20090489 Ver 1_401 Application_20090409

HERRON
A S S O C I A T E S
April 28, 2009
NCDENR
Division of Water Quality
Attn: Ian McMillan
2321 Crabtree Blvd.
Suite 250
Raleigh, N.C. 27604
919-733-4574
PAID

A? ? ZuG
DENR•NfAj??? RBitP!'?`?
?U,tiDS AND S
i.e. Scott Campbell Pond Remediation
NCDENR NOV# 2009-OP-0025
Haywood County, N.C.
Dcar Mr. McMillan,
Please find the enclosed documents for your review:
1. 5 COPIES OF THE "ENGINEER'S REPORT" INCLUDING NARRATIVE,
CURRENT PICTURES AND DESIGN CALCULATIONS.
2. 5 SETS OF PLANS.
3. 1 ORIGINAL and 4 COPIES OF A COMPLETED "PRE-CONSTRUCTION
NOTIFICATION (PCN) FORM".
If you have any questions or need further information, please contact me at 828-456-5761, Ext. 207.
TH -YOU,
GREGORY BALK, PE
C.C. Scott Campbell
r is
C()\ H. I lU R uAA;II.DOC
Engine a ring - S u r v e y i n g - P l a n n i n g
Herron Associates, P.A. - 1183 Russ Auenue - Waynesville, NC 28786
Phone: [phone] - FAX: [phone]
Serving Western North Carolina Since 1999
W,.A?gO
of ?'
I I > ??
Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre-Construction Notification PCN Form
A. Applicant Information
1. Processing . 0 9 " 0 4
1 a . Type(s) of approval sought from the
Corps:
®Section 404 Permit El Section 10 Permit
1 b . Specify Nationwide Permit (NWP) number: 3 or General Permit (GP) number: 3687
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):
N 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 on

? Yes ly for Corps Permit:

N 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: Scott Campbell's Pond Remediation
2b. County: Haywood
2c. Nearest municipality / town: Waynesville
2d. Subdivision name: n/a
2e. NCDOT only, T.I.P. or state
project no:
3. Owner Information
3a. Name(s) on Recorded Deed: Jeffery Campbell
3b. Deed Book and Page No. 682/1287
3c. Responsible Party (for LLC if
applicable):
n/a
3d. Street address: 3654 Sandlewood Drive
3e. City, state, zip: Brunswick, Ohio 44212
3f. Telephone no.: 772-834-5016 or 828-627-3086 ?T'
1-
M)
3g. Fax no.: n/a 1
3h. Email address: n/a
DENR - WATER QUALITY
WETLANDS AND STORMWATER BRAN01
Page I of 10
PCN Form - Version 1.3 December 10, 2008 Version
4. Applicant Information (if different from owner)
4a. Applicant is: ? Agent ® Other, specify: Brother of owner
4b. Name: Scott Campbell
4c. Business name
(if applicable): Scott Campbell Construction
4d. Street address: 145 Winners Circle
4e. City, state, zip: Clyde, NC. 28721
4f. Telephone no.: 828-627-8055
4g. Fax no.: 828-627-8059
4h. Email address: [e-mail]
5. Agent/Consultant Information (if applicable)
5a. Name: Gregory Balk
5b. Business name
(if applicable): Herron Associates
5c. Street address: 95 Elysinia Ave.
5d. City, state, zip: Waynesville, NC 28786
5e. Telephone no.: 828-456-5761
5f. Fax no.: 828-456-1887
5g. Email address: [e-mail]
Page 2 of 10
PCN Form -Version 1.3 December 10, 2008 Version
B. Project Information and Prior Project History
1. Property Identification
1 a. Property identification no. (tax PIN or parcel ID): 8639-64-3917

