bld20120858_Olson-2.doc
City of Edmonds
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121 5 AVENUE NORTH • EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORKS DEPARTMENT
Engineering Division
Plan Review Corrections
Plan Check : Date:
# BLD20120858 June 7, 2012
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Project Name/Address:
Olson SFR 15500 75 Pl SW
Contact Person/Address/Fax:
James Thomas jthomas@arch-design.net
Reviewer: JoAnne ZulaufDivision:Engineering
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. All Handouts and Standard Details referred to in these
comments can be accessed at our website: www.edmondswa.gov by clicking Government / Public Works
(under Departments) / Permits and Development/ Engineering – General|Standards.
Please Note: Building Handouts do not include updated Engineering Division Requirements. Refer to
Engineering Handouts for all Engineering Requirements.
General Comments: 6/7/13: Done
Sheet SP1.0 Site Plan:
1. Impervious calculations under “Drainage Data” are incorrect. See comment under “Drainage
Plan”. Please remove from plan and add the correct Impervious Surface Calculation box to
plan.
2. Not sure what the hatch line is along the edge of the asphalt road refers to, please label.
3. Remove area of disturbance from this plan. Shown on grading plan.
4. Please revise plan to reflect changes made to civils.
5. Label all landscape walls.
Sheet C1/C2-Grading/TESC Plan: 6/7/13: Done
Sheet C4 Drainage Plan: 6/7/12 Done
New Drainage comment: A ten foot minimum distance between the manhole structure and the
footings shall be maintained. Please call out on plans.
Sewer Pump Report:
The Sewage Pump Report does not meet all the criteria required. Please review the Engineering
Handout E62 for more information.
DATE FAXED/E-MAILED 7/2/2017
The Sewer Pump review was performed by Mike DeLilla, Senior Utilities Engineer.
The following documents were reviewed: Sewerage Pump Station Predesign Report For George
Olson SFR originally dated April 27, 2011, revised March 28, 2013 and Civil Plans Submitted 4/5/13.
6/7/12 Pump Comments
General comment. Recommend that engineer talk with pump manufacturer so that they provide head loss
calculations and recommended pump. This will help ensure that the optimal pump is provided for the project.
1.Based on elevation data given in part E of report, the static head elevation calculation of 106 – 81.5 should be
24.5 ft not 28.5 ft please revise.
2.Please add pump off elevation in part E. Based on what I can tell it’s set at 81.6. Please verify and annotate
accordingly.
3.Headloss calculation in Part E for 25GPM should be interpolated to give more accurate value.
4.In part F, based on the attached tables in the appendix, fitting minor loss for 90 degree bronze ell is 5ft not 4ft.
Also, minor loss equation does not appear to be used properly. Based on tables in appendix, fitting calculation
for psi/100 feet is actually ft/100ft. Also data used is for PVC pipe instead of the bronze fittings that are called
out in the title. This will affect all calculations in part F. Also, please break down how the gate valve loss number
was calculated and how it will vary based on discharge rate. Currently only one value is shown. Finally, for the
pump station pipe loss, I don’t know where the 0.7’, 0.7’ and 0.11’ numbers for the 25/35/35gpm rates come
from.
5.Revise the values of pump operating curve in part G after comments above are addressed. Also, it appears that
Hf values are not included in calculation. Plus it appears that the system operating velocity was added to the
TDH equation. Since the equation is in feet, adding a value that has different units (ft/s value) is not allowed.
Please revise so that all units are the same.
6.In part I, the minimum required volume is 165 gallons. Wet well capacity is measured from pump on to alarm
level. Please verify pump on elevation. In part E it’s 83.1, in part I it’s 83.0. This value will also affect calculation
of Maximum cycle volume and storage volume. If it turns out that volume is not sufficient, it appears that alarm
level can be raised further so that it’s only 0.5’ from gravity pipe invert elevation.
Sheet3
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1.Please provide annotations to force main system as requested in 1 review comment’s, Utility Civil Plan
comment #11.
2.Based on plans it appears that force main will extend past the property line and that the gravity line will have a
curvilinear portion. The gravity pipe must be laid in a straight line without bends.
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3.Please included statement on this plan sheet in regard to 1 review comment’s, Utility Civl Plan comment #6.
4.Show hose bib location & panel location on this sheet and cross reference to their respective design/plan sheet.
Sheet5
5.Revise pump calc volume to reflect volume being calc’d from pump off elev to alarm level. Anything above
alarm does not count toward volume calc, since it’s there for emergency purposes.
DATE FAXED/E-MAILED 7/2/2017
Sheet C5 Utility Plan:
1. 6/7/13 Please move water meter to the southeast corner of the site. Private utilities can not
be approved that run parallel to the property line in the right of way. The water main has been
extended to a point adjacent to the southeast corner of the site to avoid this kind of situation.
Water service is not addressed on this plan. Show line from connection at meter to
connection at house. 10ft sep required from sewer line. Label meter as new or existing and
call out size. Call out water service line material, length and size.
2. 6/7/13 Done.
3. 6/7/13 Done.
DATE FAXED/E-MAILED 7/2/2017