20100040 Ver 5_401 Application_20110611

¦ O'BRICN 6 GCRC I D - OO L?o us
June 28, 2011
Ms. Amy Chapman kN NCDWQ, 401/Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650 h 2 9 2 0 11
RE: Riparian Buffer Authorization - PCN . WA
Talecris Biotherapeutics, Clayton, N.C. s B?
FILE: 12335.47528.002
Dear Ms. Chapman
On behalf of Talecris Biotherapeutics please find for your approval the enclosed Pre-Construction Notification
and supporting documents (five sets) requesting Riparian Buffer Authorization (only) for a culvert replacement
on the Clayton campus of Talecris Biotherapeutics. This submittal is in keeping with an on-site inspection made
on November 10, 2010, which was attended by Martin Richmond and Eric Kulz, NC DENR Division of Water
Quality, and by James Lastinger, US Army Corps of Engineers, as well as Wyatt Brown, Brown Environmental
Group, and Dan Simmons and myself representing Talecris.
The project detailed in this application seeks to replace a failing culvert inside the Neuse Riparian buffer
outleting directly to an existing pond. The culvert was constructed prior to the existence of the Neuse River
buffer rules. From the November 2010 site visit, we understand that the pond is now protected by a 50-foot
buffer. As discussed during the site visit, we propose to install a channel through the buffer at the same location
as the failing culvert capable of safely passing the 25-year return period storm. It is proposed that turfstone
pavers be used as permanent channel lining, providing a stable, pervious surface, and allowing grass to establish
in the channel.
Furthermore, we propose returning the existing gravel driveway to a pervious grass surface through the
riparian buffer detailed within the limits of the impact figure. To maintain access to the existing Johnston
County lift station to the north of the site, a new driveway is proposed to the west of the culvert, outside of the
existing buffer. These actions shall result in an impervious area within the project limits of 19%, a reduction of
52%.
If you have any questions, please do not hesitate to call or email me at the contact below. Or, contact Gene B.
Cobb, PE, PLS, whose contact information is listed in the PCN application.
Very truly yours,
O'Brien & Gere Engineers, Inc.

Daniel C. Simmons, EIT
Project Engineer
ph. 919-783-7777 x.11
chad.simmons ?%ob s.com
Encls: PCN Submittal Documents (five sets)
2610 Wycliff Road, Suite 104, Raleigh, NC 27607 1 p 919-783-7777 1 f 919-783-0757 1 www.obg.com
360° Engineering and Project Delivery Solutions
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Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre-Construction Notification PC Form
A. Applicant Information
1. Processing
1 a. Type(s) of approval sought from the
Corps:
El Section 404 Permit El Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps? ? Yes ? No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
? 401 Water Quality Certification - Regular ? Non-404 Jurisdictional General Permit
? 401 Water Quality Certification - Express ® Riparian Buffer Authorization
1 e. Is this notification solely for the record
because written approval is not required? For the record only for DWQ 401
Certification:
? Yes ® No For the record only for Corps Permit:

