SW3190806_BMP Record Drawings Courtyards at Emerald Lake_9/11/2019

1• HfI
34 --�
643.70
RTM=643iT"
)D-3 PDD-
-E
--- _- 33 --------- -----
MILS MILS V s MS _ 1"US _ Y!. __.__T-MI1S _ _,• MI1S-
vp-15"Stm RIM=642.11 --a � .18"5tm- -
Ff�
PqD-3 PDD-3Fi
PDD-3 �a �PDD-3
RIM 641.31 \
PDD 3
1
I
fill
I
Lot 7 05
FFE= 645.82
Lot 5 0�0
FFE=o645.32 ot 1
FFE=644.91 Lot 4 Lot 3 Lot 2 FFEL 642.65
FFE=645.09 FFE=644.60 FFE=642.97
I
1 644.82 1 644.41 644.59 1 64.4.10 1 643.09 642.15
1 1 1 1 I
I 1
r
l :,, .-
1 --
�..
643.52 _ ...
12
- 26 642.851
W W on Place . �,SAX__
va sirl _ IM=cw� /
drop A , W -ram
R� -. PVMT 843.82 / RIM=f+
r. {--�--�° HP 640
e- 643 27
5DE / _
- _ --_ - �Ra \
(c\j,
/ FES3
prep•: BMP
INV=
� Aj , r'
` �,
28
FES8
y /
Rill=� ,"stm�
0.70% �r1 _ r�-_----- --- - IS
SIN 9"
27
RIM- 3r� I
-_- - - ----- --- -- ----- - - ? i 640.90 /
VIP
_ _ ~ :ui / / ,', �O� •e? k o� `4t3` / /°�''/ N 35.00
+I'�Gi�gpt
1NV.- NORMAk/WATE / FES7 \ '�c9
° LEV
\' FES 1
30Radius BOC,'
BMP
363�3)�63
d'
1 Class
38 �� �� ��� �o FES9
46�� 30' Radius BOC
�!_ ,��.•' / /ce INV 63 4
/ HW 1 INV=625.$8
Prop. 10' Emergent � 63�13iv3- / /
Spillway 0 639.5E;^
639.10
PFep- 10'x3O' Level Spreade
(See Detail Sheet C5.6A)go
EO
Wet Pond Volume
Basin Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
634.50
19,267
0
635.00
23,340
10 652
636.00
25,936
24,368
637.00
28,646
27,291
638.00
31,469
30,058
639.00
34,391
32,930
640.00
37,447 1
35,919
Volume of Basin = 161,487 ft3
BMP 1&2
Wet Pond Volume - ASBUILT
Basin Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
634.50
23,258
0
635.00
25,467
12 181
636.00
28,426
26,947
637.00
31,044
29,735
638.00
33,745
32,395
639.00
36,635
35,190
639.75
38,899
28,325
Volume of Basin = 164,773 ft3
LEGEND
ELLi- 10' Littoral Shelf
Scientific Name
Common Name
Quantity
North
Quantity
(South)
Zone
Alisma subcordatum
Water plantain
70
35
Shallow pool
Asclepias incarnato
Swamp milkweed
115
55
Shallow land
Carex tenero
Quill sedge
125
65
Shallow land
Eupatoriadelphus fistulosus
Joe Pye Weed
70
35
Shallow land
Hibiscus coccineus
Scarlet rose mallow
70
35
Shallow land
Lobelia siphilitica
Great blue Lobelia
85
45
Shallow land
Nelumbo lutea
American lotus
55
30
Deep pool
Nuphar lutea adveno
Yellow pond lily
55
30
Deep pool
Peltandra virginica
Arrow arum
70
35
Shallow pool
Pontederia cordato
Pickerelweed
85
45
Shallow pool
Sagittaria latifolia
Arrowhead
55
30
Shallow pool
Sagittaria lancifolia
Bulltongue
55
30
Shallow pool
Schoenoplectus tabermontani
Soft stem bulrush
45
25
Shallow pool
Sparganium americanum
American burreed
55
30
Shallow pool
Co
(4) 24"x9" Wind
6» Elev=
63
4- - Diameter Pipe
Normal Pool
Elev=634.5
634.50
38
639.21
►\IUM
ncrete Slab Top
ow
7.5 637-
7.51
Flow
63,
630.09
639.3
'S
Structure to be Filled with Flowable Fill
Flowable Controlled Density Fill
After Installation of 15" Diameter
RCP Storm Sewer P• 628.09
640.
640.0
640.0
635.0
635.0
Northern BMP
10:
MAX.
