20080956 Ver 1_More Info Received_20080905 (2)

Environmental Consultants, PA
Road • Raleigh, North Carolina 27614 • Phone: [phone] • Fax: [phone]
www.SandEC.com
September 5, 2008
S&EC Project # 6878.P1
DWQ No. # 08-0956
Division of Water Quality
Attn: Ian McMillan/Annette Lucas
2321 Crabtree Boulevard
Suite 250
Raleigh, NC 27604
DWQ- Raleigh Regional Office
Attn: Natalie Landry
3800 Barrett Drive
Raleigh, NC 27609
Re: Reply to the Division of Water Quality's 7/18/08 and 7/30/2008 request for
additional information
Bellemont Point
Chatham County, North Carolina
Dear Mr. McMillan, Ms. Lucas and Ms. Landry:
This letter is in response to your lettesr dated July 18, 2008 and July 30, 2008 which
requested additional information for the proposed Bellemont Point development. The
following restates your questions/comments and is then followed by our response.
Additional Information Requested on July 18, 2008
1. Please provide the Required Items Checklists (second page of the
Wet Detention Basin Supplement Forms), as well as all of the required
items. The BMP Supplement Forms are available on the DWQ website
at: http://h2o.enr.state.nc.us/su/bmpforms.htm. The DWQ cannot
review the BMP designs until the checklists and all the required items
are submitted.
Please find the attached Required Items Checklist.
Additional Information Requested on July 30, 2008
P°? i Sd d
VE LANDS
The DWQ will not authorize, with concurrence from the USA CE, the
proposed stormwater management facility within the onsite
intermittent stream. Please relocate this stormwater management
Charlotte Office:
236 LePhillip Court, Suite C
Concord, NC 28025
Phone: [phone]
Fax: [phone]
Greensboro Office: .
3817-E Lawndale Drive
Greensboro, NC 27455
Phone: [phone]
Fax: [phone]
facility appropriately outside of the onsite intermittent stream and
resubmit your revised PCN application and site plans.
Please find the attached revised site plan with drainage areas detailing the removal of the
stormwater pond from the intermittent stream channel. We have also included all of the
appropriate supplemental forms and design pages for the newly relocated stormwater
management pond for your review.
2. Additionally, the DWQ will require restoration of the impacted onsite
intermittent stream referenced in the previous comment. Please
submit a restoration plan for this stream that complies with DWQ
stream restoration guidelines and resubmit your revised PCN
application and site plans.
S&EC has been engaged by Ricky Spoon Builders to provide the USACE and the NC
DWQ with a Stream Restoration plan for "Stream 1" and "Stream 2."
This plan is currently being developed and will be submitted to both the USACE and
the NC DWQ for approval under separate cover within the next 30 days.
Please feel free to call me if you require any further explanation.
Sincerely,
Nic e J. Thomso
Regulatory Specialist
Attachments: 5 copies of Response letter
5 copies of DWQ Request For More Information Letters (dated 7/18 and 7/30 respectively)
5 copies of Required Items Checklist for Wet Pond #1
5 copies of Stormwater Management Permit for Drainage Basins 1 through 6
5 copies of Wet Pond #6 Drawdown calculations
5 copies of Wet Pond #6 Hydrograph Return Calculations
5 copies of Wet Pond #6 Impervious Calculations
5 copies of Wet Pond #6 Inflow Calculations
5 copies of Wet Pond #6 Outlet Pad
5 copies of Wet Pond #6 Riser Float
5 copies of Wet Pond #6 O&M Agreement
5 copies of Wet Pond #6 Supplemental Worksheets
CC: Ms. Natalie Landry (NC DWQ Raleigh Regional Office) - all attachments listed above
O? WG illi
Ro
J
S
ecretary
W
am G.
ss
r.,
`
C? North Carolina Department of Environment and Natural Resources
> y
p
Coleen H. Sullins, Director
Division of Water Quality
July 18, 2008
DWQ Project # 08-0956
Chatham County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Ricky Spoon
Ricky Spoon Builders JUL -" w ?n0p
2475 Redbud
Pittsboro, NC 27312
Subject Property: Bellemont Point
Ut to Roberson Creek [030604, 16-38-(3), WSIV, NSW]
REQUEST FOR MORE INFORMATION
Dear Mr. Spoon:
On June 11, 2008, the Division of Water Quality (DWQ) received your application dated June
10, 2008, to fill or otherwise impact 0.007 acres of 404/wetland and 313 linear feet of perennial
stream (145 linear feet permanent impact, and 163 linear feet temporary impact), and 101 linear
feet intermittent stream impact to construct the proposed residential development at the site. The
DWQ has determined that your application was incomplete and/or provided inaccurate
information as discussed below. The DWQ will require additional information in order to
process your application to impact protected wetlands and/or streams on the subject property.
Therefore, unless we receive five copies of the additional information requested below, we will
place this project on hold as incomplete until we receive this additional information. If we do
not receive the requested information, your project will be formally returned as incomplete.
Please provide the following information so that we may continue to review your project.
Additional Information Requested:
Please provide the Required Items Checklists (second page of the Wet Detention Basin
Supplement Forms), as well as all of the required items. The BMP Supplement Forms
are available on the DWQ web site at: http://h2o.enr.state.nc.us/su/bmp forms.htm. The
DWQ cannot review the BMP designs until the checklists and all of the required items
are submitted.
Please submit this information within 30 calendar days of the date of this letter. If we do not
receive this requested information within 30 calendar days of the date of this letter, your project
will be withdrawn and you will need to reapply with a new application and a new fee.
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.nc.us/ncwetlands
None hCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/1 0% Post Consumer Paper
Ricky Spoon Builders
Page 2 of 2
July 18, 2008
This letter only addresses the application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application
are not authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian
McMillan at 919-733-1786 if you have any questions regarding or would like to set up a meeting
to discuss this matter.
ey,
Sin l
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/ijm
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office .
File Copy
Central Files
Nicole Thomson, S&EC, P.A., 11010 Raven Ridge Road, Raleigh, NC 27614
Filename: 080956Bellemon tPoi n t(Ch ath a m)On_Hold
10 ?G William G. Ross Jr., Secretary
Cl) North Carolina Department of Environment and Natural Resources
D ,C Coleen H. Sullins, Director
Division of Water Quality
July 30, 2008
DWQ Project # 08-0956
Chatham County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED _
Mr. Ricky Spoon
Ricky Spoon Builders
2475 Redbud
Pittsboro, NC 27312
AUG 01. 2000

Subject Property: Bellemont Point
Ut to Roberson Creek [030604, 16-38-(3), WSIV, NSW]
REQUEST FOR MORE INFORMATION
Dear Mr. Spoon:
On June 11, 2008, the Division of Water Quality (DWQ) received your application dated June
10, 2008, to fill or otherwise impact 0.007 acres of 404/wetland and 313 linear feet of perennial
stream (145 linear feet permanent impact, and 163 linear feet temporary impact), and 101 linear
feet intermittent stream impact to construct the proposed residential development at the site. The
DWQ has determined that your application was incomplete and/or provided inaccurate
information as discussed below. The DWQ will require additional information in order to
process your application to impact protected wetlands and/or streams on the subject property.
Therefore, unless we receive five copies of the additional information requested below, we will
place this project on hold as incomplete until we receive this additional information. If we do
not receive the requested information, your project will be formally returned as incomplete.
Please provide the following information so that we may continue to review your project.
Additional Information Requested:
1. The DWQ will not authorize, with concurrence from the USACE, the proposed
stormwater management facility within the onsite intermittent stream. Please relocate
this stormwater management facility appropriately outside of the onsite intermittent
stream and resubmit your revised PCN application and site plans.
2. Additionally, the DWQ will require restoration of the impacted onsite intermittent stream
referenced in the previous comment. Please submit a restoration plan for this stream that
complies with DWQ stream restoration guidelines and resubmit your revised PCN
application and site plans.
No ehCarolma
QtlltYl??if
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: http://h2o.enr.state.ilc.us/ncwetlands
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper
Ricky Spoon Builders
Page 2 of 2
July 30, 2008
Please submit this information within 30 calendar days of the date of this letter. If we do not
receive this requested information within 30 calendar days of the date of this letter, your project
will be withdrawn and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application
are not authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian
McMillan at 919-733-1786 if you have any questions regarding or would like to set up a meeting
to discuss this matter.
Sin ely,
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/i m
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Nicole Thomson, S&EC, P.A., 11010 Raven Ridge Road, Raleigh, NC 27614
Filename: 080956Bellemon tPoint(Cha tha m)On_Hold2
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result In a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
Indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach Justification.
Page 1 Plan
Initials Sheet No.
AJF 1. Plans (1' - 50' or larger) of the entire site showing:
2 - Design at ultimate build-out,
2 - Off-site drainage (if applicable),
2 and calculations - Delineated drainage basins (include Rational C coefficient per basin),
2.4. and calculations - Basin dimensions,
2.4. and calculations - Pretreatment system,
2, 4, and calculations - High flow bypass system,
2 - Maintenance access,
2 - Proposed drainage easement and public right of way (ROW),
2.4, and calculations - Overflow device, and
2 - Boundaries of drainage easement.
AJF 2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
4 - Outlet structure with trash rack or similar,
2 - Maintenance access,
2, 4, and calculations - Permanent pool dimensions,
2. 4, and calculations - Fonebay and main pond with hardened emergency spillway,
4 - Basin cross-section,
4_ Vegetation specification for planting shelf, and
N/A - Filter strip.
N/A 3. Section view of the dry detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
AJF 4 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes& accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment until
the entiredrainage area is stabilized.
AJF calculations 7. The supporting calculations.
AJF attached S. A copy of the signed and notarized operation and maintenance (0&M) agreement.
N/A 9. A copy of the deed restrictions (if required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 3 of 1
Permit
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page I Plan
Initials Sheet No.
AJF I. Plans (1' - 50' or larger) of the entire site showing:
2 - Design at ultimate build-out,
2 - Off-site drainage (if applicable),
2 and calculations - Delineated drainage basins (include Rational C coefficient per basin),
2, 4, and calculations -Basin dimensions,
2.4, and calculations - Pretreatment system,
2. 4. and calculations - High flow bypass system,
2 - Maintenance access,
2 - Proposed drainage easement and public right of way (ROW),
2, 4, and calculations - Overflow device, and
2 - Boundaries of drainage easement.
AJF 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
4 Outlet structure with trash rack or similar,
2 - Maintenance access,
2, 4, and calculations Permanent pool dimensions,
2.4. and calculations Forebay and main pond with hardened emergency spillway,
4 - Basin cross-section,
4 Vegetation specification for planting shelf, and
N/A Filter strip.
N/A 3. Section view of the dry detention basin (1' = 20' or larger) showing:
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
- Inlet and outlet structures.
AJF 4 4. If the basin Is used for sediment and erosion control during construction, clean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 - 6. A construction sequence that shows how the wet detention basin will be protected from sediment until
the entire drainage area is stabilized.
AJF calculations 7. The supporting calculations.
AJF attached 8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
N/A 9. A copy of the deed restrictions (if required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part Ill. Required Items Checklist, Page 1 of 1
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page 1 Plan
Initials Sheet No.
AJF i. Plans (1' - 50' or larger) of the entire site showing:
2 - Design at ultimate build-out,
2 - Off-site drainage (if applicable),
2 and calculations - Delineated drainage basins (include Rational C coefficient per basin),
2.4. and calculations - Basin dimensions,
2.4. and calculations - Pretreatment system,
2.4. and calculations - High flow bypass system,
2 Maintenance access,
2 - Proposed drainage easement and public right of way (ROUT(),
2.4. and calculations - Overflow device, and
2 - Boundaries of drainage easement.
AJF 2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
4 Outlet structure with trash rack or similar,
2 - Maintenance access,
2.4. and calculations Permanent pool dimensions,
2, 4, and calculations - Forebay and main pond with hardened emergency spillway,
4 - - Basin cross-section, _ =y
4 - Vegetation specification for planting shelf, and
WA Filter strip.
N/A 3. Section view of the dry detention basin (1' = 20' or larger) showing:
Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures,
AJF 4 4. If the basin is used for sediment and erosion control during construction, dean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment until
the entire drainage area is stabilized,
AJF calculations 7. The supporting calculations.
AJF attached 8. A copy of the signed and notarized operation and maintenance (O&M) agreement,
N/A 9. A copy of the deed restrictions (if required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils information
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1
Permit No.
(to be provided by DWQ)
qg- pp
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page 1 Plan
Initials Sheet No.
AJF 1. Plans (1' - 50' or larger) of the entire site showing:
2 and 3 Design at ultimate build-out,
2 and 3 - Off-site drainage (if applicable),
2.3. and calculations - Delineated drainage basins (include Rational C coefficient per basin),
2, 3.4. and calculations Basin dimensions
,
2.3.4. and calculations Pretreatment system
,
2, 3. 4. and calculations High flow bypass system
,
2 and 3 Maintenance access,
2 and 3 - Proposed drainage easement and public right of way (ROW),
2, 3. 4. and calculations Overflow device
and
,
2 and 3 Boundaries of drainage easement.
AJF 2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
4 Outlet structure with trash rack or similar,
2 and 3 Maintenance access,
2.3.4, and calculations Permanent pool dimensions
,
2 3. 4. and calculations Forebay and main pond with hardened emergency spillway
,
4 Basin cross-section,
4 Vegetation specification for planting shelf, and
N Filter strip.
N/A 3, Section view of the dry detention basin (1' = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
AJF 4 4. If the basin is used for sediment and erosion control during construction, dean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment until
the entire drainage area is stabilized.
AJF calculations 7. The supporting calculations.
AJF attached 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
N/A 9. A copy of the deed restrictions (if required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils information.
Form SW441-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page 1 of 1
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional Information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page ! Plan
Initials Sheet No.
AJF 1. Plans (1' - 50' or larger) of the entire site showing:
2 - Design at ultimate build-out,
2 - Off-site drainage (if applicable),
2 and calculations - Delineated drainage basins (include Rational C coefficient per basin),
2.4. and calculations - Basin dimensions,
2.4, and calculations - Pretreatment system,
2.4. and calculations - High flow bypass system,
2 - Maintenance access,
2 - Proposed drainage easement and public right of way (ROW),
2.4. and calculations - Overflow device, and
2 - Boundaries of drainage easement.
AJF 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
4 - Outlet structure with trash rack or similar,
2 - Maintenance access,
2.4, and calculations Permanent pool dimensions,
2.4, and calculations Forebay and main pond with hardened emergency spillway,
4 Basin cross-section,
4 - Vegetation specification for planting shelf, and
N/A - Filter strip.
N/A 3. Section view of the dry detention basin (1' = 20' or larger) showing:
Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
AJF 4 4. If the basin is used for sediment and erosion control during construction, dean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment unfit
the entire drainage area is stabilized.
AJF calculations 7. The supporting calculations.
AJF attached 8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
N/A 9. A copy of the deed restrictions (if required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required ftems Checklist, Page 1 of t
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page ( Plan
Initials Sheet No.
AJF 1. Plans (1" - 50' or larger) of the entire site showing:
3 Design at ultimate build-out,
3 - Off-site drainage (if applicable),
3 and calculations - Delineated drainage basins (include Rational C coefficient per basin),
3.4. and calculations Basin dimensions,
3, 4, and calculations - Pretreatment system,
3, 4, and calculations High flow bypass system,
3 Maintenance access,
3 Proposed drainage easement and public right of way (ROW),
3 4, and calculations Overflow device, and
3 Boundaries of drainage easement.
AJF 2. Partial plan (1' = 30' or larger) and details for the wet detention basin showing:
4 - Outlet structure with trash rack or similar,
3 - Maintenance access,
3, 4, and calculations - Permanent pool dimensions,
3.4. and calculations - Forebay and main pond with hardened emergency spillway,
4 - Basin cross-section,
4 - Vegetation specification for planting shelf, and
N/A - Filter strip.
N/A 3. Section view of the dry detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
- Inlet and outlet structures.
AJF 4 4. If the basin Is used for sediment and erosion control during construction, clean out of the basin is
specified on the plans prior to use as a wet detention basin.
AJF calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for
forebay, to verify volume provided.
AJF 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment until
the entire drainage area is stabilized.
AJF calculations 7. The supporting calculations.
AJF attached 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
N/A 9. A copy of the deed restrictions (If required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests.
County soil maps are not an acceptable source of soils Information.
Form SW401-Wet Detention Basin-Rev.4 Part 111. Required Items Checklist, Page 1 of 1
`T
State of North Carolina's ` DO
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FO ,E0a 1`11? ?.'
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Ricky Spoon Builders, Inc.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Ricky Spoon
3. Mailing Address for person listed in item 2 above:
2475 Redbud
City:Pittsboro State:NC Zip:27312
Phone: ( ) Fax:
Email:
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Bellemont Point Subdivision and Bellemont Station South
5. Location of Project (street address):
US 15-501 N
City:Pittsboro County:Chatham
6. Directions to project (from nearest major intersection):
Zip:27312
7. Latitude:35° 44' 24.9" N Longitude:79° 09'46.1' W of project
8. Contact person who can answer questions about the project:
Name:Joe Faulkner Telephone Number: (919 ) 367-8790
Email:joe®cegroupinc.com
U. PERMIT INFORMATION:
1. Specify whether project is (check one): ®New []Renewal []Modification
Form SVJU-101 . Version 03.27.08 Page 1 of 4
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
[]Low Density ®High Density []Redevelop []General Permit []Universal SMP []Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
?CAMA Major ®Sedimentation/Erosion Control ®404/401 Permit ®NPDES Stormwater
in. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Subsurface drainage s stem routed to wet ponds
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: acres 4. Total Wetlands Area: acres
5. 100' Wide Strip of Wetland Area: acres (not applicable if no wetlands exist on site)
6. Total Project Area**: acres
7. Project Built Upon Area:
8. How many drainage areas does the project have?12
9. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For hi density projects, com fete the table with one drainage area for each engineered stormwater device.
...Mt ' •a'?::is:::• c:_. ?::::::- ?:
?..'?..:?. ...i«..... .__•-_ ..._ ... .... ........__.._-.-.. .._.-..
Receiving Stream Name ._.-.:;::•;; :;;:•^_.y.?y..J'.?,)? .ra.= _•.._c_-..z;;:...
......_.....__._SC:7?Y?h.'-f c«^."...'R :x--x"S:^ ^».^^._.: - -?" a- _.°:. '^•Q." __4:My=x=c•- `
::4_..._. ? _ %+?'i:.•i??.».»_.?..-.._.r?
Stream Class & Index No.
Total Drainage Area (sf) 322,344 362,854
On-site Drainage Area (so 322,344 362,854
Off-site Drainage Area (so
Existing Impervious* Area (sf)
Proposed impervious*Area (sf) 225,640 253,954
% Impervious* Area (total) 70 70

