20091096 Ver 1_More Info Received_20091223

7,-3, McGM
A S S O C I A T E S
December 22, 2009
Ms. Cyndi Karoly, Supervisor
401 Oversight and Express Permits Unit
1650 Mail Service Center
Mail Service Center
Raleigh, NC 27699-1650
Dear Ms. Karoly:
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DEC 2 3 2009
DENR - WATER QUALITY
WETLANDS AND STORMATER BRANCH
Re: 404/401 Permitting
First Health Hospice and Palliative Care
Moore County, North Carolina
In response to your letter dated December 18, 2009 requesting additional information for
the above mentioned project we offer the following comments and information.
1. The design information for the grassed swales has been provided. The grassed swales
have been designed to the BMP standards, where possible. All swales have a minimum
freeboard of .5ft. Swale #6, is over the 5% slope, due to space constraints, however,
beyond the level spreader the area flattens out significantly.
2. The design information for the level spreaders has been provided including the completed
Level Spreader Supplement Form and Checklist for each level spreader. The level
spreaders have been adjusted to meet the requirements. Please note that Level Spreaders
1,3,4, and 5 are located more than a hundred feet from the top of bank. They discharge to
wetlands with thick vegetation and woods and not directly to streams. In the
Supplements, line #48, which is top of bank elevation, the elevation at 50' out was used.
Level spreader #4 filter area is steeper (8%) than what is preferred, however, the drainage
area and flows are small, allowing the level spreader to be minimum in size. It is our
professional opinion that this level spreader should be able to function as designed.
3. Photos of the vegetation downstream of the level spreaders have been provided.
A. Photo 2472 is downstream of level spreader 1
B. Photo 2473 is downstream of level spreader 2a/2b
C. Photos 2474 - 2477 are downstream of level spreader 5
D. Photos 2478 - 2481 are downstream of level spreader 4
E. Photos 2482 - 2486 are downstream of level spreader 3
4. The design discharges of the bypass channels have been provided. See photos above.
E n g i n e e r i n g P l a n n i n g F i n a n c e
McGill Associates, P.A. - P.O. Box 1136, Hickory, NC 28603 - 1240 19th St. Lane NW, Hickory, NC 28601
Office.-828-328-2024 - Fax.- 828-328-3870
Ms. Cyndi Karoly
December 22, 2009
Page 2
5. The design information for the energy dissipaters has been provided.
We are looking forward to being able to proceed with this work. Please let me know if
you need any further information in order to secure approval for this planned work. I can be
reached at phone number 828-328-2024 or email David.Richmondkmc ig llengineers.com.
Thank you for your attention to these applications.
Sincerely,
McGILL ASSOCIATES, P.A.
"0'
DAVID E. RICHMOND, P.E.
Enclosure
DER
cc: Mr. Ken Averitte, NC Division of Water Quality - Fayetteville
Forrest Westall P.E., McGill Associates, P.A.
FA08.04040 \Design Phase\Documents\404_401 Permitting\DWQ Response Letter 12_22_09.doc
p [95WRB
DEC 3 2 2?Q9
R • yygTEkQUAUTY
VXpSpANp ST0'p'j' NIER BRANCH
STORMWATER CALCULATIONS
FOR
PROPOSED FIRST HEALTH HOSPICE & PALLIATIVE CARE
HOSPICE HOUSE AND ADMINISTRATION BUILDING
VILLAGE OF PINEHURST
MOORE COUNTY, NORTH CAROLINA
•
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ISO • ? ?Q 1
David Richmond, P.E.
McGill
A S S O C I A T E S
Engineering • Planning • Finance
Post Office Box 1136
Hickory, North Carolina 28603
mo December 22, 2009
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18" RCP
Worksheet for Circular Channel
is
Project Description
Project File g:\chris\haestad\frrw\project1.fm2
Worksheet 2a2b Bypass Channel
Flow Element Circular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.013
Channel Slope 0.008100 ft/ft
Diameter 18.00 in
Discharge 1.48 cfs
Results
Depth 0.40 ft
Flow Area 0.38 ft2
Wetted Perimeter 1.63 ft
Top Width 1.33 ft
Critical Depth 0.46 ft
Percent Full 26.75
• Critical Slope 0.004903 ft/ft
Velocity 3.90 ft/s
Velocity Head 0.24 ft
Specific Energy 0.64 ft
Froude Number 1.28
Maximum Discharge 10.17 cfs
Full Flow Capacity 9.45 cfs
Full Flow Slope 0.000199 ft/ft
Flow is supercritical.
•
12/21/09 FfowMaster v5.13
02:39:37 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
DESIGN OF RIPRAP OUTLET PROTECTION
•
Designed By: Will Rector Date: 9-Jun-09
Checked By: Dave Richmond Date: 9-Jun-09
Company: McGill Associates
Project Name: Moore County Hospice
Center
Project No.: 08.04040
User Input Data
Calculated Value
Reference Data
Site Location (City/Town) Pinehurst AT L ,11.St'(L 1012 a
Culvert Id. _ 1
Total Drainage Area (acres) 1.82
Step 1. TIeterminP the tailwater depth Frain rhannel rharartericticrq below the
pipc outlet for the, design capacity of the pi pc. If the tailwater depth is lcss
than half the outlet pipe diameter, it is classified n lnlmum tailwater condition.
If it is greater than half the pipe diameter: it is classified inaxii usnn condition.
Pipes that outlet onto ride fiat areas with no defined channel are assumed
to have a mini morn tails ater condition unless reliable flood stage ele ti ations
show otherwise.
Outlet pipe diameter, D. (in.) 18
Tailwater depth (in.) 3
Minimum/Maximum tailwater? Min TW (Fig. 8.06a)
Discharge (cfs) 5.64
Velocity (ft./s) 3.9
Step 2. Based on the tailw•ater conditions deternnined in step 1. enter Figure
8.06a ui F1gme 8.C 6br and deteninuC d501I]Irap s1LC Alld I11III11LIM11 a]P1 DIi lCI114t11
(L.). The d:, size is the median stone size mi a well-graded nprap apron.
Step 3. Deternnine apron width at the pipe outlet;, the apron 5hape. and the
apron width at the outlet end front the same figure used in Step 2_
Minimum TW Maximum TW
Figure 8.06a Figure 8.06b
Riprap d50, (ft.) 0.8
Minimum apron length, La (ft.) 10
Apron width at pipe outlet (ft.) 4.5 4.5
• Apron shape Polygon
Apron width at outlet end (ft.) 11.5 1.5