1 b. Site coordinates (in decimal degrees): Latitude: 35.600264 Longitude: -
82.912745
(DD.DDDDDD) (-DD.DDDDDD)
1 c. Property size: 16.1 acres
2. Surface Waters
2a. Name of nearest body of water (stream, river, etc.) to
proposed project: Crabtree Creek
2b. Water Quality Classification of nearest receiving water: c
2c. River basin: French Broad
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:
AGRICULTUE/SINGLE RESIDENCE WITHIN MOUNTAIN COVEWITH BOTH STEEP WOODED AND FLAT PASTURE
3b. List the total estimated acreage of all existing wetlands on the property:
0
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
3000
3d. Explain the purpose of the proposed project:
REPAIR DAMAGED PONDS-ALSO SEE NARRATIVE WITHIN THE ENGINEER'S REPORT
3e. Describe the overall project in detail, including the type of equipment to be used:
INSTALL NEW RISER/BARREL DISCHARGE STRUCTURES/ REPAIR DAMS & INSTALL BIGGER CULVERTS
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?
Comments:

? Yes ? No ®Unknown
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
? Preliminary ? Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known): Agency/Consultant Company:
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past? ® Yes ? No ? Unknown
5b. If yes, explain in detail according to "help file" instructions.
HAYWOOD COUNTY EROS40N A4 D-&EDIMENTATtON-ONTROL PERMIT
6. Future Project Plans
6a. Is this a phased project? ? Yes ® No
6b. If yes, explain.
Page 3 of 10
PCN Form -Version 1.3 December 10, 2008 Version
U. 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 0
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 -
Permanent (P) or (PER) or
i (Corps - 404, 10 stream length

Temporary (T) ntermittent
(INT)? DWQ - non-404, width (linear
f
t
other) (feet) ee
)
S1 ® P ? T DUAL CULVERTS UNKNOWN ® PER orps 2 40
TRIBUTARY ? INT WQ
S2 ®P ? T DUAL CULVERTS UNKNOWN ® PER L
orps 2 45

TRIBUTARY
? INT WQ
S3 ® P ? T DUAL CULVERTS UNKNOWN ® PER ® Corps 2 40
TRIBUTARY ? 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 125
3i. Comments: ALSO SEE PLANS AND NARRATIVE WITHIN THE ENGINEER'S REPORT
Page 4 of 10
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. 4b. 4c. 4d. 4e.
Open water Name of waterbody
impact number - (if applicable) Type of impact Waterbody type Area of impact (acres)
Permanent (P)
or Temporary
T
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts 0
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then com lete the chart below.
5a. 5b. 5c. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
Pond ID
b Proposed use or purpose of (acres)
num
er pond
Flooded Filled Excavated Flooded Filled Excavated Flooded
P1 AGRICULTURE/AESTHETICS 175 .117
P2 AGRICULTURE/AESTHETICS 60 .043
5L Total 0.16
5g. Comments: ALSO SEE PLANS AND NARRATIVE WITHIN TH E ENGINEER'S REPORT
5h. Is a dam high hazard permit required?
? Yes ®No If yes, permit ID no:
5i. Expected pond surface area (acres): 0.16
5j. Size of pond watershed (acres): 68.6
5k. Method of construction: SMALL TRACKHOE AND SKIDSTEER
Page 5 of 10
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: NIA
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
Buffer impact
number- Reason Buffer Zone 1 impact Zone 2 impact
Permanent (P) for Stream name mitigation (square feet) (square feet)
or Temporary impact required?
T
B1 ?P?T ?Yes
? No
B2 ?P?T ?Yes
? No
B3 ?P?T ?Yes
? No
6h. Total buffer impacts
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.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
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 6 of 10
PCN Form -Version 1.3 December 10, 2008 Version
3c. Comments:
4. Complete if Making a Payment to In-lieu Fee Program
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:
5. Complete if Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
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.

Zo
ne 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:
Page 7 of 10
PCN Form - Version 1.3 December 10, 2008 Version
E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1 a . Does the project include or is it adjacent to protected riparian buffers identified ? Yes ® No
within one of the NC Riparian Buffer Protection Rules?
1 b . If yes, then is a diffuse flow plan included? If no, explain why.