.... nous».?nrfaeewA~ .__ -•
On site Buildings (sf)
=_._.,_
- -- .. .._ -,?,,??, -
--
On site Streets (sf)
On-site Parking (sf)
On-site Sidewalks (sf)
Other on-site (sf) 225,640 253,954
Off-site (sf)
Total (so: 225,640 253,954

* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 0327.08 Page 2 of 4
Basin Information Drainage Area #3 Drainage Area #4
Receiving Stream Name
Stream Class & Index No.
Total Drainage Areas 818,928 261,795
On-Site Drainage Area s 760,122 261,795
Off-Site Drainage areas 58,806
Existing Impervious Area (so
Proposed Impervious Area (s 405,108 119,790
% Impervious Area (total) 48.9 45.7

Impervious Surface Area Drainage Area #3 Draina a Area #4
On-Site Building 5 65,340 39,790
On-Site Streets (so
On-Site Parkin s
On-Site Sidewalks so
Other on-site s
Off-sites 339,768 80,000
Total (so 405,108 119,790
Basin Information Drainage Area #5 Drainage Area #6
Receiving Stream Name
Stream Class & Index No.
Total Drainage Area so 933,055 640,767
OnSiteDrainage Area s 896,900 640,767
Off-Site Drainage area so 36,155
E)dsbn Impervious Area s
Proposed Impervious Area (so 500,940 308,840
% Impervious Area (total) 53.7 47.7

Impervious Surface Area Draina a Area #5 Drainage Area #6
On-Site Building s
On-Site Streets s 132,939 56,840
On-Site Parkin s
On-Site Sidewalks s
Other on-site s
Off-site so 368,000 252,000
(so 1 500,939 308,840
Basin Information Drainage Area #7 Drainage Area #8
Receiving Stream Name
Stream Class & Index No.
Total Drainage Area (s 455,637 197,326
On-Site Drainage Areas 455,637 197,326
Off-Site Drainage area s
.Existing Impervious Area
Proposed Impervious Area (sf) 104,108 40,075
% Impervious Area (total) 22.8 20.3

-Im ervious Surface Area Drainage Area #7 Draina a Area #8
On-She Building (so
On-Site Streets so
On-Site Parkin s
On-Site Sidewalks (so
Other on-site s
Off-site so 104,000 40,000
Totals 104,000 40,000
a
Basin Information Drainage Area #9 Drainage Area #10
Receivin Stream Name
Stream Class & Index No.
Total Drainage Areas 130,244 84,070
On-Site Drainage Areas 130,244 84,070
Off-Site Drainage area s
Existln Impervious Area s
Proposed Impervious Area (sf) 23,958 20,037
% Impervious Area total 18.4 23.8

Impervious Surface Area Drainage Area #9 Drainage Area #10
On-Site Building (sf)
On-Site Streets s
On-Site Parkin sf
On-Site Sidewalks s
Other on-site s
Off-site (sf) 24,000 20,000
Totals 24,000 20,000
Basin Information Drainage Area #11 Drainage Area #12
Receiving Stream Name
Stream Class & Index No.
Total Drainage Area sf) 119,354 36,154
On-Site Drainage Area (sf) 119,365 36,154
Off-Site Drainage area s
Existing Impervious Area (sf)
Proposed Impervious Area sf) 27,878 3,920
% Impervious Area total 23.4 10.8

Impervious Surface Area -Drainage Area #11 Drainage Area #12
On-Site Building (S?
On-Site Streets sf)
On-Site Parkin s
On-Site Sidewalks s
Other on-site s
Off-sites 28,000 4,000
Total sf) 28,000 4,000
Permit No.
(to be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Paget Plan
Initials Sheet No.
_MJN _2 & 3_ 1, Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
Pretreatment system,
High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way.(ROW),
- Overflow device, and
- Boundaries of drainage easement.
_MJN 4 2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
- Filter strip.
NIA 3. Section view of the dry detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
_MJN 4 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
_MJN Calculations 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
_MJN 4 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
_MJN Calculations 7. The supporting calculations.
8. A copy of the signed and notarized operation and maintenance (O&M) agreement
9. A copy of the deed restrictions (f required).
N/A 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.4 Part III. Required Items Checklist, Page t of 1
10. How was the off-site impervious area listed above derived?No off-site impervious based upon recent aerial
information
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, size and the allowable built-upon area for each lot must be provided as an attachment. Forms can be
downloaded from h=://h2o.enr.state.nc.us/su/bmp forms.htm - deed restrictions.
Form DRPC-1 High Density Commercial Subdivisions
Form DRPC-2 High Density Developments with Outparcels
Form DRPC-3 High Density Residential Subdivisions
Form DRPC-4 Low Density Commercial Subdivisions
Form DRPC-5 Low Density Residential Subdivisions
Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms. Forms can be downloaded from hW2://h2o.enr.state.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Low Density Supplement
Curb Outlet System Supplement
Off-Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Form SWU-101 Version 03.27.08 Page 3 of 4
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at http://h2o.enr.state.nc.us/su/msi maps.htm)
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
ptnjable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including:
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off-site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):CE Group Inc.
Mailing Address:11000 Regency Parkway, Suite 410
City:Cary State:NC Zip:27518
Phone: (919 } 367-8790 Fax: (919 } 367-8791
Email ioeQcegroupinc.com
VIII. APPLICANT'S CERTIFICATION
I, (print or hjpe name of person listed in General Information, item 2) Rick-11 5j2oon
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H.1000.
Signature:
Date:
Form SWU-101 Version 03.27.08 Page 4 of4
Chatham County GIS Mapping Website
Page 1 of 1
Chatham County GIS Mapping Website
Layers
( Q Addressing
e Q Real Property
E] + Cemeteries
MR Parcels
ED Misc Parcel Features
Parcel Dimensions
' Easement
Q LotNumber
O L.? Tax Map Index
Q [ Aerial Photos
ER Q Water Resources
> Q Census
p Q Boundaries
M Q jj County Utilities
III R ]5w Soils
Chatham Countv Home
as
w;= Measure Tools
Click the desired Tool and trace on Map. Use the
[CONTROL KEY+ CLICK) to Finish.
mmE} m y+timmtirmmnnwmmim y,

Point Data:
ti•
-wnn ?rt?Y
r-'
:. Fasting= 1951683 Feet
Northing= 724384 Feet
Longitude: -79.16281 West
3 Latitude: 35.74024 North
Lon (DMS): 79-9-46.1 West
Lat (DMS): 35-44-24.9 North
...............
Click Point, Line or Area Button
above for another measurement.
Properties
Value
AKPAR 72984
BILLADD2 ** NO DATA **
BILLADD3 ** NO DATA **
BILLADD4 - NO DATA -
BILLING AD 2475 REDBUD ST
BILLING-CI PITTSBORO
BILLING NA RICKY SPOON
- BUILDERS INC
BILLING ST
_ NC
BILLING
_ZI 27312
BILL 2 ** NO DATA**
BILL 73 ** NO DATA
COLRMD ** NO DATA **
DEED ACRES 150.260000
DEED-BOOK 960
DEED NAME RICKY SPOON
- BUILDERS INC

_
DEED PAGE 0491
DEED
YEAR
' 2007

_
FIRE
NST 106
FTR-CODE PARCEL
IMPROV FMV 0
LAND FMV 1702570
LEGAL DESC L5-1-2CR
OWNER ID 59523
PHYS ADDRE US 15 501 N
PIN 9752-13-4754.000
PIN MAP BL
_ 13
PIN
_MAP_ 9752
Plk-SUBMAP DO
PIN SUBPAR
- - NO DATA **
PIN
PARCE 4754
PLAT-BOOK
'- 2007
PLAT
PAGE 0401
TAX YEAR 2008
TWNSHP COD5
t
€s
!3
t? /y
;2310

J IX 1952999, Y: 724839 (Foot US) 11 feature selected 11:11387.19
http://Www.chathamgis.com/mapguide/ChathamGISWeb/ 6/6/2008
nmldm-. 1 H r 1 'D ID to 1D tj l ro<3 10 N ;e[HC
31O wm0 1 O 4PZ I a,ON mm W I bHy tjH Hto Hto
wr WOI H Y p 1 0000 m1 ;V MH mH J r) vi X1-3
tjH N Cl.I P tj 1 nH7. m,-3 N •p`pa mm
H OmH 1 r -3 ?o i I WHH nm k
Z 0J S•. . I 0, N I d1 1 rwy ;aw •d Hr
\O NIDca I ro yy 0 1 X 1 t7H HO m mH P M
mq \\H I b T!N z 1 0000 *- M. z ro;o o .0 Z••?
J.3 &'DU I W r td 1 •P •P 4. 11 ro + *H• W Ho bi 0y HN
o% o w m 1 n 1 %D %0 1D %D p I >t b• tj H Q 0 r In
mW mw I m Y m r rrrr G], aH• O O Z
` IP w 1 r nY 0H 1 W I It CI- 7. Ao
d1 • tj ,4 1 'p 0 OW I t s m m w 010)
rn H Oro 1 C m o C S+ H C
,P O H ?:, to td y I M En 1 M M y H
m I L, I to cn to m y1 1 4 N Y W r
- n b m I Q r r \\ •f, o
J n -- I ylvm I NN NN mr r yNO n m
wb n I roam b H I Jwww r y nJ+n H b
w z W 1 .44 1 n k 1 U z H -\ m
J7.1 to I , Id I NNNN 'y+ I tj HNN CO
,P W m l + t~ W L. I 0000 y l Coo 'd H
- x1 , + \p 1 0000 W 1 L• m O O r Z
m m n n z N w w J b A J H n
0t7 x 1 0ri 1 1 r H
O b + u 1 m 1 [ w w
%00 Z I m zmmn b1 m kk wz
IPO a 1 1 brold0 r l C kn
co m , t MLlV .
l
to
,roH
to 0 I r r t W H H w m l w m m n N
ktn b I r e bHHH 1 k 3M HJ
lD O I JJr r .b I z Z H I m y W

ro J
S I
O O y
M v I
z
1
y m
•1' •y 1
z
m
k p H a?s
t'+ ro o r
23
w y I N Nz No tj 1 /4 m I m q NO WrWO•:

1
. 0
0•
1
y 1
H
r 1 :y .
a D" m n:x
M
N I I v1 en N 10 I tj W I G1 3 z ,
bHUb
O , J J\ N Ui H I W O I S y m r H?
o m I 00 In J k 1 m g I w m x tai 4
J W I J 1 tj m l O H tjO m0
Pd I z• z ro Wobz;sk
a < 0 H x e m x x•:s
O H + C r I 1 o b n?\•
r n d r b ?+ ty 0 r road . ;.x_ n
W r Z< I WOOD H t7 Q r?r0 x
O tjm HHH m W Ina0C3E b
Q :d W m 0= m m 10 w tj I W N EWr H
H O w at b r Pd to to m G m to Y• \ '_?•,.k'' x
co b r Y0 b w,d,'U 7y ',d co dHf62+]rob
H Ci n H Hm Z S L, t, W n N bw l0O oX
u 0 x o W tj O H m p m n 0 MW O
W 3 ro to A7 m m x7 r Z ',i7 W ERR Iv n
;d m m H PI H o k w 0
n m O W W x H o m r m xl
H z C tj a ro tj H W V, Ad y H H
H H m ro x > m \ N z kk>1
k to x H W :u y x N o m
W o z n O m o o Nn
r z o H m M H o J oytj
3 I H m mk x J oxlm
H m O NlD mtjro
00 m r tj w orn b
x I IP m IC 0 0 ;U
d I - ~ J H
O o a^ 1 u1 b H 3
< o , N 31 w W
x I In o 1 w z
I H I - C+ m N o o H
1 o r I o z, CO W A ,n
1 o O 1 o H, p m o w
n O H r r
y o <p r 1 a
O o m, W
H y, Z
1 b 1 b+ H
I C m + 3 1 H
H I ro. naj pz tj0 ro
1 r • N 1 1 y O r w H: H

I
IfJ
O
do
,
b I
H (z
•et: H
m Z
I rr?j a I W H x H m
O 1 0 H O w :d
JJ? 1 0 c1 oz O H
I O O H O 1 In Z i "•d0 d nH
1 NN 3. H 1 O H I kx* H tj tD

In to W H o .p , 0 1 m
J J O 00
O
N
00.4 H r I m ro r In +
W p f 1 W H O ID H O
i r H I M W .•d x I '? O O\ UI "4• O
I O I HHHH I t' I W N C
r• ro nnnn J w y µ
xxxx ro n r W
I zo I k,Ck k I '•d x H H
I tj 1 0, o E
,P
w 0
I I mmmm W, ro k n J
1 ro bH 1 rorororo W I m r to
I 3 tl O 1 0000 tj , ?f a W ?
r < 4H 1 0000 I H
O I Z Z Z Z Z 1 K \ n ro ro
1 • O I b I M H .T1 .b
I , W WWM ml VI H OQ
I , C."cY00 m, a k G=M
I , H H H H In Sk
I N Y Y n 1 r r r r O ?
I O -` Q I DDdtj r H
I o JJ 'dW 1 mmmW i w to
I W OJ 00 Z Pd 1 ,dW Sd" I w m N
1 00 NN <W I co mto m 1 .q OM
r vl cn < -- z I 1 ro t7 0
1 ` b to N H I HHHH I b H A
JJr ?? zzzz I m m
1 to to q 00 nnnn I DJ H
I N N M I 1 w
H
n
H
Permit No.
(to be provided by DWQ)
of wn.rg9
• ` 0 ?G
MENR.
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must.be filled out printed and submitted.
The Required Items Checklist (Part 110 must be printed, filled out and submitted along with all of the required information.
Project name
Contact person
Phone number
Date
Drainage area number
Site Characteristics
Drainage area
Impervious area
% impervious
Design rainfall depth
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity: l-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
z..
:741]
59 fiz
70.00 %
fe
ft3
in
. 33,906 0? ? ft
18,115.06 {t3
25{88300? fC'
M-E 3,00: in

0 25 _ (unitless)
-Q 55 (uniftess)
410 ==i in/hr
12.50
ft3lsec
2120 ft'Isec
8.70 ft sec
_. 500 00 ft
_?=5ff1I? -;--1ft
,_5.854$ ° ;tt
Form SW401-Wet Detention Basln-Rev.4 Parts I. & II. Design Summary, Page 1 of 2
Permit No.
(to be provided by DWQ)
_w
Volume and Surface Area Calculations
SNDA ratio (unittess)
Surface area at the bottom of shelf g 3?/ pp fe
Volume at the bottom of shelf 15,172 00 1. fe
Permanent pool, surface area required 7;736 00 __. f?
Permanent pool, surface area provided ;__..#555fltk =' = f OK
Permanent pool volume -°_< 22033OQ u='ft3
Average depth for SAMA tables 1.91 it Minimum of 3 ft required, Increase depth
Surface area at the top of shell _ ;;15?5t)tl--'
Volume at the top of shelf
g3g0 , {
Forebay volume _ ?S
Forebay % of permanent pool volume 28.63 % Must be approx. 20%, Adjust pond dimensions
Temporary pool, surface area provided = ' f3 6'1:6 tJt 2
Drawdown Calculations
Treatment volume drawdown time
Treatment volume discharge rate
Pre-development 1-yr, 24-hr discharge
Post-development 1-yr, 24-hr discharge
Additional Information
Diameter of orifice
Design TSS removal
Basin side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build-out?
Drain mechanism for maintenance or emergencies
410 ;days OK
ff/S OK
t2 ?.... fees OK
OK
OK
OK
OK
OK
OK
OK
OK
Need a recorded drainage easement
Required to capture all runoff from the ultimate build-out
Forth SW401-Wet Detention Basln•Rev.4 Parts I. & II. Design Summary, Page 2 of 2
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation 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 should 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 1.4 inches (or 1.5 inches if in a
Coastal County). Records of operation 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: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent. Remove the trash/debris.
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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How 1 will rernediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
swale 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 problems 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
prevent future erosion problems.
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 optimal 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 necessary.
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 BUT.
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 SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BW element:. Potential problem: How I will remediate the problem:
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 Re air or replace 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 505 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 505 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 504
Sediment Removal
501 i
-----------------
ft Min.
Sediment
Storage
Pool
?- - - - - - Sediment Removal Elevation 501 Volume
- ------------ -----
Bottom
FOREBAY
Bottom Elevation 500 1 1-ft
MAIN POND
Storage
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4
Permit Number:
(to be provided by DIWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible parry.
Project name:Bellemont Point & Bellemont Station South
BMP drainage area number:
Print name:Ricky Spoon
Address:2475 Redbud Street
Phone:
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I,
a Notary Public for the State of
, County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4
Permit No.
(to be provided by o WQ)
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be fitted out printed and submitted.
The Requh ad Items Checklist (Part 10) must be printed, filled out and submitted along with all of the required information.
Project name
Contact person
Phone number
Date
Drainage area number
Site Characteristics
o?p? waT?9pG
y
EO Y
Drainage area ?2
Impervious area =ftz
% impervious 69.92 %
Design rainfall depth - t 00 - in
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity. I-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
ft'
f?
_ -1-11- in
7,759.00 f?
" f 5t 1. =f?
7.90
in
(unitless)
(unitless)
in/hr
elsec
f?/sec
feisec
ft
ft
ft
ft
ft
ft
ft
Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 1 of 2
Permit No.
. (to be provided by DWQ)
Volume and Surface Area Calculations
SA/DA ratio -
-(unitless)
Surface area at the bottom of shelf - =5;tQE -;` ft
Volume at the bottom of shelf (3,?51],..: ;; f
Permanent pool, surface area required u423T00°:f