® Yes ? No
1f. Is payment into a mitigation bank or in-lieu fee program proposed for mitigation
of impacts? If so, attach the acceptance letter from mitigation bank or in-lieu
fee program. ? Yes ® No
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below. ? Yes ® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)? ? Yes ® No
2. Project Information
2a. Name of project: Talecris Biotherapeutics
2b. County: Johnston
2c. Nearest municipality / town: Clayton, NC
2d. Subdivision name: N/A
2e. NCDOT only, T.I.P. or state
project no: N/A
3. Owner Information
3a. Name(s) on Recorded Deed: Talecris Biotherapeutics, Inc.
3b. Deed Book and Page No. 2871, pg #0336 U11 ?UL5
3c. Responsible Party (for LLC if
applicable): Mary Kuhn, EVP Operations JUN 2 9 2011
3d. Street address: 8368 US 70 Business West NR _
3e. City, state, zip: Clayton, NC 27520 erar
3f. Telephone no.: [phone] #4802
3g. Fax no.: [phone]
3h. Email address: [e-mail]
Page 1 of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ® Other, specify: Owner's Representative
4b. Name: John Baron
4c. Business name
(if applicable): Talecris Biotherapeutics, Inc.
4d. Street address: 8368 US 70 Business West
4e. City, state, zip: Clayton, NC 27520
4f. Telephone no.: 919) 359-5454
4g. Fax no.: [phone]
4h. Email address: [e-mail]
6. AgentlConsultant Information (if applicable)
5a. Name: Gene B. Cobb, PE, PLS
5b. Business name
(if applicable): Triangle Civilworks, PA (for O'Brien & Gere Engineers, Inc.)
5c. Street address: 211 Tyler Drive
5d. City, state, zip: Smithfield, NC 27577
5e. Telephone no.: [phone]
5f. Fax no.:
5g. Email address: [e-mail]
Page 2 of 11
PCN Form - Version 1.3 December 10, 2008 Version
B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID): Pin#'s 167800-33-1200 & 167800-32-1371
1 b. Site coordinates (in decimal degrees): Latitude: 35.6177 Longitude: - 78.4160
(DD.DDDDDD) (-DD.DDDDDD)
1 c. Property size: 127.12 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to Un-named tributary to Neuse River
proposed project:
2b. Water Quality Classification of nearest receiving water: WS IV, NSW
2c. River basin: Neuse River
3. Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
Existing pond on Talecris Plant Site pond has multiple influent culverts directly discharging stormwater through the buffer.
These culverts existed prior to adoption of Neuse Buffer Rules. The subject driveway culvert is located on the west side
of the pond and is failing - collapsed in some locations with indications of piping around the culvert. There is an existing
10'-12' wide gravel driveway through the buffer on the south and west sides of the pond to serve the existing Johnston
County wastewater pumping station to the northwest of the pond site. The dammed portion of the pond to the north has
an overgrowth of trees on the dam. There is a concrete outlet box and outlet pipe to the north as well as an adjacent
emergency concrete spillway.
3b. List the total estimated acreage of all existing wetlands on the property:
2.5 acres
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
6,700 linear feet
3d. Explain the purpose of the proposed project:
Improvements to be made to the existing pond include the following: Replace failing existing culvert under existing
driveway adjacent to pond with open channel designed to safely convey the 25-yr storm. Remove existing gravel
driveway inside riparian buffer behind trailers and return to grass as shown on Figure F-3.
3e. Describe the overall project in detail, including the type of equipment to be used:
Culvert Replacement: Removal of ex. culvert and channel construction through riparian buffer by grading equipment.
Channel to be lined with Turf Stone.
Driveway Removal: Existing gravel driveway removal by grading equipment, haul off by dump truck. Seeding in buffer by
methods allowed by NC Sedimentation and Erosion Control Planning and Design Manual, latest edition. Only one single
application of fertilizer allowed.
Page 3 of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past? ® Yes ? No ? Unknown
Comments: Jurisdictional determination was made on site on
November 10, 2010
4b. If the Corps made the jurisdictional determination, what type
? Preliminary ®Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas? Agency/Consultant Company:
Name (if known): James Lastinger, USACE
Other:
Martin Richmond and Eric Kulz, NCDENR
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
November 10, 2010: See attached email regarding on site determination by DWQ.
5. Project History
5a. Have permits or certifications been requested or obtained for ? Yes ® No ? Unknown
this project (including all prior phases) in the past?
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project? ? Yes ® No
6b. If yes, explain.
Page 4 of 11
PCN Form - Version 1.3 December 10, 2008 Version
C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
? Wetlands ? Streams - tributaries ® Buffers
? Open Waters ? Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a. 2b. 2c. 2d. 2e. 2f.
Wetland impact Type of jurisdiction
number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact
Permanent (P) or (if known) DWQ - non-404, other) (acres)
Temporary T
W1 ? P ? T ? Yes ? Corps
? No ? DWQ
W2 ? P ? T ? Yes ? Corps
? No ? DWQ
W3 ? P ? T ? Yes ? Corps
? No ? DWQ
W4 ? P ? T ? Yes ? Corps
? No ? DWQ
W5 ? P ? T ? Yes ? Corps
? No ? DWQ
W6 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland impacts t4
2h. Comments:
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a. 3b. 3c. 3d. 3e. 3f. 3g.
Stream impact Type of impact Stream name Perennial Type of jurisdiction Average Impact
number - (PER) or (Corps - 404, 10 stream length
Permanent (P) or intermittent DWQ - non-404, width (linear
Temporary (T) (INT)? other) (feet) feet)
S1 ? P ? T ? PER ? Corps
? INT ? DWQ
S2 ? P ? T ? PER ? Corps
? INT ? DWQ
S3 ? P ? T ? PER ? Corps
? INT ? DWQ
S4 ? P ? T ? PER ? Corps
? INT ? DWQ
S5 ? P ? T ? PER ? Corps
? INT ? DWQ
S6 ? P ? T ? PER ? Corps
? INT ? DWQ
3h. Total stream and tributary impacts
3i. Comments:
Page 5 of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a.
Open water
impact number
- Permanent
(P) or
Temporary T 4b.
Name of waterbody
(if applicable) 4c.