Comments: Yes
? ? No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project? 1 %
2b. Does this project require a Stormwater Management Plan? ? Yes ® No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why: LOW DENSITY PROJECT
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, na rrative 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?
? 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
? Coastal counties

4a.
Which of the following state-implemented stormwater management programs apply ? HQW
? 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
5a. -Does the Stormwater ManagementP?an-Taeet the aW-opriate-requirements? -
5b. Have all of the 401 Unit submittal requirements been met? ? Yes ? No
Page 8 of 10
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
? Yes ? No
letter.)
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): A NOTICE OF
VIOLATION WAS ISSUED ON 3-17-09 FOR AN INCREASE IN DISTURBED AREA BEYOND WHAT WAS PERMITTED BY
HAYWOOD COUNTY. DWQ NOV #2009-OP-0025
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.
4. Sewage Disposal (DWQ Requirement)
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.
N/A
Page 9 of 10
PCN Form -Version 1.3 December 10, 2008 Version

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
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?
El 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?
NCDENR STREAM CLASSIFICATION
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
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)
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? FEMA MAP
Scott Campbell 4-27-09
Applicant/Agent's Printed Name Applic It/Agent's Signature Date
(Agent's signature is valid on if an authorization letter from the applicant
provided.)
Page 10 of 10
PCN Form - Version 1.3 December 10, 2008 Version

SCOTT CAMPBELL'S POND REMEDIATION
ENGINEER'S REPORT AND CALCULATIONS
NCDENR-NOV# 2009-OP-0025
PREPARED BY HERRON ASSOCIATES
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TABLE OF CONTENTS
PAGE 1: NARRATIVE
PAGE 2: LAT/LONG MAP
PAGE 3: NOAA POINT PRECIPITATION CHART
PAGE 4: NCDENR STREAM CLASSIFICATION
PAGE 5: NCDENR STREAM CLASSIFICATION DESCRIPTIONS
PAGE 6: CURRENT PICTURES
PAGE 7: CURRENT PICTURES
PAGE 8: PROPOSED CULVERT CALCULATIONS
PAGE 10: PROPOSED CULVERT CALCULATIONS
PAGE 11: TABLE 8.05g- PERMISSABLE UNIT SHEAR STRENGTH
APPENDICES: PDF COPIES OF SITE PLANS
SCOTT CAMPBELL'S POND REMEDIATION
NARRATIVE
The property is located in a rural area of central Haywood County in North Carolina, with the
adjoining properties consisting of primarily agriculture and single-family homes. The terrain, in the
immediate location, consists of rolling pastures with the upstream terrain being undeveloped, steep-
wooded, and mountainous. According to the present owner of the property and neighbors, in the early
1980's a rainfall event overtopped and destroyed the earthen dams and standpipes for two very small class
"A" in-line ponds within an unnamed tributary to Crabtree Creek. Crabtree Creek is a class "C" stream and
is located approximately 1000 feet downstream from the proposed repair site. These ponds were used to
water livestock, and an old dirt road was used to access this pasture area for farm implements in order to
maintain the pasture and to feed the livestock. Since that time, no effort was made to repair these dams until
now.
The purpose of this construction is to re-build these two dams including two (2) new riser/barrel
discharge structures along with secondary discharge pipes (Dual-18" HDPE Pipes). The dual-18" HDPE
pipes are designed (50 yr-100yr) to pass any larger storm events beyond the normal pool elevations (Impact
Areas #2 & #3). The old dirt road will be covered with rock and will cross the upper dam and back
upstream across the tributary in order to access a new home further up the slope. The existing 6" PVC
culvert will be replaced by two (2) -18" HDPE pipes (Impact Area # 1).
The scope of work consists of removing all debris from within the existing flow-line of the
tributary, then using a small track-hoe and skid-steer, re-grade the side-slopes to 2.1 or flatter in order to
reduce erosion and establish and maintain vegetation. Each dam will first have a 2'X 2' key-way excavated
along the cross-sectional centerline and then be re-built using 9" loose lifts compacted to 6" at 95%
Procter. During the placement of these lifts, the 12" CMP barrels for each dam must be installed along with
the two 18" HDPE emergency pipes. The areas surrounding these pipes must be hand-tamped to reduce
leakage and to not damage the pipes. The two 24" CMP risers can then be attached to the two 12" CMP
barrels along with installing "Low-Flow Gate Valves". Finally, either seed or riparian plants, should be
planted as soon as possible along with 18" riprap at the outlets of all pipes.
The upper pond (Impact Area #2) will have a normal pool elevation of 2604.0 MSL, comprising
of a surface area of approximately 5075 sq. ft. and resulting in a subsequent volume of approximately
14,200 cu.ft Or approx. 106,000 gallons). The lower pond (hnpact Area 43) will have a normal pool
elevation of 2599.0 MSL, comprising of a surface area of approximately 1850 sq. ft. and resulting in a
subsequent volume of approximately 5,200 cu-ft (or approx. 39,000 gallons). Both ponds will only be five
feet (5 ft.) deep at normal pool.
Both ponds will then be used once again for watering livestock, mainly horses, and to create an
aesthetically pleasing entrance for the new house. For the last twenty-five years, the unstable surface within
the old ponds has created a silty runoff within the tributary. This project will eliminate this erosion and
sedimentation and create a healthier and cleaner tributary to Crabtree Creek.
Via topographic survey and pictures, I, Gregory Balk, NCPE #032146, personally investigated
and surveyed the damaged area, and with no other evidence, either photos or topographic surveys, I am
able to only provide information that the previous ponds did exist other then my testimony and this
submittal.
Lat/Long Finder
Lat: 35.60026427125842 Lon: -82.91274547576904 Combo: 35.60026, -82.91274
Set Pin Here How to use this
waynesville,nc Find Address
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Page 1 of 1
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4/3/2009

