20070776 Ver 1_Stormwater Info_20080213

I1~ WAnETiuM
February 11, 2008
401 Oversite/Express Review Permitting Unit
NCDENR -Division of Water Quality
Parkview Building
2321 Crabtree Boulevard, Suite 250
Raleigh, North Carolina 27604
Attention: Ms. Annette Lucas
Re: Waynesville Commons, Haywood County
Dear Ms. Lucas:
~?-~~ ~a-
Q~~~oe~~
FEB 1 3 2008
DENR -WATER QUALITY
iMETLANDS AND $TORMWATER BRANCH
Enclosed herewith, please find our submittal for the storm water review. We have included the
following in our submittal:
1. One set of plans relative to the storm water management system.
2. One set of the Supplements for:
a. Sand Filter A
b. Sand Filter B
c. Infiltration Basin A
d. Infiltration Basin B
3. One set of the Storm water calculations for each drainage area
4. Drainage Area Map
5. One copy of the preliminary grading/landscape plan for Lot 2.
I have asked Waynesville Commons Retail Associates to forward executed copies of the Inspection
and Maintenance Agreements directly to you under separate cover.
We have included one set of the above materials for your review and comment. We can forward
additional sets if required. Please let us know of additional submittal requirements ASAP for you to
begin your review.
Sincerely,
WADF~ TRIM, IN .
~~~~
es J. Chri , PE
Associate
cjc
CDW2009-01 E
wteim:projec[wise\Doc+imeMS~Land Developme~rt~Projects~CdW2009W 1 e~Docs~Storm Water~2008-State 401\Submittal Cover 2007-02-11
Enclosures
cc: Mr. David Scarnati, Cedarwood Development, Inc.
Wade Trim, Inc. 828.687.9500
1200 Ridgefield Boulevard 828.687.4090 fax
Suite 145 www.wadetrim.com
Asheville, NC 28806

Permit Number:
(to be provided by DWQ)
~F W ATF9
~~~ o~ OG
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of fhe required information.
Make sure to also fill out and submit the Required Items Checklist (Section III) and the 1&M Agreement (Section III
I. PROJECT INFORMATION
Project name Waynesville Commons
Contact name Charles J. Christy
Phone number
Date
Drainage area number
828-687-9500
February 11, 2008
4S -Sand Filter A
II. DESIGN INFORMATION
Site Characteristics
Drainage area (Ao)
Impervious area
Impervious (IA)
Design rainfall depth (Rp)
Peak Flow Calculations
Does this project require pre/post control of the 1-yr 24-hr peak flow?
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
213,085 ft OK
203,541 ft
95.5%
1.0 in
YorN
in
in/hr
ft3lsec
ft3/sec
ft3/sec
Storage Volume
Design volume (WQV)
Adjusted water quality volume (WOVAd;)
Volume contained in the sedimentation basin and on top of the sand filter
Maximum head on the sedimentation basin and sand filter (hM~F;ne~)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (Rv)
Type of Sand Filter
Open sand filter?
If this is an open sand filter: The clearance between the bottom of the sand
filter and the SHWT (dsr+wr)
Closed/pre-cast sand filter?
If this is a closed sand filter: The clearance between the bottom of the sand
filter and the SHWT (dsH,n,r)
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (ds~)
16,153 ft3
12,115 ft3 OK
27,600
aft OK
1.5 ft OK
0.91 (unitless)
N YorN
Y YorN
2ft
Oft
Form SW401-Sand Filter-Rev.2 Parts I and II. Project Design Summary, Page 1 of 3

Sedimentation Basin
Surface area of sedimentation basin (As)
Sand Filter
Surface area of sand filter (Ar)
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow-splitting device used?
Does volume in excess of the design volume flow evenly distributed through a
vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
Is the BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber/forebay (Ws~)?
What is the depth of sand over the outlet pipe?
Figure 1: Open Sand Filter
Seduueutatiou
i'Iraiuber
l or Forebm•)
Flo~~• t~'
~'~,
~~
l
Iu-Sihi Soil SeasonabhE Hislr Water TaUle
.......... j~'sBa .............
Permit Number:
(to be provided by DWQ)
ftz
OK. Meets minimum, but may need to be increased to
9,200 ftz contain the required volume if error under Storage
Volume section.
Oft
12 (ft/day)
16 hours OK. Submit drainage calculations.
0.67 days
Y Y or N OK
Y Y or N OK
N Y or N Excess volume must pass through filter.
Oft
N Y or N Show how flow is evenly distributed.
Y Y or N OK
Y Y or N OK
YorN
Y Y or N OK
_n
3.5 ft OK
S:uxi Filter
C'ba~ber
r ~
t_hrtlet Pipe
2' ft
..J Clppe ;CIF
i <~HWr
Form SW401-Sand Filter-Rev.2 Parts I and II. Project Design Summary, Page 2 of 3

Permit Number:
(to 6e provided by DWQ)
Figure 2: Closed Sand Filter
R'en
F7otti•
rh~erla»d
F7o~~•
C'onerete (or other
chuchu:~l material)
Lr-Sihi Soil/
Sea~ouabl}~ High
water Table
~t'ater /~ Sedurrentatiou ("lrsuuba
(."ollected (Hravy seCimeras,
Orgarncs. Debris)
C'ovcr t3ratcs
Sand
+~ ,
(h-tlet Pipe
...............: ~~pace
etlPipe ?CIF
y.:
............... C
i ~HWf
~J
Sand Filter ChanrUer
(Trapped So6dsj
~~~$ed
Form SW401-Sand Filter-Rev.2 Parts I and II. Project Design Summary, Page 3 of 3

Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
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.
Initials Pagel Plan
Sheet No.
FAQ 2 1. Plans (1" - 50' or larger) of the entire site with labeled drainage area boundaries
c- 3, (
3 , o -System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
~
~ 3 3 chamber

5
C - 3 - Maintenance access,
.
c ~ 3•~ -Flow splitting device,
-Recorded drainage easement and public right of way (ROW),
-Design at ultimate build-out,
- Off-site drainage (if applicable), and
-Boundaries of drainage easement.
C -3. I 2. Plan details (1" = 50' or larger) for the sand filter showing:
C - 3.3 -System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
~ -3.S chamber
c - 3 _G _ Maintenance access,
- Flow splitting device,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable), and
-Boundaries of drainage easement.
~ ~- 3•~ 3. Section view of the sand filter (1" = 20' or larger) showing:
~. ; .3 -Depth(s) of the sedimentation chamber and sand filter chamber,
C - 3. ~ -Depth of sand filter media
- Connection between the sedimentation chamber and the sand filter chamber,
- SHWT level(s)
- Outlet pipe, and
-Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable)
~;WF ~re~;ds~y 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
~ubN.:H ~ results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
sFd~u~ / investigation request form. County soil maps are not an acceptable source of soils information.
~ l~ra~tic,~e QSSt pporfing calculations (including drainage calculations)
~~ 6. Sign1ed av~nd~jn.~otarized inspection and maintenance agreement
S~le~:+~f,~ 5(~~1gf~TG1h "J Cco~N~fwood t~avc~opw~C'~'~ 1~~,
Form SW401-Sand Filter-Rev.1 Part III, Page 1 of 1

Permit Number:
(to be provided by DWQ)
OF W ATF9
O~ O~
~~~ > ti
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be tilled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section Ill) and the 1&M Agreement (Section III
I. PRQJECT INFORMATION
Project name Waynesville Commons
Contact name Charles J. Christy
Phone number 828-687-9500
Date
Drainage area number
February 11, 2008
6S -Sand Filter B
II. DESIGN INFORMATION
Site Characteristics
Drainage area (Ap) 200,019 ft
Impervious area 190,900 ftz
Impervious (IA) 95.4%
Design rainfall depth (Ro) 1.0 in
Peak Flow Calculations
Does this project require pre/post control of the 1-yr 24-hr peak flow? N Y or N
1-yr, 24-hr runoff depth in
1-yr, 24-hr intensity in/hr
Pre-development 1-yr, 24-hr runoff ft3/sec
Post-development 1-yr, 24-hr runoff ft3/sec
Pre/Post 1-yr, 24-hr peak control ft3/sec
Storage Volume
Design volume (WQV) 15,151 ft3
Adjusted water quality volume (WQVnai) 11,363 ft3
Volume contained in the sedimentation basin and on top of the sand filter 31,500
Maximum head on the sedimentation basin and sand filter (hM~F;ne~) 3 ft
Average head on the sedimentation basin and sand filter (hA) 1.5 ft
Runoff Coefficient (Rv) 0.91 (unitless)
Type of Sand Filter
Open sand filter? N Y or N
If this is an open sand filter: The clearance between the bottom of the sand ft
filter and the SHWT (dSHWT)
Closed/pre-cast sand filter? Y Y or N
If this is a closed sand filter: The clearance between the bottom of the sand 4 ft
filter and the SHWT (dSHWT)
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter and the bottom of the roof of the underground 3 ft
structure (dsP~)
OK
OK
OK
OK
Form SW401-Sand Filter-Rev.2 Parts I and II. Project Design Summary, Page 1 of 3

1
Sedimentation Basin
Surface area of sedimentation basin (As)
Sand Filter
Surface area of sand filter (AF)
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow-splitting device used?
Does volume in excess of the design volume flow evenly distributed through a
vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
Is the BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber/forebay (Ws~)?
What is the depth of sand over the outlet pipe?
Figure 1: Open Sand Filter
Sediuteutatiou S:u~d Filter
C'I~amber l-1ia uber
(or Foreba}'1 ~
ftZ
Permit Number:
(to be provided by DWQ)
OK. Meets minimum, but may need to be increased to
10,500 ft contain the required volume if error under Storage
Volume section.
aft
12 (ff/day)
12 hours OK. Submit drainage calculations.
0.50 days
Y Y or N OK
Y YorN OK
N Y or N Excess volume must pass through filter.
Oft
N Y or N Show how flow is evenly distributed.
Y Y or N OK
Y YorN OK
YorN
Y Y or N OK
_~~
2.5 ft OK
clPipe c1F
~~HWT
Form SW401-Sand Filter-Rev.2
Parts I and II. Project Design Summary, Page 2 of 3
I~rSih~ Soil' Seasooabl~E AisL eater Table
Sed

