SFR ASBUILT-7706 223RD ST SW-BLD20171127.pdf4
Per ECDC 18.30 BMP T5.13,
compost amended soi
ls, shall be
required for all disturbed
Pervious surfaces.
5 4o
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S-RATE c
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T E 1&R
STORM DRAINAGE DESIGN.
DRIVEWAY
N / ---------- AREA:
kM F
/810-RETENTION PLANTER
LOCATION
ROOF AREA WITH GUTTER,
L-------- -----------------
of
ROOF AREA: 2,417 SF
1310-RETENTION PLANTER
AREA CALCULATION:
2"/hr: 2,417 SF x 2.2%= 53 SF
=> 13.25'x4" MIN, PLANTER BASE
m 366,
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Planting Requirements: Rain garden
Ashall include no less than 12 plants select
from the plant list below, generally spaced
at 2' centers. Applicant may propose
alternative planting plan for City Approval.
0 2' a' 6' e' 10' 20' 30' 40' Plant List: INVERT @ 369.70
N Sawbeak sedge, spike rush, slender
5.5' WIDE SPACER (TYP.) 18'-1�2" rush, western mannagrass, wool grass, „
2X6 P.T. BORDERS, TOP
FLUSH TO TOP OF DRIWAY small -fruited bulrush, or bur reed 12 PONDING DEPTH -
EASEMENT LINE 368.52 368.7.1 368.9 » » >
1% PROP, LINE (TYP.) `► a - Y2 0x 12 HOT DIP SPIKES ALTERNAT G
4" APART @ 48 O.C. TYP.
SEWER CLEAN 368.4
OUT & LINE: �� �'� 13'-3%" �P RI AY_
SDR-35 - 4" W ; /,� BIORETENTION fc Grade swale or berm as needed OVERFLOW PIPE 2"�
i� �� i to ensure overflow from pervious
I Ii r Ti RSTORMWATER� �, MIN. @ 369.45 INLET
2
gasketed fittings �' ' 'LANTER & TIGHT driveway will not negatively
4 impact adjacent structure.
/ ♦ LINE: r. rnL
'�.0'4" PvC Storm 6X8 P.T. LUMBERFLOyA)water line fromEXISTING GRADE %" OFFSET2X6 P.T. ENTRENCE roof to downspout
BORDERS OVERFLOyySPILL OVER AREA: 3' WIDE
368.0 , � OUTLETS °• . • . y.»FCLEAN OUT (TYP.) SPILL OVER AREA: 3' Wi 4' ,•3 0F 1-2 WASHEDRIVER R0CK
3• DEEP OF 1-2• METER BASE
■DOWN SPOUT (TYP.) WASHED RIVER ROCK � CARPORT
°. \ ■ '
! Power line placed in 3� n
4'-1 11
18" MIN. OF
BIO-RETENTION
SOIL BY
CEDAR GROVE
COMPOSTING
2" MULCH
- 369.53 @
-TOP J OF WALL
9-- % 369.45
368.45
ENZ 368.29
WATER METER & a 0 STORM yyATER FROM 2X6 P.T. BORDERS, TOP T schedule 40 grey 2.5if PLASTIC LINER -
■ROOF DOWNSPOUTS FLUSH TO TOP OF PAVERS ! : �
LINE C� ■ (TIGHTLINED) -. .__ Y•' r.. SLOPE
Water line is 1" 4,_0„ sue. P PAR r4e:- 'pipe
ti^ i• 1 rr� rr� ..: LAND G P °.. ..�- •r•..:r.. «..r.. I I I ' "
4.
PEX piping
n
p p g ,: r II
r -
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z z�
:'3 b
E EL
f�
<:
• r=. :a
V
EWER S PAV
ER R ■ PERVIOUS VE ALK RVI _
r
JO I
NTS
AY T I S OPTIONAL //` '1W' AN NAL
�S A- � �D
N
CLEAN T OU
II
■
A 4• TH
ICK BARK
■ I�
_-
-A'
r�
��NATIVESO L r.ON HOUSE BLDG PRIM TR SURFACE. 365.8-F1 AT
{0ULDREPLACETHISO SON LA SURFACE OVERHANG LINE
CORNER OF
-' a
;XDOWNSPOUTS
.
o F DOV NSP OUTS ...
H ME4fPVCST RM WATERFROM 5
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AT •�:�`
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FI
CRAWL _
367.94N. -
III
� FLOOR, SPACE � I, TO TILL NATIVE SOIL,
I TOP F GLACIAL J
ACCESS-� 0 GL CAL TILL II 6 MIN. BELOW AMENDED SOIL.