(i)
POINT PRECIPITATION
F
REQUENCY ESTIMATES
FROM NOAA ATLAS 14
I age 1 U1 .3
WAYNESVILLE EXP STN, NORTH CAROLINA (31-9147) 35.4811 N 82.9681 W 2680 feet
from "Precipitation-Frequency Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland, 2004
Extracted: Wed Dec 19 2007
Confidence Limits Seasonality Location Maps Other Info_ jf GIS data Maps 11 Help Docs 11 U.S. Map
Precipitation Intensity Estimates (in/hr)
ARI*
(years) 5
mn 10
min IS 30
11
min min 60
1 [
1 120
min 3
hr 6
hr 12
hr 2 48
hr 4
da 7
da 10
da 20
da 30
d 45
d 60

F41-9T
3 .34
2.78 1.91
1.19
0.69
0.49
0.31
0.19
0.11
0
07 y
04
0 y
0
03 y
0
02 y
0
01 ay
0
01 ay
0
01 day
0
01
?2 4.96 3.97 3.32 2.29 1.44 0.83 0.59 0.36 0.23 0.14 .
0
08 .
0
05 .
0
03 .
03
0 .
0
02 .
0
01 .
0
01 .
0
01
= EE 4.77 4.02 2.86 1.83 1.01 0.74 0.45 0.28 0.17 .
0
10 .
0
06 .
0
04 .
03
0 .
0
02 .
0
02 .
0
01 .
0
01
10 6.73 5.39 4.54 3.29 2.14 1.23 0.86 0.52 0.32 0.19 .
0.11 .
0
06 .
0
04 .
0
03 .
0
02 .
0
02 .
0
01 .
0
01
25

0
R0--1
200 7.74
8.50
9.25
10.01 6.16
676
736
7.94 5.21 3.86
5.71 4.30
4.75
6.68 5.20 2.57

3.27
3.64 1.48
1.68
1.89
2.11 1.04
1.19
1.35
1.52 0.62
0.71
0.81
0.91 0.38
0.42
0.47
0.52 0.23
0.25
0.28
0.31 0.13
0.15
0.16
0.18 .
0.07
0.08
0.09
0.09 .
0.05
0.05
006
0.06 .
0.04
0.04
005
0.05 .
0.02
0.03
0.03
0.03 .
0.02
0.02
002
0
02 .
0.02
0.02
0.02
0
02 .
0.01
0.01
002
0
02
500
1000 10.99
11.77 8.69
9.26 7.29
7.76 5.80
6.28 4.16
4.58 2.42
2.66 1.76
1.95 1.06 1
1.17 10.58
0.63 0.35
0.38 0.20
0.22 0.10
0.11 0.07
0.08 0.06
0.06 0.03
0.04 .
0.02
0.03 .
0.02
0.02 .
0.02
0.02
Text version of table j - These precipitation frequency estimates are based on a partial duration sees. ARI is the Average Recurrence Interval.
Please refer to the documentation for more information. NOTE: Formatting forces estimates near zero to appear as zero.
* Upper bound of the 90% confidence interval
Precipitation Intensity Estimates (in/hr)
ARI*) 10 15 30 60 120
(years mm mm mm mm min mm
hr
hr 12
hr III Mhr ffh 4
d 7
d 10 20
d 30 4 60

