bld20130919-Meadowview Estates-E1.pdf
CITY OF EDMONDS
CIVIL PLAN REVIEW COMMENTS
ENGINEERING DIVISION
(425) 771-0220
City Website: www.edmondswa.gov
DATE:
October 18, 2013
TO:
Kent Halvorson
kent@halvorsonconstructiongroup.com
FROM:
Jeanie McConnell, Engineering Program Manager
RE:
Building Permit#: bld20130919
Project: Meadowview Estates –Grading, Driveway & Utilities
nd
Project Address:15620 72Ave W
During review of the above noted application, it was found that the following information,
corrections, or clarifications are needed. Please redline plans or submit three (3) sets of revised
plans/documents with a written response to each of the items below to a Permit Coordinator.
City of Edmonds handouts and standard details can be referenced on the City website under Permit
Assistance.
GENERAL
1.Please revise plans to include downstream easement areas that benefit the subject property.
2.Please add a note to plans stating “A separate right-of-way construction permit is required for all
work within the city right-of-way. A ROW permit application with contractor’s signature shall
be provided to the city.
3.Please provide a written response from the geotech that the civil plans are consistent with the
geotech report. In addition, please respond to the following:
a.The geotech report discusses the on-site drainage system that was installed after the slide
of 1997. The plans show theseimprovements as existing, but it is not clear whether the
stormwater improvements will remain in place with the development of this site. Please
clarify and if the system is proposed to be removed, please ask the geotech to comment
on this.
b.Will the storm conveyance system located within the 50-foot slope buffer need to be
relocated outside this buffer area?
STORMWATERREPORT
1.The stormwater report shall reflect the entire phased site development. For this reason, the
project is considered a Large Site Development. Please revise the report as needed to reflect
this.
2.The report states 2400sf impervious surface area for each of the 4 proposed residences and
25,000sf for associated driveways, but the proposed driveways are not shown on the plans to
confirm that these areas were included in the calculation.
a.Please revise plans within the stormwater report and provide a breakdown for the access
road and each single family residence (showing house and drivewayseparate).
b.The surface water runoff form theexisting home shall also be collected and connected to
the storm water system and should therefore be included in the calculations.
3.The downstream quantative analysis is currently being reviewed by Jerry Shuster, Stormwater
Engineer. Any comments will follow these plan review comments.
Sheet 1 of 8 –CS-01-COVER SHEET
1.Revise note “Proposed BLA, TYP”to also state “under separate permit application”.
Sheet 2 of 8 –ER-01-TESC PLAN
1.Please revise sheet title to state TESC & demo plan.
2.Clearly indicateremoval of all driveway areas –paved and gravel.
3.Revise plan to include temporary measures to control sediment laden runoff during grading and
construction efforts –such as swale, check dams, etc.Proposal shall be consistent with methods
allowed by the geotech.
4.Tree protection measures shall be shown on this plan or added to sheet TR-01 and referenced on
this plan sheet.
5.If the existing stormwater system (interceptor) is to be removed, please note as such on this
plan.If not, please indicate protection of this system.
Sheet 4 of 8 –RD-01-GRADING, ROAD & UTILITY PLAN
1.A lot of information is provided on this plan sheet. It would be great to have a separate site
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development plan sheet that shows property lines, easement areas, and access to 72Ave W.
2.Impervious Surface Area Chart: Provide a breakdown fortheroad and each single family
residence (showing house and drivewayareas separate).
3.A subdivision application has not been submitted and therefore with this phase of the project the
stormwater stubs provided to the south of CB-1 and to the east of CB-3 shall be eliminated.
You might consider installing a catch basin on the east side of the access road turnaround area
so the storm conveyance pipe under the proposed paved surface can be installed. This would
allow for future connection to thisCB and conveyance pipe without or with minimal pavement
disruption.
4.Please confirm in the storm analysis that CB-3 will function sufficiently as the only catch basin
collecting runoff from the access drive and the 12” conveyance pipe with almost 90 degreebend
at CB-2 will maintain proper flow and not overflow at CB-2 during large storm events.
5.Any pipe sections exceeding 20% slope shall be anchored. Please revise plans to show required
anchoring and incorporate associated details.
6.Show easement areas through downstream properties and until the point at which the private
th
system connects with the City storm system on 75.
7.If theexisting stormwater system (interceptor) is to be removed, please note as such on this
plan.If not, please indicate protection of this system.
8.Show utilities from the existing home and how they will connect to the proposed utility stubs.
9.Indicate whether the existing home has an interior sewer ejector system or an exterior sewer
grinder pump. Will the existing system be replaced with this project?
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10.Indiate RIM and invert elevations at the proposed SSMH-1. Provide a cross-section of this
manhole as well to show connection of theforce line and gravity discharge.
nd
11.The existing SSMH in 72Ave W will need to be channeled to accept flows from the new
connection. Clearly show this on the plans and refer to City standard detail E6.1found on sheet
6.
12.Revise plans to show pavement restoration at the sewer connection and water service
connection.
13.Add cross section callout through access drive (showing direction of view) and refer to access
road and driveway cross sections found on sheet DT-01.As noted under DT-01 comments
below, a curb or thickened edge shall be required at the edge of the driveway to direct flows to
appropriate catch basins.
14.Revise water meter & service callout to state 1” water meter with 1” service. That is unless the
existing house does not need a 1” service, in which case standard detail E7.6 on sheet DT-02
should be revised to state ¾” service.In addition, note should be revised to reflect installation
of one meter only.
Sheet 6 of 8 –DT-01–NOTES AND DETAILS
1.Revise the General Notes to reference the current WSDOT standard specs.
2.Revise Driveway section details to include curb or asphalt thickened edge to control stormwater
runoff.
3.Please remove standard detail E5.1.1. Stormwater runoff cannot be directed back into the
ground at the subject site.
Sheet 7 of 8 –DT-02–NOTES AND DETAILS
1.Detail E6.9 is only partially applicable. Provide a detail that represents connection of the force
main into a sewer manhole.
Sheet 8 of 8 –TR-01–TREE PLAN
1.Tree protection measures shall be shown on this plan or added to sheet ER-01 and referenced on
this plan sheet.
Please contact me at 425-771-0220 or by e-mail at jeanie.mcconnell@edmondswa.govif you have
specific questions regarding these plan corrections.
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