pln20120046-Niebrugge-civil_review-E3.pdfof E°_o CITY OF EDMONDS
�~ CIVIL PLAN REVIEW COMMENTS
ENGINEERING DIVISION
�Sr 1g90 (425) 771-0220
City Website: www.edmondswa.gov
DATE: October 4, 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
Review 3 —
October 4, 2013
GENERAL
October 4, 2013 — Thank you for updating the cost estimate. Please update the cost estimate
as needed with any further changes to the civil construction plans.
August 27, 2013 — Thank you for providing a cost estimate. Please revise as follows ... (see
original comment sheet for list of requested changes)
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. A
3. A
4. A
5. October 4, 2013 — The clearing limits have been extended onto the property to the north and
the plans indicate a 10 foot temporary construction easement, but a recording number has
not been provided. Please provide a recording number so I can redline the plans with this
information or update the plans accordingly.
STORMWATER
October 4, 2013 — The recent submittal, dated September 6, 2013, no longer includes a storm
infiltration system and instead proposes a stormwater detention system. Please review the City
storm utility map below. The storm system in 95`h PI W, in which the subject development
proposes to connect to, does not appear to be connected to a hard piped system continuously to
220 St SW. Please confirm the stormwater analysis addresses how the flows from the subject
development will affect the storm system in 95`h PI W.
August 27, 2013 — comments from Jerry Shuster:
1. The infiltration trenches for the shared driveway are sized using City handout E713, 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.
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o Since the trenches are not providing 100% infiltration, an overflow path must be specified (see
Table 3 in E72B) 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.
Please contact me at 425-771-0220 or by e-mail at if you
have specific questions regarding these plan corrections.
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