4.64 3.71 3.09 2.12 1.32 0.76
0.54
0.34
0.21
0.12 r
0.07 y
a
0.04 y
a
0.03 ay day
0.02 0.02 day
0.01 day day
0.01 0.01
5.51 4.40 3.69 2.55 1.60 0.92
16.61 5.29 4.46 3.17 2.03 1.16 0.65
0.82 0.40
0.49 0.25
0.30 0.15
0.18 0.09
0.10 0.05
0.06 0.03
0.04 0.03 0.02
0.03 0.02 0.01
0.02 0.01 0.01
0.01 0.01
10 7.48 5.98 5.04 3.65 2.38 1.36 0.95 0.57 0.35 0.20 0.12 0.07 0.04 0.04 0.02 0.02 0.02 0.01
25 8.57 6.83 5.77 4.27 2.85 1.63 1.15 0.68 0.41 0.24 0.14 0.08 0.05 0.04 0.03 0.02 0.02 0.01
50 9.42 7.50 6.33 4.77 3.23 1.86 1.32 0.78 0.46 0.27 0.16 0.08 0.06 0.04 0.03 0.02 0.02 0.02
100 10.30 8.18 6.89 5.28 3.63 2.09 1.49 0.89 0.51 0.30 0.17 0.09 0.06 0.05 0.03 0.02 0.02 0.02
200 11.17 8.85 7.44 5.80 4.06 2.34 1.68 1.00 0.56 0.33 0.19
1
0.
10 0.07
11 1

0.05 0.03
1 1

0.02

0.02 0.02
500 12.32 9.75 8.18 6.51 4.67 2.70 1.96 1.17 0.64 0.37 0.21 0.11 0.08 0.06 0.04 0.03 0.02 0.02
1000 13.27 10.45 8.75 7.08 5.17 2.99
' The unner hnund of fhe -M..rn 2.19 1.31 0.69 0.40 0.23 0.12 0.08 0.06 0.04 0.03 0.02 0.02
• These precipitation frequency estimates are based on a partilal dgrapon series, ARI is the Average Recunence Interval.
Please refer to the documentation for more information. NOTE: Formatting prevents estimates near zero to appear as zero.
L * Lower bou nd of the 90% confidence interval
Precipita tion Intensity Estimates (in/hr)
ARI** 5 10 1.5 30 60 120

