16234 72nd ave- phil lehn memo.doc
July 26, 2006
Phil Lehn
nd
16202 72 Ave W
Edmonds, WA 98026
nd
RE:Plan Check 2006-0543, 16234 72 Ave SW
Request to Exceed Driveway Slope of 14%
Dear Phil:
This letter is in response to your written request dated May 10, 2006, to exceed the maximum
allowed driveway slope of 14%. Review of the submitted letter and site plan indicate that if the
finished floor elevation of the lower level had to be lowered in order to meet the driveway slope
requirement of 14%, you would be unable to gravity drain both the sanitary sewer and storm
drainage detention system to the City systems. Although pumping to the City system is an
acceptable method, the preferred method is gravity.
Based on the elevations of the upper two driveway entrances, only the inside radius of the north
driveway will exceed the maximum grade of 14%. Since the impact of the driveway slope is
limited to one small area of the entire driveway and to insure that the sanitary sewer and storm
drain can drain by gravity, allowing that portion of the northerly driveway entrance to exceed
14% seems reasonable.
Therefore, your request for the driveway slope waiver is hereby granted to 17% for the northerly
driveway approach only.
Please call the Engineering Inspection line at 425-771-0220, ext. 1326, to schedule your driveway
form inspection, prior to pour. If you have any questions regarding these requirements please call
me at 425-771-0220 ext 1324.
Sincerely,
Lyle Chrisman
Lyle Chrisman
Engineering Program Manager
alc
c: Street file
Plan Check File #2006-0543
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