BLD20090043-White-3 - Eng-Storm.doc
City of Edmonds
TH
121 5 AVENUE NORTH • EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
DEVELOPMENT SERVICES DEPARTMENT
Planning • Building • Engineering
Plan Review Corrections
Plan Check : Date:
# 2009-0043 March 12, 2010
Project Name/Address:
White 17808 Talbot Rd Addition/Remodel
Contact Person/Address/Fax:
Henry Byam FAX: 425-776-1917 henryb@wescoautopaint.com
Reviewer: JoAnne ZulaufDivision:Engineering
rd
3 REVIEW
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at
our website: www.ci.edmonds.wa.us under City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
1.1/26/10 SEE STORM WATER ENGINEER COMMENTS BELOW.
2/2/09 Comment: Infiltration proposal being reviewed by the Storm Water Engineer. Comments
to follow.
3/10/10 See storm comments below.
2. 3/8/10 Done
3. 1/26/10 Done.
4. 3/8/10 Done
5. 1/26/10 Done.
6. 3/8/10 Done
7. 1/26/10 Done
8. 3/8/10 Done
9. 3/8/10 Done
10. 1/26/10 Done.
11. 1/26/10 Done.
12. 3/8/10 Done
13. 1/26/10 Done.
14. 3/8/10 NEW Please add “TBR” (to be removed) to all areas of driveway and any thing else that will be
removed as part of the proposed construction.
15. 3/8/10 NEW Add the City of Edmonds Standard Detail E1.3 for Sediment Control for Catch Basins
and Standard Detail E1.1.1 for Straw Bale Dam Filtration Systems used at NW corner of property.
16. 3/8/10 NEW Add note to plans showing what area of access will be used for a temporary construction
entrance. If not a currently paved area, please add Standard Detail E1.2 for temporary construction
entrance requirements.
DATE FAXED/E-MAILED 7/3/2017 Page 1 of 2
RD
3/10/10 DRAINAGE: STORM WATER ENGINEER 3 REVIEW COMMENTS:
1. The E72 Handout for Storm Water Drainage includes prescriptive calculations for
detention systems to accommodate runoff of 5000sf of impervious or less.
a. The sizing Table I can only be used for the increments of impervious surface runoff
listed. For example: If the impervious surface to be detained is 3500 or under, Table I can
be used following the dimensions shown for 3500sf. If the impervious surface to be
detained is over 3500 then must go to the next system sizing measurement which in this
case would be 4000sf and system would be designed using the dimensions shown in that
row of the table.
b. The plans and drainage report indicate that the detention system will be sized for
3750sf. Please revise worksheet and plans to reflect accurate detention system sizing for
square footage to be detained.
c. The submitted drainage report states 3092sf will be detained, the plans state that 3750sf
will be detained, the detention detail and worksheet are sized for 3500sf of detention and
the response letter states that 3775sf will be detained. Please revise all to reflect a single
specific square footage amount that will be detained.
2. The submitted plans note three roof drains (and footing drains?) that will be connecting to
the spreader trench located at the northwest corner of the property. The remaining
impervious surface appears to all be directed to the detention system. This includes the
following existing and proposed impervious surface:
a. Garage w/Addition 3074.09sf + eaves
b. Garage Workshop 2900.39sf + eaves
c. Driveway 1322.00sf
d. Concrete Sidewalk 560.00sf
This adds up to 7854.48sf+ eaves of impervious surface going through the detention
system that is sized for 3750sf of runoff.
Please use arrows along the footing, roof drains, and driveway/sidewalk drains to clearly
show the direction of flow from each area of impervious surface. If detention is intended
to be used for all of the 7854.48sf of impervious surface, please submit a new plans for a
detention system sized for this amount of runoff. Please note that any detention system
designed to detain runoff for over 5000sf of impervious surface must be designed and
stamped by a licensed engineer.
3. Please add City of Edmonds Standard Detail E5.1.1 (Can be found in E72 Drainage
Handout) for observation well for spreader trench to plans. Show location of observation
well on plans.
4. Please add City of Edmonds Standard Detail E5.3 for Catch Basin Type II requirements.
Reference this detail on the detention detail on plans.
Please resubmit 3 copies of the revised plans/documents to a Development Services Coordinator. Please contact me at 425-771-
0220 if you have specific questions regarding these plan corrections.
DATE FAXED/E-MAILED 7/3/2017 Page 2 of 2