Permanent pool, surface area provided - - ----------
_$ 9 50QQ'ftz OK
Permanent pool volume 1g &1e_{e
Average depth for SAMA tables 2.19 ft Minimum of 3 ft required, Increase depth
Surface area at the top of shelf _ _u$95((?Q = ft2
Volume at the top of shelf ft3
Forebay volume
Forebay % of permanent pool volume 21.85 % OK
Temporary pool, surface area provided 8?BQQ ftz
Drawdown Calculations
Treatment volume drawdown time =days OK
Treatment volume discharge rats
Pre-development 1-yr, 24-hr discharge 1"E41 .40 OK
Post-development 1-yr, 24-hr discharge
77-
-72-_
Decrease discharge rate
Additional Information
Diameter of orifice -2 in
Design TSS removal
Basin side slopes - - =?=QQ= OK
Vegetated shelf slope = "[()_Oa r =!:I OK
Vegetated shelf width l(kt) w- ft OK
Length of flowpath to width ratio r 3`Q0 =; '' OK
Length to width ratio --' = 2rk -' :1 OK
Trash rack for overflow & orifice? _. Y (Y or N) OK
Freeboard provided 100 . - _ ° =I ft OK
Vegetated filter provided? (Y or N) OK
Recorded drainage easement provided? (Y or N) Need a recorded drainage easement
Capures all runoff at ultimate build-out? (Y or N) Required to capture all runoff from the ultimate build-out
mechanism for maintenance or emergencies - -
:?=GATE-ITAL'I?E`- _:_-
-:
- -- - - -
Form SW401-Wet Detention Basin-Rev.4 Parts I. & It. Design Summary, Page 2 oft
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation 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 BN T 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 should 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 operation 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: Potential roblem: How I will remediate the problem:
The entire BMP Trash/debris is resent Remove the trash/ debris.
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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
Swale 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 problems 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
prevent future erosion problems.
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 optimal 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 necessary,
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 SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
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 replace 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 536 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 536 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Sediment Removal
Bottom
V Permanent Pool Elevation 535
532 2min Pool
- --------------- Sediment Removal Elevation 532 Volume
531 -------------------------------------------- ------
Bottom Elevation 531 1-ft in
Storage Sedimei
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible parry.
Project name:Bellemont Point & Bellemont Station South
BMP drainage area number:2
Print name:Ricky Spoon
Title:
Address:2475 Redbud Street
Phone:
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , .. , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin 0&M-Rev.3 Page 4 of 4
Permit No.
(to be provided by DWQ)
o? war?eR
w./I???.fwq??a
¦,\I?I/?? 1=1 STORMWATER MANAGEMENT PERMIT APPLICATION FORM
4011 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
Project name
Contact person
Phone number
Date
Drainage area number
Site Characteristics
Drainage area
Impervious area ,3Q IL
% impervious 40.19 %
Design rainfall depth --1.00...... in
Storage Volume: Non-SRWaters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall Intensity:)-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation .
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
;ft3
,?3
...............
59i99?40, ,.?fta
_' ? 104=';9?${1(? :_-ft3
44,999.00 ft3
6x9$200 _<' ft3
:W in
_..,,_ =;1325 (unitless)
='.µ ?Qta(k ??- ? (unitless}
in/hr
G c := ft3/sec
61D ft3/sec
38.90 ft3/sec
_34OtI- = wft
..,., ?35t)D __ ft
.....- 537QD..?......_ ft
54.0 ----ft
Form SW401-Wet Detention Basin-Rev.4 Parts I. & It. Design Summary, Page 1 of 2
Permit No.
(to be pmWded by DWQ)

Volume and Surface Area Calculations
SAIDA ratio (unitless)
Surface area at the bottom of shelf =X5,558 00 - - ftz
Volume at the bottom of shelf 42:754 Q0 _ ft
Permanent pool, surface area required 241910€ ==ftz
Permanent pool, surface area provided _=-24;$pp { OK
Permanent pool volume 6Qk25.U0__ ff
Average depth for SA/DA tables 2.49 ft Minimum of 3 ft required, Increase depth
Surface area at the top of shelf =_ ;24195Q ftz
Volume at the top of shell 63131-Q0__ ft
Forebay volume __4,29.o,U ft'
Forebay % of permanent pool volume 23.77 % Must be approx. 20%, Adjust pond dimensions
Temporary pool, surface area provided _- ` 2119 dll s- ti
Drawdown Calculations
Treatment volume drawdown time S :=210 _ days OK
Treatment volume discharge rate
Pre-development 1-yr, 24-hr discharge
Post-development 1-yr, 24-hr discharge =--_17i? Decrease discharge rate
Additional Information
Diameter of orifice = °= =3 wu € in
Design TSS removal '--- 85 -- = ` °!o
Basin side slopes 3 00 .._._, = :1 OK
Vegetated shelf slope R G'6000,,:- :1 OK
Vegetated shelf width _-' -10.D0 ft OK
Length offlowpath to width ratio _3Ull; - _ :1 OK
Length to width ratio OK
Trash rack for overflow & orifice? (Y or N) OK
Freeboard provided ==w1 iTt„= _ ft OK
Vegetated filter provided? (Y or N) OK
Recorded drainage easement provided? =_- (Y or N) Need a recorded drainage easement
Cares all runoff at ultimate build-out?

pu " "° - - .
.
(Y or N)

Required to capture all runoff from the ultimate build-out
Drain mechanism for maintenance or emergencies - . TEVA ----- - -- __ - -_--z.-_- =-=---=-
Forth SW401-Wet Detentlan Basin-Rev.4 Parts I. & II. Design Summary, Page 2 of 2
Permit Number.
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation 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 should 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 operation 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: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent. Remove the trash/ debris.
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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
swale 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 problems 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
prevent future erosion problems.
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 optimal 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 necessary.
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 SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided byDWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
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 replace 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 543 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 543 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
ill in the blanks)
Sediment Removal
Bottom
Permanent Pool Elevation 542
539 Pe anen?
- ------------ -Volume
538 -ft Min.
Sediment
Storage
FOREBAY
Pool
------ Sediment Removal Elevation 539 ---------- volume
Bottom Elevation
MAIN POND
1-ft
Storage
Form SW401-Wet Detention Basin O&M-Rev.3 . Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Bellemont Point & Bellemont Station South
BMP drainage area number:
Print name:Rick Spoon
Title:
Address:2475 Redbud Street
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4
Permit
{to be provided by DWQ)
Q?O? W A 7F9OG
Ar % =' G
O C
1MENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submified.
The Required items Checklist (Part 111) must be printed, filled out and submitted along with aft of the required information.
Project name
Contact person
Phone number
Date
Drainage area number
Site Characteristics
Drainage area
Impervious area ===- ___^i
-
% impervious 45.76 %
Design rainfall depth 00
-€ - in
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity: )-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
PreiPost 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHWT elevation
Top of shelf elevation
Temporary pool elevation
- -=-_- ft3
---- - ft3
='°- =--=-- - =in
2f 27Q 00 ft3
11,687.00 ft'
=Z4f 3 QQ°` f3
L
in
(unitless)
(unitless)
in/hr
ft3lsec

?532Q A- ft
_ -=536OQ: ==ft
== 539:136:=- ft
Form SW401-Wet Detention Basin-Rev.4 Parts 1. &H. Design Summary, Page 1 of 2
Permit No.
(to be provided by DWQ)
Volume and Surface Area Calculations
SAIDA ratio (unitless)
Surface area at the bottom of shelf ' ' 3943UQ= fe
Volume at the bottom of shelf _ 1 eS;38 OQ__. fl3
Permanent pool, surface area required
Permanent pool, surface area provided _6ZEQ 00'._.__, OK
Permanent pool volume ° - I4Y9-- -ft'
Average depth for SAIDA tables 2.18 ft Minimum of 3 ft required, Increase depth
Surface area at the top of shelf -' 35 QQm fe
Volume at the top of shelf =' $ =-ft3
Forebay volume
Forebay % of permanent pool volume 25.10 Must be approx. 20%, Adjust pond dimensions
Temporary pool, surface area provided
Drawdown Calculations
Treatment volume drawdown time
days
OK
Treatment volume discharge rate - ' -" - `- ftsls
Pre development 1 yr, 24 hr discharge - =-6 9Q _ = ft9Is OK
Post-development 1-yr, 24-hr discharge ft3/s OK
Additional Information
Diameter of orifice = = = - __ in
Design TSS removal %
Basin side slopes 't16 :1 OK
Vegetated shelf slope -_ 1000 = = :1 OK
Vegetated shelf width AM -;--_ ft OK
Length of flowpath to width ratio :00 = ° :1 OK
Length to width ratio :1 OK
Trash rack for overflow & orifice? . "- - = (Y or N) OK
Freeboard provided = -_= 14t .- __ ft OK
Vegetated filter provided? (Y or N) OK
Recorded drainage easement provided? = = hl =_ (Y or N) Need a recorded drainage easement
Capures all runoff at ultimate build-out? _ _-- _N _=; (Y or N) Required to capture all runoff from the ultimate build-out
Drain mechanism for maintenance or emergencies :.: tT€:1tALVE : `- ' ' = - - - - -
Form SW401-Wet Detention Basm-Rev.4 Parts r. & II. Design Summary, Page 2 of 2 ,
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BNT. 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 should 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 minizmzed 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 operation 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: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent. Remove the trash debris.
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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is dogged. Unclog the pipe. Dispose of the
swale 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 problems 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
prevent future erosion problems.
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 optimal 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 necessary.
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 SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
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 replace 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 542 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 542 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 541
Sediment Removal ]EX. 537 1
---------------
Bottom Elevatio 536 I
FOREBAY
Pool
- - - - -Sediment Removal Elevation 537 Volume
--------------------------- ------
-/ Volume\
ft Min.
Sediment
Storage
Bottom Elevation
1-ft
MAINPOND
Storage
Form SW401-Wet Detention Basin O&M-Rev.3 . . Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Bellemont Point & Bellemont Station South
BMP drainage area number:4
Print name:Ricky Spoon
Title:
Address:2475 Redbud Street
Phone:
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4
Permit
(to be provided by DWQ)
ROM o?oF WarF9Qc
WE)
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along wifh all of the required informatr'on.
Project name
Contact person
Phone number
Date
Drainage area number

Site Characteristics -
Drainage area =_-v=1:,42 "_ .2
Impervious area "--9I1
% impervious 53.69 %
Design rainfall depth in
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity: )-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHAT elevation
Top of shelf elevation
Temporary pool elevation
_=............. ......
;fta
in
55"H_;. 9 ft3
y79 00 = {t'
41,654.00 ft3
M__ ft 3
in
=y '" ?2 (unitiess)
=05 (uniffess)
19aD.'- _fi3lsec
='=5(32Q' ft3/sec
31.10 ft3/sec
--------- -- --
s=r5340?f-? ??ft
53'?U€Ti-='_ft
X35 Qi--- ft
53
Form SW401-Wet Detention Basin-RevA Parts I. & II. Design Summary, Page 7 of 2
Permit No.
(to be provided by D WQ)
Volume and Surface Area Calculations
SAIDA ratio - =? t:t3"'--- (unilless)
Surface area at the bottom of shelf
493C1- f?
Volume at the bottom of shelf =`St?r{? -- ft3
Permanent pool, surface area required 17178Q flz
Permanent pool, surface area provided iOIS3 ift2 OK
Permanent pool volume 5343'Qa_ ::ft3
Average depth for SAIDA tables 2.43 it Minimum of 3 it required, Increase depth
Surface area at the top of shell = iQ9(3(f=s f
Volume at the top of shelf = _fi:55flQ " ft3
Forebay volume -___ 943_Q_ - _ft3
Forebay % of permanent pool volume 22.22 % Must be approx. 20%, Adjust pond dimensions

Temporary pool, surface area provided

ii 26731dEt _= fia
-
Drawdown Calculations
Treatment volume drawdown time -3 50 days OK
Treatment volume discharge rate 0 37 ft'Is
Pre-development 1-yr, 24-hr discharge
Post development 1-yr, 24-hr discharge Decrease discharge rate
Additional Information
Diameter of orifice -= !n
Design TSS removal .85
Basin side slopes OK
Vegetated shelf slope OK
Vegetated shelf width lo-QQ_ :ft OK
Length offlowpath to width ratio _...• .:300 , :1 OK
Length to width ratio :...._,:12 00 ._.:.,..:00 ._.:.,..:i:1 OK
Trash rack for overflow & orifice? Y (Y or N) OK
Freeboard provided ft OK
Vegetated filter provided? ., .,.. , , . (Y or N) OK
Recorded drainage easement provided? N . _ ,_ = (Y or N} Need a recorded drainage easement
Capures all runoff at ultimate build out? (Y or N) Required to capture all runoff from the ultimate build-out
Drain mechanism for maintenance or emergencies GAT€ VALVE;:;
:--_.
Form SW401-Wet Detention Basin-Rev.4 Parts I. & It. Design Summary, Page 2 of 2
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation 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):
0 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 should 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 operation 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: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent Remove the trash debris.
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 line and a
one-time fertilizer application.
Vegetation is too short or too Maintain vegetation at a height of
long. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
Permit Number.
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
swale 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 problems 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
revert future erosion problems.
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 optimal 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 necessary.
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 SW401-Wet Detention Basin O&M-Rev.3 Page-2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem. How I will remediate the problem:
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 replace 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 540 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 540 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
Vll in the blanks)
Permanent Pool Elevation 539
Sediment Removal
Bottom
536 Pe anen Pool
KL3olVolume
------------------------------ ------------ ------
$ Mir?.
Sediment Bottom Elevation S35 1-ft
Storage Sedime?
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Bellemont Point & Bellemont Station South
BAP-drainage area number:
Print name:Ricky Spoon
Title:
Address:2475 Redbud Street
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4
Permit No.
(to be provided by D1WQ)
OF W nrF,9
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out printed and submitted.
The Required Items Checkfrst (Part 119 must be printed, filled out and submitted along with all of the required inthnnafion.
Project name
Contact person
Phone number
Date
Drainage area number
Site Characteristics
Drainage area a flz
Impervious area -- ------ fe
% impervious 48.20 %
Design rainfall depth
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1 •yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity: l-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak tow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pod elevation
SHWT elevation
Top of. shelf elevation
Temporary pool elevation

38;:14100'' ft3
_pp
66 .7 ft3
28,606.00 f{3
33.89_L _ ft3
} 5'-= = (unitless)
(unitiess)
3:37::= inmr
`13 ?'?'-: ft3tsec
_-- elsec
20.30 ft3/sec

== _ 31CO ft
_ X35 OD ` fE
=53600 ='ft
-- -=w?ft
.53600 ._,_" ft
...... fl
Form SW401-Wet Detention Basin-Rev.4 Parts 1.8:11. Design Summary, Page 9 or2
Permit No.
(to be provided by OM)
Volume and Surface Area Calculations
SAIDA ratio !=(unifless)
Surface area at the bottom of shelf _ '11 fig
Volume at the bottom of shelf fts
Permanent pool, surface area required
Permanent pool, surface area provided `_tit 4Q µ f OK
Permanent pool volume 3t{4S4F43__
Average depth for SAIDA tables 2.12 ft Minimum of 3 ft required, Increase depth
Surface area at the top of shelf = ;_1$:. 331Q°=> ftz
Volume at the top of shell 5$b0 `= ft3
Forebay volume
Forebay % of permanent pool volume 24.82 % Must be approx. 20%, Adjust pond dimensions
Temporary pool, surface area provided _;N- F$40 Q if .
Drawdown Calculations
Treatment volume drawdown time 2:60 = `days OK
Treatment volume discharge rate
Pre-development 1-yr, 24-hr discharge ftsls OK
Post-development 1-yr, 24-hr discharge = :=_225 - fts/s Decrease discharge rate
Additional Information
Diameter of orifice = - _': in
Design TSS removal
Basin side slopes - _;?Q- ;1 OK
Vegetated shelf slope 4a0 OK
Vegetated shelf width =- ° EQ 0 =_ft OK
Length of flowpath to width ratio X00 :1 OK
Length to width ratio °<00. f :I OK
Trash rack for overflow & orifice?
(Y or N)
OK
Freeboard provided t 00__- = ft OK
Vegetated filter provided? (Y or N) OK
Recorded drainage easement provided? = = : (Y or N) Need a recorded drainage easement
Capures all runoff at ultimate build out? _= =i l+J ? {Y or N) Required to capture all runoff from the ultimate build-out