Type of impact 4d.

Waterbody type 4e.

Area of impact (acres)
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4E Total open water impacts r
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then com lete the chart below.
5a.

Pond ID 5b.

Proposed use or purpose of 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
number pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
R Total
5g. Comments:
5h. Is a dam high hazard permit required?
? Yes ? No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
Page 6 of 11
PCN Form - Version 1.3 December 10, 2008 Version
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If an impacts require mitigation, then you MUST fill out Section D of this form.
6a.
® Neuse ? Tar-Pamlico ? Other:
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
Buffer impact
number - Reason for Buffer Zone 1 impact Zone 2 impact
Permanent (P) impact Stream name mitigation (square feet) (square feet)
or Temporary required?
T
B1 ®P ? T Ex. Culvert
Replacement UT to Neuse ? Yes
® No 1511 1239
B2 ?P?T ?Yes
? No
B3 ?P?T ?Yes
? No
6h. Total buffer impacts 1511 1239
6i. Comments:
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1 a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
Removing the existing driveway from the buffer and seeding with grass reduces the impervious area in the buffer. Use turf
stone to allow more narrow channel and allow turf to establish in channel.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Construction shall take place from existing hard, impervious surfaces in and around buffer, therefore minimizing disturbed
area in the buffer.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for ? Yes ® No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply): ? DWQ ? Corps
? Mitigation bank
2c. If yes, which mitigation option will be used for this project? ? Payment to in-lieu fee program
? Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank (
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter) Type Quantity
Page 7 of 11
PCN Form - Version 1.3 December 10, 2008 Version
3c. Comments: Not required
4. Complete if Making a Payment to In-lieu Fee Program `W 1A)
4a. Approval letter from in-lieu fee program is attached. ? Yes
4b. Stream mitigation requested: linear feet
4c. If using stream mitigation, stream temperature: ? warm ? cool ?cold
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non-riparian wetland mitigation requested: acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments: Not required
5. Complete if Using a Permittee Responsible Mitigation Plan (I4
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Not Applicable
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation? ? Yes ® No
6b. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.

Zone 6c.
Reason for impact 6d.
Total impact
(square feet)
Multiplier 6e.
Required mitigation
(square feet)
Zone 1 3 (2 for Catawba)
Zone 2 1.5
6f. Total buffer mitigation required:
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments: Not required
Page 8 of 11
PCN Form - Version 1.3 December 10, 2008 Version
E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1a. Does the project include or is it adjacent to protected riparian buffers identified ® Yes ? No
within one of the NC Riparian Buffer Protection Rules?
1b. If yes, then is a diffuse flow plan included? If no, explain why.
? Yes ®No
Comments: No new conveyance is being created through the buffer.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project? 19% a reduction of 52.5 %
2b. Does this project require a Stormwater Management Plan? ? Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: Flow out of the project area is not being
increased due to no new development of impervious area. Furthermore, this project shall disturb less than one acre. Both
conditions exempt this project from Johnston County Stormwater Management Plan Approval.
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
® Certified Local Government
2e. Who will be responsible for the review of the Stormwater Management Plan? ? DWQ Stormwater Program
? DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project? Johnston County
® Phase II
3b. Which of the following locally-implemented stormwater management programs ® NSW
? USMP
apply (check all that apply): ® Water Supply Watershed
? Other:
3c. Has the approved Stormwater Management Plan with proof of approval been ? Yes ® No
attached?
4. DWQ Stormwater Program Review CN /a
? Coastal counties
? HQW
4a. Which of the following state-implemented stormwater management programs apply ? ORW
(check all that apply):
? Session Law 2006-246
? Other:
4b. Has the approved Stormwater Management Plan with proof of approval been
attached? ? Yes ? No
5. DWQ 401 Unit Stormwater Review CN lA,
5a. Does the Stormwater Management Plan meet the appropriate requirements? ? Yes ? No
5b. Have all of the 401 Unit submittal requirements been met? ? Yes ? No
Page 9 of 11
PCN Form -Version 1.3 December 10, 2008 Version
F. Supplementary Information
1. Environmental Documentation (DWQ Requirement)
1 a. Does the project involve an expenditure of public (federal/state/local) funds or the ? Yes ® No
use of public (federal/state) land?
1 b. If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State ? Yes ? No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c. If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
letter.) ? Yes ? No
Comments:
2. Violations (DWQ Requirement)
2a. Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards, ? Yes ® No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b. Is this an after-the-fact permit application? ? Yes ® No
2c. If you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3. Cumulative Impacts (DWQ Requirement)
3a. Will this project (based on past and reasonably anticipated future impacts) result in ? Yes ® No
additional development, which could impact nearby downstream water quality?
3b. If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
This project will not result in additional development as it addresses maintenance.
4. Sewage Disposal (DWQ Requirement) (N /A)
4a. Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of wastewater generated from
the proposed project, or available capacity of the subject facility.
Wastewater generated from this project will be routed to the existing permitted POTW
Page 10 of 11
PCN Form - Version 1.3 December 10, 2008 Version
5. Endangered Species and Designated Critical Habitat (Corps Requirement) (14 /,&,)
5a. Will this project occur in or near an area with federally protected species or ? Yes ? No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act ? Yes ? No
impacts?
r-1 Raleigh
5c. If yes, indicate the USFWS Field Office you have contacted. ? Asheville
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat? ? Yes ? No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement) (IN 1A)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation ? Yes ? No
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement) 64 4A)
8a. Will this project occur in a FEMA-designated 100-year floodplain? ? Yes ? No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
r kk itln 6125112011
Applicant/Agent's Printed Name Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant
is provided.)
Page 11 of 11
PCN Form - Version 1.3 December 10, 2008 Version