min 11 min min
min min min 10
3 Fh]r h M24 Mhr Rda Rd
hr hr
d 20 30

d
d 45 60

=3.78 3.02 2.52 1.72 1.07 0.63 ,
ay 1
0.45 0.28 0.18 0.11 0.06 0.04 0.03 0.02 ay
1
ay
0.01 O.OI day day
0.01 0.01
4.49 3.59 3.01 2.08 1.30 0.76 0.53 0.33 0.21 0.13 0.08 0.04 0.03 0.02 0.02 0.01 0.01 0.01
1 - 15.38 4.30 3.63 2.58 1.65 0.95 0.67 0.41 0.26 0.16 0.09 0.05 0.04 0.03 0.02 0.02 0.01 0.01
10 6.07 4.85 4.09 2.96 1.93 1.11 0.78 0.47 0.29 0.18 0.11 0.06 0.04 0.03 0.02 0.02 0.01 0.01
25 6.92 5.51 4.66 3.45 2.30 1.33 0.94 0.56 0.34 0.21 0.12 0.07 0.05 0.04 0.02 0.02 0.02 0.01
=F7 .56 6.02 5.08 3.82 2.59 1.50 1.06 0.64 0.38 0.24 0.14 0.08 0.05 0.04 0.03 0.02 0.02 0.01
100 8.18 6.50 5.48 4.20 2.89 1.67 1.19 0.72 0.42 0.26 0.15 0.08 0.06 0.04 0.03 0.02 0.02 0.01
200 8.78 6.97 5.86 4.56 3.20 1.85 1.33 0.80 0.46 0.29 0.17 0.09 0.06 0.05 0.03 0.02 0.02 0.02
http://hdsc.nws.noaa.c,ov/cgi-binlhdsclbuildout.perl?type=idf&units=us&series=pd&state... 12/19/2007
Name of Stream Description Curr. Class Date Basin Stream Index #
Little Beartrap From source to Middle WS-III;Tr,HQW 08/03/92 French 5-2-7-6
Branch Prong West For k Pigeon Broad
River
Right Hand Prong From source to Middle WS-III;Tr,HQW 08/03/92 French 5-2-7-7
Prong West For k Pigeon Broad
River
Boomer Inn Branch From source to Right WS-III;Tr,HQW 08/03/92 French 5-2-7-7-1
Hand Prong Broad
Queen Creek From source to West WS-III;Tr 08/03/92 French 5-2-8
Fork Pigeon Ri ver Broad
Laurel Branch From source to West WS-III;Tr 08/03/92 French 5-2-9
Fork Pigeon Ri ver Broad
Big Branch From source to Pigeon C 09/01/74 French 5-20
(Eastside) River Broad
Dawn Branch (Big From source to Pigeon C 09/01/74 French 5-21
Branch, Westside) River Broad
w
?s,h.
- ti

Liner Creek From source to Jordan C 09/01/74 French 5-22-1-(1)
Branch (Fal l C r.) Broad
Liner Creek From Jordan Cr eek to C;Tr 07/01/73 French 5-22-1-(2)
Crabtree Creek Broad
Jordan Branch From source to Liner C 09/01/74 French 5-22-1-3
(Fall Cr.) Creek Broad
Jo Ab Branch From source to Jordan C 09/01/74 French 5-22-1-3-1
Branch Broad
Wade Branch From source to Jo Ab C 09/01/74 French 5-22-1-3-1-1
Branch Broad
Wolf Branch From source to Liner C;Tr 07/01/73 French 5-22-1-4
Creek Broad
Rock Hollow From source to Liner C 09/01/74 French 5-22-1-5
Branch Creek Broad
Rogers Cove Creek From source to Liner C 09/01/74 French 5-22-1-6
Creek Broad
Bald Creek From source to C 07/01/73 French 5-22-2
Crabtree Creek Broad
Buckeye Branch From source to Bald C 09/01/74 French 5-22-2-1
Creek Broad
Indian Branch From source to Bald C 09/01/74 French 5-22-2-2
Creek Broad
Little Creek From source to Bald C 09/01/74 French 5-22-2-3
Creek Broad
Long Levels From source to Bald C 09/01/74 French 5-22-2-4
Branch Creek Broad
Harbon Cove From source to Bald C 09/01/74 French 5-22-2-5
Branch Creek Broad
Rush Fork From source to C 09/01/74 French 5-22-3
Crabtree Creek Broad
Silvers Cove From source to Rush C 09/01/74 French 5-22-3-1
Creek Fork Broad
Page 5 of 15 2009-03-28 04:27:15
NC DENR - DIVISON OF WATER QUALITY
STREAM CLASSIFICATION DESCRIPTIONS
2B .0300
Class Description
B Primary Recreation, Fresh Water
-- III
rt,' !
.f?L es
CA Critical Area
FWS Future Water Supply Waters
HQW High Quality Waters
N/A Not Applicable/Out of State
NSW Nutrient Sensitive Waters
ORW Outstanding Resource Waters
SA Market Shellfishing, Salt Water
SB Primary Recreation, Salt Water
SC Aquatic Life, Secondary Recreation, Salt
Sw Swamp Waters
Tr Trout Waters
WS-I Water Supply I -- Natural
WS-II Water Supply II -- Undeveloped
WS-III Water Supply III -- Moderately Developed
WS-IV Water Supply IV -- Highly Developed
WS-V Water Supply V -- Upstream
DOWNSTREAM TOWARDS CRABTREE
LOOKING UPSTREAM INTO WATERSHED
DAMAGED OUTFALL STRUCTURE FROM PREVIOUS PONDS
DAMAGED OUTFALL STRUCTURE FROM PREVIOUS PONDS
50 YR STORM RESULTS
Worksheet for Circular Channel
Project Description
Project File g:\campbell\pond\pipes.fm2
Worksheet REPAIR1
Flow Element Circular Channel
Method Manning's Formula
Solve For Full Flow Diameter
Input Data
ManningS Coefficient 0.010
Channel Slope 0.075000 ft/ft
Discharge 116.60 cfs
t$D = C ?-
0" S µ4?
(0 g, (v 0- C
(o,%4)
Results
Depth 27.6 in pr
Diameter 27.57 in
Flow Area 4.15 ftz
Wetted Perimeter 7.22 It
' s
To Width 0 00 ft
p
Critical Depth 2.29 ft
Percent Full 100.00
Critical Slope 0.0726 89 ft/ft
Velocity 28.12 ft/s
Velocity Head 12.29 ft
Specific Energy FULL It
Froude Number FULL
Maximum Discharge 125.43 cfs
Full Flow Capacity 116.60 cfs
Full Flow Slope 0.075000 ft/ft
why mil- X>1 A/PY/q