Dr
ain mechanism for maintenance or emergencies

€11Atit/l=i_"= ...---_---=

- =- =^
Form SW401-Wet Detention Basin-Rev,4 Parts 1. & II. Design Summary, Page 2 of 2
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation 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 should 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 operation 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: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent. Remove the trash/ debris.
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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 Of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
Swale 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 problems 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
prevent future erosion problems.
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 optimal 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 necessary.
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 SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
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 replace 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 541 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 541 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
rz I in the blanks)
Permanent Pool Elevation 540
Sediment Removal 537 7PQ en Poo l
-- ------------Volume Sediment Removal Elevation 537 Volume
Bottom Elevatio 536 Min.
----------------------------ediment Bottom Elevation 536 1-ft
Storage Sedimei
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin 0&M-Rev.3 Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:Bellemont Point & Bellemont Station South
BMP drainage area number:6
Print name:Ricky Spoon
Title:
Address:2475 Redbud Street
Phone:
Signature:
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, , a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this
day of , and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
My commission expires,
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

Contour Contour Incr. Accu S*e
Elev. Area Storage Storage (S) (Z)
(ft) (st) 40 (ef) (fl) in (S) In (Z) Z est
. .553.1.` 13;21] _ _ _
- 554.0 19,935 16,573 16,573 1.00 9.72 0.00 1.00
5545 21,030 10,246 26,819 3,50 10.20 0.41 1.50
-555,3 2Z 5g1 10,408 37,727 2.00 10.54 0.69 1.99
556.0 Y4,68] 23,631 61,358 3.00 11.02 1.10 2.98
557A 26,837 25359 87,117 4M 11.38 1.39 3.99
558.0 29,049 27,943 115,060 5.09 11.65 1.61 5.03
Repression Output:
b= 1.20235132 (X Variable CceM
Ks, 16,480
Stage - Storage Equation is of the fbm S = (Ks)(Z?
CheckofKsandb- S=Ksz
Storage Ares Stage
16,480 1
37,923 2
61,749 3
87,267 4
114,122 5

Barrel
n factor = 0.013
Dim of 0rifiee = 30.0 inches
Area ofOrifice, (Ao) = 4.91 sf
Ape 1-gth. (L) = 82.0 feet
Friction Coeff, (Kp) = 0.00786
Tw..ofBartel= 547.00 feet
Riam
Elcv. of Riser Crest= 554.50 feet
Circular:
Dim of Riser= 0 inches
Weir Length= _ feel
Area of Kiser = - sq. R.
Rectangular
LenglhofRiser= 5 feet ..
Width of Riser= 5 feet
Weir Length= 20 feet
Area of Riser = 25 sqK
P.1t1s(lecly 9pmn T11SLe lawn See GmAwmtMitatw?ACpulirrprne ?V. leV ... edaWO,n Pape t f4
BAeiilont Point- Wet'Pond #6
W.t-,Quahh O) ificc - - -
@=edl None
Area
Dia of Bwel + 2.73 inches 0.041247
Inv of Control Barrel 538
rms(x:?Gy sow A,-(-au. eaq:na bime?, rare aeaVwdalB??atlTPeMs_,
Paget as
TINE INFLOW STORAGE STAGE BARREL OUTFLOW
(min) . L2 III! RN Ll
0.00 0.00 26819,-?:- 1.50 0.2432 0.2432
5.00 0,00 26819 1.50 0.2432 0.2432
10.00 0.00 26746 1.50 0.2429 0.2429
15.00 0.00 26673 149 0.2426 0,2426
20.00 0,00 26600 1.49 0.2424 0.2424
25.00 0.00 26528 1.49 0.2421 0.2421
30.00 0.00 26455 148 0.2418 0.2418
35,00 0.00 26383 1.48 0.2415 0.2415
40.00 0.00 26310 1.48 0.2413 0,2413
45.00 0.00 26238 1.47 0.2410 02410
50.00 0.00 26165 1.47 0.2407 0.2407
55.00 0.00 26093 1.47 0.2404 0.2404
60,00 0,00 26021 1.46 0.2401 0.2401
6$.00 0.00 25949 1.46 0.2399 0.2399
70.00 0.00 25877 1.46 0.2396 0,2396
75.00 0.00 25805 1.45 0.2393 02393
80.00 0.00 25733 1.45 0.2390 0.2390
85.00 0.00 25662 1.45 0.2388 0.2388
90.00 0.00 25590 1.44 0.2385 0.2385
95.00 0,00 25518 1.44 02382 0.2382
100.00 0.00 25447 1.44 0,2379 0.2379
105.00 0.00 25376 1.43 0.2377 0.2377
110.00 0.00 25304 1.43 02374 0.2374
115.00 0.00 25233 1.43 0.2371 0.2371
120.00 0.00 25162 1.42 0.2368 0.2368
125.00 0.00 25091 1.42 0,2365 0.2365
130.00 0.00 25020 1.42 0.2363 01363
135.00 0.00 24949 1.41 02360 0.2360
140.00 0.00 24878 1.41 0.2357 0.2357
145.00 0.00 24808 1.41 02354 0.2354
150.00 0.00 24737 1,40 02351 0.2351
155.00 0.00 24666 1.40 0.2349 0.2349
160.00 0.00 24596 1.40 0.2346 0.2346
165.00 0.00 24526 1.39 0.2343 0.2343
170.00 0.00 24455 1.39 0.2340 0.2340
175.00 0.00 24385 1.39 0.2337 02337
180.00 0.00 24315 1.38 02335 02335
185.00 0.00 24245 1.38 0.2332 0.2332
190.00 0.00 24175 1.38 0.2329 0.2329
195.00 0.00 24105 1.37 0.2326 0.2326
200.00 0.00 24035 1.37 0.2323 0.2323
205.00 0.00 23966 137 0.2321 0.2321
210.00 0.00 23896 1,36 0.2318 0.2318
215.00 0.00 23826 1.36 0.2315 0.2315
220.00 0.00 23757 1.36 0.2312 0.2312
225.00 0.00 23688 1.35 0.2309 0.2309
230,00 0.00 23618 1.35 02307 0.2307
235.00 040 23549 1.35 D.2304 0.2304
240.00 0.00 23480 1.34 0.2301 0.2301
245.00 0.00 23411 1.34 0.2298 042298
250.00 0.00 23342 1.34 0.2295 0.2295
255.00 0.00 23273 1.33 0.2293 0.2293
260.00 0.00 23204 1.33 0.2290 0.2290
265,00 0.00 23136 1.33 0.2287 0.2287
270.00 000 23067 132 0.2284 0.2284
275.00 0.00 22999 1.32 0,2281 0.2281
280.00 0.00 22930 1.32 0.2278 01278
285.00 0.00 22862 131 0.2276 0.2276
290.00 0.00 22794 1.31 0.2273 0.2273
295,00 0.00 22725 131 0.2270 0.2270
300.00 0.00 22657 1.30 0.2267 0.2267
305.00 0.00 22569 1.30 0.2264 0.2264
310.00 0.00 22521 130 0.2261 0.2261
315.00 0.00 22453 1.29 0,2259 0.2259
320.00 0.00 22386 1.29 0.2256 0.2256
325.00 0.00 22318 1.29 0.2253 02253
330.00 0.00 22250 1.28 0.2250 0.2250
335.00 0,00 22183 1.28 0.2247 0.2247
340.00 - 0.00 22116 1.28 0.2244 0.2244
345.00 0.00 22048 1.27 0.2242 0.2242
350.00 0.00 21981 1.27 02239 01239
355.00 0.00 21914 127 02236 0.2236
360.00 DM 21847 1.26 0.2233 0.2233
365,00 0.00 21780 126 0.2230 0.2230
370.00 OM 21713 1.26 0.2227 0.2227
375.00 0.00 21646 115 0.2224 0.2224
380.00 0.00 21579 125 0.2222 0.2222
385.00 0.00 21513 1.25 0.2219 0.2219
390,00 0.00 21446 1.24 02216 01216
395.00 0.00 21380 1.24 0.2213 0,2213
400.00 0.00 21313 1.24 0.2210 0.2210
405.00 0.00 21247 1.24 0.2207 0.2207
410.00 0.00 21181 1.23 0.2204 0.2204
415.00 0.00 21115 1.23 01202 0.2202
420.00 D.00 21048 1.23 0,2199 0.2199
425.00 0.00 20983 1.22 0.2196 01196
430.00 0.00 20917 1.22 02193 0.2193
435.00 0.00 20851 1.22 0.2190 0.2190
440.00 0.00 20785 111 0.2187 0.2187
445.00 0.00 20720 1.21 0,2184 0.2184
45040 0.00 20654 121 0.2182 0.2182
455.00 0.00 20589 1,20 0.2179 0.2179
460.00 0.00 20523 1.20 0.2176 02176
465.00 0.00 20458 120 0.2173 0,2173
vinstxarsoea.n?wce (sax aeocon.U:rwf a?sveti mewvnd. xeaaa mnmash ae...a Pape 304

3075.00 0.00 40 0.01 0.0162 0.0162
3080.00 0.00 35 0.01 0.0153 0.0153
3085.00 0.00 30 0.01 0,0144 0.0144
3090.00 0.00 26 0.00 0.0135 0.0135
309100 0.00 22 0.00 0.0126 0,0126
3100.00 0.00 18 0.00 0,0116 0.0116
3105.00 0.00 14 0.00 0.0106 0.0106
3110.00 0.00 11 0.00 0.0096 0.0096
3115.00 0.00 8 0.00 0,0085 0.0085
3120.00 0.00 6 0.00 0.0073 0.0073
3125,00 0.00 4 0.00 0.0060 0.0060
3130.00 0.00. 2 0.00 0.0045 0.0045
3135.00 0.00 0 0.00 0.0026 0.0026
3[40,00 0.00 0 #NUM! #"Jum? #NUMI
:. 5233 ..houm 2 2.'days
:Pond draias completely dnt:n at m,tc 3140 +mnule or 22 deys
P?+tec Relnaoean tn+sa a«n ana cam+mme?poc+'.wx.-k1 -?tPS,d.xaPme we+e 6 -ft Page 4 of4

Table of Contents
Pond 6 rev 20080821.gpw
Hydraflow Hydrographs by Intelisolve Friday, Aug 22 2008, 10:55 AM
Hydrograph Return Period Recap ................................................................... 1
1 -Year
Summary Report .............................................................................................................. 2
Hydrograph Reports ........................................................................................................ 3
Hydrograph No. 2, Reservoir, <no description> ............................................................. 3
Pond Report .............................................................................................................. 4
10 -Year
Summary Report .............................................................................................................. 5
Hydrograph Reports ........................................................................................................ 6
Hydrograph No. 2, Reservoir, <no description> ............................................................. 6
Pond Report .............................................................................................................. 7
100 - Year
Summary Report .............................................................................................................. 8
Hydrograph Reports ........................................................................................................ 9
Hydrograph No. 2, Reservoir, <no description> ............................................................. 9
Pond Report ............................................................................................................ 10
Hydrograph Return Period Recap
Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph
No. type
(origin) Hyd(s)
1-Yr
2-Yr
3-Yr
5-Yr
10-Yr
25-Yr
50-Yr
100-Yr description
1
2 Manual
Reservoir ---
1 42.87
30.09 - --
--- - -
- - --
- -- 68.99
57.82 -----
---- -- -
------ 91.65
80.83 <no description>
<no description>
Proj. file: Pond 6 rev 20080821.gpw Friday, Aug 22 2008
Hydraflow Hydrographs by Intelisolve
2
Hydrograph Summary Report
Hyd.
No. Hydrograp
type
(origin) Peak
flow
(cfs) Time
interval
(min) Time to
peak
(min) Volume

(cuft) Inflow
hyd(s) Maximum
elevation
(ft) Maximum
storage
(cult) Hydrograph
description
1 Manual 42.87 3 24 85,102 -- ---- ------ <no description>
2 Reservoir 30.09 3 33 84,960 1 555.08 39,353 <no description>
Pond 6 rev 20080821.gpw Return Period: 1 Year Friday, Aug 22 2008
Hydraflow Hydrographs by Intelisolve
Hydrograph Plot
3
Hydraflow Hydrographs by lntelisolve Friday, Aug 22 2008, 10:55 AM
Hyd. No. 2
<no description>
Hydrograph type = Reservoir Peak discharge = 30.09 cfs
Storm frequency = 1 yrs Time interval = 3 min
Inflow hyd. No. = 1 Max. Elevation = 555.08 ft
Reservoir name = Pond 6 Max. Storage = 39,353 cuft
Storage Indication method used.
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00 '
0.0 0.3 0.5 0.8
Hyd No. 2 -
Hydrograph Volume = 84,960 cult
<no descriptions
Hyd. No. 2 --1 Yr
1.0
Hyd No. 1
1.3 1.5 1.8 2.0 2.3 2.5
Q (cfs)
50.00
40.00
30.00
20.00
10.00
-..1- 0.00
2.8
Time (hrs)
Pond Report,
4
Hydraflow Hydrographs by Intelisolve Friday, Aug 22 2008, 10:55 AM
Pond No. 1 - Pond 6
Pond Data
Pond storage is based on known contour areas. Average end area m ethod used.
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cult) Total storage (cult)
0.00 553.00 13,211 0 0
0.50 553.50 15,824 7,259 7,259
1.00 554.00 19,935 8,940 16,199
1.50 554.50 21,050 10,246 26,445
2.00 555.00 22,581 10,908 37,353
3.00 556.00 24,681 23,631 60,984
4.00 557.00 26,837 25,759 86,743
5.00 558.00 29,049 27,943 114,686
Culvert / Orifice Structures
[A] [B] [C] [D]
Rise (in) = 30.00 2.75 0.00 0.00
Span (in) = 30.00 2.75 0.00 0.00
No. Barrels = 1 1 0 0
Invert El. (ft) = 548.00 553.00 0.00 0.00
Length (ft) = 82.00 1.00 0.00 0.00
Slope (%) = 1.22 1.00 0.00 0.00
N-Value = .013 .013 .000 .000
Orif. Coeff. = 0.60 0.60 0.00 0.00
Multistage = n/a Yes No No
Weir Structures
[A] [S] [C] [D]
Crest Len (ft) = 20.00 20.00 0.00 0.00
Crest El. (ft) = 554.50 556.00 0.00 0.00
Weir Coeff. = 3.33 3.00 0.00 0.00
Weir Type = Riser Broad - -
Multi-Stage = Yes No No No
Wiltration = 0.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Note: CiuTvert/Orifice outflows have been analyzed under inlet and outlet control.
Stage (ft)
5.00
4.00
3.00
2.00
1.00
Stage I Discharge
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00 0.00
0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00 200.00 220.00 240.00
Total Q Discharge (cfs)
Hydrograph Summary Report
Hyd.
No. Hydrograp
type
(origin) Peak
flow
(cfs) Time
Interval
(min) Time to
peak
(min) Volume

(cult) Inflow
hyd(s) Maximum
elevation
(ft) Maximum
storage
(cuft) Hydrograph
description
1 Manual 68.99 3 33 194,380 -- --- ------ <no description>
2 Reservoir 57.82 3 42 194,237 1 555.61 51,786 <no description>
Pond 6 rev 20080821.gpw Return Period: 10 Year Friday, Aug 22 2008
Hydraflow Hydrographs by Intelisolve
6
Hydrograph Plot
Hydraflow Hydrographs by Intellsolve 1=riday, Aug 22 2008,10:55 AM
Hyd. No, 2
<no description>
Hydrograph type = Reservoir Peak discharge = 57.82 cfs
Storm frequency = 1 a yrs Time interval = 3 min
Inflow hyd. No. = 1 Max. Elevation = 555.61 ft
Reservoir name = Pond 6 Max. Storage = 51,786 cuft
Storage Indication method used.
Q (cfs)
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
Hydrograph Volume = 194,237 cuft
<no description>
Hyd. No. 2 -- 10 Yr
0.0 0.5 1.0 1.5
Hyd No. 2 Hyd No. 1
Q (cfs)
70.00
60.00
50.00
40.00
30.00
20.00
----------- - -------- - -- - -----------------------
------- - ------------- - ----
10.00
- ---- ------ - ----- --- ------------- -------- - - --------- - ------ -------------------- ----------- - ------
0.00
2.0 2.5 3.0 3.5
Time (hrs)
Pond Report 7
Hydraflow Hydrographs by Intelisolve Friday, Aug 22 2008,10:55 AM
Pond No. 1 - Pond 6
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage I Storage Table
Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cuft) Total storage (cult)
0.00 553.00 13,211 0 0
0.50 553.50 15,824 7,259 7,259
1.00 554.00 19,935 8,940 16,199
1.50 554.50 21,050 10,246 26,445
2.00 555.00 22,581 10,908 37,353
100 556.00 24,681 23,631 60,984
4.00 557.00 26,837 25,759 86,743
5.00 558.00 29,049 27,943 114,686
Culvert I Orifice Structures Weir Structures
[A] [B] [C] [D] [A] [13] [C] [D]
Rise (in) = 30.00 2.75 0.00 0.00 Crest Len (ft) = 20.00 20.00 0.00 0.00
Span (in) = 30.00 2.75 0.00 0.00 Crest El. (ft) = 554.50 556.00 0.00 0.00
No. Barrels = 1 1 0 0 Weir Coeff. = 3.33 3.00 0.00 0.00
Invert El. (ft) = 548.00 553.00 0.00 0.00 Weir Type = Riser Broad --- ---
Length (ft) = 82.00 1.00 0.00 0.00 Multi-Stage = Yes No No No
Slope (%) = 1.22 1.00 0.00 0.00
N-Value = .013 .013 .000 .000
Orif. Coeff. = 0.60 0.60 0.00 0.00
Multi-Stage = n/a Yes . No No Exfiltratlon = 0.000 in/hr (Contour) Tailwater Elev. = 0.00 ft
Note: Culvert/Orifice outflows have been analyzed under inlet and outlet control.
Stage (ft)
5.00
4.00
3.00
2.00
1.00
Stage I Discharge
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00 1 1 1 1 1 1 1 1 I I I I L 0.00
0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00 200.00 220.00 240.00
Total 0 Discharge (cfs)
Hydrograph Summary Report
Hyd.
No. Hydrograp
type
(origin) Peak
flow
(cfs) Time
Interval
(min) Time to
peak
(min) Volume