' Talecris Biotherapeutics, Inc.
Clayton, NC
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tLNOR. 9 2011 June 28, 2011
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Page 1 of 1
' Dan
See message below, I'1 be glad to assist with the PCN or anything else if needed.
See you Friday.
' -Forwarded message ----------
From: Kulz, Eric <[e-mail]>
Date: Mon, Nov 15, 2010 at 2:22 PM
' Subject: RE: Questions from Talecris
To: wyatt brown <[e-mail]>
Cc: "Richmond, Martin" <martin.richmondnncdenr. ov>, "Chapman, Amy" <amy.chapmanOncdenr.Qov>
1 Wyatt:
' I discussed the situation with Amy. We believe the proposed removal of the pipe and replacement with an open channel can
be approved as an Allowable use under Protection of Existing Structures. We acknowledge that the open channel will need to
be sized larger than the cross-section of the pipe to adequately handle stormwater flow from the upstream pipe.
Please submit a PCN for a riparian buffer authorization. With the PCN, please provide proposed design information on the
channel, including channel cross-section, construction materials, maximum flow through the channel (cubic feet per second)
and a demonstration that the proposed design will be able to handle the flows and not get blown out. Also, please provide a
figure showing the re-routed road, and the amount of buffer being impacted by construction of the channel, as well as the
buffer being reclaimed through removal of the road.
We encourage Talecris to investigate alternative ditch linings to rip-rap, such as geotextile grids that allow vegetation growth
and some infiltration (if such products are compatible with/rated for the calculated maximum flow).
Talecris should ensure that all base materials in the road bed are removed, such that the former road footprint is converted to
pervious surface. Some ripping should be done to reduce the compaction beneath the former road bed. The reclaimed buffer
area should be seeded, and efforts should be made to maintain a dense turf cover in the reclaimed areas to prevent erosion or
rills.
Please feel free to give Amy or me a call if you have any questions.
Eric
From. wyatt brown Imatlto:brownenvernQ.amail.comj
Sent: Monday, November 15, 2010 1:07 PM
' To: Richmond, Martin
Cc: Kulz, Eric
Subject: Questions from Talecris
' Martin and Eric
Thanks for meeting with us last Wednesday and offering to find the answer to the question about replacing the
failed culvert in the buffer with a open channel and removing the gravel drive. I know you guys have a lot on your
' plate but I need your answer by Wednesday if at all possible. They have a big meeting on Thursday and they are
looking to the to give them your verdict.
' thanks
Wyatt
' 919-524-5956
file://CADocuments and Settings\SimmonAD\Local Settings\Temp\XPgrpwise\4CE3C272Ra... 11/19/2010
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ADAPTED FROM: CLAYTON & POWHATAN QUADRANGLE, NC U.S.G.S. 7.5 MIN. QUAD
TALECRIS BIOTHERAPEUTICS
8368 HIGHWAY 70 WEST
° CLAYTON, NORTH CAROLINA
NORTH
CAROLINA SITE LOCATION MAP
QUADRANGLE LOCATION
1
2 0 1 MILE
1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
1 5 0 1 KILOMETER
FILE NO. 47528.001 SCALE: 1:24000
s
MAY 201 1 ENGINEER?om
S INC.
NOT TO SCALE
TALECRIS BIOTHERAPEUTICS, INC.
SOUTHEAST POND IMPACTS
CLAYTON, NORTH CAROLINA
JOHNSTON COUNTY SOIL SURVEY MAP
12335.47528 e C lr--NSOEAE
05/03/11
2011 O O'Brien & Gere Engineers, Inc.
I Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2010 by Autodesk, Inc. v9.25
68 Tuesday, May 24, 2011
Hyd. No.
' Combined flow to ex. pond
Hydrograph type = Combine Peak discharge = 77.72 cfs
Storm frequency = 2 yrs Time to peak = 16 min
Time interval = 1 min Hyd. volume = 88,141 cuft
Inflow hyds. = 22, 66, 67 Contrib. drain. area = 1.796 ac

