 11:15 AM

INFORMATION PERTAINING TO DEED RESTRICTIONS
AND PROTECTIVE COVENANTS
For
The Pearl
Brunswick County,North Carolina
In accordance with Title 15 NCAC 2H.1000, the Coastal Stormwater Management Regulations, deed restrictions and
protective covenants are required for Low Density Residential Subdivisions with curb outlet swales,where lots
will be subdivided and sold. Deed restrictions and protective covenants are necessary to ensure that the development
maintains a"built-upon" area consistent with the applicable regulation governing the density level.
I, Dr. DeCarol Williamson acknowledge and affirm by my signatures below that I will cause the following deed
restrictions and protective covenants to be recorded for The Pearl prior to the sale of any lot:
1. The following covenants are intended to ensure ongoing compliance with State Stormwater Management
Permit Number ,as issued by the Division of Water Quality under NCAC 2H.1000.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to maintain
compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express written consent
of the State of North Carolina,Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence of the
Division of Water Quality.
6. The maximum allowable built-upon area per lot is *See Table square feet. This allotted amount includes
any built-upon area constructed within the lot property boundaries, and that portion of the right-of-way
between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to,
structures, asphalt, concrete, gravel, brick, stone, slate, coquina, but does not include raised, open wood
decking,or the water surface of swimming pools.
7. In the case of a lot within CAMA's regulated AEC,where the Division of Coastal Management calculates a
different maximum allowable built-upon area for that lot that is shown herein,the governing maximum built-
upon area for that lot shall be the most restrictive of the two.
8. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan
must be maintained at a minimum of 100'long with 5:1 (H:V) side slopes or flatter,have a longitudinal slope
no steeper than 5%, carry the flow from a 10 year storm in a non-erosive manner, and maintain a dense
vegetated cover.
9. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the development
except for average driveway crossing,is strictly prohibited by any persons.
10. Each lot will maintain a 30'wide vegetated buffer between all impervious areas and surface waters.
11. All roof drains shall terminate at least 30' from the mean high water mark of surface waters.
12. Filling in, piping or altering avy designated 5:1 curb outlet swale associated with the development is
prohibited by any persons.
Signature of Owner ‘-..A "? ' .�, ®. — Date t.3/D r1
I, Ptto I.A 14• UR43.54 ,a Notary Public for the County of New Hanover , the State of North
Carolina,hereby certify that Dr. DeCarol Williamson appeared personally 's day
and being duly sworn acknowledge that the above statement was executed by him. QJ 1i.•uqe;�`�
Q.1 ...
r k. ,°S ..T•
ARY:
314
Witness by hand and notary seal,this day of 0 +- ,2007. ;
.Ite 'UBI.tG:aC1
SIGNATU � sue- My Commission Expires: �f�� i' ER••,4�Rao.*`��• �r`�
p P sv�sass;s