634.5 635.0
- Permanent Pool-634.5
1
634.
�c Foreboy
10: I MAX.
> :10 MAX. 640.0 640.0
50YR= 638.46 638.25
25YR=-638.2-3- 638.04
10YR= 6�T 637.77
2YR= 636.2,8 636.13
1 YR CPV= �fJ8 637.44
WQ= c�;T 635.74
15" STM
fr30 35
630.09
Pi
Drop Inlet 629.9
PERMANENT OUTLET STRUCTURE
Cap w/2.00"
Hole Cut
Inv=��34.50
634.50
.50
Inv
634
635.0
640.0
Road
24" RCP
w/Water N
Tight Joints
627.91
Southern BMP
634.5
r?
629.0
626.0 626.0
SHWT = UNKNOWN (SEE NOTE THIS SHEET ABOUT CLAY LINER.)
STORMWATER BASIN SECTION A -A
Scale: None
634.5
0 Permanent Pool-6-_, -
f'rep:Perm anent
Structure see detail
this sheet
1p;1 MAX•
634.0
N
635.0
Prop. Inv. -658.35-
SHWT =UNKNOWN (SEE NOTE THIS SHEET ABOUT CLAY LINER.) 630.09
STORMWATER BASIN SECTION B-B
10: 1 MAX.
Inflow
Scale: None
628.0
634.5
Permanent Pool=63S
628.0
N!
640.00
MAX
�
10:1
635.0
.0
LProp, 15"RCP
w/Water Tight Joints
Install 3 Anti -Seep Collars Evenly
Spaced Along Prop. 30"RCP
w/Water Tight Joints
10.1 MAX'
635.0
34.0
Ex.Grade
SHWT = UNKNOWN (SEE NOTE THIS SHEET ABOUT CLAY LINER.)
STORMWATER BASIN SECTION C-C
Scale: None
BMP MAINTENANCE SCHEDULE
1. After every significant runoff producing rainfall event and at least monthly.
a) Inspect the wet detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b) Check and clear the orifice of any obstructions such that the drawdown of the
temporary pool occurs within 2 to 5 days as designed.
2. Repair eroded areas immediately. Re -seed the embankment as necessary to maintain
good vegetative cover. Mow vegetative cover on embankment to maintain a maximum
height of six inches, remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swoles, riprop, etc.)
quarterly to maintain proper functioning.
4. Remove woody vegetation not part of the approved plan along the dam embankment.
5. Remove invasive and dead vegetation on the littoral shelf and replant as necessary.
6. Remove accumulated sediment from the wet detention basin system semiannually or
when the depth is reduced to 75% of the original design depth. removed sediment shall
be disposed of in an appropriate manner and shall be handled in a manner that will not
adversely impact water quality (i.e. stockpiling near a wet detention basin or stream,
etc.).
7. Perform annual inspection of the pond (annual inspection reports to be kept by the
owner). Prior to inspection notification must be given to Storm Water Services.
RECORD DRAWING NOTE:
THIS DRAWING HAS BEEN MODIFIED TO REFLECT CHANGES
MADE DURING CONSTRUCTION OF THE PROJECT. PROVIDED
INFORMATION IS BASED ON INFORMATION OBTAINED FROM
THE CONTRACTOR AND SURVEYOR, AND/OR OBSERVATION
BY THE ENGINEER'S AUTHORIZED REPRESENTATIVES.
Note: Contractor to consult a geotechnical
engineer to determine if a clay liner is
required. Infiltration rate shall not exceed 0.01
IN/HR. If basin permanent pool is within 6" of
SHWT no liner is required.
Fill embankments shall be formed of suitable material placed in
successive layers not to exceed more than six (6) inches in
depth for the full width of the cross-section, including the
width of the slope area. No stumps, trees, brush, rubbish or
other unsuitable materials or substances shall be placed in the
embankment. Each successive six (6) inch layer shall be
thoroughly compacted by the sheepsfoot tamping roller, 10-ton
power roller, pneumatic -tired roller, or other methods approved
by the Town/County Engineer. Embankments over and around
all pipe culverts shall be of select material, placed and
thoroughly tamped and compacted as directed by the
Town/County Engineer or his representative.
Pond embankments shall be installed in this some manner and
shall be compacted to meet a density of 95% Standard Proctor
Test.
