SW4080101_HISTORICAL FILE_20120312

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW'yO�D�P/l
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
DOC DATE
A?IA DJ��
YYYYMMDD

$1.-*
COLUMBIA DEVELOPMENT, LLC RECEIVED
N.C.Dpt. o
of ENR
MAR 12 2012
Winston-Salem
Regional Office
March 7, 2012
VIA EMAIL TRANSMISSION TO srte.homewood a,ncdenr.kov and US MAIL,
Ms. Sue Homewood
North Carolina Division of Water Quality
585 Waughtown Road
Winston-Salem, NC 27107
REFERNECE: Stormwater Permit No. SW4080101
King Dollar General - Stokes County
Dear Sue:
As you are aware, the repairs have been made to the above noted pond and we are no longer in
noncompliance. Attached you will find executed NCDENR forms for the ownership transfer of
the pond that we sold on March I, 2010 which should finalize any further obligations Columbia
Development, LLC may have regarding the pond.
Thank you for your patience and assistance during this lengthy process, and should you have any
questions regarding the forms or require additional paperwork, please let us know.
Yours very truly,
COL.UMBIA DEVELOPMENT, LLC
Betsy Broad
Operations Manager
Enclosures
cc: Paul M. Dennis, Jr. Esq.
�1
MAR 1 3 2012
DENR • WATER QUA E Bt�C�
WETLANDS AND STORMW
P. O. BOX 10325, GREENSBORO, NC 27404 [phone] FAX: [phone]

I

MC�pp��pp��ar�DENR®�pp
North Carolina Department of Environment and Natural Resources
Division of Water Quaiity
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
January 30, 2012
CERTIFIED MAIL 7010 2780 0001 4221 6436
RETURN RECEIPT REQUESTED
Betsy Broad, Operations Manager
Columbia Development LLC
PO Box 10325
Greensboro, NC 27404
Subject: Stormwater Permit No. SW4080101
Response to Inspection Report and Notice of Noncompliance
King Dollar General
Stokes County
Dear Ms. Broad:
The Division of Water Quality (Division) has conducted a final inspection of the wet detention pond repairs to the above referenced
project. The Division now considers the Notice of Noncompliance issued on September 2, 2011 resolved to our satisfaction.
Please also note that you are required to maintain and operate all stormwater management practices in perpetuity per Stormwater
Permit No. SW4080101 issued September 5, 2008 as well as all approved modifications. Routine inspections are required per the
signed Operation and Maintenance Plan you submitted with your permit application.
Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-4964 or
sue.homewoo_d a,ncdenr.gov or myself at 336-771-5000.
Thank you for your attention to this matter. This Office is no longer considering sending a Recommendation for Enfnrcement to the
Director of the Division of Water Quality regarding these issues. Should you have any questions regarding these matters, please
contact Sue Homewood at this office at 336-771-4964 or sue.homewood .nedenr. ov or myself at 336-771-5000.
Sincerely,
W. Corey Basinger
Water Quality Regional Supervisor
Winston Salem Regional Office
cc: DWQ WSRO
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] k Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
NonhCaroiina
,aturallty

Homewood, Sue
From: Homewood, Sue
Sent: Tuesday, January 24, 2012 3:13 PM
To: 'T. Cooper James & Associates'
Subject: RE: Retention Pond at King / Storewater Permit #SW4080101
Thanks Betsy, I'll try to ride by in the next couple weeks.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.
From: T. Cooper James & Associates[mailto:[e-mail]]
Sent: Tuesday, January 24, 2012 10:28 AM
To: Homewood, Sue
Subject: RE: Retention Pond at King / Storewater Permit #SW4080101
Sue,
We received a call from Allen Brawley today and he advised that the improvements for the King pond noted in
his letter of January 9th, which you approved, have been completed and we wanted to advise you of this
information.
Additionally, we are forwarding the necessary paperwork to the current owner to transfer ownership of the
pond. Upon receipt of the fully executed application we will forward same to your attention.
Regards, Betsy
T. Cooper James & Associates
P.O. Box 10325
Greensboro, NC 27404
336-855-5555 office
336-854-5316 fax
--- On Tue, 1/17/12, Homewood, Sue <sue,homewood@ edenr.gov> wrote:
From: Homewood, Sue <[e-mail]>
Subject: RE: Retention Pond at King / Storewater Permit 4SW4080101
To: "T. Cooper James & Associates" <[e-mail]>
Cc: "Allen Brawley"<[e-mail]>

==1 AWI
WDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue
Governor
Winston-Salem Regional Office
585 Waughtown Street Winston-Salem, NC 27107
Phone: [phone] FAX: [phone]
NCaENR Customer Service: 1-877-623.6748
Internet: www.ncwatervuality.org
An Equal Opportunity 1 Affrmalive Action Employer
Charles Wakild, P. E.
Director
Dee Freeman
Secretary
None
rthCarofina
Naturally

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
January 13, 2012
CERTIFIED MAIL 7010 2780 0001 4221. 6450
RETURN RECEIPT REQUESTED
Betsy Broad, Operations Manager
Columbia Development LLC
PO Box 10325
Greensboro, NC 27404
Subject: Stormwater Permit No. SW4080101
Response to Inspection Report and Notice of Noncompliance
King Dollar General
Stokes County
Dear Ms. Broad:
The Division of Water Quality (Division) is in receipt of a proposed corrective action plan submitted January 10, 2012. The
corrective action plan has been developed by Brnwley Construction Company. The Division approves your proposed corrective action
plan. The plan must be implemented by March 31, 2012. Please provide the Division with notification upon completion of the
corrective action plan.
Thank you for your attention to this matter. This Office is no longer considering sending a Recommendation for Enforcement to the
Director of the Division of Water Quality regarding these issues provided that the corrective action plan is implemented properly.
These violations and any future violations are subject to civil penalty assessment of up to S25,000.00 per day for each violation.
Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-4964 or
sue.homewoodRncdenr.F.ov or myself at 336-771-5000.
Sincerely,
W. Corey Basinger
Water Quality Regional Supervisor
Winston Salem Regional Office
cc: Wetlands, Buffers, Stormwater Compliance and Permitting Unit, NOV-2100-PC-0490
DWQ WSRO
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown 5t. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service; 1-677-623-6748
Internet: www,ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
Nne
orthCarolina
Naturally

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Homewood, Sue
From: T. Cooper James & Associates [[e-mail]]
Sent: Tuesday, January 10, 2012 3:43 PM
To: Homewood, Sue
Cc: Allen Brawley
Subject: RE: Retention Pond at King / Storewater Permit #SW4080101
Attachments: King Pond Repairs and Renovations letter.pdf
Hi Sue,
Cooper James appreciated you meeting with Allen Brawley of Brawley Construction and him on the site to discuss the
issues with the pond. Pursuant to the meeting please find attached a letter from Allen Brawley certifying the repairs and
renovations he intends to construct to ensure the integrity of the pond. We trust that these items will meet with your
expectations and look forward to hearing from you.
Regards, Betsy
T. Cooper James & Associates
P.O. Box 10325
Greensboro, NC 27404
336-855-5555 office
336-864-5316 fax
--- On Fri, 12/9111, Homewood, Sue <[e-mail]> wrote:
From: Homewood, Sue <[e-mail]>
Subject: RE: Retention Pond at King / Storewater Permit #SW4080101
To: "T. Cooper James & Associates" <[e-mail]>
Cc: "Patterson, Robert" <[e-mail]>
Date: Friday, December 9, 2011, 5:06 PM
Hi Betsy,
Thank you for getting back to me. How about 12/19 at 9:30 am?
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]

�F °Lkr�-0 °Mz L@o -x LO° - I a L° -x LO - I L�L►Time sNewRmn Sd° L-H B° a-LN®° -oLL0
° Lk FrLAna

tis DT BRAWLEY CONSTRUCTION CO:
January 9, 2012
COMPLETE INDUSTRIAL, COMMERCIAL & INSTITUTIONAL
P.O. BOX 1067 MOORESVILLE, NORTH CAROLINA 28115 PHONE [phone]
Mr. T. Cooper James
TCJ Associates
PO Box 10325
Greensboro, NC 27404
To Those Concerned,
Brawley Construction intends to address the erosion and lack of maintenance on the retention pond located
behind the Dollar General in King, NC on Mountain View Road in the following manner:
A) The rip rap will be removed from the weir between the collection pond and the distribution pond.
B) The erosion of this dam will be graded and completed with impervious fabric to be placed below the rip
rap as the rip rap is replaced.
C) The distribution pond bank will be graded back more gently from the high water mark in order to
maintain constant and consistent grass slopes.
D) The disturbed areas will be seeded with 30% rye and 70% fescue and stabilization mats will be placed
on the slopes after seeding and fertilization.
E) All areas surrounding a 20' radius of the top shoulder of the pond will be over seeded with 30% rye and
70 % fescue and fertilized to help create a more stable area around the pond.
F) Maintenance will begin twice monthly at a minimum once this remediation work is complete.
Brawley Construction anticipates the scope work to be completed by March 1, 2012. Should there be questions
please contact Allen Brawley, 704-663-5270 or abrawleyna brawleXconstruction.cone.
Thank you for all consideration.
Sincerely,
Allen M. Brawley
Brawley Construction Company — President
AMB/anr

COLUMBIA DEVELOPMENT, LLC
November 9, 2011
RECEIVED
VIA EMAIL TRANSMISSION TO sue. homewood ricdenr.gov N.C.Devt. ofENR
Ms. Sue Homewood NOV 14 2011
North Carolina Division of Water Quality Winston-Salem
585 Waughtown Road LRe Iona; Office
Winston-Salem, NC 27107
REFERNECE: Stormwater Permit No. SW4080101
King Dollar General - Stokes County
Dear Sue:
In response to the letter we received from NCDENR dated September 30, 2011 regarding the above -
referenced pond we wanted to provide you with an up -date of our recent activities regarding the pond.
As noted in our letter to DENR of September 27", we contacted John Darden of Darden Engineering
Services and asked him to conduct a site inspection of the pond and review the design and construction
of' the pond. Mr. Darden performed the inspection on November 1, 2011 and advised us that the
construction of the pond was consistent with the approved drawings and that the water level was stable at
the current level. Additionally, he recommended we clean up the pond in general and clean up around
the catch basin at the end of the parking lot. Mr. Darden further advised us today that he had contacted
You with a proposal to allow the pond to function at the existing water level and plant additional plants
along the water line and was waiting for a response from DENR.
As you may recall, we sold this location in March 2010 but were unaware that the stormwater permit and
maintenance of the pond required transfer with the sale. As we are the current permit holder, Columbia
Development, LLC will be responsible for a Scope of Work when it is approved, but upon completion of
the agreed upon work the pond will be transferred to the current owner via the form you provided.
The DENR letter of September 30`t' requested a corrective action plan by November 15`t'. While the
above noted is not a formal plan, it is an outline of the actions that have taken place and a sound proposal
from Mr. Darden. We trust this shows good faith on our part to remedy the situation in a timely manner
to avoid any penalties. We look forward to DENR's response to Mr. Darden's proposal regarding the
pond.
Yours very truly,
COL,UMBIA DEVELOPMENT, LLC
"7f�
Betsy Broad
Operations Manager
cc: ' John Darden
Paul M. Dennis, Jr. Esq.
T. Coo'per Jades
Brawiev Construction Company
P. O. BOX 10325, GREENSBORO, NC 27404 [phone] FAX: [phone]

Homewood, Sue
From: Homewood, Sue
Sent: Thursday, November 10, 2011 9:35 AM
To: 'T. Cooper James & Associates'
Cc: John Darden; Paul Dennis; Allen Brawley; Patterson, Robert
Subject: RE: King DG Pond-Stormwater Permit SW4080101
Betsy,
Thank you for your prompt attention to this matter. I have been in contact with John Darden and he is currently
discussing some options with our stormwater engineer in Raleigh. I understand this may take some additional time. By
this email I am extending the deadline for submittal of a correction action plan until December 1, 2011. If the additional
time proves insufficient we can consider further extensions as we get closer to Dec. 1.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.
From: T. Cooper James & Associates[mailto:[e-mail]]
Sent: Wednesday, November 09, 2011 3:24 PM
To: Homewood, Sue
Cc: John Darden; Paul Dennis; Allen Brawley
Subject: King DG Pond-Stormwater Permit SW4080101
Sue: Please see the attached letter regarding the subject matter.
Thank you,
Betsy
T. Cooper James & Associates
P.O. Box 10325
Greensboro, NC 27404
336-855-5555 office
336-854-5316 fax

'a. Complete items 1, 2, and 3. Also complete
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Ms. Betsy Broad, Operations Mngr.
Columbia Development, LLC
3. Service Type
PO Box 10325
Greensboro, NC 27404
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NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
September 30, 2011
CERTIFIED MAIL 7010 2780 0001 4221 6511
RETURN RECEIPT REQUESTED
Betsy Broad, Operations Manager
Columbia Development LLC
PO Box 10325
Greensboro, NC 27404
Subject: Stormwater Permit No. SW4080101
Response to Inspection Report and Notice of Noncompliance
King Dollar General
Stokes County
Dear Ms. Broad:
The Division of Water Quality (Division) is in receipt of a Violation Response dated September 27, 2011.
You have indicated that you have contacted your engineering firm for assistance in evaluation of the wet
detention pond and development of a corrective action plan.
Please submit a detailed corrective action plan to bring the pond back into compliance with the approved plans
and specifications by November 15, 2011.
Thank you for your attention to this matter. This Office is still considering sending a Recommendation for
Enforcement to the Director of the Division of Water Quality regarding these issues and any future/continued
violations that may be encountered. Your above -mentioned response to this correspondence will be considered
in this process. This office requires that the violations, as detailed above, be abated immediately. These
violations and any future violations are subject to civil penalty assessment of up to $25,000.00 per clay for each
violation.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone]Customer Service: 1-877-623-6748
Internet: www.nmaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
None
rthCarohna
;Vaturall�

Columbia Development LLC
September 30, 2011
Page 2 of 2
Should you have any questions regarding these matters, please contact Sue Homewood at this office at 336-771-
4964 or [e-mail] or myself at 336-771-5000,
Sincerely,
Corey Basinger
Water Quality Regional Supervisor
Winston Salem Regional Office
cc: Wetlands, Buffers, Stormwater Compliance and Permitting Unit, NOV-2100-PC-0490
DWQ WSRO
4
■ Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
e Print your name and address on the reverse
so that we can return the card to you.
i ■ Attach this card to the back of the mailpiece,
or on the front if space permits.
i 1. Article Addressed to;
E Ms. Betsy Broad, Operations Mngr. t
1 Columbia Development, LLC
PO Box 10325
Greensboro, NC 27404
1 i°7012;,2783 3
PS Form 3811, February 2004
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❑ Registered
❑ Return Receipt for Merchandise
❑ Insured Mail
❑ C.O.D. y
4. Restricted Delivery? (Extra Fee) ❑ Yes
0014221 6436
Domestic Return Receipt 102595.02-M-1540 j

COLUMBIA DEVELOPMENT, LLC
September 27, 2011
VIA EMAIL TRANSMISSION TO sue.homewood(@ncdenr.gov
Ms. Sue Homewood
North Carolina Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
REFERENCE: Stormwater Permit No. SW4080101
King Dollar General
Stokes County
Dear Sue:
Thank you for speaking with me last week regarding the deficiencies of the above
referenced pond. As we discussed, unfortunately we sold this property last year and
were unaware of the necessity to request a transfer of ownership and appreciate you
providing the form for this transaction.
As a status report....we contacted Darden Engineering, which is the engineering firm that
designed the pond, and requested their assistance in determining why the water level is
below the specified amount. Once we have their findings, we intend to contact the new
owner to discuss the transfer of ownership and the situation with the pond.
We will keep you appraised of our activities.
Yours very truly,
COLUMBIA DEVELOPMENT, LLC
16tp� -
Betsy Broad
Operations Manager
cc: T. Cooper James
Paul M. Dennis, Esq.
P. O. BOX 10325, GREENSBORO, NC 27404 [phone] FAX: [phone]

Homewood, Sue
From: Homewood, Sue
Sent: Thursday, September 15, 2011 11:40 AM
To: '[e-mail]'
Subject: State Stormwater Permitting information
Betsy,
Attached is a scan of the Stormwater Permit issued to the King Dollar General and the Notarized Operation and
Maintenance Form for your review.
Here is a link to the Change of Ownership Form:
http://portal.ncdenr.org/web/wq/ws/su/statesw/forms dots
Please feel free to contact me with any other questions you have.
Sue Homewood
NC DENR Winston-Salem Regional Office
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
FAX: [phone]
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.

