20180727134017.pdfIEC
INSIGHT ENGIN¡ERING CO.
Re
July 16,2018
Jennifer Lambert
l2l 5th Ave NE
Edmonds, ïfA 98020
(42s) 17r-0220
Zimmerman Edmonds SFR - 8LD20180576
IECO No. 17-0858
Dear Jennifer,
The project referenced above is revised in response to the review comments dated June 5, 2018
The review comments are numbered on the letter and have been addressed in italics as follows:
Sheet Cl of 2 (Drainage and Utility Plan
1) The plans are unclear as to exactly what is new/replaced impervious and what is proposed
impervious surface areas. If the existing impervious areas are being removed to bare soils
(roof and foundation) and replaced with new impervious surfaces, this area will be
counted towards new/replaces impervious areas.
a. Please clearly show what is new/replaced (i.e. hatching, etc.).
b. Please clearly distinguish between new/replaced and 2nd story additions that do
not count as new/replaced impervious areas.
c. Please clearly show areas where new/replaced roof overhang is to be installed
over existing peruious area.
d. It is states that the driveway is to remain; however, the plans indicate that alarge
portion will be replaced with storm line improvements. The existing driveway
areas outside of the replaced area seem to be poor condition and unlikely to be
preserved. Any portion of the driveway outside of what is currently shown on the
plans to be replaced, will count as replaced impervious area. If this increases the
new/replaced impervious area to 2000sf or greater, a stonnwater management
system will be required.
P|ease see detail in lower left of sheet Cl
2) hnperuious Areas chart: Provide a breakdown for all the irnpervious surfaces. Stormwater
management trigger is 2000sf. If proposed project does not createlreplace 2000sf or more
PO Box 1478 o Everett, WA 98206 o Phone: (425)303-9363
Fax: (425)303-9362 o Email:info@insightengineering.net
RESI.JB
JUr_ 2 7 20ts
BUILDING ÞEPARTÀdENT
CTTY OF EDMONDS
impervious surface area then the following is not required. A simple accounting of the
proposed impervious surface area should be provided.
We have added a detention system to sheet Cl, as we are replacing the driveway and
going over 2,000 SF of new impervious.
3) The project is proposing to add foundation to the existing garage; however, it appears that
a portion of the existing garage andlor roof overhang is encroaching into the City right-
of-way. Encroachment into the right-of-way is not approved; therefore, please confirm
that no portion of the existing encroachment will be enclosed or expanded upon.
a. Please note that the City will not approve any repairs to the retaining walls,
fences, roof overhangs, and shed that is located within the City right-of-way.
'When those structures need to be replaced or as otherwise directed by the City,
they will need to be located on private property.
The.þundation is not added under the overhang area in the right-of-way
4) The City's GIS system shows that there are stormwater flows on the subject site. Please
show the stormwater on the plans if they exist.
See dashed linefrom Critical Areas overview
Sheet C of 2 (Grading and TESC Plan)
1) Show the stormwater stated above in#4 and any TESC needed to protect the stormwater
flows.
There is no surfaceflows on the site; therefore, no extra TESC is needed.
2) The plans show a construction entrance detail; however, it is unclear where the
construction entrance is to be located. Please show the location on the plans. If the
intention is to use the existing driveway as the construction entrance, remove the detail
and state as such on the plans.
The detail has been removed on the plan. The intent is to use the existing driveway
3) Please show the location of the silt fence and reference the City standard detail.
Silt fence is not being usedþr sediment control. I(e are using the existing vegetation to
prevent sediment transportation.
4) Revise the clearing limit to include the foundation being installed on the existing garage
The clearing limit has been modified.
PO Box 1478 r Everett, WA 98206 o Phone: (425) 303-9363
Fax: (425) 303-9362 o Email:info@insightengineering.net
Please feel free to contact me with any questions or comments you may have.
Sincerely,
ß* %(
Br{anKalab, P.E.
PO Box 1478 r Everett, WA 98206 r Phone: (425) 303-9363
Fax: (425)303-9362 r Email:info@insightengineering.net