L
Figure 2: Closed Sand Filter
LL'en
Flow-
Or~erl.~a~d
FIoH
Concrete (or oHter
xhnchunl nraterinD
Li-Siht Soil/
Seasonabl}• High
LVaker Table
Ll'ater
(:'ollected
Seciunentation C7uuubn' (Fafreb:ry-)
(H~vy sediments,
Organics. Debris)
`~-Sed
i3ratcs
Oaflet Pipe
...................: (space
.tlPrpe ' C)
E F
+ R .................... t~HWf
L"YJ
Saud Filter C"hatnbu
(Trapped SoLds}
Permit Number:
(to be provided by OWQ)
Form SW401-Sand Filter-Rev.2 Parts I and II. Project Design Summary, Page 3 of 3

Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
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.
Initials Pagel Plan
Sheet No.
~ ~~ <A~2 1. Plans (1" - 50' or larger) of the entire site with labeled drainage area boundaries
3,~ -System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
~ -3. I chamber
~ . ~, ~~ -Maintenance access,
~ _ ~ ~ -Flow splitting device,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable), and
-Boundaries of drainage easement.
~- 3.0 2. Plan details (1" = 50' or larger) for the sand filter showing:
C - ~, i -System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
C - 3, ~, ~, chamber
~ -3 , (p -Maintenance access,
-Flow splitting device,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable), and
Q ,~c
4
~-3 -Boundaries of drainage easement.
"
'
r~~ ~ 3. Section view of the sand filter (1
= 20
or larger) showing:
~ - 3.3r~ -Depth(s) of the sedimentation chamber and sand filter chamber,
- Depth of sand filter media
-Connection between the sedimentation chamber and the sand filter chamber,
- SHWT level(s)
-Outlet pipe, and
-Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable)
,~W~ Prev ~od~ 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
SJb~',*~l results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
s~vr~/ investigation request form. County soil maps are not an acceptable source of soils information.
l~a ~µagc~ZP~a'f"
~'^~ 5. upporting calculations (including drainage calculations)
~--~_ 6. Signed and notarized inspection and maintenance agreement
SJ~rh,~~ .:r~~rF$~,I,,, b~ CFlwo~c~ ~~,le(UP~Q..-1~ .AMC.
Form SW401-Sand Filter-Rev.1 Part III, Page 1 of 1

Permit No
(to be provided by DWQ)
O~O~ W AT ~9QG
~,,.,r ~ STORMWATER MANAGEMENT PERMIT APPLICATION FORM -,
NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project Name Waynesville Commons
Contact Person Charles J. Christy
Phone Number 828-687-9500
Date
Drainage Area Number
11-Feb-0B
2S & 8S -Infiltration Basin A
II. DESIGN INFORMATION
Site Characteristics
Drainage area 444,077.00 ft
Impervious area 418,746.00 f~
Percent impervious 0.94
Design rainfall depth 1.0 in
Peak Flow Calculations
Is pre/post control of the 1-yr 24-hr peak flow required?
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre-development 1-yr, 24-hr runoff volume
Post-development 1-yr, 24-hr runoff volume
PrelPost 1-yr, 24-hr peak flow control
Storage Volume: Non-SR Waters
Minimum design volume required
Design volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
N (Y or N)
In
in/hr
ft3/sec
ft3lsec
ft3lsec
31,438 ft3
32,427 ft3 OK for non-SR waters
in
ft3
ft3
ft3
ft3
Sandy loam
7.67 in/hr
2,750.00 fmsl
0.13 days OK
3 :1 OK
2752.00 fmsl OK
2754.00 fmsl
2755.00 fmsl
275 ft
75 ft
12,111 ftz
Form SW401-Infiltration Basin-Rev.1 Parts I. & II. Design Summary, Page 1 of 2

Permit No.
(to be provided by DWQ)
Additional Information
Total runoff volume captured by basin 8.93 ac-in Maximum of 2acre-inches allowed
Length of vegetative filter for overflow ft
Distance to structure ft
Distance from surface waters ft
Distance from water supply well(s) 500 ft OK
Separation from impervious soil layer 5 ft OK
Naturally occuring soil above shout 2 ft OK
Bottom covered with 4-in of clean sand? Y (Y or N) OK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) OK
Bypass provided for larger storms? Y (Y or N) OK
Pretreatment device provided Forebays
Form SW401-Infiltration Basin-Rev.1 Parts I. 8 II. Design Summary, Page 2 of 2

Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
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.
Pagel Plan
Initials Sheet No.
~v~ A1~2
C-2_a
c-3.o
c -3.3
C - 3.3u
~-3.G
C - 3.7
~-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,
- Recorded drainage easement and public right of way (ROW),
-Overflow device, and
- Boundaries of drainage easement.
~_ C- Z .D 2. Partial plan (1" = 30' or larger) and details for the infiltration basin showing:
C - 3. v -Bypass structure,
C - 3.3 -Maintenance access,
c -3.s~. -Basin bottom dimensions,
C -3 ~ G -Basin cross-section with benchmark for sediment cleanout,
C - 3• ~ -Flow distribution detail for inflow,
G " 3 ~ g -Vegetated filter, and
-Pretreatment device.
U~I'~ C -3. ~ 3. Section view of the infiltration basin (1" = 20' or larger) showing:
C ' 3 ~ 3 -Pretreatment and treatment areas, and
C - 3.3 ~
C' ~• ~ -Inlet and outlet structures.
W~ S~or~ ~~t~- 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
~~}cd
~~ P~ev~, a '0~'~~5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
S~.tG~V~G~ ~V1
''~~ Ch~N~~s~'. 6. An assurance that the installed system will meet design specifications upon initial operation once the
°~~ff c ~c "~ project is complete and the entire drainage area is stabilized.
~~ C -3, 8' 7. A construction sequence that shows how the infitlration basin will be protected from sediment until the
entire drainage area is stabilized.
~!"M ~t~- 8. The supporting calculations.
~' Sdb~,~}~[~ 52p~'t`~~ ~ Celturwoad ~~al,pN.~~; T~~ .
9. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
~~' T~d~d~l : h
vwucrst+: 10. A copy of the deed restriction.
A brGe b*c„} 5
Form SW401-Infiltration Basin-Rev.1 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1

Permit No.
(to be provided by DWQ)
O~O~ W AT F9~G
h ~
~~ ~ STORMWATER MANAGEMENT PERMIT APPLICATION FORM s
NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part lll) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project Name Waynesville Commons
Contact Person Charles J. Christy
Phone Number 828-687-9500
Date 11-Feb-0B
Drainage Area Number 5S & 7S -Infiltration Basin B
1!. DESIGI~INFORMATION
Site Characteristics
Drainage area 381,599.00 ftz
Impervious area 351,217.00 ftz
Percentimpervious 0.92
Design rainfall depth 1.0 in
Peak Flow Calculations
Is prelpost control of the 1-yr 24-hr peak flow required?
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre-development 1-yr, 24-hr runoff volume
Post-development 1-yr, 24-hr runoff volume
PrelPost 1-yr, 24-hr peak flow control
Storage Volume: Non-SR Waters
Minimum design volume required
Design volume provided
Storage Volume: SR Waters
1-yr, 24-hr rainfall depth
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom SA
N (Y or N)
m
in/hr
ft3/sec
ft3/sec
ft3lsec
29,993 ft3
30,553 ft3 OK for non-SR waters
in
ft3
ft3
ft3
ft3
Sandy Loam
1.32 inlhr
2,738.00 fmsl
1.7 days OK
3 :1 OK
2749.50 fmsl OK
2754.00 fmsl
2755.00 fmsl
226 ft
50 ft
4,455 f~
Form SW401-Infiltration Basin-Rev.1 Parts I. & II. Design Summary, Page 1 of 2

Permit No.
(to be provided by DWQ)
Additional Information
Total runoff volume captured by basin 8.42 ac-in Maximum of 2acre-inches allowed
Length of vegetative filter for overflow ft
Distance to structure ft
Distance from surface waters ft
Distance from water supply well(s) 500 ft OK
Separation from impervious soil layer ft
Naturally occuring soil above shwt ft
Bottom covered with 4-in of clean sand? Y (Y or N) OK
Recorded drainage easement provided? Y (Y or N) OK
Capures all runoff at ultimate build-out? Y (Y or N) OK
Bypass provided for larger storms? Y (Y or N) OK
Pretreatment device provided Forebays
Form SW401-Infiltration Basin-Rev.1 Parts I. & II. Design Summary, Page 2 of 2

Permit No
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
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.
Pagel Plan
Initials Sheet No.
~NIF ~I R~Z 1. Plans (1" - 50' or larger) of the entire site showing:
~- z ~ ~ - Design at ultimate build-out,
~- 3, t
C - 3.5 -Off-site drainage (if applicable),

c-3.3q -Delineated drainage basins (include Rational C coefficient per basin),
c _ 3 ~ Co -Basin dimensions,
c - 3.7 -Pretreatment system,
~ - 3 . g -High flow bypass system,
-Maintenance access,
- Recorded drainage easement and public right of way (ROW),
-Overflow device, and
- Boundaries of drainage easement.
C'~-I 2. Partial plan (1" = 30' or larger) and details for the infiltration basin showing:
C-3~i -Bypass structure,
c - 3, 3 -Maintenance access,
C - 3, 30~ -Basin bottom dimensions,
C " ~ • ~ -Basin cross-section with benchmark for sediment cleanout,
~ - ~•~
C- 3.8 -Flow distribution detail for inflow,
-Vegetated filter, and
-Pretreatment device.
~-~
- 3. Section view of the infiltration basin (1" = 20' or larger) showing:
~
<-3.3c, -Pretreatment and treatment areas, and
C - 3 • G -Inlet and outlet structures.
~_ S~or~ t'CT6rf 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
•~
~ ~cJ ~ v~s~y S°b 5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
~ N`~~ e~ ~ h investigation request form. County soil maps are not an acceptable source of soils information.
dw»ec ~~ 6. An assurance that the installed system will meet design specifications upon initial operation once the
asrtcu.e~-1 s project is complete and the entire drainage area is stabilized.
C- 3 ~~- 7. A construction sequence that shows how the infitlration basin will be protected from sediment until the
entire drainage area is stabilized.
S ~ .~pr », ~ ~ ~ 8. The supporting calculations.
~ ~~.~LI ~ g,~~c ~ctik1~ ~j C C ldO+wJeaca d ~ee)~ D~ IN ~ ~`ii~T ~.~
9. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
~tiGIU~~
;., ow~~s~+~P 10. A copy of the deed restriction.
li G~ r,Z,.e w.(+a~ 5
Form SW401-Infiltration Basin-Rev.1 Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1