To
(
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
September 2, 2011
CERTIFIED MAIL 7010 2780 0001 4221 6214
RETURN RECEIPT REQUESTED
Mr. T. Cooper James
Columbia Development LLC
PO Box 10325
Greensboro, NC 27404
Subject: Stormwater Permit No. SW4080101
Inspection Report and Notice of Noncompliance
King Dollar General
Stokes County
Dear Mr. James:
On September 5, 2008 the Division of Water Quality (Division) issued a High Density Commercial Property Stormwater
Permit for the Dollar General of King in King, NC in Stokes County. On August 24, 2011, Sue Homewood from this
Division conducted a routine inspection of the approved Wet Detention Basin. The following items were noted during
their inspection and a subsequent file review:
Condition II.3 of Permit No. SW4090903 requires that "the permittee shall at all time provide the operation and
maintenance necessary to assure the permitted stormwater system functions at optimum efficiency." The
following maintenance problems were noted during the inspection:
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 565 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-677-623-6746
Internet: www.ncwaterquality.org
Nne
orthCarolina
;Vatu dy
An Equal Opportunity 1 Affirmative Action Employer

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Mr. James
September 2, 2011
Page 3 of 3
Thank you for your attention to this maiter. This Office is considering sending a recommendation for enforcement to the
Director of the Division of Water Quality regarding these issues and any future/continued violations that may be
encountered. This office requires that the violations, as detailed above, be abated immediately and properly
resolved. Environmental damage and/or failure to secure proper authorizations have been documented on the subject
tract as stated above. Your efforts to undertake activities to bring the subject site back into compliance is not an
admission, rather it is an action that must be taken in order to begin to solve ongoing environmental issues.
Pursuant to G.S. 143-215.6A, these violations and any future violations are subject to a civil penalty assessment of
up to a maximum of $25,000.00 per day for each violation. Your above -mentioned response to this correspondence,
the degree and extent of harm to the environment and the duration and gravity of the violation(s) will be considered in
any civil penalty assessment process that may occur. Should you have any questions regarding these matters, please
contact Sue Homewood at this office at 336-771-4964 or sue.homewood(@ncdenr.gov or myself at 336-771-5000.
Sincerely,
W. Corey Basinger
Water Quality Regional Supervisor
Winston Salem Regional Office
cc: Wetlands, Buffers, Stormwater Compliance and Permitting Unit, NOV-2100-PC-0490
DWQ WSRO -- —
e Complete items 1, 2, and 3. Also complete
i item 4 if Restricted Delivery Is desired.
■ Print your name and address on the reverse
] so that we can return the card to you.
■ Attach this card to the back of the mailpiece,
j or on the front if space permits.
1. Article Addressed to:
I
Mr. T. Cooper James
Columbia Development, LLC
PO Box 10325
Greensboro, NC 27404
� C
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7010 2780
0001 4221 6214
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❑ Registered ❑ pt for Merchandise
❑ Insured Mall ❑ C.O.D.
4. Restricted Delivery? (Extra Fee) ❑ Y85
PS Form 3811, February 2004 Domestic Return Receipt
VV
242 Mom }
102595-02-M-1540

State Stormwater Permit
Permit No.SW4080101
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carofina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
T. Cooper James 1 COLUMBIA DEVELOPMENT, LLC
Dollar General
Mountain View Road, King, Stokes County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until September 4, 2018, and
shall be subject to the following specified conditions and limitations:
1. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application. and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in. Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 43,560 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans. This includes the attached recorded deed agreement dated
June 25, 2008, between COLUMBIA DEVELOPMENT, LLC and BBID
Properties, LLC for the part of the wet pond located on BBID's property.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 1 of 6.

State Stormwater Permit
Permit No.SW4080101
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, ayes: 2.07. -
Onsite, ft : 314,175
Offsite, ftz: 0
b. Total Impervious Surfaces, ft 2:
Buildings ft :
Roads/Parking, ft2:
Other, ft2.
Offsite, ft�:.
c. Pond,Depth, feet:
d. TSS removal efficiency:
e. Design Storm:
f. Permanent:Pool Elevation,'..FMS .
g. Permitted Surface Area @PP ft
h. Permitted Storage Volume, ftl:
1. Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permanent Pool Volume, ft3.:
I, Forebay Volume, ft3.
M. Receiving Stream/River Basin:
n. Stream Index Number:
o. Classification of Water Body:
43,560-
9,147
19,167
0
15,246 (offsite roadway)
3.0 .'
90%
1.0 inch
476.50
4,230
3,908 at temporary pool
477.20
1.0.' 0 pipe
12,603
2,404
Muddy Creek I Yadkin Pee -Dee
12-94-(0.5)
1,C,1
II. SCHEDULE OF COMPLIANCE
1. The stdrmwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired Immediately.'
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the, permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must'occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded: areas.
e. Maintenance of all slopes in accordance with approved .plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be -kept and made available upon
request to authorized personnel -of ❑WQ. The records will indicate the date,
activity,.name of person performing the work and what�actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
Page 2 of 6

State Stormwater Permit
Permit No.SW4080101
the conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion Of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans. and
specifications, and other supporting documentation. Any deviations from the .
approved plans and specifications must be noted on the Certification. A
modification may be -required for those deviations.
7. if the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all -times.,
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification.to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on -the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be'rnaintained on file by
the permittee for a.minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more. of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements: The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
Ill. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change; the permittee must
submit a completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is,responsible for compliance with all permit conditions until such
Page 3 of 6

State Stormwater Permit
Permit No.SW4080101
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division .of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the'Permittee from complying with
any and -all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilitie's fail -to perform satisfactorily, including the creation
of nuisance conditions; the Permittee shall take immediate corrective action,
including those -as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue �in. force and effect until revoked or terminated.
The permit may be modified; revoked and reissued or terminated for cause. The
filing of a request'for a permit modification, revocation and re -issuance or
termination does not stay any permit, condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established. in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10.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 Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11.The permittee shall notify the Division of -any name,- ownership or mailing.
address changes at least 30 days prior to making such changes.
Permit issued this the 51" day of September 2008.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Co en H. SLIllins, Director
Division of Water.Quality
By Authority of the Environmental Management Commission
Page' 4 of 6

RECEIVED
N.C. Dent of ENR
MAR Q 6 2W9
Winston-Salem
King, Dollar General R"lonal Office
Stormwater Permit No. SW4080101
Stokes County
Designer's Certification
State Stormwater Permit
Permit No.SW4080101
I', Uo rckv�_ , as a duly registered e H tt t N �=-_ V_
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
Polio Y- eAc v-a_ -- ( —
(Project).
�z,r J awes
for __ Gp I Lkvv-,b'i c� i;?,_jdo�meKi-, LL( (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date 3 4 - 0 9
6001 0>A
Page-5 of 6

State Stormwater Permit
Permit No.SW4080101
Certification Requirements:
The drainage area to the system contains approximately the permitted
acreage.
t--�2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
,-'3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
`. All roof drains are located such that the runoff is directed into the system. .
5. The outlet/bypass structure elevations are per the approved plan.
r/6. The outlet structure is located per the approved plans.
v5: Trash rack is provided on the outlet/bypass structure.
=--'8: All slopes are grassed with permanent vegetation.
Vegetated slopes are no. steeper than 3:1.
The inlets are located per the approved plans and do not cause shot -
circuiting of the system.,
e/11. The permitted amounts of surface area and/or volume have been
provided.
c/12. Required drawdown devices are -correctly sized per -the approved.plans.
&,-13. All required design depths are provided.
✓14. All required parts -of the system are provided, such as a vegetated shelf,
and a forebay.-
�5. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Wintson-Salem Regional Office
Surface Water Protection
585 Waughtown Street
Winston-Salem, -NC 27107
Cc: DWQ Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Page 6of6

r
Permit Number: Sivgo�-me G C
(to be provided by DWQ)
Drainage Area Number: 1
Wet Detention Basin Inspection and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay. .
Important maintenance procedures:
-- Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
- No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
- - - - - Stable-groundcover slfddld be maintained in'the drainage area to reduce -the-
sediment load to the wet detention basin.
- If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of inspection and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debfis.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
ro
a ximatel six inches.
Form SW401-Wet Detention Basin I&M-Rev.2

Permit Number: SCi✓HCS't=f of
(to be provided by DWQ)
Drainage Area Number: 1
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swaIe
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
•
turf matting or riprap to avoid
future i2roblems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
-
— --- -
reventfutureerosion ioblenis.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optdhal plant - -
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessa
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW40I-Wet Detention Basin I&M-Rev.2

Permit Number: 5W'J05'01G
(to be provided by DWQ)
Drainage Area Number: 1
BMP element: -
Potential roblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs,
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or re lace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
--accumulated sediments. -
When the permanent pool depth reads _ 7' feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 25 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 476.5
Sediment Removal 474.5' /PemanenPool------------olume Sediment Removal Elevation 4fi9. 5 VolumeBottom Elevatio-41 Min. -------------------------------------------- L1_
-
ediment Bottom Elevation 46a • 5' n.
Storage Sediment
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin I&M-Rev.2

PeRit,Number: S k/q UK-0 i C ,
(lobe provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures Iisted above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name. Doll r General, King, NC
BMP drainage area number:
Pri C name • C-• ES
:Title:_ -MAN c,�F-R C0L.yfw81A PEQF- LoPn+saT L.LC
es — — Po Boy_ �G3a5 �CZ�� roc 2��oy
ss -sass
_..__.. ___...-e-l.r_. —_.—esp— _.------.. -y—s __ ._.`.___.—..__ __.._—e __.._...__— --__._
ote:. The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president...___
I, �-�n ; .�r PO-�'Gt 1� , a Notary Public for the State of
-- `T No.F: � 6>,r'o")iylus­ County of--Cru i-1 t-brc _ )do hefeby ceriify t}iat—._.-
C . e S personally appeared before me this
day of ::�L) OF, and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
�r►rrrr►rrrrrrrrrrrrr►rrrrrrrrrr
JENNIFER PARHAM S
NOTARY PUBLIC
* GUILFORD COUNTY NC
�wrrr♦rxrr♦{*rrr►rrrrr
rrr+rrrwry
SEAL
My commission expires
Form SW401-Wet Detention Basin I&M-Rev.2

COLUMBIA DEVELOPMENT, LLC
RECEiveo
N.C. De:!. pf ENR
January 2$, 2009
JAN292W
W-n$ton•g*lein
Regicnll Q+!c,
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Mr. Steve W. Tedder
Water Quality Regional Supervisor
Winston-Salem Region
Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Re: King Dollar General — Stokes County
Permit #:SW4080101
High Density Commercial Wet Pond Project
Dear Mr. Tedder:
Please see the enclosed notarized letter on behalf of Columbia Development, as written by
Brawley Construction Company. Please note that we have contracted Brawley
Construction Company in order to expedite the completion of this water pond project at the
Dollar General location in King, North Carolina. We will continue to make every possible
effort in order to complete this project in a timely fashion, as outlined in your letter to us
dated 15 January 2008 (sic) and mailed to us on January 21, 2009 (accordingly, we only
received this letter on January 22, 2009). To this end please note that Mr. Brawley is in
contact with Ron Boone and will work directly with Mr. Boone in order to complete this
project and provide an engineer certification.
Thank you and please feel free to contact either our office or Allen Brawley of Brawley
Construction Company if you have any additional concerns or questions regarding this
matter.
Yours Very Truly,
l'om C. James, anger
TCJ Jer
Enclosure
CC: Allen Brawley
P. O. BOX 10325, GREENSBORO, NC 27404 [phone] FAX: [phone]

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Restricted Delivery Fee
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: &MPL&TE THIS SECTION' COMPLETE THIS SECTION ON DELIVERY
■ Comple4ifems 1, 2, and 3. Also complete Zature
item'4 if Restricted Delivery is desired. ❑ Agent
■ Print your name and address on the reverse ❑ Addressee
so that we can return the card to you. Receiv by(Printe Name) C. o e of Delivery i
■ Attach this card to the back of the mailpiece,
or on the front if space permits, ° _
D. Is delivery address different from item 1? ❑ Yes :.
t. Article Addressed to: -
If YES enter deliveryadl?.roes below: ❑ No
VklMr. T. Cooper"James, Manager J
COW rn
' bia Development, LLC w 22
PO Box 10325 s. S rviceType
Greensboro, NC 27404certified Mail Tess
I Registered ties
❑ Insured Mail ❑ C.O.D.
i 4. Restricted DeFivery7 (Extra Fee)
2,, Article Number_
?, 006:015,0, 0002 -787.6 i8799 ;
P�; orm a ruary 2004 Domestic Return Receipt
3 �
for Merchandise
❑ Yes
1 O&Fjr 540

�R A' wI F{-
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�rRuCT%o� BRAWLEY CONSTRUCTION CO. COMPLETE INDUSTRIAL, COMMERCIAL& INSTITUTIONAL
P.O. BOX 1067 MOORESVILLE, NORTH CAROLINA 28115 PHONE [phone]
January 26, 2009
Columbia Development, Inc.
Mr. T. Cooper James
PO Box 10325
Greensboro, NC 27404
Re: Division Water Quality
Dear Cooper,
Brawley Construction Company was contacted by Columbia on or about January
19, 2009 and requested to aid in expediting the completion of the retention pond on
Dollar General site at King, NC. Although Brawley had no prior duties under the
contracting of this pond, Brawley agreed to become involved.
On January 20, 2009 the site was reviewed by Brawley to see what scope of work
had as of yet to be completed. On January 20, 2009 Brawley attempted to contact Bradley
Benett of DWQ. The morning of January 21, 2009 Columbia received from DWQ a
letter of noncompliance. Brawley was contacted at this time to attempt to bring this site
under compliance quickly.
Since becoming involved Brawley has found that the mass grading of the site and
placement of inlets, outfalls and spillways have been completed and are being surveyed
January 26, 2009 for accuracy.
Brawley began on January 26, 2009 to proceed with the seeding and matting of
the areas not requiring aquatic plantings. This portion of the project should, barring rain,
be completed by Wednesday January 28, 2009.

-2-
Brawley has also contacted a supplier for the organic soil to be placed on the shelf
in the wet pond. Also contacted was an aquatic supplier to supply and place the plantings
for the wet area of the pond.
Brawley feels that with normal weather conditions allowing work to proceed this
can be accomplished on or before February 20, 2009.
Brawley will maintain contact with Mr. Boone of the DWQ to apprise DWQ as to
what progress is being made concerning this project. It is worth noting that Brawley
intends to have the engineers certification by February 20, 2009 and if needed Mr.
Boone's review.
If further explanation is needed please contact Allen Brawley at 704-663-5270.
Columbia Devel f
ment, Inc.
This must be notorized.
�M NOTARY PUBLIC
FYI Q OFFICIAL SEAL
ANGELA V. TANNER
t GUILFORD COUN Y, NC-v
My Commission Expires �G%�
Sincerely,
Allen M. Brawley
President
AMBlpjj
ACo nstructionn Co.

_ qio
oF w A rFgQ�
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
7008-0150-0002-7876-8799
Columbia Development, LLC
Attn: Mr. T. Cooper James, Manager
P.O. Box 10325
Greensboro, NC 27404
Beverly Eaves Purdue, Governor
Dee Freeman, Secretary
North Carolina Department of Environment and Natural Resources
15 January 2008
Subject: Compliance Evaluation Inspection
Notice of Violation with Intent to Enforce:
Permittee: Columbia Development, LLC
Facility: King, Dollar General
Permit #: SW4080101
High Density Commercial Wet Pond Project
Stokes County
Dear Mr. James:
NOV-2009-PC-0026
Coieen H. Sullins, Director
Division of Water Quality
MB
Mr. Ron Boone and Mr. Corey Basinger, of the Winston-Salem Regional Office of the NC
Division of Water Quality (DWQ or the Division), conducted a compliance evaluation inspection
(CEI) of the King Dollar General project site on 13 January 2009. This inspection was
conducted to determine your compliance status with the high density State stormwater
management permit, SW4080101, issued to you on 5 September 2008, for the management of
stormwater runoff from the site.
2. The project site is located approximately 114 mile southwest of the intersection of Mountain View
Road and NC Hwy 66, in King, Stokes County, North Carolina. Stormwater from the site drains
to Muddy Creek, which is currently .classified as a Class C water in the Yadkin -Pee Dee river
basin. Findings from the inspection are summarized below as well as in the attached inspection
checklist. You should maintain both this letter and the inspection checklist in your project file
records.
Site/System Review
3. It must first be noted that an earlier DWO site inspection revealed that both the building and
parking lot had already been constructed prior to issuance of the required high density State
Stormwater permit, . in violation of NC General Statute 143-214.7 and Session Law 2006-
246/Senate Bill 1566, which require that said permit be issued prior to the installation or
construction of any impervious surfaces on the site. As a result, DWQ issued to you Notice of
Violation NOV-2008-CV-0013, dated 13 August 2008, for failure to obtain the required high
density State Stormwater permit.
4. Moreover, the cover letter attached to the permit issued to you on 5 September 2009, also
included a stipulation that the approved stormwater control measures for the site be completed
North Carolina Division of Water Quality Winston-Salem Regional Office
Customer Service: 1-877-623-6748 Surface Water Protection Section
Internet: www.ncwaterquality.org 585 Waughtown Steet, Winston-Salem, NC 27107
N°;Ili arolina
��iaffrrrr!!�
Ph: [phone]
Fax:[phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper

%Ar. T. Cooper James
Permit #: SW4080101, King Dollar General
NOV #: NOV-2009-PC-0026
Page 2 of 2
within 120 days of the effective date of the permit, or no later than 5 January 2009. Yet, the CEI
conducted at the site on 13 January, revealed that the control measures are still incomplete and
stormwater runoff is currently being diverted directly to an unnamed tributary of Muddy Creek
through corrugated black plastic pipe approximately 24" in diameter.
VIOLATIONS
5. As a result of the above inspection findings, you are currently in violation of NC General Statute
143-214.7, Session Law 2006-2461Senate Bill 1566 and the SW4080101 permit, by not having
completed construction of the approved stormwater control measures prior to the
installation/construction of the building and parking lot at the site. You have further violated the
conditions of the permit cover letter, by not having completed construction of the approved
stormwater control measures within 120 days of permit issuance (5 January 2009).
REQUIRED RESPONSE
6. You must reply in writing to this Notice of Violation/Notice of Intent to Enforce (NOWNOI) within
15 days of receiving it. Your reply must include a corrective action plan with implementation
schedule to correct the above -mentioned violation(s). Please be aware that this office is
considering sending a recommendation for enforcement to the Director of the Division of Water
Quality for the violation(s) listed above. In accordance with NC General Statute 143-215.6A,
this/these violation(s) are subject to civil penalty assessments not to exceed $25,000 per day,
per violation. Your written response and the actions that you take to address the violation(s)
listed herein will be considered in deciding whether or not such penalties are necessary to
compel compliance.
7. If you have any questions regarding the inspection or this NOWNOI, please give Mr. Boone or
me a call at [phone]. Thank you for your cooperation in this matter.
Sincerely,
Steve W. Tedder
Water Quality Regional Supervisor
Winston-Salem Region
Division of Water Quality
Attachments:
Inspection Checklist
CC: WSRO - SWP
Central Files wl attachments
Stormwater Permitting Unit wl attachments
Nonpoint Source Assistance and Compliance Oversight Unit wl attachments

North Carolina Departrne `
Environment and Natural
585 Waughtown Street �- Winston-Salem, NC 27107-2241
WATER QUALI , e?008 01150 0002 7876 8799
Return zecelpt Requested
Mr. T. Cooper James, Manager
Columbia Development, LLC
PO Box 10325
Greensboro, NC 27404
L: i I : -4.0 'ice i,1'�d •'"� *.�
OL030Ni 637 .;AEI 21 2009
MAILED 71P C.r}1IE 27; 07
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CERTIFIED MAIL
RETURN RECEIPT REQUESTED
7008-0150-0002-7876-8799
Columbia Development, LLC
Attn: Mr. T. Cooper James, Manager
P.O. Box 10325
Greensboro, NC 27404
Beverly Eaves Purdue, Governor
Dee Freeman, Secretary
North Carolina Department of Environment and Natural Resources
15 January 2008
Subject: Compliance Evaluation Inspection
Notice of Violation with Intent to Enforce:
Permittee: Columbia Development, LLC
Facility: King, Dollar General
Permit##: SW4080101
High Density Commercial Wet Pond Project
Stokes County
Dear Mr. James:
NOV-2009-PC-0026
Coleen H. Sullins, Director
Division of Water Quality
Mr. Ron Boone and Mr. Corey Basinger, of the Winston-Salem Regional Office of the NC
Division of Water Quality (DWQ or the Division), conducted a compliance evaluation inspection
(CEI) of the King Dollar General project site on 13 January 2009. This inspection was
conducted to determine your compliance status with the high density State stormwater
management permit, SW4080101, issued to you on 5 September 2008, for the management of
stormwater runoff from the site.
2. The project site is located approximately 1/4 mile southwest of the intersection of Mountain View
Road and NC Hwy 66, in King, Stokes County, North Carolina. Stormwater from the site drains
to Muddy Creek, which is currently classified as a Class C water in the Yadkin -Pee Dee river
basin. Findings from the inspection are summarized below as well as in the attached inspection
checklist. You should maintain both this letter and the inspection checklist in your project file
records.
Site/System Review
3. It must first be noted that an earlier DWQ site inspection revealed that both the building and
parking lot had already been constructed prior to issuance of the required high density State
Stormwater permit, . in violation of NC General Statute 143-214.7 and Session Law 2006-
2461Senate Bill 1566, which require that said permit be issued prior to the installation or
construction of any impervious surfaces on the site. As a result, DWQ issued to you Notice of
Violation NOV-2008-CV-0013, dated 13 August 2008, for failure to obtain the required high
density State Stormwater permit.
4. Moreover, the cover letter attached to the permit issued to you on 5 September 2009, also
included a stipulation that the approved stormwater control measures for the site be completed
One
t arotina
✓lfntrrrrrlly
North Carolina Division of Water Quality Winston-Salem Regional Office Ph: [phone]
Customer Service: 1-877-623-6748 Surface Water Protection Section Fax: [phone]
Internet: www.ncwaterquality,org 585 Waughtown Steet, Winston-Salem, NC 27107
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper

Mr. T. Cooper James
Permit #: SW4080101, King Dollar General
NOV #: NOV-2009-PC-0026
Page 2 of 2
within 120 days of the effective date of the permit, or no later than 5 January 2009. Yet, the CEI
conducted at the site on 13 January, revealed that the control measures are still incomplete and
stormwater runoff is currently being diverted directly to an unnamed tributary of Muddy Creek
through corrugated black plastic pipe approximately 24" in diameter.
VIOLATIONS
5. As a result of the above inspection findings, you are currently in violation of NC General Statute
143-214.7, Session Law 2006-2461Senate Bill 1566 and the SW4080101 permit, by not having
completed construction of the approved stormwater control measures prior to the
installation/construction of the building and parking lot at the site. You have further violated the
conditions of the permit cover letter, by not having completed construction of the approved
stormwater control measures within 120 days of permit issuance (5 January 2009).
REQUIRED RESPONSE
6. You must reply in writing to this Notice of Violation/Notice of Intent to Enforce (NOVINOI) within
15 days of receiving it. Your reply must include a corrective action plan with implementation
schedule to correct the above -mentioned violation(s). Please be aware that this office is
considering sending a recommendation for enforcement to the Director of the Division of Water
Quality for the violation(s) listed above. In accordance with NC General Statute 143-215.6A,
this/these violation(s) are subject to civil penalty assessments not to exceed $25,000 per day,
per violation. Your written response and the actions that you take to address the violation(s)
listed herein will be considered in deciding whether or not such penalties are necessary to
compel compliance.
7. If you have any questions regarding the inspection or this NOVINOI, please give Mr. Boone or
me a call at [phone]. Thank you for your cooperation in this matter.
Sincerely,
Steve W. Tedder
Water Quality Regional Supervisor
Winston-Salem Region
Division of Water Quality
Attachments:
Inspection Checklist
CC: WSRO - SWP
Central Files wl attachments
Stormwater Permitting Unit wl attachments
Nonpoint Source Assistance and Compliance Oversight Unit wl attachments
V

Compliance Inspection Report
Permit: SW4080101 Effective: 09/05/08 Expiration: 09/04/18 Owner: Columbia Development LLC
Project: King Dollar General
County: Stokes Mountain View Rd
Region: Winston-Salem
King NC 27021
Contact Person: Jason Layne Title: Phone: [phone]
Directions to Project:
Highway 52 North of Winston-Salem to exit 122 (Moore -RJR Drive). Left on Moore -RJR Dr. Go approx. 4 miles and site is on right just
before NC 66.
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas: 001 - (Muddy Creek) (03-07-04 ) ( C)
On -Site Representative(s):
Related Permits:
Inspection Date: 01112/2009 Entry Time: 08:00 AM
Primary Inspector: Ron Boone
Secondary lnspector(s):
William C Basinger
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ® Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
Exit Time: 09:00 AM
Phone: [phone]
Ext.2202
Phone:
Inspection Type: Compliance Evaluation
Page: 1

Permit: SW4080101 Owner - Project: Columbia Development LI_C
Inspection Date: 01/12/2009 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
File Review
Is the permit active?
Signed copy of the Engineer's certification is in the file?
Signed copy of the Operation & Maintenance Agreement is in the file?
Copy of the recorded deed restrictions is in the file?
Comment: . WD pond is not yet completed.
Built Upon Area
Is the site BUA constructed as per the permit and approval plans?
Is the drainage area as per the permit and approved plans?
Is the BUA (as permitted) graded such that the runoff drains to the system?
Comment: WD pond is not yet completed.
SW Measures
Are the SW measures constructed as per the approved plans?
Are the inlets located per the approved plans?
Are the outlet structures located per the approved plans?
Comment: WD pond is not yet completed. The main sedimentation chamber of the
pond is constructed with the baffles and outlet structure, but the forebay and inlets, as
well as the emergency spillway have not been completed. All site drainage is currently
being diverted directly to the stream via a 24" black plastic corrugated pipe.
Yes No NA NE
■nnn
n■nn
■ ❑ ❑ ❑
■Linn
Yes No NA NE
■nnn
■nnn
■ ❑ ❑ ❑
Operation and Maintenance Yes, No NA NE
Are the SW measures being maintained and operated as per the permit requirements? ❑. ❑ ■ ❑
Are the SW BMP inspection and maintenance records complete and available for review or provided to DWQ ❑ ❑ ■ ❑
upon request?
Comment: WD pond is not yet completed.
Other Permit Conditions Yes No NA NE
Is the site compliant with other conditions of the permit? ❑ n ❑ ❑
Comment: Building and parking lot construction is completed but WD pond is not.
Other WQ Issues Yes No NA NE
Is the site compliant with other water quality issues as noted during the inspection? ■ n n n
Comment:
Page: 2

pold
. ., C W A rFg
otpG
o -c
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
September 5, 2008
Mr. T. Cooper James
COLUMBIA DEVELOPMENT, LLC
PO Box 10325
Greensboro, NC 27404
Subject: Stormwater Permit No. SW4080101
King, Dollar General
High Density Commercial Wet Pond Project
Stokes County
Dear Mr..James:
Coleen H, Sullins, Director
Division of Water Quality
RECEIVED
WC, Dept. of ENR
SEP 0 9 2008
Winston-Salem
Regional Office
The Stormwater Permitting Unit received a complete Stormwater Management Permit
Application for King, Dollar General on September 4, 2008. Staff review of the plans
and specifications has determined that the project, as proposed, will comply with the
Stormwater Regulations set forth in Title 15A NCAC 2H.1000 and Session Law 2006-
246. We are forwarding Permit No. SW4080101, dated September 5, 2008, for the
construction of the subject project.
This permit shall be effective from the date of issuance until September 4, 2018, and
shall be subject to the conditions and limitations as specified therein. Please pay
special attention to the Operation and Maintenance requirements in this permit. Failure
to establish an adequate system for inspection and maintenance of the stormwater
management system will result in future compliance problems.
As per the Notice of Violation (NOV) sent to you and sign for on August 14, 2008,
you are required to respond b approved stormwater
control measures must be instaTed within 120 days of the ective date of this permit.
If any parts, requirements, . . ine in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within sixty (60)
days following receipt of this permit. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and binding.
This project will be kept on file at the Winston-Salem Regional Office. If you have any
questions, or need additional information concerning this matter, please contact Robert
Patterson at [phone], or [e-mail].
Sincerely, .
for Coleen H. Sullins No�thcarol;n t
�I7rttrrra!!J
Wetlands and Stormwater Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet-. Internet. h2o.enr.state.nc.us Location: 512 N. Salisbury St. _ Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50°% Recycled/l0°% Post Consumer Paper

Mr. T. Cooper James ,
SW408010 t —King Dollar General
September 5, 2008
cc: Winston-Salem Regional Office — Steve Tedder
DWQ NPS-ACO Unit —John Hennessy
Central Files
SPU Files
Page 2 of 2

State Stormwater Permit
Permit No.SW4080101
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
T.- Cooper James 1 COLUMBIA DEVELOPMENT, LLC
Dollar General
Mountain View Road, King, Stokes County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 and S.L. 2006-246 (hereafter referred to as the
"stormwater rules") and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until September 4, 2018, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 43,560 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area -indicated on page 3 of
this permit, and per approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans. This includes the attached recorded deed agreement dated
June 25, 2008, between COLUMBIA DEVELOPMENT, LLC and BBID
Properties, LLC for the, part of the wet pond located on BBID's property.
5.. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 1 of 6

State Stormwater Permit
Permit No.SW4080101
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, ages: 2.07
Onsite, ft : 314,175
Offsite, ft2: 0
0
Total Impervioys Surfaces, ft2:
Buildings ft :
Roads/Parking, ft2:
Other, ft2.
Offsite, ftt:
Pond Depth, feet:
TSS removal efficiency:
Design Storm:
Permanent Pool Elevation, FMSj :
Permitted Surface Area @PP ft
Permitted Storage Volume, W.,
Storage Elevation, FMSL:
Controlling Orifice:
Permanent Pool Volume, ft3
Forebay Volume, ft3:
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
43,560
9,147
19,167
.0
15,246 (offsite roadway)
3.0
90%
1.0 inch
476.50
4,230
3,908 at temporary pool
477.20
1.0"0 pipe
12,603
2,404
Muddy Creek 1 Yadkin Pee -Dee
12-94-(0.5)
1.C„
II. SCHEDULE OF COMPLIANCE
10 The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The'permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal. I
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
Page 2 of 6

State Stormwater Permit
Permit No.SW4080101
the conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received a proval'for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d... Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Mayor permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
lll. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. The approval of this request will be considered on its merits and may or
may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
Page 3 of 6

State Stormwater Permit
Permit No.SW4080101
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit -may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10.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 Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11.The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
Permit issued this the 51h day of September 2008.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
Page 4 of 6

State Stormwater Permit
Permit No.SW4080101
King, Dollar General
- Stormwater Permit No. SW4080101
Stokes County
Designer's Certification
as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 5 of 6

State Stormwater Permit
Permit No.SW4080101
0
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
_8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
.10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
.11. The permitted amounts of surface area and/or volume have been
provided.
_12. Required drawdown devices are correctly sized per the approved plans.
.13. All required design depths are provided.
.14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
_15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: Wintson-Salem Regional Office
Surface Water Protection
585 Waughtown Street
Winston-Salem, NC 27107
Cc: DWQ Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Page 6 of 6

r t
A7,1,;,A,
NCDENR
North Carolina Department of Environment and Natura
Division of Land Resources
James D. Simons, PG, PE Land Quality Section
Director and State Geologist
October 3, 2008
1,�
Resources
LETTER OF APPROVAL `VITH 1VIODIFICATIONS
Brawley Construction Company
Attn: Allen M. Brawley
PO Box 1067
Mooresville, NC 28115
RE: Project Name: King, Dollar General (revised)
Project ID: Stake-2008-010
County: Stokes
River Basin: Yadkin
Stream Classification: Other
Submitted By: Darden Engineering Services
Date Received by LQS: 10-2-08
Plan Type: Revised
Dear Mr. Brawley:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
This office has reviewed the subject erosion and sedimentation control plan. We find the
plan to be acceptable with modifications and hereby issue this letter of Approval With
Modifications. The Modifications Required for Approval are listed on the attached page. This
plan approval shall expire three (3) years following the date of approval, if no land -disturbing
activity has been undertaken, as is required by Title 15A NCAC 4B .0129.
Please be advised that Title 15A NCAC 4B .0118(a) requires that a copy of the approved
erosion control plan be on file at the job site. Also, you should consider this letter to give the
Notice required by G.S. II3A-61.1(a) of our right of periodic inspection to insure compliance
with the approved plan.
North Carolina's Sedimentation Pollution Control Program is performance -oriented,
requiring protection of existing natural resources and adjoining properties. If, following the
commencement of this project, it is determined that the erosion and sedimentation control plan is
inadequate to meet the requirements of the Sedimentation Pollution Control Act of 1973 (l\Torth
Carolina General Statute 113A-51 through 66), this office may require revisions to the plan and
implementation of the revisions to insure compliance with the Act.
Winston-Salem Regional Office
585 Waughtown Street, Winston-Salem, North Carolina 27107 - Phone: [phone] FAX: [phone]

Letter of Approval with Modifications
Brawley Construction Company
October 3, 2008
Page 2 of 3
f , ` 3
Acceptance and approval of this plan is conditioned upon your compliance with Federal
and State water quality laws, regulations, and rules. In addition, local city or county ordinances
or rules may also apply to this land -disturbing activity. This approval does not supersede any
other permit or approval.
Please be aware that your project will be covered by the enclosed NPDES General
Stormwater Permit NCGO1000 (Construction Activities). You should first become familiar with
all of the requirements for compliance with the enclosed general permit.
Please note that this approval is based in part on the accuracy of the information provided
in the Financial Responsibility Form, which you have provided. You are requested to file an
amended form if there is any change in the information included on the form. In addition, it
would be helpful if you notify this office of the proposed starting date for this project. Please
notify us if you plan to have a preconstruction conference.
Your cooperation is appreciated.
Sincerely,
Clif Whitfield, P.G. ,
Assistant Regional Engineer
Land Quality Section
Enclosures: Certificate of Approval
Modifications Required for Approval
NPDES Permit
cc: Darden Engineering Services
WSRO Files
WSRO DWQ

Letter:• of Approval with Modifications
Brawley Construction Company
October 3, 2008
Page 3 of 3
MODIFICATIONS REQUIRED FOR APPROVAL
Project Name: King, Dollar General (revised)
Project 1D: Stoke-2008-010
County: Stokes
1. The embankments of -the stormwater detention pond should either be provided with erosion
control matting or silt fence must be placed below the embankments (do not block barrel
outflow). Also, a copy of this modification should be given to the grading contractor.