(cuft) Inflow
hyd(s) Maximum
elevation
(ft) Maximum
storage
(cuft) Hydrograph
description
1 Manual 91.65 3 42 332,932 ---- ----- ---- <no description>
2 Reservoir 80.83 3 54 332,788 1 556.44 72,429 <no description>
Pond 6 rev 20080821.gpw Return Period: 100 Year Friday, Aug 22 2008
Hydraflow Hydrographs by Intelisolve
Hydrograph Plot
Hydrograph Volume = 332,788 cult
Hydraflow Hydrographs by Intelisolve Friday, Aug 22 2008,10:55 AM
Hyd. No. 2
<no description>
Hydrograph type = Reservoir Peak discharge = 80.83 cfs
Storm frequency = 100 yrs Time interval = 3 min
Inflow hyd. No. = 1 Max. Elevation = 556.44 ft
Reservoir name = Pond 6 Max. Storage = 72,429 cuft
Storage Indication method used.
Q (cfs)
100.00
---------------- - ---------------
------ - ---------
90.00
_-----------._
80.00
70.00
-- --------
60-00
----- ----- -- -
50.00
40.00
30.00
----------------
20.00
10.00 - -
0 00
9
<no description>
Hyd. No. 2 --100 Yr
0.0 0.5
Hyd No. 2
1.0 1.5
Hyd No. 1
Q (cfs)
100.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
2.0 2.5 3.0 3.5 4.0
Time (hrs)
Pond Report
Hydraflow Hydrographs by Intelisolve
Pond No. 1 - Pond 6
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (cult) Total storage (cuft)
0.00 553.00 13,211 0 0
0.50 553.50 15,824 7,259 7,259
1.00 554.00 19,935 8,940 16,199
1.50 554.50 21,050 10,246 26,445
2.00 555.00 22,581 10,908 37,353
3.00 556.00 24,681 23,631 60,984
4.00 557.00 26,837 25,759 86,743
5.00 558.00 29,049 27,943 114,686
10
Friday, Aug 22 2008, 10:55 AM
Culvert I Orifice Structures
[A] [B] [C] [D]
Rise (in) = 30.00 2.75 0.00 0.00
Span (in) = 30.00 2.75 0.00 0.00
No. Barrels = 1 1 0 0
Invert El. (ft) = 548.00 553.00 0.00 0.00
Length (ft) = 82.00 1.00 0.00 0.00
Slope (%) = 1.22 1.00 0.00 0.00
N-Value = .013 .013 .000 .000
Orif. Coeff. = 0.60 0,60 0.00 0.00
Multistage = n/a Yes No No
Weir Structures
[A] [B] [C] [D]
Crest Len (ft) = 20.00 20.00 0.00 0.00
Crest El. (ft) = 554.50 556.00 0.00 0.00
Weir Coeff. = 3.33 3.00 0.00 0.00
Weir Type = Riser Broad --- -
Multi-Stage = Yes No No No
Exfiltration = 0.000 in/hr (Contour) Tallwater Elev. = 0.00 ft
Note: Culvert/Onfice outflows have been analyzed under inlet and outlet control.
Stage (ft)
5.00
4.00-
3.00 -
2.00 -
1.00 -
Stage 1 Discharge
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00 -' ' ' 1 1 1 1 1 I I I 1 1 0.00
0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00 200.00 220.00 240.00
Total 0 Discharge (cfs)
IMPERVIOUS CALCULATIONS
Post-developed water quality storage volume requirements:
Total Impervious Area 308,840 s.f.
Total Area = 14.71 ac.
Impervious Area 7.09 ac.
Impervious Percentage = 48.2%
The storage volume for the 1"storm (Scheeler Method) would be:
Rv=.05+.9 (1)
RV= 0.48
Volume = (Design Rainfall)' (RV)'(Drainage Area)
Volume = 0.5930 ac.fL
25,833 cf
25,833 c.f. storage required.
26,445 c1 storage provided
Average Pool Depth = 3 ft.
SA / DA ratio = 2.00 <-- Interpolation of table 1.1
Required Surface Area= 0.29 ac.
12,819 sf
Surface Area Provided 13,211 sf
Permanent Pool Storage Volume
Incremental Total
Elev. Area (s.f.) Volume (af.) Volume (c.f.) Depth (ft)
548 4,911
5,511 5,511 1
549 6,111
6,739 12,250 2
550 7,367
8,024 20,274 3
551 8,680
9,365 29,639 4
552 10,050
5,202 34,840 4.5
552.5 10,756
5,992 40,832 5
563 Perm Pool 13,211
7,259 7,259 0.5
553.5 16,824
8,940 16,199 1
554 19,935
10,246 26,445 1.5 -
664.6 21,050
Average Depth = 3.09
Forebay Volume = 20% of Permanent Pool Volume
Permanent Pool Volume = 40,832 c.f.
Forebay Volume Regd.= 8,166 c.f.
Forebay Volume Provided
Incremental Total
Elev. Area (s.f.) Volume (c.f.) Volume (c.f.) Depth (fL)
549 1.422
1,576 1,576 1
550 1,729
1,896 3,471 2
651 2,062
2,241 5,712 3
552 2,420
2,612 8,324 4
563 2,803
P 1115(RIdWSOWn Al 15-49(ULM SK* CarsmxtiWN-s KM AVWP CSCWM& 2-&PW MWMI O=K?0n1g,FY.M 6 OR108a1s 1 of t
DESIGN REQUIREMENTS:
Drainage Area, (DA) _
Overland Flow
Elevation of most remote point, (Hl) _
Elevation of point of design, (1-12) _
Length of travel, (L) _
Mutt, factor=
Travel Time (Overland) _
Channel Flow
Elevation of most remote point, (141) _
Elevation of point of design, (H2) _
Length of travel, (L) _
Mult. factor=
Travel Time (Channel) _
Channel Flow
Elevation of most remote point, (Hl) _
Elevation of point of design, (H2) _
Length of travel, (L) _
Mult. factor=
Travel Time (Pipe) _
Time of Concentration, (Tc) _>
Intensity, (1)
Composite Runoff Coefficient, (C) _>
Peak Release Rate, (Q1) _>
14.71 acres
591.0 feet
590.0 feet
100.0 feet
1.0
1.6 minutes
594.0 feet
578.0 feet
260.0 feet
1.0
1.8 minutes
578.0 feet
552.0 feet
290.0 feet
1.0
1.6 minutes
5.0 minutes
4.52 inches/hr
0.65
43.23 cfs
Use 5.0 min
s:1131110002%081fs1POSlCewtepecPnBOVMydrographxls panted: 812112008 1:33 PM
Drainage Area, (DA) = 14.71 acres
Overland Flow
Elevation of most remote point, (Hl) = 591.0 feet
Elevation of point of design, (1-12) = 590.0 feet
Length of travel, (L) = 100.0 feet
Mult. factor= 1.0
Travel Time (Overland) = 1.6 minutes
Channel Flow
Elevation of most remote point, (H1) = 590.0 feet
Elevation of point of design, (112) = 578.0 feet
Length of travel, (L) = 260.0 feet
Mult. factor= 1.0
Travel Time (Channel) = 1.8 minutes
Pipe Flow
Elevation of most remote point, (111) = 578.0 feet
Elevation of point of design, (H2) = 97.0 feet
Length of travel, (L) = 270.0 feet
Mult. factor = 1.0
Travel Time (Pipe) = 0.5 minutes Use 5.0 min
Time of Concentration, (Tc) 5.0 minutes
Intensity, (I) = 7.22 inches/hr
Composite Runoff Coefficient, (C)
Peak Release Rate, (Q10) _>
0.65
69.06 cfs
Drainage Area, (DA) _
Time of Concentration, (Tc) _>
Intensity, (1) _
Composite Runoff Coefficient, (C) _>
Peak Release Rate, (Q50) _>
Drainage Area, (DA) _
Time of Concentration, (Tc) _>
Intensity, (1) _
Composite Runoff Coefficient, (C) >
Peak Release Rate, (Qtoa) _>
14.71 acres
5.0 minutes
8.29 inches/hr
0.65
79.22 cfs
14.71 acres
5.0 minutes
9.67 inches
0.65
92.43 cfs
s11311100021cal=Wost-developed-inflo -hydrolpapb.xl3 printed: 8121120081: 33 PM
Peak Inflow, (Qi) 43.2 cfs
Time to Peak Calculation: CN= 85 P= 3 in. S_ 1.76 iQ.
Q*= 1.59 in. (depth of runoff)
Vol= 84,807 cf (Vol. of runoff)
Time to Peak, (Tp) 23.52 minutes
(SCS TR-55)
t/tp 9ft t Q
min efs
0.00 0.000 0 0.00
0.13 0.040 3 1.71
0.26 0.152 6 6.58
0.38 0.320 9 13.83
0.51 0.516 12 22.31
0.64 0.710 15 30.68
0.77 0.870 18 37.62
0.89 0.972 21 42.02
1.02 0.999 24 43.19
1.15 0.947 27 40.94
1.28 0.827 30 35.74
1.40 0.700 33 30.28
1.53 0.593 36 25.65
1.66 0.503 39 21.73
1.79 0.426 42 18.41
1.91 0.361 45 15.60
2.04 0.306 48 13.22
2.17 0.259 51 11.20
2.30 0.219 54 9.49
2.42 0.186 57 8.04
2.55 0.157 60 6.81
2.68 0.133 63 5.77
2.81 0.113 66 4.89
2.93 0.096 69 4.14
3.06 0.081 72 3.51
3.19 0.069 75 2.97
3.32 0.058 78 2.52
3.44 0.049 81 2.13 -
3.57 0.042 84 1.81
3.70 0.035 87 1.53
3.83 0.030 90 1.30
195 0.025 93 1.10
4.08 0.022 96 0.93
4.21 0.018 99 0.79
434 0.015 102 0.67
4.46 0.013 105 0.57
4.59 0.011 108 0.48
4.72 0.009 111 0.41
4.85 0.008 114 0.34
4.97 0.007 117 0.29
5.10 0.006 120 0.25
5.23 0.005 123 0.21
5.36 0.004 126 0.18
5.48 0.003 129 0.15
5.61 0.003 132 0.13
5.74 0.002 135 0.11
5.87 0.002 138 0.09
5.99 0.002 141 0.08
6.12 0.002 144 0.07
6.25 0.001 147 0.06
6.38 0.001 150 0.05
6.51 0.001 153 0.04
6.63 0.001 156 0.03
6.76 0.001 159 0.03
6.89 0.001 162 0.02
7.02 0.000 165 0.02
7.14 0.000 168 0.02
s:1131110002ka1rsWOS1-0eveloped-intbw-hydrogrophxfs printed: Sni/20081:33 PM
7.27 0.000 171 0.01
7.40 0.000 174 0.01
7.53 0.000 177 0.01
7.65 0.000 180 0.01
7.78 0.000 183 0.01
7.91 0.000 186 0.01
8.04 0.000 189 0.01
8.16 0.000 192 0.00
8.29 0.000 195 0.00
8.42 0.000 198 0.00
8.55 0.000 201 0.00
8.67 0.000 204 0.00
8.80 0.000 207 0.00
8.93 0.000 210 0.00
9.06 0.000 213 0.00
9.18 0.000 216 0.00
9.31 0.000 219 0.00
9.44 0.000 222 0.00
9.57 0.000 225 0.00
9.69 0.000 228 0.00
9.82 0.000 231 0.00
9.95 0.000 234 0.00
10.08 0.000 237 0.00
10.20 0.000 240 0.00
10.33 0.000 243 0.00
10.46 0.000 246 0.00
10.59 0.000 249 0.00
10.71 0.000 252 0.00
10.84 0.000 255 0.00
10.97 0.000 258 0.00
11.10 0.000 261 0.00
11.22 0.000 264 0.00
11.35 0.000 267 0.00
11.48 0.000 270 0.00
11.61 0.000 27,33 0.00
11.73 0.000 276 0.00
11.86 0.000 279 0.00
11.99 0.000 282 0.00
12.12 0.000 285 0.00
12.24 0.000 288 0.00
12.37 0.000 291 0.00
12.50 0.000 294 0.00
12.63 0.000 297 0.00
12.76 0.000 300 0.00
12.88 0.000 303 0.00
13.01 0.000 306 0.00
13.14 0.000 309 0.00
13.27 0.000 312 0.00
13.39 0.000 315 0.00
13.52 0.000 318 0.00
13.65 0.000 321 0.00
13.78 0.000 324 0.00
13.90 0.000 327 0.00
14.03 0.000 330 0.00
14.16 0.000 333 , 0.00
x11317\0002kmlmWosbdevelope"Ro hydrogwh.xls printed: 8121120081:33 PM

