18-102155CITY OF
Federal Allay
Centered on Opportunity
August 15, 2018
Contour Engineering
Kyle Mauren, P.E.
PO Box 949
Gig Harbor, WA 98335
CITY HALL
33325 8th Avenue South
Federal Way, WA 98003-6325
(253) 835-7000
www. cityoffederalway.. com
Jim Ferrell, Mayor
RE: Permit #18-102155-00-EN; WOODMONT STORAGE (tka DAFFODIL), 27824 Pacific Hwy S,
Federal Way
Dear Mr. Mauren:
The City of Federal Way Public Works Department has reviewed the plans provided on July 17, 2018. The
following comments apply:
1. Please resolve the size of the second orifice, which is shown on sheets C-10 and C-12 as 1.5", and in the
TIR as I".
2. On sheet C-12, control structure detail, the restrictor plate orifice elevation cannot be 331.5 and maintain
the minimum 2' distance from the outlet pipe, which has an invert of 331.5. Please correct.
3. Provide the bond information worksheet and bond quantities worksheet previously requested.
4. Update City standard General and Drainage notes to current.
5. Since one side is over six feet tall, have the geotechnical engineer review and approve the pond
embankments.
6. The discharge from the detention pond must not create downstream erosion. The flow dispersion
trenches shown in figure 4.2.2.B or 4.2.2.0 in the 2016 King County Surface Water Design Manual
assure more even distribution than the proposed gravel trench and must be used.
7. Provide method used to size the dispersion trench as an energy dissipator.
Please provide one set of revised plans for review along with a response letter and required worksheets. If you
have any questions, please contact me at 253-835-2732.
Sincerely,
Ann Dower
Senior Engineering Plans Reviewer
cc: Woodmont Storage LLC, 601 Valley Avenue NE, Puyallup, WA 98372
Cole Elliott, P.E.; Development Services Manager
Leila Willoughby -Oakes, Associate Planner
Project File/AD
Day File
`,\CFwF1LE1\Applications\CSDC\PROD\docs\save\151662 78143_09153211.DOC
CITY OF
Federal Way
C-entered on Opportunity
June 28, 2018
Contour Engineering
Brett Allen, P.E.
PO BOX 949
Gig Harbor, WA 98335
RE: Permit #18-102155-00-EN
Woodmont Storage (tka Daffodil); 27824 Pacific Hwy S, Federal Way
Dear Mr. Allen:
CITY HALL
33325 8th Avenue South
Federal Way, WA 98003-6325
(253) 835-7000
www. cityoffederalway.. com
Jim Ferrell, Mayor
The Public Works Department has reviewed the Woodmont Storage first submittal for an engineering
permit. Please make the following revisions:
General:
1. Provide the City's inspection phone number, 253-835-2700, on sheet 1.
2. Include the permit number, above, in the signature block.
3. Provide at least one sheet showing all boundary survey information that has been stamped by a
professional land surveyor licensed in the State of Washington
4. Provide the City's standard General and Drainage notes.
5. Show solid waste containment.
6. Provide the city's standard commercial driveway detail #3-6A.
7. Provide a detailed grading plan to verify that the existing driveway cut meets ADA standards.
Erosion Control (Sheets 2 and 3)
8. Identify the stream and setback.
9. Show the location of the sediment pond riser and check the elevation shown on sheet 2 — it
appears to be too high.
Detention Pond Plan Sheet 10
10. Include invert and orifice information on the plan`
11. Reference the control structure detail on sheet 12.
Notes and Details Sheet 12
12. Provide invert and orifice details on the control structure detail.
13. Control structure must be at least 54" diameter.
Technical Information Report '
i
14. Explain how n trench was sized. It seems like a longer trench would be more
beneficial to a wetland bu ffer.
15. Show the flowpath for the dispersion trench. If the adjacent property is going to be part of the
flowpath, an easement must be provided.
Documents
Please complete and return the enclosed bond information worksheet and bond quantities as soon as
possible. Email return is acceptable. These worksheets will be used to create both the bond and the
agreement covenant regarding leachable heavy metals.
Please provide one set of revised plans and one TIR for further review. If you have any questions, please
contact me at 253-835-2732 or at ann.dowerCg7cityoffederalway.com.
Sincerely,
Ann Dower
Senior Engineering Plans Reviewer
AD:mt
enc. Bond Quantities Worksheet
Bond Information Worksheet
cc: Cole Elliott P.E., Development Services Manager
Leila Willoughby -Oakes, Assistant Planner
pf/ad
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18-102155-00-EN
\\CFW FILE 1\Applications\CSDC\PROD\docslsave\ 151662_77958_27144953,DOC
MEMORANDUM
CITY OF
Federal Way
DATE: 6/ 12/ 18
TO: Leila Willoughby -Oakes
Chris Cahan
Erik Preston
FROM: Ann Dower
Public Works Department
SUBJECT: WOODMONT STORAGE (fka DAFFODIL) - (18-102155-00-EN)
27824 PACIFIC HWY S
The first submittal for Woodmont Storage is attached. Please route comments to me at your earliest
convenience.