The posting of this certificate certifies ;that an erosion and' sedimentation control plan
has been approved: for this project by the North Carolina .Department of Environment '.
and Natural Resources ' in accordance with North Carolina .General Statute 113A - 57 (4) and
113A - 54. (d) (4) •and North Carolina Administrative .Code, 'Title 45A, -Chapter :4B.0107 (c).
This certificate must be posted at 'the primary entrance of the job site. before construction
begins and until establishment of . permanen`t groundcover as � required by North. -:Carolina:
Administrative Code, Title 15A, Chapter.4B.0127 (b). ' -<`
KI lee P/
Date of Plan Approval
.:Project Name and Location
io Ilk.• s
.Regional ngine I k437er
• � � � ®EAR: •• � - -
r

POST OFFICE I3OX 5 50
JEFFE11SON SQUARE, SUITE A
153 JEFFERSON CHURCH ROAD
KING, NORTH CAROLINA 2 7021
LAw OFF=cEs
J. TYAONE B$OWDER
PROFESSIONAL ASSOCIATION
ATTORNEY.ANA COUNSELLOR AT LAw
August 29, 2008
Robert D. Patterson, PE
Environmental Engineer
NCDENR / DWQ / Stormwater Permitting Unit
512 N. Salisbury Street
Raleigh, NC 27604
Re: Agreement between BBID Properties, LLC
and Columbia Development, LLC
(regarding wet detention pond)
Dear Mr. Patterson:
TELEPHONE [phone]
(336) 983-GO84
TELEFA.X (33G) 983-834I
E-mail: [e-mail]
Enclosed herewith is the original of the above referenced Agreement which was recorded
with the Stakes County Register of Deeds Office on August 25, 2008. It is my understanding
that you also need a copy of the Deed to BBID Properties, LLC. I have therefore enclosed a
copy.
If you need additional information, do not hesitate to contact me. Thank you.
Sincer ,
J.II'yrone Browder
JTB/gy g� ' —
z cn
Enclosures` b
�p Q
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CD �I
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'2g '
VED BY STOKES COUNTY ASSESSOR
slake Caaruy 09.26.2Xff
NORTH CAROLINA
Rnl EsWe
Exciw,rzx $1.39o.00
Prepared by: Michael R. Bennett, Atty.
STATE OF NORTH CAROLINA
COUNTY OF STOKES
BK:00573 PG:2033
FILED
STOKES COUNTY
KATHY YOUNG
REGISTER OF DEEDS
FILED Sep 28, 2007
AT 09:12 am
BOOK 00573
START PAGE 2033
END PAGE 2037
INSTRUMENT # 07154
Excise Tax: $1380.00
PIN: 6903-0470-9343
NORTH CAROLINA
GENERAL WARRANTY DEED
This Deed, made this Z' day of September, 2007, by and between CROSSROADS PARTNERSHIP, a
North Carolina General, Partnership, KENT WATTS SLATE (Beneficiary of the Estate of James Norman
Slate, Jr.) (unmarried) and TERRY JAMES SLATE (Beneficiary of the Estate of James Norman Slate, Jr.)
and wife, VICKY SLATE, "Grantor(s)" and BBID PROPERTIES, LLC, "Grantee(s)" whose mailing address is
PO Box 550, King, NC 27021;
WITNESSETH:
That the Grantor(s), for a valuable consideration to them in hand paid by the Grantee(s), the receipt of which is
hereby acknowledged, have bargained and sold, and by these presents does bargain, sell and convey unto the said
Grantee(s), their heirs and assigns, a tract or parcel of land in the County of Stokes, State of North Carolina and
described as follows:
BEGINNING at a point in the centerline of Mountainview Road (SR 1132), said point being located at
NC Grid Coordinates N=930747.97 and E=1607921.75 and South 61 degrees 11 minutes 26 seconds West
423.74 feet from NC Grid Monument "Double" N =930952.17, E=1608293.04; thence from said Beginning
point leaving the centerline of Mountainview Road, South 26 degrees 53 minutes 30 seconds East 30.42
feet to an existing iron, the southern right of way line of Mountainview Road (SR 1132); thence along
Danny Douglas' southwestern boundary line, South 26 degrees 53 minutes 30 seconds East 318,43 feet to
an existing iron; thence along Douglas' southeastern line, North 63 degrees 05 minutes 55 seconds East
271.93 feet to an existing iron in Lot 1 of the "Ruby B. Kiser subdivision" recorded in PB 6, PG 11,
Stokes County Registry; thence South 21 degrees 47 minutes 52 seconds East 174.54 feet to an existing
iron; thence South 21 degrees 49 minutes 41 seconds East 223.65 feet to an existing iron; thence
continuing on the same line, South 21 degrees 49 minutes 41 seconds East 223.63 feet to an existing iron,
the southern corner of Lot 6 of the "Ruby B. Kiser subdivision" recorded in PB 6, PG 11, Stokes County
Registry and the eastern corner of Amy Jo Baker, BK 452, PG 900, Stokes County Registry; thence South
86 degrees 27 minutes 01 seconds West 52.83 feet to an existing iron, the northeast corner of Jean Baker,
1:\MEREDITA\Clime dots\bbid 11c 729 deed.doc

0573 , SK:00573 PG:2034
2039K 140, PG 314, Stokes County Registry; thence along Baker's northern line, South 86 degrees 27
minutes 01 West 285.60 feet to Baker's northwest corner and Madeline Shore's, RK 557, PG 1656,
northeast corner; thence along Shore's northern line, North 85 degrees 57 minutes 25 seconds West
465.17 feet to an existing iron; thence South 74 degrees 42 minutes 38 seconds West 205.22 feet to an
existing iron, the southeastern corner of Coy Lawson, BK 499, PG 44, Stokes County Registry; thence
along Lawson's eastern line, North 08 degrees 53 minutes 55 seconds East 7936 feet to an existing iron;
thence North 11 degrees 25 minutes 26 seconds West 227.02 feet to an existing iron; thence North 31
degrees 32 minutes 47 seconds West 58.00 feet to an existing iron; thence North 33 degrees 39 minutes 33
seconds West 74.77 feet to an existing iron in the eastern right of way of Mountainview Road (SR 1132);
thence North 33 degrees 39 minutes 33 seconds West 32.75 feet to the centerline of Mountainview Road
(SR 1132); thence along the centerline of Mountanview Road the following five courses and distances: (1)
North 33 degrees 20 minutes 10 seconds East 23.96 feet to a point; thence on a curve (R=604.081) North
46 degrees 13 minutes 35 seconds East a chord distance of 269.52 feet to a point; thence North 59 degrees
07 minutes 00 seconds East 145,06 feet to a point; thence on a curve (R=2164.93') North 61 degrees 06
minutes 03 seconds East a chord distance of 149.91 feet to a point; thence North 63 degrees 05 minutes 06
seconds East 30.90 feet to the point and place of Beginning and containing 12.9I1 acres as shown on a
survey prepared by Joe L. Cooke, L-2970 for BRID, LLC dated September 10, 2007 and known as
drawing no. 31561.
Grantor(s), specifically, Crossroads Partnership a North Carolina Partnership, herein received the above -
described property through a deed recorded in BK 318, PG 1760, Stokes County Registry.
Grantor(s), specifically, Kent Watts Slate and Terry James Slate herein received the above -described
property through the Estate of James Norman Slate, Jr., Stokes County Clerk of Court file #2007 E 215. By
signing this document, Grantor, Vicky Slate, is releasing her marital interest in said property.
TO HAVE AND TO HOLD the above -described tract or parcel of land and all privileges and appurtenances
thereunto belonging to the said Grantee(s) and their heirs and assigns forever.
And the said Grantor(s) does covenant that they are seized of said premises in fee simple and have the right to
convey the same in fee simple; that the tract or parcel of land is free from encumbrances; and that they will wan -ant
and defend the said title to the same against the claims of all persons whomsoever except for the exceptions
hereinafter states. Title to the property hereinabove described is subject to the following exceptions:
EASEMENTS AND RESTRICTIONS OF RECORD, IF ANY.
2007 Ad Valorem Taxes.
IN TESTIMONY WHEREOF, the Grantor(s) has hereunto set their hands and seals the day and year first above
written.
CROSSROADS PARTNERSHIP, a
NoipF.
eneral Partnership
By: (Seal)
a , Partner
r
Martha Sue Lewis, Partner
I:\ MEREDITH\Client doh\bbid Le I Z9 deed.doc
By: (Seal)
D rothy F..I nes, P er
By:
10 Nelms, Partner

:0573
2035
(Sea!)
Kent Watts Slate, Beneficiary of the Estate of
James Norman Slate, Jr,
� Liz, (Seal)
Vicky Slate, wi e of Terry James Slate
STATE OF. 001d, QZW Lxa--
COUNTY OF S
BK 00573 PG: 2035
,- /.., fa (Seal)
Terry fame6 Slate, Beneficiary of the Estate of
James Norman Slate, Jr.
I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: Dorothy F,
Jones
Date:
NOTARY
(Official Seal) PUBIC : c, =
CI�1Ut41�
fu
Lf 2bL:,
N—otary\s OtEicl i jrature
Notary's Printed or Typed Name
My Commission Expires: t ZD I l)
STATE OF
COUNTY OF )
I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: Martha Sue
Lewis
Date:.
4z v
1;\MERFDrt'H\Client dots\bbid Ile 12.9 deed.doc
Official Signature
Notary's Printed or Typed Name
My Commission Expires: {

0573
2036TE OF
13K:00573 PG:2036
COUNTY OF C-�okt_Cs
I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: John F. Watts
Date:
0y
• NOTARY
(Official Seal)
emu+' PUBLIC
�A
O g ?`�
STATE OF J jL 4Ck �1
COUNTY OF S-JU7i
Notary's Official Signature
VQVVT Wo )
Notary's Printed or Typed Name
My Commission Expires: Zo i o
I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: John Nelms
Date:
NOTARY ;
(Official Seacn�.. PUBLIC
0"lift, 110
. ••_'.
STATE OF K)AL CC k,4,, a
COUNTY OF o -S
�r
No�ary's,Oflicial Signature
V OA�a - LA 61)
Notary's Printed or Typed Name
My Commission Expires:` Zvo
I certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: Kent Watts
slate
tll!
Dale:
NOTARY
PUBLIC `
(official Seal) �`t,�• ' U
�fCI�
1:\ MEREDrrH\Client dots\bbid ll[ 119 deed.do[
Notary's Officia ignature
\JoA'(w
Notary's Printed or Typed Name 1
My Commission Expires: a 7�tU

b5,73 ,
2037 BK 00573 PG:2037
STATE OF
COUNTY OF S�oitES )
l certify that the following person(s) personally appeared before me this day, each acknowledging to me that he or she
voluntarily signed the foregoing document for the purpose stated therein and in the capacity indicated: Terry James
Slate and wife, Vicky Slate
Date: CI, lq an
1111101///
NOTARY -
u, •• PUBLIC
i A
'i��I gyp' •q• � . �\\�
i:\ MERED1TH\Client doa\bbid llc 129 deed.doc
v
Notary's rry's O ictalgSignature
V C 0A "i
Notary's Printed or Typed Name
My Commission Expires: t 1141 za U

1. )
BK:00587 PG:0613
FILED
STOKES COUNTY
KATHY YOUNG
REGISTER OF DEEDS
FILED Aug 25, 2008
AT 08:38 am
BOOK 00587
START PAGE 0613
END PAGE 0616
INSTRUMENT # 05675
NORTH CAROLINA
STOKES COUNTY AGREEMENT
This Agreement is made as of the 251h day of June, 2008 by and between BBID
Properties, LLC ("BBID") and Columbia Development, LLC ("Columbia");
WITNESSETH:
For and in consideration of the mutual promises and covenants set forth herein the
parties agree as follows:
1. BBID hereby grants to Columbia the right and easement to construct a wet detention
pond within Columbia's land and a portion of BBID's land adjoining Columbia as
shown on the Grading — Layout Plan for Dollar General dated July 11, 2007 and prepared
by Darden Engineering Services. A portion of said drawing is attached hereto and
marked Exhibit A.
2. Columbia shall be responsible for and pay all cost and expense for the construction of
said wet detention pond.
3. Until such time as additional land of BBID is developed, Columbia shall be
responsible for and pay all of the cost and expense for the future repair and maintenance
of said wet detention pond. At such time as BBID develops any of its additional land and
makes use of said wet detention pond, then the owner of each parcel using the wet
detention pond shall be responsible for its pro-rata share of the cost and expense for the
future repair and maintenance of said wet detention pond based on the total number of
parcels using said pond. This obligation shall be appurtenant to all of the land owned by
the parties and shall be binding on all future owners.
4. When the construction of the wet detention pond is finished, Columbia shall furnish to
BBID a survey of said pond as completed designating and defining the outer boundaries
of the pond and all necessary easements for the future use of said pond by Columbia and
BBID, and their successors in title. The attorney for BBID will then prepare a permanent
and appurtenant easement granting to BBID and Columbia and their successors,in title,
the right to use said wet detention pond for surface water runoff from the respective
properties of each. The easement shall also contain the repair and maintenance
provisions as set forth in paragraph 3 above.
5. Each of the parties shall sign the easement for the wet detention pond as described
above, which easement shall be recorded in the Stokes County Register of Deeds.
6. Columbia agrees to indemnify and hold harmless BBID from any and all loss and
liability to third parties arising out of the construction of the wet detention pond on the
land of 13131D.

BK:00587 PG-0614
In Witness Whereof the parties have caused this Agreement to be executed by
their duly authorized Managers as of the date first written above.
BBID Properties, LLC
by its Managers:
Columbia Development, LLC
by its Manager:
(Seal)
TG ? GS

BK:00587 PG:0615
SEAL -STAMP NORTH CAROLINA, STOKES COUNTY.
1, a Notary Public of the County and State aforesaid, certify that J. Tyrone Browder,
d
Darmy R. Douglas, J. Leon Inman and Gary Berry, personally appeared before me this
day and acknowledged that they are Managers of BBID Properties, LLC, a North
Carolina limited liability company, and that by authority duly given and as an act of the
company, the foregoing instrument was signed in its name by its Managers.
Witness my hand and official stamp or seal this day of
2008.
Notary Public
My Commission Expires: T r)LAO (5 001.3
SEAL -STAMP NORTH CAROLINA, U ; �� COUNTY.
+a+rr+++r++++rrararrrr++++++raa I, a Notary Public of the County and State aforesaid, certify that T. C. James, personally.
JENNIFER PARHAM appeared before me this day and acknowledged that he is Manager of Columbia
NOTARY PUBLIC Development, LLC, a North Carolina limited liability company, and that by authority
+ GUILFORD COUNTY, MC
�rrawrrwrrarrrrrrar t duly given and as an act of the company, the foregoing instrument was signed in its name
'*+r+rrrrrrr�
by its Manager. (�
Witness my hand and official stamp or seal this day of I1 Ja
2008.
ary P4blic ) f
My Commission Expires: �� i 1 a'o Z� �%

'A gw BK 00587 PG:0616
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02/15/2008 07:29 7046634933 BRAWLEY CONSTRUCTION PAGE 02
Roger J. Leab
NC Licensed Soil Scientist, # 1064
5297 NC 66 Hwy S.
King, North Carolina
Phone: [phone]
Cel1:336-782-64Z6 rAPR
0"9 20H
February 10, 2008
To: Mr. Lanny Johnson,
Brawley Construction Company
P.O. Box 1067
Moorsevil,l.e, NC 28115
You contacted me, this past week, about evaluating the soil at a site on Mountainview
Road, just off North Carolina Highway 66, near King, North Carolina. It is the
construction site of a new Dollar General Store. You asked me to evaluate the soil area,
where a sand -.filter sewage treatment system is proposed, for, the possible existence of a
seasonal high water table.
I began my evaluation of the site on Friday a#Iernoon, 2/8/08, and completed it on
Saturday morning, 2/9/08. I used a soil auger to bore and then describe six holes in or
about the proposed sand -filter location. The approximate location of the six holes is
located on the attached map (not to scale).
I determined that the soil at this site formed in old alluvium (stream terrace). This was
evidenced by the presents of subrounded and subangular quwts pebbles scattered
throughout the profile of each of the six holes. Further evidence was the soil colors, the
stickiness of the subsoil clay, the soil horizon textures, and the depth of the soil profile in
holes number 2, 3, and. 4. There is no stream of any size, now, flowing in this area.
However, this is definitely old alluvium. Presently, this site is in a head slope landscape
position, which means that surface water and subsurface water start to funnel through this
area toward the main drainageway. The stickiness of the subsoil clay and the fact that it
is alluvium indicates that the clay mineralogy is probably mixed rather than kaoliniti.c.
I observed no water table, currently present, in any of the six holes I bored. However, the
soil profile descriptions (attached) indicate the presents of a seasonally perched water
table. Hole (stop) # 4, which I bored to a depth of 82 inches, gives the best indication. It
had redox iron accumulations starting at a depth of about 6 inches and continued to a
depth of 82 inches and at that depth I had auger refusal by contact with a large quartz
pebble or pebbles. This hole had redox depletions of'chroma 2 or less starting at a depth
of about 13 inches and continuing to a depth of 45 inches. Below a depth of 45 inches
there were some redox depletions, but they were chrome 3 or 4. Also, at a depth of about
45 inches the estimated sail texture dropped from clay to clay loam and at a depth of 57
inches to a sandy clay loam. Hole # 3 had a similar profile with chrorna 2 or less gray
colors starting at a depth of about 26 inches and stopping at a depth of about 47 inches at
which point the estimated soil texture dropped from sandy clay to sandy clay loam.

