bld20130523_Mathew_ENG2.pdf
City of EdmondsBLD20130523
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
PermitApplication:Date:
#BLD20130523 August 23, 2013
Project Name/Address:
Mathews –636 Dayton St
Contact Person/Address, Fax or E-mail:
Randall Munson –randy.munson@comcast.net
Reviewer: JENNIFERLAMBERTDivision:
ENGINEERING
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.edmondswa.govunder City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
st
1Review –6/28/13
nd
2Review –8/23/13
SITEPLAN
1)As changes are made to the civil drawings, please revise the SitePlan to be consistent.
DRAINAGE AND UTILITY PLAN
GENERAL
1)OK
2)8/23/13 –Comment was addressed; however, can you please add to note #20 “All Disturbed soil
areas shall be seeded or stabilized and be compost amended…”
6/28/13 Comment: Please add a general notes section (example provided).
3)8/23/13 –Comment was addressed; however can you please remove #1 from the construction
sequence. A preconstruction meeting with the Engineering Department is not required.
6/28/13 Comment: Please add a construction sequence section (example provided).
4)OK
TESC
1)OK
2)OK
DATE E-MAILED8/23/2013PAGE (1)
City of EdmondsBLD20130523
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
3)OK
SEWER
8/23/13 –Comment was partially addressed. Please show the cleanout located at the property line
1)
where the cleanout is within the right of way.
6/28/13 Comment: Please show the proposed sewer linefrom the main to the house.
a.If you intend to re-use the existing sewer later, please add the following note:
“If re-using the existing sewer lateral the condition must be verified by City’s Public Works
Dept. Contact Edmonds Sewer Division 425-771-0235”. Please also note that the lateral must be
6” to re-use.
b.Please show all invert elevations at the cleanouts and at the connection to the main,
c.Please show the 6” cleanout (with 12” cast iron lamphole cover and ½” hexbolts) at the property
line.
d.Please show a cleanout within 2’ of the house.
e.Please note whatpipe materialwill be usedfor the sewer.
WATER
1)8/23/13 –Comment was partially addressed; however,pleaseshow the water meter to be located
within the right of way at the property line. Please add a note “The City to relocate the water
meter to the property line”.
6/28/13 Comment: Please show theproposedwater service line from the house to the meter.
2)OK
3)OK
STORM
1)8/23/13 –Comment was added; however the chart needs to be shown on the drainage plan. Please
relocate the chart to the drainage plan.
6/28/13 Comment: Please add the impervious surface chart as shown below.
DATE E-MAILED8/23/2013PAGE (2)
City of EdmondsBLD20130523
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
a.Please make sure that all impervious surfaces (both driveways, patios, roof line, etc.) are
included in the new regulated impervious surfaces calculations. The grasscrete driveway is
considered imperviousbut mitigatedby installing a permeable driveway instead of an
impervious driveway.I’ve attached the city policy for permeable pavements.
LineTypeArea (square feet)
1.Non-Regulated
ExemptRegulated
2.Replaced
3.New (Post 1977)+
Total Regulated Impervious Area
4.=
Mitigation required if in excess of 2000sf
5.Total Area Mitigated by Existing Stormwater Management System(s)-
=
6.Regulated Area Not Yet Mitigated
=
7.Area Proposed to be Mitigated by Low Impact Development Techniques
=
8.Area Proposed to be Mitigated through Conventional SWM Techniques
2)All impervious areas shall be collected and discharged to the stormwater management system.
a.Please show how the stormwater runoff form the south driveway will be collected and
discharged to the stormwater management system.
b.Please show how the stormwater runoff from the patio will be collected and discharged to the
stormwater management system.
3)OK
4)OK
5)OK
6)OK
7)OK
8)8/23/13 –Comment was addressed. The modeling does not use the “Puget Sound 36” precipitation
file per the Edmonds Stormwater Code Supplement, but it does not change the infiltration sizing
so no action is needed.
DATE E-MAILED8/23/2013PAGE (3)
City of EdmondsBLD20130523
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
6/28/13 Comment: The depth of the infiltration system used in the Hydrology Model differs from the
infiltration detail. Please revisethe plans/report to be consistent.
9)OK
10)8/23/13 –When scaling the drawing, it appears that the impervious surface is approx. 3725 sqft.
not 3472 sq ft. Please check and revise the plans accordingly.
6/28/13 Comment: Please note that the City has not verified the size ofthe system since the impervious
surface calculations were not submitted. The City will review once the calculations have been
submitted.
11)OK
12)OK
Additional Comments8/23/13
13)The report should break out the amount of impervious area that discharges to eachdrywell and
infiltration trench.
a.Please revise the report accordingly.
b.Please show the breakdown on the plans.
14)Please show an observation well on the infiltration trench.
15)The yard drain at the upstream end of the infiltration system should be a type once CB for solids
control and have an open grate to collect the driveway runoff.
a.Please have the downspouts connect to the CB.
b.Please revise the plans accordingly.
16)Please show the overflow path (direction arrow, landscaping features, etc.) for the infiltration
trench.
DRY UTILITIES
1)8/23/13 –Comment was not addressed. Please show all proposed dry utilities.
6/28/13 Comment: Please show the location of the dry utilities (power, gas, phone, etc.) so that
separation can be verified.
DATE E-MAILED8/23/2013PAGE (4)
City of EdmondsBLD20130523
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
2)OK
Frontage Improvements/Driveway
1)OK
2)OK
Please resubmit 3 copies of the revised plansand associated documents with a written response to each
item to a Permit Coordinator. Please contact me at 425-771-0220ext 1321or by e-mail at
jennifer.lambert@edmondswa.govif you have specific questions regarding these plan corrections.
DATE E-MAILED8/23/2013PAGE (5)