~wm. um sa~,p, ik. WgTNtSYILLt IUWN (;LNILK
O
V
0

Table 1
Wa nesville Town Center - Draina a Sub-DisVict Area Summa
DESTINATION DRAINAGE DISTRICT AREA AREA Runoff Coef.
DISTRICT ID # SF (AC C
Se crate S stem Lot 2 1 S 116,657 2.68 0.76

Infikration Basin A Lot 1-1A 34,524 0.79 0.9
Infikration Basin A Lot 1-1B 13,827 0.32 0.2
Infikration Basin A H1 4,184 0.10 0.2
Infikration Basin A H2 5,161 0.12 0.9
Infikration Basin A I 8,325 0.19 0.9
Infikration Basin A L 40,042 0.92 0.9
Infiltration Basin A Al 49 838 1.14 0.9
Infikration Basin A A2 ~ 27,952 0.64 0.2
Infikration Basin A B N 25,115 0.58 0.9
Infikration Basin A C 3,710 0.09 0.9
Infiltration Basin A D 4 271 0.10 0.9
Infiltration Basin A E 5 850 0.13 0.9
Infikration Basin A F 7 973 0.18 0.9
Infikration Basin A G 9,011 0.21 0.9
Infiltration Basin A O 16,417 0.38 0.9
Infikration Basin A XX 3 610 0.08 0.2
Infiltration Basin A S ~ 176,928 4.06 0.9
Infikration Basin A T a0 7,339 0.17 0.9
TOTAL-Basin A 444,077 10.19
Imperv. 394,504
Perv. 49,573
In 0.89
Infikration Basin B II 104,141 2.39 0.9
Infikration Basin B JJ ~ 13,692 0.31 0.9
Infiltration Basin B TT 7,353 0.17 0.9
Infikration Basin B CC 38 547 0.88 0.9
Infikration Basin B GG 34,312 0.79 0.9
Infiltration Basin B HH 44 619 1.02 0.9
Infiltration Basin B KK 21 912 0.50 0.9
Infiltration Basin B LL 43,000 0.99 0.9
Infikration Basin B MM ~ 2,838 0.07 0.9
Infikration Basin B NN ~ 6,216 0.14 0.9
Infiltration Basin 8 00 15,209 0.35 0.9
Infiltration Basin B PP 2,893 0.07 0.2
Infikration Basin B RR 9,801 0.23 0.9
Infiltration Basin B SS 9,577 0.22 0.9
Infiltration Basin B UU 27,489 0.63 0.9
TOTAL - Basin B 381,599 8.76
Imperv. 378,706
Perv. 2,893
In 0.99
Sand Filter A M 3,788 0.09 0.2
Sand Filter A N 76,695 1.76 0.9
Sand Fitter A P 2 880 0.07 0.2
Sand Fiker A O v 46 292 1.06 0.9
Sand Filter A U 2 876 0.07 0.2
Sand Filter A V 45 176 1.04 0.9
SandFikerA BB 35,378 0.81 0.9
TOTAL - Filter A 213,085 4.89
Imperv. 203,541
Perv. 9,544
In 0.96
Sand Fiker B X 2,937 0.07 0.2
Sand Fiker B Y 44,325 1.02 0.9
Sand Fiker B Z 6,182 0.14 0.2
Sand Filter B AA ~ 37,486 0.86 0.9
Sand Fiker B DD `O 26 983 0.62 0.9
Sand Fiker B EE 49,923 1.15 0.9
Sand Filter B FF 28 324 0.65 0.9
Sand Fiker B QQ 3,859 0.09 0.9
TOTAL - Fitter B 200,019 4.59
Imperv. 190,900
Perv. 9,119
In 0.95

Waynesville Town Center
Rv=0.05+0.9*In
Table 2 -Runoff Coefficients
Drainage Area In Rv
Infiltration Basin A 0.89 0.85
Infiltration Basin B 0.99 0.94
Sand FilterA 0.96 0.91
Sand Finer B 0.95 0.91
V=3630"Ro"Rv"A
Ro=1"
Table 3 - Volume to be Controlled
Drainage Area A (ac) WQV (cft) Forebay (cft)
Infiltration Basin A 10.19 31,438 6,288
Infitration Basin B 8.76 29,993 5,999
Sand FilterA 4.89 16,153 3,230
Sand Filter B 4.59 15,151 3,030
Table 4 -Available Volumes
Drainage Area WQV (cft) Storage Elevations
Infiltration Basin A 32,427 2752.0-2754.0
Infiltration Basin B 30,553 2749.5-2754.0
Sand FilterA 16,221 2752.0-2755.0
Sand Filter B 16,996 2749.0-2752.0
Table 5 -Bypass Structures
Drainage Area Structures Weir Elevation
Infiltration Basin A #18 & #21 2754.0
Infitration Basin B #31a & #44 2754.0
Sand Finer A #9d 2755.0
Snad Filter B #26, #26a, & #27 2752.0

4S
Drainage Dist.
M,N,P,Q,U,V,BB
S F-A
Sand Filter A
Subcat Reach Pon Link)

Waynesville Sand Filter A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 4S: Drainage Dist. M,N,P,Q,U,V,BB
Hydrograph
32- - -- --- - - --- --
30- "
28- ' - ' --
26 I
24= - - - -
22- ' - -
,~
w 20=
3 18- - ~ - - -- ---- - ~----
LL 16 --- - - - ------- - - --
,,
14
12- - -
a- ' ' '
6_ I
r
~- - ~- Type II 24-hr 10yr-
'-
Rainfall=4.56"
- -;----~
Runoff Area=213,085'sf
---~- I
_ ---' Runoff Volume=70,745' cf
--- - Runoff bepth=3.98'' -
- ~ ~- --- Flow Length=83~`
-- '-_-. ---- -' - Tc=4.6 min
-- - -;---- --- -- - '; - -' --- --- CN=95
® Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 4S: Drainage Dist. M,N,P,Q,U,V,BB
Runoff = 32.23 cfs @ 11.95 hrs, Volume= 70,745 cf, Depth= 3.98"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
3,788 39 M - >75% Grass cover, Good, HSG A
76,695 98 N -Paved parking & roofs
2,880 39 P - >75% Grass cover, Good, HSG A
46,292 98 Q -Paved parking & roofs
2,876 39 U - >75% Grass cover, Good, HSG A
45,176 98 V -Paved parking & roofs
35,378 98 BB -Paved parking & roofs
213,085 95 Weighted Average
9,544 Pervious Area
203,541 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.2 230 0.0240 1.77 Sheet Flow, PVMT
Smooth surfaces n= 0.011 P2= 3.28"
0.6 122 0.0020 3.22 10.12 Circular Channel (pipe), Pipe #5~6
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50' n= 0.013
0.5 131 0.0038 4.44 13.95 Circular Channel (pipe), Pipe #6-#7
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50' n= 0.013
0.5 122 0.0022 3.92 19.24 Circular Channel (pipe), Pipe #7~8
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
0.5 132 0.0033 4.80 23.56 Circular Channel (pipe), Pipe #8-#9
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
0.3 101 0.0037 5.08 24.95 Circular Channel (pipe), Pipe #9~9A
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
4.6 838 Total

Waynesville Sand Filter A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond SF-A: Sand Filter A
Hydrograph
46 ;' 477f Bf5 lnflQw Area=2'.,13,085 sf
44:
42' --- ,9:94,5 Peak EIev=2,758.14'
erg
40- ~ ~ ---
38. ~ -- a:' ~~ Storage=.,17,257 ~cf
36' --- -,
~" -' --~---'-- ,_ r ~ - - '
34-
32
30- - ---,- - - --- - - - --- --- -- ------1---
28'- --- --- --- - I ------ - - - --- --- - - -- ----------
w 26- ~ ~ /; - ~ ~ ~---~ ~ - - - I-- 1---
u --- -- - ---~- - --
-- 24- ~ - , --~ ~ - r-- r---r-
3 22- -~- ~ - - - - --- - - ~ -r- --- - --- ------ ---
a 20' - -- --- --- -- ~ I - ~- - -- -
18- _ ~ - -- ---
14 ~
..
12- , , f',
~~
10
8 ~,
~-
^ Inflow
Outflow
® Primary
Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond SF-A: Sand Filter A
[88] Warning: Qout>Qin may require Finer Routing>1
Inflow Area = 213,085 sf, 95.52% Impervious, Inflow Depth = 3.98" for 10yr event
Inflow = 32.23 cfs @ 11.95 hrs, Volume= 70,745 cf
Outflow = 41.14 cfs @ 11.96 hrs, Volume= 70,745 cf, Atten= 0%, Lag= 0.5 min
Primary = 1.20 cfs @ 11.69 hrs, Volume= 51,357 cf
Secondary = 39.94 cfs @ 11.96 hrs, Volume= 19,388 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,758.14' @ 11.96 hrs Surf.Area= 8,638 sf Storage= 17,257 cf
Plug-Flow detention time= 62.4 min calculated for 70,745 cf (100% of inflow)
Center-of-Mass det. time= 62.4 min (828.2 - 765.8 )
Volume Invert Avail.Storage Storage Description
#1 2,752.00' 11,538 cf 5.00'W x 115.00'L x 4.00'H STONE x 15
34,500 cf Overall - 5,655 cf Embedded = 28,845 cf x 40.0% Voids
#2 2,753.00' 471 cf 24.0"D x 75.00'L Header x 2 Inside #1
#3 2,753.00' 5,184 cf 24.0"D x 110.00'L PIPE x 15 Inside #1
#4 2,753.00' 78 cf 4.00'D x 6.18'H MH 9a
17,271 cf Total Available Storage
Device Routing Invert Outlet Devices
#1 Primary 2,752.00' 6.000 in/hr Exfiltration over Horizontal area
#2 Secondary 2,755.00' 18.0" x 104.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.17' S= 0.0368'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Secondary 2,755.00' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
#4 Device 3 2,748.00' 30.0" x44.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,747.91' S= 0.0020 '/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
Primary OutFlow Max=1.20 cfs @ 11.69 hrs HW=2,753.02' (Free Discharge)
L1=Exfiltration (Exfiltration Controls 1.20 cfs)
econdary OutFlow Max=39.62 cfs @ 11.96 hrs HW=2,758.09' (Free Discharge)
2=Culvert (Inlet Controls 13.02 cfs @ 7.37 fps)
Orifice/Grate (Orifice Controls 26.60 cfs @ 8.47 fps)
4=Culvert (Passes 26.60 cfs of 41.56 cfs potential flow)