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02/15/2008 07:29 7046634933 BRAWLEY CONSTRUCTION PAGE 03
Holes # 5 and 6 had redox depletions of chroma 2 or Ids each starting at a depth of about
13 inches and continuing, at least, to a depth of, anger r�fusal by contact with a large
quartz pebble or pebbles at 34 inches. Dole # 1 had redox accumulations starting at a
depth of about 13 inches, but redox depletions with chcbma 2 or less gray colors did not
occur until a depth of about 52 i.nche§ and continued t�ad
auger refusal by contact with a
large quartz pebble or pebbles at 54 inches. Hole # 2 redox accumulations starting at
a depth of about 19 incites. but redox depletions with c6oma 2 or less gray colors did not
occur until a depth of about 44 inches and continued td a depth of about 59 inches. From
a depth of 59 inches to a depth. of 61 inches, there were redox accumulations and
depletions, but the depletions were chroma 4 and not c6oma 2.
Summary: Redox features in all six holes indicate a seasonal high water table.
Holes # 2, 3, and 4 indicate by not having chroma 2 or less gray soil colors in the
deepest horizons that the water table is perched. Holes # 1, 5, and 6 would probably
show a perched water table, also, if I had gotten the holes deeper. A, perched water
table is common in old alluvium where a heavier textured material, such as clay,
aver lies a lighter textured material, such as sandy clay loam. During very wet
periods of high preciipitatiOn, most likely between November and March, the water
that enters the soil and moves down into the well structured, clayey subsoil can not
move into the coarser textured, less structured underlying sandy clay loam as fast as
it moves down through th�. subsoil. Therefore, the water stacks -up on top of the
coarser textured material; ikeeping the soil saturated for sufficient days to produce
the chroma 2 or less gray colors; indicative of soil wetness and a seasonal high water
table. The fact that the auger holes only show about I to 15 percent gray redox
depletions in one or more Boil horizons indicates that the soil probably does not stay
saturated for more than a few weeks at a time during the wettest years. The soil
may not be saturated for more than a few days during drier years. This is also
evidenced by the tact that the soil was very moist, but no water table was observed
during this period of extended drought in North Carolina, even after recent rains.

02/15/2008 07:29 7046634933
BRAWLEY CONSTRUCTION
PAGE 04
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SW4080101 - King Dollar General - Additional Information Request
Subject: SW4080101 - King Dollar General - Additional Information Request
From: Robert Patterson <Robert.l'[e-mail]>
Date: Mon, 14 Apr 2008 09:59:55 -0400
To: Jason Layne <jasonelayne a aol.com>
CC: [e-mail]
yahoo.com
Jason,
As we discussed on the phone this morning, we received on -April 9, 2008 your
resubmittal in response to the additional information letter sent on February 1,
2008. In order for us to continue reviewing your application please address the
following items.
1. DWQ does not allow "artificial" dewatering of the shwt in order to meet the
requirements for the 2' minimum separation of open sand filters bottom and the shwt.
We suggest maybe selecting another bmp that does not require the separation like a
wetland, wetpond, etc.
2. If your revised plans propose a level spreader, please be sure to completely
fillout the level spreader supplement form and design it based on the requirements in
the BMP Manual. One of the options under "Level Spreader Design" must be marked "Y"
for Yes. Also, if the design flow is 12 cfs as stated, please note the automated
comment next to "Design flow" on the supplement form.
3. On SP-3, the level spreader lip cannot have any soil on top of it. Also, the
elevations in the section appear to be incorrect.
The requested information should be received by this office prior to May 3, 2008, or
the application will be returned as incomplete. The return of a project will
necessitate resubmittal of all required items, including the application fee.
Robert D. Patterson, PE
Environmental Engineer
NCDENR I DWQ I Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone] ext. 360
Fax: [phone]
Email: [e-mail]
Website: htto://h2o.enr.state.nc.us/su/stormwater.html
I of 1 4/14/2008 10:00 AM

i
t
DARDEN E1 GEIVEFARINO SERVICES
184 Rolling Hills Rd, Suite A-2
Mooresville, NC 28117
---- _ - P. 704-663-7738
F. 704-663-0219
E. danienengineering®alltel.net
January 28, 2008
King, Dollar General Store
APR 0 9 200.8
BMP Narrative
How it works:
As rainwater collects in the store's parking areas it will be directed by ground slope into catch basins. Smooth -
walled high density polyethylene pipes will then carry the stormwater to the flow splitter. The flow splitter will
allow the first 1 inch of stormwater runoff to enter the sand filter and be treated of any suspended solids. The
treatment in the sand filter will take place by allowing the stonnwater to flow into a forebay area where low
velocities will allow suspended particles to settle out. The upper volume of the stormwater will then be able to leach
into the sand where any remaining solids will be able to be filtered out. Perforated pipes lying under the sand will
collect the filtered stormwater and convey it to a ditch running along the side of the property.
For storms that produce runoff greater than I inch the flow splitter will allow the excess stormwater buildup and
over flow a weir fixed at a set elevation in the flow splitter. The overflow will then be directed via pipe to a level
spreader which will in turn spread the excess stormwater evenly over a vegetative filter.

'A
f
�:L7
{`1 6ni

DARDEN ENGINEERING SERVICES
184 Rolling Hills Rd, SuiteA-2
Mooresville, NC 28117
P. 704-683-7738
F. 704-663-0219 r
E. dardenengineedng®alltel,net
April 7, 2008
Robert D. Patterson, P.E.
Environmental Engineer
D
Stormwater permitting Unit
North Carolina Department of Environmental Resources
FOR Q [ , ; i
Attention: Robert D. Patterson
Reference: Review letter for the proposed King, Dollar General Store
Mr. Patterson:
I have received your preliminary review letter of concern for the King, Dollar General site plan and have
addressed your comments as follows.
I. Supplemental forms have been filled out and submitted with this revision for both the sand filter and the
level spreader.
2. I have adjusted the inconsistencies we spoke of over the phone on the Stormwater Management Permit
Application.
3. Attached is a copy of the soil report for the site. The soil scientist did report there was a SHWT (seasonal
high water table) at the location of the sand filter. He also reported the SHWT was minimal and probably
only happened at the wettest time of the year. We did look further into this matter and consulted with
Atlantic Coast Engineering and Testing, INC. They have stated in an attached letter that with the building
and parking area in its location, if we install a curtain drain above the sand filter it will resolve any trace of
the SHWT.
4. Drainage area maps have been added to the plans.
5. Roof drains have been directed into the catch basins and notes have been placed on the plans stating as
much.
b. There are not wetlands on the property and a note has been placed on the plans stating so.
7. A level spreader has been added to the plans to convey the overflow from the sand filter into a 30 foot
vegetative strip.
8. The deed restrictions for we submitted for this project will be dismissed.
All of the corrections stated above have been made as per your request. Thank you for your time.
Sincerely,
Jason E Layne

npr 02 2008 10:06RM EVRNS ENGINEERING 13368548876 p.3
04/01/2808 15:19 33666450BO
PAGE e2
ATLANTIC COAST ENGIINEERiNG AND TESTING, INC.
8 LOCKHEED COURT GRFFNSHOR0, N.C. 27409
PHONE: [phone]
March 31, 2008
Mr. Drew Fleming, EIT
Evans Engineering, l-oc.
4609 Dundas Drive
Greensboro. North Carolina 27407
RE: King, D91lar General
Dear Mr. Fleming,
Rc��oe151�
APR 0 9 2009
We have reviewed the attached curtain drain plan to be installed undgradiant
from the sand filter, To provide positive drainage and maintain a 24" zone
between the sand filter bottom and the "perched" water, we recommend
installing full depth clean washed stone (#57) to an elevation of 876 or 2.0,
below the sand filter bottom.
The drain should maintain at least a 1/2% slope and consist of a 3.2" lift of
clean washed stone base, a 4" perforated pipe covered with clean washed
stone extended to near the existing ground surface elevation to provide a
"curtain" type drain. The entire drain and stone section should be wrapped in
a light mesh fabric.
An ACET representative should be on site during the drain installation to
assist the contractor and verify the drain installation.
If we can be of any further assistance, please contact us at your convenience,
ATLANTIC COAST ENGINEERING
AND TESTING, INC.
Pw�I I
B tcgns, .lr,,` nager
V9
Donald M. Wojek, P.E.
NCPE 05060
Ste
Attach gent

.. ,�
4E_j f"r- f f�
..�
' fi'�Fi:?'it�, ;';i€7"%Y'!Si3f'?,-'+ �.it�1�`�+�

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen li. Sullins Director
Division of Water Quality
February 1, 2008
Mr. T. Cooper James
Columbia Development, LLC
PO Box 10325
Greensboro, NC 27404
Subject: Request for Additional Information
Stormwater Project No. SW4080101
King, Dollar General
Stokes County
Dear Mr. James:
The Division of Water Quality Central Office received a Stormwater Management Permit Application for
the subject project on January 31, 2008, A preliminary review of that information has determined that the
application is not complete. The following information is needed to continue the stormwater review:
✓l . A Supplement Form must be submitted for each BMP (sand filter) used in the project. 'These
forms are available at the following web address: http://h2.o.enr.state.ne.us/sit/btiip forms.htm
✓2. There appears to be inconsistencies related to the drainage area size and impervious areas
listed on SWU-1.01, Part 1I1.9. Please contact me to discuss in more detail.
3. Please provide soil information used to estimate the seasonal high water table (SI-1WT). The
bottom of the sand filter must be at least 2 iect above the SHWT. The Sl-1WT must also be
shown on the sand filter cross-section.
J 4. Please provide a drainage area map that delineates the proposed drainage area to the sand
filter.
5. Please show the roof drain collection system; or add a note on the plans that all roof drains
must be directed to drain to the sand filter.
✓ 6. All wetlands on the property must be delineated and shown on the plans; or provide a note on
the plans that none exist.
�7. The required 30 foot minimum vegetated filter strip must be designed as per chapter 13 of the
BMP Manual. This includes providing a mechanism to evenly distribute the slow across the
length of the filter strip. Also, a detail of the filter strip should be shown on the plans.
8. Deed restrictions were submitted, but are not required for this project. They are only required
for subdivisions and projects with lots or out parcels. No`hcarofina
)afrrra!!y
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: www,newaterquaGty.org Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled110% Post Consumer Paper
I

Mr. T. Cooper .lames
S W4080101 — King, Dollar General
February 1, 2008
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to March 3, 2008, 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.
Please reference the State assigned project number SW40801.01 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] ext. 360.
Sincerely,
Robert D. Patterson,.P.E.
Environmental Engineer
Stormwater Permitting Unit
cc: Mr. Allen Brawley, PO Box 1067, Mooresville, NC 28115
Winston-Salem Regional Office
DWQ Central Files
Stormwater Permitting Unit Files

King, Dollar General
Wet Detention Pond Calculations
June 3, 2008
Revised:
June 22, 2008
Prepared For:
JUL 2 R 7U0�
wefand ' 1'7 Qclat►
nds 8,
---�Stor►nwater_ Stanch
Dollar General Stores
Prepared By:
Darden Engineering Services
184 A-2 Rolling Hills Rd
Mooresville, NC 28117
P. 704-663-7738
F. 704-663-0219
seal

44

Table of Contents
PAGE
AreaRainfall Depth Data................................................................................................
Area Rainfall Intensity Data.... ... .............. ......... ............................. ......... ........ 2
Pre Developed Runoff to Wet Pond (Rational Method)........................................................................ 3-9
Post Developed Runoff to Wet Pond (Rational Method)...................................................................... 10-16
Pre Developed Runoff to Wet Pond (SCS Method).............................................................................. 17-22
Post Developed Runoff to Wet Pond (SCS Method)............................................................................. 23-28
WetPond Design............................................................................................................................ 29
Water Quality Draw Down Chart..................................................................................................... 30
WetPond Model.................................................................................. ........ 31-48

POINT PRECIPITATION f` �`
FREQUENCY ESTIMATES i
`- FROM NOAA ATLAS 14
WINSTON SALE11 RI?!'NOL, \'OR'I'll CAROLINA (31-9539) 36.1333 N 80.2333 NN' 944 I'm
from'Precipilation-frequency Atlas ofthe United States' NOAA Atlas 14, Volume?- Version 3
G.M. Bonnin, D. Martin, E. Lin, T. Parcybok, NI.l'ekta, and D, Riley
NOAA, National Wc;gher Service, Silver Spring, Maryland. 2004
Extracted: Tuc Jrm 17008
Confidence Limits - Seasonality: LocatiomMaps- Othe: lnfo: GIS data rr Maps Help Docs U.S. Map,
Precipitation Frequency Estimates (inches)
Uil
lti )
IZZZ
311
Ill {II
M60I_flll
112(1
1.50
3.,hi,
LGI
PFI-27HE�][Z[�2E��lVL'il
Ill'
E7 Efl 2.83 3E
3.69
4.22
IY
2ll
(IaY
Z30 45 6I.
8.00 10.07 22.05
�U.37 0.60 0.74 1.02
1.27
4.79
6.46
0�0.44 0.71 0.89 1.23
L54
1.82 1.95
2.38 2.R5 3.42
3.97
4.43 5.04
5.7V
7.63
9.41 11.80 14.07
I 10.52 f1.83 1.U5 1.50
1f1 057 0.92 I.{6 1.68
2i 0.63 1.01 1.28 1.89
192
2.19
2.52
2.28 2.45
2.G2 2.82
3.06 3.31
3.40 3.68
299 3.58 4.28
3.45 4.16 4,9{,
4,08 4.97 5.89
4.58 S.GI G.G3
4,92 5,47 6.13 6.9-71
5.6E G.28 7.U0 7,79
6.66 7.39 8.18 9.03
7.45 8.27 9.11 lO.OI
9.04
I(1.17
1I.70
12.90
1095 13.54 15.90
12,13 14,88 17.31
V3.68 16.62 19.10
14,87 17.95 20,44
5Il 0.67
1.07
1,35 2.04
2.76
Iflll 0.71
1.12
1.42 2.i7
3.00
16.04 H2fl 21.73
3.73 4.(IS 5,08 6.29 7.40 8.25 1 9.16 00. 77 EE0 E2
211f1 0.74
SIIII 0.77
IUUf) 0.79
].17
1,22
1,25
1A8 2.30
1.53 2.44
1,57 2.54
3.22
3.50
3.70
4.0E 4.42 5.59 6.99 8.20 9.U7 10.09 11.05 1202 55.36
4.49 4.90 6.29 7.98 9.30 10.19 11.37 12.4 133.40 17.04
4.82 5.27 6.83 8.76 10.19 i 1.07 12.37 13.46 14.4R 1R.35
E2d E3 22.97
18.75 22.22 24.55
19.93 23.50 25.72I
' These precipitation frequency estimates are based on a partial duration series, AAI is the Average Recurrence Interval.
Please refer to the documentation for more information. NOTE: formatting farces estimates near zero to appear as zero,

POINT PRECIPITATION,µk."
Y FREQUENCY ESTIMATES z
�� �� �' FROM NOAA ATLAS 140
WINSTON SALEtM REYNOL, NORTH CAROLINA (31-9539) 36.1333 N 80.23331N' 944 feet
from "PTecipitation-],Tegacncy Atlas of she United Stases" NOAA Atlas 14, Vol mie 2, Version 3
G.M. Bonnin, D. Martin, 13. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Wenther Service, Silver Spring, Maryland, 2004
i>stracted. Wed Jul 16 2008
Confidence Limits Location Maps. Other Info. fIS data Maps I Help Docs U.S. Map
Precipitation Intensity Lstimates (inlhr)
ARI*
S
❑❑❑❑❑
16
l.5
30
60
gl�.Ofl
3_hr
EHHHj[;2F
0
2{l.
❑�
3U
45
60
(Years)
mm
mm
mui
mm
lnm
da
d
cla►
da :
->
da}
4.48
3.58 2.98 2.D4 1.27 0.75 D.54 0.33 0.20 0.12 0.07 0.04 0.03 0.02 0.01 0.01 0.01
0.01
l�
4.25 3.Sfi 2.4G ].54 {1.91 O.GS 0.40 0.24 (}.14 f}.(}8 {1.05 0.03 (}.(l2 0.02 0.01 O.DI
D. DI
�--� �15.32
I 16.24
5.00 4.22 2.99 1.92 1. ! 4 0.82 r0-T01 0.30 b. 18 D. ] 0 0.06 0.04 0.03 QO2 0.02 0.01
(}.0l
10
6.86
5.50 4.63 3.3G 2,19 1.3 I 0.94 0.58 0 35 0.2! 0. ] 2 0.07 0.04 0.03 0.02 0.02 O.O l
O.O l
25
7.58
6.05 5.11 3.78 2S2 1.53 1.10 0.68 0.41 0.25 0.14 0.08 0,05 0.04 0.02 0.02 0.02
O.OI
50
8.06
6.42 5.42 4.08 2.7G 1.70 1.23 0.76 0.47 0.28 O.1 G 0.(}9 (1.05 U.04 0.03 0.(i2 O.D2
D.01
100
8.48
6.74 5.68 4.35 3.00 1,87 1.35 0.85 O.S2 0.31 0.17 0.10 0.06 0.05 0.03 0.02 0.02
0.02
200
8.84
7.01 Efl 4.59 3.22 2.03 1.47 0.93 0.58 D.34 0.19 0. f 1 O.D7 0.05 0.03 0.02 0.02
0.02
S00
9.24
7,31 6.14 4,88 3.5U 2.25 1.63 1.05 0.66 D.39 0.21 (1.12 0:(17 0.06 0.(l4 0.03 (}.02
0.02
1000
9.50
7.49 6.26 5.07 3.70 2.41 1.75 1.14 O.T 0.42 0.23 0.13 D.08 DA6 0.04 D.03 0.02 0.02
' These precipitation frequency estimates are based on a partial duration series,. ARi is the Average Recurrence Interval.
Please refer to the documentation for more information, NOTE: Formatting forces estimates near zero to appear as zero.

