BLD20151252_Ronquillo_ENG4.pdf
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
PermitApplication:Date:
#BLD20151252& BLD20151536 (pool)July 13, 2016
th
Project Name/Address:
Ronquillo –810–9Ave S
Contact Person/Address, Fax or E-mail:
Scott Schriber –scott@ronscotthomes.com
Reviewer: JENNIFERLAMBERTDivision:
ENGINEERING
During review of the subject submittal, it was found that the following information, corrections, or
clarifications would need to be addressed. All Handouts referred to in these comments can be accessed at
our website: www.edmondswa.govunder City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
st
1Review –12/17/15
nd
2Review –5/20/16
rd
3Review –6/23/16
th
4Review –7/13/16
BLD20151536 -Pool
1)
OK
New Comment –5/20/16
2)Plans are not consistent with the Site Plan and Civils (i.e. there is a stairs and planters shown to
the west of the pool patio). Please revise such that all plans sheets are consistent.
BLD20151252 -SFR
SITE PLAN
3)As changes are made to other plan sheets, please revise this sheet as needed.
4)OK
5)OK
DATE E-MAILED7/13/2016PAGE (1)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
6)OK
7)OK
8)OK
GENERAL COMMENTS FOR THE CIVIL PLAN SHEET
1)As changes are made to other plan sheets, please revise this sheet as needed.
2)OK
3)OK
4)OK
5)OK
6)OK
COVER AND EXISTING SITE CONDITIONS(C1 OF 5)
1)OK
2)OK
3)OK
SITE DEVELOPMENT AND SWPPP PLAN (C2 OF 5)
4)OK
5)OK
6)OK
7)OK
8)OK
DATE E-MAILED7/13/2016PAGE (2)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
9)OK
10)OK
11)OK
12)OK
13)OK
New Comment –5/20/16
14)OK
15)OK
STORM DRAINAGE PLAN AND DETAILS (C3 OF 5)
STORM
1)OK
2)OK
3)OK
4)OK
5)OK
6)OK
New Comment –5/20/16
7)OK
8)OK
9)OK
DATE E-MAILED7/13/2016PAGE (3)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
10)OK
11)OK
12)OK
Comments by the City Stormwater Engineer Program Manager, Jerry Shuster, PE
Drainage Report for Ronscott Construction Inc.,May 2015.LSA
1)OK
7/13/16 –Comment from Herrera:The following information still needs to be clarified by the
applicant in the Drainage Report regarding the pump system design:
The pumps appear to be sized appropriately to meet the 2-, 10-, and 100-year flowrates.
Pleaseconfirm that the forcemain is appropriately sized for the combined flow from both
pumps, and that the friction losses do not reduce the pumping rate below 0.0419cfs.
The Drainage Report and the drawings indicate that an hour meter shall be installed for
each pump so that they may alternate in operation. The pumps have different performance
points, and pump #2 exceeds the allowable flowrate for the 2-year storm. Please indicate
how the hour meter will work with the Pump Sequence to meet the flow control
requirements.
6/23/16
–Comment from Herrera: The following information still needs to be clarified by the applicant
in the Drainage Report regarding the pump system design:
The proposed pump system appears to meet the max allowed flowrate from the 2-year storm, but
it appears that the dual pumps may not keep up with the additional head caused by friction losses
when both pumps are in operation.In addition, it appears that the max flowrate from both pumps
operating together will not keep up with the flowrate from the 100-year storm, potentially
causing overflow. Please address how flowrates from the 10-and 100-year storm events will be
conveyed.
Is there a backup power supply for the pump, per requirement #6 in the “Use of Pumping
Systems for Conveyance of Stormwater on Private Property”, ENGR-DEV(STM)-2011-02?
DATE E-MAILED7/13/2016PAGE (4)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
Please show the backup power supply and add a note that the pump system is hardwiredto the
backup power supply.
5/20/16 -
Comment from Herrera: The following information still needs to be clarified by the applicant
in the Drainage Report regarding the pump system design:
It appears that the system curve crosses the pump curve at ~12.5gpm (0.0279cfs), which exceeds
the allowable 2-year storm flowrate (0.0168cfs). Please explain how the pump discharge flowrate
will be limited to 7.5gpm.
Provide an explanation on how pumps will alternate in operation, per requirement #6 in the “Use
of Pumping Systems for Conveyance of Stormwater on Private Property”, ENGR-DEV(STM)-
2011-02.
Is there a backup power supply for the pump, per requirement #6 in the “Use of Pumping
Systems for Conveyance of Stormwater on Private Property”, ENGR-DEV(STM)-2011-02?
Is there an overflow path for stormwater (if the pump were to fail) per requirement #7 in the “Use
of Pumping Systems for Conveyance of Stormwater on Private Property”, ENGR-DEV(STM)-
2011-02 that does not result in:
Flooding of a building or emergency access
o
Erosion or downstream sedimentation
o
Slope failure
o
12/17/15
-Comment from Jerry Shuster:The pump system must comply with all the requirements in the
City of Edmonds Stormwater Pumping policy:
http://www.edmondswa.gov/images/COE/Government/Departments/Public_Works/Policies/ENGR-
DEVSTM-2001-02.Pumping.Private_Property.pdf.The requirements in this document includes, but is
not limed to, gravity flow of all runoff to the City’s storm system, with an internal alarm for pump
and/or power, and a backup power source to operate 1 pump.
2)
OK
DETENTION VAULT AND PUMP SYSTEM DETAILS(C4 OF 5) –NEW SHEET
DATE E-MAILED7/13/2016PAGE (5)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
1)7/13/16 -Depending on groundwater table at the location of the pump chamber, separate
buoyancycalcs may be required. Contractor to coordinate with Engineer of Record and City for
installation requirements.
6/23/16–Comment was partially addressed. There needs to be an antiflotation device for the pump
chamber. Please revise the plans accordingly.
5/20/16 Comment -Please revise the pump system details to be consistent with the City’s stormwater
pump policy and Standard detail E6.7 (Sewer grinder pump). For example, show antiflotation devices,
rails, vent, etc. Make sure that the design shows that the system can be maintained (for example the
standard detail E6.7 shows that the entire lid can be removed for maintenancewhere a manhole lid does
not allow for this).
2)OK
3)OK
4)OK
5)OK
6)OK
7)OK
8)OK
WATER AND SANITARY SEWER PLAN AND DETAILS (C5 OF 5)
WATER
OK
1)
2)OK
3)OK
SEWER
1)OK
DATE E-MAILED7/13/2016PAGE (6)
City of EdmondsBLD20151252
TH
121 5AVENUE NORTHEDMONDS, WA 98020 • (425) 771-0220 FAX (425) 771-0221
Website: www.edmondswa.gov
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
2)OK
3)OK
4)OK
5)OK
6)OK
DRY UTILITIES–Show on sheets C3 & C5
1)OK
Please resubmit 3 copies ofthe revised plansand associated documents with a written response to each
item to a Permit Coordinator. Please contact me at 425-771-0220ext 1321or by e-mail at
jennifer.lambert@edmondswa.govif you have specific questions regarding these plan corrections.
DATE E-MAILED7/13/2016PAGE (7)