Step 4. Deterivane the ni=zrtuin stone diameter:
d x d.a
Minimum TW
Max Stone Diameter, dmax (ft.) 1.2
Step 5. Determine the apron thickness:
Apron thickness = 1.5 x dr1lax
• Apron Thickness(ft.)
Maximum TW
0
Minimum TW Maximum TW
1.8 0
Step 6. Fit the riprap apron to the site by making it level for the num'11111111
length, La, €roin Figure 8.06a or Figure 8.0617. Extend the apron farther
tkiEVnstirwii and ailuug t_lianwel bniiks taitil stability is assured. Krrlr tlir
apron as straight as passible and align it iv ith the lion of the receiving stream..
VakP any nPrecs:iry alignment hen&, iigar the pipit- outlet sn that the entrance
into the reccivu' ig strcatu is straight.
Some locations inay require lining of the entire channel cross section to assime
stability.
It itiaiy be urcrssmy to uicirdsc thr sirs of aipiap Wheic pivtrcticrii Uf 6C
channel side slopes is necessary (Appendix S M). Where overcalls exist at
pipe outlets or flows are excessive, a plunge pool should be considered, see
paigr 8.06.8.

•
0
Project: Moore Co. Hospice
Job No. 08.04040
Location: Moore County
Storm Frequency: 10 year
FIRST HEALTH HOSPICE AND PALLIATIVE CARE
Calculated by: CDB
Checked By: DER
Date: 12-22-09
CALCULATIONS
MOORE COUNTY HOSPICE
12!12/09

PERMANENT RIP-RAP DISS IPATORS
The ri -rap dissi ator was sized using the NY DOT method.

Dissipator Q10 V10 Zone L(ft. W M) Tin.) Stone
WS) ( 1
Swales
1 1.60 2.90 1 8 12 12 Class B
3 10.80 3.20 1 12 18 12 Class B
4 0.80 2.40 1 8 12 12 Class B
5 4.60 2.80 1 12 18 12 Class B
6 1.00 4.00 2 12 18 18 Class B

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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
PR0JEC.T'INFORAT1b
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date December 21, 2009
Drainage area number
II DESIGNINFORMATIOW
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 1 0-yr storm
0eak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
6 Design flow
s a bypass device provided?
cfS