Thank you
Ann
CC) ) CA)
P-(c,
C-1 b C4 s - Xd4
Ito, o, � rcl,
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P.O. Box 949, Gig Harbor, WA 98335
4706 97" St. NW, Suite 100
Gig Harbor, WA 98332
Phone:253-857-5454
47: E iN G I N E E R I N G- L L C Fax: 253-509-0044
CIVIL ENGINEERING 0 SURVEYING 0 LAN9" Email: infoCc7tontourgllc.com
November e, 2018 Nov 13 2818
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City of Federal Way Uk�Yp�4L yyRY
33325 8 Ave South LO yT
Federal Way, WA 98003
Re: Permit #18-102155-00-EN
Woodmont Storage (aka Daffodil); 27824 Pacific Hwy S, Federal Way
Dear Ann,
j We have revised the Civil Plans and TIR based on your letter received August 15, 2018. We have
also addressed comments received from Leila Willoughby -Oakes received on August 271', 2018.
The following are our responses to the comments in the same order as the letter.
1. Please resolve the size of the second orifice, which is shown on sheets C-10 and C-12 as
1.5", and in the TIR as 1".
The size of the orifice 2 was corrected to be 1" in the design sheets.
2. On sheets C-12, control structure detail, the restrictor plate orifice elevation cannot be
331.5 and maintain the minimum 2' distance from the outlet pipe, which has an invert of
331.5. Please correct.
The detail has been modified to specify the orifice size for the restrictive plate. The
erroneous IE has been removed.
3. Provide the bond information worksheet and bond quantities worksheet previously
requested.
The bond quantities worksheet has been included with this submittal.
4. Update City standard General and Drainage notes to current.
The City's standard General and Drainage notes are now provided on sheet C14.
5. Since one side is over six feet tall, have the geotechnical engineer review and approve the
pond embankments.
The geotechnical engineer is currently reviewing the embankment. Their approval will
be provided prior to final permit approval.
6. The discharge from the detention pond must not create downstream erosion. The flow
dispersion trenches shown in figure 4.2.2.B or 4.2.2.0 in the King County Surface Water
Design Manual assure even more distribution than the proposed gravel trench and must be
used.
The 100 year peak flow from the existing site conditions is 0.23 cfs and will be
reduced to 0.19 cfs under developed conditions. While the existing site condition
peak flow exceeds the 0.2 cfs threshold for use of a rock splash pad, the developed
100-year peak flow does not We have revised the plans to include the notch board
as requested and given the developed peak flowrate being less than the threshold
limit, we have proposed the minimum length dispersion trench of 10-ft The
dispersion trench detail can be found on Sheet C12.
7. Provide method used to size the dispersion trench as an energy dissipator.
See discussion for #6 above.
Planning Comments
Woodmont Storage Building 1 & 2 - 8/27/2018
Sheet C1
1. Submit specs + safe city camera (UPI II condition) location. Allow for 2.5 to 3 months
process for IT to order schedule King County sheets and install.
(/I L'*&0 L4EAT�
2. Please note xp icit ins uuctionns�to p r City Development Services + planning divisions
Noted.
3. Applicant shall remove gravel/pebbles from BSBL (detention pond). The following are only
permitted in the BSBL per FWRC 19.145.160
1. Fencing
2. Eaves, overhangs
3. Landscaping
The overflow spillway has been shortened to keep it out of the BSBL (all sheets.)
4. (Type "F") label stream type across all drawings label the ordinary high water mark across
all drawings. Note when applicant biologist delineated it.
The Type `F° Stream OHWM is now called out on all sheets, as well as the date of the
biologist identified it (May 2017).
i Sheet C2
5. Provide notes on safe city camera locations
Note provided on sheet C4.
0 f
PLANNRA
6. Compose of varied materials cannot be paint striping on asphalt
Crosswalk and ADA parking stalls are now proposed as concrete.
7. Existing off site?
Yes, these are existing offsite features.
8. Note on plans explicitly no work to occur on property to the north.
This is now explicitly stated on Sheet C2.
9. Remove from BSBL
1.
2.
3.
Landscaping
Fencing no greater than 6 ft.
Eaves overhangs permitted
The overflow spillway has been shortened to keep it out of the BSBL (all sheets.)
Sheet C5
10. FWRC 19.115.090(f) if proposing and new chain link all shall be plastic coated in dark
colors, with decorative pole caps if not screened by Type I landscaping (applies to all chain
link fences visible from public rights of ways or adjacent properties)
A Chain Link Fence Note has been added to Sheet C15, next to the chain link fence
details, detailing these requirements.
11. Remove from BSBL
The overflow spillway has been shortened to keep it out of the BSBL (all sheets.)
12. Type F
The Type 'F' Stream OHWM is now called out on all sheets, as well as the date of the
biologist identified it (May 2017).
13. Where is the OHWM flagged by Soundview in 2017 please label stream Type (F) ordinary
highwater mark or top of bank across all sheets.
The Type 'F' Stream OHWM is now called out on all sheets, as well as the date of the
biologist identified it (May 2017).
Sheet C9
14. Clearing limits should not be in BSBL
In order to install landscaping the clearing limits must extend to the wetland buffer
line in order to install silt fencing downslope from all disturbed areas.
Sheet C7
15. Provide note on type or is this existing?
The existing fence will be removed, and the new fence will be a chain link fence. Site
plan sheets C4 and C5 now specify the fence type.
16. Remove
The overflow spillway has been shortened to keep it out of the BSBL (all sheets.)
17. OHWM?
The Type T". Stream OHWM is now called out on all sheets, as well as the date of the
biologist identified it (May 2017).
Please give me a call if you have any questions or need any additional information.
I
Sincerely,
/Oyv/ie M. Mauren, P.E. Brett M. Allen, P.E.
Design Engineer Principal Engineer