HomeMy WebLinkAboutSWP272833 3
BAIMA & HOLMBERG INC.
DRAINAGE REPORT
FOR
MILLER SHORT PLAT
Ij 2E
� w���S a
April 29, 1999 Fr �
EXPIRES f r sQ-ov
Baima& Holmberg, Inc.
Job No. 163 1-001
Prepared for:
George & Sylvia Miller
3901 Meadow Avenue N
Renton, WA 98056
100 FRONT STREET SOUTH ISSAQUAH • WASHINGTON • 98027-3817 (425) 392-0250 • (425) 391-3055
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PROJECT OVERVIEW
This project involves subdividing a 0.85acre parcel into 6 single-family residential
lots. The site is located along the west side of Meadow Avenue North in the NW
'Y4 of Section 32 of Township 24 North, Range 5 East. The existing conditions
consist of a single-family residence and lawn with underlying Indianola soils.
UPSTREAM TRIBUTARY AREA
Approximately, 0.50 acres of upstream area drains onto the site. The upstream
tributary area is comprised of lawns in single family-residential lots located south
of the site. There are no apparent drainage problems associated with these
upstream flows.
LEVEL 1 DRAINAGE ANALYSIS
On-site runoff flows northeast and northwest to a broad grasslined drainage
swale flowing from south to north through the site. From the north property line,
the swale conveys runoff approximately 350' through residential lawns and
discharges into a roadside ditch located along the south side of North 40TH Street
where it enters the City of Renton storm system. This ditch flows west
approximately 80' entering a 12" diameter inlet pipe. The runoff continues west
in a 12" storm line approximately 470' to a catch basin located along the east
side of Lake Washington Boulevard. Along this portion of the system, the runoff
drains into four catch basins. The runoff continues northeast in a 18" storm line
approximately 50' along Lake Washington Boulevard to a catch basin. Then, the
runoff is conveyed northwest approximately 65' crossing Lake Washington
Boulevard. From the catch basin, the runoff continues northwest in a 24" storm
line approximately 80'discharging into Lake Washington. There are no apparent
drainage problems along this downstream drainage path.
The proposed storm system consists of collecting the on-site runoff into a 36"
diameter water quality tank and conveying it into the City of Renton storm system
along Meadow Avenue North. This will reduce the offsite runoff to the adjacent
properties north of the site. Due to the small size of this project, it should not
cause adverse problems downstream.
The storm system along Meadow Avenue North is being constructed under City
of Renton Job No. SWP-27-2344. The new storm system runs north to North
40T" Street. Then, it runs west to Lake Washington Boulevard discharging into
the existing storm system.
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BAIMA & HOLMBERG, INC.
100 Front Street South SHEET NO. OF
ISSAQUAH, WASHINGTON 98027-3817 CALCULATED BY DATE y11�2-
(425) 392-0250 FAX (425) 391-3055
CHECKED BY DATE
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JOB
BAIMA & HOLMBERG, INC.
100 Front Street South SHEET NO. OF
ISSAQUAH, WASHINGTON 98027-3817 CALCULATED BY DATE
(425) 392-0250 FAX (425) 391-3055
CHECKED BY DATE
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Ar S C ONAD X rXONS
1631-001.hyd
----------------------------------------------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 2-YEAR 24-HOUR STORM **** 2.00" TOTAL PRECIP. *********
------------------------------------------------1---------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.8 68.0 .1 98.0 13.6
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
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PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
942
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r• 77 ----------- -------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 10-YEAR 24-HOUR STORM **** 2.90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.8 68.0 .1 98.0 13.6
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.9 .8 68.0 .1 98.0 13.6
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
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------ . �- Q--------- ------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 100-YEAR 24-HOUR STORM **** 3.90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.8 68.0 .1 98.0 13.6
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.9 .8 68.0 .1 98.0 13.6
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
.19 7.83 4064
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JOB
BAIMA & HOLMBERG, INC.
100 Front Street South SHEET NO. OF
ISSAQUAH, WASHINGTON 98027-3817 CALCULATED BY DATE
(425) 392-0250 FAX (425) 391-3055
CHECKED BY DATE
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L 4Ce46 .0J EAD COM01 TI VMS
1631-001.hyd
----------------------------------------------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 2-YEAR 24-HOUR STORM **** 2.00" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.3 68.0 .5 98.0 5.0
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.9 .3 68.0 .5 98.0 5.0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
`25 qh. 7.67 3467
----------------------------------------------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 10-YEAR 24-HOUR STORM **** 2.90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.3 68.0 .5 98.0 5.0
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.9 .3 68.0 .5 98.0 5.0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
--------39- ---------------p 7.67 5575
- -------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 100-YEAR 24-HOUR STORM **** 3.90" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV), TC FOR BASIN NO. 1
.3 68.0 .5 98.0 5.0
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.9 .3 68.0 .5 98.0 5.0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
.58 7.67 8103
lop
Page 1
JOB
BAIMA & HOLMBERG, INC.
100 Front Street South SHEET NO. OF
ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY l DATE
(425) 392-0250 FAX (425) 391-3055
CHECKED BY DATE
SCALE
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Pfl000CT 204-1(Single Sheets)205-1(Padded)
t4 EA Al UVAL SAPA
water_a.hyd
---------------------------------------------------------------------
******************** S.C.S. TYPE-lA DISTRIBUTION ********************
********* 2-YEAR 24-HOUR STORM **** .67" TOTAL PRECIP. *********
----------------------------------------------------------------------
ENTER: A(PERV) , CN(PERV) , A(IMPERV) , CN(IMPERV) , TC FOR BASIN NO. 1
.0 68.0 .4 98.0 5.0
DATA PRINT-OUT:
AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES)
A CN A CN
.4 .0 68.0 .4 98.0 5.0
PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT)
.05 7.67 655
Page 1
GO
A. �
Short Plat'(SHPL• cJf�• -� 7.
REQUEST FOR PROJECT# Prelim.Plat (PP#
CAG#a I
To: Technical Services Date -V-C4±±q Z a1 WO# C�j Creed•#' C (�3 ZZ
From: Plan Review/Project Manager �G2►t _Qj
Project Name
° (70 charactus cave)
Description of Project:
Circle Size of Waterlin 8" 10" 12" Circle One: New or xtension
Circle Size of Sewerline: 10" 12" Cucle One: ew or Extension
Circle Size of Stormline: 12" 15" 18" 24" (F'� ircle One: New or Extension
Addressor Street Names) A v
Dvlpr/Contractor/Owner/CnsIt:: f2
(70 charact rs max)
Check each discipline involved in Project Ltr Drwg #of sheets per discipline
bpd
Trans-Storm TJ
(Roadway/Draimgc) (Off site improvcmcntsXnclude basin namc) (includc TESC sheets)
❑ Transportation (Signaliza6on,Channclizadon•Lighting) ❑ ❑
12""'
Wastewater --
Sanitary Sewer Main(include basin name)
Water (Mains.Valves.Hydrants)
(Include composite Horizontal Ctrt Sheets)
❑ Suface. Water ❑ ❑
[mprovements (CLP ONLY)(includc basin name)
TS Use Only -T-e l]- q5� k-a '
3�,- 3 3 __