31,417.00 f?
21,780.00 ft2
69.33 %
0.35
0.25 cfs
3.94 min
6.48 in/hr
1.64 cfs
N (Y or N)
N (Y or N)
Y (Y or N) Please complete filter strip characterization below.
N (Y or N)
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
0.00 ft
20.00 ft
30.00 ft
50.00 ft
367.00 fmsl
365.00 fmsl
4.00 % OK
N (Y or N) OK
44.00 sq ft OK
44 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
0.37 cfs
Y (Y or N) OK
Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (if applicable)
a-oes the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
16.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
3.00 ft
2.00 ft
8.00 ft
1.00 ft
2.90 cfs
? -I

'
y

M
M

1 B 1
•
•
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2
•
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.
r1
?J
•
Pagel Plan
Initials Sheet No.
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),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
3 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build-out.
Ci?Z 3 3. Section view of the level spreader (1" = 20' or larger) showing:
Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
cr6 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
6LJ 6. The supporting calculations.
7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
a+_61
C NIN 8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
Part III, page 1 of 1
g?oti wArF9°?
> y
ATA J T
NCDENR
0 STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
1 J' PROJECT, INFORMATION . rY' R b? ` uM ? f ta.41yts3w?
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date December 21, 2009
Drainage area number 2a2b
11. DESI601NFQRMATION1 For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area 78,953.00 ftz
Impervious surface area 37,026.00 ft
Percent impervious 46.90 %
Rational C coefficient 0.48
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
.Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cis
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
0.87 cfs
3.11 min
6.48 in/hr
5.64 cfs
N (Y or N)
N (Y or N)
N (Y or N)
Y (Y or N) Please complete filter strip characterization below.
0.00 ft
50.00 ft
0.00 ft
50.00 It
366.00 fmsl
362.00 fmsl
8.00 %
N (Y or N) OK
74.00 sq ft OK
13 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
0.99 cfs
Y (Y or N) OK
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (if applicable)
0-oes the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
13.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
3.00 ft
2.00 ft
11.00 ft
1.50 ft
2.40 cfs
rip-rap
+
M
•
•
1 B 1
1
M
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and Il. Design Summary, page 2 of 2
III:'{ REQUIREf),ITEMS,CHECKLlST ; Y . '.`??,? ??,, .«;"
•
•
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.
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),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
CA 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build-out.
CY96 "
'
or larger) showing:
3, Section view of the level spreader (1
= 20
Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope filter fabric.
C
?? '
I cx Cl 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
s 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations.
7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
-CO _ 8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
Part III, page 1 of 1
NCDENR
. STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
PROJECT INFORMATION
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date
Drainage area number
December 21, 2009
11:x. DESIGN INFOi'!IATION,: - .. ;?,4..
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Oeak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
89,662.00 ftz
37,026.00 ftz
41.30 %a
0.81
1.67 cfs
2.50 min
6.48 in/hr
10.80 cis
(Y or N)
(Y or N)
(Y or N)
(Y or N)
Please complete filter strip characterization below.
0.00 ft
40.00 It
10.00 ft
50.00 ft
361.00 fmsl
358.00 fmsl
6.00 % OK
N (Y or N) OK
87.00 sq ft OK
23 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
1.67 cfs
Y (Y or N) OK
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
V Bypass Channel Design (if applicable)
oes the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
40.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
3.00 ft
3.00 ft
12.60 ft
1.60 ft
3.20 cfs
straw with net lining
? `xr t
V ?a
I I
I ?
I
M M

? B 1
•

Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2
• Ilf: REQUIRED;?ITEMS-CHECj(LIST _ ? _ ? ??-`?'?????h-'"
•

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.
riq
1. Plans (1" - 50' or larger) of the entire site showing:
c,
Design at ultimate build-out,
- Off-site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
3 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build-out.
C06 103 3. Section view of the level spreader (1" = 20' or larger) showing:
Underdrain system (if applicable),
Level lip,
Upslope channel, and
? Downslope filter fabric.
r 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
0 1_ 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
c
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Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
Part III, page 1 of 1
g??E wnr?9?c
AN"A
• NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)I
1= PROJECT1NFORMATION
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date
Drainage area number
December 21, 2009
II. DESIGN iNF.ORMATION '
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
12,483.00 ftz
3,049.00 fe
24.43 %
0.41
0.12 cfs
3.60 min
6.48 in/hr
0.76 cfs
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
(Y or N)
(Y or N)
(Y or N) Please complete filter strip characterization below.
(Y or N)
0.00 ft
30.00 ft
20.00 ft
50.00 ft
373.00 fmsl
369.00 fmsl
8.00 % Level spreaders must be used in series if vegetation is >50% wooded.
N (Y or N) OK
35.00 sq ft OK
34 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
0.12 cfs
Y (Y or N) OK
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
V ypass Channel Design (if applicable)
oes the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
13.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
3.00 ft
2.00 ft
8.00 ft
1.00 ft
2.40 cfs
straw with net lining

