Longs Chapel United Methodist Church - Wet Pond Supplemental

FORMS LOADED
.OJECT INFORMATION
1
Project Name
Longs Chapel United Methodist Church
2
Project Area ac
5.48
3
Coastal Welland Area ac
0
4
Surface Water Area ac
0
5
its this project Hi h or Low Density?
High
6
Does this project use an off -site SCM?
No
IMPLIANCE WITH 02H .1003(4)
7
Width of vegetated setbacks provided feet
30
8
Will the vegetated setback remain vegetated?
Yes
9
Is BUA other that as listed in .1003 4 o-d out of the setback?
Yes
0
Is streambank stabilization proposed on this project?
No
IMBER AND TYPE.OF SCMs:
1
Infiltration
0
2
-System
Btoretention Cell
0
3
Wet Pond
1
4
Stormwater Wetland
0
5
Permeable Pavement
0
6
Sand Filter
0
7
Rainwater Harvesting RWH
0
8
Green Roof
0
9
Level 5 reader-Fliter Strip LS-FS
0
!0
Disconnected Impervious Surface (DIS)
0
11
Treatment Swale
0
2
Dry Pond
0
!3
StormFitter
0
A
Silva Cell
0
'S
13ayf
niter
0
'8
Filters J
0
FORMS LOADED
:SIGNER CERTIFICATION
7
Name and Title:
R. Daniel Hatt, PLA, ASLA
!8
Organization:
WadeTrim lnc.
!9
Street address:
53 N. Market Street, Suite 200
10
City, State, Zip:
Asheville, NC 28801
11
Phone numbers :
828-712-3916
12
Email:
[e-mail]
Certification Statement:
I certify, under penalty of law that this Supplement-FZ form and all supporting information were prepared under my direction or
supervision; that the information provided in the form is, to the best of my knowledge and belief, true, accurate, and complete; and
that the engineering plans, specifications, operation and maintenance agreements and other supporting information are consistent
with the information provided here.
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1
Is this a hi h densi project?
Yes
2
If so number of drainage areaslSCIVIs
1
3
Is all/part of this project subject to previous rule
versions?
No
FORMS LOADED
WNAGE AREA INFORMATION
Entire Site
1
4
Type of SCM
Wet Pond
5
Total BUA in project (sq ft
152024 sf
6
New BUA on subdivided lots (subject to
permill€ng) M 0)
152024 sf
7permitting)
New BUA outside of subdivided lots (subject to
s
sf
B
Offsite -total area s9 ft) _
sf
9
0
_ - _
Offsite BUA (soft)_ _ _
Breakdown of new BUA outside subdivided lots:
sf
Parkin s fl
Sidewalk (sq ft
- Roof (sq ft
Roadway sq ft
Future (sq ft
- Other, please specify in the comment box
below (sq ft
1
New infiltrating permeable pavement an
subdivided lots (sq ft
sf
2
New Infiltrating permeable pavement outside of
subdivided lots (sq ft
sf
3permitting)
Exisitng BUA that will remain (not subject to
s fl
sf
4
Existing BUA that is alreaqy.permitted C ft
sf
5
Existing BUA that will be removed s ft
sf
6
Percent BUA
64%
7
IDesian storm inched --.
1 in
S IDesicin
volume of SCM cu 01
16916
9
Calculallon method for dest n volume
SAID
ca
)DlTIONAL INFORMATION
0
Please use this space to provide any additional information about the
dralnage area(s):

VET POND
1 Drainage area number 1
2 design volume of SCM (cu fl) 16916 of
YFRAI MAC FROM 0214.10S0
3
Is the SCM sized to treat the SW from all surfaces at build -out?
Yes
4
Is the SCM located away from contaminated soils?
Yes
5
What are the side slopes of the SCM (H:V)?
2:1
6
Does the SCM have retaining walls, gabiion walls or other
engineered side slopes?
No
7
Are the inlets, outlets, and receiving stream protected from erosion
(10-year storm)?
Yes
8
Is there an overflow or bypass for inflow volume in excess of the
design volume?
Yes
9
What is the method for dewatering the SCM for maintenance?
Pump (preferred)
10
If applicable, will the SCM be leaned out after construction?
Yes
11
Does the maintenance access comply with General MDC (8)?
Yes
12
Does the drainage easement comply with General MDC (9)?
Yes
13
If the SCM is on a single family lot, does (witl?) the plat comply with
General MDC (10)?
Yes
14
Is there an O&M Agreement that complies with General MDC (11)?
Yes
15
Is there an O&M Ian that complies with General MDC (12)?
Yes
161
Does the SCM follow the device specific MDC?
Yes
17
Was the SCM designed by an NC licensed professional?
Yes
-T POrin MnC FROM n2H _1053
18
Method used
SA1DA
19
Has a stage/storage table been provided in the calculations?
Yes
20
Elevation of the excavated main pool depth (bottom of sediment
removal) (fmsl)
2557.00
21
Elevation of the main pool bottom -(tap of sediment removal) (fmsl)
2557.50
22
Elevation of the bottom of the vegetated shelf (fmsl)
2561.00
23
Elevation of the permanent pool (fmsl)
2561.00
24
Elevation of the top of the vegetated shelf (fmsl)
2562.00
25
Elevation of the temporary pool (fmsl)
2562.50
26
Surface area of the main permanent pool (square feet)
5207:1
27
Volume of the main permanent pool (cubic feet)
16916 of
28
Average depth of the main pool (feet)
4.00 ft
29
Average depth equation used
Equation 2
30
If using equation 3, main pool perimeter (feet)
31
If using equation 3, width of submerged veg. shelf (feel)
32
Volume of the forebay (cubic feet)
6106 of
33
Is this 15-201/6 of the volume in the main pool?
Yes
34
_
C€ean-out depth for forebay (inches)
6 in
35
Design volume of SCM (cu ft)
16916 of
36
Is the outlet an orifice of a weir?
Orifice
37
If orifice, orifice diameter (inches)
3 in
38
tf weir, weir height (inches)
39
If weir, weir length (inches)
40
Drawdown time for the temporary pool (days)
2
41
Are the inlet(s) and outlet located in a manner that avoids short-
circuiting?
Yes
42
Are berms or baffles provided to improve the flow path?
No
43
Depth of forebay at entrance (inches)
42 in
44
Depth of forebay at exit (inches)
36 in
45
Does water flow out of the forebay in a non -erosive manner?
Yes
46
Width of the vegetated shelf (feet)
6 ft
47
Slope of vegetated shelf (H:V)
6:1
48
Does the orifice drawdown from below the top surface of the
permanent pool?
No
49
Does the pond minimize impacts to the receiving channel from the 1-
yr, 24-hr storm?
Yes
50
Are fountains proposed? (If Y, please provide documentation that
MDC(9) is met.)
No
51
Is a trash rack or other device provided to protect the outlet system?
Yes
52
Are the dam and embankment planted in non -clumping turf grass?
Yes
53
Species of lurfthat will be used on the dam and embankment
Turf Type Fescue
54
Has a planting plan been provided or the vegetated shelf?
Yes
DITIONAL INFORMATION
55
Please use this space to provide any additional information about
the wet pond(s):