Waynesville Sand Filter A 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 4S: Drainage Dist. M,N,P,Q,U,V,BB
Hydrograph

30
0 25
LL
20
15-#

- ~ Hype ~I 24'rhr l0pyt'
Runoff Area=213,0851 sf
auno'ff 1/olume '=108,8:01! c;f
F~ujnoff, Depth=G.13~~
-,
,' -
~ 3~.
law Ler~g h 8
- ~ ~ ~ 1
G=~ ~ ~1'lll'I
,' ~ ,, ~ ,=
', ;CM~95
^ Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 4S: Drainage Dist. M,N,P,Q,U,V,BB
Runoff = 48.31 cfs @ 11.95 hrs, Volume= 108,801 cf, Depth= 6.13"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sf) CN Description
3,788 39 M - >75% Grass cover, Good, HSG A
76,695 98 N -Paved parking & roofs
2,880 39 P - >75% Grass cover, Good, HSG A
46,292 98 Q -Paved parking & roofs
2,876 39 U - >75% Grass cover, Good, HSG A
45,176 98 V -Paved parking & roofs
35,378 98 BB -Paved parking & roofs
213,085 95 Weighted Average
9,544 Pervious Area
203,541 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.2 230 0.0240 1.77 Sheet Flow, PVMT
Smooth surfaces n= 0.011 P2= 3.28"
0.6 122 0.0020 3.22 10.12 Circular Channel (pipe), Pipe #5-#6
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50' n= 0.013
0.5 131 0.0038 4.44 13.95 Circular Channel (pipe), Pipe #6~7
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50' n= 0.013
0.5 122 0.0022 3.92 19.24 Circular Channel (pipe), Pipe #7-#8
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
0.5 132 0.0033 4.80 23.56 Circular Channel (pipe), Pipe #8-#9
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
0.3 101 0.0037 5.08 24.95 Circular Channel (pipe), Pipe #9~#9A
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63' n= 0.013
4.6 838 Total

Waynesville Sand Filter A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond SF-A: Sand Filter A
Hydrograph
~~ ~ ~ ~ s°~~°rg ``s~ Inflow Area=213,08~5'~~sf
55 I
'~~ .9~e~s '~ ~~ ~ Peak Elev=2x769.60'
50- ~ -
~'
storage=:17,271. cf
45- ~- - -
40 - - - -
35 - I - - ----- - -
30 -- - - - - --~ - - --- --- - -- - --
o . , -- -- --- - - - --- - --- -- ---
25 - -~- -_---•-
u. ~ ~ ~~/
I
.---
20- ~ . --~--,--~ - / ~~ ~- -~---~--- ---,---,---,-- ---~---,---,-,--,---,----,---~,---
,/ I
^ Inflow
^ Outflow
® Primary
^ Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HvdroCAD® 8.50 SAMPLER s/n 026033 ©2007 HvdroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond SF-A: Sand Filter A
[93] Warning: Storage range exceeded by 0.42'
[88] Warning: Qout>Qin may require Finer Routing>1
[85] Warning: Oscillations may require Finer Routing>1
Inflow Area = 213,085 sf, 95.52% Impervious, Inflow Depth = 6.13" for 100yr event
Inflow = 48.31 cfs @ 11.95 hrs, Volume= 108,801 cf
Outflow = 50.36 cfs @ 11.95 hrs, Volume= 108,801 cf, Atten= 0%, Lag= 0.0 min
Primary = 1.20 cfs @ 11.38 hrs, Volume= 65,552 cf
Secondary = 49.16 cfs @ 11.95 hrs, Volume= 43,249 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,759.60' @ 11.95 hrs Surf.Area= 8,638 sf Storage= 17,271 cf
Plug-Flow detention time= 55.5 min calculated for 108,765 cf (100% of inflow)
Center-of-Mass det. time= 55.5 min (811.3 - 755.8 )
Volume Invert Avail.Storage Storage Description
#1 2,752.00' 11,538 cf 5.00'W x 115.00'L x 4.00'H STONE x 15
34,500 cf Overall - 5,655 cf Embedded = 28,845 cf x 40.0% Voids
#2 2,753.00' 471 cf 24.0"D x 75.00'L Header x 2 Inside #1
#3 2,753.00' 5,184 cf 24.0"D x 110.00'L PIPE x 15 Inside #1
#4 2,753.00' 78 cf 4.00'D x 6.18'H MH 9a
17,271 cf Total Available Storage
Device Routing Invert Outlet Devices
#1 Primary 2,752.00' 6.000 in/hr Exfiltration over Horizontal area
#2 Secondary 2,755.00' 18.0" x 104.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.17' S= 0.0368'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Secondary 2,755.00' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
#4 Device 3 2,748.00' 30.0" x44.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,747.91' S= 0.0020'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
Primary OutFlow Max=1.20 cfs @ 11.38 hrs HW=2,753.01' (Free Discharge)
t1=Exfiltration (Exfiltration Controls 1.20 cfs)
econdary OutFlow Max=48.97 cfs @ 11.95 hrs HW=2,759.57' (Free Discharge)
2=Culvert (Inlet Controls 16.63 cfs @ 9.41 fps)
Orifice/Grate (Orifice Controls 32.34 cfs @ 10.29 fps)
4=Culvert (Passes 32.34 cfs of 50.53 cfs potential flow)

6S
Drainage Dist.
X,Y,Z,AA, DD, EE, FF, QQ
SF-B
Sand Filter B
Subcat Reach Pon Link

Waynesville Sand Filter B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 6S: Drainage Dist. X,Y,Z,AA,DD,EE,FF,QQ
Hydrograph
34- ®Runoff
32. s~.oa crs
30- - -- --- Type 11 24-hr 10yr
28- -
--~ -- ~-- , - -~ ; - : - - Rainfall-4.56.,
--~----
26
'-_ ' ' - -- '-- unoff Area2~0,019 sf
24.
22= _ _-- __ ' Runoff Volurne.=66,407 cf
v -, I Runoff Depth=3.9
a-
--
_o ,6= =524
T Flow Length
14 - - -- -, - - ----;--- - Tc=3.8 min
12 , _ ~ ~ -- ----'- - ---- --- - - ~ -
10. -- - C
8-
6-
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter B 2008 Type II 24-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 6S: Drainage Dist. X,Y,Z,AA,DD,EE,FF,QQ
Runoff = 31.04 cfs @ 11.94 hrs, Volume= 66,407 cf, Depth= 3.98"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
26,983 98 DD -Paved Parking
49,923 98 EE -Paved Parking
28,324 98 FF -Paved Parking
3,859 98 QQ -Paved Parking
2,937 39 X -Grass
44,325 98 Y -Paved Parking
182
6 39 Z -Grass
,
37,486 98 AA -Paved Parking
200,019 95 Weighted Average
9,119 Pervious Area
190,900 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.2 230 0.0240 1.77 Sheet Flow, PVMT
Smooth surfaces n= 0.011 P2= 3.28"
0.8 132 0.0020 2.66 4.70 Circular Channel (pipe), MH#8a to MH#9b
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
0.8 162 0.0035 3.52 6.21 Circular Channel (pipe), MH#9b to MH#26a
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corruaated PE, smooth interior
3.8 524 Total

Waynesville Sand Filter B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond SF-B: Sand Filter B
Hydrograph
^ Inflow
• ~ ~ .- :-- -, ^ Outflow
38.53°,5 ' inflow Ares=200 019 sf ®Frimary
42.~ ~ ~ ~ .? ~~ ~~ ~~~ ~ ~ ~ f ^ Secondary
~;
40= __ 37U7ofs ~,5' Peak Efev=2,754.79'.
38-: - ~ .
36 -- $toragQ=15,349 cf
34 ° _ _ /
30- - - ~ - t
3 22 ; ~ - - ~ - -- - -
0 20- -- ~ ~ --, ~ - - , --I
..
." ~ ~ ~ ~ ~ '
16- ~ _ _________________________ _______ ____________________,
14_
12: '~
8=
6 :rs
4-
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond SF-B: Sand Filter B
[88] Warning: Qout>Qin may require Finer Routing>1
[85] Warning: Oscillations may require Finer Routing>1
Inflow Area = 200,019 sf, 95.44% Impervious, Inflow Depth = 3.98" for 10yr event
Inflow = 31.04 cfs @ 11.94 hrs, Volume= 66,407 cf
Outflow = 38.53 cfs @ 11.93 hrs, Volume= 66,406 cf, Atten= 0%, Lag= 0.0 min
Primary = 1.46 cfs @ 11.93 hrs, Volume= 53,226 cf
Secondary = 37.07 cfs @ 11.93 hrs, Volume= 13,181 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,754.79' @ 11.93 hrs Surf.Area= 10,513 sf Storage= 15,349 cf
Plug-Flow detention time= 57.8 min calculated for 66,406 cf (100% of inflow)
Center-of-Mass det. time= 57.8 min (822.8 - 765.1 )
Volume Invert Avail.Storage Storage Description
#1 2,749.00' 10,841 cf 30.00'W x 350.00'L x 3.00'H STONE
31,500 cf Overall - 4,398 cf Embedded = 27,102 cf x 40.0% Voids
#2 2,749.00' 4,398 cf 24.0"D x 350.00'L PIPE x 4 Inside #1
#3 2,746.00' 133 cf 4.00'D x 10.58'H STM MH #27
15,372 cf Total Available Storage
Device Routina Invert Outlet Devices
#1 Primary 2,746.00' 6.000 in/hr Exfiltration over Horizontal area
#2 Secondary 2,745.18' 36.0" x 94.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,745.00' S= 0.0019'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,752.00' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
#4 Device 2 2,752.00' 12.0" Vert. Orifice/Grate C= 0.600
#5 Device 2 2,752.00' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
Primary OutFlow Max=1.46 cfs @ 11.93 hrs HW=2,754.76' (Free Discharge)
L1=Exfiltration (Exfiltration Controls 1.46 cfs)
econdary OutFlow Max=37.07 cfs @ 11.93 hrs HW=2,754.76' (Free Discharge)
=Culvert (Passes 37.07 cfs of 96.73 cfs potential flow)
3=Orifice/Grate (Orifice Controls 6.28 cfs @ 7.99 fps)
4=Orifice/Grate (Orifice Controls 5.68 cfs @ 7.23 fps)
=Orifice/Grate (Orifice Controls 25.11 cfs @ 7.99 fps)