DATA RIOrK
Permanent
Temporary
Water
Top of
Pool
Pool
Quality
Weir
Elevation
Elevation
Orifice Size
(Emergency)
STORMWATER
2.00
BASIN
fi34� 5�
�0.6313.5
GRAPHIC SCALE
0 t5 30 60
1 inch = 30 feet
634.50 637.51 634.50 639.10
Q
1�
W �
�
Z y
•--
c 0
M
Ili
N
00
F S
Innv.0ut
A
U
630.0 W
C
N
C
e-w
�i
z
E" A
x�
O
W
z
�O
W
Vj �A
�/►�
V1
�O
O
O
f; y�pppQ
cc CV
cr Z n
yV_m
c t2 -°a ri
oCa�
v rb E
a: C 0 0
v
T T v co E
�o2 fu
3�ro
��m�
U D n
Z)
vi U
arn�a
W mot
DATE
September 25, 2018
SCALE
1" = 40'
JOB NO.
151NlIff!!!/
CARQZ '�.,,
� f��i
`�,� / %�'
2014-1128
����� +EVANS• /�'��
'.MECHWART.
- SEAL _
HAMBLETON &
' TILTON, INC.
0 55 S -
iC[
SHEET
RECORD DRAWING

3 �
1.43
I
W
} I
0
S2 0
548.4.3 1
Lot 56 "�> I
FFE=647.93
Lot 57
FFE=647.40
PDD-3
PDD--3
Lot 58
FFE=646.40
PDD-3
Lot 59
FFE=646.31
PDD-3
=3 rrr � � �� sT�l�-•-�
Nor
5' Rea
Setback
(Typ)
11 of
1 �
rn
I
FIFE
PDD-
lUl
638.92 @ 3
29 Inv=� -
A1 CZ 1 fi
645.74 FES4 Prop. Swale = 637,130- at - m
^Y A Normal Pool 637.47
RIM=�
-
iIN
4
V
it 51
-648.43 I 5' Side
CA Setback a '
(TYp) '
�` 4 Class "B° RipRop 1
(5,609 CF)
rp -Pr07. B M P
3 .5'Wide
Trail
a� Q PVC Pipe See
A
3 (See detail tthj6 sfieef),/r Detail
Sheet
• Bottom ♦~lev. /
I / ; 633.4 C9.2)
A 50
=648.93 a ■ ■
0_.co
D37
4, ■
rk
ro
, I t
ARA
Lot 49 `a9 / - -
FFE=649.43 0 -- -- ♦ / .
CL
645
636.32.
10' Emergency
- - FES6 Weir /
Crest--- 14-.�
642.71 /
BMP3
Wet Pond Volume Wet Pond Volume As -Built
Basin Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
639.00
1931
0
640.00
13090
6683
641.00
16673
14845
642.00
18459
17558
643.00
20474
19458
643.50
21134
10402
Volume of Basin = 68,946 ft3
Forebay Volume
Foreboy Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
634.00
467
0
635.00
792
622
636.00
1,194
986
637.00
1,666
1423
638.00
2,205
1929
Volume of Forebay = 4,960 ft3
v
0
N
Basin Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
639.00
8773
0
640.00
11439
10106.00
641.00
13400
12419.50
642.00
18522
15961.00
643.00
23054
20788.00
643.50
25369
12105.75
Volume of Basin = 71,380.25 ft3
ForebCly Volume As -Built
Forebay Storage Volumes
Elevation
Area (ft2)
Volume (ft3)
634.00
927
0
635.00
1200
1063.50
636.00
1500
1350.00
637.00
1862
1681.00
638.00
2213
2037.50
Volume of Forebay = 6,132.00 ft3
643.8
639.8
' ° .' MAX.
639.28
Permanent Pool-639.
Forebay
633.40
__ 633..8
633.40
638.8
1a:1 MAX.
643.8
M
639.8
SHWT = UNKNOWN (SEE NOTE THIS SHEET ABOUT CLAY LINER.)
STORMWATER BASIN SECTION A -A
Scale: None
Prop.Permanent
Structure see detail
10:1 MAX. this sheet
V TJ.V
�7
642.70
Rim=
Concrete Slab Top
24"x9" Window
EIev=640.35
640.39
4" Diameter Pipe PVC kL Cap w/1.00"
Normal Pool639.28 6339..639.28Elev=�3 -
2' Minimum -� shelf
;71\1638.8
Flow
Reduce
Ifrom 8"
PVC to
4" PVC
8" Diameter Pipe PVC 636.6C
Structure to be Filled with Fiowable Fill
Flowable Controlled Density Fill
After Installation of 24" Diameter
RCP Storm Sewer Pi e
643.8 643.8
10;1 y
50:1 MAX,CLMAX 639.28 10:1 MAY
641.8 83g 8 Permanent Pool-659.3 44
638. �, 638.3 639.8
ss 638.8 Prop.FES
4 Inv.Out=636r.5B
636,32
�.