1

t
Combined flow to ex. pond
Q
(cfs) Hyd. No. 68 -- 2 Year Q (cfs)
80
00
. 80.00
A
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0 10
Hyd No. 68
20
Hyd No. 22
30 40
Hyd No. 66
50
Hyd No. 67
?- 0.00
60
Time (min)
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2010 by Autodesk, Inc. v9.25 Tuesday, May 24, 2011
Hyd. No. 68
' Combined flow to ex. pond
Hydrograph type = Combine Peak discharge = 106.36 cfs
Storm frequency = 10 yrs Time to peak = 16 min
Time interval = 1 min Hyd. volume = 107,434 cult
Inflow hyds. = 22, 66, 67 Contrib. drain. area = 1.796 ac

Q (cfs)
120.00
100.00
80.00
60.00
40.00
20.00 20.00
' 0.00 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
' Time (min)
Hyd No. 68 Hyd No. 22 Hyd No. 66 ,_r_._ Hyd No. 67 Ti
I Hydrograph Report
Hydraflow Hydrographs Extension for AutoCADO Civil 3DO 2010 by Autodesk, Inc. v9.25
Hyd. No. 6s
' Combined flow to ex. pond
Hydrograph type = Combine
Storm frequency = 25 yrs
' Time interval = 1 min
Inflow hyds. = 22, 66, 67
1
Peak discharge
Time to peak
Hyd. volume
Contrib. drain. area
Combined flow to ex. pond
Q (cfs) Hyd. No. 68 -- 25 Year
N Aft r)n
Q (cfs)
140.00
i
120.00
100.00
I
80.00
60.00
40.00
20.00
' 0.00 0.00
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44
Hyd No. 68 Hyd No. 22 Hyd No. 66 Hyd No. 67 Time (min)
Tuesday, May 24, 2011
= 125.44 cfs
= 16 min
= 121,180 cuft
= 1.796 ac
crass-lined Channel Design for Trapezoidal and V-shape Ditches OBG Proj. No: 12335.47528
Project: Southeast Pond Improvements Date: June 8, 2011
Client: Talecris Biotherapeutics By: DCS
'erm. Turfstone Lining, New Channel
125.44: Q25 (expected Q for 25 year storm for ditch, in cfs) = ®BRIEN 6 GERE
5.00: b (bottom width of ditch in ft) - ENGINEEF1 S, INC.
2.52: d (predicted depth of channel flow in ft)
3.00: z (slope of ditch sides, z:1)
0.005: s (slope of channel in ft/ft)
4.50: VP (permissible velocity based on selected grass channel lining, see Table 8.05a)
Compute VR
31.65: A (cross-sectional area sq. ft.)
1.51: R (hydraulic radius)
6.80: V'R
0.035: n (estimated Roughness Coefficient for Turfstone)
Compute V & Q I
3.96: Actual Velocity in Channel (fps) Velocity is acceptable
125.50: Actual Capacity of Channel (cfs) Channel capacity is acceptable