r)
Stormwater BMP Rational NC -Winston Salem 9-Year Duration=1, 440 min, lnten=0.12 inlhr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.14 cfs @ 0.09 hrs, Volume= 0.273 af, Depth> 1.58"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00724.00 hrs, dt= 0.01 hrs
NC -Winston Salem 1-Year Duration=1,440 min, Inten=0.12 inlhr
Area (ac) C Description
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) _ (feet)_ (Ftlft) ftlsec) (cfs)
5.0 Direct Entry,

Stormwater BMP Rational NC -Winston Salem 2-Year Duration=1,440 min, lnten=0.14 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 0017510 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.16 cfs @ 0.09 hrs, Volume= 0.318 af, Depth> 1.85"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 2-Year Duration=1,440 min, Inten=0.14 inlhr
Area (ac) C Description
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfs) _
5.0 Direct Entry,

Stormwater BMP Rational NC -Winston Salem 5-Year Duration=1,440 min, lnten=0.18 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.21 cfs @ 0.09 hrs, Volume= 0.409 af, Depth> 2.37"
Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 5-Year Duration=1,440 min, Inten=0.18 in/hr
Area (a6 C Description
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,

Stormwater BMP Rational W-Winston Salem 10-Year Duration=1,440 min, Inten=0.21 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.24 cfs @ 0.09 hrs, Volume= 0.477 af, Depths 2.77"
Runoff by Rational method, RiselFall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 10-Year Duration=1,440 min, Inten=0.21 inlhr
Area (ac) C Descriotion
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 T Direct Entry,

Stormwater BMP Rational NC -Winston Salem 25-Year Duration=1,440 min, Inten=0.25 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff - 0.29 cfs @ 0.09 hrs, Volume= 0.568 af, Depth> 3.29"
Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 25-Year Duration=1,440 min, Inten=0.25 in/hr
Area (ac) C Description _
1.800 0.50 >75% Grass cover, Good, HSG D -
0.270 0.90 Paved parkin & roofs _
2,070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ft/sec)_ (cfs)
5.0 Direct Entry,

Stormwater BMP Rational NC -Winston Salem 50-Year Duration=1,440 min, lnten=0.28 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HvdroCAD® 8.50 sln 001751 © 2007 HvdroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.32 cfs @ 0.09 hrs, Volume= 0.637 af, Depth> 3.69"
Runoff by Rational method, RiselFall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 50-Year Duration=1,440 min, Inten=0.28 inlhr
Area (ac) C Description
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
min feet ftlftftlsec cfs
5.0 Direct Entry,

Stormwater BMP Rational NC -Winston Salem 100-Year Duration=1,440 min, Inten=0.31 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area.: Pre -Developed Runoff
Runoff = 0.36 cfs @ 0.09 hrs, Volume= 0.705 af, Depth> 4.09"
Runoff by Rational method, RiselFall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 100-Year Duration=1,440 min, Inten=0.31 in/hr
Area (ac) C Description
1.800 0.50 >75% Grass cover, Good, HSG D
0.270 0.90 Paved parking & roofs
2.070 0.55 Weighted Average
2.070 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) cfs
5.0 Direct Entry,

Stormwater BMP Rational NC -Winston Salem 1-Year Duration=1,440 min, lnten-0.12 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCADO 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff = 0.17 cfs @ 0.09 hrs, Volume= 0.344 af, Depth> 1.98"
Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 1-Year Duration=1,440 min, Inten=0.12 in/hr
Area (ac) C_Description
1.080 0.50 >75% Grass cover, Good, HSG D
1.000 0.90 Paved parkina & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
Of

Stormwater BMP Rational NC -Winston Salem 2-Year Duration= 1, 440 min, lnten=0.14 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 00.1751 © 2007 HydroCAD Software Solutions LLC
Summary for Sebcatchment Area: Post -Developed Runoff
Runoff — 0.20 cfs @ 0.09 hrs, Volume= 0.401 af, Depth> 2.31"
Runoff by Rational method, RiselFall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 2-Year Duration=1,440 min, inten=0.14 inlhr
Area (ac) C. Description
1.080 0.50 >75% Grass cover, Good, HSG D
1.000 0.90 Paved parking & roofs _
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
min feet ftlftft/sec cfs
5.0 Direct Entry,
im

Stormwater BMP Rational W-Winston Salem 5-Year Duration=1,440 min, Inten=0.18 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
Hydro CAD® 8.50 sln 001751 02007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff - 0.26 cfs @ 0.09 hrs, Volume= 0.516 af, Depth> 2.98"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 5-Year Duration=1,440 min, Inten=0.18 inlhr
Area (ac) C. Description
1.080 0.50 >75% Grass cover, Good, HSG D
1 MO 0.90 Paved parking & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
min (feet) (ftlft) (ft/sec) (cfs)
5.0 _ Direct Entry,
12

Stormwater BMP Rational NC -Winston Salem 90-Year Duration=9,440 min, lnten=0.29 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff = 0.30 cfs @ 0.09 hrs, Volume= 0.602 af, Depth> 3.47"
Runoff by Rational method, RiselFall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 10-Year Duration=1,440 min, Inten=0.21 inlhr
Area (ac) C. Description
1.080 0.50 >75% Grass cover, Good, HSG D
1.000 0.90 Paved parking & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
min feet ft/ft) (ft/sec) (cfs
5.0 Direct Entry,
13

Stormwater BMP Rational NC -Winston Salem 25-Year Duration=9,440 min, lnten=0.25 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
H droCAD® 8.50 sln 001751 ©2007 H droCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff = 0.36 cfs @ 0.09 hrs, Volume= 0.716 af, Depth> 4.13"
Runoff by Rational method, Rise/Fall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 25-Year Duration=1,440 min, Inten=0.25 inlhr
Area ac C Description
1.080 0.50 >75% Grass cover, Good, HSG D
1.000 0.90 Paved parking & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
Amin)__ (feet) (ftlft) (ftlsec) (cfs) _
5.0 Direct Entry,
14

Stormwater BMP Rational W-Winston Salem 50-Year Duration= 1, 440 min, Inten=0.28 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff = 0.41 cfs @ 0.09 hrs, Volume= 0.802 af, Depth> 4.63"
Runoff by Rational method, RiselFall=1.011.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 50-Year Duration=1,440 min, Inten=0.28 inlhr
Area (ac) C Description _
1.080 0.50 >75% Grass cover, Good, HSG D
1.000 0.90 Paved_parkinq & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec)____ cfs
5.0 Direct Entry,

Stormwater BMP Rational W-Winston Salem 100-Year Duration=1,440 min, lnten=0.31 in/hr
Prepared by Darden Engineering Services Printed 7/16/2008
Fi droCAD® 8.50 s/n 001751 © 2007 H droCAD Software Solutions LLC
Summary for Subcatchment Area: Post -Developed Runoff
Runoff = 0.45 cfs @ 0.09 hrs, Volume= 0.888 af, Depth> 5.13"
t
Runoff by Rational method, Rise/Fall=1.0/1.0 xTc, Time Span= 0.00-24.00 hrs, dt= 0.01 hrs
NC -Winston Salem 100-Year Duration=1,440 min, Inten=0.31 in/hr
Area (ac) C Description
1.080 0.50 >75% Grass cover, Good, NSG D
1.000 0.90 Paved parking & roofs
2.080 0.69 Weighted Average
2.080 Pervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (R/sec) (cfs)_
5.0 Direct Entry,
16

Stormwater BMP SCS Type 11 24-hr 1 yr 24 hr Rainfall=2.83"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 4.80 cfs @ 11.96 hrs, Volume= 0.215 af, Depth= 1.25"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type 11 24-hr 1 yr 24 hr Rainfall=2.83"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D ^
0.270 98 Paved parking & roofs
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) Meet) (ftlft) (ftlsec) (cfs)
5.0 Direct Entry,
17

Stormwater BMP SCS Type 11 24-hr.2 yr 24 hr Rainfall=3.42"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 6.58 cfs @ 11.96 hrs, Volume= 0.296 af, Depth= 1.72"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 2 yr 24 hr Rainfall=3.42"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D
0.270 98 Paved parking & roofs
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft)_ (ft/sec) (cfs)
5.0 Direct Entry,
M

Stormwater BMP SCS Type ll 24-hr 10 yr 24 hr Rainfall=4.96"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 11.44 cfs @ 11.96 hrs, Volume= 0.525 af, Depth= 3.04"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 yr 24 hr Rainfall=4.96"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D
0.270 98 Paved parking & roofs _
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
5.0 Direct Entry,
ig

Stormwater BMP SCS Type 1124-hr 25 yr 24 hr Rainfall=5.89"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 Hydro CAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 14.43 cfs @ 11.96 hrs, Volume= 0.670 af, Depth= 3.89"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 25 yr 24 hr Rainfall=5.89"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D
0.270 98 Paved parking & roofs
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ftlsec) (cfS) -
5.0 Direct Entry,
20

Stormwater BMP SCS Type 1124-hr 50 yr 24 hr Rainfall=6.63"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD@ 8.50 sln 001751 02007 HydroCAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 16.82 cfs @ 11.96 hrs, Volume= 0.788 af, Depth= 4.57"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type 11 24-hr 50 yr 24 hr Rainfall=6.63"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D
0.270 98 Paved oarkina & roofs
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
min feet ft/ftftlsec cfs
5.0 Direct Entry,
24

Stormwater BMP SCS
Type 1124-hr 100 yr 24 hr Rainfall=7.40"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 H ddroCAD Software Solutions LLC
Summary for Subcatchment Pre: Pre -Developed Runoff
Runoff = 19.31 cfs @ 11.96 hrs, Volume= 0.913 af, Depth= 5.29"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 yr 24 hr Rainfall=7.40"
Area (ac) CN Description
1.800 80 >75% Grass cover, Good, HSG D
0.270 98 Paved parking & roofs
2.070 82 Weighted Average
1.800 Pervious Area
0.270 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) _ (feet)_ (ft/ft) (ft/sec) (cfs) _
5.0 Direct Entry,
22

Stormwater BMP SCS Type 11 24-hr 9 yr 24 hr Rainfall=2.83"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 6.56 cfs @ 11.96 hrs, Volume= 0.301 af, Depth= 1.75"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 1 yr 24 hr Rainfall=2.83"
Area (ac) CN Description
1.070 80 >75% Grass cover, Good, HSG D
1.000 98 Paved parkinq & roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ftlft) (ft/sec) (cfs)
5.0 Direct Entry,
23

Stormwater BMP SCS Type !l 24-hr 2 yr 24 hr Rainfall=3.42"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 8.46 cfs @ 11.96 hrs, Volume= 0.394 af, Depth= 2.28"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type 11 24-hr 2 yr 24 hr Rainfall=3.42"
Area (ac) CN Description
1.070 80 >75% Grass cover, Good, HSG D
1.000 98 Paved parking & roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) _ (ftlft) (ft/sec) (cfs)
5.0 Direct Entry,
24

Stormwater BMP SCS Type 1124-hr 90 yr 24 hr Rainfall=4.96"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 0 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 13.43 cfs @ 11.96 hrs, Volume= 0.644 af, Depth= 3.73"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 10 yr 24 hr Rainfall=4.96"
Area ac CN Description
1.070 80 >75% Grass cover, Good, HSG D
1.000 98 Paved parking & roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ftlsec) (cfs)
5.0 Direct Entry,
25

Stormwater BMP SCS Type Il 24-hr 25 yr 24 hr Rainfall=5.89"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 16.41 cfs @ 11.96 hrs, Volume= 0.798 af, Depth= 4.63"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type 11 24-hr 25 yr 24 hr Rainfall=5.89"
Area (ac) CN Description
1.070 80 >75% Grass cover, Good, HSG D
_ 1.000 98 Paved parking & roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) _ (feet) (ft/ft) (fUsec) (cfs)
5.0 Direct Entry,
26

Stormwater BMP SCS Type Il 24-hr 50 yr 24 hr Rainfall=6.63"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 18.77 cfs @ 11.96 hrs, Volume= 0.922 af, Depth= 5.35"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 50 yr 24 hr Rainfall=6.63"
Area (ac) CN Description _
1.070 80 >75% Grass cover, Good, HSG D
1.000 98 Paved parkina & roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
min feet ftlftftlsec cfs
5.0 Direct Entry,
27

Stormwater BMP SCS Type // 24-hr 100 yr 24 hr Rainfall=7.40"
Prepared by Darden Engineering Services Printed 7/16/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC
Summary for Subcatchment Post: Post -Developed Runoff
Runoff = 21.21 cfs @ 11.96 hrs, Volume= 1.052 af, Depth= 6.10"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs
Type II 24-hr 100 yr 24 hr Rainfall=7.40"
Area (ac) CN Description
1.070 80 >75% Grass cover, Good, HSG D
1.000 98 Paved parking &_roofs
2.070 89 Weighted Average
1.070 Pervious Area
1.000 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft)__ (ft/sec) (cfs)
5.0 Direct Entry,
28

DABDEN ENGINEERING SERVICES
164 Rolling Hills Rd, Suite A-2
Moorewile, NC 29117
P.704-663-7738
F. 704-663-021 g
E. into-nMwdeneng:corn
Storm Water BMP Design for Wet Pond
Project: King, Dollar General Date: 6I212008
Total Drainage Area = 2.07 Acre Percent Impervious = 48.31 %
Impervious Area = 1.00 Acre Mean depth of Pond = 3 ft
Table W-3
%irface Area to Drainage Area Ratio for Perxnaneilt Poo! Sizing to Achieve. 110 Pcr._.rrr T55
Pollutant Removal Efficieiw,'. in the .Vfowf ,,i1r mid Pic woxr Pegioro, Actaptec-1 fraix,: Driscoll, "198b
Percent
Iniper,-ious
Cover
3.0
3.5
-1.0
Pernlaiient Poo: Average
=.5 5.0 5-3
Depth (ft)
60 6.5 7.0
7.5
5,0
8-5
9.0
1010
0.9
0.4
0.S
07
0-6
0.6
0.5
0.5
0-5.
0.5
0.4
0,41
0.4
2000
1.5
1.3
1.1
1.0
1.0
0.9
0-9
0.9
O.S
0.9
0.8
0.7
0.7
30'„
1.9
1.S
1.7
1.5
1.4
1.4
1.3
1.1
1.0
1.0
1.0
0.9
0.9
40Ia
2.5
2.3
2.0
1.9
1.9
1.7
1.6
1.5
1-3
1.4
1.3
1-2
1.1
3.0
2.S
2.5
2-3
2-0
1.9
1.9
1.3
1.7
1-6
1,tv
1.3
1.5
b0'<n
5
3.2
2.5
2-7
2.5
2.4
2.2
2.1
1,9
1-9
1.8
1.S
1.7
r0ao
4.0
3.7
3.1
2.8
2.7
2-3
2.4
2.2
2.1
2.0
2.0
1.9
S13%
4.5
4.1
J.S
,3,5
3.3
�, .0
2.S
2..
2.6
14
2.3
2.1
2.0
90'6
5.0
4.7
4.0
3-S
3.3
3.3
3.0
2.9
7.S
'./
2.15
2-5
2.4
Pond Surface Area
Use 3 from chart Min. Pool Area = 0.06 Acre or 2.705.1 ftz
Minimum Stormwater Volume to be Controlled
(Simple Method as described by Schueler)
RV = 0.05 +0.009(1) 1 = Total Area/Impervious Area
I = 48.31
RV = 0.48
V = (Design Rainfall) x (RV) x (Drainage Area)
Design Rainfall to Control = 1 in.
V = 0,08 acre'ft
V = 3,642.72 W
29

DARDEN ENGINEERING SERVICES
164 Rolling Hills Rd, Suite A72
Mooresville, NC 26117
P. 704-663-77 38
F. 7D4-662-0219
E. [e-mail]
Water Quality Drain Down
Flow:
Time:
Q=C �Ho�3)
Orifice Size (Ai):
Area of Orifice
Orifice Coeficent (CD):
Elev. Of Temp. Water Quality Pool (h1):
Elev. At Center of Orifice (h2):
Ho/3 = (h,-h2)/3:
Gravity (G):
Flow (Q):
1 inch
0.0055 ftz
0.60
477.2 ft
476.5 ft
•0.2333 ft
32.2 ftlsec2
0.0127 ft3lsec
V
Q
Water Quality Volume (V) = 3,907 ft3
Draw Down Time (t) = 3.56 days (Must be between 2-5 days)
30