M
•
•
1 B 1
M
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2
t?_ r
III fREQUIRED ITEM5.,NECKLIST -'
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.
CIA5 G? 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),
Forebay (if applicable),
High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
CIO D 3 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
- High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build-out.

AC
C L_
Gift NIA
•
3. Section view of the level spreader (1" = 20' or larger) showing:
Underdrain system (if applicable),
- Level lip,
Upslope channel, and
Downslope filter fabric.
4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations.
7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1
W AT FgQG
• NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
It'.= PROJECTANFORNlATION
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date December 21, 2009
Drainage area number 5
1.: DES.WINFORMATIQN= :r.
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area 59,704.00 fe
Impervious surface area 22,651.00 ff
Percent impervious 37.94 %
Rational C coefficient 0.52
Peak flow from the 1 in/hr storm 0.71 cfs
Time of concentration 4.25 min
Rainfall intensity, 1 0-yr storm 6.48 in/hr
eak flow from the 10-yr storm 4.62 cfs
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell? N (Y or N)
To a mulched bioretention cell? N (Y or N)
To a wetland? Y (Y or N) Please complete filter strip characterization below.
To a filter strip or riparian buffer? N (Y or N)
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass 0.00 ft
Width of dense ground cover 0.00 ft
Width of wooded vegetation 50.00 ft
Total width 50.00 ft
Elevation at downslope base of level lip 371.00 fmsl
Elevation at top of bank of the receiving water 368.00 fmsl
Slope (from level lip to to top of bank) 6.00 % OK
Are any draws present? N (Y or N) OK
Level Spreader Design
Forebay surface area 48.00 sq ft OK
Feet of level lip needed per cfs 65 ft/cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm? Y (Y or N)
Length based on the 10-yr storm? N (Y or N)
Length based on the BMP discharge rate? N (Y or N)
• Design flow 0.71 cfs
Is a bypass device provided? Y (Y or N) OK
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
F Bypass Channel Design (if applicable)
oes the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
47.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
V.VV
3.00 ft
12.00 ft
1.50 ft
2.80 cfs
straw with net lining
? -I

M
M

1 B 1
•
•
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and It. Design Summary, page 2 of 2
• III,; REQUIREb,ITEMS CHECKLIST R "` 'J, ;t t
xd_
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.
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),
- Forebay (if applicable),
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
High flow bypass system,
One foot topo lines between the level lip and top of stream bank,
• Proposed drainage easement, and
Design at ultimate build-out.
3. Section view of the level spreader (1" = 20' or larger) showing:
Underdrain system (if applicable),
- Level lip,
Upslope channel, and
- Downslope filter fabric.
CV6 tcc 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
CV6 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations.
M
) agreement.
7. A copy of the signed and notarized operation and maintenance (0&
NA ? 8. A copy of the deed restrictions (if required).
r?
U
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1
O?O?W???aT e9?G
TA
is NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
PROJECT INFORMATION'
Project name First Health Hospice and Palliative Care
Contact name Christine Brown, CPSWQ I McGill Associates
Phone number [phone]
Date December 21, 2009
Drainage area number 6
U? " DESIGN' INFORMATION
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cis
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
*Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cfs
Answer "Y" to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
12,135.00 ft2
8,712.00 ftz
71.79 %
0.56
0.16 cfs
4.25 min
6.48 in/hr
1.01 cfs
N (Y or N)
N (Y or N)
Y (Y or N)
N (Y or N)
Please complete filter strip characterization below.
0.00 ft
0.00 ft
50.00 ft
50.00 ft
371.00 fmsl
368.00 fmsl
6.00 % OK
N (Y or N) OK
17.00 sq ft OK
65 ft/cfs
Y (Y or N)
N (Y or N)
N (Y or N)
0.16 cfs
Y (Y or N) OK
Form SW401-Level Spreader, Fitter Strip, Restored Riparian Buffer-Rev.5 Parts I. and Il. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
13.00 ft Level spreader length OK.
N (Y or N)
N (Y or N)
Y (Y or N)
3.00 ft
2.00 ft
8.00 ft
1.00 ft
4.00 cfs
straw with net lining
* ?xr
i
M
•
0
1 B 1
1
M
Form SW401-Level Spreader, Finer Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 2 of 2
• lil: REQ000ITEM81'04ECkUST- y
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.
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),
- Forebay (if applicable),
- High flow bypass system,
- Maintenance access,
Proposed drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
cti 2. Plan details (1" = 30' or larger) for the level spreader showing:
- Forebay (if applicable),
- High flow bypass system,
- One foot topo lines between the level lip and top of stream bank,
- Proposed drainage easement, and
- Design at ultimate build-out.
CV6 3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
- Level lip,
- Upslope channel, and
- Downslope filter fabric.
C 611J 4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
tJ 1 5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
?. ?
CP! r
4, xz 6. The supporting calculations.