Peak Inflow, (Ql(,) = 69.1 cfs
Time to Peak Calculation: CN= 85 P= 5.28 in. S= 1.76 in
Q*= 163 in. (depth of runoff)
Vol= 193,711 cf (vol. of runoff)
Time to Peak, (Tp) 33.63 minutes
(SCS TR-55)
t/te -Q?QP t Q
min efs
0.00 0.000 0.00 0.00
0.09 0.020 3.00 1.35
0.18 0.076 6.00 5.28
0.27 0.167 9.00 11.50
0.36 0.283 12.00 19.51
0.45 0,416 15.00 28.69
0.54 0.555 18.00 38.33
0.62 0.690 21.00 47.68
0.71 0.811 24.00 55.99
0.80 0.907 27.00 62.63
0.89 0.971 30.00 67.08
0.98 0.999 33.00 68.99
1.07 0.988 36.00 68.22
1.16 0.939 39.00 64.81
1.25 0.855 42.00 59.04
1.34 0.762 45.00 52.64
1.43 0.679 48.00 46.88
1.52 0.605 51.00 41.75
1.61 0.538 54.00 37.18
1.69 0.479 57.00 3111
1.78 0.427 60.00 29.48
1.87 0.380 63.00 26.25
1.96 0.339 66.00 23.38
2.05 0.301 69.00 20.82
2.14 0.268 72.00 18.54
2.23 0.239 75.00 16.51
2.32 0.213 78.00 14.70
2.41 0.190 81.00 13.09
2.50 0.169 84.00 11.66
2.59 0.150 87.00 10.38
2.68 0.134 90.00 9.25
2.76 0.119 93.00 823
2.85 0.106 96.00 7.33
2.94 0.095 99.00 6.53
3.03 0.084 102.00 5.82
3.12 0.075 105.00 5.18
3.21 0.067 108.00 4.61
3.30 0.059 111.00 4.11
3.39 0.053 114.00 3.66
3.48 0.047 117.00 3.26
3.57 0.042 120.00 2.90
3.66 0.037 123.00 2,58
3.75 0.033 126.00 2.30
3.84 0.030 129.00 2.05
3.92 0.026 132.00 1.82
4.01 0.024 135.00 1.62
4.10 0.021 138.00 1.45
4.19 0.019 141.00 1.29
4.28 0.017 144.00 1.15
437 0.015 147.00 1.02
4.46 0.013 150.00 0.91
4.55 0.012 153.00 0.81
4.64 0.010 156.00 0.72
4.73 0.009 ] 59.00 0.64
4.82 0.008 162.00 0.57
4.91 0.007 165.00 0.51
4.99 0.007 168.00 0.45
s1131WC02kafcsVPost-0avelepa&iifl v hydrogmph.xls printe&. 3121120001:33 PM
5.08 0.006 171.00 0.40
5.17 0.005 174.00 0.36
5.26 0.005 177.00 0.32
5.35 0.004 180.00 0.29
5.44 0.004 183.00 0.25
5.53 0.003 186.00 0.23
5.62 0.003 189.00 0.20
5.71 0.003 192.00 0.18
5.80 0.002 195.00 0.16
5.89 0.002 198.00 0.14
5.98 0.002 201.00 0.13
6.07 0.002 204.00 0.11
6.15 0.001 207.00 0.10
6.24 0.001 210.00 0.09
6.33 0.001 213.00 0.08
6.42 0.001 216.00 0.07
6.51 0.001 219.00 0.06
6.60 0.001 222.00 0.06
6.69 0.001 225.00 0.05
6.78 0.001 228.00 0.04
6.87 0.001 231.00 0.04
6.96 0.001 234.00 0.04
7.05 0.000 237.00 0.03
7.14 0.000 240.00 0.03
7.22 0.000 243.00 0.02
7.31 0.000 246.00 0.02
7.40 0.000 249.00 0.02
7.49 0.000 252.00 0.02
7.58 0.000 255.00 0.02
7.67 0.000 258.00 0.01
7.76 0.000 261.00 0.01
7.85 0.000 264.00 0.01
7.94 0.000 267.00 0.01
8.03 0.000 270.00 0.01
8.12 0.000 273.00 0.01
8.21 0.000 276.00 0.01
8.29 0.000 279.00 0.01
8338 0.000 282.00 0.01
8.47 0.000 285.00 0.00
8.56 0.000 288.00 0.00
8.65 0.000 291.00 0.00
8.74 0.000 294.00 0.00
8.83 0.000 297.00 0.00
8.92 0.000 300.00 0.00
9.01 0.000 303.00 0.00
9,10 0.000 306.00 0.00
9.19 0.000 309.00 0.00
9.28 0.000 312.00 0.00
9.37 0.000 315.00 0.00
9.45 0.000 318.00 0.00
9.54 0.000 321.00 0.00
9.63 0.000 324.00 0.00
9.72 0.000 327.00 0.00
9.81 0.000 330.00 0.00
9.90 0.000 333.00 0.00
9.99 0.000 336.00 0.00
10.08 0.000 339.00 0.00
10.17 0.000 342.00 0.00
10.26 0.000 345.00 0.00
10.35 0.000 348.00 0.00
10.44 0.000 351.00 0.00
10.52 0.000 354.00 0.00
10.61 0.000 357.00 0.00
10.70 0.000 360.00 0.00
10.79 0.000 363.00 0.00
10.88 0.000 366.00 0.00
10.97 0.000 369.00 0.00
11.06 0.000 372.00 0.00
11.15 0.000 375.00 0.00
11.24 0.000 378.00 0.00
11.33 0.000 381.00 0.00
11.42 0.000 384.00 0.00
s:\7 31110 0 0 2VCai sWos1-developeddnllox?hydrographxts p0rded: &'2112008 1.33 PM
11.51 0.000 387.00 0.00
11.60 0.000 390.00 0.00
11.68 0.000 393.00 0.00
11.77 0.000 396.00 0.00
s:N31110002VMWPost-developed-lnfl -hydmgmph.xls pdnled: 812112008 1:33 PU
o' 11
Peak Inflow, (Qtgg) = 92.43 cfs
Time to Peak Calculation: CN= 85 P= 8 in. S= 1.76 in.
Q*= 6.21 in. (depth of runoff)
Vol= 331,770 cf (vol. of runoff)
Time to Peak, (Tp) 43.04 minutes
(SCS TR-55)
Y-tR Q/QR t s
min efs
0.00 0.000 0.00 0.00
0.07 0.012 3.00 1.10
0.14 0-047 6.00 4.36
0.21 0.104 9.00 9.62
0.28 0.180 12.00 16.62
0.35 0.271 15.00 25.04
0.42 0.373 18.00 34.47
0.49 0.481 21.00 44.46
0.56 0.590 24.00 54.53
0.63 0.695 27.00 64.21
0.70 0.790 30.00 73.03
0.77 0.872 33.00 80.56
0.84 0.935 36.00 86.46
0.91 0.978 39.00 90.43
0.98 0.999 42.00 92.29
1.05 0.995 45.00 91.96
1.12 0.968 48.00 89.43
1.18 0.918 51.00 84.84
1.25 0.849 54.00 78.51
1.32 0.776 57.00 71.71
1.39 0.709 60.00 65.50
1.46 0.647 63.00 59.82
1.53 0.591 66.00 54.64
1.60 0.540 69.00 49.91
1.67 0.493 72.00 45.58
1.74 0.450 75.00 41.64
1.81 0.411 78.00 38.03
1.88 0.376 81.00 34.73
1.95 0.343 84.00 31.72
2.02 0.314 87.00 28.98
2.09 0.286 90.00 26.47
2.16 0.262 93.00 24.17
2.23 0.239 96.00 22.08
2.30 0.218 99.00 20.17
2.37 0.199 102.00 18.42
2.44 0.182 105.00 16.82
2.51 0.166 108.00 15.37
2.58 0.152 111.00 14.04
2.65 0.139 114.00 12.82
2.72 0.127 117.00 11.71
2.79 0.116 120.00 10.69
2.86 0.106 123.00 9.77
2.93 0.097 126.00 8.92
3.00 0.088 129.00 8.15
3.07 0.081 132.00 7.44
3.14 0.074 135.00 6.80
3.21 0.067 138.00 6.21
3.28 0.061 141.00 5.67
3.35 0.056 144.00 5.18
3.42 0.051 147.00 4.73
3.49 0.047 150.00 4.32
3.55 0.043 153.00 3.95
3-62 0.039 156.00 3.61
3.69 0.036 159.00 3.29
3.76 0.033 162.00 3.01
3.83 0.030 165.00 2.75
3.90 0.027 168.00 2.51
s:U311100021f islPOst-developed-inflm?hydragrephxts panted: 8121120081:33 PM
3.97 0.025 171.00 2.29
4.04 0.023 174.00 2.09
4.11 0.021 177.00 1.91
4.18 0.019 180.00 1.75
4.25 0.017 183.00 1.59
4.32 0.016 186.00 1.46
4.39 0.014 189.00 1.33
4.46 0.013 192.00 1.22
4.53 0.012 195.00 1.11
4.60 0.011 198.00 1.01
4.67 0.010 201.00 0.93
4.74 0.009 204.00 0.85
4.81 0.008 207.00 0.77
4.88 0.008 210.00 0.71
4.95 0.007 213.00 0.64
5.02 0.006 216.00 0.59
5.09 0.006 219.00 0.54
5.16 0.005 222.00 0.49
5.23 0.005 225.00 0.45
5.30 0.004 228.00 0.41
5.37 0.004 231.00 0.37
5.44 0.004 234.00 0.34
5.51 0.003 237.00 0.31
5.58 0.003 240.00 0.29
5.65 0.003 243.00 0.26
5.72 0.003 246.00 0.24
5.79 0.002 249.00 0.22
5.86 0.002 252.00 0.20
5.92 0.002 255.00 0.18
5.99 0.002 258.00 0.17
6.06 0.002 261.00 0.15
6.13 0.001 264.00 0.14
6.20 0.001 267.00 0.13
6.27 0.001 270.00 0.12
6.34 0.001 273.00 0.11
6.41 0.001 276.00 0.10
6.48 0.001 279.00 0.09
6.55 0.001 282.00 0.08
6.62 0.001 285.00 0.07
6.69 0.001 288.00 0.07
6.76 0.001 291.00 0.06
6.83 0.001 294.00 0.06
6.90 0.001 297.00 0.05
6.97 0.001 300.00 0.05
7.04 0.000 303.00 0.04
7.11 0.000 306.00 0.04
7.18 0.000 309.00 0.04
7.25 0.000 312.00 0.03
7.32 0.000 315.00 0.03
7.39 0.000 318.00 0.03
7.46 0.000 321.00 0.02
7.53 0.000 324.00 0.02
7.60 0.000 327.00 0.02
7.67 0.000 330.00 0.02
7.74 0.000 333.00 0.02
7.81 0.000 336.00 0.02
7.88 0.000 339.00 0.01
7.95 0.000 342.00 0.01
8.02 0.000 345.00 0.01
8.09 0.000 348.00 0.01
8.16 0.000 351.00 0.01
8.22 0.000 354.00 0.01
8.29 0.000 357.00 0.01
8.36 0.000 360.00 0.01
8.43 0.000 363.00 0.01
8.50 0.000 366.00 0.01
8.57 0.000 369.00 0.01
8.64 0.000 372.00 0.01
8.71 0.000 375.00 0.00
8.78 0.000 378.00 0.00
8.85 0.000 381.00 0.00
8.92 0.000 384.00 0.00
5:11311100021caloWost-developed-Inflow4yydmgraph.xls printed: MV20081:33 PM
8.99 0.000 387.00 0.00
9.06 0.000 390.00 0.00
9.13 0.000 393.00 0.00
9.20 0.000 396.00 0.00
9.27 0.000 399.00 0.00
9.34 0.000 402.00 0.00
9.41 0.000 405.00 0.00
9.48 0.000 408.00 0.00
9.55 0.000 411.00 0.00
9.62 0.000 414.00 0.00
9.69 0.000 417.00 0.00
9.76 0.000 420.00 0.00
9.83 0.000 423.00 0.00
9.90 0.000 426.00 0.00
9.97 0.000 429.00 0,00
10.04 0.000 432.00 0.00
10.11 0.000 435.00 0.00
10.18 0.000 438.00 0.00
10.25 0.000 441.00 0.00
10.32 0.000 444.00 0.00
10.39 0.000 447.00 0.00
10.46 0.000 450.00 0.00
10.53 0.000 453.00 0.00
10.59 0.000 456.00 0.00
10.66 0.000 459.00 0.00
10.73 0.000 462.00 0.00
10.80 0.000 465.00 0.00
10.87 0.000 468.00 0.00
10.94 0.000 471.00 0.00
11.01 0.000 474.00 0.00
11.08 0.000 477.00 0.00
11.15 0.000 480.00 0.00
11.22 0.000 483.00 0.00
11.29 0.000 486.00 0.00
11.36 0.000 489.00 0.00
11.43 0.000 492.00 0.00
11.50 0.000 495.00 0.00
11.57 0.000 498.00 0.00
11.64 0.000 501.00 0.00
11.71 0.000 504.00 0.00
9•.11311l0002%cWm ost-developed-Infix hydregraph.As pAnted: 82120081:33PM
Beflern
NC
DATE DESIGN PHASE
08f21/08 PRELIM
PROJECTNO CONSTR X
115-09 REVISION
BY RECORD
Storm Outlet Structure
FES No.= Pond - 6 # of Barrels Q101Qfull = 1.28
Pipe Dia= in 1 VNfull = MAX
Q10 = 57.82 efs V= 11.8 fps
Qfull = 45.30 cfs
Vfull = 9.20 fps
Use 301n for chart
From Fig. 8.06.b.1: Zone =
From Fig. 8.06.b.2: D5o - 10 in
DmAx = 15 in
Riprap Class = 1
Apron Thickness = 30 in
i Apron Length = 20.0 ft

L h Apron Width = 3xDia = 7.5 ft
Q10 is half of flow. For multiple barrels, Zone and length talcs include 1.25 factor of correction.
PA115 (Rkky Spoon A115-N (South Side Cond rixhwpv )o,,%yjhw q,** pond mIcsTonds 2 %Nnd 6 wd s dswpe w dS 1 of 1
FLOTATION OF RISER - Pond 6
ELEV. @ TOP OF RISER =
ELEV. @ BOT. _
H=
RISER INSIDE DIMENSIONS (L x W)
RISER WALL WIDTH
RISER OUTSIDE DIMENSIONS (L x W)
AREA OF RISER =
VOLUME OF RISER =
DIAMETER OF BARREL =
AREA OF BARREL =
EXPOSED LENGTH =
VOLUME OF BARREL =
WEIGHT OF WATER DISPLACED = 15,521 Ib
FACTOR OF SAFETY (10%) 17,073 Ib
WEIGHT OF BOX -
RISER INSIDE DIMENSION 25.00 s.f.
RISER OUTSIDE DIMENSION 36.00 s.f.
HEIGHT - 6.50 ft ft
BOTTOM THICKNESS .0.. ft
BOTTOM DIMENSIONS
BOTTOM AREA 30.25 ft
BOTTOM VOLUME 15.13 c.f.
WALLS VOLUME 71.50 c.f.
TOTAL VOLUME 86.63 c.f.
x 175 Ibs/c.f.
15,159 Ibs
UPWARD FORCE TO OFF SET BOUYANCY 1,913 Ibs
REQUIRED VOLUME OF CONCRETE ANCHOR = 21.8 c.f.
ANTI-FLOTATION PAD REQUIRED
DEPTH =
WIDTH - -'
LENGTH= Total Volume Provided 27.0 c.f.

Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential roblem: How I will remediate the problem:
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 replace 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 554 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 55? feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
V Permanent Pool Elevation S 3
Sediment Removal Pe anen Pool
--------------
Bottom Elevatiog -- Volume
ft Min. ---- Sediment Removal Elevation g
------------------------------------ Volume
--
---

Sediment
Bottom Elevation 5 ?7 i
II/
Storage -
Sedimer
Storage
FOREBAY MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4
ArA
NCDIENR
Permit No.
(to be provided by DWQ)
o?aF W ATE9QG
fl C
Q 'C
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out printed and submitted
The Required Items Checklist (Part 111) must be printed, filled out and submitted along wifh all of the required information
Site Characteristics
Drainage area
Impervious area
% impervious
Design rainfall depth
Storage Volume: Non-SR Waters
Minimum volume required
Volume provided
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post development
Rainfall intensity:)-yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flow control
Basin Elevations
Basin bottom elevation
Sediment cleanout elevation
Bottom of shelf elevation
Permanent pool elevation
SHVV7 elevation
Top of shelf elevation
Temporary pool elevation
1471 fe
7.09 fe
48.20 %
1.00 in
ft3
ft3
3.00 in
60;277.00ft3
84,807.06 -, ft3
24,530.00 ft3
27;86000 ft3
3:00 in
- o-25 {unitless)
_0.65 (unitless)
4!52 in/hr
16.63 fe/sec
43,23 ... ; ft3lsec
26.60 ft3lsec
547,00 It
548.00 It
552.50 , It
553.00 ft
ft
553.50
554.50: it
Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 1 of 2
Permit No.
(to be provided by DWQ)
Volume and Surface Area Calculations
SAIDA ratio 2.G0 (unitless)
Surface area at the bottom of shelf 10;756,00 if
Volume at the bottom of shelf 34;840-00 ft
Permanent pool, surface area required 12,819.00 ft2
Permanent pool, surface area provided 13211.00 fe OK
Permanent pool volume 40,832 00 fe
Average depth for SA/DA tables 3.09 it OK
Surface area at the top of shelf 15,824.00 fe
Volume at the top of shelf 48,091.00 ff
Forebay volume 8,324.00 ft'
Forebay % of permanent pool volume 20.39 % OK
Temporary pool, surface area provided 21,050.00
Drawdown Calculations
Treatment volume drawdown time 2.'20 days OK
Treatment volume discharge rate 0.24. fees
Pre-development 1-yr, 24-hr discharge 16 63 ft3ls OK
Post-development 1-yr, 24-hr discharge 28.78 ff/s Decrease discharge rate
Additional Information
Diameter of orifice i275 in
Design TSS removal 85 %
Basin side slopes 3.00 :1 OK
Vegetated shelf slope 10.00 :1 OK
Vegetated shelf width 10.00 :ft OK
Length of flowpath to width ratio -3.00 :1 OK
Length to width ratio 2.00 :1 OK
Trash rack for overflow & orifice? Y (Y or N) OK
Freeboard provided uo ft OK
Vegetated filter provided? Y (Y or N) OK
Recorded drainage easement provided? N - (Y or N) Need a recorded drainage easement
Capures all runoff at ultimate build-out? (Y or N) OK
Drain mechanism for maintenance or emergencies GATE VALVE
Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 2 of 2
h. -T /
I \ \ 1 1 ! ddb f .J \ \ ~ ~ ~ i-, _ ° ~ / J /
\ ! I 1 1 ,fir l f I!. r'"' j ? " ~~.._.1 w,r'~ • r' _ 'i`•' / I Ill ' l~ i / r''~ / ~ ~ 11.1
i-,' I ~ V I) i ~ I 1 I ~ I f• / • " ` • r v°~>`s v y 1 / / / / t O/ i / i 1 I I ! i I i` I ~ I d/ 1'~ ' r `-~~'~°i u> ' a- ~ a ® a / ! t / / / / ~i /~Oi i' _ ~ I ~ ~z,~~~S~,~a~e,~~suJ~~GidvooP~t!(~~1~11 N I-

