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October 15, 2018
City of Edmonds Development Services Department
121 5th Avenue North
Edmonds, WA 98020
RE: Select Homes SFR 19323 80th Ave W, Plan Check BLD20180909
I't Review Comment Response
RAM Job No. 18-014
Dear Staff:
This letter outlines the revisions and corrections made per planning and engineering review comment
letters dated August 10 and 23, 2018. Below is a list of the comment response documents addressing the
comments and requests:
Engineering Review: Jennifer Lambert, August 23, 2018:
GENERAL
1) Please add the building permit to the plans, BLD20180909.
Response: BLD20180909 number added to pion set.
2) Submit Sidc Sewer Permit Application form.
Response: Side sewer permit application will be mode by applicant.
3) A Stormwater Covenant is required to be recorded against the property based on the
proposed stormwater facilities for the project. Please complete the covenant, including
notarization and any required exhibits and submit to the city. Ensure the stormwater
covenant meets Snohomish County Record Drawing requirements. The document must be
complete, but will not be recorded prior to permit issuance. Prior to construction, final
location of facilities are to be verified (by field inspection and asbuilt) and then the covenant
will be recorded.
Response: See attached signed Stormwoter Covenant.
4) Show all private easement information within the plan sets. Note AFN's for existing
easements.
Response: AFN added to existing easements.
SHEET I OF 4 (SITE DEVELOPMENT PLAN)
NOTES
1) Remove note #2, since it does not apply to this project.
Response: Note #2 removed as requested.
SIDE SEWER NOTES
1) Remove, since it does not apply to this project (this would have been addressed during the
short plat).
Response: Side Sewer Notes removed as requested.
STORM DRAINAGE NOTES
1) Please remove the 2 d sentence unless this note becomes applicable as changes are made to
the plans.
Response: 2 nd sentence removed as requested
RESUB
OCT 15 2018
BUILDING DEPARTMEN-1
CITY OF EDMONDS
Select Homes SFR 19323 80th Ave W
Plan Check BLD20180909
1st Review Comment Response
RAMJob No. 18-014
Page 2 of4
WATER
1) The water service line that is bold, appears to be for and existing home located south of the
subject property. Please clearly label the water service line for the subject site as follows.
a. Clearly distinguish between what was/will be installed with the short plat and what is
being installed with the single family residence.
b. A note on the plans states that a I" line shall be installed; however, the approved
Civils show 1.5" line. Since afire sprinkler system is required and the short plat
states 1.5" line, please show a 1.5" service line.
c. Label the pipe material.
Response: Revised line weights and callouts to clearly distinguish between SFR and short plat
construction. 1.5" water line pipe material odd to plans.
2) Add a note to the plans indicating where the landscape irrigation backflow assembly will be
located (if one is proposed).
Response: No landscape meter proposed.
SEWER
1) Please clearly label the sewer line and clearly distinguish between what was/will be installed
with the short plat.
Response: Sewer collouts added to plan as requested
2) Label the rim and invert elevations at the home to verify the minimum 2' cover and
minimum 2% slope is being achieved.
Response: Sewer elevations added to plans as requested
STORM
1) It appears that the footing drains do not have a minimum coverage of 2' based on the FG of
381 and the invert elevations at the catch basin that the footing drains are tying into. Please
either show the footing drains with a minimum of 2' of cover under driveable areas (or I'
under landscape areas), ductile iron or equivalent being used, or provide an alternative
option.
Response: revisedfooting drain tie-in location.
2) On CBI, please callout which pipe will receive a riser.
Response: riser not required and was removed
3) Show an observation well on the infiltration system consistent with Standard Detail, SD —
636.
Response: Observation well added to plans as requested.
4) It appears that some hatching for the concrete driveway was removed. Please revise the
plans accordingly.
Response: Concrete driveway hatching corrected as requested.
5) The surface water runoff for the driveway shall be collected and mitigated; however, based
on the proposed slope of the driveway and the location of the trench, there is a significant
portion of the driveway not being mitigated. Please revise the plans accordingly.
Trench drain relocated to collect additional driveway area.
6) Show where the retaining wall drainage will discharge to if drainage is to be installed.
Response: Drywell discharge pit added to plans.
RAM Engineering 16531 131h Ave W, Suite A108 Lynnwood WA 98037 (425) 678-6960 RAMengineeringinc.com
Select Homes SFR 19323 80th Ave W
Plan Check BLD20180909
1st Review Comment Response
RAMJob No. 18-014
STORMWATER ENGINEER REVIEW
See separate comment letter.
Response: See responses below.
SHEET 2 OF 4 (GENERAL NOTES AND DETAILS)
GENERAL NOTES
1) Note I — Change 2016 to 2018
Response: Date changed to 2018 as requested.
DETAILS
1) Please replace the observation detail with the City's Standard Detail, SD — 636.
Response: Detail SD-636 added to plans.
2) Please replace the asphalt driveway detail with the City's Standard Detail, TR-510.
Response: Asphalt detail removed, no additional asphalt proposed with BLD plan.
SHEET 3 OF 4 (CLEARING, GRADING, & TESC PLAN)
Page 3 of4
TESC
1) It appears that the construction entrance is park rock and concrete. Is the concrete existing
or will both be concrete and rock be installed? Please revise the plans, if needed, to show
what will be installed or remain as the construction entrance.
Response: New aspholt/concrete areas removedfrom sheet 3 of 4, construction entrance clearly
identified.
2) Show protective fencing around the location of the infiltration system.
Response: Protective fencing added around infiltration system area as requested.
SHEET 4 OF 4 (GENERAL DETAILS)
No Comments
Stormwater Engineering Review: Zach Richardson, PE, August 1, 2018:
Review Comments:
1. It appears that a large portion of the driveway is downslope of the proposed
collection point/trench drain and therefore is not mitigated; update plan as
needed collect and mitigate runoff from the driveway surfaces.
Response: Trench drain relocated to collect additional driveway area.
2. Identify where the concrete retaining wall footing drain will outlet, and/or provide
details for construction of the wall and drainage system (or lack thereof if not
proposed to have drainage).
Response: Drywell discharge pit added to plans.
3. Provide a legend identifying the hatches used for various pavements; identify the
triangular shaped area of the driveway which does not appear to contain any
hatching, but is shown as new plus replaced in the drainage memo.
Response: Hatching updated and legend added as requested.
RAM Engineering 16531 131h Ave W, Suite A108 Lynnwood WA 98037 (425) 678-6960 RAMengineeringinc.com
Select Homes SFR 19323 80th Ave W Page 4 of 4
Plan Check BLD20180909
Ist Review Comment Response
RAM Job No. 18-014
4. Remove text in storm drain note referring to CPEP pipe.
Response: CPEP pipe removedfrom storm drain note as requested.
5. The ovefflow pipe appears to have less than 2'of cover within an area subject to
traffic; update as needed to provide 2'cover (or 1'with ductile iron piping).
Response: Depth of infiltration system lowered to provide adequate pipe cover, see revised plans.
If there are any questions regarding the items above, please contact me at your earliest convenience; I
can be reached at (425)678-6960 or RobL@RAMengineeringinc.com.
Thank you,
Mike Mor PILS
Principal
RAM Engineering 16531 131h Ave W, Suite A108 Lynnwood WA 98037 (425) 678-6960 RAM eng! neeri nginc.corn