Height certification.pdfi� L'o as t 1 1143
Western
9740 Evergreen Way * Everett, Washington 98204
' Engineers (425) 356-2700 FAX (425) 356-2708
Inc. .HEIGHT CERTIFICATION -FINAL
Mostad Residence
SURVEYORS • PLANNERS • ENGINEERS (Ken Packard — GQ
Project File Number:18-000AE Mostad Residence
Project Address: 7001 Lake Ballanger Way, Edmonds
Building Plan Reference: Approved Site Plan "Salnual & Crystina Mostad" (10/11/12)
Site Benchmark (100.00 Feet datum assumed): The site benchmark, which is not specifically noted
on the approved building plans nor on the approved site plan (Exhibit "A" attached) of which were
prepared by the property owner was clarified in the email dated 10/15/2018 from Brad Shipley,
Associate Planner for the City of Edmonds Planning Department, (Exhibit "B" attached). Based on
said email, the benchmark is specifically described as the existing lower basement finished floor of the
subject residence. All plan elevations are US Survey Feet and any plan stated fractional elevations
have been converted to decimal feet.
Maximum Building Height (130.21 Feet ): The maximum building height, as defined on the
Approved site plan (Exhibit 1) is stated as 130.21' (one -hundred -thirty and 21/100th feet).
Highest Point of newly constructed structure's roofline (130.18 Feet ): It should be noted that the
building currently has two prominent rooflines with different heights and although the pre -construction
existing roofline (most northerly roof peak) is considered non -conforming, we noted that that the
measured elevation of this roofline peak was approximately 132.8' whereas the newly constructed roof
peals located on the south side of the existing building, subject to City's maximum building height
requirements, was measured at 130.18 feet on top of the existing roofing materials. Although the
building is still under construction, our field personnel noted that the roof appeared to be substantially
completed at the time of measurement.
Conclusion:
After reviewing the elevation measurements recorded by our field personnel on 10/16/2018, relative to
the site benchmark and maximum building height strictly defined herein, it is my opinion that that the
newly constructed roofline is 0.03' below the herein stated maximum building height. Although the
measured elevations stated herein have a specified precision, based on the surveying measurement
methods utilized, of +/- 0.02', we would note that even if the maximum defined error is added to the
highest point, the certified roofline was constructed below the maximum building height, as defined
herein.
Kenneth L. Long
Professional Land Surveyor
Washington License No. 16916
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x 37.4 = 1666.25
t 10' 11" = 487.0 Proposed deck over front patio 19'5 x 8'2
ifs 447' x 21' 5" = 954.8
1w deck 447' x 3' = 433.8
x 22'4" = 453.96
'x 10'=100
way and sidewalk — 70 x 25 =1750
,overage( impervious area) = 5845.81 sgft
ro cove rage(impervious area) 33 x 16,8 = 554.4 sgft
nevi impervious surface=6400.21
46 acres = 20037.6 tt rrz-ta
f usage total 6400.21/20037.6 = 31.91 aan�o
je 151s s1de 5e�back,
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37.4 = 1666.25
s 447' x 21' 5" = 954.8
t 22'4" = 453.96
x 10' = 100
Overage (areas over 30") = 3175.01 sgft
over back patio 19'5 x 8'2 = 158.6
ed patio infront of entry 10' x 16 = 160
rrent total coverage 33 x 16,8 — 3729.41sgft
ibove highwater mark 15360.19 according to GIS
(sage 3729.41115360 = 24
aok,jde 91 91 m
109, 112'
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