/ 1 J / rr / `'~~,,f t \ l uT.-ff\ ~-_.-__".530-ir~° / / ~v\.-~•-^~~~--_ "fi~C,r
..1 / / l j , \ ? `\r1 f"? °e \ \e ~ \ 1 ( .r ~r ,.',;.r"' ~ ,its" „/t - ~.nti' _ _
° ~ ~ ~ / ? ~V ~ ~ r rl ~ ~
, .,ate 1 r"•.) ti ~ ~
v vv vi' ~ I ~ ~
/ ~ / i / / ~ I r` I di I 1 vJ f ~ . C \ i LL-'/ \ \ \ \ @ \ l ~
/ _ / f • ! ~ 1 ,EZ1.Sr~c~o1 N~ nil'°•,,1\ - / ~ r•,1~ _ r~ f-.,./ , 1t \ , i %'ir ~ \ \fl ' ~ ~ `.e, 1 I \ ` . iN`E~iSTdllHfO~~~;____-__ _ ~
t0 ~ / `fir / ~C-i:""3^ 1 ~ r~;'~ ~ I d ~ ~a.= 1 f ~ `1`~ ``e;\ l I 1 ~ ~...,..I~~(~•~t1D~"~~'~`•~~-_......~•".....- '
_ t~ . _~~R TORRID; _
y , ~ f , ; ; ,1 , , WfII,ITY 1 biNTEiyAN ~ ~ ~ - - _ _ _ _ ` -"r ~ / \ \ - ! \ _ a L-----°--^.. • _ \ 3, \
. \ ~ ~ 1 1 A~~ES~ ~ E~tE1VT , ~ P. ` ; - - - - - _ ~ - --r-~ ` \ 41 1 \i 1 1 j\ \ 't° i I 1 ~ 9r' ~s,, ~ 1 ~ e. = `
° V, ?11 , ~1 I 1.`...r°"J,' 11 ''v i 1 tl t ~ ry l ` 11~ c t °\VL' _ ~ / ~ , , .r 1, /r 1 1 l; / ` s,^' / r 1 ~ - _ ^ \~1° ~ it \ \
/ \ /i°~~j 1 1.\.._. 1 \ 4 \ ' 1 I P ~ / 1 I V 1` _ .J ~1 ( \ \ - _ -ems _ _ ' / . ~~fi~r/••, --e /i/~ \4 / _ ~ \ 1 1 l ,,-`t`' 1 \ \ < ~ `1 f e ~ t 1 ; I Ci 1 ~ - wit \ \ _ _ - \ `ems e
\ J/,/.//. rd; Al 1 ~ l'''' 1 z ~ , ? f I ~ \ ~ ~ _ e r ~1, ~ ,((/°/i°j- \ ~:~:=vi..»'~"''.:`3, ,t, 1 \ -`~~.~°,,...,''J`~ 1 1 e\ { f 1 ~'I• i I ~ 1\\'~,,,..-'' _ - _ ~ e` e~~a ° ` •\\r\ \\\\°\\\\°Z°~\`~\°°\
~ r^ .~++'c~` I il~ /s/%I 9' \ e' n -/",e t 1\ ? \ as ' 1 J~, I d fl "yb 'l\•'\_ 1 ` \ _ ~ \ ee \ \ \
/ ~?;i~ dip' I III/ /i E . v ` e\ i v ,v i 1 ®1 p ~ ! I I ~ : / - ~v ~ A e . e / / x';r:~: ii~ii I ! ~i i~ + ////•~i \ \ ~ ; 1 ~ i 1 t ~ i i ! \ \ _ / - ~ , e\ , / y,~~ / II lll~I(r,^i ~ \ e\ ~ ~ \ 1 1,. °J li 1 (r ~ 1~-' l`•--- - \e`?\ `'I • \ \ \ \ \ e ~ \
/ ~ .•~'V o Ai~iflllii 1 \ ~ e I ~ ! ! ~,1~ I,/ r \ - \ e "e`~e ? \ \ ~/i l 1 i"~I II I~IIJ \ i e_..,,'~ ` ,."i >'m.~ ~ 4 „ u',~m '1 ~ ,.r 1 A, ~~"'1 !t ~ V v v~A v `~v? v v v
/ / / 1 ~ i s,Il ,l I ! I i //ii /j,//I~ r \ e e \ \ \I ` ,.e 1 1 ` d y ii •e II ~ p 1 / , _ \ \ . / / 1\ \ i~ ~IIII\I`\~ i /i//d//~ n;• ` I 1 ~ r 1 \ f , d - _ ~ _ te`e` \ ' '~>d' ' -
, ~C
/ 1 \ " s q': \ \ \ \\.\\\`tiV j • ? ~ 1 1 \ \1 1 1 I i1 1 / ~ C / ° / ° e \ e ` ` \ 1 \ \
/ / \ o `'.f\ ,,~c\\\\ //i , ~ S~Mn 1 1 rW~ ' 1 1 ! \ ` J 11 t%~~ '.:l / ~ ` - e e \ \ 1 1 \ 1 \ \ ` i ! I I1 / l 1 tr(rl r r ! I ~ 1 --~=-;v..^-- ; ~ ^ ° ; \ \ \ \
~ ? r\ ~ , yi o , V 1 1 1 1 I ! \ 1 i i I F `1~r, „ - ~ ' / / / ~ \ ` \ \ 1 1 1 \ 1 i \ ' ~ l 11 \ \I 1 ~ I I I ~ ~ 1 111 % / I! I \ i'..___-'__ _°-„-/i- ~ ~ ~ ~ °°e°` \ 1 \ ` ~ nn rr nn
I v ~ ~ vv/ ~ : ~ + 1 1 ( + + 0 \ ~ V ' ,1 ~ 1 I i 1 1- ~ J ~ ~ ; i / / ` ` V A \ V 1 ~ 1 1 I I Ij_.' \ 1 1 1 1 I I I I I I / / / \ / ° °i _ _ - ~ \ \ \ \ 1 1\' 1\ \ ~ - 1 1 1 1 l I 1 + I I / / / / ! d 1 \ \ /i%' \ ~ \ ? \ \ 1 1 1 \ \ 1 ° ^ ~ ~
e I v l i --a_ V ` V 1 1 1 ~ 1
_i I l / / / \ \ \ l i I I I ! f 1 1 / l! 1 l ~1 / 1 I y_..` ' jf'/i / ° ° \ \ \ ° \ 1 1 \ t~ 1 1 I I / l I / / l1 b--I l I I\ ° \ \ ° \ \ \ \ 1 \ \ \ \ ~ tp
l r l 1 r r 1 1 ~ \ 1/ 1, 1 i / / / \ 1 1 i i/ l r r r r
I r ~ vv vv ~ V / li 11 A ~ c I e~ ~ i j 1,- 1 ~ / / / f 1 1 1 1 l I l l/ -
, I / \ 1 / i ; j ~ \ \ ~ ~ 1 t' . / / . / 1 ~ ` \ f i i I r l r 1 1 1 / i i i° /
/ / v V11~~~ I jl ~ ~ ` I'~ ~ i + I i ~ I / i / / j A r i ~ I /l / l
/ / e`_ ~ 11 \1 111 1 1~"~., ,+r I q 1__.", ? ~ ~ / ee { 1 I ~ ~ / / V A 1 1 V I ~ ~ i. } i f 1 l / / 1 / l / / \ 1 1 /T1 1 / • / to /r~ . t 1 . ~ 1 I , I I / I / / e~. I t 1A ~ / / r r i a , `°e` v 1 ~7 1 I ~ I i ! ~I _ v \ ~ _ A v I ~ i i 1 1
, / / / / 1 r. •l„rr.,: r If . 1 -_i' / i ~ / vv 1 \ I , I ! r + r / 1 f { / / + 11 11 J~` y. l ~ `o, `w`:/ \ 1 / ! T-~!~ 1 / : ` ° \ 1 I~~ I I + r rl i + \
! / I/ /1 1 / / , / / / A ~ ~ / ~ 1 T` L - v '4 ` ~ ~ ~4~ ~a l i , ) f-~.. / \ ` ` V ` 1 ~ VIA I i l~ 1 ! 1 1 1.
! I ! -,.r J l / ! , 1 t , 1 f I € ? e / ` ~ A 1 i ` ° ~f r/ UT~I ~ ~TE e A `V A V ~ . I I I A 1 \ V `e
r l r l'' / + f rr?-~ ! r ` - I ~1 , ''/cr-~ r v v I S. E ~F,M~ENT P. v v v ~ / 1 / r fl 1 i 1 ~ ~ v ~`4 ~ , , 9~'C9E ~ ~ v v 1 1 vI v\ ~ v r r / / / J r l/ ,~l i~`f \ti \ 1 ~'-1 , ,f ° i / /r . / \ ~ 1 d \ ~ \ \ \ . \
d 1 / , 1 I dtil~ J! ~ I I ! / r / \ \ \ ~ \ 1' 1 , / ~i • - \ \ \ I 1 y 1 \ \ _
l l / / ' \ f f1 !r/1,S I i ` l>,r e `,'It/ e 1 s/ _ , 1 / l./'^ \ \ \ \ \ _ / ! l / ~ r f ) l : I@O I 1 ~Ir~ r f ` ? e r ,i / / ~ \ \ \ t 1 1 \ ~ \ e\ \ ~ e
/ / / / ~ / / ` I' f I)! j 1r lyf 1!,~ I .,.___1 t\ ' '1 1~ ^•.i \ \ \ \ 1 1 ~ \e \ ~ 1 / / 1 ! ! f ! 1 ~ r A•\ ~ \ ter-.' ~ 1 ` \ \ l l r l 1 f rr~fffr~r +~'..I i, \ t o ~ .I \ \ -a • / / \ 1 . - - -
/ / / / / / 1 I it + 1 ! 1 r ' , ~ ,,r`l ------f ! ~ 1v~ \ i \ - / , 1 1 ~ ? ~„a'ev / / / / / / I I f j f f I 4. t`• c \ \ \ _ / ~ "'?j ~ 1 1 1 i ~`e e \ i
• ~ , / 1 i I ~l J i ~ I r I IA. \ - - r r, v>~ `v v v,r / ~ <t_ ~,ry / , - / / / / / I I (11 1 ! f 1 f 1 \ ~V•"'. \ , \ \ / ~ • ,v / ' I I 1 eA I r ~ ~
' ? / / I I I I/ ! i 1 1 1 ; '.9 ~ ` i \ ~ \ f\ e \ / rte, ~ ° . 1 r / / ~ ` _ -
/ a / / j ~ 1 I ~ i I I I II I i I i { ; 1 1e' . ii \ ` \ ' f' \ i \ \e' / o°'• i / r~ . ~ i i / l / - t } ;i~\``\ , / ~ / , 1 1 I ~ I I I II I I I i I ° v ?~;p`,,e .v t 1 \ \ tV e,~ r^`" ~,y., / / v`~ _i v / / _ _ \ \ \ \ \ \ \l \ \ \ \~j \ \ \ \
s / / / / I 1 I { i III \ t---° 1-er ` ` I"` / 1 / j--- _ _ / , ` 1 ~ ~ I 1 I \ ~ 1 ! tt r• t\ .°`i~J` ~I I, /°,'1 4// / / / J/ / ~ / / / / ~ - -
' - _ ~ _ ^ \ \ a\\p\\\\\\\\\\ 111\\`\ \\1\\\\\ 11G~N
r / / I I it II I ~ i \ \ \ p ? t` ( > / 4/ / / / P m - ° / ! I 1 _ v v v \ ~ \I , ~ / / , / , _
/ I ~ ~ _ _ i \ ' - / / _ - \ 1 \ \ \ \ \ l 1 1 1 1 I~ Y } 1 I f I 1 11 , ' Oy°i A +
1 i l ° f I 1 1 \ --=~~.~_e ~ ? ~ Ve? ve ,^J1, ~ ~i~~'~ ° / ~ f i i i , ' l / t / i l ° / i j / ~ ~ 1 / , _ r' ~ \ ° \ \ \ \ \ \ 1 1 1 1 1 1 ~ 1 1 i 1 1 1 I 1 I I \ 1 i / ,J \ \ \ \ \ \ \ \ 1 1 1 1 I I I' I 1 I' I c, I I 1 3~ yZ~ Ob
I r-\ ! i 1 ~ n r / /Q _ i i r''~ 1 1 \ 1 \ \ 1\ ~ 1 1 ; 11 I ~ j ~ 11 ~ ; 1 } ~ rl j 1 1 t ~ ~j°~3'~J'
l l % \ + AV A AV v. A j-:zb r'~'~~ ,J ~ I I C t ' 1 f 1 ? / l ) I r I 1 / / / / / I \ \ \ ee \ t' ~`~.`y. .,3 v. \ 1 I / / ! / ~ ~ l / ~ / / / I '~L _ f / / / / / / ° \ \ \ \ ~ \ 1 I \ 1 1 1 I I I 1 I I I 1 / / ~ 1 Ai°Aaree+#
} ! 1 i !III f 1 I I _y. / ~ v V vim". v ? ~ ry ~"C I I / ~ 1 ! / / r ~ I / ~ ! / l/ ~ / t 1 + I ! I / / ) I~ - I ~ / ) 1 1 l l i i i I I 1 1 / , r'' ~ v ~wA vv v 'i.~~ ~ / /1 .r ~ / I / Ill/ / / 1) l + I l i NB I I + l ~i 1 p / % ,i ~ / / \ \ \I 11 t 11 \ \ 11 1 1' 14 1 I ~ 1 11 i I I ' I II I r ' ~ 1 ( ! tt 1 ~ /
1 i r I I f I 1 i I I 1 1\ \ / / _ ~ \ \ ` ? o'° _ ~ ~ / 1 r.. r f•< l J l r I ~ l l l/ I/ I ~ I I S I / / ! i ~ + f 1 / % l r I i + I \ / / / ~ eA\ V ? ? ve v \ i"~ / vl -.,L, , ~ ;i ! ll! /1/ f r l f I 1 1 i ~ I I \ ` / / \ ` \ \ \ \e ~ \ ~ I } I ) ! l l l l ! l ! f f rl r I I 1 I j I ! ! I 1 I _ _ ! % / , . , \ . \ \ \ \ \ 1 ~ 1 i i I I' I I`` I I + I ~ I i I it 1 ~ I I , i i i ~ru~
I j r i { I { I 1 \ \ \ ss' s \ \ \ \ \ \ , \ \ [ , / / r' ! ~ , ~ I l I l l l / I ) 4„~, I \ 1 t 1 1 1 ~ \ 1 1 1 .,,v / ~ ~ / /i ~ ~ \II 111 1\I I 1i 11 l'~ I I II 1 1 I I ~ I I 1 ~ I ~I I i t,'1 /l r if ! l / > ~ / t A V 1 t I t I I I 1 I ~91 f 7 ~ / IrIp1~I~1~Y ~ ~ / \ \ \ 1 \ 1 4 1 1 I I / t/ ~ ~ l_, ' vv v\ v v v v \ 1v 1v 11 11 ~ 1 X 1 1 1 1 1 I~ 1 1 1 I I I I I I lrr ~ l r/
/ 1 to I 1 \ ~ \ \ \ T ~ \ \ 1 1 \ A f / / n 1 1 v vv vv ~3 - \ V A v vv vv vv A `v A v A \ / / t ,r ~ ~ - , - - 1 1 ~ \ 1 1 1 I \ A \ 1 \ y~' 1 I _ ~ ' ~'°v \1 \1 1 1 1 1 ` 1 1 1 1 1 I I i I I I I I I I ~ 1 I I j I / l
r t 1 \ \ \ ~\\IIIIII'I1t11 III Irrr 1111!// 1 i + / ! ~ v v A vv vv y i 1111 I11~ Iiilllll }~I~1 l it tJli~/l/li ,
/r / V 11 A\ v .~\v \ I I / " a •,.I~1i.,,1,1 1 A l - -_.-.____A_ A ~ A e 1 1 / \ \ 1 \ \ . ~ 1 1 ~ ! i i 1 1 i I / / / / ! / \ 1 a .,,.~1~`~ \ 1 \ 1_ _ _ \ ~ \ 1 1 1 1 I I J I t~ ~ v 1 v v 1 1 1~ IIIIIIilililll 111 ltll r rllfJi/ / 1 1 1 f I 1 , 1 \ \ \ 1 1 1 1 1 1 1 I i l l l i I I I I Ir I I!/
rI % \\e\\ j I 1 0 j ! j ~ / l l ~ l I I ~ / EXI~`fll~Sk10 N $I \ iI 11 ~ j ~ (~:,_*?~~rq,``~, \ \ \ \ \ `e\ \ 11 It ) / v ? ` I l 1 / / / , / / / l l i f~ ~ / r_ 1 1 I A , ,_,s,.,1~_.. ~ ~ V A 1 A v v ? \ 11 II 11 ' ( i rr i i i i A v~ 11 i 11 ~ iii~l~i~ilii~ I~i~illr~"i~~iiii I`~(/i i ~ l TT' 1 1 f 1
I \ \ . \ ' r------~. 1 / / / / / / 56 IN~XI h~(.2H NNE! 1 ! l 1\ ° 1 t \ \ \ \ \ 1 ` \ \ \ \ \ \ . ~ \ 1 \ \ I e / i 1 1 1 1 1~ I 1 I II Iill I i II1 t III i I I I 11 .L.. \ ~ 11 , i 11 ~ ~ ~ 1 1 1 11111 IIIr,~iiiliiili~ill i~iliiiil~ii~11
~ ° ~ / / / / / . / / / / 6H N L RESTORED r ~ 1 r / ! \ \ \ \ \ \ \ _ , \ \ \ \ \ \ \ \ \ \ 1 \ 1 + ~ 1 1 I I illlillli l'rlllillil'i + Ilillll+°/' 1\ ~ I \ + ~ ~ 1 i i i ~iiii ii~ilr'rlil~isl'ifilii°~Iiiiil\I+~ll +
- r \ v v 1 V \ / f/ j i I i II I IBlrrjr~Jr rll Ir'llrli>Vtll III t~ I I r I
e ~ d_f- y A \ 1 ~-r'~ V , / f r ( ~ I I I i l!I 1 ll /r l i i l l f l Ill r I I I 11!! i I f ° ii r\ \ 1\ \ i i / I t/! I ii l IIIIIIIrrr I Il f111lllli'i (r I P I I I I i
! / / \ \ \ ~ / i i / / I / / / ~ l; / / / 1 f + ~ I i I i I I I (f \ \ \ 1 \ 1 11 ° \ ` \ ` \ _ e\ \ I ' \ \ \ \ l (r Illllii/i'~i/iii I'ilili~i~(llrfifl`°i/I+I 11 V) ~ \ \ \ / / / / /rill rrll lllllrll r l r r I Ir
/ \ \ i ! / / / / / 1 f / l 1 / / / ' ! / 1 ~ I I ! I ~ I I I i ~ I / ` \ \ \ \ \ \ 1 \ 1 \ \ \ \ \ _ _ _ ?e e\ \ iL , / . ` \ \ r l/ r/, / / / / f r / / l / ! I l r II i I \ \ \e\\ \ ` 1 1\ \ \ . \.l~ ! ! \ \ \ I 11 ~///lre/ ° IJri 11 ° I / ' i f )iIII Ilii i/ `1\\"\\\\`\\\\~\~\ 1 \ e ~ • - \ \ / / P I I I~ i r r J l l \ \ ~ / , / ~ Illlrllr/lfrt lrl fi' Illr (rtr` / °r
