bld20120662_Echelbarger_ENG1.pdf
City of Edmonds BLD20120662
TH
121 5 AVENUE NORTH EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
Permit Application :Date:
# BLD20120662 Septmeber 25, 2012
Project Name/Address:
Echelbarger – 1052 Alder St
Contact Person/Address, Fax or E-mail:
Echelbarger
Reviewer: JENNIFER LAMBERT Division:
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.ci.edmonds.wa.us under City Government / Development Services Department /
Engineering Division then scroll down to Handouts:
GENERAL
Construction Sequence
1)Please remove number 1. A pre-construction meeting is not required.
Notes:
2)Please replace number 1 with “Applicant shall repair/replace all damage to utilities or frontage
improvements in City right-of-way per City standards that is caused or occurs during the permitted
project”.
GRADING AND TESC PLAN
1)Please provide a separate Grading and TESC Plan.
DRAINAGE AND UTILITY PLAN
SEWER
3)Please show all invert elevations at the cleanouts and at the connection to the main,
4)Please show the 6” cleanout (with 12” cast iron lamphole cover and ½” hexbolts) at back of sidewalk
between the sidewalk and the retaining wall.
5)Please show a cleanout within 2’ of the house.
6)Please note the pipe material will be used for the sewer.
DATE E-MAILED 9/25/2012 PAGE(1)
City of Edmonds BLD20120662
TH
121 5 AVENUE NORTH EDMONDS, WA 98020 • (425) 771-0220 FAX(425) 771-0221
Website: www.ci.edmonds.wa.us
PUBLIC WORK DEPARTMENT
Planning • Building • Engineering
Engineering Plan Review Comments
WATER
1)Please show the water service line from the house to the meter.
2)Please note what pipe material and size line will be used as well as noting that tracer wire will be added
to the water service line.
STORM
1)Please provide invert elevations for the roof drains at the house so that proper cover can be verified.
2)Please show how the surface water runoff from the driveway will be collected.
3)Please show where the footing drains will outfall to.
Additional comments from Jerry Shuster, Stormwater Eng Program Mngr.,
1)The calculation for the size of the infiltration trench uses an impervious area of 2,117 square feet. The
table above the calculation indicates the site will have 2,019 square feet. Please explain the difference.
2)The geotechnical report indicates a considerable variation in the recommended long-term infiltration
rate between the two test pit sample near the proposed infiltration rate. Choosing the highest rate is not
size is a better indication of the infiltrating ability of the soil than the other test. By
approved. The D
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averaging the long-term infiltration rates from the Dsize, a rate of 1.2 in/hr is obtained. Use Table 5 in
10
Engineering Handout #E72B to linearly interpolate a sizing factor for a design infiltration rate of 1.2
inches per hour, and size the trench accordingly.
3)Infiltration trench must have a catch basin at the upstream end for solids removal per figure A-3 in
Engineering Handout #E72B with a minimum of 1 foot of catch.
Frontage Improvements /Driveway
1)It appears that the driveway is close to 14% slope. Please note that per ECDC 18.80.060 the driveway
should not exceed 14% slope.
2)The tree located in the right-of-way and driveway shall not be removed. Please revise the plans showing
the tree to remain and proper separation from the driveway such as not to damage the tree during
construction or final completetion of the project.
Please resubmit 3 copies of the revised plans and associated documents with a written response to each
item to a Permit Coordinator. Please contact me at 425-771-0220 ext 1321 or by e-mail at
jennifer.lambert@ci.edmonds.wa.us if you have specific questions regarding these plan corrections.
DATE E-MAILED 9/25/2012 PAGE(2)