CA6 & 7. A copy of the signed and notarized operation and maintenance (0&M) agreement.
CyJ 8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
Part Ill, page 1 of 1
McG1*11
?. ASSOCIATES
Engineering • Planning • Finance
McGiUAnociates, P.A. P.O. Box 1136, Rk- kory, NC 28603
736 9 A.l4 Tnen NW TT rb rv NC28601 828-328-2024 Far: 828-328-3870
•
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PROJECT:
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PROJECT NO.: O -/o (o
DESCRIPTION: S -C j 519'???
CALCULATED BYCHECKED BY
DATE: 6- / 07 SHEET NO. OF 2-5
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ASSOCIATES
Engineering • Planning • Finance
McGill Associates, P.A. P.O. Box 1136, Hickory, NC 28603
123619th SG Lane NW 1&b?v NC28601 828-328-2024 Fax [phone]
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PROJECT: mc),ore- LD -
PROJECT NO.:
DESCRIPTION: L-C-1 URI-1 rl;zl cl C `q
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McGill Associates, P.A. 828-328-2024 Fax: [phone]
1240 19th St. Lane NW, Hickory, North Carolina 28601
PROJECT: ! ' lU?Y",- CQ • ? SY? f?C?,
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Hyd. No. 1
TTS1
Hydraflow Hydrographs by Intelisolve v9.23
Description A B C Totals
Sheet Flow
Manning's n-value = 0.020 0.011 0.011
Flow length (ft) = 133.0 0.0 0.0
Two-year 24-hr precip. (in) = 3.73 0.00 0.00
Land slope (%) = 2.00 0.00 0.00
Travel Time (min) = 2.27 + 0.00 + 0.00 = 2.27
Shallow Concentrated Flow
Flow length (ft) = 0.00 0.00 0.00
Watercourse slope (%) = 0.00 0.00 0.00
Surface description = Paved Paved Paved
Average velocity (ft/s) = 0.00 0.00 0.00
Travel Time (min) = 0.00 + 0.00 + 0.00 = 0.00
• Channel Flow
X sectional flow area (sgft) = 2.01 0.00 0.00
Wetted perimeter (ft) = 5.48 0.00 0.00
Channel slope (%) = 2.60 0.00 0.00
Manning's n-value = 0.035 0.015 0.015
Velocity (ft/s) = 3.51 0.00 0.00
Flow length (ft) = 350.0 0.0 0.0
Travel Time (min) = 1.66 + 0.00 + 0.00 = 1.66
Total Travel Time, Tc ................. ................... .......................................... 3.94 min
TR55 Tc Worksheet
•
TR55 Tc Worksheet
• Hydraflow Hydrographs by Intelisolve v9.23
Hyd. No. 2
TTS2
Description A B C Totals
Sheet Flow
Manning's n-value = 0.020 0.011 0.011
Flow length (ft) = 146.0 0.0 0.0
Two-year 24-hr precip. (in) = 3.73 0.00 0.00
Land slope (%) = 2.00 0:00 0.00
Travel Time (min) = 2.45 + 0.00 + 0.00 = 2.45
Shallow Concentrated Flow
Flow length (ft) = 0.00 0.00 0.00
Watercourse slope (%) = 0.00 0.00 0.00
Surface description = Paved Paved Paved
Average velocity (ft/s) = 0.00 0.00 0.00
Travel Time (min) = 0.00 + 0.00 + 0.00 = 0.00
*Channel Flow
X sectional flow area (sqft) = 3.06 0.00 0.00
Wetted perimeter (ft) = 6.62 0.00 0.00
Channel slope (%) = 1.30 0.00 0.00
Manning's n-value = 0.015 0.015 0.015
Velocity (ft/s) = 6.75 0.00 0.00
Flow length (ft) = 267.0 0.0 0.0
Travel Time (min) = 0.66 + 0.00 + 0.00 = 0.66
Total Travel Time, Tc .............................................................................. 3.11 min
0
TR55 Tc Worksheet
W
Hyd. No. 3
TTS3
Hydraflow Hydrographs by Intelisolve v9.23
Description A B C Totals
Sheet Flow
Manning's n-value = 0.020 0.011 0.011
Flow length (ft) = 143.0 0.0 0.0
Two-year 24-hr precip. (in) = 3.73 0.00 0.00
Land slope (%) = 2.00 0.00 0.00
Travel Time (min) = 2.41 + 0.00 + 0.00 = 2.41
Shallow Concentrated Flow
Flow length (ft) = 0.00 0.00 0.00
Watercourse slope (%) = 0.00 0.00 0.00
Surface description = Paved Paved Paved
Average velocity (ft/s) = 0.00 0.00 0.00
Travel Time (min) = 0.00 + 0.00 + 0.00 = 0.00