633.40
SHWT = UNKNOWN (SEE NOTE THIS SHEET ABOUT CLAY LINER.)
STORMWATER BASIN SECTION B-B
50YR= 641.44
641.61
25YR= 641.22
641.37
10YR= 64E).97
641.08
2YR= 640.48
640.53
1 YR CPV= -64E).45
640.50
4" STM
fr30
636.60
P
Drop Inlet 634.70
PERMANENT OUTLET STRUCTURE
Hole Cut
Inv = 639.z39
639.28
Inv
Scale: None
Prop.lnv.=63{r7$ �- Prop. 15"RCP
636.60 w/Water Tight Joints
Install 3 Anti -Seep Collars Evenly
Spaced Along Prop. 30"RCP
w/Water Tight Joints
BMP MAINTENANCE SCHEDULE
1. After every significant runoff producing rainfall event and at least monthly:
(3) Inspect the wet detention basin system for sediment accumulation, erosion, trash
accumulation, vegetated cover, and general condition.
b) Check and clear the orifice of any obstructions such that the drawdown of the
temporary pool occurs within 2 to 5 days as designed.
2. Repair eroded areas immediately. Re --seed the embankment as necessary to maintain
good vegetative cover. Mow vegetative cover on embankment to maintain a maximum
height of six inches, remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.)
quarterly to maintain proper functioning.
4. Remove woody vegetation not part of the approved plan along the dam embankment.
5. Remove invasive and dead vegetation on the littoral shelf and replant as necessary.
6. Remove accumulated sediment from the wet detention basin system semiannually or
when the depth is reduced to 75% of the original design depth. removed sediment shall
be disposed of in an appropriate manner and shall be handled in a manner that will not
adversely impact water duality (i.e. stockpiling near ❑ wet detention basin or stream,
etc.).
7. Perform annual inspection of the pond (annual inspection reports to be kept by the
owner). Prior to inspection notification must be given to Storm Water Services.
REQQRD DRAWING NOTE:
THIS DRAWING HAS BEEN MODIFIED TO REFLECT CHANGES
MADE DURING CONSTRUCTION OF THE PROJECT. PROVIDED
INFORMATION IS BASED ON INFORMATION OBTAINED FROM
THE CONTRACTOR AND SURVEYOR, AND/OR OBSERVATION
BY THE ENGINEER'S AUTHORIZED REPRESENTATIVES.
Note: Contractor to consult a geotechnical
engineer to determine if a clay liner is
required. Infiltration rate shall not exceed 0.01
IN/HR. If basin permanent pool is within 6" of
SHWT no liner is required.
Fill embankments shall be formed of suitable material placed in
successive layers not to exceed more than six (6) inches in
depth for the full width of the cross-section, including the
width of the slope area. No stumps, trees, brush, rubbish or
other unsuitable materials or substances shall be placed in the
embankment. Each successive six (6) inch layer shall be
thoroughly compacted by the sheepsfoot tamping roller, 10-ton
power roller, pneumatic -tired roller, or other methods approved
by the Town/County Engineer. Embankments over and around
all pipe culverts shall be of select material, placed and
thoroughly tamped and compacted as directed by the
Town/County Engineer or his representative.
Pond embankments shall be installed in this some manner and
shall be compacted to meet a density of 95% Standard Proctor
Test.
DATA BLOCK
Permanent
Temporary
Water
Top of
Pool
Pool
Quality
Weir
Elevation
Elevation
Orifice Size
(Emergency)
STORMWATER
cam`
1.00
BASIN
�''�
-643-•�
639.28 640.39 639.28 642.71
O
"~
N
C)
W
p
N
Z
C,
xA
zo
W
I
0
o
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0
Q
A'
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o
zA
g-
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14, G�
a
aW
w
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F
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V
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N
DATE
September 25, 2018
SCALE
1" = 40'
�}tisiiia JOB NO.
,� r
���tirurr►rrr .�` �
14, % 2014-1128
GRAPHIC SCALE
0 15 30 60'�2�'.. EVANS•• '/y9=� _ SEAL
MECHWART - 45 -
HAMBLEiON 8c SHEET
TILTON, INC.
No. F-1016 '
1 inch = 30 feet % ' " H� `���.!�OS��`�\�� C5.7
OF ,.A•'',``��,� �''��rrrrrirtJ1w 1
'rfrrririr��� ()�Y
RECORD DRAWING