z
/C - ?©
04/27/09 FlowMaster v5.13
04:11:33 PM Haestad Methods, Inc 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
100-yr
Worksheet for Circular Channel
Project Description
Project File g:lcampbell\pond\pipes.fm2
Worksheet 100-yr
Flow Element Circular Channel
Method Manning's Formula
Solve For Full Flow Diameter
Input Data
Mannings Coefficient 0.010
Channel Slope 0.075000 ft/ft
Discharge 126.90 cfs
Results
Depth 28.5 in
Diameter 28.46 in
Flow Area 4.42 ft2
Wetted Perimeter 7.45 ft
Top Width 0.00 ft
Critical Depth 2.37 ft
Percent Full 100.00
Critical Slope 0.072713 ft/ft
Velocity 28.72 ft/s
Velocity Head 12.82 ft
Speck Energy FULL ft
Froude Number FULL
Maximum Discharge 136.51 cfs
Full Flow Capacity 125.90 cfs
Full Flow Slope 0.075000 ft/ft
04/27/09 FlowMaster v5.13
10:22:48 PM Haestad Methods, Inc_ 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
Appendices
Table 8.05g
Permissible Shear Stresses
for Riprap and Temporary
Liners
Permissible Unit Shear Stress, Td
Lining Category Lining Type (lb/ftz)
Temporary Woven Paper Net 0.15
Jute Net 0.45
Fiberglass Roving:
Single 0.60
Double 0.85
Straw with Net 1.45
Curled Wood mat 1.55
Synthetic Mat 2.00
d50 Stone Size (inches)
Gravel Riprap 1 0.33
2 0.67
Rock Riprap 6 2.00
9 3.00
12 4.00
15 5.00
18 6.00
21 7.80
24 8.00
Aaaptea Prom: f HWA, HEG15, April 1983, pgs. 17 & 37.
Design Procedure- The following is a step-by-step procedure for designing a temporary liner for
Temporary Liners a channel. Because temporary liners have a short period of service, the design
Q may be reduced. For liners that are needed for six months or less, the 2-year
frequency storm is recommended.
Step 1. Select a liner material suitable for site conditions and application.
Determine roughness coefficient from manufacturer's specifications or Table
8.05e, page 8.05.10.
Step 2. Calculate the normal flow depth using Manning's equation (Figure
8.05d). Check to see that depth is consistent with that assumed for selection of
Manning's n in Figure 8.05d, page 8.05.11. For smaller runoffs Figure 8.05d
is not as clearly defined. Recommended solutions can be determined by using
the Manning equation.
Step 3. Calculate shear stress at normal depth.
Step 4. Compare computed shear stress with the permissible shear stress for
the liner.
Step 5. If computed shear is greater than permissible shear, adjust channel
dimensions to reduce shear, or select a more resistant lining and repeat steps
1 through 4.
Design of a channel with temporary lining is illustrated in Sample Problem
8.05b, page 8.05.14.
Rev. 12/93 8.05.13
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