pln20120046-Niebrugge-civil_review-E2.pdfof E11410
CITY OF EDMONDS
CIVIL PLAN REVIEW COMMENTS
y
ENGINEERING DIVISION
�Sr 1g90 (425) 771-0220
City Website: www.edmondswa.gov
DATE: June 24, 2013
TO: Bret Niebruegge — bretniebs(kgmail.com
Jesse Jarrell — jessejgwesternengineers.com
FROM: Jeanie McConnell, Engineering Program Manager
RE: Subdivision File 4: p1n20120046
Project: Bret Niebruegge
Project Address: 22301 95' PI 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 an Engineering Technician.
City of Edmonds handouts and standard details can be referenced on the City website under Permit
Assistance.
Review 1 — June 24, 2013
Review 2 — August 27, 2013
GENERAL
August 27, 2013 — Thank you for providing a cost estimate. Please revise as follows:
a. Add filter socks
b. Estimate shows 50 sy of concrete for the sidewalk. If sidewalk is to be concrete it shall
be 5 1/2" thick. If asphalt will be used (to match existing to the south) then ACP should
be reflected in the estimate. Please revise accordingly.
c. Asphalt treated base has been included in the estimate, but it is unclear where this will be
placed. ATB is not shown in the road cross sections. Please revise accordingly.
d. All storm pipe material shall be included in the estimate
e. 8-feet of 48" concrete pipe has been specified, but it is unclear where this will be used.
Please clarify.
f. Add riprap pad.
g. 16-feet of 12" DIP has been specified, but it is unclear where this will be used. Please
clarify.
6/24/2013 comment - Please provide an itemized engineers cost estimate, including units and
unit prices, for both on -site and off -site (right-of-way) improvements, including all utilities,
traffic control, NGPA fencing and restoration/enhancement plantings. Please use the King
County Site Improvement Bond Quantity Worksheet and utilize the "write-in" sections where
appropriate.
• A bond is required to be placed for all erosion control measures, right-of-way and
stormwater management improvements. Posting a bond for stormwater systems applies to
subdivisions that involve 7,000 square feet or more of land disturbing activity and as well as
on projects in a critical area or buffer including ESLHA. The amount of the bond will be
based on 120% of the City approved estimate. The City will inform you of the appropriate
bond amount after review of the cost estimate. Please obtain the appropriate subdivision
improvement bond forms from the City.
• If you intend to post a bond in order to record the subdivision, the bond amount will be
based on the entire scope of the project.
• Inspection fees for this project will be calculated at 2.2% of the 120% City approved
estimate for all improvements.
2. ok
3. ok
4. ok
STORMWATER
August 27, 2013 — comments from Jerry Shuster:
1. The infiltration trenches for the shared driveway are sized using City handout E711, Table
5. Note that Table 1 and the footnotes on that Table 5 of E72B indicate that the sizing is
NOT for 100% infiltration but are to meet the Edmonds flow control standard. There is a
statement on page 15 of the drainage report, under Minimum Requirement #7, "Due to
the site proposing less than 5,000 sf. of new impervious area, flow control is not
required." This is not correct since the trenches are providing flow control, not 100%
infiltration.
o Since the trenches are not providing 100% infiltration, an overflow path must be
specified (see Table 3 in E7213) and the conveyance to the City system must be sized
to handle the overflow.
o Trenches can be designed using 100% infiltration by modeling them inWWHM3,
WWHM4 or WWHM2012.
6/24/2013 comments -
1. Please revise plans consistent with our meeting discussions on May 28, 2013 regarding the
stormwater management design.
2. Impervious Areas chart: Please include impervious surface chart found in City handout E72.
Provide a breakdown for existing impervious surface area on the site as well as what is proposed
with the subject development.
PLANNING DIVISION
1. ok
2. ok
3. ok
4. ok
5. August 27, 2013 — The City will add a redline note will be added to Sheet U1 to address
this comment in its entirety.
Page 2 of 3
6/24/2013 comment - Either remove the setback lines indicated on Sheets 2 and U1, or
correct the setbacks shown on both lots to reflect those stated in Section ILA.4 of the
preliminary approval staff report and add the following statement: "Setbacks shown are for
reference only and vest no right."
Sheet 1 of 3 — TESC AND GRADING
1. ok
2. ok
3. ok
4. Revise the General Notes section as follows:
#7—ok
ADD — 6/24/2013 comment - revise sequence to specifically note how to handle footing drains.
August 27, 2013 comment — plans now state footing drains are to daylight to surface.
Footing drains should not daylight and instead should run to a drywell on the property. I
can redline this note on the plans if you'd like.
419 — ok
Sheet 2 of 3 — ROAD AND DRAINAGE PLAN
1. ok
2. ok
3. ok
4. ok
5. ok
6. ok
7. ok
8. ok
9. ok
10. ok
11. August 27, 2013 — Sheet numbers changed with the last submittal, so the reference should
be to Sheet 4. I can redline this note on the plans if you'd like.
6/24/2013 comment - Revise infiltration trench note to also reference construction detail found
on Sheet 3.
12. ok
13. ok
14. ok
15. ok
Sheet 3 of 3 — DETAILS
1. ok
Please contact me at 425-771-0220 or by e-mail at ieanie.mcconnell(dedmondswa.Eov if you
have specific questions regarding these plan corrections.
Page 3 of 3