2265_001.pdfIEngineers I Planners I SurveyorsP,\CE
An EÍg¡floor¡nû Serllcos CôÍrpany
August 30, 2019
City of Edmonds
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121 5th Avenue North
Edmonds, WA 98020
Jenkins Lane Lot 2 - Single Family Residence
#BLD2OI9O652 lst Review - Response to Gomments
Dear Jeanie:
We are pleased to resubmit the attached Site Plan set for further review and approval. These plans
are submitted in response to the 1st Site Plan Review from both Planning and Engineering. The
following is a summary of responses to the review comments contained on the plan set and comment
letters. Review comments are shown in plain text and our responses are provided in bold italics.
Gomments from Jean ie McGon nel I (iean ie.nr¡cçS¡n nel l(ôedmonçlswa.qovì :
General
1. 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.
submitted by applicant
2. Submit Side Sewer Permit Application form.
submitted by applicant
ffimæ
Sheet 1 of 3 - BUILDING SITE PLAN
1. Note driveway surface material as either concrete or asphalt
Noted as concrete.
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PACE EngineÊr$, lnc. I SDA
172¿l W Marine V¡ew Drive I S(¡ite 140
Everett, Washington 98201-2088
p 425.486.6533 | f 425.486.6593
www.paceengrs.com
August 30, 2019
City of Edmonds
Page 2 of 3
Englneers I Planners I Surveyors
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Sheet 2 of 3 - UTILITY AND TESC PLAN
1. Add note that cleanouts located within drive surfaces shall have a Cl lamphole cover. Where
not located at the edge of ROW or City easement, the lamphole cover does not need to be 12"
in diameter.
Added as l\lof #16 on Sheeú 2 of 4.
2. Clarify Note 1 to state that the storm tightline shall not be connected to the footing drains any
closer than 1O-ft from the foundation.
Note#1 has been revised as requested.
3. Clarify Note 13 so it is clear the 1ft minimum cover does not apply to water and sewer. Sewer
shall have 2ft of cover and water shall have 18" cover, regardless of location being in paved or
landscaped area.
Note 13 has been revised as reguesfed.
Sheet3of3-PLANNOTES
1. Revise General Note 1 to reflect the current version of the WSDOT/APWA specs
Note I has been revised
2. Remove General Note #19. lt is not applicable to this project.
The referenced note has been removed.
3. Orange protective barrier fencing shall be placed around the area of the drywell locations to
protect the area from compaction.
This has been added to the construction sequence and shown on Sáeef 2 of 4.
Gomments from Stormwater Ensineer. Zack Richardson (zackarv.richj¡rdson(Oedmonds.wa.oov):
1. lt appears the proposal for this lot has increased the impervious area and decreased the
drywallvolume since the previous plat approval; the minimum value now used (by simplified
sizing) meets code but represents a revision from the previously approved drainage plan
[comment truncated for brevity]
(a) Simplified sizing to meet MR #5 does not ensure that a regular overflow will not
occur here; for this reason these systems require a piped overflow. lf system
remains as currently designed, update plans to provide a piped overflow connection
to the city system.
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August 30, 2019
City of Edmonds
Page 3 of 3
Engineers I Planners I Surveyors
www.pâceengrs.c0m
(b) Alternatively, the applicant can demonstrate that the system achieves 100o/o
infiltration, typically requiring a \ÂAffHM modelwith the field measured infiltration
rate.
Design calculations have been provided as an attachment to this letter, to satisfy
alternative (b) above. The calculatîons demonstrate 100% infiltration of roof
runoff"
2. Show protective construction fencing around the drywell areas.
(a) lf fencing cannot be feasibly located during construction, add notes to over
excavate and obtain geotech approval of the subgrade prior to backfilling drywells.
Shown/labeled on sheeú 2 of 4.
3. Provide detail or specification enough for contractor to install soils meeting the requirements of
BMP T5.13 (City detail SD-642).
Included detail SD-624 on sheet 4 of 4.
4. Update drywell details to be SD-638 or update plan details to provide more of the required and
shown elements from the City version:
(a) Update "marked center" to provide an observation pipe to the bottom of the facility
with detail as/where needed for construction,
(b) Extend distribution pipe through entire width of drywell and bring to surface with
clean-out with detail as/where needed for construction.
(c) Callout/show a push-on tee or downturned elbow in the yard drain upstream of the
drywells with detail as/where needed for construction.
(d) ldentify 12" minimum cover depth, provide a bottom of rock elevation, and ensure
the two are consistent with proposed finish grade.
The requesfedrevisions have been made
This concludes our response to the previous review letter. Please feel free to call with any questions
(425) 486-6533, or if I can provide anything further.
Sincerely,
PACE Engineers, lnc
Kenneth J. Mclntyre, PE
Project Manager
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