/ \ \ \ r / / ~ r l / l l / f ! r r t ~ I I \ / ~ , / ! ! III ! / / \ \ \ ` ~ . ` \ \ ,-1 . \ \ . I \ \ \ \ \ / ' / / i ~.Lrl.l.~i ° tom. r 1 ~r r J+ t_+ a--- -+-1~ ° 1 ' r i 1 1 f ~I l / l ' ` - - - , r-/ / r r I r / \ ~ \ \ \ . / / / / It r r! / t 1 I I i t I i r ! r r t l/ lI / s '
r~°,.,..// \ ` \ \ I + ! l ~ / 1 / l ~ l + 1 1 / f f 1 I I ~ t 1 _ ~ > ~ ~ ~ I I ~ I ~ I i ~ 1 f f \ \ ` \ \ \ 1 ; i ~ i, \ \ \ \ \ `ee \ . y'; / \ 1 \ ~ r / / + / / f ! i I ~ i / / / / / f 1 ! I I I I) \ \ \ \ \ \ \ \ 1 ~ ~ b\ \ \ \ m m \ ~ . y.; r\~~"~'aF"°\"v"."\\.,".^ ~ ~ ~ ,e'1~...s fr_y,~ /®_/I~~~/~~ ~1s1~+~ i ~~pl ~~l t 1 7 ! ! ~l ! e > _ ~ '"s\~' """v~~ ~f ¦ a..I~ei1Yr p ® ,e~~ ~ ~r, _°B,t + I ~ a .J 1 l I Ll / e.~. ~~r
/ \ \ \ \ r r l l r f I I + 1 1 1 I I I 4 I _ / / _ 1 / r i 1 I I I + ! ` ` \ \ \ \ ~ ° _ 1 I I I ~ i .~,~_._l._1 ~~1_r=1__ :per \-~.-\~7= ~_S-. W ~ A ~.1"_~_'c-----'°°~_ 1~ -:1=~1- ~.e - ' ~ . - ~~`e ~ ~ ~ a:\' v. 1 \ \ frl 1 I I 1 1 1 I \ i I I ! ~ I ~ ~ . e / / / l!~ f!'~III /flZ \1\\\1\ \ \ \ ``,q
/ 1 \ r + r 1 1 I I I 1 l 1 1 1 i 1 I I 1 1 . ' / / , + r ! I t \ ` \ ` \ \ \ \ ° \ \ 1 1 1 1 ~ \ \ \ \ \°\\r\ -i/ ,ice ~ i///`° i/i ~/l%%jl/l/1/~lri (111 Iit'lllr illlrllf/I!~/i!'!l%0~~1// \ \ \ \ \ \ \ , ~ / / / /l! / / I1 /i t ! I I ~ 11 ! t 11 ~ f I I I r i/ s
1 \ I f I l i I ! i \ 1 1 1 \ I I I I i I 1 ~ . . / ; , , , r) I I f 1 y . \ \ \ \ \ 1 \ 1 \ \ \ ` \ . \ \ i ° I \ \ I f j i I 1 ° 1 1 1 11 1 j1 I I ti 1 i / / / / / / ! ! r I I it i°f \ \11\\1\\ 1\\\ 111 m~ ® ~ _ _ , \ + 1 I r I 1 1 1 1 1 1 I + 1 . / / / / / ! I ! i I \ \ 1 \ \ 1 \ 1 1 1 - - \ ? \ ~ \ \ \ \ 1\ _ ,i i , / / ~ / / / l / / l I ! t r 1 1 1 + i ' I I i 1 I I I I f l ! III + I I r lI / l ' Q ~ l.~ / I l I / / t 1 1 I I I I•t / \ \ \ ~ _ i / i % I' / / / / / / / 1 ~ ~ / ~ ! i i 1 ! I f i I j I ! j I I I I I I III :
1 I 1 I I I 1 ( 1 1 1 1 1 1 1 1 1 I I I f / / i / / r r / + i / \ \ 1 \ \ 1 1 11 \ \ \ \ \ 1 \ \ \ \ ' _ - ~ q` \ l\ f - 1 ( 1 \ t 1 1 1 1 1 I I 4 (I i / / / / / / / / ~ ( / 1 ~ / ? 1 1 \ \ \ \ 1 \ \ \ \ \ \ \ _ - - \ ` \ \ \ \ \ \ \ e / / / j / / / / / / / / / t l r / / i l / I I I f ! i ! I I I I I ~ / I \ \ \ ° \ ° \ \ ~ • / ' / / / / ' l t l J J l 1 / l / / / ' ' + I I I I I I I I I l ~ Q
f i \ \ I I 1 ' \ \ 1 \ \ 5 I 1 1 1 1 1 i 1 i \ 1 ` i / / i / i o t/ 1 / ! ~ i + 1 I \ \ 1 1 1\ \ 1 \ 1 \ \ \ \ \ \ \ \ \ \ `e \ \ ~ ` \ ` \ ` \ ~ ~ I ~ \ 1 1 \ 1 \ , 1 \ i i 1 I 1 1 1 1 \ ~ \ ~ \ I , ~ , / / / ) I I) ~ ) /`e \ \ 1 \ 1\ \1 1 1 \ 1\ \ \ \ ` \ \ ` ` \ ~ \ \ \ \ / / / / / 1////I I r~ IIlII IIII Iii11 filtl(Irl/! ® LV • \ \ \ \ hh f / > 1 / ! (i l I l ~l' I I ! I I 11 I 1 \ \ \ / / / ! I / % / I j i j III
~ f I ~ \ 1 A 1 1 \V 1 A 1 1 1 1 i I i i l i 1 AV A \ _ / / / i i i / / i / A \V A \ 1A11 \ \ \V A Av ee v - _ - ' vAvv A ~ ) ! I \ ~ 1 \ 1 + 1 1 I 1 i { 11 \i . / ; / / ( / + III + / 1\\1 \ 11\\\\\\\\ . l`J1 l \ \ 5 4 \ 1 1 I i \ \ / / / / I / 1 1 \ \ \ \ \ ` \ / ! / / //1 /t / / ! / l fl I IIII 1 II Ij1 I ~ U1 ~ ° i\\\\\ 1\ s\ \ / ,i ~ / / ~ t j 1 I 1 ~ I ! I l / j ~ /i /l /J I I I i i I ~ i ~ 1 I j ~ 1 I~ II `1 ~
-,~i ) ! --e` \ 1 1 1 1 1 \ 1 1 1 I 1 1 1 1 1 1 \ 1 J / ~ i i / / / / ~r/ / 1 ° ! I ~ t I \ \ \ 1 11 11 11` \ 1 ° \ \ \ \ ~ ^ ~ \ \ \ \ ~~p? e' \ \ 1 \ \ \ \ 1 1 1 1 1 I I I I I 1 1 \ \ - ~l / ~ , / l l / I I l l \ 1 \ \ \ \1 \ 11 11 \ 1 1 \ \ \ \ \ \ ~ / ° \ \ \ \ /mss/ / / l / /I(!//lle/l ! / , /1111 I I II II `l°\\\ \ / . r e i Jll /llrll//A'/°/ /'i'JJI+I full Iil~ 11 1~~
I 1 \ ° 1 \ ° \ \ \ 1 1 1 1 i 1 1 1 1 1 1 \ + ,/1 ~ ~ / / / / i / ° / / / ) / ° \ \ \ 1 \1 1 \ 11 \ \ 1 \ \ \ \ \ ~ \ \ \ \ 1 1 1 1 1 I I I 1 \ / , / Vii/ / / / / \ \ \ 1 \ \ \ 1 1 1 1 \ \ \ \ ` \ e ~ - - - \ , ~.--"e\ \ \ \ \ \ \ • • \ / ~ / / / e// //~///,~.;//!>/J~I~I 111t11j11 W \ \ \ \ e \ \ \ > / ~ s / / / / / I J//> / / / / i i/ /a / fl I I 1 I i i~l I1
i ~ V 1 1\° 1 1 1 1 i i 1 V v I "~J5(j- - ~ / 1 I 5 V 10 V A V A . VA \ 1 A v i __v ~ 1 \ 1 1 ~ 1 t I 1 \ 1 \ A , / / / / / / ~ 1 1 V 1\ V 1 A \ V 1 ` v ~~e i.a ~ / \ \ 1 1 1 \ t 1 t \ \ ` \ / i / / / i / / / / / / / \ 1 \ 1 \ 1 \ 1\ 1'1 1 1\ 1 \ \ \ ? \ \ \ \ \ ? \ \ \ / / r r / 1 / / / i / ~ / / / / ! ! /
\ \ \ I \ \ \ \ r ,o r' / / ' l ll l ! / / % / % i s / / / / / / i r 1 I I 1 ~ LL. \ \ \ \ \ \ ti / ! ! / / / / / \ \ \ ~ \r \ \ \ ~ ~ / / / / lJ ~ / , 0 s / / s' / / / / \ \ \ \ \ \ \ ° ~ / / / l / l ! It / ~ / ii / j ~ / I / ! I
\ \ i / ~ \ \ \ 1 \ 1 \ \ \ 1 \ 1 \ \ 1 \ \ \ i f I / / ? / / i pd / / / \ \ \ 11 \ 1 1 l1 1 \ \ \ \ \ \ ` ~ ~ ° \ \ I 1 1 \ \ \ ~ \ \ \ \ / ' / / / ' l ' l1/ 1/ ll 1!/ / / ' /0 / /S / \ \ / I 1 1 ! , / / /I / / I4J1 \ \ \ \ \ \ \ \ \ r\ ° \ \ i / / / l / l / I 1 1 ! rr t ! r i 1 / 1 , / s / s
( \ \ ~ \ \ \ \ i~.~.ti 1--r ~ I / / t / ~ / / 1 1 \ \ 1 1 \ \ \ ° \ ` \ ~S ~ / 1 I 1 ° 1 d~ \ \ \ \ \ \ 1 \ \ \ \ ° \ \ \ ~-I i i Imo/ / / / ~ / / ,i ~ i~ / / / / % \ l 1 U 1 ° \ \ \ \ ?e \ i' ° ~ i'> i° ~ \ 1 1 1 1 \ ~ \ t \ \ \ \ \ \ \ ~ \ \ \ \ 1 \ \ \ \ \ -'i ~'i / / / 11v/ / / 1 / / / / / ` \ 1 1 \ 1 \ \ \ \ ? ~ _ / / , \ 1 1 i 1 1 1 1\ \ \ P \ \ \ ~ \ \ \ \ \ \ \ \ \ i / / / n \ / / /i ~ / / \ 1 \ e e - . . . / / \ \ \ \ \ \ \ "~i`~~-- i / / % / / i i / j \ 1 11l` 11 1 \ 1 \ \ e _ °//i 1 1 t 1 ~ I 1 1 1 111\\ P\ \I`~ \ / % / / I ' / / 1 !Il 1' I 1 f B f ~f''f ~i / ! \ / , / / 1/1I~1!'1f'1y(fltr'!!I 1rr/ f/ i ~
\ r ` ~ \ \ \ \ \ \ \ ? / , rte / / / / / \ 1 11111 1 1 \ \ \ \ \ e ~ ~ . / \ \ l 1 1 1 1 1 \ \ \ \ \ \ / / ~ i / ~ / i / ~ i //i / J! !l ! lip ' t ' 1 1r 1 t l ° 1 I I I i ~ ~ 1 ~ / / / / s° ~ j / 11 1
\ \ \ \ \ \ \ \ \ \ \ -J_`,._ /'~~j / t P, i r / j / / 1 1 \ l 1 11 11 1 \ \ \ \ \ ~ /,r/ / / _ \ \ \ 1 1 1 1 1 1 l 1 \ \f \ v\ \ '°J \ \ \ \ \ \ i \ \ \ \ \ \ \ \ \ `e i j / / / 1 ? ? / / / / / / 1 \ 11\ 11 1 1 1 \ e e ' I ~ ' / / / ? \ \ \ \ \ \ \ \ \ \ \ \ \ 1 \ \ \ \ \ \ \ \ \ \ \ \ \ i - ''~I / / / ~ / / / / / / 1 1 \ 1 1 l 1 } 1 1 \ ? i,/``__1 / / / \ \ 1 1 1 l \ \ \ \ \ \ / i / / ' !ll jtlt r IIII f Ir I, ~ i , ~ ILJ \ 11 \ \ \ \ \l\r\ \ \ , 11'!'(r,'t r fiii Ii{itI r I r r /1 / / ;I / / 1 \ \e\\° ; / j,/,/ />l 1it f 1t11 I ifrl I
\ \ \ \®\I \ \ \ \ \ \ \ \ \ s / l s / / % t rr r ! r t/ l/l!~l f f I I I j 1 it \I ~
~ ~ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ e? - / s / ! / ( 1 / l / I / / / 1 1 1 1 1 11\ 1 \ 1 \ \ ` ` ` \ ~ / i ` / / \ \ \ \ \ 1 1 \ \ \ \ \ \ 1 - °a ~ `o \ \ ~ \ \ \ \ \ \ \ \ \ \ e\~ .~•t''' i'J' ,i' / ~ < ~ ) 11 j ! f j / 1 1 1 \ 1 1 l 1 \ \ \ \ ` \ \ `e \ / ii"' / / / \ \ 1 \ 1 \ \ \ \ \ \ \ \1\~•\ \ / ~ / I / !/,Ill//l/IIII 111 \ ~ \
\ \ ~ \ \ \ \ \ \ \ \ _ / i ~ / / l l 1 / / / / / / / / /I I i ~ + 1 1 \ \ \I Date: \ \ \ \ h \ \ \ \ \I \ \ \ \ r ~ / , , / l I I I I I I / / / I I \ \ \ °s I \ \ JUNE 20V8
? `fie \ \ \ \ \ \ - - _~__...-r i / / f I/ , \ \ ? / i' i \ 1~1
\ \ \ \ \ ` ` \ ` `e _j - i - % / fir/ / i/ ~ ~ 1 \ 1 \ \ \ \ \ \ \ \ \ j ` ~i' \ \ \ ` \ \ \ \ \ l 1 1 1® ~11 \ 1 1 1 ® \ \ 1\ \ \ ` \ ° _J / ~ / ! 1 I I 1 1 I \ 4\ \ \ It\\ \ Scale: I u = I
~ ~ \ \ . 1 1 1 1 1 1 ~ \ 1 \ \ I \ \ \ / ! I 1 1 \ \ \ \ ° ` \ \ \ a \ \ \ \ ~ Drawn: 1 \ \ \ \ \ \ . ~ I ~ 1 \ \ \ \ \ \ \ \ \ a \ \
1 \ \ \ \ \ ? ` \ ` ~ i / / / / / / _ `e \ 1 1 \ \ \ \ \ \ e_ / / ° _ " _ ` °1 1 1 I 1 1 l 1' 1 1 1 l \ \ \ \ e \ t ~ ~ - / r / r' ` 1 1 \ \ ~ / / . 1 1 I i I 1 1 l I1 \ \ \ ° ? ? ? , i ~ /1 / / / / / / \ 1 1 \ 1 \ \ \ \ \ ` I° / ~ \ \ I i 1 i I i I 1 i I' 1 1 \l®\ II ~ it l l\ 1 \ \ i•\\ \ / / 1 I 1 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ,
\ \ \ \ ? \ , a \ `e I - - ~ ~ _ I ,/1 / / / ~ / / / / / \ \ \ \ 1 \ I 1 1 \ \ \ \ e ~ / \ I i I I 1 I I t 1 \ \ \ 1 \ \ \ \ h \ \ \ \ \ \ \ / I 1 1 \ \ \ \ \ \ \ \ \ \ \ Checked:
\ \ \ e\ ee ` e ~ ~ ~ / / p~i ,p/ / ! % / i'~ / ~ 1 \i ° { I 1 1 1 1 \ \ \ i % i / ~ ~ ° ° \ 1 I II I i j i I 1 1 l \ \ \ \ \ ? e e e e _ ~ / \i' / / J i I I 1 \ e /I / / -e \ ' I II I I I \ \ \ \ \
\ \ ~ \ \ \ : \ °------1- ~ ~,y a,"1 s 9 / / / / \ I i 1 1 _ - i i / i 1 I I I I P _ \ \ \ ~ \ 1\\ \ 11 \ \ \I i ~ Project No.
\ \ e . / , I l \ \ \ \ ea \ 1\ \ ev e\ ~ ! I ! 0 ~ / / / / , / ~ 1 I I I I 1 \ \ ' ~ i 1 I I 1 1 1 \ \ \ \ \ \f \ e e e _ ~ i •-`j' / / ! / / ' / / 1 ~ I + + I 1 i \ \ \ i / ! / r'~----.___---___ 1 1 I III 1 1\ \ \ \ \ \ \ \ \ \ P
\ 1 \ \ \ ~ \ < \ 1 v~ ~Ia 1 lati ia~°~ 1_~,~'~ \ . ' V V °v ~ - ~ I ~ I 1 11 I I 1
\ \ \ ~ - ~ / r~ / / J / / / ` 0 r / / I \ ` - ' / i / - \ I `(i'i ili€':, 1 l \ \ I 1 i 1 I t 1 r ~ -I ~f'r'~i r--•1 \ \ / ~ i I 1 0 1 1 ~ I I Computer Dwg. Name
e -I`,\' ; '`•,,1`; / / / I r< l 1 r \ . / , 1 } I.<>'`>< 1 1 1 1~ 1 I i i i , , \ ; , ; / ~ r / ) I . : ? / ; \ I +:fi:; is 1 \ t I I i I \ { p` , / / / ; I ) d 1 ) 1 I \ ' , + ! ~ 'sai 1 1 1 I I 1 ! + I I I t I I l t 7 I I 1' ~ 1 / \ / r 1 / i I I I r 1 15-09 wQ FLAN9.DWG
~''--_~``e `e I`'~`~~ t. / / / / / / n!. + ! I \ \ \ I Y I, r{I 1 ° II I I + I ~ I 1 I •~'e `e I ~ .~..,r / > / j / , ' ! r l`! / I \ e~ / / / / 1 ) i~I I ! i I I i ) I I 1 \ ~ \ \ - l / I / / r l
•..l e i i ` % . / / ! ° t l \ ` - / / , ~ 1 ~ I ! I i I 1 1 + I I I I ~~~i \ `e I li' ~ / / / < ~ I + f I ` _ / i / + / ! I ~ I I I I I 1 1 l 1 ~ ~ / / / , / fl I i "•e 1 \ \ ~ . i / / i I I i I I I 1 I 1 i 1 ' 1 l 1 1 ' 1 I \ \ I \ \ \ ~ l / J / / / l i ' / Sheet No:
\ \e` _h~.L1 I i l( ! ~ jat 1 \ ~ i ! l/ 1 j ~ iI i I I I I i I I i ~ 1 1 1 1 1 NORTH ~ - _ _ - ? \ `ems \ j!r / ~ j ,r' \ r i ! + 1 l,t \`e - ~ ' ,i''' \ + / ! / / ®1 ' i 1 ~ I 1 I ~ I ~ I I ; ' 1 ~ II 1 t
l
100, 50, 0 100, 200' - Ar%
1 t \ \ \ \ \ \ ~ ° a as ° ° . /
Of
- - - - - - - - - - - - - - - \t \ t\ \ eee _~h e__--' / /i /i i i /
SCALE: 1 100