Stormwater BMP SCS Type 1124-hr 1 yr 24 hr Rainfall=2.83"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 s/n_001751_ Q 2007 HydroCAD Software Solutions LLC Page 46
Summary for Pond F-1: Forebay
[87] Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 1.75" for 1 yr 24 hr event
Inflow = 6.56 cfs @ 11.96 hrs, Volume= 0.301 of
Outflow = 5.58 cfs @ 12.00 hrs, Volume= 0.301 af, Atten= 15%,
Lag= 2.5 min
Primary - 5.58 cfs @ 12.00 hrs, Volume= 0.301 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs / 3
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.13' @ 12.00 hrs Surf.Area= 1,854 sf Storage= 4,741 cf (1,796 cf
above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 131.8 min calculated for 0.234 of (78% of inflow)
Center -of -Mass det. time= 2.9 min ( 815.0 - 812.1 )
Volume _Invert Avail.Storage Storage Description
#1 473,50' 9,154 cf Forebay (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) (cubic -feet)
(sq-ft)
473.50 468 88.0 0 0
468
474.00 560 96.0 257 257
594
474.50 660 104.0 305 561
731
475.00 768 112.0 357 918
878
476.00 1,008 128.0 885 1,803
1,207
477.00 1,280 144.0 1,141 2,945
1,579
477.20 1,449 191.0 273 3,217
2,832
.478.00 1,795 205.0 1,295 4,512
3,301
479.00 2,297 222.4 2,041 6,553
3,930
480.00 2,916 239.8 2,600 9,154
4,611
Device Routing Invert Outlet Devices
#1 Primary 478,00' 30.0' long x 1.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08
3.20 3.28 3.31
3.30 3.31 3.32
#2 Primary 477.00' 2.00 cfs Exfiltration Thru Rip Rap Berm when above invert
Primary OutFlow Max=5.55 cfs @ 12.00 hrs HW=478.12' TW=477.26' (Dynamic Tailwater)
�1=Broad-Crested Rectangular Weir (Weir Controls 3.55 cfs @ 0.95 fps)
2=Exfiltration Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
31

Stormwater BMP SCS Type // 24-hr 1 yr 24 hr Rainfall=2.83°
Prepared by Darden Engineering Services Printed 7/22/2008
H droCADO 8.50 s/n 001751 © 2007 H droCAD Software Solutions LLC Page 47
Summary for Pond P-1: Wet Pond
[78] Warning: Submerged Pond F-1 Primary device # 2 by 0.39'
[80] Warning: Exceeded Pond F-1 by 0.38' @ 12.47 hrs (2.00 cfs 4.671 af)
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 1.75" for 1 yr 24 hr event
Inflow =
5.58 cfs @
12.00 hrs, Volume= 0.301 of
Outflow =
2.07 cfs @
12.10 hrs, Volume= 0.301 af, Atten= 63%,
Lag= 5.9 min
Primary =
2.07 cfs @
12.10 hrs, Volume= 0.301 of
Secondary =
0.00 cfs @
0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind
method,
Time Span= 0.00-140.00 hrs, dt= 0.01 hrs / 3
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 477.39' @ 12.10 hrs
Surf.Area= 6,060 sf Storage= 17,815 cf (4,743 cf
above start)
Flood Elev= 480,00'
Surf.Area=
8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 7,196.6
min calculated for 0.000 of (0% of inflow)
Center -of -Mass det. time= 716.4
min ( 1,531.3 - 815.0 )
Volume _ Invert Avail.Storage Storage Description
#1 468,50'
36,464 cf Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area
Perim. Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet) _
_
(sq-ft)
468.50
350
114.0 0 0
350
469.00
468
122.0 204 204
511
469.50
594
130.0 265 469
684
470.00
728
138.0 330 799
867
471.00
1,020
154.0 870 1,669
1,266
472.00
1,345
170.0 1,179 2,847
1,710
473.00
1,701
186.0 1,520 4,367
2,197
474.00
2,088
202.0 1,891 6,258
2,727
475.00
2,508
218.0 2,295 8,553
3,302
476.00
2,960
234.0 2,731 11,284
3,920
476.50
4,230
274.0 1,788 13,072
5,542
477.00
5,700
314.0 2,473 15,545
7,420
477.20
5,917
319.7 1,162 16,707
7,714
478.00
6,549
334.0 4,984 21,691
8,502
479.00
7,383
352.0 6,962 28,653
9,543
480.00
8,248
370.0 7,812 36,464
10,639
Device_ Routing
Invert
Outlet Devices
#1 Primary
474.50'
20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0.500
Outlet Invert= 474.00' S= 0.0091 T Cc= 0.900
n= 0.025 Corrugated metal -
#2 Device 1
477.20'
30.0" Horiz. CMP Riser Pipe Limited to weir flow C= 0.600
#3 Device 1
476.50'
4.0" Vert. Water Quality Orifice C= 0.600
#4 Device 3
475.50'
1.0" Horiz. Hole In Orifice Limited to weir flow
C= 0.600
#5 Secondary
479.00'
10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40
1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64
2.64 2.63
32

Stormwater BMP SCS Type 11 24-hr 1 yr 24 hr Rainfall=2.83"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC Page 48
Primary OutFlow Max=2.07 cfs @ 12.10 hrs HW=477.39' (Free Discharge)
t1=CMP Barrel (Passes 2.07 cfs of 10.55 cfs potential flow)
2=CMP Riser Pipe (Weir Controls 2.04 cfs @ 1.41 fps)
tlWater Quality Orifice (Passes 0.02 cfs of 0.36 cfs potential flow)
=Hole In Orifice (Orifice Controls 0.02 cfs @ 4.53 fps)
e Scondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=476.50' (Free Discharge)
5=Emergency Spillway ( Controls 0.00 cfs)
33

M
Stormwater BMP SCS Type 1124-hr 2 yr 24 hr Rainfall=3.42"
Prepared by Darden Engineering Services Printed 7/22/2008
HvdroCADO 8.50 s/n 001751 © 2007 HvdroCAD Software Solutions LLC Pape 49
Summary for Pond F-1: Forebay
[87] Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 2.28" for 2 yr 24 hr event
Inflow = 8.46 cfs @ 11.96 hrs, Volume= 0.394 of
Outflow = 8.32 cfs @ 11.97 hrs, Volume= 0.394 af, Atten= 2%, Lag= 0.8 min
Primary - 8.32 cfs @ 11.97 hrs, Volume= 0.394 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs / 3
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.18' @ 11.97 hrs Surf.Area= 1,882 sf Storage= 4,849 cf (1,904 cf above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 110.9 min calculated for 0.326 of (83% of inflow)
Center -of -Mass det. time= 2.8 min ( 807.3 - 804.4 )
Volume Invert
Avail -Storage Storage
Description
#1 473.50'
9,154
cf Forebay (Irregular) Listed below (Recalc)
Elevation Surf.Area
Perim,
Inc.Store
Cum.Store Wet -Area
(feet)
(sq-ft)
(feet) (cubic -feet)
cubic -feet)
(sq-ft)
473.50
468
88.0
0
0
468
474.00
560
96.0
257
257
594
474.50
660
104.0
305
561
731
475.00
768
112.0
357
918
878
476.00
1,008
128.0
885
1,803
1,207
477.00
1,280
144.0
1,141
2,945
1,579
477.20
1,449
191.0
273
3,217
2,832
478.00
1,795
205.0
1,295
4,512
3,301
479.00
2,297
222.4
2,041
6,553
3,930
480.00
2,916
239.8
2,600
9,154
4,611
Device Routing
Invert_
Outlet Devices
#1 Primary
478.00'
30.0' long
x 1.0' breadth
Broad -Crested Rectangular Weir
Head (feet)
0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English)
2.69 2.72
2.75 2.85 2.98 3.08
3.20 3.28 3.31
3.30 3.31
3.32
#2 Primary
477.00'
2.00 cfs Exfiltration Thru
Rip Rap Berm when above invert
Primary OutFlow Max=8.30 cfs @ 11.97 hrs HW=478.18' TW=477.42' (Dynamic Tailwater)
11=13road-Crested Rectangular Weir (Weir Controls 6.30 cfs @ 1.15 fps)
2=Exfiltration Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
34

Stormwater BMP SCS Type It 24-hr 2 yr 24 hr Rainfall=3.42"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCADO 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC Page 50
Summary for Pond P-1: Wet Pond
[781 Warning: Submerged Pond F-1 Primary device # 2 by 0.53'
[801 Warning: Exceeded Pond F-1 by 0.38' @ 12.53 hrs (2.00 cfs 4.686 af)
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 2.28" for 2 yr 24 hr event
Inflow = 8.32 cfs @ 11.97 hrs, Volume= 0.394 of
Outflow - 4.99 cfs @ 12.04 hrs, Volume= 0.393 af, Atten= 40%, Lag= 4.3 min
Primary _ 4.99 cfs @ 12.04 hrs, Volume= 0.393 of
Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 477.53' @ 12.04 hrs Surf.Area= 6,177 sf Storage= 18,728 cf (5,656 cf above start)
Flood Elev= 480.00' Surf.Area= 8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 2,385.4 min calculated for 0.093 of (24% of inflow)
Center -of -Mass det. time= 555.5 min ( 1,362.8 - 807.3 )
Volume _
_#1
Invert Avail.Storage
Storage Description
468.50'
36,464 cf
Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area
Perim.
lnc.Store
Cum.Store
Wet.Area
feet
s -ft
feet
cubic -feet
cubic -feet
s -ft
468.50
350
114.0
0
0
350
469.00
468
122.0
204
204
511
469,50
594
130.0
265
469
684
470.00
728
138.0
330
799
867
471.00
1,020
154.0
870
1,669
1,266
472.00
1,345
170.0
1,179
2,847
1,710
473.00
1,701
186.0
1,520
4,367
2,197
474.00
2,088
202.0
1,891
6,258
2,727
475.00
2,508
218.0
2,295
8,553
3,302
476.00
2,960
234.0
2,731
11,284
3,920
476.50
4,230
274.0
1,788
13,072
5,542
477.00
5,700
314.0
2,473
15,545
7,420
477.20
5,917
319.7
1,162
16,707
7,714
478.00
6,549
334.0
4,984
21,691
8,502
479.00
7,383
352.0
6,962
28,653
9,543
480.00
8,248
370.0
7,812
36,464
10,639
Device Routing Invert Outlet Devices
#1
Primary
474.50'
20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0,500
Outlet Invert= 474.00' S= 0.0091 '1' Cc= 0.900
n= 0.025 Corrugated metal
#2
Device 1
477,20'
30.0" Horiz. CMP Riser Pipe Limited to weir flow C= 0.600
#3
Device 1
476.50'
4.0" Vert. Water Quality Orifice C= 0.600
#4
Device 3
475,50'
1.0" Horiz. Hole In Orifice Limited to weir flow C= 0.600
#5
Secondary
479.00'
10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
35

Stormwater BMP SCS Type 11 24-hr 2 yr 24 hr Rainfall=3.42"
Prepared by Darden Engineering Services Printed 7/22/2008
hlydroCADO.8.50 sln 001751 Q 2007 HydroCAD Software Solutions LLC Page 51
Primary OutFlow Max=4.98 cfs @ 12.04 hrs HW=477.53' (Free Discharge)
L1=CMP Barrel (Passes 4.98 cfs of 11.00 cfs potential flow)
2=CMP Riser Pipe (Weir Controls 4.95 cfs @ 1.89 fps)
Water Quality Orifice (Passes 0.03 cfs of 0.39 cfs potential flow)
4=Hole In Orifice (Orifice Controls 0.03 cfs @ 4.90 fps)
Secondary OutFiow Max=0.00 cfs @ 0.00 hrs HW=476.50' (Free Discharge)
t--5=Emergency Spillway ( Controls 0.00 cfs)
36

Stormwater BMP SCS Type 11 24-hr 10 yr 24 hr Rainfall=4.96"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 O 2007 HydroCAD Software Solutions LLC _ Page 52
Summary for Pond F-1: Forebay
[87] Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 3.73" for 10 yr 24 hr event
Inflow = 13.43 cfs @ . 11.96 hrs, Volume= 0.644 of
Outflow = 13.34 cfs @ 11.97 hrs, Volume= 0.644 af, Atten= 1 %, Lag= 0.5 min
Primary = 13.34 cfs @ 11.97 hrs, Volume= 0.644 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.27' @ 11.97 hrs Surf.Area= 1,924 sf Storage= 5,014 cf (2,069 cf above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 82.8 min calculated for 0.576 of (90% of inflow)
Center -of -Mass det. time= 2.6 min ( 793.2 - 790.6 )
Volume Invert Avail -Storage Storage Description
#1 473.50' 9,154 cf Forebay (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) (cubic -feet) (sq-ft)
473.50 468 88.0 0 0 468
474.00 560 96.0 257 257 594
474.50 660 104.0 305 561 731
475.00 768 112.0 357 918 878
476.00 1,008 128.0 885 1,803 1,207
477.00 1,280 144.0 1,141 2,945 1,579
477.20 1,449 191.0 273 3,217 2,832
478.00 1,795 205.0 1,295 4,512 3,301
479.00 2,297 222.4 2,041 6,553 3,930
480.00 2,916 239.8 2,600 9,154 4,611
Device Routing Invert Outlet Devices
#1 Primary 478.00' 30.0' long x 1.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1,20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31
3.30 3.31 3.32
#2 Primary 477.00' 2.00 cfs Exfiltration Thru Rip Rap Berm when above invert
Primary OutFlow Max=13.31 cfs @ 11.97 hrs HW=478.27' TW=477.71' (Dynamic Tailwater)
�1=Broad-Crested Rectangular Weir (Weir Controls 11.31 cfs @ 1.40 fps)
2=Exfiltration Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
37

Stormwater BMP SCS Type /l 24-hr 10 yr 24 hr Rainfall=4.96"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC Page 53
Summary for Pond P-1: Wet Pond
[78] Warning: Submerged Pond F-1 Primary device # 2 by 0.76'
[80] Warning: Exceeded Pond F-1 by 0.38' @ 12.71 hrs (2.00 cfs 4.808 af)
Inflow Area =
2.070 ac, 48.31 % Impervious, Inflow Depth = 3.73" for 10 yr 24 hr event
Inflow =
13.34 cfs @ 11.97 hrs, Volume= 0.644 of
Outflow =
10.90 cfs @ 12.01 hrs, Volume= 0.643 af, Atten= 18%,
Lag= 2.7 min
Primary =
10.90 cfs @ 12.01 hrs, Volume= 0.643 of
Secondary =
0.00 cfs @ 0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind
method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs / 3
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 477.76' @ 12.01 hrs Surf.Area= 6,359 sf Storage= 20,166 cf (7,095 cf above start)
Flood Elev= 480.00'
Surf.Area= 8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 834.0 min calculated for 0.343 of (53% of inflow)
Center -of -Mass det. time= 352.6 min ( 1,145.8 - 793.2 )
Volume Invert Avail.Stora e Storage Description
#1 468.50' 36,464 cf Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft) (feet) (cubic -feet) (cubic -feet)
sq-ft)
468.50
350 114.0 0 0
350
469.00
468 122.0 204 204
511
469.50
594 130.0 265 469
684
470.00
728 138.0 330 799
867
471.00
1,020 154.0 870 1,669
1,266
472.00
1,345 170.0 1,179 2,847
1,710
473.00
1,701 186.0 1,520 4,367
2,197
474.00
2,088 202.0 1,891 6,258
2,727
475.00
2,508 218.0 2,295 8,553
3,302
476.00
2,960 234.0 2,731 11,284
3,920
476.50
4,230 274.0 1,788 13,072
5,542
477.00
5,700 314.0 2,473 15,545
7,420
477.20
5,917 319.7 1,162 16,707
7,714
478.00
6,549 334.0 4,984 21,691
8,502
479.00
7,383 352.0 6,962 28,653
9,543
480.00
8,248 370.0 7,812 36,464
10,639
Device Routing
Invert Outlet Devices
#1 Primary
474.50' 20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0.500
Outlet Invert= 474.00' S= 0.0091 T Cc= 0.900
n= 0.025 Corrugated metal
#2 Device 1
477.20' 30.0" Horiz. CMP Riser Pipe Limited to weir flow C= 0.60D
#3 Device 1
476.50' 4.0" Vert. Water Quality Orifice C= 0.600
#4 Device 3
475.50' 1.0" Horiz. Hole In Orifice Limited to weir flow
C= 0.600
#5 Secondary
479.00' 10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40
1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64
2.64 2.63
38

Stormwater BMP SCS Type 11 24-hr 10 yr 24 hr Rainfall=4.96"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001.751 © 2007 HydroCAD Software Solutions LLC --Page 54
Primary OutFlow Max=10.89 cfs @ 12.01 hrs HW=477.76' (Free Discharge)
L1=CMP Barrel (Passes 10.89 cfs of 11.65 cfs potential flow)
2=CMP Riser Pipe (Weir Controls 10.86 cfs @ 2.45 fps)
Water Quality Orifice (Passes 0.03 cfs of 0.44 cfs potential flow)
4=Hole In Orifice (Orifice Controls 0.03 cfs @ 5.41 fps)
econdary OutFlow Max=0.00 cfs @ 0.00 hrs HW=476.50' (Free Discharge)
=Emergency Spillway ( Controls 0.00 cfs)
39

