20091028113031318.pdfit of Edmonds
121 5TI 'AVEN-UE NORTH - EDMONDS, WA 98020 - (425) 771-0220 FAX(425) 771-0221
Website: \N\vw.ci,ednionds.\wixs
PUBLIC WORKS DEPARTMENT
Engineering Division
Plan Cheek #: 2009-0570
Date: October 28, 2009
Project Name/Address: Tang 23311 76" Ave W sfir
Contact Person/Address/Fax: Andy & Connie Tang
Reviewer: JoAnne Zulauf Division:
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. Our handouts, can be found online at the City of
Edmonds web site wN%,Nvci.ednionds.wa.us under City Government/Development
Services/E ngineering Division.
ALL 10/28/09 COMMENTS ARE ADDED IN RED�.
W M -V
1.
10/28/09 ok.
2.
10/08/09 Done.
3.
10/08/09 Done
4.
10/08/09 Doiie
5.
10/28/091)o e,.
6.
10/28/091 one.
7.
10/28/09 Done
&
10/28/09 Done.
9.
10/28/09 Done,
10.
10/08/09 Done.
It.
10/08/09 Done
12. 10/08/09 Done
13. 10/08/09 Done
DATE MAILED/FAXED 10/28/2009 PAGE 1 OF —2
14. 10/28/09Plan now shows drainage system under driveway. The drainage worksheet has approxiii'lately
2 ft of cover Lit the infall CB, but will not inake that minimurricover of'211 under drivable Surface.
Options are to call Out use of N 12 pipe inaterial or lower system, to make coverage requirements, If you
choose to lower systern please provide adJustcd rin-Vinvert, elevations bear afl catch. basins. 10/08/09 If
you are choosing to use 18" pipe then the rnininuirri lenoth of detention pipe is 42'. Your plans show
approxiniately 35. Also Please note catch basin type For all new catch basins including in right of way.
Please use our detention worksheet and prescriptive sizes on back otNvorksheet to size the systerri,
accordingly. Also in the current plan the detention systems rim and invert do not allow for proper
burying of detention pipe. Please correct. Please provide on site plan location of proposed detention
system and show where it connects to the city storm system.
15. 10/08/09 Done
16. 10/08/09 Done
17. 10/28/09 Not Done. Please provide cast invert and south invert etevation for catch basin in gutter line, at
property and provide hiverf. elevation at connection to City system. 10/08/09 1�,Iot Done, Provide
proposed rine and invert elevations for the detention catch basins and at the point where it connects to the
city system.
18, 10/28/09 Your CUITC11t SUbMiSSiOn shows the intention to connect to the systein at Ific satellite catch
basin at 234th. Please show ori plan or add an additional plan showing the stretch of pipe between
property and location of City catel-i basin to be connected. Add nou, tfiat curb gutter to be replaced to
City standards. Show location of fire hydrant and any other, utilities this,,.,irea. Please indicate the invert
elevation at the City catch basin. 10/08/09 Please review attached copy of'City Storm system trial). It
shows, the nearest existing catch basin is located across the street south of the property ot'23 122, To
connect to the City system a catch basin shall be added in the gutter flow line on the east side of 76"',
then a 11.1irlirrIL1111 12" pipe is required to cross the street. Another catch basin shall be added directly
across the street in the west,gutter flow.fine. A minimum size of 12" pipe shall then connect that catch
basin to the City storm catch basin. Please note that a mininiun'i ofa Type I catch basin is required, and
ifrini to invert is greater than 5' then aType 11 catch basin is required. Connection to the city storm
main must be done at a catch basin. It appears as though the city storm system is located on the west
side of 76th Ave W. If connection can not be made at an existing catch basin then a new catch basin
shall be installed. In addition, if no catch basins exist on the cast side of 76"' Ave W then a catch basin
will need to be added in the gutter flow line.
19. 10/2,8/09 Done.
20. 10/28/09 Done.
New Comments 10/08/09
21. 10/28/09 Revise it'necessary, see #14. Complete drainage/detention worksheet with rim and invert
elevations. Revise all calculations needed to reflect revisions or changes to inipervious surface totAs,,
22. 10/28/09 Done.
1111111 1 1111 IN IRS
DATE MAILED/FAXED 10/28/2009 PAGE 2 OF —2