Waynesville Sand Filter B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 6S: Drainage Dist. X,Y,Z,AA,DD,EE,FF,QQ
Hydrograph
s ---- - --
_ ~-
Type II 24~h,r 10pyr
. '----. Ra'rnfal
- 1=6.72..
Runoff Area=200,019 sf
Runoff Volume=102,_1,30 cf
Runoff Depth=6.13"
. Flow Length~524'
-'--- --- --- -- Tc=3.8 min
- - ----=
-- T --''-- CN=95
Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 6S: Drainage Dist. X,Y,Z,AA,DD,EE,FF,QQ
Runoff = 46.51 cfs @ 11.94 hrs, Volume= 102,130 cf, Depth= 6.13"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sf) CN Description
26,983 98 DD -Paved Parking
49,923 98 EE -Paved Parking
28,324 98 FF -Paved Parking
3,859 98 QQ -Paved Parking
2,937 39 X -Grass
44,325 98 Y -Paved Parking
6,182 39 Z -Grass
37,486 98 AA -Paved Parking
200,019 95 Weighted Average
9,119 Pervious Area
190,900 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.2 230 0.0240 1.77 Sheet Flow, PVMT
Smooth surfaces n= 0.011 P2= 3.28"
0.8 132 0.0020 2.66 4.70 Circular Channel (pipe), MH#8a to MH#9b
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
0.8 162 0.0035 3.52 6.21 Circular Channel (pipe), MH#9b to MH#26a
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE. smooth interior
3.8 524 Total

Waynesville Sand Filter B 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond SF-B: Sand Filter B
Hydrograph
- ~ - 4
50-
- ~ 4b.10 cfa
45
40- -
35
H 30- - F~
~ -
..
c 25- - -~
LL
20- - -
15- I I
10
i
Inflov~r Ar
ea=200,01',.9 sf
Peak E~ev=2,756.04"
Storage=,15,365 cf
^ Inflow
^ Outflow
Primary
^ Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Sand Filter B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond SF-B: Sand Filter B
[88] Warning: Qout>Qin may require Finer Routing>1
[85] Warning: Oscillations may require Finer Routing>1
Inflow Area = 200,019 sf, 95.44% Impervious, Inflow Depth = 6.13" for 100yr event
Inflow = 46.51 cfs @ 11.94 hrs, Volume= 102,130 cf
Outflow = 46.56 cfs @ 11.95 hrs, Volume= 102,129 cf, Atten= 0%, Lag= 0.2 min
Primary = 1.46 cfs @ 11.84 hrs, Volume= 68,309 cf
Secondary = 45.10 cfs @ 11.95 hrs, Volume= 33,820 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,756.04' @ 11.95 hrs Surf.Area= 10,513 sf Storage= 15,365 cf
Plug-Flow detention time= 49.9 min calculated for 102,095 cf (100% of inflow)
Center-of-Mass det. time= 49.9 min (805.0 - 755.1 )
Volume Invert Avail.Storage Storage Description
#1 2,749.00' 10,841 cf 30.00'W x 350.00'L x 3.00'H STONE
31,500 cf Overall - 4,398 cf Embedded = 27,102 cf x 40.0% Voids
#2 2,749.00' 4,398 cf 24.0"D x 350.00'L PIPE x 4 Inside #1
#3 2,746.00' 133 cf 4.00'D x 10.58'H STM MH #27
15,372 cf Total Available Storage
Device Routing Invert Outlet Devices
#1 Primary 2,746.00' 6.000 in/hr Exfiltration over Horizontal area
#2 Secondary 2,745.18' 36.0" x 94.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,745.00' S= 0.0019'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,752.00' 12.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
#4 Device 2 2,752.00' 12.0" Vert. Orifice/Grate C= 0.600
#5 Device 2 2,752.00' 24.0" Horiz. Orifice/Grate Limited to weir flow C= 0.600
Primary OutFlow Max=1.46 cfs @ 11.84 hrs HW=2,753.33' (Free Discharge)
L1=Exfiltration (Exfiltration Controls 1.46 cfs)
econdary OutFlow Max=44.89 cfs @ 11.95 hrs HW=2,756.00' (Free Discharge)
=Culvert (Passes 44.89 cfs of 103.90 cfs potential flow)
3=Orifice/Grate (Orifice Controls 7.56 cfs @ 9.63 fps)
=Orifice/Grate (Orifice Controls 7.07 cfs @ 9.01 fps)
5=Orifice/Grate (Orifice Controls 30.25 cfs @ 9.63 fps)