Channel Flow
X sectional flow area (sqft) = 3.19 0.00 0.00
Wetted perimeter (ft) = 6.74 0.00 0.00
Channel slope (%) = 3.00 0.00 0.00
Manning's n-value = 0.015 0.015 0.015
Velocity (ft/s) = 10.42 0.00 0.00
Flow length (ft) = 58.0 0.0 0.0
Travel Time (min) = 0.09 + 0.00 + 0.00 = 0.09
Total Travel Time, Tc .................................... .......................................... 2.50 min
•
TR55 Tc Worksheet
0
Hyd. No. 4
TTS4
Description A
Sheet Flow
Manning's n-value = 0.020
Flow length (ft) = 296.0
Two-year 24-hr precip. (in) = 3.73
Land slope (%) = 4.00
Travel Time (min) = 3.28
Shallow Concentrated Flow
Flow length (ft) = 0.00
Watercourse slope (%) = 0.00
Surface description = Paved
Average velocity (ft/s) = 0.00
Travel Time (min) = 0.00
Hydraflow Hydrographs by Intellsolve v9.23
B C
0.011 0.011
0.0 0.0
0.00 0.00
0.00 0.00
Totals
+ 0.00 + 0.00 = 3.28
0.00 0.00
0.00 0.00
Paved Paved
0.00 0.00
+ 0.00 + 0.00 = 0.00
• Channel Flow
X sectional flow area (sgft) = 1.37 0.00 0.00
Wetted perimeter (ft) = 4.66 0.00 0.00
Channel slope (%) = 2.40 0.00 0.00
Manning's n-value = 0.015 0.015 0.015
Velocity (ft/s) = 6.78 0.00 0.00
Flow length (ft) = 129.0 0.0 0.0
Travel Time (min) = 0.32 + 0.00 + 0.00 = 0.32
Total Travel Time, Tc ............ ...................................... ............................ 3.60 min

TR55 Tc Worksheet
0
Hyd. No. 5
TTS5
Description A
Sheet Flow
Manning's n-value = 0.020
Flow length (ft) = 232.0
Two-year 24-hr precip. (in) = 3.73
Land slope (%) = 1.50
Travel Time (min) = 3.98
Shallow Concentrated Flow
Flow length (ft) = 0.00
Watercourse slope (%) = 0.00
Surface description = Paved
Average velocity (ft/s) = 0.00
Travel Time (min) = 0.00
. Channel Flow
B C
0.011 0.011
0.0 0.0
0.00 0.00
0.00 0.00
+ 0.00 + 0.00
0.00
0.00
Paved
0.00
0.00
0.00
Paved
0.00
Hydraflow Hydrographs by Intelisolve v9.23
Totals
= 3.98
+ 0.00 + 0.00 = 0.00
X sectional flow area (sqft) = 5.47 0.00 0.00
Wetted perimeter (ft) = 8.95 0.00 0.00
Channel slope (%) = 1.20 0.00 0.00
Manning's n-value = 0.015 0.015 0.015
Velocity (ft/s) = 7.83 0.00 0.00
Flow length (ft) = 126.0 0.0 0.0
Travel Time (min) = 0.27 + 0.00 + 0.00 = 0.27
Total Travel Time, Tc .............................................................................. 4.25 min
0

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