2269_001.pdf]ÐACE
Engineers I Plannçrs I Surveyors
PAOE Engineers, lnc. I SDA
1724 W Mar¡ne View Drive I Su¡te 140
Everett, wash¡ngton 98201-2088
p 425.486.6533 | f 425.486.ô5S3
An E00ht0fln0 Serclcss Cnilrpany
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August 30, 2019
City of Edmonds
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121 5tn Avenue North
Edmonds, WA 98020
Jenkins Lane Lot 3 - Single Family Residence
#BLD2Oí9O65í 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 1't 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,
Comments from Jeanie McGonnell (ieanie.mcconne!l@edmondswa.gov):
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
Sheet 1 of 3 - BUILDING SITE PLAN
1. Note driveway surface material as either concrete or asphalt
Concrete driveway noted,
www, paceengrs.com
August 30, 2019
City of Edmonds
Page2of 4
Engineers I Planners I Surveyors
www;paoeeng19.com
2. Sewer info (31LF-6" PVC... ) shown on this plan sheet, but sewer is not shown. lt looks like
note can be removed.
Note Removed.
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.
Note added.
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 revised.
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 revised.
4. Show water service line from stub provided with plat to the house.
Note revised.
5. A note calling out the existing sewer service is showing on the west side of Tract 999 and
points to the driveway. This appears to be a duplicate note. Please remove.
Nofe åas been removed.
6. Orange protective barrier fencing shall be placed around the area of the drywell locations to
protect the area from compaction. Show on plans.
Orange protective fencing has been shown and noted.
Sheet3of3-PLANNOTES
1. Revise General Note 1 to reflect the current version of the WSDOT/APWA specs.
Note revised.
2. Remove General Note #19. lt is not applicable to this project,
Note removed.
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August 30, 2019
City of Edmonds
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Engineers I Plânners I Surveyors
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Gomments from Stormwater Ensineer. Zack Richardson (zackarv.richardson@edmonds.wa.qov):
It 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
which requires additional attention [comment truncated for brevity]
(a) Simplified sizing to meet MR #5 does not ensure that a regular overflow will not
occur here; for ihis reason these systems require a piped ôverflow. lf system
remains as currently designed, update plans to provide a piped overflow connection
to the city system.
(b) Alternatively, the applicant can demonstrate that the system achieves 100% '
infiltration, typically requiring a \AA/I/HM model with the field measured infiltration
rate.
Design calculations have been provÍded as an attachmentto this letter, to satisfy
alternative (b) ahove. The calculaûons demonstrate 100% intiltration of roof runoff.
2. lt appears the callout for 31 LF-6' PVC is no longer pointing to an improvement; updated as
needed.
Removed note from Site Plan.
3. Add a note to the plans to make more clear the need to grade the driveway to discharge
toward, and align with the flow line of, Tract 999.
Shown and noted (see 17 on utility plan).
4. 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
Added to construction sequence and shown on utility plan.
5. Provide detail or specification enough for contractor to install soils meeting the requirements of
BMP T5.13 (City detail SD-642).
Detail SD-642 provided on säeef 4 of 4.
6. 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.
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August 30, 2019
City of Edmonds
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Engineers I Planners I Surveyors
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b. Extend distribution pipe through entire width of drywell and bring to
surface with clean-out with detail as/where needed for construction.
c. CallouUshow a push-on tee or downturned elbow in the yard dra¡n
upstream of the drywells with detail as/where needed for construction.
d. ldentífy 12" minimum cover depth, prov¡de a bottom of rock elevation, and
ensure the two are consistent with proposed finish grade.
Reguesfed revisions have been made.
This concludes our response to the previous review letter. Please feel free to callwith 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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