Stormwater BMP SCS Type 11 24-hr 25 yr 24 hr Rainfall=5.89"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751_O 2007 HydroCAD Software Solutions LLC . _ Page 55
Summary for Pond F-1: Forebay
[87] Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 4.63" for 25 yr 24 hr event
Inflow = 16.41 cfs @ 11.96 hrs, Volume= 0.798 of
Outflow = 16.31 cfs @ 11.97 hrs, Volume= 0.798 af, Atten= 1 %, Lag= 0.5 min
Primary = 16.31 cfs @ 11.97 hrs, Volume= 0.798 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.31' @ 11.97 hrs Surf.Area= 1,946 sf Storage= 5,100 cf (2,156 cf above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 72.9 min calculated for 0.731 of (92% of inflow)
Center -of -Mass det. time= 2.6 min ( 787.2 - 784.6 )
Volume
Invert Avail.Stora e
Storage Description
#1
473.50'
9,154 cf
Forebay (Irregular) Listed
below (Recalc)
Elevation
Surf.Area
Perim.
Inc.Store
Cum.Store
Wet.Area
feet
s -ft
feet
cubic -feet
cubic -feet
s -ft
473.50
468
88.0
0
0
468
474.00
560
96.0
257
257
594
474.50
660
104.0
305
561
731
475.00
768
112.0
357
918
878
476.00
1,008
128.0
885
1,803
1,207
477.00
1,280
144.0
1,141
2,945
1,579
477.20
1,449
191.0
273
3,217
2,832
478.00
1,795
205.0
1,295
4,512
3,301
479.00
2,297
222.4
2,041
6,553
3,930
480.00
2,916
239.8
2,600
9,154
4,611
Device - Routinq Invert Outlet Devices
#1 Primary 478.00' 30.0' long x 1.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31
3.30 3.31 3.32
#2 Primary 477.00' 2.00 cfs Exfiltration Thru Rip Rap Berm when above invert
Primary OutFlow Max=16.27 cfs @ 11.97 hrs HW=478.31' TW=477.81' (Dynamic Tailwater)
�__1=Broad-Crested Rectangular Weir (Weir Controls 14.27 cfs @ 1.52 fps)
2=Exfiltration Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
HIJ

Stormwater BMP SCS Type 11 24-hr 25 yr 24 hr Rainfall=5.89"
Prepared by Darden Engineering Services Printed 7/22/2008
H droCADO 8.50 sln 001751 CO 2007 H droCAD Software Solutions LLC Page 56
Summary for Pond P-1: Wet Pond
[78] Warning: Submerged Pond F-1 Primary device # 2 by 0.90'
[80] Warning: Exceeded Pond F-1 by 0.38' @ 12.82 hrs (2.00 cfs 4.901 af)
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 4.63" for 25 yr 24 hr event
Inflow =
16.31 cfs @ 11.97 hrs, Volume= 0.798 of
Outflow =
12.03 cfs @ 12.02 hrs, Volume= 0.798 af, Atten= 26%,
Lag= 3.4 min
Primary =
12.03 cfs @ 12.02 hrs, Volume= 0.798 of
Secondary =
0.00 cfs @
0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind
method,
Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 477.90' @ 12.02 hrs
Surf.Area= 6,470 sf Storage= 21,054 cf (7,982 cf
above start)
Flood Elev= 480.00'
Surf.Area=
8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 614.4
min calculated for 0.498 of (62% of inflow)
Center -of -Mass det. time= 290.9
min ( 1,078.1 - 787.2 )
Volume Invert Avail.Stora a Storage Description
#1 468.50' 36,464 cf Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet)
(sq-ft)
(feet) (cubic -feet) (cubic -feet)
(sq-ft}
468.50
350
114.0 0 0
350
469.00
468
122.0 204 204
511
469.50
594
130.0 265 469
684
470.00
728
138.0 330 799
867
471.00
1,020
154.0 870 1,669
1,266
472.00
1,345
170.0 1,179 2,847
1,710
473.00
1,701
186.0 1,520 4,367
2,197
474.00
2,088
202.0 1,891 6,258
2,727
475.00
2,508
218.0 2,295 8,553
3,302
476.00
2,960
234.0 2,731 11,284
3,920
476.50
4,230
274.0 1,788 13,072
5,542
477.00
5,700
314.0 2,473 15,545
7,420
477.20
5,917
319.7 1,162 16,707
7,714
478.00
6,549
334.0 4,984 21,691
8,502
479.00
7,383
352.0 6,962 28,653
9,543
480.00
8,248
370.0 7,812 36,464
10,639
Device Routing
_ Invert
Outlet Devices
#1 Primary
474.50'
20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0.500
Outlet Invert= 474.00' S= 0.0091 7 Cc= 0.900
n= 0.025 Corrugated metal
#2 Device 1
477.20'
30.0" Horiz. CMP Riser Pipe Limited to weir Flow C= 0.600
#3 Device 1
476.50'
4.0" Vert. Water Quality Orifice C= 0.600
#4 Device 3
475.50'
1.0" Horiz. Hole In Orifice Limited to weir flow
C= 0.600
#5 Secondary
479.00'
10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40
1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64
2.64 2.63
41

Stormwater BMP SCS Type II 24-hr 25 yr 24 hr Rainfall=5.89"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC Page 57
Primary OutFlow Max=12.03 cfs @ 12.02 hrs HW=477.90' (Free Discharge)
t1=CMP Barrel (Barrel Controls 12.03 cfs @ 5.51 fps)
2=CMP Riser Pipe (Passes < 15.10 cfs potential flow)
Water Quality Orifice (Passes < 0.47 cfs potential flow)
4=Hole In Orifice (Passes < 0.03 cfs potential flow)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=47$.50' (Free Discharge)
�5=Emergency Spillway ( Controls 0.00 cfs)
42

Stormwater BMP SCS Type II 24-hr 50 yr 24 hr Rainfall=6.63"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC Page 58
Summary for Pond F-1: Forebay
[87) Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 5.35" for 50
yr 24 hr event
Inflow = 18.77 cfs @ 11.96 hrs, Volume= 0.922 of
Outflow = 18.67 cfs @ 11.96 hrs, Volume= 0.922 af, Atten= 1%,
Lag= 0.4 min
Primary = 18.67 cfs @ 11.96 hrs, Volume= 0.922 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 1.3
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.35' @ 11.96 hrs Surf.Area= 1,962 sf Storage= 5,165 cf (2,220 cf above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 66.8 min calculated for 0.855 of (93% of inflow)
Center -of -Mass det. time= 2.5 min ( 783.2 - 780.7 )
Volume Invert Avail.Stora e Storage Description
#1 473.50' 9,154 cf Forebay (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store
Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) (cubic -feet)
(sc�-ft-ft)
473.50 468 88.0 0 0
468
474.00 560 96.0 257 257
594
474.50 660 104.0 305 561
731
475.00 768 112.0 357 918
878
476.00 1,008 128.0 885 1,803
1,207
477.00 1,280 144.0 1,141 2,945
1,579
477.20 1,449 191.0 273 3,217
2,832
478.00 1,795 205.0 1,295 4,512
3,301
479.00 2,297 222.4 2,041 6,553
3,930
480.00 2,916 239.8 2,600 9,154
4,611
Device Routinq Invert Outlet Devices
#1 Primary 478,00' 30.0' long x 1.0' breadth Broad -Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31
3.30 3.31 3.32
#2 Primary 477.00' 2.00 cfs Exfiltration Thru Rip Rap Berm when above invert
Primary OutFlow Max=18.62 cfs @ 11.96 hrs HW=478.35' TW=477.91' (Dynamic Tailwater)
t1=Broad-Crested Rectangular Weir (Weir Controls 16.62 cfs @ 1.60 fps)
2=Exfiltration Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
43

Stormwater BMP SCS Type 1l 24-hr 50 yr 24 hr Rainfall=6.63"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 s/n 001751 © 2007 HydroCAD Software Solutions LLC _ Page 59
Summary for Pond P-1: Wet Pond
[78] Warning: Submerged Pond F-1 Primary device # 2 by 1.05'
[80] Warning: Exceeded Pond F-1 by 0.38' @ 12.91 hrs (2.00 cfs 4.979 af)
Inflow Area = 2.070 ac, 48.31% Impervious, Inflow Depth = 5.35" for 50 yr 24 hr event
Inflow =
18.67 cfs @
11.96 hrs,
Volume=
0.922 of
Outflow =
12.43 cfs @
12.03 hrs,
Volume=
0.922 af, Atten= 33%, Lag= 3.9 min
Primary -
12.43 cfs @
12.03 hrs,
Volume=
0.922 of
Secondary =
0.00 cfs @
0.00 hrs,
Volume=
0.000 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 478.05' @ 12.03 hrs Surf.Area= 6,592 sf Storage= 22,036 cf (8,964 cf above start)
Flood Elev= 480.00' Surf.Area= 8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 515.6 min calculated for 0.622 of (67% of inflow)
Center -of -Mass det. time= 256.2 min ( 1,039.3 - 783.2 )
Volume
Invert Avail.Storage
Storage Description
#1
468.50'
36,464 cf
Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area
Perim.
Inc.Store
Cum.Store
Wet.Area
(feet)
-- (sq-ft)
(feet)
(cubic -feet)
(cubic -feet)
(st-ft
468.50
350
114.0
0
0
350
469.00
468
122.0
204
204
511
469.50
594
130.0
265
469
684
470.00
728
138.0
330
799
867
471.00
1,020
154.0
870
1,669
1,266
472.00
1,345
170.0
1,179
2,847
1,710
473.00
1,701
186.0
1,520
4,367
2,197
474.00
2,088
202.0
1,891
6,258
2,727
475.00
2,508
218.0
2,295
8,553
3,302
476.00
2,960
234.0
2,731
11,284
3,920
476.50
4,230
274.0
1,788
13,072
5,542
477.00
5,700
314.0
2,473
15,545
7,420
477.20
5,917
319.7
1,162
16,707
7,714
478.00
6,549
334.0
4,984
21,691
8,502
479.00
7,383
352.0
6,962
28,653
9,543
480.00
8,248
370.0
7,812
36,464
10,639
Device Routinq Invert Outlet Devices
#1
Primary
474.50'
20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0.500
Outlet Invert= 474.00' S= 0.0091 T Cc= 0.900
n= 0.025 Corrugated metal
#2
Device 1
477.20'
30.0" Horiz. CMP Riser Pipe Limited to weir flow C= 0.600
#3
Device 1
476.50'
4.0" Vert. Water Quality Orifice C= 0.600
#4
Device 3
475.50'
1.0" Horiz. Hole In Orifice Limited to weir flow C= 0.600
#5
Secondary
479.00'
10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64 2.64 2.63
44

StOrmwater BMP SCS Type 1124-hr 50 yr 24 hr Rainfall=6.63"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCADO 8.50 sln 001751 _ © 2007 HydroCAD Software Solutions LLC Page 60
Primary OutFlow Max=12.43 cfs @ 12.03 hrs HW=478.05' (Free Discharge)
1--1=CMP Barrel (Barrel Controls 12.43 cfs @ 5.70 fps)
T2=CMP Riser Pipe (Passes < 20.21 cfs potential flow)
--I=Water Quality Orifice (Passes < 0.49 cfs potential flow)
t4=Hole In Orifice (Passes < 0.03 cfs potential flow)
secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=476.50' (Free Discharge)
5=Emergency Spillway ( Controls 0.00 cfs)
45

Stormwater BMP SCS Type Il 24-hr 100 yr 24 hr Rainfall=7.40"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 © 2007 HydroCAD Software Solutions LLC Page 61.
Summary for Pond F-1: Forebay
[871 Warning: Oscillations may require Finer Routing or smaller dt
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 6.10" for 100 yr 24 hr event
Inflow = 21.21 cfs @ 11.96 hrs, Volume= 1.052 of
Outflow = 21.08 cfs @ 11.96 hrs, Volume= 1.052 af, Atten= 1 %, Lag= 0.2 min
Primary = 21.08 cfs @ 11.96 hrs, Volume= 1.052 of
Routing by Dyn-Stor-Ind method, Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 477.00' Surf.Area= 1,280 sf Storage= 2,945 cf
Peak Elev= 478.38' @ 11.97 hrs Surf.Area= 1,979 sf Storage = 5,231 cf (2,287 cf above start)
Flood Elev= 480.00' Surf.Area= 2,916 sf Storage= 9,154 cf (6,209 cf above start)
Plug -Flow detention time= 61.5 min calculated for 0.984 of (94% of inflow)
Center -of -Mass det. time= 2.4 min ( 779.6 - 777.2 )
Volume Invert Avail.Storage Storage Description
#1 473.50' 9,154 cf Forebay (irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum -Store Wet.Area
(feet) (sq-ft) (feet) (cubic -feet) _ (cubic -feet) (sq-ft)
473.50 468 88.0 0 0 468
474.00 560 96.0 257 257 594
474.50 660 104.0 305 561 731
475.00 768 112.0 357 918 878
476.00 1,008 128.0 885 1,803 1,207
477.00 1,280 144.0 1,141 2,945 1,579
477.20 1,449 191.0 273 3,217 2,832
478.00 1,795 205.0 1,295 4,512 3,301
479.00 2,297 222.4 2,041 6,553 3,930
480.00 2,916 239.8 2,600 9,154 4,611
Device Routing Invert Outlet Devices
#1 Primary 478,00' 30.0' long x 1.0' breadth Broad -Crested Rectangular Weir _
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00
Coef. (English) 2.69 2.72 2.75 2.85 2.98 3.08 3.20 3.28 3.31
3.30 3.31 3.32
#2 Primary 477,00' 2.00 cfs Exfiltration Thru Rip Rap Berm when above invert
Primary OutFlow Max=21.07 cfs @ 11.96 hrs HW=478.38' TW=478.01' (Dynamic Tailwater)
�__2=Exfiltration
1=Broad-Crested Rectangular Weir (Weir Controls 19.07 cfs @ 1.67 fps)
Thru Rip Rap Berm (Exfiltration Controls 2.00 cfs)
46

Stormwater BMP SCS Type I! 24-hr 100 yr 24 hr Rainfall=7.40"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCADO 8.50 sln 001751 © 2007 H ryd.roCAD Software Solutions LLC Pape 62
Summary for Pond P-1: Wet Pond
[78] Warning: Submerged Pond F-1 Primary device # 2 by 1.21'
[80] Warning: Exceeded Pond F-1 by 0.38' @ 13.00 hrs (2.00 cfs 5.056 af)
Inflow Area = 2.070 ac, 48.31 % Impervious, Inflow Depth = 6.10" for 100 yr 24 hr event
Inflow =
21.08 cfs @ 11.96 hrs, Volume= 1.052 of
Outflow =
12.84 cfs @ 12.03
hrs, Volume= 1.051 af, Atten= 39%,
Lag= 4.4 min
Primary =
12.84 cfs @ 12.03
hrs, Volume= 1.051 of
Secondary =
0.00 cfs @
0.00 hrs, Volume= 0.000 of
Routing by Dyn-Stor-Ind
method,
Time Span= 0.00-140.00 hrs, dt= 0.01 hrs 13
Starting Elev= 476.50' Surf.Area= 4,230 sf Storage= 13,072 cf
Peak Elev= 478.21' @ 12.03 hrs
Surf.Area= 6,723 sf Storage= 23,110 cf (10,038 cf above start)
Flood Elev= 480.00'
Surf.Area=
8,248 sf Storage= 36,464 cf (23,393 cf above start)
Plug -Flow detention time= 446.2
min calculated for 0.751 of (71 % of inflow)
Center -of -Mass det. time= 228.4
min ( 1,008.0 - 779.6 )
Volume Invert Avail.Storage Storage Description
#1 468.50' 36,464 cf Wetpond Dimensions (Irregular)Listed below (Recalc)
Elevation
Surf.Area Perim. Inc.Store Cum.Store Wet.Area
feet
s -ft
feet cubic -feet cubic -feet
s -ft
468.50
350
114.0 0 0
350
469.00
468
122.0 204 204
511
469.50
594
130.0 265 469
684
470.00
728
138.0 330 799
867
471.00
1,020
154.0 870 1,669
1,266
472.00
1,345
170.0 1,179 2,847
1,710
473.00
1,701
186.0 1,520 4,367
2,197
474.00
2,088
202.0 1,891 6,258
2,727
475.00
2,508
218.0 2,295 8,553
3,302
476.00
2,960
234.0 2,731 11,284
3,920
476.50
4,230
274.0 1,788 13,072
5,542
477.00
5,700
314,0 2,473 15,545
7,420
477.20
5,917
319.7 1,162 16,707
7,714
478.00
6,549
334.0 4,984 21,691
8,502
479.00
7,383
352.0 6,962 28,653
9,543
480.00
8,248
370.0 7,812 36,464
10,639
Device Routing
Invert
Outlet Devices_
_
#1 Primary
474.50'
20.0" x 55.0' long CMP Barrel
CMP, square edge headwall, Ke= 0.500
Outlet Invert= 474.00' S= 0.0091 T Cc= 0.900
n= 0.025 Corrugated metal
#2 Device 1
477.20'
30.0" Horiz. CMP Riser Pipe Limited to weir flow C= 0.600
#3 Device 1
476.50'
4.0" Vert. Water Quality Orifice C= 0.600
#4 Device 3
475,50'
1.0" Horiz. Hole In Orifice Limited to weir flow
C= 0.600
#5 Secondary
479.00'
10.0' long x 19.0' breadth Emergency Spillway
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.68 2.70 2.70 2.64 2.63 2.64
2.64 2.63
47

0
Stormwater BMP SCS Type 1124-hr 100 yr 24 hr Rainfall=7.40"
Prepared by Darden Engineering Services Printed 7/22/2008
HydroCAD® 8.50 sln 001751 0 2007 HydroCAD Software Solutions LLC Page 63
Primary OutFlow Max=12.84 cfs @ 12.03 hrs HW=478.21' (Free Discharge)
L1=CMP Barrel (Barrel Controls 12.84 cfs @ 5.89 fps)
12=CMP Riser Pipe (Passes < 23.79 cfs potential flow)
Water Quality Orifice (Passes < 0.52 cfs potential flow)
4=Hole In Orifice (Passes < 0.03 cfs potential flow)
Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=476.50' (Free Discharge)
L 5=Emergency Spillway ( Controls 0.00 cfs)
48