8S
Drainage Dist
>in A
2S
Drainage Dist.
1 A,
Subcat Reach on Link

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 2S: Drainage Dist. 1A,1B,A1,A2,6-G,H1,H2,I,L,O,XX
az- ---
40= " ~ ~ --- ~~-
38 C
36=
34=
32: ' -- --- --
30- i---. ~ ~--
28= - .--
26- ---
a 24 -
~ 22 ' ' -
c 20 --
u. 18-
,6: --- ~-
14 ' ' ,---, - - ------' ---
12:
10: -- - ' ----'---
,,
~~~~
8,
Hydrograph
s - -- -
Type 1124-h r '~ Oyr
', - --- --- -- ; ' Rainfall=4.56"
- Runoff Area=25,810 sf
', , - ~ ~~ Runoff.,Volume=79~~,251 cf
_, Runoff Depth=;3.66"
', -', --- =~6'5'
- ~ Flow Lengfih
Tc=4.5 min
y -- -- 'CN~~~
® Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Time (hours)

Waynesville Infiltration Basin A 2008 Type 11 24-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 2S: Drainage Dist. 1A,1 B,A1,A2,B-G,H1,H2,I,L,O,XX
Runoff = 37.69 cfs @ 11.95 hrs, Volume= 79,251 cf, Depth= 3.66"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
* 34,524 98 Lot 1-1A
* 13, 827 39 Lot 1-1 B
49,838 98 Drainage District Al
* 27,952 98 Drainage District A2
* 25,115 98 Drainage District B
* 3,710 39 Drainage District C
4,271 98 Drainage District D
5,850 98 Drainage District E
* 7,973 98 Drainage District F
* 9,011 98 Drainage District G
* 4,184 39 Drainage District H1
* 5,161 98 Drainage District H2
* 8,325 98 Drainage District I
* 40,042 98 Drainage District L
* 16,417 98 Drainage District O
* 3,610 39 Drainage District XX
259,810 92 Weighted Average
25,331 Pervious Area
234,479 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.3 200 0.0150 1.43 Sheet Flow, Lot 1 Parking Lot
Smooth surfaces n= 0.011 P2= 3.28"
0.6 80 0.0025 2.27 1.78 Circular Channel (pipe), MH#14 to MH#3
Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'
n= 0.013 Corrugated PE, smooth interior
0.7 209 0.0052 5.19 16.31 Circular Channel (pipe), MH#3 to MH#16
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.7 212 0.0052 5.19 16.31 Circular Channel (pipe), MH#16 to MH#17
Diam= 24.0" Area= 3.1 sf Perim= Ei.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.1 40 0.0052 5.19 16.31 Circular Channel (pipe), MH#17 to MH#18
Diam= 24.0" Area= 3.1 sf Perim= ti.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
0.1 24 0.0052 5.19 16.31 Circular Channel (pipe), MH#18 to IB-A
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE smooth interior
4.5 765 Total

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 8S: Drainage Dist. S-T
Hydrograph
24-1 - -- -- - ®Runoff
2z ea cts
2z= -- --- - -- Type If 24-hr '~Oyr
2, ` - - - Rainfall=4.56••
20. - -
18: " -
19- ' ~ 17wnoff area=184,267 s~
17. - -
16` ,-- ~ ~ - - - t ...
Run ff Vol me 66.
ti , --: _ ,~96 cf
~- - ~ ~ - - u
,-. 15-
,4- Runoff Depth=4.32,,
;; - ~ Flow Length=756'
,0= - -. -- ' Tc=91.8 mfn
9= -, `- - -
."
8- " -' ~ ~---~ - ------- - --- --- - - -- - --- -- - --
7- -`--- - r-- r-- -- --- --- - - -
' -` --` -~
6= ---,- ---'---~-- ~ - -- - -- -
4- ~ - --
3, - --- +
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Time (hours)

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 8S: Drainage Dist. S-T
Runoff = 22.84 cfs @ 12.03 hrs, Volume= 66,396 cf, Depth= 4.32"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
176,928 98 Paved parking & roofs
7,339 98 Paved parking & roofs
184,267 98 Weighted Average
184,267 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
9.6 300 0.0010 0.52 Sheet Flow, WM Roof
Smooth surfaces n= 0.011 P2= 3.28"
1.3 251 0.0030 3.26 5.75 Circular Channel (pipe), MH#19 to MH#20
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
0.4 91 0.0022 3.38 10.61 Circular Channel (pipe), MH#20 to MH#21
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.5 114 0.0030 3.94 12.39 Circular Channel (pipe), MH#21 to IB-A
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE. smooth interior
11.8 756 Total

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
H r~droCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond IB-A: Infiltration Basin A
Hydrograph
_ -- --___,-- ~ 56.43 cf
60-
55- - --- ,
so=
45 -,
40
35- 27.64 crs
1:
0 30- - ~ '
LL _ ~ - - - - ~ - 24.26 cfs
25
20 I
15-
... ~`>
- -- -
Inflow Area=444,077 s
-- '~, '~ Peak ~E~le~~=2,754.9$'
Stolra-ge=44,309 Cf
^ Inflow
^ Outflow
®Primary
^ Secondary
0 1 2 3 4 5 6 7 8 9 101112131415161718192021222324252627282930313233343536
Time (hours)

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond IB-A: Infiltration Basin A
Inflow Area = 444,077 sf, 94.30% Impervious, Inflow Depth = 3.94" for 10yr event
Inflow = 56.43 cfs @ 11.96 hrs, Volume= 145,647 cf
Outflow = 27.54 cfs @ 12.09 hrs, Volume= 145,647 cf, Atten= 51 %, Lag= 7.3 min
Primary = 3.28 cfs @ 12.09 hrs, Volume= 108,579 cf
Secondary = 24.26 cfs @ 12.09 hrs, Volume= 37,068 cf
Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Peak Elev= 2,754.98' @ 12.09 hrs Surf.Area= 17,690 sf Storage= 44,309 cf
Plug-Flow detention time= 60.0 min calculated for 145,606 cf (100% of inflow)
Center-of-Mass det. time= 60.0 min (827.3 - 767.3 )
Volume Invert Avail.Storage Storage Description
#1 2,752.00' 63,238 cf Custom Stage Data (Irregular) Listed below
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
2, 752.00 12,112 592.0 0 0 12,112
2,753.00 13,915 613.0 13,003 13,003 14,214
2, 754.00 15, 786 633.0 14, 841 27, 844 16, 293
2, 755.00 17, 722 654.0 16, 745 44, 588 18, 537
2,756.00 19,592 675.0 18,649 63,238 20,856
Device Routing Invert Outlet Devices
#1 Primary 2,752.00' 7.670 in/hr Exfiltration over Wetted area
#2 Secondary 2,750.28' 36.0" x 56.0' long Culvert CPP, projecting, no headwall, Ke= 0.900
Outlet Invert= 2,750.00' S= 0.0050'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,755.00' 24.0' long Sharp-Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 2,752.25' 24.0" x 74.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.68' S= 0.0077'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#5 Device 4 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#6 Secondary 2,752.38' 24.0" x 54.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.57' S= 0.0150'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#7 Device 6 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#8 Secondary 2,755.00' 20.0' long x 5.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00 3.50 4.00 4.50 5.00 5.50
Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65
2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88

Waynesville Infiltration Basin A 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Primary OutFlow Max=3.28 cfs @ 12.09 hrs HW=2,754.98' (Free Discharge)
t1=Exfiltration (Exfiltration Controls 3.28 cfs)
~dary OutFlow Max=24.24 cfs @ 12.09 hrs HW=2,754.98' (Free Discharge)
culvert (Passes 0.00 cfs of 48.09 cfs potential flow)
3=Sharp-Crested Rectangular Weir (Controls 0.00 cfs)
culvert (Passes 12.12 cfs of 18.49 cfs potential flow)
5=Sharp-Crested Rectangular Weir (Weir Controls 12.12 cfs @ 3.24 fps)
culvert (Passes 12.12 cfs of 19.15 cfs potential flow)
~7=Sharp-Crested Rectangular Weir (Weir Controls 12.12 cfs @ 3.24 fps)
Broad-Crested Rectangular Weir (Controls 0.00 cfs)

Waynesville Infiltration Basin A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 2S: Drainage Dist. 1A,1 B,A1,A2,B-G,H1,H2,I,L,O,XX
60- ~ ~ ~ ~ ~ ~ I 57.67
55-
50-
45- I I ;
40- ; ;
35:
0 30- ; --~ -
LL
25 -
20-
15 ;
10 ;
5- "
Hydrograph
-~ ~ ~ ~ T ~eI ~~
~' ~ ~ ~ ~ ~ ~ ~~ ~Yp 1 24~~hr 100~yr
~~
; Rainfall=6!72"
f Area=~
' Runof 59,81'.0 sf
- off ,Volume=125,fi0
Run 9 cf
p ~7
Runoff be th~5. g'
'Flow Length=765`
5 min.
T
c 4.
-; -- -- , CN,=9~
® Runoff
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Time (hours)

Waynesville Infiltration Basin A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 2S: Drainage Dist. 1A,1 B,A1,A2,6-G,H1,H2,I,L,O,XX
Runoff = 57.67 cfs @ 11.95 hrs, Volume= 125,109 cf, Depth= 5.78"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sfl CN Description
34,524 98 Lot 1-1A
13,827 39 Lot 1-1 B
49,838 98 Drainage District Al
27,952 98 Drainage District A2
25,115 98 Drainage District B
3,710 39 Drainage District C
4,271 98 Drainage District D
5,850 98 Drainage District E
7,973 98 Drainage District F
9,011 98 Drainage District G
4,184 39 Drainage District H 1
5,161 98 Drainage District H2
'` 8,325 98 Drainage District I
40,042 98 Drainage District L
16,417 98 Drainage District O
3,610 39 Drainage District XX
259,810 92 Weighted Average
25,331 Pervious Area
234,479 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.3 200 0.0150 1.43 Sheet Flow, Lot 1 Parking Lot
Smooth surfaces n= 0.011 P2= 3.28"
0.6 80 0.0025 2.27 1.78 Circular Channel (pipe), MH#14 to MH#3
Diam= 12.0" Area= 0.8 sf Perim= 3.1' r= 0.25'
n= 0.013 Corrugated PE, smooth interior
0.7 209 0.0052 5.19 16.31 Circular Channel (pipe), MH#3 to MH#16
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.7 212 0.0052 5.19 16.31 Circular Channel (pipe), MH#16 to MH#17
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.1 40 0.0052 5.19 16.31 Circular Channel (pipe), MH#17 to MH#18
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior

Waynesville Infiltration Basin A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
0.1 24 0.0052 5.19 16.31 Circular Channel (pipe), MH#18 to IB-A
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
4.5 765 Total

Waynesville Infiltration Basin A 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 8S: Drainage Dist. S-T
36 -- -- - - 33.7ec
32
30= - _ -
28_ ,
26= ' -
a 22 ~- -- -------------- ---- -
20= ' - -'~
c 18- ~ ' ----- -
LL 16_ I I I
14-
,z-
,o-
8: I
8- I
4- I
Hydrograph