I 1 FOOTING DRAIN IS NOT
4 REQUIRED, IT IS AN WINTER GROUND
366 8'-6" I OPTION. 59�„ ,,- _ 7'-0" WATER LEVEL BOTTOM OF WALL @ 365.86
I SETBAC _� 3673q SETBACK DRIVE �"Ox24" REBAR INTO SOLID
10
FOOTIIGDRDRAIN FOR��- CIO- RE TE TIO PLANTER GROUND @ 48" O.C. THROUGH 1st
__--JL- ____-------1, _ 3 SCALE: 1" = 1'-0" COURSE OF 4x8.
5'-0" -
DRYWELL-
_� NOT LL
INSTALLED _ - _
I366.04 366.04 366.04
365.5 /
363.1
SITE PLAN AND S TOR DRAI PL
SCALE: 1" = 10'-0"
/ LLI�IIIIIII I I I I � I
0 2' 4' 6' 8' 10' 20' 30' 40
I
0
I I
Y 40'
DESIGN APPROACH:
PER CHECKLIST 10, ROW 77 & 79, WE ARE ALLOWED TO USE 6"/Hr AS INFILTRATION
RATE FOR DESIGN SIZING OF THE BIO-RETENTION PLANTER.
IN TABLE 5 ABOVE, IT ONLY LISTED 2"/Hr WITH A 2.2% RATIO FOR CATHEGORY 1 SITE.
WHICH WOULD RESULT TO BE THREE (3) TIMES OVERSIZED.
TO ELIMINATE THE OVERFLOW DISCHAGE THAT IS DESIGNED TO ADDRESS THE 100
YEAR STORM OR EVEN 500 YEAR STORM WE PROPOSE TO BUILD A BIO-RETENTION
D PLANTER USING THE 3 TIMES OVERSIZED AS WEO HAVEROOM
OM T0 DO SO AND BEING
ON A CONCERVATIVE SIDE.
OUR TOTAL IMPERVIOUS AREA IS 2.417 SF. PER TABLE 5, WE HAVE THE FOLLOWING
FORMULA: 2.417x2.2% = 53 SF OF RETENTION PLANTER BASE. wE ARE PROPOSING A
13.25'x4' PLANTER BASE WITH (2) 2" DIAMETER OVERFLOW PIPES.
THE OVERFLOW MAY NOT BE HAPPENING AS THE PLANTER IS 3 TIMES OVERSIZED. IN
CASE IT HAPPENS, THE WATER FLOWS OVER THE 3' WIDE SPILL OVER AREA ALONG THE
TWO SIDES OF THE PLANTER (SEE ATTACHED DRAWING).
EXISTING FENCE
(CURRENT)
PROP. LINE
EXISTING GRADE
FILL WITH
NATIVE SOIL
TOP SOIL
366.04 366.34"
2'-3%"
4
18'-6%4"
2
- S SITE CROSS SE C T10
SCALE: 1" = 10'-0"
TOP SOIL
2X6 P.T. BORDERS, TOP
FLUSH TO TOP OF PAVERS
2'x2'x2" PAVERS ,
0
BIO-RETENTION
PLANTER(BEYOND) I/A ELV.368.71
@ CURB EDGE
22'-71/2"
1.5" SPACER BETWEEN PAVERS,
PERPENDICULA TO FOOT TRAFFIC
6" MIN. BASE COURSE OF1.5" OF 1 " MINUS CRUSH ROCK
1.5"-2" WASHED CRUSH ROCK 2" OF LEVELING CONSTRUCT'N SAND
SANDY LOOM NATIVE SOIL LANDSCAPING FABRIC WITH 12" OVERLAP
AT JOINTS
COMPLIES WITH tiPPLICABI.E
5WALK*AY PERVIOUS PAVER DETAILS CITY S ORMN ATER CODE
SCALE: 1" = 1'-0"
Date: y s /fir
w-Il /a,
/- ROOF DOWNSPOUT
�- TOP OF DRAIN LINE @ 370.70
RIM OF DRAIN LINE SHALL BE
12$9 MIN. ABOVE THE INVERT.
@ 369.70
5
STO
PERMANENT PONDING
LEVEL IN DRAIN LINE.
REMOVABLE CAP
///'FOR MAINTENANCE
1-011
12" PONDING
LEVEL @ 369.45
4" PVC STORM
WATER FROM
ROOF
DOWNSPOUTS
(TIGHTLINED)
RAIN LANE DETAIL
5.5" SPACING ALL DIRECTIONS
6" MIN. BASE COURSE OF
3.5" OF 1.5"-2"
AND BORDERS (TYP.)
1.5"-2"
WASHED CRUSH
ROCK
WASHED CRUSH ROCK
6" MIN. THICK REINFORCED
LANDSCAPING FABRIC WITH
1.5" OF 1 " MINUS
CONCRETE DRIVEWAY PAD
12" OVERLAP AT
JOINTS
CRUSH ROCK
ELV. 368.71 @
BROOM FINISHED SURFACE
CURB EDGE (� OF
SLOPED INWARD AT 2%
5 5„
ELEA
367.67
DRIVEWAY)
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52
CARPORT
DRIVEWAY
EXIST'G CURB
Y 110 REBARSJ I 2" OF LEVELING
CRISSCROSSING @ 16" O.C. CONSTRUCT'N SAND
4 CARPORT & PERVIOUS DRI AY DETAILS APPGO D r ENGINEE
SCALE: 1" = 1'-0" e./I
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ITTLE:
PROJECT ADDRESS:
7706 223RD ST SW
EDMONDS WA 98026
PROJECT OWNER
MR & MRS EAM
770
6 223RD ST W
S
EDM ONDS WA 98026
425-891-6832
s- i
RESUE
MAR 2 9 20':
BUILDING DEPARTN
CITY OF EDMON[.