20071005101914.pdfDennis M. Bruce, P.E.
M.S.C.E., M.B.A. Geotechnical/Civil Engineer
August 6, 2007
City of Edmonds
121 5" Ave. N
Edmonds, WA 98020
Subject: Field Reports - Geotechnical Inspections
The Marriott Group, LLC New Residence
18210 Homeview Dr., Edmonds, Washington
City of Edmonds Permit No. 2006 - 0575
RECEIVED
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ENONEERING WSION
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This engineering report presents the results of ongoing geotechnical inspections
for the new Marriott Group residence at 18210 Homeview Dr., Edmonds, Washington.
These inspections were required as a condition of permit by City of Edmonds.
Discussions with City of Edmonds August 6, 2007 verify the owner of the property to be
Linda Fenton.
REFERENCES:
• City of Edmonds approved Project Plans
• Geotechnical and Inspection Reports by D. Bruce, P.E.
• Site photographs
INSPECTIONS:
This engineer continues to provide on-site geotechnical inspections (daily during
key geotechnical activities). At a minimum, 1 inspection visit is provided each week.
Ci1tTof Edmonds Inspection Items;
• Soil Cuts: As previously reported, all excavation for the house foundation has
Been stable through this date (August 6, 2007) and properly backfilled.
This engineer has recently examined soil cuts for the driveway 1 sidewalk zone,
as well as the frontage Alpine rockery.
Specific on-site geotechnical recommendations have been made to project
superintendent (Kelley Marriott).
SOILS • FOUNDATIONS • SITE DEVELOPMENT • INSPECTION • DRAINAGE • DESIGN & PERMIT s LEGAL
P.O. Box 56502 • Shoreline, WA 98155 • (206) 546-9217 • FAX (206) 546-8442
City of Edmonds
Re: Marriott Group, LLC
Auguest 6, 2007
Page 2
Additional excavation and slope stabilization work is required along the western
driveway slope.
It is understood that Kelley Marriott will resubmit modified project plans to City of
Edmonds for review of the driveway slope stabilization measures.
Eco -Block shoring: Not required, as previously discussed.
• Sub -Grade Verification: Previously verified to meet 2,500 p.s.f. bearing capacity.
All residence foundation footings were properly placed in accordance with City of
Edmonds approved plans.
• Rockeries: This engineer has evaluated existing rockeries (as of August 6,
2007). These rockeries have been placed adjacent the sidewalk zone, and at the
eastern portion of the site (see photographs).
Additionally, rockeries have been placed at the lower portion of the site
(southerly).
Geotechnical inspections are ongoing to verify site rockeries.
Discussions (July 31, 2007) on-site with K. Marriott and B&D Rockeries have
resulted in the geotechnical recommendation for additional rockeries to
stabilize the steep western slope of the access driveway (see photographs).
Portions of the driveway side slope exceed the permanent stable declination of
3H:1 V.
In all areas where side slopes are steeper than 3H:1 V, additional slope
stabilization is required. This engineer recommends that the preliminary,
geotechnical design utilize a 4 to 5 -foot high rockery near the top of the driveway
slope.
Solid embedment in dense, sub -grade soils is required. Continuous geotechnical
inspection is required to verify: excavations, sub -grade bearing capacity,
condition for structural fill, rockery embedment, rock linkage, batter and drainage
zone.
A portion of the western driveway slope near the entrance currently has
"haphazard" riprap strewn on the slope. This condition is not acceptable as a
permanent stabilization measure.
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Auguest 6, 2007
Page 3
Additional rockeries (properly designed and inspected) are required in the
vicinity of the haphazard riprap.
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* Subsurface Drainage: Verified and approved for the residence itself.
Inspections continue for the slope stabilization measures.
Erosion Control: Temporary erosions control measures are approved, through
WL gust 6, 2007. Inspections are ongoing.
SUMMARY:
• Geotechnical aspects for the residence itself have been properly verified.
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•Slope issues for the driveway and overall property re jpe a,.d.' di I i,,onal stabilization.
This engineer has provided recommendations for aidWittional rockeries 1� , glope
stabilization measures.
• It is the re§p sibility of the project owner / superintendent to submit plan
modifications to Cit e
nds for review and approval, sOject to continued
inspections by t pls%engineer.
If there are any questions, do not hesitate to call.
DMB:abj
cc*. The Marriott Group, LILC
Dennis M. Bruce, P.E.
W&W