--j-- j - j --; ~ - _
_ - -' -- - Type'II'2~4 hr 'I OOyr
---- ' _'- Rainfall=6:72'
i ', ', ~twr>toff Aria=!1$4,,267 sf
----,- ' ', -'' Runoff Volume-99,522 cf
- . - Runoff Depth-=6.48"
------,- -; -~------ Flow Length-756'
'- -- Tc=11.8 min
--~- ~ ----- - - - , -' --, --, CN~~8
® Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Time (hours)

Waynesville Infiltration Basin A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 8S: Drainage Dist. S-T
Runoff = 33.78 cfs @ 12.03 hrs, Volume= 99,522 cf, Depth= 6.48"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sfl CN Description
176,928 98 Paved parking & roofs
7,339 98 Paved parking & roofs
184,267 98 Weighted Average
184,267 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
9.6 300 0.0010 0.52 Sheet Flow, WM Roof
Smooth surfaces n= 0.011 P2= 3.28"
1.3 251 0.0030 3.26 5.75 Circular Channel (pipe), MH#19 to MH#20
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
0.4 91 0.0022 3.38 10.61 Circular Channel (pipe), MH#20 to MH#21
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.5 114 0.0030 3.94 12.39 Circular Channel (pipe), MH#21 to IB-A
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE smooth interior
11.8 756 Total

Waynesville Infiltration Basin A 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond IB-A: Infiltration Basin A
'. - ~- 85.
95-:
90= -
75.40 c
85: ~
$o= ~ ~ ~ _
77.95 cfs
75` r_
70= I
65=
60=
N SS. ~-__~, ___~_-----~ -_
~ 50- -_, -
0 45-
LL 40: -- -- -
35. ~ ~ ~ - -- ,- -
30: ~ ~ ~ ~ ~~ ~~ ~ I
25
20=
15-
Hydrograph
cfs ~ _ _ _ _ _ ~ '. '. '.
- Inflow Area=444',077 sf
-- Peak Elev=2,755.39'
- $tora~e~5'~,9~0 cf
^ Inflow
^ Outflow
®Primary
^ Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Time (hours)

Waynesville Infiltration Basin A 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond IB-A: Infiltration Basin A
Inflow Area = 444,077 sf, 94.30% Impervious, Inflow Depth = 6.07" for 100yr event
Inflow = 85.31 cfs @ 11.96 hrs, Volume= 224,631 cf
Outflow = 75.40 cfs @ 12.01 hrs, Volume= 224,631 cf, Atten= 12%, Lag= 2.6 min
Primary = 3.45 cfs @ 12.01 hrs, Volume= 139,217 cf
Secondary = 71.95 cfs @ 12.01 hrs, Volume= 85,414 cf
Routing by Stor-Ind method, Time Span= 0.00-36.00 hrs, dt= 0.01 hrs
Peak Elev= 2,755.39' @ 12.01 hrs Surf.Area= 18,460 sf Storage= 51,950 cf
Plug-Flow detention time= 53.3 min calculated for 224,569 cf (100% of inflow)
Center-of-Mass det. time= 53.3 min (811.5 - 758.2 )
Volume Invert Avail.Storage Storage Description
#1 2,752.00' 63,238 cf Custom Stage Data (Irregular) Listed below
Elevation Surf.Area Perim. Inc. Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq ft)
2, 752.00 12,112 592.0 0 0 12,112
2,753.00 13,915 613.0 13,003 13,003 14,214
2,754.00 15,786 633.0 14,841 27,844 16,293
2, 755.00 17, 722 654.0 16, 745 44, 588 18, 537
2,756.00 19,592 675.0 18,649 63,238 20,856
Device Routing Invert Outlet Devices
#1 Primary 2,752.00' 7.670 in/hr Exfiltration over Wetted area
#2 Secondary 2,750.28' 36.0" x 56.0' long Culvert CPP, projecting, no headwall, Ke= 0.900
Outlet Invert= 2,750.00' S= 0.0050'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,755.00' 24.0' long Sharp-Crested Rectangular Weir 0 End Contraction(s)
#4 Secondary 2,752.25' 24.0" x 74.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.68' S= 0.0077'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#5 Device 4 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#6 Secondary 2,752.38' 24.0" x 54.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,751.57' S= 0.0150'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#7 Device 6 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#8 Secondary 2,755.00' 20.0' long x 5.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00
2.50 3.00 3.50 4.00 4.50 5.00 5.50
Coef. (English) 2.34 2.50 2.70 2.68 2.68 2.66 2.65 2.65 2.65
2.65 2.67 2.66 2.68 2.70 2.74 2.79 2.88

Waynesville Infiltration Basin A 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Primary OutFlow Max=3.45 cfs @ 12.01 hrs HW=2,755.39' (Free Discharge)
t-1=Exfiltration (Exfiltration Controls 3.45 cfs)
ndary OutFlow Max=71.78 cfs @ 12.01 hrs HW=2,755.39' (Free Discharge)
Culvert (Passes 19.40 cfs of 51.08 cfs potential flow)
-3=Sharp-Crested Rectangular Weir (Weir Controls 19.40 cfs @ 2.05 fps)
Culvert (Passes 20.02 cfs of 21.21 cfs potential flow)
-5=Sharp-Crested Rectangular Weir (Weir Controls 20.02 cfs @ 3.86 fps)
Culvert (Passes 20.02 cfs of 21.47 cfs potential flow)
-7=Sharp-Crested Rectangular Weir (Weir Controls 20.02 cfs @ 3.86 fps)
Broad-Crested Rectangular Weir (Weir Controls 12.33 cfs @ 1.57 fps)

7S
Drains
yin B
Drainage Dist.
C~, GG, H H, KK-PP, RR, SS, U U
Subcat Reach on Link

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 5S: Drainage Dist. CC,GG,HH,KK-PP,RR,SS,UU
Hydrograph
r~~ '
32
30
28
26
24
w 22
~ 20
0 18
LL 16 _
14
12 I
10
8 I I I
6
4 ,
ail~aff ~A a ~2- f p4~ 3, s
-. ~
. aunaff
~_
Rurro~f b~pth=~~5~"
--~-
', ', ', ', Flow
h~944'----
L~ng#
Tc=6~~`-min
_ GN~9'l
R -, ,
^ Runoff
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 5S: Drainage Dist. CC,GG,HH,KK-PP,RR,SS,UU
Runoff = 34.32 cfs @ 11.97 hrs, Volume= 75,983 cf, Depth= 3.56"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
38,547 98 CC - Pvmt
34,312 98 GG - Pvmt
44,619 98 HH - Pvmt
21,912 98 KK - Pvmt
43,000 98 LL - Pvmt
2,838 98 MM - Pvmt
6,216 98 NN - Pvmt
15,209 98 00 - Pvmt
2,893 39 PP -Grass
9,801 98 RR - Pvmt
9,577 98 SS - Pvmt
27,489 39 UU -Grass
256,413 91 Weighted Average
30,382 Pervious Area
226,031 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.8 100 0.0023 0.59 Sheet Flow, Parking lot
Smooth surfaces n= 0.011 P2= 3.28"
0.7 137 0.0035 3.11 3.82 Circular Channel (pipe), MH#34 to MH#35
Diam= 15.0" Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.013 Corrugated PE, smooth interior
0.7 137 0.0040 3.33 4.09 Circular Channel (pipe), MH#35 to MH#36
Diam= 15.0" Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.013 Corrugated PE, smooth interior
0.7 195 0.0040 4.55 14.31 Circular Channel (pipe), MH#36 to MH#41
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.5 104 0.0020 3.74 18.34 Circular Channel (pipe), MH#41 to MH#54
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE, smooth interior
0.8 222 0.0030 4.58 22.47 Circular Channel (pipe), MH#54 to MH#44
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE, smooth interior
0.2 49 0.0035 4.94 24.27 Circular Channel (pipe), MH#44 to MH#39

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE, smooth interior
6.4 944 Total

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 7S: Drainage Dist. II,JJ,TT
Hydrograph
^ Runoff
20 L . 1- - 1929 cts J '
i ;
:.yam' oyr
18 ,
I -' I -
-- ', a1~=4:56"
I~u~affA= e
;3 -' = I~ulrrdff r~tolur~e=45~F48', cf
W 12
v - :Runoff b~p,th=4~~2~'
„ - -
- ~-
0 10 '
._ , ~Flo~v L$x>I~th=80Q
LL ~ ~ _____~ I '. ~ I I '.
9 ~ ~ ~__ ____,____ ____, ___ __ - ___,____ ____ ___ ____ ____ ___ ____ ____,- ---___ __ ___ - - ___
'.
~ ~ ~ ~ ~_
8 - -- - -
7
- ~-
~N 9
ti - ---- -- - - - ----- ----
5 ' ' ' i
3 r I I- - I - r
1
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 7S: Drainage Dist. II,JJ,TT
Runoff = 19.29 cfs @ 11.95 hrs, Volume= 45,108 cf, Depth= 4.32"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 10yr Rainfall=4.56"
Area (sfl CN Description
104,141 98 Drainage District I I
13,692 98 Drainage District JJ
7,353 98 Drainage District TT
125,186 98 Weighted Average
125,186 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
3.2 250 0.0104 1.29 Sheet Flow, HD Roof
Smooth surfaces n= 0.011 P2= 3.28"
0.6 155 0.0050 4.20 7.43 Circular Channel (pipe), MH#30 to MH#31
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
1.1 395 0.0075 6.24 19.59 Circular Channel (pipe), MH#31 to MH#32
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE. smooth interior
4.9 800 Total

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
f~droCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond IB-B: Infiltration Basin B
Hydrograph
', 53.23 cfs ~ '~
- ~r~flow Area=381,599 sf
55- ,Peak EI',ev- a
-2 755.28
50- ~ ~~ - ~ ', ~~ ~'~ '~ ~' storage=4~ $5.5 cf
45-
3s.oa crs '
' 35.31 cfs ~ '. '. ~ '. I '
35- - --~- -. -------,- ~---.- - - --, - ,- - --------
~ i~ ~ ~ ~ _
30- - - - - - - ,--- , -
0
u. 25 --- -- -----,---
20 - --~ ---- ---- -- -;-- -,-- - --
15- I `
10- ~ ~
_ ~ ~~ ~'
^ Inflow
Outflow
D Primary
D Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond IB-B: Infiltration Basin B
Inflow Area = 381,599 sf, 92.04% Impervious, Inflow Depth = 3.81" for 10yr event
Inflow = 53.23 cfs @ 11.97 hrs, Volume= 121,091 cf
Outflow = 36.08 cfs @ 12.03 hrs, Volume= 105,402 cf, Atten= 32%, Lag= 4.0 min
Primary = 0.77 cfs @ 12.03 hrs, Volume= 51,156 cf
Secondary = 35.31 cfs @ 12.03 hrs, Volume= 54,246 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,755.28' @ 12.03 hrs Surf.Area= 12,825 sf Storage= 45,855 cf
Plug-Flow detention time= 215.2 min calculated for 105,367 cf (87% of inflow)
Center-of-Mass det. time= 153.2 min (924.4 - 771.2 )
Volume Invert Avail.Storage Storage Description
#1 2,749.50' 55,570 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
2,749.50 1,608 267.0 0 0 1,608
2,750.00 4,427 444.0 1,451 1,451 11,624
2,751.00 5,813 474.0 5,104 6,555 13,863
2, 752.00 7, 301 505.0 6, 543 13, 098 16, 327
2,753.00 8,891 535.0 8,083 21,181 18,864
2,754.00 10,582 565.0 9,724 30,905 21,547
2,755.00 12,382 596.0 11,470 42,375 24,470
2,756.00 14,025 625.0 13,195 55,570 27,353
Device Routing Invert Outlet Devices
#1 Primary 2,749.50' 1.320 in/hr Exfiltration over Wetted area
#2 Secondary 2,746.00' 42.0" x 66.0' long Culvert CPP, projecting, no headwall, Ke= 0.900
Outlet Invert= 2,745.80' S= 0.0030'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,748.59' 24.0" x 105.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,746.00' S= 0.0247'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#4 Device 3 2,751.82' 24.0" x 158.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,749.92' S= 0.0120'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#5 Device 4 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#6 Device 3 2,751.94' 24.0" x 42.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,750.93' S= 0.0240'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#7 Device 6 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)

Waynesville Infiltration Basin B 2008 Type 1124-hr 10yr Rainfall=4.56"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
#8 Device 2 2,755.30' 24.0' long Sharp-Crested Rectangular Weir 0 End Contraction(s)
#9 Secondary 2,755.80' 30.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.77 cfs @ 12.03 hrs HW=2,755.27' (Free Discharge)
L1=Exfiltration (Exfiltration Controls 0.77 cfs)
ry OutFlow Max=35.26 cfs @ 12.03 hrs HW=2,755.27' (Free Discharge)
vert (Passes 35.26 cfs of 100.32 cfs potential flow)
:ulvert (Passes 35.26 cfs of 36.07 cfs potential flow)
4=Culvert (Passes 17.63 cfs of 23.70 cfs potential flow)
L5=Sharp-Crested Rectangular Weir (Weir Controls 17.63 cfs @ 3.69 fps)
Culvert (Passes 17.63 cfs of 23.11 cfs potential flow)
7=Sharp-Crested Rectangular Weir (Weir Controls 17.63 cfs @ 3.69 fps)
sharp-Crested Rectangular Weir (Controls 0.00 cfs)
ad-Crested Rectangular Weir (Controls 0.00 cfs)

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 5S: Drainage Dist. CC,GG,HH,KK-PP,RR,SS,UU
Hydrograph
-- ^ Runoff
53.00 cfs ;
'_. _!_ I ~4+~ 0
T
50 I I
45 I
40 ' 'I
35 ,
! !

3 30 I I
I,
LL -
25
2o I V I I I
15 I I I I I I I
10 "
5 ~J
~tpe ~ 2 ~ ~ 1 Oyu
', ', Rafrtfialh6:72--"'
RWnoff #rea-2
-f
- ~ - ~ - b6;41~ s
', ' ~lult>~c~ff uol~rtr>~e=12.1;,_0'14 c
-
U,nOff,_D~eptl'1 6_"
,- . ~-- Ic~YV_L h_~-~,
_ ~~~ ~
. ~ 4~'
ICN=91
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 5S: Drainage Dist. CC,GG,HH,KK-PP,RR,SS,UU
Runoff = 53.00 cfs @ 11.97 hrs, Volume= 121,014 cf, Depth= 5.66"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sfl CN Description
38,547 98 CC - Pvmt
34,312 98 GG - Pvmt
44,619 98 HH - Pvmt
21,912 98 KK - Pvmt
43,000 98 LL - Pvmt
2,838 98 MM - Pvmt
6,216 98 NN - Pvmt
15,209 98 00 - Pvmt
2,893 39 PP -Grass
9,801 98 RR - Pvmt
9,577 98 SS - Pvmt
27,489 39 UU -Grass
256,413 91 Weighted Average
30,382 Pervious Area
226,031 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
2.8 100 0.0023 0.59 Sheet Flow, Parking lot
Smooth surfaces n= 0.011 P2= 3.28"
0.7 137 0.0035 3.11 3.82 Circular Channel (pipe), MH#34 to MH#35
Diam= 15.0" Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.013 Corrugated PE, smooth interior
0.7 137 0.0040 3.33 4.09 Circular Channel (pipe), MH#35 to MH#36
Diam= 15.0" Area= 1.2 sf Perim= 3.9' r= 0.31'
n= 0.013 Corrugated PE, smooth interior
0.7 195 0.0040 4.55 14.31 Circular Channel (pipe), MH#36 to MH#41
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
n= 0.013 Corrugated PE, smooth interior
0.5 104 0.0020 3.74 18.34 Circular Channel (pipe), MH#41 to MH#54
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE, smooth interior
0.8 222 0.0030 4.58 22.47 Circular Channel (pipe), MH#54 to MH#44
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE, smooth interior
0.2 49 0.0035 4.94 24.27 Circular Channel (pipe), MH#44 to MH#39

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Diam= 30.0" Area= 4.9 sf Perim= 7.9' r= 0.63'
n= 0.013 Corrugated PE smooth interior
6.4 944 Total

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Subcatchment 7S: Drainage Dist. II,JJ,TT
Hydrograph
30 I ^ Runoff
28.52 cis
28 TYp~ I1-24=hr_1',OOyr
24
. ufla
1~5a'~~6 s
~ ~f
zz . la~'e~~ '~
i ~ - - -
F~undff'Vollurne 67;6 2
2U ', -', - - - ° - -- cf-
18 ', ', ', ', ', ', -' ', ' -', ' Rur'}o~f b~ptf d8"
3 16 ~ -
- --
- h=8
o aw Lengt
LL 14 --' ' ' ' ' ' ' - ' - '~ F~ - --' }
12 ~ Tc'=4.~~ rain
10 .,
._
-~ ~~
~' CSI- ,9$
8
6
q I I ~ I I I f I
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 11 24-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Subcatchment 7S: Drainage Dist. II,JJ,TT
Runoff = 28.52 cfs @ 11.95 hrs, Volume= 67,612 cf, Depth= 6.48"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Type II 24-hr 100yr Rainfall=6.72"
Area (sfl CN Description
104,141 98 Drainage District I I
13,692 98 Drainage District JJ
7,353 98 Drainage District TT
125,186 98 Weighted Average
125,186 Impervious Area
Tc Length Slope Velocity Capacity Description
(min) (feet) (ft/ft) (ft/sec) (cfs)
3.2 250 0.0104 1.29 Sheet Flow, HD Roof
Smooth surfaces n= 0.011 P2= 3.28"
0.6 155 0.0050 4.20 7.43 Circular Channel (pipe), MH#30 to MH#31
Diam= 18.0" Area= 1.8 sf Perim= 4.7' r= 0.38'
n= 0.013 Corrugated PE, smooth interior
1.1 395 0.0075 6.24 19.59 Circular Channel (pipe), MH#31 to MH#32
Diam= 24.0" Area= 3.1 sf Perim= 6.3' r= 0.50'
__ n= 0.013 Corrugated PE. smooth interior
4.9 800 Total

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Pond IB-B: Infiltration Basin B
Hydrograph
- --- , ~ --i ,~~ -;- etoocrs
', !,- . ,~ Inflow Are -
90 1-381 599 sf
85- -- 7z.23~r5 Peak Efev=2,756.85'
$5~ ~~ ~,~.aoors] ~ ~ ~; Storage=53,553 cf
70'
.~__. ._~
65:
60= - - - -- - I -
55' ,- -- -- -- - -- -- --- --- ~ -,- --- ----- -
3 45- ~ -- - - - -
LL 40- - - _- - __~
---- - ---
35-
- ~ -~
y
_,
25- i ,
20=
15: z ~'',
^ Inflow
O Outflow
®Primary
^ Secondary
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Time (hours)

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
Summary for Pond IB-B: Infiltration Basin B
Inflow Area = 381,599 sf, 92.04% Impervious, Inflow Depth = 5.93" for 100yr event
Inflow = 81.00 cfs @ 11.97 hrs, Volume= 188,627 cf
Outflow = 72.23 cfs @ 12.00 hrs, Volume= 170,556 cf, Atten= 11%, Lag= 2.2 min
Primary = 0.82 cfs @ 12.00 hrs, Volume= 55,426 cf
Secondary = 71.40 cfs @ 12.00 hrs, Volume= 115,130 cf
Routing by Stor-Ind method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs
Peak Elev= 2,755.85' @ 12.00 hrs Surf.Area= 13,780 sf Storage= 53,553 cf
Plug-Flow detention time= 152.4 min calculated for 170,499 cf (90% of inflow)
Center-of-Mass det. time= 102.1 min (863.6 - 761.6 )
Volume Invert Avail.Storage Storage Description
#1 2,749.50' 55,570 cf Custom Stage Data (Irregular) Listed below (Recalc)
Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area
(feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft)
2, 749.50 1, 608 267.0 0 0 1, 608
2,750.00 4,427 444.0 1,451 1,451 11,624
2, 751.00 5, 813 474.0 5,104 6, 555 13, 863
2,752.00 7,301 505.0 6,543 13,098 16,327
2, 753.00 8, 891 535.0 8, 083 21,181 18, 864
2, 754.00 10, 582 565.0 9, 724 30, 905 21, 547
2,755.00 12,382 596.0 11,470 42,375 24,470
2,756.00 14,025 625.0 13,195 55,570 27,353
Device Routing Invert Outlet Devices
#1 Primary 2,749.50' 1.320 in/hr Exfiltration over Wetted area
#2 Secondary 2,746.00' 42.0" x 66.0' long Culvert CPP, projecting, no headwall, Ke= 0.900
Outlet Invert= 2,745.80' S= 0.0030'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#3 Device 2 2,748.59' 24.0" x 105.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,746.00' S= 0.0247'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#4 Device 3 2,751.82' 24.0" x 158.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,749.92' S= 0.0120'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#5 Device 4 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)
#6 Device 3 2,751.94' 24.0" x 42.0' long Culvert CPP, square edge headwall, Ke= 0.500
Outlet Invert= 2,750.93' S= 0.0240'/' Cc= 0.900
n= 0.013 Corrugated PE, smooth interior
#7 Device 6 2,754.00' 4.0' long Sharp-Crested Rectangular Weir 2 End Contraction(s)

Waynesville Infiltration Basin B 2008 Type 1124-hr 100yr Rainfall=6.72"
Prepared by HydroCAD SAMPLER 1-800-927-7246 www.hydrocad.net Printed 2/8/2008
HydroCAD® 8.50 SAMPLER s/n 026033 ©2007 HydroCAD Software Solutions LLC
This report was prepared with the free HydroCAD SAMPLER, which is licensed for evaluation and
educational use only. For actual design or modeling applications you must use a full version of HydroCAD
which may be purchased at www.hydrocad.net. Full programs also include complete printed
documentation, technical support, training materials, and additional features which are essential for actual
design work.
#8 Device 2 2,755.30' 24.0' long Sharp-Crested Rectangular Weir 0 End Contraction(s)
#9 Secondary 2,755.80' 30.0' long x 10.0' breadth Broad-Crested Rectangular Weir
Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60
Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64
Primary OutFlow Max=0.82 cfs @ 12.00 hrs HW=2,755.85' (Free Discharge)
L1=Exfiltration (Exfiltration Controls 0.82 cfs)
~ry OutFlow Max=71.16 cfs @ 12.00 hrs HW=2,755.85' (Free Discharge)
Ivert (Passes 70.22 cfs of 104.11 cfs potential flow)
Culvert (Inlet Controls 37.86 cfs @ 12.05 fps)
-4=Culvert (Passes < 26.35 cfs potential flow)
L5=Sharp-Crested Rectangular Weir (Passes < 29.96 cfs potential flow)
Culvert (Passes < 25.82 cfs potential flow)
7=Sharp-Crested Rectangular Weir (Passes < 29.96 cfs potential flow)
Sharp-Crested Rectangular Weir (Weir Controls 32.36 cfs @ 2.43 fps)
gad-Crested Rectangular Weir (Weir Controls 0.94 cfs @ 0.58 fps)